Pneumatic clamping device

Abstract

The utility model provides a pneumatic clamping device which comprises a fixing seat, a retainer, an inclined block movable claw and an air cylinder, a fixing strip is arranged on one side of the top face of the fixing seat, and the retainer is arranged on the other side of the top face of the fixing seat and opposite to the fixing strip. An L-shaped through groove penetrating through the top face and the bottom face of the retainer is formed in the retainer, two guide through grooves communicated with the L-shaped through groove are formed in the side face, close to the fixing strip, of the retainer, and the inclined block movable claw is arranged on the lower portion of the L-shaped through groove and can stretch out of the two guide through grooves under stress. The air cylinder is arranged on the top face of the retainer, the driving shaft end of the air cylinder is connected with a lower pressing block, and the lower pressing block is located in the L-shaped through groove and can downwards push the inclined block movable claw to move and stretch out. The pneumatic clamping device is arranged on the table board of the terminal crimping machine for use, and the crimping die can be conveniently fixed and disassembled.

Description

Technical Field

[0001] The utility model relates to the field of automobile wire harness processing equipment, in particular to a pneumatic clamping device. Background Art

[0002] In the production of wire harnesses, it is often necessary to crimp the wire harnesses and terminals. By setting terminals at the ends of the wire harnesses that can communicate with the internal wires of the wire harnesses, the wire harnesses can be connected to other wire harnesses or electrical appliances. In practice, there are many specifications of wire harness terminals. The terminal crimping machines used for the same type of terminals may be the same, but the crimping dies used are different. In order to facilitate the fixing and disassembly of different crimping dies, we have developed a variety of clamping devices. However, a certain terminal crimping machine has a different spatial layout from other crimping machines and a different type of fixed die, so the existing clamping device cannot be used. Therefore, we have developed a new pneumatic clamping device. Summary of the invention

[0003] The utility model provides a pneumatic clamping device used for fixing a crimping die.

[0004] The technical solution adopted by the utility model is:

[0005] A pneumatic clamping device comprises a fixed seat, a retaining frame, a bevel block movable claw, and a cylinder, wherein a fixed strip is arranged on one side of the top surface of the fixed seat, and the retaining frame is arranged on the other side of the top surface of the fixed seat and is arranged opposite to the fixed strip; an L-shaped through groove running through the top and bottom surfaces of the retaining frame is provided, and two guide through grooves connected to the L-shaped through groove are provided on the side surface of the retaining frame close to the fixed strip, and the bevel block movable claw is arranged at the lower part of the L-shaped through groove and can be extended from the two guide through grooves under force; the cylinder is arranged on the top surface of the retaining frame, and a downward pressure block is connected to the driving shaft end of the cylinder, and the downward pressure block is located in the L-shaped through groove and can push the bevel block movable claw to move and extend downward.

[0006] Preferably, the inclined block movable claw comprises an inclined block and two movable claws arranged on one side of the inclined block, a spring is arranged between a side surface of the inclined block close to the two movable claws and an inner wall of the L-shaped through groove, and the two movable claws extend into the guide through groove.

[0007] Preferably, a side surface of the inclined block away from the two movable claws is an upwardly inclined yielding inclined surface, and the pressing block has a pressing inclined surface matched with the yielding inclined surface.

[0008] Preferably, the lower portion of the downward pressing slope of the downward pressing block is movably attached to the upper portion of the yielding slope of the inclined block.

[0009] Preferably, one side of the fixing bar close to the retaining frame is inclined downward and inward to form a first clamping inclined surface, and the upper part of one side surface of the two movable claws close to the fixing bar is a vertical surface, and the lower part thereof is inclined downward and inward to form a second clamping inclined surface.

[0010] Preferably, the retaining frame is an L-shaped rectangular block with an L-shaped through slot, and one end of the retaining frame away from the fixing strip is located outside the top surface of the fixing seat.

[0011] Preferably, the fixing seat is provided with a plurality of mounting through holes.

[0012] Compared with the prior art, the beneficial effect of the utility model is that the pneumatic clamping device is arranged on the table of the terminal crimping machine for use, and can conveniently realize the fixing and disassembly of the crimping die. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model in a non-working state.

[0014] Figure 2 for Figure 1 Schematic diagram of the structure without the cage.

[0015] Figure 3 for Figure 1 Exploded diagram of .

[0016] Figure 4 This is a top view of the retaining frame.

[0017] In the figure: 1, fixed seat; 2, fixed bar; 3, retaining frame; 4, inclined block and movable claw; 5, cylinder; 6, spring; 7, pressing block; 8, L-shaped through groove; 9, guide through groove; 10, mounting through hole; 21, first clamping inclined surface; 41, inclined block; 42, movable claw; 411, giving way inclined surface; 421, second clamping inclined surface; 422, vertical surface; 71, pressing inclined surface. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described below in combination with specific implementation methods. The drawings are only used for exemplary descriptions, and only show schematic diagrams rather than physical drawings, and cannot be understood as limitations of this patent; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0019] The pneumatic clamping device of the utility model comprises a fixed seat 1, a retaining frame 3, a ramp block movable claw 4, and a cylinder 5. A fixed strip 2 is arranged on one side of the top surface of the fixed seat 1, and the fixed strip plays a role of positioning and matching clamping. The retaining frame 3 is arranged on the other side of the top surface of the fixed seat 1 and is arranged opposite to the fixed strip 2; an L-shaped through groove 8 running through the top and bottom surfaces of the retaining frame 3 is opened, and two guide through grooves 9 connected to the L-shaped through groove 8 are opened on the side of the retaining frame 3 close to the fixed strip 2. The ramp block movable claw 4 is arranged at the lower part of the L-shaped through groove 8 and can The force extends out from the two guide slots; specifically, the inclined block claw 4 includes an inclined block 41 and two claws 42 arranged on one side of the inclined block 41. A spring 6 is arranged between the side of the inclined block 41 close to the two claws 42 and the inner wall of the L-shaped slot. Here, two springs are arranged in parallel and spaced apart. The two claws 42 extend into the guide slot 9; the cylinder 5 is arranged on the top surface of the retaining frame 3. The driving shaft end of the cylinder 5 is connected to a pressing block 7. The pressing block 7 is located in the L-shaped slot 8 and can move downward to push the inclined block claw to move so that the two claws extend. Figure 1 , Figure 2 As shown, in the non-working state, the movable claw of the inclined block moves to the left under the action of the spring, and the right ends of the two movable claws do not extend out of the guide slot, which does not affect the placement of the crimping mold; when working, the cylinder drive shaft extends to drive the lower pressure block to move downward, and then pushes the movable claw of the inclined block to move to the right, so that the two movable claws extend from the guide slot and cooperate with the fixing bar to achieve clamping.

[0020] like Figure 2 , Figure 3 As shown, the side of the inclined block 41 away from the two movable claws 42 is an upwardly inclined yielding inclined surface 411, and the pressing block 7 has a pressing inclined surface 71 adapted to the yielding inclined surface 411. Further, in order to limit the position of the movable claw of the inclined block and facilitate accurate downward pressing of the pressing block, in the non-working state, the lower part of the pressing inclined surface 71 of the pressing block 7 is movably attached to the upper part of the yielding inclined surface 411 of the inclined block 41. The pressing block 7 is limited to slide up and down in the retaining frame, and the movable claw 4 of the inclined block is limited to slide left and right in the retaining frame.

[0021] Furthermore, the side surface of the fixing bar 2 close to the retaining frame 3 is tilted downward and inward to form a first clamping slope 21, and the upper part of the side surface of the two movable claws 42 close to the fixing bar 2 is a vertical surface 422, and the lower part thereof is tilted downward and inward to form a second clamping slope 421. The first clamping slope of the fixing bar cooperates with the second clamping slopes of the two movable claws to achieve the clamping of the crimping mold. Among them, the vertical surface is used to reduce the length of the second clamping slope to avoid the problem that when the slope is too long, the stroke required for opening is large, thereby making the size of the retaining frame large. At the same time, the upper part of the vertical surface of the two fixing claws is tilted upward and inward to form a protective slope to avoid the problem that scratches may be caused by the right angle at the top.

[0022] In this embodiment, the retainer 3 is an L-shaped rectangular block with an L-shaped through slot, and the end of the retainer 3 away from the fixing bar is located outside the top surface of the fixing seat. The shape of the retainer is to adapt to the existing crimping machine space layout and make way for it. The retainer is partially located outside the fixing seat in order to observe the state of the movable claw of the inclined block and the lower pressing block in the retainer and make adjustments.

[0023] In addition, the fixing base 1 is provided with a plurality of mounting through holes 10. The fixing base is fixed on the table of the crimping machine by using the mounting through holes, and then the crimping die is placed on the fixing base to achieve compression.

[0024] The use process of the utility model is as follows: first fix the pneumatic clamping device on the table of the crimping machine, then place the crimping mold on the fixed seat, one side of the base of the crimping mold is set close to the first clamping inclined surface of the fixing strip, then start the cylinder, the driving shaft of the cylinder extends out, drives the lower pressing block to move downward, under the joint action of the retaining frame, the fixing seat and the inclined surface, pushes the movable claw of the inclined block to move rightward, under the joint action of the fixing strip, the pneumatic clamping device is in a clamping state, at this time, the second clamping inclined surfaces of the two movable claws are in contact with the right side surface of the bottom plate of the crimping mold, so as to realize the clamping of the crimping mold; the driving shaft of the cylinder retracts, and under the action of two springs, the movable claw of the inclined block moves to the left, and the pneumatic clamping mechanism is in an open state, at this time, the two movable claws retract into the guide groove, and the crimping mold can be moved out.

Claims

1. A pneumatic clamping device, characterized in that: It includes a fixed seat, a retaining frame, a movable claw of an inclined block, and a cylinder. A fixed strip is arranged on one side of the top surface of the fixed seat, and the retaining frame is arranged on the other side of the top surface of the fixed seat and is arranged opposite to the fixed strip; an L-shaped through groove running through the top and bottom surfaces of the retaining frame is provided, and two guide through grooves connected to the L-shaped through groove are provided on the side of the retaining frame close to the fixed strip, and the movable claw of the inclined block is arranged at the lower part of the L-shaped through groove and can be extended from the two guide through grooves under force; the cylinder is arranged on the top surface of the retaining frame, and a downward pressure block is connected to the driving shaft end of the cylinder, and the downward pressure block is located in the L-shaped through groove and can push the movable claw of the inclined block to move and extend downward.

2. The pneumatic clamping device according to claim 1, characterized in that: The inclined block movable claw comprises an inclined block and two movable claws arranged on one side of the inclined block, a spring is arranged between a side surface of the inclined block close to the two movable claws and an inner wall of the L-shaped through groove, and the two movable claws extend into the guide through groove.

3. The pneumatic clamping device according to claim 2, characterized in that: A side surface of the inclined block away from the two movable claws is an upwardly inclined yielding inclined surface, and the pressing block has a pressing inclined surface matched with the yielding inclined surface.

4. The pneumatic clamping device according to claim 3, characterized in that: The lower part of the downward pressing inclined surface of the downward pressing block is movably attached to the upper part of the yielding inclined surface of the inclined block.

5. The pneumatic clamping device according to claim 1, characterized in that: The side surface of the fixing bar close to the retaining frame is tilted downward and inward to form a first clamping inclined surface, and the upper part of the side surface of the two movable claws close to the fixing bar is a vertical surface, and the lower part thereof is tilted downward and inward to form a second clamping inclined surface.

6. The pneumatic clamping device according to claim 1, characterized in that: The retaining frame is an L-shaped rectangular block with an L-shaped through slot, and one end of the retaining frame away from the fixing strip is located outside the top surface of the fixing seat.

7. The pneumatic clamping device according to claim 1, characterized in that: The fixing seat is provided with a plurality of mounting through holes.

Images