JPH05293U - Work clamp device for vertical welding machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a work clamp device for a vertical welding machine capable of reliably clamping even a protrusion such as a stud halt or burring in the middle of the clamp of a workpiece. thing. In a work clamp device of a vertical welding machine in which a work W is pressed against an abutting member and fixed by a clamp die 31 attached to a movable carriage 25, the clamp die 31 is attached to the movable carriage 25 at a mounting position. Adjustably installed. Movable carriage 2 of clamp die 31
5 is mounted so that the mounting position can be adjusted, and even if there is a protrusion P such as a stud halt or a burring in the middle of the clamp portion of the work W, the clamp die 31 avoids this and is attached to the movable carriage 25. Mounted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a work clamp device for a vertical welding machine, and more particularly to a work clamp device for a vertical welding machine that presses and fixes a work on an abutting member.

[0002]

[Prior Art]

 In a welding machine, especially a vertical welding machine, a work clamp device of a type that presses and fixes a work placed on a work table against a wall-shaped abutting member has been generally used in front of the abutting member. It has a clamp die provided on a movable carriage that can move up and down at a position and move in the pushing direction of the workpiece, and the movable carriage is driven forward to push the workpiece against the abutting member by the clamp die. It is designed to be applied and fixed.

In this work clamp device, the clamp mold is of a split type, and a plurality of clamp mold dividers are movable according to the height dimension of the clamp portion of the work to be clamped. By stacking in a carriage, a block-shaped clamp mold of the required size is constructed.

[0004]

[Problems to be solved by the device]

 In the work clamp device as described above, since the block-shaped clamp mold is constructed by stacking the clamp mold divided bodies on the movable carriage, the stud halt is formed in the middle part of the clamp part of the work. If there is a protrusion such as a burring, the clamp die may collide with the protrusion and damage the protrusion and the clamp die. For this reason, in such a case, the stacking height of the clamp mold divided bodies is limited to a height at which the clamp mold does not collide with the protrusion. However, in this case, the portion above the protrusion is not clamped, which makes the clamp of the workpiece unstable, which causes deterioration of the machining accuracy and quality of the workpiece.

The present invention has been made by paying attention to the above-mentioned problems in the conventional work clamp device, and there is a protrusion such as a stud halt or a burring in the middle part of the clamp part of the work. Another object of the present invention is to provide a work clamp device for a vertical welding machine that can reliably clamp this.

[0006]

[Means for Solving the Problems]

 According to the present invention, the above object is to provide a work clamp device for a vertical welding machine in which a work is pressed against an abutting member by a clamp die attached to a movable carriage in the vertical welding machine and fixed. The work piece clamping device of a vertical welding machine is characterized in that a clamp die is attached to the movable carriage so that the attachment position can be adjusted.

[0007]

[Action]

 According to the above configuration, the clamp die is attached to the movable carriage so that the attachment position can be adjusted, and even if there is a protrusion such as a stud halt or burring in the middle of the clamp portion of the work, the clamp die The mold is attached to the movable carriage in a manner that avoids this.

[0008]

【Example】

 Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 4 shows an example of a vertical automatic welding machine to which the work clamp device according to the present invention is applied. The vertical automatic welding machine 1 includes a base 3 and an upper frame 5 standing on the base 3, and a work table 7 supporting a box-shaped work W on the upper surface of the base 3. There is.

A processing head 11 having a welding torch 9 is provided on the upper frame 5 so as to be movable in each coordinate axis direction of the X-axis direction, the Y-axis direction, and the Z-axis direction.

A pair of barrier-shaped abutting members 13 are provided upright on the back side of the work table 7 on the base 3.

An operation box 17 is suspended and supported by an arm 15 on the upper frame 5, and an L-shaped arm 19 located above the work table 7 is provided. A clamp device 21 is attached.

The work clamp device 21 is vertically driven by a fluid pressure cylinder device 23, and is driven in a pressing direction of the work W against the abutting member 13, that is, a front-back direction by a fluid pressure cylinder device (not shown). A movable carriage 25 is provided.

As shown in detail in FIG. 1, a fixed clamp die 27 is fixed to the lower end of the movable carriage 25, and the movable carriage 25 has a guide groove extending in the vertical direction. 29 is formed, and a movable clamp die 31 is vertically engaged with the guide groove 29. The movable carriage 25 is formed with a long hole 33 extending in the vertical direction along the guide groove 29, and a fixing bolt 35 is inserted into the long hole 33. As shown in FIG. 2, the fixing bolt 35 is screwed into a screw hole 37 formed on the side portion of the movable clamp die 31 to fix the movable clamp die 31 at an arbitrary height position. It is like this.

As a result, as shown in FIG. 1 or FIG. 3, the movable clamp die 31 is fixed at a position separated from the lower fixed clamp die 27 by a distance higher than that of the fixed clamp die 27 and movable with the fixed clamp die 27. A space A is provided between the clamp die 31 and the clamp die 31.

Therefore, even if there is a protrusion P such as a stud bolt in the middle part of the clamp part of the work W, there is a space A between the fixed clamp mold 27 and the movable clamp mold 31 in this part. Correspondingly, the fixed clamp die 27 and the movable clamp die 31 come into contact with the clamp portion of the work W above and below the protrusion P, respectively. This ensures that the work W is properly clamped.

In the above, the present invention has been described in detail with respect to a specific embodiment, but the present invention is not limited to this, and various embodiments are possible within the scope of the present invention. There will be no doubt to one of ordinary skill in the art.

[0018]

[Effect of the device]

 As can be understood from the above description, according to the work clamp device of the vertical welding machine of the present invention, the clamp die is attached to the movable carriage with the attachment position adjustable, and the work die is attached to the middle portion of the clamp portion of the work. Even if there is a protrusion such as a stud halt or burring, the clamp mold can be attached to the movable carriage so as to avoid it, so even if there is a protrusion such as the middle of the clamp part of the work piece, Will be clamped accurately, and deterioration of machining accuracy and quality of the workpiece due to defective clamping can be avoided.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment in which a work clamp device according to the present invention is applied to a vertical automatic welding machine.

FIG. 2 is a perspective view showing an embodiment of a clamp die used in the work clamp device according to the present invention.

FIG. 3 is a side view showing a clamped state of the work clamp device according to the present invention.

FIG. 4 is a perspective view showing an example of a vertical automatic welding machine to which the work clamp device according to the present invention is applied.

[Explanation of symbols]

 1 Vertical type automatic welding machine 3 Base 5 Upper frame 7 Work table 9 Welding torch 11 Processing head 13 Abutment member 21 Work clamp device 25 Movable carriage 27 Fixed clamp mold 31 Movable clamp mold 35 Fixed bolt

Claims (1)

[Claims for utility model registration] [Claim 1] A work clamp device for a vertical welding machine for pressing and fixing a work to an abutting member by a clamp die attached to a movable carriage in the vertical welding machine. A work clamp device for a vertical welding machine, wherein a clamp die is attached to the movable carriage so that the attachment position can be adjusted.