Adjustable positioning pin

Abstract

The utility model belongs to the technical field of clamp positioning pins, and particularly relates to an adjustable positioning pin which comprises a supporting plate, and the right side of the supporting plate is fixedly connected with a workbench. The positioning pin body is moved upwards to drive the second trapezoidal blocks to make contact with and extrude the first trapezoidal blocks step by step, and the first trapezoidal blocks drive the moving rods to slide on the positioning rods and compress the springs. When one side of one of the plurality of second trapezoidal blocks is aligned with one side of the first trapezoidal block, the spring in a compressed state is reset, the spring drives the first trapezoidal block to be clamped with one of the plurality of second trapezoidal blocks through the moving rod, the positioning pin body is fixed, and the height of the positioning pin body can be adjusted; the T-shaped rod is pulled to drive the first trapezoidal block on the moving rod to move through the connecting block, so that the first trapezoidal block is separated from the second trapezoidal blocks in the multiple second trapezoidal blocks, the first trapezoidal block can be taken down from the workbench to be replaced, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of clamp positioning pin technology, specifically an adjustable positioning pin. Background Technology

[0002] Locating pins are used in many parts of automotive fixtures to accurately position automotive components.

[0003] In automotive welding workshops, the tail of the locating pin on the tooling fixture is typically fixed to the tooling table by a lock nut. Since the parts need to be spot-welded after installation, the lock nut of the locating pin is located below the part and is not visible to the workers. This easily leads to the lower electrode tip of the welding clamp damaging the locating pin and lock nut. Replacement requires cutting off the lock nut and the bottom of the locating pin, and then replacing them with new locating pins and lock nuts. Secondly, the height of the installed locating pins is custom-made according to actual needs and cannot be adjusted. Therefore, we propose an adjustable locating pin to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an adjustable positioning pin, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] An adjustable positioning pin includes a support plate, a worktable fixedly connected to the right side of the support plate, a through hole on the worktable, two grooves on the worktable, a positioning rod fixedly connected to the inner wall of one side of each groove, a moving rod slidably connected to the positioning rod, a spring welded between the end of the moving rod and the inner wall of the corresponding groove, the spring being movably sleeved on the corresponding positioning rod, a first trapezoidal block welded to the other end of the moving rod, T-shaped rods on both sides of the worktable, the ends of the T-shaped rods extending into the corresponding grooves and welded with connecting blocks, one side of the connecting block being fixedly connected to one side of the corresponding moving rod, a positioning pin body on the through hole, rectangular grooves on both sides of the positioning pin body, a plurality of second trapezoidal blocks fixedly connected to the inner wall of one side of each rectangular groove, one of the second trapezoidal blocks engaging with the corresponding first trapezoidal block.

[0009] Furthermore, limiting grooves are provided on both the left and right sides of the positioning pin body, and limiting blocks are slidably connected to the limiting grooves.

[0010] Furthermore, one side of the limiting block is fixedly connected to the inner wall of one side of the through hole, and the inner wall of one side of the limiting groove is open.

[0011] Furthermore, a guide hole is provided on one side of the inner wall of the groove, and the inner wall of the guide hole is slidably connected to the outer side of the corresponding T-shaped rod.

[0012] Furthermore, a limiting hole is provided on the movable rod, and the movable rod is slidably connected to the corresponding positioning rod through the limiting hole.

[0013] Furthermore, two mounting holes are provided on one inner wall of the support plate.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides an adjustable positioning pin, which has the following advantages:

[0016] This invention utilizes an upward-moving positioning pin to drive multiple second trapezoidal blocks upwards. These blocks gradually contact and press against a first trapezoidal block. The first trapezoidal block causes a moving rod to slide on the positioning rod, compressing a spring. When the positioning pin stops moving, one side of one of the second trapezoidal blocks aligns with one side of the first trapezoidal block. The compressed spring then resets, and the spring, via the moving rod, engages with the first trapezoidal block and another second trapezoidal block, thus fixing the positioning pin. Its height can be adjusted. Pulling the T-shaped rod, through the connecting block, moves the first trapezoidal block on the moving rod, separating it from the second trapezoidal block and allowing it to be removed from the worktable for replacement. The operation is simple and convenient. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the cut-open three-dimensional structure of the workbench of this utility model;

[0019] Figure 3 This is a partial three-dimensional structural diagram of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the positioning pin body of this utility model cut open.

[0021] In the diagram: 1. Support plate; 2. Workbench; 3. Through hole; 4. Groove; 5. Positioning rod; 6. Moving rod; 7. Spring; 8. First trapezoidal block; 9. T-shaped rod; 10. Positioning pin body; 11. Rectangular groove; 12. Second trapezoidal block; 13. Connecting block; 14. Limiting groove; 15. Limiting block; 16. Mounting hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] like Figure 1-4 As shown, an adjustable positioning pin according to one embodiment of this utility model includes a support plate 1. A worktable 2 is fixedly connected to the right side of the support plate 1. The worktable 2 has a through hole 3 and two grooves 4. A positioning rod 5 is fixedly connected to the inner wall of one side of the groove 4. A moving rod 6 is slidably connected to the positioning rod 5. A spring 7 is welded between the end of the moving rod 6 and the inner wall of the corresponding groove 4. The spring 7 is movably sleeved on the corresponding positioning rod 5. A first trapezoidal block 8 is welded to the other end of the moving rod 6. Both sides of the workbench 2 are provided with T-shaped rods 9. The ends of the T-shaped rods 9 extend into the corresponding grooves 4 and are welded with connecting blocks 13. One side of the connecting block 13 is fixedly connected to one side of the corresponding moving rod 6. A positioning pin body 10 is provided on the through hole 3. Rectangular grooves 11 are opened on both sides of the positioning pin body 10. Multiple second trapezoidal blocks 12 are fixedly connected to the inner wall of one side of the rectangular groove 11. One of the multiple second trapezoidal blocks 12 is engaged with the corresponding first trapezoidal block 8. The positioning pin body 10 moves upward. The positioning pin body 10 drives multiple second trapezoidal blocks 12 to move upward. These second trapezoidal blocks 12 gradually contact and press against their corresponding first trapezoidal blocks 8. Under the pressure, the first trapezoidal block 8 drives its corresponding moving rod 6 to slide on the positioning rod 5 and compress the spring 7. When the positioning pin body 10 stops moving, and one side of one of the second trapezoidal blocks 12 aligns with one side of the first trapezoidal block 8, the compressed spring 7 returns to its original position. The spring 7 then drives the first trapezoidal block 8 via the moving rod 6. The positioning pin body 10 is fixed by engaging with one of the multiple second trapezoidal blocks 12. Its height can be adjusted. When the positioning pin body 10 needs to be replaced, the T-shaped rod 9 is pulled. The T-shaped rod 9 drives the first trapezoidal block 8 on the moving rod 6 to move through the corresponding connecting block 13, so that the first trapezoidal block 8 separates from the corresponding second trapezoidal block 12. Then, the positioning pin body 10 can be moved to remove it from the worktable 2 for replacement. The operation is simple and convenient.

[0025] In some embodiments, limiting grooves 14 are provided on both the left and right sides of the positioning pin body 10, and limiting blocks 15 are slidably connected on the limiting grooves 14.

[0026] In some embodiments, one side of the limiting block 15 is fixedly connected to the inner wall of one side of the through hole 3, and the inner wall of one side of the limiting groove 14 is open. The limiting block 15 serves to limit the movement.

[0027] In some embodiments, a guide hole is provided on one side of the inner wall of the groove 4, and the inner wall of the guide hole is slidably connected to the outer side of the corresponding T-shaped rod 9.

[0028] In some embodiments, a limiting hole is provided on the moving rod 6, and the moving rod 6 is slidably connected to the corresponding positioning rod 5 through the limiting hole. The positioning rod 5 serves as a positioning tool.

[0029] In some embodiments, two mounting holes 16 are provided on one inner wall of the support plate 1.

[0030] Working principle or structural principle: During use, the support plate 1 is fixed to the place of use through the mounting holes 16 on the support plate 1. When it is necessary to adjust the height of the positioning pin body 10, the positioning pin body 10 is moved upward. The positioning pin body 10 drives multiple second trapezoidal blocks 12 to move upward. The multiple second trapezoidal blocks 12 gradually contact and press against the corresponding first trapezoidal block 8. Under the action of the pressing force, the first trapezoidal block 8 drives the corresponding moving rod 6 to slide on the positioning rod 5 and compress the spring 7. When the positioning pin body 10 stops moving, one side of one of the multiple second trapezoidal blocks 12 contacts one side of the first trapezoidal block 8. During side alignment, the spring 7, which is in a compressed state, returns to its original position. The spring 7 drives the first trapezoidal block 8 to engage with one of the multiple second trapezoidal blocks 12 via the moving rod 6, thereby fixing the positioning pin body 10. Its height can be adjusted. When the positioning pin body 10 needs to be replaced, pull the T-shaped rod 9. The T-shaped rod 9 drives the first trapezoidal block 8 on the moving rod 6 to move via the corresponding connecting block 13, so that the first trapezoidal block 8 separates from the corresponding multiple second trapezoidal blocks 12. Then, move the positioning pin body 10 to remove it from the worktable 2 for replacement. The operation is simple and convenient.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable dowel pin comprising a support plate (1), characterized in that: The right side of supporting plate (1) is fixedly connected with workbench (2), the workbench (2) is opened with through hole (3), the workbench (2) is opened with two recesses (4), the recess (4) one side inner wall is fixedly connected with positioning rod (5), the positioning rod (5) is slidably connected with moving rod (6), the moving rod (6) end and the corresponding recess (4) one side inner wall between welding spring (7), the spring (7) is movably sleeved on the corresponding positioning rod (5), the other end of moving rod (6) is welded with first trapezoidal block (8), the both sides of workbench (2) are equipped with T-shaped rod (9), the end of T-shaped rod (9) extends into the corresponding recess (4) and is welded with connecting block (13), the one side of connecting block (13) is fixedly connected with the one side of corresponding moving rod (6), the through hole (3) is equipped with positioning pin body (10), the both sides of positioning pin body (10) are opened with rectangular slot (11), the one side inner wall of rectangular slot (11) is fixedly connected with a plurality of second trapezoidal block (12), one of a plurality of second trapezoidal block (12) is engaged with the corresponding first trapezoidal block (8).

2. An adjustable dowel pin according to claim 1, wherein: The left side and the right side of positioning pin body (10) are opened with limiting slot (14), the limiting slot (14) is slidably connected with limiting block (15).

3. An adjustable dowel pin according to claim 2, wherein: The one side of limiting block (15) is fixedly connected with the one side inner wall of through hole (3), the one side inner wall of limiting slot (14) is provided with opening.

4. An adjustable dowel pin according to claim 3, wherein: The one side inner wall of recess (4) is opened with guide hole, the inner wall of guide hole is slidably connected with the outer side of corresponding T-shaped rod (9).

5. An adjustable dowel pin according to claim 4, wherein: The limiting hole is opened in moving rod (6), and moving rod (6) is slidably connected with corresponding positioning rod (5) through the limiting hole.

6. An adjustable dowel pin according to claim 5, wherein: The one side inner wall of supporting plate (1) is opened with two mounting holes (16).

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