This application claims the benefit of Korean Application No. 2007-25919, filed Mar. 16, 2007, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.
1. Field of the Invention
The present invention relates to a device for punching a sheet material such as papers, letters and cards, and more particularly to a punch device for punching a decoration pattern on edges of a sheet material where photos are attached.
2. Description of the Related Art
Generally, a punch device includes a jig in which a specific pattern hole is formed and a punch block having a sharp blade to pass through the pattern hole. The punch device performs punching a desired area in a sheet material with the pattern hole.
Such a punch device is widely used for punching an edge of a sheet material for decoration, to which a photo is to be attached. Conventionally, in doing so, a sheet material having a size lager than that of a photo to be attached may be provided, and then the corners and edges of the sheet material may be punched to a desired pattern by using a plurality of punch devices having different patterns.
Typically, photos are normalized in a size, while such a punch device is not normalized in terms of size. In this case, the sheet material should be sized according to the pattern of the punch device, not the photos. Otherwise, perforated pattern on the sheet material would not be consecutive, causing discontinuousness and/or dissymmetry of the perforated pattern. Further, the corners and edges of the sheet material should be punched by using a different kind of punch devices, respectively. Thus, there is a need for a punch device capable of punching corners and edges of a sheet material at the same time.
An object of the invention is to provide a punch device, which enables to punch a specific pattern successively along a corner and an edge of a sheet material having a size proportional to the size of a photo to be attached thereto.
Another object of the invention is to provide a punch device capable of simultaneously punching a corner and an edge of a sheet material.
According to the invention, a decoration sheet to be attached with a rectangular photo can be punched at a constant interval on the corner and the edge thereof. Since the punch area of a punch device of the invention is a unit area, or equal to or less than a half unit area according to the size of a photo, a uniform and successive pattern can be formed symmetrically on the corner and edge of the sheet material to thereby eliminate an overlap or an interference of the pattern by the photo when being attached thereto.
In order to accomplish the above object, the present invention provides a punch device for punching a sheet material to which a rectangular photo is to be attached, the punch device comprising: a jig having a corner punch area, in which a first pattern hole is formed, for punching a corner of the sheet material, and a edge punch area, in which a second pattern hole is formed, for punching an edge of the sheet material, the corner punch area and the edge punch area being adjacent to each other in the proceeding direction D of the sheet material; a base on which the jig rests and having a supply surface for feeding the sheet material to the jig; a corner punch block having a punch pin corresponding to the first pattern hole so as to pass through the first pattern hole for punching the corner of the supplied sheet material; a edge punch block having a punch pin corresponding to the second pattern hole so as to pass through the second pattern hole for punching the edge of the supplied sheet material; a housing enclosing the jig and the punch blocks inside and having an opening at the upper portion; a corner pressing lever pressing down the corner punch block; and an edge pressing lever pressing down the edge punch block.
Preferably, the base may comprise a guide rail formed along the proceeding direction D of the sheet material to contact with a front end of a first edge of the sheet material for guiding the movement of the sheet material, and a plurality of stoppers contacting with a front end of a second edge perpendicular to the first edge of the sheet material to position the sheet material.
More preferably, the plurality of stoppers are spaced from each other at a constant pitch P. Also, when the front end of the second edge of the sheet material contacts with a first stopper, the corner of the sheet material lies on the corner punch area, and the edge of the sheet material lies on the portion of the edge punch area.
In the present invention, the corner punch area, the edge punch area and the pitch between the stoppers have relations of L1=W1=L2, W2≦½W1, and P=L1=L2. Here, L1 is the length of the corner punch area parallel to the proceeding direction D of the sheet material, W1 is the width of the corner punch area perpendicular to the proceeding direction D of the sheet material, L2 is the length of the edge punch area parallel to the proceeding direction D of the sheet material, and W2 is the width of the edge punch area perpendicular to the proceeding direction D of the sheet material.
Preferably, the each of L1, L2, W1 and P is a unit length AU.
The sheet material may have a horizontal length LH(ST) and a vertical length LV(ST) wherein LH(ST)=N1×LU and LV(ST)=N1×LU. Here, N1 and N2 is an integer equal to or more than 3.
Also, the photo may have a horizontal length LH(PHT) and a vertical length LV(PHT) wherein LH(PHT)=n1×LU and LV(PHT)=n2×LU. Here, n1 and n2 is an integer equal to or more than 2. Further, the sheet material and the photo have relations of LH(ST)=LH(PHT+LU and LV(ST)=LV(PHT)+LU.
The invention may comprise an auxiliary base formed with the stoppers and detachably connected to the base. Preferably, a scale may be provided on at least one of the base or the auxiliary base.
The punch device of the invention may further comprise a corner pressing plate resting on the corner punch block and exposed through the opening of the housing; and an edge pressing plate resting on the edge punch block and exposed through the opening of the housing.
Also, the first pattern hole formed on the corner punch area may include an attachment slot into which an end of the corner of the photo is inserted.
These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings, in which like components are referred to by like reference numerals. In the drawings:
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to the
The punching mechanism is illustrated more in detail in
Also, a plurality of stoppers S1 to S5 are formed on the base 10, which contact a front end of a second edge (see E2 in
Also, the punch device of the present invention comprises a jig 40 having a gap horizontally formed to be supplied with the sheet material and a pattern hole 41 vertically formed in a specific design, and a punch blocks 51 and 52 moving up and down passing through the pattern hole 41 to thereby punch the sheet material.
The jig 40 rests on a recess 13 formed on the upper surface of the base 10. The jig 40 comprises an upper stripper jig 42 and a lower base jig 43 facing each other with the gap formed between them. The stripper jig 42 and the base jig 43 are connected each other by a connecting portion 44.
The stripper jig 42 and the base jig 43 face an upper surface and a lower surface of the sheet material which is supplied between the stripper jig 42 and the base jig 43, respectively. The shape of the pattern holes 41 on the stripper jig 42 and the base jig 43 is identical to each other, so that the punch blocks 51 and 52 pass through the pattern holes 41 to thereby punch the sheet material.
According to the present invention, as shown in
Hereinafter, ‘a punch area’ is defined as the area that is covered by each punching and the boundary where the pattern hole 41 can be formed. The pattern hole 41 may be formed in the punch area. Accordingly, a perforated pattern of the sheet material by the pattern hole 41 may be not coincident with the boundary of the punch area. The punch areas are divided separately so that they do not overlap each other when punching.
As shown in
L1=W1=L2,
W2≦½W1. Equation 1
The configuration in which the width W2 of the edge punch area 200 is equal to or less than a half width W1 of the corner punch area 100 is for preventing a perforated pattern at edges of the sheet material from being covered by or being interfered with a normalized photo when it is attached to the sheet material as described later.
Preferably, the length L1 and L2, and width W1 is a unit length LU.
L1=W1=L2=LU. Equation 2
Though the jig 40 is integrally formed one piece, it is not limited, alternately the jig may be divided separately depending on the corner punch area and the edge punch area.
The punch block consists of a corner punch block 51 corresponding to the corner punch area 100 of the jig 40, and an edge punch block 52 corresponding to the edge punch area 200 of the jig 40.
A punch pin 53 having a pattern corresponding to the hole 41 of the first pattern PT1 is provided on the lower surface of the corner punch block 51 so as to pass through the first pattern hole 41 for punching the sheet material.
A plurality of elastic members such as a spring are interposed between the punch blocks 51 and 52 and the jig 40 in order to bias the punch blocks 51 and 52 upward. Preferably, the elastic members may rest on the grooves 45 formed on the upper surface of the jig 40.
The assembly of the jig 40 and the punch blocks 51 and 52 is contained in a housing 20. Preferably, the housing 20 is detachably connected to the base 10. Specifically, hook protrusions 21 formed at the lower end of the housing 20 is inserted into hook grooves 14 on the upper surface of the base 10 to thereby combine the housing 20 and the base 10 each other.
Preferably, pressing plates 61 and 62 are provided at the upper portion of the punch blocks 51 and 52. According to the present invention, the pressing plates consist of a corner pressing plate 61 located on the corner punch block 51, and an edge pressing plate 62 located on the edge punch block 52. The pressing plates 61 and 62 are exposed through an opening 22 of the housing 20. The pressing plates 61 and 62 are prevented from popping out by shoulders 63 and 64 of the pressing plates 61 and 62 contacting with the periphery of the opening 22. The pressing plates 61 and 62 are adopted to facilitate the smooth operation of the pressing levers 31 and 32 with respect to the punch blocks 51 and 52.
The pressing levers 31 and 32 are pivotally connected to the upper end of the housing 20 so that protrusions 33 and 34 formed on the lower surface of the pressing levers 31 and 32 press the upper surfaces of the pressing plates 61 and 62 which are exposed through the opening 22 of the housing 20. According to the invention, the pressing levers consist of a corner pressing lever 31 pressing the upper surface of the corner pressing plate 61, and an edge pressing lever 32 pressing the upper surface of the edge pressing plate 62.
Pivot brackets 35 and 36 of the pressing levers 31 and 32 are fixed to support protrusions 15 by a connecting rod 16, so that the pressing levers 31 and 32 are connected capable of rotating up and down, however not limited to the embodiment, alternately the pressing levers may be connected to the upper end of the housing 20.
Means for positioning the sheet material to be supplied is provided on the base 10 in order to punch the sheet material at a constant pitch. Specifically, a plurality of stoppers S1 through S5 are formed on the base 10 in the proceeding direction D of the sheet material, i.e., perpendicular to the guide rail 11. It should be understood that the stoppers may be replaced with markings or lines. The stoppers S1 to S5 are spaced from each other by a constant pitch (see P in
The number of the stoppers S1 to S5 may be appropriately selected depending on the size of a photo. Preferably, more stoppers S1 to S5 may be provided by adopting an auxiliary base 10′ which is detachable to the base 10 by means of joint members 17. On the auxiliary base 10′ provided a plurality of stoppers S2 to S5 at a constant pitch P. Also, the auxiliary base 10′ further comprises an auxiliary guide rail 11′ extending from the guide rail 11 of the base 10.
According to the present invention, the pitch P between the stoppers S1 to S5 is equal to the length L1 of the corner punch area 100 or the length L2 of the edge punch area 200.
P=L1=L2=LU. Equation 3
Though the stoppers are illustrated as means for positioning the sheet material in the invention, not limited to the embodiment, they can be replaced with various modifications such as lines printed on the base.
Preferably, a scale or lines indicating the sequence of the stoppers may be printed on the surface of the base 10 and the auxiliary base 10′ for user's convenience. More preferably, the base 10 and the auxiliary base 10′ can be utilized for a scale or a cutting guide bar by providing a reference numeral on the other side 18 of the base 10 and the auxiliary base 10′.
L
H(PHT)
=n1×LU,
L
V(PHT)
=n2×LU. Equation 4
Here, n1 and n2 is an integer equal to or more than 2.
The photo PHT of
Meanwhile, a decoration sheet material ST for attaching the photo is illustrated in
L
H(ST)
=N1×LU,
L
V(ST)
=N1×LU. Equation 5
Here, N1 and N2 is an integer equal to or more than 3.
Also, preferably, the horizontal length LH(ST) and the vertical length LV(ST) of the sheet material ST is longer than the horizontal length LH(PHT) and the vertical length LV(PHT) of the photo by a unit length LU, respectively.
L
H(ST)
=L
H(PHT)
+L
U,
L
V(ST)
=L
V(PHT)
+L
U. Equation 6
The punch device of the present invention can be used provided that the photo PHT and the sheet material ST have the above relation. For example, the sheet material ST of
Now, a method of punching a rectangular sheet material using the punch device of the present invention is described.
Specifically, the sheet material ST is supplied on the supply surface of the base 10 to be inserted between the stripper jig 42 and the base jig 43 of the jig 40. Then, the front end of the first edge (see E1 in
In this state, a user presses the pressing levers 31 and 32. Then, the punch blocks 51 and 52 descend to punch the sheet material in the corner punch area 100 and the edge punch area 200, respectively. As a result, the first corner C1 and the first unit edge A1 are perforated with a first pattern PT1 and a second pattern PT2, respectively. Here, it should be noted that the corner C1 is punched over a unit area, while the unit edge A1 is punched over a half unit area.
After punching the first corner C1 and the first unit edge A1 of the sheet material, the sheet material ST is moved by a pitch P, i.e., a unit length, in the direction D in order to subsequently punch a second unit edge A2 of the sheet material ST, so that the front end of the second edge E2 abuts on a second stopper S2. In this state, the first unit edge A1 of the sheet material lies on the corner punch area, while the subsequent second unit edge A2 lies to overlap the edge punch area 200 by a half unit area. Then, only the edge pressing lever 32 is pressed down to thereby punch the second unit edge A2 of the sheet material ST with the second pattern PT2. Preferably, marking 70 is provided on the base 10 and the auxiliary base 10′ to help a user identify the sequence of punching.
After punching is performed, the sheet material ST is then moved by a pitch P, i.e., a unit length, in the direction D to position the front end of the second edge E2 to a third stopper S3. And then, the edge pressing lever 32 is pressed down to punch a third unit edge A3 with the second pattern PT2. The above operation is repeated until all the unit edges A1 to A4 of the first edge E1 are punched as shown in
Subsequently, in order to punch a second corner C2 in
In the above state, the second corner C2 of the sheet material ST lies on the corner punch area 100 over a unit area, while a fifth unit edge (see A5 in
A third and a fourth corners (C3 and C4 in
According to the present invention, the corners C1 to C4 of the sheet material are punched over a unit area (unit length by unit length) by the corner punch area 100, and unit edges A1 to A4 are punched over a half unit area (unit length by ½ unit length). Accordingly, as shown in the Figure, when attaching the photo to the punched sheet material, the photo is prevented from covering or interfering with at least a portion of the patterns on the sheet material. Also, it is possible to obtain a uniform and symmetric pattern along the edges of the sheet material. Otherwise, if the width W2 of the edge punch area 200 is larger than a half unit area, the pattern on the sheet material would be screened by the photo.
According to the present invention, since the sheet material proceeds by a unit length, thereby punching the corners and the edges of the sheet material over a unit area each time, the pattern would be formed at a uniform and constant interval.
The corner and the edge punch areas of the present invention are normalized to a unit length, so that the size of the sheet material may be easily selected depending on the size of a photo. Also, the sheet material does not have to be sized according to the size of the photo.
Further, means for punching the corners and the edges of the sheet material are integrally adopted in the punch device of the invention, which eliminates the needs to take punch devices for the corners and the edges separately in the prior art.
The present invention has been described in detail. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
Number | Date | Country | Kind |
---|---|---|---|
10-2007-0025919 | Mar 2007 | KR | national |