Positioning die for assembling chain links

Abstract

The utility model discloses a positioning mould for assembling a chain link, which relates to the technical field of chain manufacturing moulds and comprises a placing block for placing the chain link and a supporting block arranged on the placing block and used for placing external accessories, side plates are arranged on two sides of the supporting block, pin holes are arranged on the chain link, a containing groove is arranged on the placing block, and a bottom plate is arranged on the containing groove. A lifting piece is arranged on the bottom plate and comprises a threaded cylinder and a lifting rod which are connected with the bottom plate, a positioning rod is arranged on the lifting rod, a driving block is arranged in the containing groove and connected with the inner wall of the containing groove through a rotating rod, one end of the driving block is rotationally connected with the rotating rod, the other end of the driving block is in an arc shape, a rack is arranged at one end of the driving block, and a rotary knob is arranged on the placing block. A driving piece is arranged at one end of the rotary knob, a gear meshed with the rack is arranged at one end of the driving piece, the fitting faces of traditional middle and outer accessories have diversity, the adjustment adaptability of chain links is not high, and the assembly applicability can be improved to a certain degree.

Description

Technical Field

[0001] The utility model relates to the technical field of chain manufacturing molds, in particular to a positioning mold for chain link assembly. Background Art

[0002] Chains are generally metal links or rings composed of multiple links. They are mostly used for mechanical transmission and traction. In machining workshops, many equipment require the use of chains, such as transmission chains, conveyor chains and traction chains. There are many types of chains, but their basic structures are only these types, and the others are all variations of these types.

[0003] The Chinese utility model patent with publication number CN218775986U discloses a positioning mold for chain links, including a base, a placement block for placing external accessories and chain links is arranged on the base, a pin hole is opened on the chain link, a positioning block for inserting the pin hole on the chain link is arranged at one end of the upper side of the placement block, a lifting piece is arranged at one end of the positioning block, and a support block for the external accessory to lean on is arranged at the other end of the upper side of the placement block, a positioning rod is arranged on the support block, and side plates are arranged on opposite sides of the outer wall of the support block. This utility model can reduce the offset between the external accessory and the chain link during welding, and can facilitate personnel to position the external accessory and the chain link, but the shape of the external accessory will change according to the actual application, and it has diversity. Although the chain link can be adjusted in height by moving the positioning block up and down, the chain link is always in a flat placement state and in contact with the contact surface of the external accessory. When the contact surface of the external accessory is inclined, it is inconvenient to adjust the chain link to a suitable inclination angle to fit the contact surface of the external accessory, and the overall assembly applicability is not high. Summary of the invention

[0004] The utility model aims to provide a positioning die for chain link assembly, which can improve the assembly applicability to a certain extent.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a positioning mold for chain link assembly, comprising a placement block for placing chain links and a support block arranged thereon for placing external accessories, side plates are arranged on both sides of the support block, pin holes are opened on the chain links, a receiving groove is opened on the placement block, a bottom plate is arranged on the receiving groove, a lifting member is arranged on the bottom plate, the lifting member comprises a threaded barrel connected to the bottom plate and a lifting rod threadedly connected thereto, a positioning rod is arranged on the lifting rod to be plugged and matched with the pin hole, A driving block is arranged in the accommodating groove, the bottom plate is arranged on the driving block, the driving block is connected to the inner wall of the accommodating groove through a rotating rod, one end of the driving block is rotatably connected to the rotating rod, and the other end is arranged in an arc shape, a rack is arranged on the end of the driving block away from the rotating rod, a knob is arranged on the placement block, a driving member is arranged at one end of the knob, and a gear meshing with the rack is arranged at one end of the driving member, and when the driving member is driven, it can drive the gear to mesh with the rack for transmission, thereby making the driving block rotate a certain angle around the central axis of the rotating rod.

[0006] Preferably, the driving member includes a worm wheel sleeved on the outer wall of the knob and a worm located in the accommodating groove and cooperating with the worm wheel, and the gear is sleeved on the outer wall of the worm.

[0007] Preferably, a friction pad is provided on the outer wall of the positioning rod.

[0008] Preferably, a positioning bolt is provided on one end of the knob located outside the placement block.

[0009] Preferably, a guide groove is provided on the inner wall of the accommodating groove, the rotating rod is slidably connected to the guide groove, a positioning block is provided on the outer wall of the rotating rod, one end of the positioning block is located outside the accommodating groove, a threaded hole is provided on the outer wall of the placement block, and a fastening bolt that is threadedly engaged with the threaded hole is provided on the positioning block.

[0010] Preferably, the knob is slidably provided with an extension tube at one end of the accommodating groove, the worm gear is sleeved on the extension tube, an extension block is provided at one end of the positioning block and connected to the extension tube, and a bracket is provided on the extension block and connected to the worm.

[0011] The beneficial effects of the utility model are as follows: the utility model drives the worm wheel and the worm to engage with each other by turning the knob, so that the gear on the worm engages with the rack on the driving block, and the driving block drives the base plate that can support the chain link to rotate around the central axis of the rotating rod at a certain angle, thereby changing the placement angle of the chain link on the base plate, and adapting to the external accessory fitting surface on the supporting block. Compared with the prior art, the applicability of assembly between the chain link and the external accessory is improved. At the same time, by arranging a positioning bolt on the knob, it is convenient for personnel to limit the rotation position of the knob, ensuring that when the chain link and the external accessory are welded, the base plate supporting the chain link will not be pressed and driven to change position. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram for displaying the upper part of the mechanism of the placement block in one embodiment of the utility model;

[0013] Figure 2 This is an exploded view for showing a partial mechanism of the placement block in one embodiment of the utility model;

[0014] Figure 3 for Figure 2 A magnified view of part A;

[0015] Figure 4 for Figure 2 A magnified view of part B;

[0016] Figure 5 This is a schematic diagram for separately showing the structure of the upper part of the knob in one embodiment of the utility model.

[0017] 1. Positioning block; 2. Chain link; 3. Side plate; 4. Support block; 5. Pin hole; 6. Positioning rod; 7. Lifting rod; 8. Threaded cylinder; 9. Bottom plate; 10. Gear; 11. Positioning bolt; 12. Knob; 13. Receiving groove; 14. Worm gear; 15. Bracket; 16. Extension block; 17. Worm; 18. Friction pad; 19. Turning rod; 20. Positioning block; 21. Fastening bolt; 22. Rack; 23. Threaded hole; 24. Guide groove; 25. Extension cylinder; 26. External accessory; 27. Driving block. DETAILED DESCRIPTION

[0018] The following is only a preferred implementation of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. At the same time, it should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0019] It should be noted that, in this article, relational terms such as first and second, such as "connecting board one, connecting board two", etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0020] The directional words mentioned in this embodiment, such as "up, down, left, right", etc., are only used in conjunction with the drawings to enable technicians in this technical field to understand the relationship between various features or parts.

[0021] In this embodiment, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0022] like Figures 1 to 5 As shown, a positioning mold for chain link assembly includes a placement block 1 for placing a chain link 2 and a support block 4 fixed on the upper side thereof for placing an external accessory 26. A rectangular side plate 3 is horizontally slidably provided on the left and right sides of the support block 4. The side plate 3 is used to clamp the external accessory 26 on the support block 4. A pin hole 5 is provided on the connection. A receiving groove 13 is provided on the placement block 1. A rectangular bottom plate 9 is provided on the receiving groove 13. Lifting members are relatively fixed on the left and right sides of the bottom plate 9. The lifting member includes a fixed part fixed to the bottom plate 9. The threaded cylinder 8 is fixedly connected, and the threaded cylinder 8 is placed vertically. A lifting rod 7 is screwed on it. A positioning rod 6 concentric with it is fixed on the upper end of the lifting rod 7. The upper end of the positioning rod 6 passes through the bottom plate 9 and is located above it. In this embodiment, the positioning rod 6 is plug-fitted with the pin hole 5, and an annular friction pad 18 is sleeved on the outer wall of the positioning rod 6. The outer diameter of the friction pad 18 is consistent with the inner diameter of the pin hole 5. The purpose is to increase the friction between the chain link 2 installed on the bottom plate 9 and the positioning rod 6, so that the placement is more stable.

[0023] A driving block 27 is relatively fixed on the left and right sides of the lower side of the bottom plate 9. In this embodiment, the driving block 27 is a rectangular parallelepiped at the upper end and an arc-shaped at the lower end. A rotating rod 19 is rotatably arranged on the upper end of the driving block 27. A rectangular guide groove 24 is opened on the left and right sides of the inner wall of the accommodating groove 13 along the width direction of the accommodating groove 13. The rotating rod 19 is slidably connected with the guide groove 24. A rack 22 is fixed on the inner wall of the lower end of the driving block 27. A knob 12 is arranged on the outer front side of the placement block 1. The front end of the knob 12 is located outside the placement block 1, and the rear end thereof is located in the accommodating groove 13. A worm wheel 14 is sleeved on the outer wall of one end thereof located in the accommodating groove 13. A worm 17 meshing with the worm wheel 14 is horizontally arranged in the accommodating groove 13. It should be noted that in this embodiment, a meshing mode in which the worm wheel 14 drives the worm 17 to rotate is adopted, and gears 10 meshing with the rack 22 are sleeved and fixed on each end of the worm 17. An L-shaped positioning block 20 is provided on the side away from each other at the upper ends of the two groups of driving blocks 27. One end of the positioning block 20 is sleeved on the outer wall of the rotating rod 19 and is rotatably connected with it, that is, it can push the rotating rod 19 to move in the guide groove 24, and at the same time prevent the rotating rod 19 from driving it to rotate when it rotates. An upward protrusion is provided on the upper end of the positioning block 20, the purpose of which is to facilitate personnel to drive the positioning block 20 to move. A fastening bolt 21 is provided on the upper end of the positioning block 20, and a plurality of groups of threaded holes 23 that can be screwed with the fastening bolts 21 are opened on the placement block 1 along its width direction. An L-shaped extension block 16 is fixed to the lower side of the positioning block 20, and an extension tube 25 is horizontally slidably provided at one end of the knob 12 located in the accommodating groove 13. One end of the extension block 16 is fixedly connected to the extension tube 25, and at the same time, a bracket 15 is relatively fixed on the extension block 16, and the left and right ends of the worm 17 are rotatably connected to the bracket 15.

[0024] A positioning bolt 11 is rotatably provided at the front end of the knob 12 , and its purpose is to limit the position of the knob 12 .

[0025] When Figure 1 As shown, when the chain link 2 and the external attachment 26 are placed in horizontal connection, the bottom plate 9 is arranged parallel to the upper side of the placement block 1 .

[0026] When the external attachment 26 and the fitting surface of the chain link 2 have a certain angle, the personnel can start to adjust, first loosen the positioning bolt 11, and then turn the knob 12, the knob 12 drives the worm wheel 14, the worm wheel 14 drives the worm 17 to rotate, the gears 10 at both ends of the worm 17 begin to engage with the rack 22 for transmission, the driving block 27 fixed to the rack 22 begins to rotate around the central axis of the rotating rod 19, the driving block 27 is fixed with the base plate 9 and begins to rotate, and the chain link 2 placed on the base plate 9 starts to rotate synchronously. It should be noted that since the chain link 2 is easy to interfere with the upper surface of the placement block 1 when it rotates, the personnel can set the upper side height of the placement block 1 to have a certain height difference with the chain link 2 according to actual conditions, so that when the base plate 9 rotates and drives the chain link 2 to change its angle, the placement block 1 will not be stuck.

[0027] When the upper side of the chain link 2 is parallel to the fitting surface of the external accessory 26 but there is a certain distance between them, the personnel can first adjust the height of the rotating positioning rod 6, then place the upper chain link 2, and finally place the external accessory 26 on it to fix the position. After confirming that the chain link 2 and the external accessory 26 are fitted together, turn the positioning bolt 11 to fix the position of the knob 12, and the personnel can start welding work.

[0028] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A positioning mold for chain link assembly, comprising a placement block (1) for placing a chain link (2) and a support block (4) arranged thereon for placing an external accessory (26), the support block (4) being provided with side plates (3) on both sides, the chain link (2) being provided with a pin hole (5), Features The placement block (1) is provided with a receiving groove (13), the receiving groove (13) is provided with a bottom plate (9), and the bottom plate (9) is provided with a lifting member; The lifting member comprises a threaded cylinder (8) connected to the bottom plate (9) and a lifting rod (7) threadedly connected thereto, and the lifting rod (7) is provided with a positioning rod (6) plug-fitted with the pin hole (5); A driving block (27) is arranged in the receiving groove (13), the bottom plate (9) is arranged on the driving block (27), the driving block (27) is connected to the inner wall of the receiving groove (13) through a rotating rod (19), one end of the driving block (27) is rotatably connected to the rotating rod (19), and the other end thereof is arranged in an arc shape; A rack (22) is arranged on one end of the driving block (27) away from the rotating rod (19); a knob (12) is arranged on the placement block (1); a driving member is arranged on one end of the knob (12); a gear (10) meshing with the rack (22) is arranged on one end of the driving member; when the driving member is driven, the gear (10) can be driven to mesh with the rack (22) for transmission, thereby causing the driving block (27) to rotate around the central axis of the rotating rod (19) by a certain angle.

2. A positioning mold for chain link assembly according to claim 1, characterized in that: The driving member comprises a worm wheel (14) sleeved on the outer wall of the knob (12) and a worm (17) located in the receiving groove (13) and drivingly matched with the worm wheel (14); the gear (10) is sleeved on the outer wall of the worm (17).

3. A positioning mold for chain link assembly according to claim 1, characterized in that: The outer wall of the positioning rod (6) is sleeved with a friction pad (18).

4. A positioning mold for chain link assembly according to claim 1, characterized in that: The knob (12) is located on one end outside the placement block (1) and is provided with a positioning bolt (11).

5. A positioning mold for chain link assembly according to claim 2, characterized in that: The inner wall of the receiving groove (13) is provided with a guide groove (24), the rotating rod (19) is slidably connected to the guide groove (24), a positioning block (20) is provided on the outer wall of the rotating rod (19), one end of the positioning block (20) is located outside the receiving groove (13), a threaded hole (23) is provided on the outer wall of the placement block (1), and a fastening bolt (21) threadedly matched with the threaded hole (23) is provided on the positioning block (20).

6. A positioning mold for chain link assembly according to claim 5, characterized in that: An extension tube (25) is slidably provided at one end of the knob (12) located in the receiving groove (13), the worm wheel (14) is sleeved on the extension tube (25), an extension block (16) is provided at one end of the positioning block (20) and is connected to the extension tube (25), and a bracket (15) is provided on the extension block (16) and is connected to the worm (17).

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