Die for riveting fastener cold header

Abstract

The utility model provides a mould for a pull riveting fastener cold header, which comprises a mounting plate and a lifting hook claw mounted on a cold heading head, a processing sleeve is fixedly connected in the mounting plate, a cold heading groove and a demoulding groove are arranged in the processing sleeve, demoulding rods are slidably connected in the demoulding groove, one end of each demoulding rod is fixedly connected with a hook claw bottom plate, and the other end of each demoulding rod is fixedly connected with a lifting hook claw. One end of the hook claw bottom plate is fixedly connected with a lifting hook claw, the hook claw bottom plate and the lower end of the processing sleeve are fixedly connected with springs, one side of the mounting plate is fixedly connected with a side bracket, one end of the side bracket is rotatably connected with a plurality of extrusion rollers, and one side of the mounting plate is in threaded connection with a positioning bolt; different machining sleeves can be rapidly replaced according to different types of machined parts, when the cold heading head moves downwards for cold heading, the lifting hook claw on one side can extrude and hook the lifting hook claw on one side, and the lifting hook claw can be driven to move upwards in the subsequent reset process of the cold heading head; and then the demolding rod in the cold heading groove is driven to move upwards to extrude an internal workpiece to realize rapid demolding.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading processing, and particularly relates to a die for a cold heading machine of a riveting fastener. Background Art

[0002] Cold heading is a metal pressure processing technology and belongs to one of the metal processing methods with less or no cutting. It is mainly applied to the production of standard fasteners such as bolts, screws, nuts, rivets, and pins. The basic principle of the cold heading process is that at normal temperature, external force acts on the metal to cause plastic deformation in a predetermined die, so as to realize the redistribution and transfer of the metal volume, and finally form the required parts or blanks. This process not only improves the material utilization rate but also reduces the production cost because of reducing cutting processing, and is especially suitable for mass production environments;

[0003] When processing riveting fasteners such as riveting bolts, a cold heading machine is commonly used in cooperation with a die for processing. However, the existing technology has the problems of lacking the function of assisting in demolding and being inconvenient to replace the inner grooves of different sizes and shapes for processing different types of workpieces;

[0004] Therefore, a die for a cold heading machine of a riveting fastener is proposed. Summary of the Utility Model

[0005] In view of this, the embodiments of the present utility model hope to provide a die for a cold heading machine of a riveting fastener to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0006] The technical solution of the embodiments of the present utility model is realized as follows: It includes a mounting plate and a lifting hook claw installed on the cold heading head. A processing sleeve is fixedly connected inside the mounting plate. A cold heading groove and a demolding groove are opened inside the processing sleeve. A demolding rod is slidably connected inside the demolding groove. One ends of a plurality of demolding rods are fixedly connected to a hook claw bottom plate, and one end of the hook claw bottom plate is fixedly connected to a lifting hook claw.

[0007] In some embodiments, springs are fixedly connected between the hook claw bottom plate and the lower end of the processing sleeve.

[0008] In some embodiments, a side bracket is fixedly connected to one side of the mounting plate, and a plurality of pressing rollers are rotatably connected to one end of the side bracket.

[0009] In some embodiments, a positioning bolt is threadedly connected to one side of the mounting plate.

[0010] In some embodiments, a limiting boss is fixedly connected to one side of the processing sleeve, and a lifting boss is fixedly connected above the limiting boss.

[0011] In some embodiments, a plurality of limiting grooves are opened at one ends of the mounting plate and the limiting boss, and inserting rods are fixedly connected inside the limiting grooves.

[0012] In some embodiments, one end of each of the plurality of inserting rods is fixedly connected to a fastening plate, one end of the fastening plate is threadedly connected to a screw rod, and one end of the screw rod is rotatably connected to the mounting plate.

[0013] In some embodiments, a synchronous pulley is fixedly connected to one side of the screw rod, and the plurality of synchronous pulleys are drivingly connected by a synchronous belt.

[0014] Due to the adoption of the above technical solutions in the embodiments of the present utility model, it has the following advantages:

[0015] 1. A die for a cold heading machine of a riveting fastener. By quickly replacing different processing sleeves according to different models of workpieces to be processed, when the cold heading head moves downward for cold heading, the lifting hook on one side will squeeze and hook the lifting hook on the other side. During the subsequent reset process of the cold heading head, the lifting hook will be driven to move upward, and then the demolding rod in the cold heading groove will be driven to move upward to extrude the workpiece inside to achieve rapid demolding.

[0016] 2. A die for a cold heading machine of a riveting fastener. When the lifting hook moves to a certain height, it will be squeezed by the roller, causing the lifting hook to deflect to one side and disengage from the lifting hook. Under the action of the spring, the demolding rod will fall back without affecting the continued upward movement of the cold heading head.

[0017] 3. A die for a cold heading machine of a riveting fastener. By inserting the inserting rod into the limiting groove, the processing sleeve can be fixed to prevent the processing sleeve from moving upward during demolding.

[0018] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the above-described illustrative aspects, embodiments and features, further aspects, embodiments and features of the present utility model will be readily apparent by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is the front view structure diagram of the present utility model;

[0021] Figure 2 It is the side view structure diagram of the present utility model;

[0022] Figure 3 It is the structure diagram of the cold heading groove of the present utility model;

[0023] Figure 4 This is the exploded view of the utility model.

[0024] Figure 5 This is the internal sectional view of the utility model.

[0025] Reference numerals:

[0026] 1. mounting plate; 2. positioning bolt; 3. machining sleeve; 4. side bracket; 5. extrusion roller; 6. lifting boss; 7. lifting hook; 8. fastening plate; 9. inserting rod; 10. screw rod; 11. synchronous pulley; 12. synchronous belt; 13. cold heading groove; 14. demoulding rod; 15. limiting boss; 16. limiting groove; 17. lifting hook; 18. hook bottom plate; 19. spring; 20. demoulding groove. Detailed implementation manners

[0027] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0028] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0029] Embodiment 1:

[0030] As Figures 1-5 shown, a die for a cold heading machine of riveting fasteners includes a mounting plate 1 and a lifting hook 7 mounted on the cold heading head. A machining sleeve 3 is fixedly connected inside the mounting plate 1. A cold heading groove 13 and a demoulding groove 20 are formed inside the machining sleeve 3. A demoulding rod 14 is slidably connected inside the demoulding groove 20. One ends of a plurality of demoulding rods 14 are fixedly connected to a hook bottom plate 18, and one end of the hook bottom plate 18 is fixedly connected to a lifting hook 17.

[0031] During processing, first install the machining sleeve 3 into the corresponding groove inside the mounting plate 1. The cold heading groove 13 can quickly replace different machining sleeves 3 according to different models of workpieces. When the cold heading head moves downward for cold heading, the lifting hook 7 on one side will squeeze and hook the lifting hook 17 on one side. During the subsequent reset process of the cold heading head, it will drive the lifting hook 17 to move upward, and then drive the demoulding rod 14 inside the cold heading groove 13 to move upward to extrude the workpiece inside to achieve rapid demoulding.

[0032] In this embodiment, springs 19 are fixedly connected to the hook bottom plate 18 and the lower end of the machining sleeve 3. A side bracket 4 is fixedly connected to one side of the mounting plate 1, and a plurality of extrusion rollers 5 are rotatably connected to one end of the side bracket 4.

[0033] When the lifting claw 17 moves to a certain height, it will be pressed by the pressing roller 5, causing the lifting claw 17 to deflect to one side and disengage from the lifting claw 7. Under the action of the spring 19, the demolding rod 14 will fall back without affecting the continued upward movement of the cold heading die.

[0034] In this embodiment, a positioning bolt 2 is threadedly connected to one side of the mounting plate 1, and the positioning bolt 2 can fix the mounting plate 1 on the cold heading machine.

[0035] In this embodiment, a limiting boss 15 is fixedly connected to one side of the processing sleeve 3, and a lifting boss 6 is fixedly connected above the limiting boss 15; the lifting boss 6 can facilitate the taking and placing of the processing sleeve 3.

[0036] A plurality of limiting grooves 16 are formed at one ends of the mounting plate 1 and the limiting boss 15, and inserting rods 9 are fixedly connected inside the limiting grooves 16.

[0037] When the inserting rod 9 is inserted into the limiting groove 16, the processing sleeve 3 can be fixed to prevent the processing sleeve 3 from moving upward during demolding.

[0038] In this embodiment: During processing, first install the processing sleeve 3 into the corresponding groove in the mounting plate 1. The cold heading groove 13 can quickly replace different processing sleeves 3 according to different processing part models. When the cold heading die moves downward for cold heading, the lifting claw 7 on one side will press and hook the lifting claw 17 on one side. During the subsequent reset process of the cold heading die, the lifting claw 17 will be driven to move upward, thereby driving the demolding rod 14 in the cold heading groove 13 to move upward to extrude the workpiece inside to achieve rapid demolding.

[0039] When the lifting claw 17 moves to a certain height, it will be pressed by the pressing roller 5, causing the lifting claw 17 to deflect to one side and disengage from the lifting claw 7. Under the action of the spring 19, the demolding rod 14 will fall back without affecting the continued upward movement of the cold heading die. The positioning bolt 2 can fix the mounting plate 1 on the cold heading machine. The lifting boss 6 can facilitate the taking and placing of the processing sleeve 3. When the inserting rod 9 is inserted into the limiting groove 16, the processing sleeve 3 can be fixed to prevent the processing sleeve 3 from moving upward during demolding.

[0040] Embodiment 2:

[0041] A die for a riveting fastener cold heading machine. In this embodiment, the following improvements are made on the basis of Embodiment 1, as Figures 1-5 shown,

[0042] In this embodiment, one ends of a plurality of the inserting rods 9 are fixedly connected with a fastening plate 8, one end of the fastening plate 8 is threadedly connected with a screw rod 10, and one end of the screw rod 10 is rotatably connected to the mounting plate 1.

[0043] The fastening plate 8 can move back and forth when the screw rod 10 is rotated to realize the telescoping of the inserting rod 9, facilitating the fixing and releasing of the processing sleeve 3.

[0044] A synchronous wheel 11 is fixedly connected to one side of the screw rod 10. The multiple synchronous wheels 11 are connected through a synchronous belt 12. The synchronous wheel 11 can realize the simultaneous extension and retraction of multiple insertion rods 9 through the synchronous belt 12, which is convenient for disassembling and assembling multiple processing sleeves 3 at the same time.

[0045] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A die for a cold heading machine of a riveting fastener, characterized in that: It includes a mounting plate (1) and a lifting claw (7) mounted on a cold heading machine. A processing sleeve (3) is fixedly connected inside the mounting plate (1). A cold heading groove (13) and a demolding groove (20) are formed inside the processing sleeve (3). A demolding rod (14) is slidably connected inside the demolding groove (20). One end of a plurality of demolding rods (14) is fixedly connected to a claw bottom plate (18). One end of the claw bottom plate (18) is fixedly connected to a lifting claw (17).

2. The die for a cold heading machine of a riveting fastener according to claim 1, characterized in that: A spring (19) is fixedly connected to the lower ends of the claw bottom plate (18) and the processing sleeve (3).

3. The die for a cold heading machine of a riveting fastener according to claim 2, characterized in that: A side bracket (4) is fixedly connected to one side of the mounting plate (1). One end of the side bracket (4) is rotatably connected to a plurality of pressing rollers (5).

4. The die for a cold heading machine of a riveting fastener according to claim 3, characterized in that: A positioning bolt (2) is threadedly connected to one side of the mounting plate (1).

5. A die for a cold heading machine of a riveting fastener according to claim 1, characterized in that: A limiting boss (15) is fixedly connected to one side of the processing sleeve (3). A lifting boss (6) is fixedly connected above the limiting boss (15).

6. The die for a cold heading machine of a riveting fastener according to claim 5, characterized in that: A plurality of limiting grooves (16) are formed at one ends of the mounting plate (1) and the limiting boss (15). A plug rod (9) is fixedly connected inside the limiting grooves (16).

7. A die for a cold heading machine of a riveting fastener, according to claim 6, characterized in that: One end of a plurality of the plug rods (9) is fixedly connected to a fastening plate (8). One end of the fastening plate (8) is threadedly connected to a screw rod (10). One end of the screw rod (10) is rotatably connected to the mounting plate (1).

8. A die for a cold heading machine of a riveting fastener, according to claim 7, characterized in that: A synchronous pulley (11) is fixedly connected to one side of the screw rod (10). The synchronous pulleys (11) are drivingly connected by a synchronous belt (12) among them.

Images