Cold heading mechanism for manufacturing mushroom head element

Abstract

The utility model provides a cold heading mechanism for manufacturing mushroom head elements, which comprises a rack, a longitudinal forming die arranged on the rack, a first pushing rod arranged on one side of the forming die and capable of longitudinally reciprocating, a base arranged on the other side of the forming die and capable of longitudinally reciprocating, and a machine base arranged on the base and capable of vertically reciprocating. A pre-punching head and a forming punching head are vertically arranged on the side, close to the forming die, of the machine base, the pre-punching head punches a blank into the forming die, and the forming punching head punches the exposed end of the blank into a mushroom head shape. According to the utility model, the pre-stamping head and the forming stamping head are matched, and two-time stamping forming is carried out at the same forming die, so that the condition of cracks or stress concentration is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading equipment, in particular to a cold heading mechanism for preparing mushroom head elements. Background Art

[0002] When existing cold heading machines prepare mushroom head components such as rivets, there are multiple cold heading forming modes. If multi-stage stamping is used, the blank needs to be transferred between multiple stations, and the stamping time is long; if one-time stamping is used, the feeding mechanism needs to first send the blank to the forming mold for positioning before stamping can be performed. Moreover, if stamping is performed in one time, the finished product is prone to cracks or stress concentration, which affects the quality of the product. Utility Model Content

[0003] The utility model provides a cold heading mechanism for preparing mushroom head components. Through the cooperation of a pre-punching head and a forming punching head, two punching processes are performed at the same forming die, thereby reducing cracks or stress concentration.

[0004] The technical solution of the present utility model is achieved as follows: a cold heading mechanism for preparing mushroom head elements includes a frame, a longitudinal forming mold is provided on the frame, a first pusher rod for longitudinal reciprocating motion is provided on one side of the forming mold, a base for longitudinal reciprocating motion is provided on the other side, a machine base for vertical reciprocating motion is provided on the base, a pre-punching head and a forming punching head are vertically provided on one side of the machine base close to the forming mold, the pre-punching head punches the blank into the forming mold, and the forming punching head punches the exposed end of the blank into the shape of a mushroom head.

[0005] Furthermore, a feed trough is provided on the frame, which is located on the feed side of the forming mold. A loading hole and a pushing hole are provided in the feed trough. The pushing hole is located on the side of the loading hole close to the feeding mold. A circular cutter is provided in the feed trough, and the circular cutter moves back and forth horizontally between the loading hole and the pushing hole.

[0006] Furthermore, it also includes a fixed-length component, which is located on the side of the circular cutter away from the feeding hole. The fixed-length component includes a swing-arm type proximity switch arranged on the frame. The swing arm of the swing-arm type proximity switch is arranged longitudinally, and a reset spring is arranged between the swing arm and the frame. The swing arm corresponds to the feeding hole.

[0007] Furthermore, a pneumatic gripper is provided on the frame, which is located on the side of the circular cutter away from the push hole. The pneumatic gripper moves back and forth horizontally between the push hole and the forming mold, and a second push rod is provided in the push hole for longitudinal reciprocating motion.

[0008] Beneficial effects of the utility model:

[0009] The cold heading mechanism of the utility model includes a pre-punching head and a forming punching head. The pre-punching head first punches the blank into the forming die for pre-forming, and at the same time partially embeds the blank into the forming die, so that the pneumatic clamp can release the blank and return. Then the machine base moves upward and the forming punching head is used to punch again to punch the pre-formed blank into a mushroom head. With the above-mentioned structure, there is no need to set up another mechanism for sending the blank into the forming die. At the same time, two punchings are performed in the same forming die, which can also reduce cracks or stress concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 Schematic diagram of the structure of the forming mold;

[0012] Figure 2 It is a structural diagram of the machine base;

[0013] Figure 3 Schematic diagram of the structure of the driving arm;

[0014] Figure 4 It is a structural diagram of a fixed-length component;

[0015] Figure 5 Schematic diagram of the structure of the mushroom head component.

[0016] Frame 1, feed trough 2, forming mold 3, base 4, machine base 5, pre-punching head 6, forming punching head 7, first push rod 8, loading hole 9, pushing hole 10, circular cutter 11, pneumatic clamp 12, feed rod 13, driving arm 14, swing cylinder 15, connecting seat 16, longitudinal screw 17, first travel switch 18, swing arm 19, return spring 20, second push rod 21. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The horizontal and vertical position terms of this utility model are relative to Figure 1The positional relationship shown.

[0019] like Figure 1 and 2 As shown, a cold heading mechanism for preparing mushroom head components includes a frame 1, on which a feed trough 2 and a forming mold 3 are sequentially arranged in the horizontal direction. The forming mold 3 is fixedly connected to the frame 1, and a longitudinal forming hole is arranged in the forming mold 3. A base 4 is provided on one side of the forming mold 3, and the base 4 is connected to a longitudinal linear drive module, driving the base 4 to perform longitudinal reciprocating motion. A vertically sliding machine base 5 is provided at the upper end of the base 4, and the machine base 5 is connected to a vertical linear drive module, driving the machine base 5 to perform vertical reciprocating motion. A pre-punching head 6 and a forming punch head 7 are vertically fixed on one side of the machine base 5 close to the forming mold 3, and the forming punch head 7 is located directly below the pre-punching head 6. The pre-punching head 6 punches the blank into the forming mold 3, and the forming punch head 7 punches the exposed end of the blank into the shape of a mushroom head, as shown in FIG. Figure 5 As shown. A sliding first pusher rod 8 is provided on the other side of the forming die 3. This pusher rod 8 is connected to a longitudinal linear drive mechanism, causing the pusher rod to reciprocate along the longitudinal direction of the forming hole, ejecting the stamped mushroom head component from the forming hole. The linear drive module is an existing structure and can be a telescopic hydraulic cylinder, a telescopic pneumatic cylinder, or a connecting rod linear drive.

[0020] like Figure 1 As shown, a longitudinal loading hole 9 and a pushing hole 10 are provided in the feed trough 2, and a cutting tool that moves horizontally back and forth is provided between the loading hole 9 and the pushing hole 10. A circular cutter 11 is fixed on the cutting tool, and the cutting tool is connected to a horizontal linear drive mechanism, thereby driving the circular cutter 11 to move horizontally back and forth.

[0021] like Figure 1 and 3 As shown, a pneumatic gripper 12 with horizontal reciprocating motion is provided between the push hole 10 and the forming mold 3. The pneumatic gripper 12 is located on the side of the circular cutter 11 away from the push hole 10. The pneumatic gripper 12 is vertically installed on the feed rod 13, and the feed rod 13 slides horizontally along the frame 1. A driving arm 14 is also provided on the frame 1. One end of the driving arm 14 is connected to the swing cylinder 15, and the other end is provided with a strip hole. The strip hole is hinged to the feed rod 13, and the feed rod 13 is driven to reciprocate horizontally by the swing cylinder 15 and the driving arm 14. Horizontal telescopic guide rods are connected between the two sides of the feed rod 13 and the frame 1 to ensure that the feed rod 13 moves horizontally in a straight line.

[0022] like Figure 4As shown, the frame 1 is also provided with a fixed-length assembly, which is located on the side of the circular cutter 11 away from the feeding hole 9. The fixed-length assembly includes a connecting seat 16, which is connected to the frame 1 via a longitudinal screw 17. One end of the longitudinal screw 17 is fixedly connected to the frame 1, and the other end slides through the connecting seat 16. Locking nuts are screwed onto the longitudinal screws 17 on both sides of the connecting seat 16. By loosening the nuts, the position of the connecting seat 16 can be adjusted longitudinally. A first travel switch 18 is fixed to the connecting seat 16. The first travel switch 18 is a swing-arm type travel switch. The swing arm 19 of the first travel switch 18 is arranged longitudinally and opposite the feeding hole 9. The frame 1 and the swing arm 19 are connected by a return spring 20. The wire passes longitudinally through the feeding hole 9 and the circular cutter 11 and contacts the swing arm 19. The cutting tool moves horizontally to cut the wire to obtain the blank. The swing arm 19 swings and the first stroke switch 18 senses that the blank moves toward the pushing hole 10. After the blank leaves the swing arm 19, the swing arm 19 is reset under the action of the reset spring 20.

[0023] A sliding second pusher rod 21 is provided in the pusher hole 10. The second pusher rod 21 is connected to the longitudinal linear drive module. When the circular cutter 11 drives the blank to move to the pusher hole 10, the pneumatic clamp 12 clamps the blank, and the pusher rod moves longitudinally out of the pusher hole 10 and pushes the blank away from the circular cutter 11.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cold heading mechanism for producing mushroom head components, comprising a frame on which a longitudinal forming die is provided, characterized in that: A first push rod with longitudinal reciprocating motion is provided on one side of the forming mold, and a base with longitudinal reciprocating motion is provided on the other side. A machine base with vertical reciprocating motion is provided on the base. A pre-punching head and a forming punching head are vertically provided on the side of the machine base close to the forming mold. The pre-punching head punches the blank into the forming mold, and the forming punching head punches the exposed end of the blank into a mushroom head shape.

2. A cold heading mechanism for preparing mushroom head components according to claim 1, characterized in that: A feed trough is also provided on the frame, which is located on the feed side of the forming mold. A loading hole and a pushing hole are provided in the feed trough. The pushing hole is located on the side of the loading hole close to the feeding mold. A circular cutter is provided in the feed trough, and the circular cutter moves back and forth horizontally between the loading hole and the pushing hole.

3. A cold heading mechanism for preparing mushroom head components according to claim 2, characterized in that: It also includes a fixed-length component, which is located on the side of the circular cutter away from the feeding hole. The fixed-length component includes a swing-arm proximity switch arranged on the frame. The swing arm of the swing-arm proximity switch is arranged longitudinally. A reset spring is arranged between the swing arm and the frame, and the swing arm corresponds to the feeding hole.

4. A cold heading mechanism for producing mushroom head components according to claim 2 or 3, characterized in that: The frame is also provided with a pneumatic gripper, which is located on the side of the circular cutter away from the push hole. The pneumatic gripper moves back and forth horizontally between the push hole and the forming mold. A second push rod is provided in the push hole for longitudinal reciprocating motion.

Images