A welding fixture auxiliary pin withdrawal device

Abstract

The utility model discloses a kind of welding fixture auxiliary pin withdrawal devices, including mounting bracket and the cylinder being set in the side of mounting bracket, the top of the push rod of cylinder is connected with top plate, and the top plate is provided with pin structure above, the bottom of the cylinder is fixed with bottom plate, the bottom edge of the bottom plate is provided with lug seat, the lug seat is connected with connecting rod by pivot, the other end of connecting rod is connected with Z type rod, the side of connecting rod is provided with waist slot, pivot is arranged in the waist slot, the other end of pivot is connected with connecting seat, and the top of the connecting seat is fixed with guide rod, the side of cylinder is passed by guide rod, and then connected with top plate, due to the cooperation of pivot and waist slot, connecting rod can drive the lifting of connecting seat, then the movement of guide rod is driven by connecting seat, so that guide rod drives top plate to move, so that pin structure moves downwards, realize pin withdrawal operation, prevent cylinder from being unable to return to non-working position after discharging, resulting in that positioning pin cannot be withdrawn.

Description

Technical Field

[0001] This utility model relates to the field of positioning pin retraction, and in particular to an auxiliary pin retraction device for welding fixtures. Background Technology

[0002] To ensure welding accuracy, two fixed locating pins are often used to position the parts to be welded, thereby ensuring welding precision. To facilitate part removal, after the welding process is completed, the part locating pins are retracted to the non-tooling state. However, due to the effect of welding deformation, the cylinder cannot retract to the non-working position after degassing, resulting in the locating pins being unable to retract and making it difficult to remove the product. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a welding fixture auxiliary pin retraction device, which can solve the following technical problems: In order to facilitate the removal of parts, after the welding process is completed, the part positioning pin is retracted to the non-tooling state. However, due to the influence of welding deformation, the cylinder cannot be retracted to the non-working position after degassing, resulting in the positioning pin being unable to retract and making it difficult to remove the product.

[0004] To solve the above technical problems, this utility model provides the following technical solution: a welding fixture auxiliary pin removal device, including a mounting bracket and a cylinder disposed on the side of the mounting bracket. The top end of the cylinder's push rod is connected to a top plate, and a pin structure is disposed above the top plate. A bottom plate is fixed to the bottom surface of the cylinder, and an ear seat is disposed at the bottom edge of the bottom surface of the bottom plate. The ear seat is connected to a connecting rod via a rotating shaft, and the other end of the connecting rod is connected to a Z-shaped rod. A waist-shaped groove is opened on one side of the connecting rod, and a rotating shaft passes through the waist-shaped groove. The other end of the rotating shaft is connected to a connecting seat, and a guide rod is fixed to the top surface of the connecting seat. The guide rod passes through the side of the cylinder and is connected to the top plate.

[0005] As a preferred embodiment of this utility model, a limiting block is fixed at the middle of the top surface of the connecting seat.

[0006] As a preferred embodiment of the present invention, the pin structure includes a mounting plate, which is fixed to the top surface of the top plate. An L-shaped support block is symmetrically arranged on the top surface of the mounting plate. A connecting block is fixed to the side of the L-shaped support block, and an L-shaped mounting seat is fixed on the connecting block. A positioning pin is provided on the top surface of the L-shaped mounting seat.

[0007] As a preferred technical solution of this utility model, the top surface of the positioning pin is a pin and the bottom surface is a bolt structure. After the positioning pin passes through the L-shaped mounting seat, it is screwed and fixed with the nut.

[0008] In a preferred embodiment of this invention, the connecting rod and the Z-shaped rod are connected by bolts.

[0009] Compared with the prior art, the beneficial effects that this utility model can achieve are: 1. Due to the cooperation between the rotating shaft and the waist-shaped groove, the angle of the connecting rod changes, which can drive the lifting and lowering of the connecting seat. Then, the connecting seat drives the movement of the guide rod, which in turn drives the top plate to move, thereby causing the pin structure to move down and realize the pin retraction operation. This prevents the cylinder from being unable to return to the non-working position after the air is released, which would cause the positioning pin to be unable to retract. 2. The height of the push rod is limited by the action of the limit block, so that the positioning pin can accurately reach the working position. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention in the first lifting position. Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention in the raised pin state; Figure 3 This is a schematic diagram of the third three-dimensional structure of the present invention in the raised pin state; Figure 4 This is a three-dimensional structural diagram of the present invention in the first state of being returned to its original condition; Figure 5 This is a schematic diagram of the second three-dimensional structure of the present invention in the returned state; The components are: 1. base plate; 2. cylinder; 3. guide rod; 4. top plate; 5. mounting plate; 6. L-shaped support block; 7. connecting block; 8. L-shaped mounting seat; 9. positioning pin; 10. Z-shaped rod; 11. mounting bracket; 12. connecting rod; 13. rotating shaft; 14. ear plate seat; 15. connecting seat; 16. limit block; 17. push rod; 18. waist-shaped groove. Detailed Implementation

[0011] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation are all within the protection scope of this utility model without creative effort.

[0012] Example: Please refer to Figures 1-5As shown, this utility model provides a welding fixture auxiliary pin removal device. The mounting bracket 11 serves as the main support structure, with a cylinder 2 fixed on the side. The push rod 17 of the cylinder 2 extends and retracts upwards. Two guide rods 3 are provided on both sides of the cylinder 2. The top of the two guide rods 3 and the push rod 17 are connected to a top plate 4. A mounting plate 5 is fixed on the top surface of the top plate 4. An L-shaped support block 6 is symmetrically arranged on the top surface of the mounting plate 5. A connecting block 7 is fixed on the opposite side of the L-shaped support block 6. An L-shaped mounting seat 8 is fixed on the side of the connecting block 7. A positioning pin 9 is fixed on the top surface of the L-shaped mounting seat 8. The positions of the L-shaped support block 6, the connecting block 7, and the L-shaped mounting seat 8 can all be adjusted according to the distance of the positioning holes of the actual product, thereby improving the adaptability of the pin structure. The positioning pin 9 consists of an upper pin and a stud structure below the pin. The stud structure passes through the L-shaped mounting seat 8 and engages with a nut, thereby fixing and removing the positioning pin 9.

[0013] like Figures 1-5 As shown, a base plate 1 is fixed to the bottom surface of cylinder 2. Guide rods 3 on both sides of cylinder 2 extend downward through the base plate 1 and are fixedly connected to the connecting seat 15. A limit block 16 is provided in the middle of the top surface of the connecting seat 15. When cylinder 2 extends, the limit block 16 acts as a stop block to control the extension length of cylinder 2. Therefore, the extension length of cylinder 2 can be adjusted according to the thickness of the limit block 16 so that cylinder 2 can accurately push the positioning pin 9 to a specific height.

[0014] like Figures 1-5 As shown, an ear plate seat 14 is provided at the bottom edge of the base plate 1. The ear plate seat 14 is connected to a connecting rod 12 via a rotating shaft 13. A waist-shaped groove 18 is provided in the middle of the connecting rod 12. Another rotating shaft 13 passes through the waist-shaped groove 18. After passing through the connecting rod 12, the rotating shaft 13 can pass through the connecting seat 15. The other end of the connecting rod 12 is connected to a Z-shaped rod 10 by bolts. The Z-shaped rod 10 increases the rotating arm of the connecting rod 12, so that the connecting seat 15 can be moved downward by pressing the Z-shaped rod 10 more easily. Specific working principle: When the positioning pin 9 is stuck, the force of the cylinder 2 cannot drive the mounting plate 5 to move down, thus preventing the complete pin retraction operation. Therefore, pressing the Z-shaped rod 10 causes the connecting rod 12 to rotate, which in turn drives the rotating shaft 13 to move down and slide within the waist-shaped groove 18. This causes the rotating shaft 13 to drive the connecting seat 15 to move down, thereby pulling down the top plate 4 through the guide rod 3, thus realizing the pin retraction operation. When the pin is lifted, it can be completed by the cylinder 2, and then the workpiece to be welded is positioned.

[0015] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", "up", "down", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A welding fixture auxiliary pin retraction device, comprising a mounting bracket (11) and a cylinder (2) disposed on the side of the mounting bracket (11), characterized in that: The top of the push rod (17) of the cylinder (2) is connected to a top plate (4). A pin structure is provided above the top plate (4). A bottom plate (1) is fixed to the bottom surface of the cylinder (2). An ear plate seat (14) is provided at the bottom edge of the bottom surface of the bottom plate (1). The ear plate seat (14) is connected to a connecting rod (12) through a rotating shaft (13). The other end of the connecting rod (12) is connected to a Z-shaped rod (10). A waist-shaped groove (18) is provided on one side of the connecting rod (12). A rotating shaft (13) passes through the waist-shaped groove (18). The other end of the rotating shaft (13) is connected to a connecting seat (15). A guide rod (3) is fixed to the top surface of the connecting seat (15). The guide rod (3) passes through the side of the cylinder (2) and is connected to the top plate (4).

2. The welding fixture auxiliary pin retraction device according to claim 1, characterized in that: A limit block (16) is fixed at the middle of the top surface of the connecting seat (15).

3. The welding fixture auxiliary pin retraction device according to claim 1, characterized in that: The pin structure includes a mounting plate (5), which is fixed to the top surface of the top plate (4). An L-shaped support block (6) is symmetrically arranged on the top surface of the mounting plate (5). A connecting block (7) is fixed on the side of the L-shaped support block (6), and an L-shaped mounting seat (8) is fixed on the connecting block (7). A positioning pin (9) is arranged on the top surface of the L-shaped mounting seat (8).

4. The welding fixture auxiliary pin retraction device according to claim 3, characterized in that: The top surface of the positioning pin (9) is a pin and the bottom surface is a bolt structure. The positioning pin (9) passes through the L-shaped mounting base (8) and is screwed and fixed with the nut.

5. The welding fixture auxiliary pin retraction device according to claim 1, characterized in that: The connecting rod (12) and the Z-shaped rod (10) are connected by bolts.

Images