Pin stamping equipment
By designing pin stamping equipment, combined with the structure of conical clips, cutting grooves and stamping grooves, the cutting and stamping actions of pins are completed on the same equipment, solving the problem of low production efficiency and improving production efficiency.
Patent Information
- Application Number
- CN202422410272.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The cutting and forging process of pins are dispersed, resulting in low production efficiency, and the need for conveyor belts or manual transportation in the middle, affecting production efficiency.
A stamping equipment for a pin is designed. By setting a conical clip, a cutting groove and a stamping groove on the lower mold, a cutter and a stamping rod are provided on the upper mold, the downward slider of the stamping machine drives the movement of the upper mold, and the downward pressure is achieved to complete the cutting and stamping of the big head in one downward pressure, and the production efficiency is improved in combination with the wire feeding mechanism.
The cutting and stamping of the pin are achieved on the same equipment, which improves production efficiency, reduces intermediate transport steps, and improves production efficiency.
Smart Images
Figure CN223145709U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pin production, and more specifically, it relates to a stamping device for pins. Background Art
[0002] A pin is a household item used to fix objects. It gets its name because one end is larger and the other end is pointed and thin. A pin is made of metal and has a shape similar to an iron nail. The pointed end is used to pierce through objects, and the cross-sectional area of the large end is larger than that of the pin body, which can reduce the pressure on the contact surface when contacting the finger to avoid finger injury.
[0003] The manufacturing process of pins usually includes four processes: wire drawing, cutting, forging, and grinding. Wire drawing is to straighten the steel wire coil, then cut the straightened steel wire into a suitable designed length, then forge the large end through a die, and finally grind and process the pointed end.
[0004] Currently, the cutting and forging processes of pins are scattered and not processed on the same machine. Intermediate conveyor belts or manual transfer are required, which affects production efficiency. Summary of the Utility Model
[0005] The technical problem to be solved by the utility model is in view of the above deficiencies of the prior art. The purpose of the utility model is to provide a stamping device for pins that can improve production efficiency.
[0006] The technical solution of the utility model is: a stamping device for pins, including a stamping machine body. A top die body is provided at the bottom of the pressing slider of the stamping machine body, and a bottom die body is provided on the machine table of the stamping machine body; the bottom die body includes a base and an upper cover. The base and the upper cover are connected by locking bolts. Semi-circular grooves for passing steel wires are respectively provided on the mating surfaces of the base and the upper cover. A semi-conical hole is provided in the middle of the semi-circular groove of the upper cover. A conical clamping piece is provided in the semi-conical hole. A pressing groove for pressing the steel wire is provided at the bottom of the conical clamping piece. A first spring is provided between the small end of the conical clamping piece and the semi-conical hole. A cutting groove is provided on the base on one side of the large end of the conical clamping piece, and a cutter entry hole aligned with the cutting groove is provided on the upper cover on one side of the large end of the conical clamping piece. A first stamping groove is provided in the semi-circular grooves at one end of the base and the upper cover. A slide rail is provided on the base outside the first stamping groove. A stamping head aligned with the first stamping groove is slidably provided on the slide rail. A second spring is connected between one end of the stamping head and the base. A first wedge surface is provided at one end of the stamping head away from the first stamping groove. A stamping rod is provided at the bottom of the top die body. A second wedge surface adapted to the first wedge surface is provided on one side of the stamping rod. A cutter aligned with the cutter entry hole is provided at the bottom of the top die body. A third wedge surface is provided on one side of the cutter close to the conical clamping piece.
[0007] As a further improvement, a guiding hole is provided at the top of the upper cover. Correspondingly, a guiding rod aligned with the guiding hole is provided at the bottom of the upper die body.
[0008] Further, at one end of the punching head close to the first punching groove, a second punching groove aligned with the first punching groove is provided.
[0009] Further, both the first punching groove and the second punching groove are spherical grooves.
[0010] Further, a discharge groove is provided at the base below the first punching groove.
[0011] Further, a placement rack for placing coiled steel wires is provided on one side of the machine table away from the first punching groove. A straightening rack and a wire feeding mechanism are successively provided on the machine table between the placement rack and the lower die body.
[0012] Further, two rows of rollers for straightening the steel wire are provided at the top of the straightening rack and are arranged in a staggered manner.
[0013] Further, the wire feeding mechanism includes a double-acting cylinder. A single-acting cylinder is connected to the horizontal push rod of the double-acting cylinder. The single-acting cylinder is located between the straightening rack and the double-acting cylinder. The push rod of the single-acting cylinder extends vertically and is connected to a first clamping plate. The vertical push rod of the double-acting cylinder is connected to a second clamping plate. A guiding plate is provided on one side of the double-acting cylinder away from the straightening rack. A guiding groove is provided between the guiding plate and the double-acting cylinder. The steel wire passes through below the first clamping plate, below the second clamping plate, and through the guiding groove.
[0014] Further, a control switch for controlling the operation of the double-acting cylinder and the single-acting cylinder is provided on one side of the double-acting cylinder. A pressing frame for pressing the control switch is connected to one side of the downward pressing slider.
[0015] Advantageous Effects
[0016] Compared with the prior art, the present utility model has the following advantages:
[0017] In the present utility model, by providing a tapered clamping piece, a cutting groove, a first punching groove, and a punching head on the lower die body, and a cutting knife and a punching rod on the upper die body, during the process of the downward movement of the cutting knife and the punching rod on the upper die body driven by the downward pressing slider of the punching machine, the cutting knife cuts the steel wire at the cutting groove, the tapered clamping piece clamps the cut steel wire, and the punching rod drives the punching head to move towards the end of the steel wire and punches out a large head. The operations of punching the large head and cutting can be achieved by one downward pressing, improving the production efficiency. Description of the Drawings
[0018] Figure 1 is a structural schematic diagram of the present utility model;
[0019] Figure 2 It is a top view structural schematic diagram of the lower die body in the present utility model;
[0020] Figure 3 is Figure 2 a sectional view taken along line A-A in
[0021] Figure 4 is Figure 3 an enlarged view of position B in
[0022] Figure 5 It is a structural schematic diagram of the upper die body in the present utility model;
[0023] Figure 6 It is a front view structural schematic diagram of the straightening frame and wire feeding mechanism in the present utility model;
[0024] Figure 7 It is a top view structural schematic diagram of the straightening frame and wire feeding mechanism in the present utility model.
[0025] Wherein: 1 - stamping machine body, 2 - lower pressing slider, 3 - upper die body, 4 - machine table, 5 - lower die body, 6 - base, 7 - upper cover, 8 - locking bolt, 9 - steel wire, 10 - semi-circular groove, 11 - semi-conical hole, 12 - conical clamping piece, 13 - first spring, 14 - cutting groove, 15 - cutter inlet hole, 16 - first stamping groove, 17 - slide rail, 18 - stamping head, 19 - second spring, 20 - first wedge surface, 21 - stamping rod, 22 - second wedge surface, 23 - cutter, 24 - third wedge surface, 25 - guiding hole, 26 - guiding rod, 27 - second stamping groove, 28 - discharge groove, 29 - placing rack, 30 - straightening frame, 31 - wire feeding mechanism, 32 - roller, 33 - double-acting cylinder, 34 - single-acting cylinder, 35 - first clamping plate, 36 - second clamping plate, 37 - guiding plate, 38 - control switch, 39 - pressing frame, 40 - coiled steel wire, 41 - runner, 42 - mounting plate, 43 - pressing groove. Detailed implementation manners
[0026] The following further describes the present utility model with reference to specific embodiments in the accompanying drawings.
[0027] Refer to Figures 1 to 7, A stamping device for a drawing pin, comprising a stamping machine body 1. A top die body 3 is provided at the bottom of the pressing slider 2 of the stamping machine body 1, and a bottom die body 5 is provided on the machine table 4 of the stamping machine body 1. The bottom die body 5 includes a base 6 and an upper cover 7, and the base 6 and the upper cover 7 are connected by locking bolts 8. Semi-circular grooves 10 for passing a steel wire 9 are respectively provided on the mating surfaces of the base 6 and the upper cover 7, and the two semi-circular grooves 10 together form a circular hole. A semi-conical hole 11 is provided in the middle of the semi-circular groove 10 of the upper cover 7. A conical clamping piece 12 is provided in the semi-conical hole 11. A pressing groove 43 for pressing the steel wire 9 is provided at the bottom of the conical clamping piece 12. A first spring 13 is provided between the small end of the conical clamping piece 12 and the semi-conical hole 11. A cutting groove 14 is provided on the base 6 on one side of the large end of the conical clamping piece 12, and a cutter insertion hole 15 aligned with the cutting groove 14 is provided on the upper cover 7 on one side of the large end of the conical clamping piece 12. A first stamping groove 16 for stamping out the head of the drawing pin is provided in the semi-circular groove 10 at one end of the base 6 and the upper cover 7. A slide rail 17 is provided on the base 6 outside the first stamping groove 16. A stamping head 18 aligned with the first stamping groove 16 is slidably provided on the slide rail 17. A second spring 19 is connected between one end of the stamping head 18 and the base 6. A first wedge surface 20 is provided at the end of the stamping head 18 far from the first stamping groove 16. A stamping rod 21 is provided at the bottom of the top die body 3. A second wedge surface 22 adapted to the first wedge surface 20 is provided on one side of the stamping rod 21. A cutter 23 aligned with the cutter insertion hole 15 is provided at the bottom of the top die body 3. A third wedge surface 24 is provided on the side of the cutter 23 close to the conical clamping piece 12.
[0028] A guide hole 25 is provided at the top of the upper cover 7. Correspondingly, a guide rod 26 aligned with the guide hole 25 is provided at the bottom of the top die body 3. During operation, the guide rod 26 is slidably inserted into the guide hole 25 to improve the cutting accuracy of the cutter 23.
[0029] In one embodiment, a second stamping groove 27 aligned with the first stamping groove 16 is provided at one end of the stamping head 18 close to the first stamping groove 16. The head of the drawing pin is stamped out through the cooperation of the first stamping groove 16 and the second stamping groove 27.
[0030] Preferably, both the first stamping groove 16 and the second stamping groove 27 are spherical grooves.
[0031] A discharge groove 28 is provided on the base 6 below the first stamping groove 16. The stamped drawing pins are discharged from the discharge groove 28 into the runner 41 of the stamping machine body 1.
[0032] A placement rack 29 for placing a coiled steel wire 40 is provided on one side of the machine table 4 far from the first stamping groove 16. A straightening rack 30 and a wire feeding mechanism 31 are successively provided on the machine table 4 between the placement rack 29 and the bottom die body 5. Both the straightening rack 30 and the wire feeding mechanism 31 are installed on the machine table 4 through a mounting plate 42.
[0033] At the top of the straightening frame 30, there are two rows of rollers 32 arranged in a staggered manner for straightening the steel wire 9. In the middle of the outer wall of the roller 32, there is an annular groove adapted to the steel wire 9, and the steel wire 9 passes through the annular groove between the rollers 32.
[0034] The wire feeding mechanism 31 includes a double-acting cylinder 33. The double-acting cylinder 33 uses an existing mature product. The double-acting cylinder 33 has push rods in two independent horizontal and vertical directions. The horizontal push rod of the double-acting cylinder 33 is connected to a single-acting cylinder 34. The single-acting cylinder 34 is located between the straightening frame 30 and the double-acting cylinder 33. The push rod of the single-acting cylinder 34 extends vertically and is connected to a first clamping plate 35. The vertical push rod of the double-acting cylinder 33 is connected to a second clamping plate 36. On one side of the double-acting cylinder 33 away from the straightening frame 30, there is a guide plate 37. There is a guide groove between the guide plate 37 and the double-acting cylinder 33. The steel wire 9 passes under the first clamping plate 35, under the second clamping plate 36, and through the guide groove.
[0035] On one side of the double-acting cylinder 33, there is a control switch 38 for controlling the operation of the double-acting cylinder 33 and the single-acting cylinder 34. On one side of the pressing slider 2, there is a pressing frame 39 for pressing the control switch 38.
[0036] Working principle:
[0037] The pressing slider 2 of the press body 1 drives the upper die body 3 to move downward. The cutting knife 23 enters the cutting knife inlet hole 15, and the punching rod 21 moves downward. The third wedge surface 24 presses the tapered clamping piece 12, so that the tapered clamping piece 12 presses the steel wire 9 downward. The cutting knife 23 moves to the cutting groove 14 to cut off the steel wire 9. At the same time, the second wedge surface 22 of the punching rod 21 presses the first wedge surface 20 of the punching head 18, and the punching head 18 moves to the left to punch out the head of the pin. At this time, the pressing frame 39 presses the control switch 38, and the double-acting cylinder 33 and the single-acting cylinder 34 act simultaneously. The vertical push rod of the double-acting cylinder 33 retracts to clamp the steel wire 9 with the second clamping plate 36. The push rod of the single-acting cylinder 34 extends, and the horizontal push rod of the double-acting cylinder 33 extends. After the pressing slider 2 descends to the lowest point, it drives the upper die body 3 to move upward. The first spring 13 pushes the tapered clamping piece 12 to the left, and the second spring 19 pulls the punching head 18 to the right. The pressing frame 39 leaves the control switch 38. The vertical push rod of the double-acting cylinder 33 extends, and the push rod of the single-acting cylinder 34 retracts to clamp the steel wire 9 with the first clamping plate 35. The horizontal push rod of the double-acting cylinder 33 retracts to send the steel wire 9 forward by the length of a pin, and at the same time, the punched pin is ejected. The pin is discharged from the discharge groove 28 into the runner 41 of the press body 1. The reciprocating up and down movement of the pressing slider 2 of the press body 1 can achieve the actions of punching the head and cutting off in one downward press, improving the production efficiency.
[0038] The above is only the preferred embodiment of the present utility model. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several modifications and improvements can be made, which will not affect the implementation effect of the present utility model and the practicability of the patent.
Claims
1. A stamping device for a thumb tack, comprising a stamping machine body (1), characterized in that, The bottom of the downward slider (2) of the stamping machine body (1) is provided with an upper die body (3), and the machine table (4) of the stamping machine body (1) is provided with a lower die body (5); the lower die body (5) includes a base (6) and an upper cover (7), the base (6) and the upper cover (7) are connected by locking bolts (8), semi-circular grooves (10) for passing a steel wire (9) are respectively provided on the mating surfaces of the base (6) and the upper cover (7), a semi-cone hole (11) is provided in the middle of the semi-circular groove (10) of the upper cover (7), a tapered clamping piece (12) is arranged in the semi-cone hole (11), a pressing groove (43) for pressing the steel wire (9) is provided at the bottom of the tapered clamping piece (12), a first spring (13) is arranged between the small end of the tapered clamping piece (12) and the semi-cone hole (11), a cutting groove (14) is provided on the base (6) on one side of the large end of the tapered clamping piece (12), a cutter insertion hole (15) aligned with the cutting groove (14) is provided on the upper cover (7) on one side of the large end of the tapered clamping piece (12), a first stamping groove (16) is provided in the semi-circular groove (10) at one end of the base (6) and the upper cover (7), a slide rail (17) is provided on the base (6) outside the first stamping groove (16), a stamping head (18) aligned with the first stamping groove (16) is slidably arranged on the slide rail (17), a second spring (19) is connected between one end of the stamping head (18) and the base (6), a first wedge surface (20) is provided at the end of the stamping head (18) away from the first stamping groove (16), a stamping rod (21) is provided at the bottom of the upper die body (3), a second wedge surface (22) adapted to the first wedge surface (20) is provided on one side of the stamping rod (21), a cutter (23) aligned with the cutter insertion hole (15) is provided at the bottom of the upper die body (3), and a third wedge surface (24) is provided on the side of the cutter (23) close to the tapered clamping piece (12).
2. The stamping device for a drawing pin according to claim 1, characterized in that, A guide hole (25) is provided at the top of the upper cover (7), and correspondingly, a guide rod (26) aligned with the guide hole (25) is provided at the bottom of the upper die body (3).
3. The stamping device for a thumb tack according to claim 1, characterized in that, A second stamping groove (27) aligned with the first stamping groove (16) is provided at the end of the stamping head (18) close to the first stamping groove (16).
4. The stamping device for a thumb tack according to claim 3, characterized in that, Both the first stamping groove (16) and the second stamping groove (27) are spherical grooves.
5. The stamping device for a thumb tack according to claim 1, characterized in that, A discharge groove (28) is provided on the base (6) below the first stamping groove (16).
6. A stamping device for a thumb tack according to any one of claims 1-5, characterized in that, A placement rack (29) for placing a coiled steel wire (40) is provided on one side of the machine table (4) away from the first stamping groove (16), and a straightening rack (30) and a wire feeding mechanism (31) are sequentially provided on the machine table (4) between the placement rack (29) and the lower die body (5).
7. The stamping device for a thumb tack according to claim 6, characterized in that, Two rows of rollers (32) arranged in a staggered manner for straightening the steel wire (9) are provided at the top of the straightening rack (30).
8. The stamping device for a thumb tack according to claim 6, characterized in that, The wire feeding mechanism (31) includes a double-acting cylinder (33). The horizontal push rod of the double-acting cylinder (33) is connected with a single-acting cylinder (34). The single-acting cylinder (34) is located between the straightening frame (30) and the double-acting cylinder (33). The push rod of the single-acting cylinder (34) extends vertically and is connected with a first clamping plate (35). The vertical push rod of the double-acting cylinder (33) is connected with a second clamping plate (36). A guide plate (37) is arranged on one side of the double-acting cylinder (33) away from the straightening frame (30). A guide groove is arranged between the guide plate (37) and the double-acting cylinder (33). The steel wire (9) passes through below the first clamping plate (35), below the second clamping plate (36), and through the guide groove.
9. The stamping device for a thumb tack according to claim 8, wherein, A control switch (38) for controlling the operation of the double-acting cylinder (33) and the single-acting cylinder (34) is arranged on one side of the double-acting cylinder (33). A pressing frame (39) for pressing the control switch (38) is connected to one side of the downward pressing slider (2).