Patent Application
20190283106
The present invention relates to a tube flaring tool, and more particularly to a tube positioning device of a tube flaring tool.
For the task of butt connection of two tubes, one of the tubes had to be flared for the other tube to be inserted therein. A tube flaring tool is applied to flare the tube for the butt connection. A tube is put on a clamping device of the tube flaring tool, and a swaging punch is forced to be squeezed into the tube to flare it. However, the tube may be broken by the when swaging punch there is a part extruded out of the clamping device.
Taiwan utility model patent no. M519558 disclosed a positioning device of a tube flaring tool, which provides a shaft in a cavity of a clamping device. A stopping member has a hub fitted to the shaft for rotation. The hub has an extending portion at an end distal to the cavity, and the extending portion has a stopping plate to abut against an end of the tube for positioning of the tube.
The clamping device is a brand new device of the aforesaid patent, and the structure thereof is very complex. Besides, the stopping device is connected to the shaft all the time without any device to fasten it, so that the free-moving stopping device may interrupt the tube flaring task.
In view of the above, the primary objective of the present invention is to provide a positioning device of a tube flaring tool, which provides the tube a precise positioning without the problem of interruption.
The secondary objective of the present invention is to provide a positioning device of a tube flaring tool, which provides a movable stopping plate to position the tube at a precise position.
The third objective of the present invention is to provide a positioning device of a tube flaring tool, which provides a stop plate to be removed and stored in an easy way.
In order to achieve the objective of the present invention, a clamping device of a tube flaring tool for precisely positioning a tube for a flaring task includes a base having top, a bottom opposite to the top, a first lateral side connected to the top and the bottom, a second lateral side connected to the top and the bottom and opposite to the first lateral side, a front side connected to the top, the bottom, the first lateral side and the second lateral side, a rear side connected to the top, the bottom, the first lateral side and the second lateral side and opposite to the front side, and a slot having an opening at the top, wherein the slot has a first end proximal to the front end and a second end opposite to the first end and proximal to the rear end; a clamping assembly having a first clamping member and a second clamping member, both of which are received in the slot of the base to clamp a tube therebetween, wherein the clamping assembly has a working end proximal to the first end of the slot to form a gap therebetween; and a stopping member having a stopping portion and a resting portion connected to the stopping portion, wherein the stopping portion is removably received in the gap, and the resting portion rests against the top of the base when the stopping portion is received in the gap.
The present invention will be best understood by referring to the following detailed description of some illustrative embodiments in conjunction with the accompanying drawings, in which
As shown in
The base 22 further has a slot 26 with an opening at the top 220 thereof. The slot 26 has a first end 260 and a second end 262 opposite to the first end 260, wherein the second end 262 is adjacent to the rear side of the base 22, and the first end 260 is between the front side and the rear side.
The clamping assembly 24 includes a first clamping member 240, a second clamping member 242, and a pin 244 with opposite end received in holes of the first and the second clamping members 240, 242 to position the first and the second clamping members 240, 242. The first and the second clamping members 240, 242 each has a recess to form a cavity, and a tube 12 is adapted to be clamped by the first and the second clamping members 240, 242 and have a portion received in the cavity.
A stopping member 30 has a stopping portion 32 and a resting portion 34 connected to the stopping portion 32. An angle is formed between the stopping portion 32 and the resting portion 34. In the first preferred embodiment, the stopping member 30 is a bent plate to have the stopping portion 32 and the resting portion 34 at opposite sides of a bending portion.
As shown in
As shown in
As shown in
As the description above, the end of the tube 12 may be precisely and firmly positioned at a predetermined position in the clamping assembly 24 by the top member 30 and the driving member 50. Next, remove the stopping member 30, and connect the faring device 10 to the clamping device to the clamping device 20, and then drive a punch to move into the tube 12 via the end to flare the tube 12.
The present invention provides the stopping member 30 inserted into the gap 40 between the clamping assembly 24 and a sidewall of the slot 26 to precisely position the tube 12 clamped by the clamping assembly 24 that benefits to the following flaring task.
The stopping member 30 is removed and stored before the flaring task so that it would not interrupt the flaring task.
It must be pointed out that the embodiments described above are only some preferred embodiments of the present invention. All equivalent structures which employ the concepts disclosed in this specification and the appended claims should fall within the scope of the present invention.
