Adjustable positioning pin device

Abstract

The utility model relates to an adjustable positioning pin device which is used for solving the problem that clamps are frequently replaced due to the difference of the outer diameters of workpieces in a traditional welding process and improving the welding efficiency and quality. The device comprises a fixed seat, a first sliding groove, a second sliding groove, a movable seat, an adjusting screw rod, a locking seat, a pin body, an ejector block and the like. The fixed seat is a box body with a cavity, the first sliding groove and the second sliding groove are formed in the left side wall, the right side wall, the front side wall and the rear side wall of the fixed seat respectively, the movable seat can move in the cavity of the fixed seat, and the adjusting screw is used for adjusting the position of the pin body. The top of the pin body is provided with an internal threaded hole, the side wall is uniformly provided with a plurality of hole sites, and a ball is arranged in the pin body. The ejector block is screwed into an internal threaded hole in the top of the pin body, and the ball is ejected into the hole. According to the technical scheme, the clamp replacement process is simplified, and the welding precision and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fasteners, in particular to an adjustable positioning pin device. BACKGROUND

[0002] In the traditional welding process, in order to weld and fix the workpieces with the same inner diameter but different outer diameters to the main structure, it is usually necessary to replace different positioning pin clamps according to the outer diameter size of the workpieces. Although this method can achieve the purpose of welding, the operation process is relatively cumbersome and time-consuming. At the same time, frequent replacement of clamps not only increases the production cost, but also may cause problems such as inaccurate positioning and unstable welding quality due to replacement of clamps. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to provide an adjustable positioning pin device, which aims to solve the problem of frequent replacement of clamps due to different outer diameters of workpieces in the traditional welding process, and improve the welding efficiency and quality. In order to achieve the above purpose, the present application provides the following technical scheme: an adjustable positioning pin device, comprising:

[0004] A fixed seat is a cavity box;

[0005] A first sliding groove is symmetrically arranged on the left and right side walls of the fixed seat;

[0006] A second sliding groove is symmetrically arranged on the front and rear side walls of the fixed seat, and the first sliding groove and the second sliding groove are on two mutually parallel and different height horizontal planes;

[0007] A moving seat is arranged in the fixed seat and can move in the cavity of the fixed seat, and two threaded holes adapted to the first sliding groove and the second sliding groove are arranged on the moving seat;

[0008] An adjusting screw has external threads and passes through the threaded holes, and the two ends of the adjusting screw are located in the two first sliding grooves or the two second sliding grooves, respectively, and the adjusting screw can slide in the first sliding groove or the second sliding groove;

[0009] A locking seat is fixedly connected to the moving seat, and the locking seat has a pin hole in the middle and an abutting surface is arranged on the inner wall of the locking seat;

[0010] A pin body has a hollow chamber, and an internal threaded hole is arranged at the top of the pin body, and a plurality of hole positions are uniformly arranged on the side wall of the pin body, a plurality of balls corresponding to the hole positions are arranged inside the pin body, and a center ball is arranged above the balls;

[0011] A top block with external threads and an internal threaded hole at the top of the pin body, the top block has an internal hexagonal recess, and the top block is screwed into the pin body, and the center ball can push the ball into the hole.

[0012] Preferably, the fixing seat is provided with fastening bolts for fixing to the workbench.

[0013] Preferably, the first sliding groove and the second sliding groove are both arranged off-center and on one side of the side wall.

[0014] Preferably, the abutting surface is a spherical surface, and the diameter of one side connected to the pin hole is smaller than the diameter of the other side.

[0015] Preferably, the fixing seat and the locking seat are both square, and the bottom side length of the locking seat is less than 1 / 2 of the bottom side length of the fixing seat.

[0016] Preferably, the diameter of the hole is smaller than the diameter of the ball.

[0017] Preferably, the diameter of the center ball is greater than 3 / 4 of the inner diameter of the pin body.

[0018] Preferably, the device further comprises a cover body, which covers the top of the fixing seat and is connected to the fixing seat through the fastening bolts, and the cover body is provided with a central hole for accommodating the movement of the pin body.

[0019] Preferably, the device further comprises a groove and a fastening ring, the groove is arranged on the side wall of the pin body and below the hole, and the fastening ring is sleeved in the groove.

[0020] Compared with the prior art, the device has the following advantages:

[0021] The adjustable positioning pin device effectively solves the problem of frequent replacement of clamps due to different workpiece diameters in traditional welding processes. Since the device is adjustable, it can quickly adapt to workpieces of different sizes, greatly reducing the time and labor cost of replacing clamps, thereby significantly improving the welding efficiency. The adjustment process of the device is simple and fast. By moving the moving seat in the cavity of the fixing seat and sliding the adjusting screw, the position of the pin body can be accurately adjusted to achieve precise positioning of the workpiece. This not only improves the welding quality, but also reduces the welding defect rate caused by inaccurate positioning. The device adopts a design of multiple balls corresponding to one hole, and the cooperation of the center ball and the top block ensures that the ball can be accurately pushed into the hole when the top block is screwed in, thereby ensuring the stability of the pin body and the accuracy of repeated positioning. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Figure 1 is a perspective view of a pin body clamping state of an adjustable positioning pin device according to an embodiment of the present application;

[0023] Figure 2 Figure 2 is a perspective view of a pin body pulling-out state of an adjustable positioning pin device according to an embodiment of the present application;

[0024] Figure 3 Figure 3 is a perspective view of a pin body partial structure of an adjustable positioning pin device according to an embodiment of the present application;

[0025] Figure 4 Figure 4 is a structure diagram of a moving seat and a locking seat;

[0026] Figure 5 Figure 5 is a perspective view of a pin body structure;

[0027] Figure 6 Figure 6 is a top view of a pin body;

[0028] Figure 7 Figure 7 is a cross-sectional view of A-A in Figure 6; Figure 6 Figure 8 is a cross-sectional view of B-B in Figure 6;

[0029] In the figure: 1, fixed seat; 2, first sliding groove; 3, second sliding groove; 4, moving seat; 5, threaded through hole; 6, adjusting screw; 7, locking seat; 8, pin hole; 9, abutting surface; 10, pin body; 11, hole position; 12, ball; 13, center ball; 14, top block; 15, fastening bolt; 16, cover body; 17, center hole; 18, groove; 19, fastening ring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] It should be noted that in the description of the present application, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] Moreover, it is to be understood that the dimensions of the various components illustrated in the drawings are shown for purposes of convenience and example only, and that in actual practice, dimensions can differ in dependence upon the particular implementation of the present application.

[0033] It is to be noted that like-identified components have like designations in the several drawings associated with the present application, and thus, where possible the first occurrence of each designation is briefly described so as to simplify the discussion.

[0034] To solve the technical problems in the background art, as shown in the specification Figures 1-7 The present application provides a technical solution: an adjustable positioning pin device, characterized as follows:

[0035] The fixed seat 1 is a box structure with a cavity, which can be made of metal materials such as steel or aluminum to ensure sufficient strength and stability. The cavity of the fixed seat 1 is used to accommodate the moving seat 4 and other components. The fixed seat 1 is installed on the welding workbench by bolts, welding or other fixing methods to ensure that the fixed seat 1 remains stable during the welding process. The first sliding groove 2 is symmetrically arranged on the left and right side walls of the fixed seat 1, and the second sliding groove 3 is symmetrically arranged on the front and rear side walls of the fixed seat 1. These sliding grooves can be long strip-shaped grooves for guiding the sliding of the adjusting screw 6. The first sliding groove 2 and the second sliding groove 3 are located on two mutually parallel and different height horizontal planes to avoid interference with each other and together provide the moving space of the adjusting screw 6 in two directions. The moving seat 4 is arranged in the fixed seat 1 and can move in the cavity of the fixed seat 1 along the first sliding groove 2 and the second sliding groove 3. The moving seat 4 is provided with two threaded holes 5 on it, which are adapted to the first sliding groove 2 and the second sliding groove 3 respectively for passing through the adjusting screw 6. The adjusting screw 6 has external threads, passes through the threaded holes 5 on the moving seat 4, and its two ends are located in the two first sliding grooves 2 or the two second sliding grooves 3 respectively. By rotating the adjusting screw 6, the precise positioning of the moving seat 4 in the cavity of the fixed seat 1 can be achieved to adapt to workpieces of different outer diameters. The locking seat 7 is fixedly connected to the moving seat 4 and has a pin hole 8 in the middle for inserting the pin body 10. The inner wall of the locking seat 7 is provided with an abutting surface 9, which can abut against part of the structure of the pin body 10 after the pin body 10 is inserted into the pin hole 8 to prevent displacement of the pin body 10 during the welding process. The pin body 10 has a hollow chamber, and the top is provided with an internal threaded hole for adapting with the external threads of the top block 14. The side wall of the pin body 10 is uniformly provided with a plurality of hole positions 11, and the inside is provided with a plurality of balls 12 corresponding to the hole positions 11, and a center ball 13 is arranged above the balls 12. The top block 14 has external threads which are adapted with the internal threaded hole at the top of the pin body 10. By rotating the top block 14, the center ball 13 can push the balls 12 into the hole positions 11, so as to be clamped into the abutting surface 9, thereby fixing the position of the pin body 10 in the locking seat 7.

[0036] It should be noted that the four sides of the fixed seat 1 are provided with fastening bolts 15 for fixing with the workbench. The fastening bolts 15 can be standard mechanical bolts, the number and distribution of which depend on the size of the fixed seat 1 and the specific requirements of the workbench. Through the fastening bolts 15, the fixed seat 1 can be firmly fixed on the welding workbench. The fastening bolts 15 are fixed by passing through the pre-set holes on the fixed seat 1 and docking with the corresponding holes on the workbench, and then tightening the nuts to achieve fixation.

[0037] Further, the first sliding groove 2 and the second sliding groove 3 are designed to be non-central, that is, they are not located at the center of the side walls of the fixed seat 1, but are arranged on one side of the side walls. This design can provide a larger adjustment range for the adjusting screw 6, so that the moving seat 4 has more moving space in the fixed seat 1 to adapt to different sizes of workpieces. The first sliding groove 2 is symmetrically arranged on one side of the left and right side walls of the fixed seat 1. This arrangement allows the adjusting screw 6 to rotate to adjust the moving seat 4, achieving sliding position in the left and right directions. The second sliding groove 3 is symmetrically arranged on one side of the front and rear side walls of the fixed seat 1. Similar to the first sliding groove 2, this arrangement allows the adjusting screw 6 to slide in the front and rear directions to adjust the position of the moving seat 4 in the front and rear directions.

[0038] It should be noted that the abutting surface 9 is designed as a spherical surface, specifically a part of a spherical surface, and the whole is annular. This design can provide better contact area and adaptability, making the cooperation between the locking seat 7 and the pin body 10 more stable and tight. The design of the spherical surface helps to disperse the pressure when stressed, reducing wear and tear. The pin hole 8 is a hole in the middle of the locking seat 7 for inserting the pin body 10. One side of the pin hole 8 is connected with the abutting surface 9, and the diameter of this side of the abutting surface 9 is smaller than the diameter of the other side, forming a horn shape with one side large and the other side small. This design allows the pin body 10 to enter first with the smaller diameter side when inserted into the pin hole 8, and then gradually transition to the larger diameter side, which ensures the stable insertion and fixation of the pin body 10.

[0039] Further, the fixed seat 1 is designed as a square structure, which can provide a stable base and is convenient for docking and fixing with the workbench. The length of the bottom side of the fixed seat 1 can be determined according to the size of the workbench and the size of the welded workpiece to ensure enough space to accommodate the moving seat 4 and other components. The locking seat 7 is also designed as a square structure, matching the shape of the fixed seat 1, to facilitate installation and alignment. The length of the bottom side of the locking seat 7 is less than 1 / 2 of the length of the bottom side of the fixed seat 1. This size design allows the locking seat 7 to have enough space to move and position inside the fixed seat 1 while maintaining the compactness of the structure. The length of the bottom side of the locking seat 7 is less than 1 / 2 of the length of the bottom side of the fixed seat 1. This size relationship helps to ensure that the locking seat 7 does not touch the side walls of the fixed seat 1 when moving inside the fixed seat 1, thereby avoiding interference during adjustment.

[0040] It is important to note that the hole sites 11 are a plurality of small holes evenly distributed on the sidewall of the pin body 10, used to accommodate the balls 12. The balls 12 are a plurality of small balls arranged inside the pin body 10, corresponding one-to-one with the hole sites 11. The diameter of the hole sites 11 is smaller than the diameter of the balls 12, such a design allows the balls 12 to fit tightly in the hole sites 11, but not completely sink into the hole sites 11, thus maintaining the stability and adjustability of the balls 12. When the top block 14 is screwed into the pin body 10, the center ball 13 on the top block 14 will push the balls 12 into the hole sites 11. Due to the diameter of the hole sites 11 being smaller than the diameter of the balls 12, the balls 12 will generate a certain pre-tightening force in the hole sites 11, which helps to improve the stability of the pin body 10 in the locking seat 7. When vibrations or impacts occur during the welding process, the pre-tightening force can prevent the balls 12 from coming out of the hole sites 11, thus maintaining the fixed position of the pin body 10.

[0041] It is important to note that the center ball 13 is a larger ball arranged on the top block 14, used to push the balls 12 into the hole sites 11. The pin body 10 is a component with a hollow chamber, inside which a plurality of balls 12 and hole sites 11 are arranged. The diameter of the center ball 13 is greater than 3 / 4 of the inner diameter of the pin body 10, such a design can ensure that the center ball 13 can generate enough pressure when pushed into the pin body 10, firmly pushing the balls 12 into the hole sites 11. When the top block 14 is screwed into the pin body 10, the center ball 13 will come into contact with the inner wall of the pin body 10 and generate pressure. Due to the larger diameter of the center ball 13, it can effectively push the balls 12 into the hole sites 11, while ensuring the stability of the top block 14 in the pin body 10. The larger diameter of the center ball 13 helps to improve the stability of the top block 14 in the pin body 10. During the welding process, even if vibrations or impacts occur, the larger center ball 13 can maintain the position of the top block 14, preventing the balls 12 from coming out of the hole sites 11.

[0042] It is important to note that the cover 16 is a component that covers the fixed seat 1, its main function is to protect the internal components of the fixed seat 1, such as the moving seat 4, the locking seat 7, the adjusting screw 6, etc., preventing dust and debris from entering, while also serving an aesthetic purpose. The cover 16 can be made of the same or different materials as the fixed seat 1, such as metal or plastic, depending on the required strength and wear resistance. The cover 16 is connected to the fixed seat 1 by means of fastening bolts 15. These fastening bolts 15 pass through corresponding holes in the cover 16 and the fixed seat 1, tightly fixing the two together. The cover 16 is provided with a central hole 17, which is used to accommodate the movement of the pin body 10. The size and shape of the central hole 17 should be larger than the outer diameter of the pin body 10, to ensure that the pin body 10 can move freely therein, while maintaining the integrity and sealing of the cover 16.

[0043] It is worth noting that the grooves 18 are a groove-shaped structure arranged on the side wall of the pin body 10, which are located below the hole positions 11. The main function of these grooves 18 is to provide mounting positions for the fastening ring 19. The shape and size of the grooves 18 should match the fastening ring 19 to ensure that the fastening ring 19 can be stably sleeved in the grooves 18. The fastening ring 19 is a ring-shaped component, which is used to sleeve in the grooves 18 of the pin body 10. The fastening ring 19 can be made of metal or plastic, etc. depending on the required strength and durability. The main function of the fastening ring 19 is to limit the sliding of the ball 12 in the pin body 10 to ensure the stability of the pin body 10 during welding.

[0044] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0045] Compared with the prior art, the beneficial effects of the present application are:

[0046] The adjustable positioning pin device of the present application effectively solves the problem of frequent replacement of fixtures due to different outer diameters of workpieces in traditional welding processes. Since the device has adjustability, it can quickly adapt to workpieces of different sizes, greatly reducing the time and labor cost of replacing fixtures, thereby significantly improving the welding efficiency. The adjustment process of the device is simple and fast. By moving the moving seat in the cavity of the fixed seat and sliding the adjusting screw, the position of the pin body can be accurately adjusted to achieve precise positioning of the workpiece. This not only improves the welding quality, but also reduces the welding defect rate caused by inaccurate positioning. The device of the present application adopts the design of multiple balls corresponding to one hole position, as well as the cooperation of the center ball and the top block, so that when the pin body is rotated into the top block, the ball can be accurately pushed into the hole position, thereby ensuring the stability of the pin body and the accuracy of repeated positioning.

Claims

1. An adjustable dowel device, characterized by, It includes: The fixed seat (1) is a cavity box; The first sliding groove (2) is symmetrically arranged on the left and right side walls of the fixed seat (1); The second sliding groove (3) is symmetrically arranged on the front and rear side walls of the fixed seat (1), and the first sliding groove (2) and the second sliding groove (3) are on two mutually parallel and different height horizontal planes; The moving seat (4) is arranged in the fixed seat (1) and can move in the cavity of the fixed seat (1), and two threaded holes (5) adapted to the first sliding groove (2) and the second sliding groove (3) are arranged on the moving seat (4); The adjusting screw (6) has external threads and passes through the threaded hole (5), and the two ends of the adjusting screw (6) are located in the two first sliding grooves (2) or the two second sliding grooves (3) respectively, and the adjusting screw (6) can slide in the first sliding groove (2) or the second sliding groove (3); The locking seat (7) is fixedly connected with the moving seat (4), the locking seat (7) has a pin hole (8) in the middle, and the inner wall of the locking seat (7) is provided with an abutting surface (9); The pin body (10) has a hollow chamber, and its top is provided with an internal threaded hole, and its side wall is uniformly provided with a plurality of hole positions (11), and the pin body (10) is provided with a plurality of balls (12) corresponding to the hole positions (11), and the balls (12) are provided with a center ball (13) above; The top block (14) has external threads and is adapted to the internal threaded hole at the top of the pin body (10), and the top block (14) has an internal hexagonal recess, and rotating the top block (14) into the pin body (10) can realize that the center ball (13) pushes the balls (12) into the hole positions (11).

2. The adjustable dowel pin apparatus of claim 1, wherein, The fixed seat (1) is provided with fastening bolts (15) around for fixing with the workbench.

3. The adjustable dowel pin apparatus of claim 1, wherein, The first sliding groove (2) and the second sliding groove (3) are not centrally arranged and are arranged on one side of the side wall.

4. The adjustable dowel pin apparatus of claim 1, wherein, The abutting surface (9) is a spherical surface, and the diameter of one side connected with the pin hole (8) is smaller than the diameter of the other side.

5. The adjustable dowel pin apparatus of claim 1, wherein, The fixed seat (1) and the locking seat (7) are square, and the bottom side length of the locking seat (7) is less than 1 / 2 of the bottom side length of the fixed seat (1).

6. The adjustable dowel pin apparatus of claim 1, wherein, The diameter of the hole position (11) is smaller than the diameter of the ball (12).

7. The adjustable dowel pin apparatus of claim 1, wherein, The diameter of the center ball (13) is greater than 3 / 4 of the inner diameter of the pin body (10).

8. The adjustable dowel pin apparatus of claim 2, wherein, It also includes a cover (16) which covers the top of the fixed seat (1) and is connected with the fixed seat (1) through the fastening bolts (15), and the cover (16) is provided with a central hole (17) for accommodating the movement of the pin body (10).

9. The adjustable dowel pin apparatus of claim 8, wherein, Also included are a groove (18) disposed on the side wall of the pin body (10) and below the hole site (11), and a fastening ring (19) sleeved in the groove (18).

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