Information
-
Patent Grant
-
6722587
-
Patent Number
6,722,587
-
Date Filed
Friday, February 15, 200222 years ago
-
Date Issued
Tuesday, April 20, 200420 years ago
-
Inventors
-
Original Assignees
-
Examiners
Agents
-
CPC
-
US Classifications
Field of Search
US
- 239 548
- 239 553
- 239 5535
- 239 554
- 239 555
- 239 557
- 239 559
- 239 565
- 239 5905
- 239 596
- 239 536
- 239 267
- 239 268
- 239 DIG 1
- 118 306
- 118 313
- 118 315
- 118 316
- 118 317
- 164 149
- 164 267
- 425 96
- 425 100
- 425 103
- 425 107
-
International Classifications
-
Abstract
A spray system has a base plate, a support member, a first cylinder mechanism and a second cylinder mechanism, a first slide tube and a second slide tube, a first board portion and a second board portion, a first holding bar, and a second holding bar. Each board portion is so constructed that a nozzle cassette is detachably fitted to a board base plate, the nozzle cassette is equipped with a number of spray nozzles, the first cylinder mechanism is so constructed that the first board portion can be moved relative to the support member, and the second cylinder mechanism is so constructed that the second board portion can be moved relative to the support member.
Description
BACKGROUND OF THE INVENTION
This invention relates to a spray system which sprays mold release agent etc. onto inside surfaces of opened metal molds for a casting machine.
In a conventional spray system, two board portions equipped with spray nozzles for spraying the mold release agent etc. have been unmovable. Replacement of the board portion has been done by detaching and attaching the entire board portion. In addition, a surface of the board portion facing on the inside surface of the metal mold has been flat, and the spray nozzles have been installed on the flat surface.
In the conventional spray system having the foregoing structure has presented the following problems.
(1) Because of the two unmovable board portions, there existed points in the inside surfaces of metal molds to which the mold release agent etc. could not be sprayed so that defective die-cast products would be produced, in case where the inside surface of a metal mold to be sprayed included deep grooved configurations. For this reason, the spray system having such a structure that one-side board portion can be moved is proposed in Publication No. JP-5-329608. According to this system, the occurrence of defective die-cast products can be reduced as compared with the conventional spray system. In the field of die-cast technology, however, it is desired to further reduce the occurrence of defective die-cast products.
(2) Since the entire board portion is heavy, a detaching/attaching operation of the entire board portion has been difficult and dangerous.
(3) Since the spray nozzles are installed on the flat surface of the board portion, the nozzle length has been set to 200 to 500 mm in case where the inside surface of metal mold has included complicated configurations. In case of a long nozzle length, however, it has been difficult to spray the mold release agent etc. onto a spray point accurately because the nozzle is easily affected by vibration etc. of the board portion. For this reason, defective die-cast products would be produced.
SUMMARY OF THE INVENTION
An object of this invention is to provide a spray system which can spray the mold release agent etc. onto a spray point of the inside surface of the metal mold accurately and can further reduce an occurrence of defective die-cast products.
A first embodiment is a spray system for spraying a mold release agent etc. onto inside surfaces of opened metal molds for a die casting machine; having a base plate to which a supply device for distributing and supplying the mold release agent etc. is mounted, a support member fixed to the base plate, a first cylinder mechanism and a second cylinder mechanism both fixed to the support member, a first slide tube and a second slide tube both fixed to the support member, a first board portion and a second board portion disposed oppositely on both sides of the support member and equipped with spray nozzles for spraying the mold release agent etc., a first holding bar one end of which is fixed to the first board portion and the other end side of which slidably pierces and extends through the support member, and a second holding bar one end of which is fixed to the second board portion and the other end of which slidably pierces and extends through the support member; in which the first slide tube is freely expandable between the support member and the first board portion and connects a supply outlet of the supply device and a passage inlet of the first board portion, the second slide tube is freely expandable between the support member and the second board portion and connects the supply outlet of the supply device and a passage inlet of the second board portion, each board portion is so constructed that a nozzle cassette is detachably fitted to a board base plate, the nozzle cassette is equipped with a large number of spray nozzles, and the spray nozzle is connected to the passage inlet of the board portion, each cylinder mechanism is composed of a cylinder body fixed to the support member and a rod expanding from and retracting in the cylinder body, the first cylinder mechanism has such a construction as to move the first board portion relative to the support member by expanding and retracting the rod in parallel with the first holding bar, and the second cylinder mechanism has such a construction as to move the second board portion relative to the support member by expanding and retracting the rod in parallel with the second holding bar.
According to the first embodiment, the first board portion and the second board portion can be moved so that the first board portion can be put near to the inside surface of the fixed metal mold and the second board portion can be put near to the inside surface of the movable metal mold. Therefore, the mold release agent etc. can be sprayed onto the inside surfaces of both metal molds accurately and securely. Consequently, the occurrence of defective die-cast products can be prevented.
Since each board portion is so constructed that the nozzle cassette is detachably fitted to the board base plate, each board portion can be replaced only by detaching and attaching the nozzle cassette. Therefore, the replacement work of each board portion can be done easily and safely.
A second embodiment is a spray system under a not-moving state of the first board portion and the second board portion; in which the other end of the first holding bar also slidably pierces and extends through the second board portion, the first slide tube is composed of an external tube and an internal tube expandable from the external tube, the tip end of the internal tube connects to the first board portion, and the external tube pierces and extends through the second board portion.
According to the invention of the second embodiment, the moving distance of the first board portion can be made large. Therefore, the spray nozzle can be put nearer to the inside surface of the fixed metal mold so that more accurate spraying becomes possible.
A third embodiment is a spray system under a not-moving state of the first board portion and the second board portion; in which the other end of the second holding bar also slidably pierces and extends through the first board portion, the second slide tube is composed of an external tube and an internal tube expandable from the external tube, the tip end of the internal tube connects to the second board portion, and the external tube pierces and extends through the first board portion.
According to the third embodiment, the moving distance of the second board portion can be made large. Therefore, the spray nozzle can be put nearer to the inside surface of the movable metal mold so that more accurate spraying becomes possible.
A fourth embodiment is a spray system in which the nozzle cassette has concave and convex configurations corresponding to concave and convex configurations on the inside surfaces of the metal mold to be sprayed, and includes a number of spray nozzles on surfaces of the concave/convex configurations.
According to the fourth embodiment, the mold release agent etc. can be sprayed securely even onto side faces of the concave and convex configurations of the inside surfaces of both metal molds. Therefore, the mold release agent etc. can be sprayed thoroughly onto the inside surfaces of both metal molds. Consequently, an occurrence of defective die-cast products including seizure etc. can be prevented more securely.
A fifth embodiment is a spray system in which each board portion is provided with a shock absorber for moderating a shock occurring when the board portion strikes against the metal mold.
According to the fifth embodiment, the shock occurring when each board portion strikes against the metal mold can be moderated and a breakage of the spray nozzle due to the striking can be prevented.
A sixth embodiment is a spray system in which two base plates stand at right angles to the board portion and are disposed in such a way as to face each other, the supply device is fixed to the one-side base plate, and the two base plates are supported by diagonally connected turnbuckles.
According to the sixth embodiment, the two base plates can be firmly held perpendicular to, and facing, each other.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is a partially sectional front view showing a state where the spray system of this invention is disposed between both metal molds opened in lateral direction of a die casting machine;
FIG. 2
is a plan view of the spray system of
FIG. 1
;
FIG. 3
is a left side view of the spray system of
FIG. 1
;
FIG. 4
is a right side view of the spray system of
FIG. 1
;
FIG. 5
is a sectional partial view taken on a line V—V of
FIG. 2
;
FIG. 6
is a sectional partial view taken on a line VI—VI of
FIG. 2
;
FIG. 7
is a partial view taken in the direction of VII of the spray system of
FIG. 1
;
FIG. 8
is an exploded side view of the first board portion;
FIG. 9
is an enlarged partially sectional schematic view of the nozzle cassette;
FIG. 10
is a sectional partial view taken on a line X—X of
FIG. 2
;
FIG. 11
is a view corresponding to
FIG. 5
showing a moving operation of the first board portion;
FIG. 12
is a front view showing a state after completion of movement of the both board portions;
FIGS. 13A through 13D
are sectional partial schematic views for explaining merits of the moving mechanism of the first board portion;
FIG. 14
is a front view showing a working mechanism of sub hood;
FIG. 15
is a view seen in a direction of XV of
FIG. 14
;
FIG. 16
is a view corresponding to the section taken on a line XVI—XVI of
FIG. 12
;
FIG. 17
is a front sectional view of an essential part of the spray system when the base plate is put in a horizontal position; and
FIG. 18
is a view seen in a direction of XVIII of FIG.
17
.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1
is the partially sectional front view showing the state where the spray system
2
of this invention is disposed between a fixed metal mold
11
and a movable metal mold
12
opened in the lateral direction of the die casting machine. The spray system
2
of
FIG. 1
is under the not-working state.
FIG. 2
is the plan view of the spray system
2
of
FIG. 1
,
FIG. 3
is the left side view of the spray system
2
of
FIG. 1
, and
FIG. 4
is the right side view of the spray system
2
of FIG.
1
. The spray system
2
is equipped with two base plates
31
&
32
disposed perpendicular to and facing each other, as specially illustrated in
FIG. 2. A
supply device
20
for distributing and supplying a mold release agent etc. is fixed to the one-side base plate
31
. The mold release agent etc. mean a mold release agent, a seizure inhibitor and cool water etc.
The supply device
20
is equipped with an atomizer device and a distribution manifold (both not shown). In this instance, a mold release agent, a seizure inhibitor, and cool water are used for the mold release agent etc. The atomizer device is equipped with a first atomizer which produces mold release agent mixture by mixing the mold release agent with air, a second atomizer which produces seizure inhibitor mixture by mixing the seizure inhibitor with air, and a third atomizer which produces cool water mixture by mixing cool water with air. The distribution manifold is equipped with a first chamber connecting to the first atomizer, a second chamber connecting to the second atomizer, a third chamber connecting to the third atomizer, and an air blow chamber connecting to an air supply source (not shown).
A support member
4
(
FIG. 2
) is placed at right angles to the base plates
31
&
32
on an upper part of and between the base plates
31
&
32
. The support member
4
is a square pole which is fixed by pins
43
&
44
to flanges
41
&
42
fixed to the base plates
31
&
32
.
A first board portion
51
and a second board portion
52
are oppositely disposed on both sides of the support member
4
. Both board portions
51
&
52
are located in parallel with the support member
4
.
The first cylinder mechanism and the second cylinder mechanism are fixed onto an upper face of the support member
4
. Two cylinder mechanisms
61
&
62
are installed for serving as the first cylinder mechanism, and two cylinder mechanisms
63
&
64
are installed for serving as the second cylinder mechanism. The two cylinder mechanisms
61
&
62
are longitudinally positioned at both sides of the support member
4
, and the two cylinder mechanisms
63
&
64
are longitudinally positioned at a central part of the support member
4
.
FIG. 5
is a sectional partial view taken on the line V—V of
FIG. 2
, i.e. a vertical sectional view of a part to which the cylinder mechanism
61
forming the first cylinder mechanism is fixed. As shown in
FIG. 5
, the cylinder mechanism
61
is composed of a cylinder body
611
and a rod
612
. The rod
612
is expandable from the cylinder body
611
. The cylinder body
611
is fixed to the support member
4
through a flange
610
. The rod
612
is expandable at right angles to and horizontally with the support member
4
. A tip end
613
of the rod
612
is fixed to the first board portion
51
.
A holding bar
71
is installed at a lower part of the cylinder mechanism
61
at right angles to and horizontally with the support member
4
. One end
711
of the holding bar
71
is fixed to the first board portion
51
, and the other end side slidably pierces the support member
4
through a bearing
45
etc. and further slidably pierces and extends through the second board portion
52
, too.
The cylinder member
62
also has the same structure as the cylinder mechanism
61
, and is installed in the same way as the cylinder mechanism
61
. Namely, the cylinder mechanism
62
is composed of a cylinder body
621
and a rod
622
. In addition, a holding bar having the same structure as the holding bar
71
is installed at a lower part of the cylinder mechanism
62
in the same way as the holding bar
71
. These holding bars
71
etc. are installed for serving as a first holding bar.
FIG. 6
is a sectional partial view taken on the line VI—VI of
FIG. 2
, i.e. a vertical sectional view of a part to which the cylinder mechanism
63
for serving as the second cylinder mechanism is fixed. As shown in
FIG. 6
, the cylinder mechanism
63
has the same structure as the cylinder mechanism
61
but its installed position is reversed. The cylinder mechanism
63
is composed of a cylinder body
631
and a rod
632
. The rod
632
is expandable from the cylinder body
631
. The cylinder body
631
is fixed to the support member
4
through a flange
630
. The rod
632
is expandable at right angle to and in horizontal with the support member
4
. A tip end
633
of the rod
632
is fixed to the second board portion
52
.
A holding bar
73
is installed at a lower part of the cylinder mechanism
63
at right angles to and horizontally with the support member
4
. One end
731
of the holding bar
73
is fixed to the second board portion
52
, and the other end side slidably pierces the support member
4
through a bearing
45
etc. and further slidably pierces and extends through the first board portion
51
, too.
The cylinder mechanism
64
also has the same structure as the cylinder mechanism
63
, and is installed in the same way as the cylinder mechanism
63
. Namely, the cylinder mechanism
64
is composed of a cylinder body
641
and a rod
642
. In addition, a holding bar having the same structure as the holding bar
73
is installed at a lower part of the cylinder mechanism
64
in the same way as the holding bar
73
. These holding bars
73
etc. are installed for serving as a second holding bar.
FIG. 7
is a view of the support member
4
seen from below, i.e. a partial view of the spray system
2
viewed in the direction of VII of FIG.
1
. As shown in
FIG. 7
, the first slide tube and the second slide tube are fixed to a lower face of the support member
4
. Five slide tubes
80
,
81
,
82
,
83
&
84
are installed for serving as the first slide tube, and five slide tubes
85
,
86
,
87
,
88
&
89
are installed for serving as the second slide tube. These slide tubes have a one-stepped structure including only one stepped portion for sliding the tube, which is a well-known structure.
As shown in
FIG. 5
, the slide tube
80
forming the first slide tube is composed of an external tube
801
, an internal tube
802
and a joint
803
. One end
8021
of the internal tube
802
is fixed to the first board portion
51
, and the other end side of it slidably pierces through the joint
803
to be inserted deeply into the external tube
801
. The joint
803
is positioned at stepped portions between the external tube
801
and the internal tube
802
. The internal tube
802
slidably pierces the joint
803
through an oil-retaining bearing
804
etc. The other end
8022
of the internal tube
802
is opened. One end
8011
of the external tube
801
is fixed to and blocked by the joint
803
, and the other end side of it slidably pierces and extends through the second board portion
52
. The other end
8012
is blocked. A clearance which enables the mixture of such as the mold release agent etc. to pass through, is secured between an inner surface of the external tube
801
and an outer surface of the internal tube
802
. A space is secured also between the other end
8022
of the internal tube
802
and the other end
8012
of the external tube
801
. A supply port
805
is opened downward mid way of the external tube
801
. The slide tube
80
is fixed to a lower face of the support member
4
by the joint
803
.
The slide tubes
81
,
82
,
83
&
84
also have the same structure as that of the slide tube
80
and are installed in the same way as the slide tube
80
. In
FIG. 7
;
815
,
825
,
835
&
845
are supply ports for the slide tubes
81
,
82
,
83
&
84
, respectively.
The slide tube
85
forming the second slide tube has the same structure as the slide tube
80
as illustrated in
FIG. 6
, however, it is installed at a position opposite that of the slide tube
80
. The slide tube
85
is composed of an external tube
851
, and internal tube
852
and a joint
853
. One end
8521
of the internal tube
852
is fixed to the second board portion
52
, and the other end of it slidably pierces through the joint
853
to be inserted deeply into the external tube
851
. The joint
853
is positioned at stepped portions between the external tube
851
and the internal tube
852
. The internal tube
852
slidably pierces the joint
853
through an oil-retaining bearing
854
etc. The other end
8522
of the internal tube
852
is opened. One end
8511
of the external tube
851
is fixed to and blocked by the joint
853
, and the other end of it slidably pierces and extends through the first board portion
51
. The other end
8512
is blocked. A clearance which enables a mixture of such as the mold release agent etc. to pass through, is secured between an inner surface of the external tube
851
and an outer surface of the internal tube
852
. A space is secured also between the other end
8522
of the internal tube
852
and the other end
8512
of the external tube
851
. A supply port
855
is opened downward mid way of the external tube
851
. The slide tube
85
is fixed to a lower face of the support member
4
by the joint
853
.
The slide tube
86
,
87
,
88
&
89
also have the same structure as that of the slide tube
85
and are installed in the same way as the slide tube
85
. In
FIG. 7
;
865
,
875
,
885
&
895
are supply ports for the slide tubes
86
,
87
,
88
&
89
, respectively.
As the result, the first board portion
51
is supported to the support member
4
by means of the first cylinder mechanism, the first holding bar and the first slide tube; and the second board portion
52
is supported to the support member
4
by means of the second cylinder mechanism, the second holding bar and the second slide tube.
The first board portion
51
is so constructed that the nozzle cassette
53
is detachably fitted to the board base plate
511
as shown in FIG.
8
. Detaching and attaching operations are done by clamp mechanisms
55
. Here, six clamp mechanisms
55
in total are installed: two at the upper part of the nozzle cassette
53
, two at one-side part of it, and two at the other-side part of it. The clamp device as described in Japanese Patent No. 3,055,884 obtained by the applicant of this invention is used for the clamp mechanism
55
.
The nozzle cassette
53
is composed of a cassette first base plate
531
, a cassette second base plate
532
, a hood
533
and a large number of spray nozzles
534
. As shown in
FIG. 9
forming an enlarged partially sectional schematic view, the board base plate
511
and the first base plate
531
have through holes
561
&
562
forming a passage inlet
56
connecting to one end
8021
of the internal tube
802
of the slide tube
80
. A passage
563
connecting to the passage inlet
56
is formed at a boundary surface between the first base plate
531
and the second base plate
532
. The spray nozzle
534
is fixed onto a surface of the hood
533
. The spray nozzle
534
is connected through a connection hose
564
to the passage
563
. The connection hose
564
has connectors at both ends, one-side connector
565
being inserted into a through hole
5321
of the second base plate
532
to be connected to the passage
563
and the other-side connector
566
being connected to the spray nozzle
534
.
The hood
533
has concave/convex configurations corresponding to the concave/convex configurations on the inside surface of the fixed metal mold
11
. The spray nozzles
534
are installed at right angles to the concave/convex surfaces of the hood
533
.
The second board portion
52
also has fundamentally the same structure as the first board portion
51
. In other words, the second board portion
52
is so constructed that the nozzle cassette
54
is detachably fitted to the board base plate
521
as shown in FIG.
1
. Detaching and attaching operations are done by the clamp mechanism
55
. The nozzle cassette
54
is composed of a cassette first base plate
541
, a cassette second base plate
542
, a hood
543
and a large number of spray nozzles
544
. Connection structure of the slide tube with the spray nozzles is similar to that of the first board portion
51
. The hood
543
consists of one main hood
5431
and two sub hoods
5432
, and has the concave/convex configuration corresponding to the concave/convex configuration on the inside surface of the movable metal mold
12
.
As shown in
FIG. 2
, a first mechanical stopper
91
and a first shock absorber
92
are installed and accompanied with the first cylinder mechanism. The first mechanical stopper
91
has a stick shape, one end
911
of which is fixed to the first board portion
51
, and the other end of which slidably pierces through the support member
4
and extends at right angles to and in parallel with the support member
4
. The first mechanical stopper
91
moves together with the first board portion
51
when the first board portion
51
moves by a specified distance in a direction of arrow A, and an adjusting nut
912
fitted at the other end thus strikes against the support member
4
. Thereby, the first mechanical stopper
91
restricts the movement of the first board portion
51
within the foregoing specified distance. The first shock absorber
92
is installed at a side of the fixed metal mold
11
of the first board portion
51
. The first shock absorber
92
is so adjusted that its tip end
921
strikes against the fixed metal mold
11
before the tip end of the spray nozzle
534
strikes against the fixed metal mold
11
. Thereby, the first shock absorber
92
moderates the shock arising when the first board portion
51
strikes against the fixed metal mold
11
. Here, one piece of the first mechanical stopper
91
is installed in the vicinity of the longitudinal central part of the support member
4
, and two pieces of the first shock absorbers
92
are installed at longitudinal both sides of the support member
4
.
As shown in
FIG. 2
, a second mechanical stopper
93
and a second shock absorber
94
are installed and accompanied with the second cylinder mechanism. The second mechanical stopper
93
has a stick shape, one end
931
of which is fixed to the second board portion
52
, and the other end of which slidably pierces through the support member
4
and extends at right angles to and in parallel with the support member
4
. The second mechanical stopper
93
moves together with the second board portion
52
when the second board portion
52
moves by a specified distance in the direction of arrow B, and an adjusting nut
932
fitted at the other end side thus strikes against the support member
4
. Thereby, the second mechanical stopper
93
restricts the movement of the second board portion
52
within the foregoing specified distance. The second shock absorber
94
is installed at a side of the movable metal mold
12
of the second board portion
52
. The second shock absorber
94
is so adjusted that its tip end
941
strikes against the movable metal mold
12
before the tip end of the spray nozzle
544
strikes against the movable metal mold
12
. Thereby, the second shock absorber
94
moderates the shock arising when the second board portion
52
strikes against the movable metal mold
12
. Here, one piece of the second mechanical stopper
93
is installed in the vicinity of the longitudinal central part of the support member
4
, and two pieces of the second shock absorbers
94
are installed longitudinally at both sides of the support member
4
.
FIG. 10
is a sectional partial view taken on the line X—X of
FIG. 2
, and shows a lower part of the support member
4
. As shown in
FIG. 10
, the supply device
20
is connected to respective slide tubes
80
through
89
by hoses. The first chamber of the distribution manifold of the supply device
20
is connected through a hose
200
to a supply port
805
of the slide tube
80
, through a hose
201
to a supply port
845
of the slide tube
84
, through a hose
202
to a supply port
855
of the slide tube
85
, and through a hose
203
to a supply port
895
of the slide tube
89
, respectively. The second chamber is connected through a hose
204
to a supply port
835
of the slide tube
83
, and through a hose
205
to a supply port
865
of the slide tube
86
, respectively. The third chamber is connected through a hose
206
to a supply port
815
of the slide tube
81
, and through a hose
207
to a supply port
885
of the slide tube
88
, respectively. The air blow chamber is connected through a hose
208
to a supply port
825
of the slide tube
82
, and through a hose
209
to a supply port
875
of the slide tube
87
.
As shown in
FIG. 10
, the two base plates
31
&
32
disposed oppositely are supported by diagonally connected turnbuckles
99
. The turnbuckles
99
are provided on all of the diagonal lines.
The function of the spray system having the above-mentioned structure will be described hereunder.
First of all, the moving function of the first board portion
51
will be described.
When the cylinder mechanism
61
of
FIG. 5
actuates to cause the rod
612
to move forward in the direction of arrow A together with the cylinder mechanism
62
, the first board portion
51
moves in the direction of arrow A accompanied by the holding bar
71
and the internal tube
802
of the slide tube
80
as shown in FIG.
11
. The cylinder mechanism
62
actuates in the same way. Since the first board portion
51
is supported to the support member
4
by the cylinder mechanisms
61
&
62
, the holding bar
71
etc. and the slide tubes
80
through
84
as mentioned above; it moves while keeping its perpendicular position. After the first board portion
51
has moved by the specified distance, the first mechanical stopper
91
functions so that the movement of the first board portion
51
is securely restricted within the above-mentioned specified distance. Even if the first board portion
51
moves excessively, the shock of striking of the first board portion
51
against the fixed metal mold
11
is moderated and breakage of the spray nozzle
534
due to the striking can be prevented, because the tip end
921
of the first shock absorber
92
strikes against the fixed metal mold
11
before the spray nozzle
534
strikes against the fixed metal mold
11
.
The second board portion
52
is also moved in the direction of arrow B by actuation of the cylinder mechanisms
63
&
64
in the same way as the first board portion
51
. The cylinder mechanisms
63
&
64
actuate in the same way as the cylinder mechanisms
61
&
62
, with the exception of actuation direction.
FIG. 12
is a front view showing the state where the first board portion
51
and the second board portion
52
have moved. In
FIG. 12
, the tip end
921
of the first shock absorber
92
is striking against the fixed metal mold
11
and the tip end
941
of the second shock absorber
94
is striking against the movable metal mold
12
.
When the supply device
20
actuates under the state of
FIG. 12
, the mold release agent etc. are sprayed as follows.
(1) The mold release agent mixture is supplied to the first board portion
51
by way of the hoses
200
&
201
and the slide tubes
80
&
84
, and sprayed from the spray nozzle
534
located at specified position and connected to the slide tubes
80
&
84
onto the inside surface of the fixed metal mold
11
.
(2) The mold release agent mixture is supplied to the second board portion
52
by way of the hoses
202
&
203
and the slide tubes
85
&
89
, and sprayed from the spray nozzle
544
located at a specified position and connected to the slide tubes
85
&
89
onto the inside surface of the movable metal mold
12
.
(3) The seizure inhibitor mixture is supplied to the first board portion
51
by way of the hose
204
and the slide tube
83
, and sprayed from the spray nozzle
534
located at specified position and connected to the slide tubes
83
onto the inside surface of the fixed metal mold
11
.
(4) The seizure inhibitor mixture is supplied to the second board portion
52
by way of the hose
205
and the slide tube
86
, and sprayed from the spray nozzle
544
located at specified position and connected to the slide tubes
86
onto the inside surface of the movable metal mold
12
.
(5) The cool water mixture is supplied to the first board portion
51
by way of the hose
206
and the slide tube
81
, and sprayed from the spray nozzle
534
located at a specified position and connected to the slide tubes
81
onto the inside surface of the fixed metal mold
11
.
(6) The cool water mixture is supplied to the second board portion
52
by way of the hose
207
and the slide tube
88
, and sprayed from the spray nozzle
544
located at specified position and connected to the slide tubes
88
onto the inside surface of the movable metal mold
12
.
(7) Air is supplied to the first board portion
51
by way of the hose
208
and the slide tube
82
, and sprayed from the spray nozzle
534
located at a specified position and connected to the slide tubes
82
onto the inside surface of the fixed metal mold
11
.
(8) Air is supplied to the second board portion
52
by way of the hose
209
and the slide tube
87
, and sprayed from the spray nozzle
544
located at a specified position and connected to the slide tubes
87
onto the inside surface of the movable metal mold
12
.
After completion of the spray operation as mentioned above, the rods
612
&
622
of the cylinder mechanisms
61
&
62
move backward to cause the first board portion
51
to move to the support member
4
side, and the rods
632
&
642
of the cylinder mechanisms
63
&
64
move backward to cause the second board portion
52
to move to the support member
4
side. Thereby, the spray device
2
is brought into the state of FIG.
1
. Then, the spray device
2
is retracted from between the fixed metal mold
11
and the movable metal mold
12
, and [the] both metal molds
11
&
12
are closed to commence the die casting work.
According to the spray device
2
having the foregoing structure, the following effects become obtainable.
(1) Since the first board portion
51
and the second board portion
52
are movable, the first board portion
51
can be put near to the inside surface of the fixed metal mold
11
and the second board portion
52
can be put near to the inside surface of the movable metal mold
12
respectively, as shown in FIG.
12
. Therefore, the mold release agent etc. can be sprayed onto the inside surface of both metal molds
11
&
12
accurately and securely. For this reason, the occurrence of defective die-cast products can be prevented.
(2) Since the first board portion
51
is so constructed that the nozzle cassette
53
is detachably fitted to the board base plate
511
, the replacement of the first board portion
51
can be done by only detaching and attaching the nozzle cassette
53
. In addition, the detaching/attaching operation can be done easily by actuating the clamp mechanism
55
. Therefore, the replacement of the board portion can be carried out easily and safely. The same effects can be obtained also in the second board portion
52
.
(3) Since the hood
533
of the first board portion
51
has a concave/convex configuration corresponding to the concave/convex configuration of inside surface of the fixed metal mold
11
as shown in
FIG. 12
, the mold release agent etc. can be sprayed securely onto side surfaces
112
of a convex configurations
111
of the fixed metal mold
11
. Since the hood
543
of the second board portion
52
has a concave/convex configuration corresponding to the concave/convex configuration of the inside surface of the movable metal mold
12
as shown in
FIG. 12
, the mold release agent etc. can be sprayed securely even onto side surfaces
121
of the movable metal mold
12
. Therefore, the mold release agent etc. can be sprayed thoroughly onto the inside surface of the both metal molds
11
&
12
. Consequently, the occurrence of defective die-cast products including seizure etc. cab be prevented more securely.
(4) As shown by
FIG. 5
, the other end of the holding bar
71
and the other end of the external slide tube
801
of the slide tube
80
slidably pierce and extend through the second board portion
52
. Namely, the other end of the first holding bar and the other end of the first slide tube sidably pierce and extend through the second board portion
52
. Therefore, as shown in FIG.
13
A through
FIG. 13D
, the moving distance of the first board portion
51
can be made large as compared with a case where the other end side of the first holding bar and the other end of the first slide tube do not pierce and extend through the second board portion
52
. Consequently, the spray nozzle
534
can be put nearer to the inside surface of the fixed metal mold
11
so that more accurate spray operation can be done.
FIG. 13A
shows a not-moving state in case where the other end of the holding bar
71
and the other end of the slide tube
80
do not pierce and extend through the second board portion
52
,
FIG. 13B
shows a moving state of the case same as above,
FIG. 13C
shows a not-moving state in case where the other end of the holding bar
71
and the other end of the slide tube
80
pierce and extend through the second board portion
52
, and
FIG. 13D
shows a moving state in the case same as above. As is obvious by comparing these states, the longest moving distance of the first board portion
51
in case when the piercing is not done is X
2
of
FIG. 13B
corresponding to X
1
of FIG.
13
A. However, the longest moving distance of the first board portion
51
in case when the piercing is done is Y
2
of
FIG. 13D
corresponding to Y
1
of FIG.
13
C. Y
2
is longer than X
2
by a length L that is realized by the holding bar
71
and the slide tube
80
which pierce the second board portion
52
.
The longest moving distance of the second board portion
52
is also prolonged in the same way as the case of the first board portion
51
. Namely, the other end of the second holding bar (a holding bar
73
etc.) and the other end of the second slide tube (slide tubes
85
through
89
) slidably pierce and extend through the first board portion
51
, as shown by FIG.
6
. Consequently, the moving distance of the second board portion
52
can be made large as compared with the case when the other end of the second holding bar and the other end of the second slide tube do not pierce the first board portion
51
, for the same reason as the cases shown by FIG.
13
A through FIG.
13
D. Therefore, the spray nozzle
544
can be put further near to the inside surface of the movable metal mold
12
, so that the spray operation can be done more accurately.
For this reason, in the spray device
2
having the above structure, the mold release agent etc. can be sprayed accurately onto spray points of the inside surfaces of the both metal molds
11
&
12
.
(5) Since the first board portion
51
is equipped with the first shock absorber
92
, the shock of striking of the first board portion
51
against the fixed metal mold
11
can be moderated and breakage of the spray nozzle
534
due to the striking can be prevented. Since the second board portion
52
is equipped with the second shock absorber
94
, the shock of striking of the second board portion
52
against the movable metal mold
12
can be moderated and breakage of the spray nozzle
544
due to the striking can be prevented.
(6) Since the two base plates
31
&
32
are supported by the turnbuckles
99
connected diagonally, the two base plates
31
&
32
can be held firmly in the perpendicular and oppositely-facing positions.
A structure as described below may be employed for the spray device
2
having the above structure.
In the second board portion
52
, the sub hood
5432
may be so designed as to actuate independently from the main hood
5431
. This working mechanism is approximately similar to the above-mentioned mechanism which moves the board portions
51
&
52
.
FIG. 14
is the front view showing the working mechanism of the sub hood
5432
, and
FIG. 15
is the view viewed in the direction of XV of FIG.
14
. The sub hood
5432
is supported to the board base plate
521
by means of one cylinder mechanism
101
, two holding bars
102
and three slide tubes
103
. The cylinder mechanism
101
is fixed to the board base plate
521
at its body
1011
, and to the sub hood
5432
at the tip end of its rod
1012
. The holding bar
102
slidably pierces the board base plate
521
. As for the slide tube
103
, its external tube
1031
is fixed to the board base plate
521
and the tip end of the internal tube
1032
is fixed to the sub hood
5432
, and the internal tube
1032
is connected to the spray nozzle
544
in the same structure as shown by FIG.
9
. The slide tube
103
is connected to the supply device
20
in the same way as the slide tube
80
etc. One end of the mechanical stopper
104
is fixed to the sub hood
5432
. The mechanical stopper
104
is so constructed that it moves together with the sub hood
5432
to cause an adjusting nut
104
provided at the other end to strike against the board base plate
521
. Thereby, the mechanical stopper
104
restricts the movement of the sub hood
5432
within the specified distance. Here, the cylinder mechanism
101
is controlled by a dog bar
106
equipped with a limit switch
105
.
In
FIG. 14
, when the rod
1012
extends in the direction B, the sub hood
5432
moves in the direction of B accompanied by the holding bar
102
and the slide tube
103
. When a nut
1061
contacts with the board base plate
521
, the sub hood
5432
stops its movement. When the two sub hoods
5432
move in the direction B, the sub hood
5432
goes into a deep portion of the concave configuration of the inside surface of the movable metal mold
12
, as shown by
FIG. 16
forming the sectional view taken on the line XVI—XVI of FIG.
12
. Thereby, the spray nozzle
544
can be put near to the deep portion and more accurate spray operation can be done onto the deep portion.
The board base plate
521
of
FIG. 14
may be fixed to the base plate
31
or the base plate
32
by a link arm
107
illustrated by chain lines of
FIG. 15
, independently and separately from the board base plate
521
provided on the main hood
5431
.
The structure using the above sub hood
5432
may be employed for the first board portion
51
.
Further, the supply device
20
is fixed to the perpendicular base plate
31
in the spray device
2
having the above-mentioned structure, however, the supply device
20
may be fixed to a horizontal base plate. In this case, as shown by FIG.
17
and
FIG. 18
forming the view viewed in the direction of XVIII of
FIG. 17
for example, a first arm
122
is extended downward from the base plate
121
and a support bar
123
is fixed to the first arm
122
, and a second arm
124
is extended downward from the support bar
123
and the support member
4
is supported by the second arm
124
. Then, the cylinder mechanism etc. are fixed to the support member
4
in the same way as the spray device
2
having the above structure.
Claims
- 1. A spray system for spraying a mold release agent and other materials onto inside surfaces of opened metal molds for a die canting machine; comprising:a base plate to which a supply device for distributing and supplying the mold release agent and other materials is mounted, a support member fixed to the base plate, a first cylinder mechanism and a second cylinder mechanism both fixed to the support member, a first slide tube and a second slide tube both fixed to the support member, a first board portion and a second board portion disposed oppositely on both sides of the support member and equipped with spray nozzles for spraying the mold release agent etc., a first holding bar one end of which is fixed to the first board portion and the other end of which slidably pierces and extends through the support member, and a second holding bar one end of which is fixed to the second board portion and the other end side of which slidably pierces and extends through the support member; wherein: the first slide tube is freely expandable between the support member and the first board portion and connects a supply outlet of the supply device and a passage inlet of the first board portion, the second slide tube is freely expandable between the support member and the second board portion and connects the supply outlet of the supply device and a passage inlet of the second board portion, each board portion is so constructed that a nozzle cassette is detachably fitted to a board base plate, the nozzle cassette is equipped with a large number of spray nozzles, and the spray nozzle is connected to the passage inlet of the board portion, each cylinder mechanism is composed of a cylinder body fixed to the support member and a rod expanding from and retracting in the cylinder body, the first cylinder mechanism is adapted to move the first board portion relative to the support member by expanding and retracting the rod in parallel with the first holding bar, and the second cylinder mechanism is adapted to move the second board portion relative to the support member by expanding and retracting the rod in parallel with the second holding bar.
- 2. A spray system as set forth in claim 1, wherein the first board portion and the second board portion do not move, in whichthe other end of the first holding bar also slidably pierces and extends through the second board portion, the first slide tube comprises an external tube and an internal tube expandable from the external tube, the tip end of the internal tube connects to the first board portion, and the external tube pierces and extends through the second board portion.
- 3. A spray system as set forth in claim 1, wherein the first board portion and the second board portion do not move, in whichthe other end side of the second holding bar also slidably pierces and extends through the first board portion, the second slide tube comprises an external tube and an internal tube expandable from the external tube, the tip end of the internal tube connects to the second board portion, and the external tube pierces and extends through the first board portion.
- 4. A spray system as set forth in claim 1, in which the nozzle cassette has concave and convex configurations corresponding to concave and convex configurations on the inside surfaces of the metal mold to be sprayed, and includes a number of spray nozzles on surfaces of the concave/convex configurations.
- 5. A spray system as set forth in claim 1, in which each board portion is provided with a shock absorber for moderating a shock occurring when the board portion strikes against the metal mold.
- 6. A spray system as set forth in claim 1, in which two base plates stand at right angles to the board portion and are disposed in such a way as facing each other, the supply device is fixed to the one-side base plate, and the two base plates are supported by diagonally connected turnbuckles.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2001-385388 |
Dec 2001 |
JP |
|
US Referenced Citations (3)
Foreign Referenced Citations (2)
Number |
Date |
Country |
06-210425 |
Aug 1994 |
JP |
08-323457 |
Dec 1996 |
JP |