Pin forming apparatus

Abstract

The application relates to the technical field of forming machines, and a Pin needle forming device, which comprises a base, a forming mechanism is arranged at the center of the base, a discharging mandrel is arranged at the center of the forming mechanism along the thickness direction of the base, a plurality of forming rods are arranged in a circumferential array around the forming mechanism, the forming rods are driven by a driving mechanism; the forming mechanism, a wire is guided into the forming mechanism through a guide slot body at the feeding end of the forming mechanism, the other end of the guide slot body is connected with a feeding mechanism, the forming mechanism comprises a bottom plate and a cover plate, a cavity is arranged at the center of the bottom plate, a forming block for forming the wire is arranged in the cavity, a forming rod for driving the forming block to move is arranged at the outer side of the forming block, the forming rod is slidingly arranged in a sliding groove around the cavity, and a cutting knife is further arranged on the forming block close to the feeding end of the forming mechanism. The application integrates the functions of feeding, cutting, multi-station forming, precise discharging and the like, reduces the production cost, and realizes high-precision forming of Pin needles.

Description

Technical Field

[0001] This application relates to the field of molding machine technology, and in particular to a pin forming device. Background Technology

[0002] In the field of electronic component manufacturing, pins are key components for achieving circuit connections. Their structural precision, molding consistency, and production efficiency directly affect the assembly quality and production progress of downstream products. Currently, most mainstream pin forming equipment on the market suffers from complex structural designs and fragmented forming processes. On the one hand, existing equipment often requires multiple independent drive mechanisms to complete wire feeding, cutting, and multi-station forming processes, resulting in a large overall size and footprint. Furthermore, poor coordination between mechanisms can lead to forming errors, especially for pins with protruding structures or specific cross-sections, making it difficult to guarantee the dimensional accuracy of the protrusions and overall perpendicularity, resulting in a low pass rate. On the other hand, traditional equipment often uses fixed installation or unidirectional sliding designs for the forming blocks, making it impossible to flexibly adjust the forming chamber size according to pin specifications. Changing product models requires disassembling and replacing a large number of parts, leading to long debugging cycles, poor adaptability, and difficulty in meeting the diverse, small-batch production needs of the electronics industry. Meanwhile, some equipment lacks a precise guiding structure in its discharge mechanism, leading to jamming or misalignment of the formed pins, further affecting production continuity. Furthermore, the drive mechanism often uses cylinders or ordinary cam drives, which suffer from insufficient motion stability and large return gaps, resulting in low precision of the forming rod and hindering efficient, high-precision pin forming. In addition, existing equipment often suffers from uneven wire cut ends and residual material after cutting due to poor coordination between the cutting blade and the wire guide structure, requiring additional grinding and increasing production steps and costs. Therefore, there is an urgent need for a compact, high-precision, highly adaptable pin forming machine that integrates feeding, cutting, multi-station forming, and precise discharge. Utility Model Content

[0003] In order to overcome the problems existing in the prior art, this application provides a pin forming device.

[0004] The pin forming device provided in this application adopts the following technical solution: A pin forming device includes a base, a forming mechanism installed at the center of the base, a discharge mandrel installed at the center of the forming mechanism along the thickness direction of the base, and a plurality of forming rods arranged circumferentially around the forming mechanism, wherein the forming rods are driven by a drive mechanism; the forming mechanism has a feeding end that guides wire through a guide groove, the other end of the guide groove being connected to a feeding mechanism; the forming mechanism includes a base plate and a cover plate, wherein the base plate has a cavity at its center, and a forming block for forming the wire is provided in the cavity; forming rods that drive the forming block to move are provided on the outside of the forming block, and the forming rods are slidably installed in grooves around the cavity; wherein a cutting blade is also installed on the forming block near the feeding end of the forming mechanism.

[0005] Furthermore, the molding block includes a first block, a second block, a third block, and a fourth block distributed clockwise within the cavity. The first and second blocks have lower blocks mounted at their bottoms, and the third and fourth blocks have upper blocks mounted at their tops. Both the top of the lower blocks and the bottom of the upper blocks have protrusions. The first and second blocks are slidably mounted on either side of the protrusions on the top of the lower blocks, and the third and fourth blocks are slidably mounted on either side of the protrusions on the bottom of the upper blocks. A first sliding rod is provided between the first and second blocks, and between the third and fourth blocks, through the protrusions. A second sliding rod is provided between the first and fourth blocks, and between the second and third blocks. Both ends of the first and second sliding rods are slidably mounted within the molding block. The forming rod includes a first rod, a second rod, a third rod, and a fourth rod arranged circumferentially on a base in a clockwise direction. The second and fourth rods are fixedly connected to the lower and upper blocks, respectively. The output end of the first rod contacts the side of the first and fourth blocks, and the output end of the third rod contacts the side of the second and third blocks. Grooves for accommodating wires are provided between the first and fourth blocks, and between the protrusions of the lower and upper blocks. Forming grooves for pin protrusions are provided between the second and third blocks and their opposite surfaces to the first and fourth blocks. A cutting blade is installed at the bottom of the fourth block, with the cutting blade corresponding to the groove. A wire groove is provided on the side of the cutting blade facing the feed inlet of the forming mechanism. A cutting groove corresponding to the cutting blade is provided on the top of the first block.

[0006] Furthermore, the output end of the discharge mandrel is provided with a V-groove, and the discharge mandrel is driven by a power mechanism on the back of the base.

[0007] Furthermore, the driving mechanism includes a base plate and a sliding plate slidably mounted on the base plate, wherein the output end of the sliding plate acts on the molding block, and a conjugate cam is rotatably mounted on the base plate, wherein the conjugate cam is driven by the central shaft of the planetary gear in the base, and the outer side of the central shaft passes through the strip-shaped perforation on the sliding plate, wherein the portion of the central shaft located outside the strip-shaped perforation is provided with a limiting retaining ring, and the sliding plate is provided with a first action block and a second action block on both sides of the conjugate cam, and the conjugate cam cooperates with the first action block and the second action block to control the movement of the sliding plate on the base plate.

[0008] In summary, this application includes at least one of the following beneficial technical effects: 1. This application integrates functions such as feeding, cutting, multi-station forming, and precise discharge into one compact structure, reducing the overall size and floor space of the equipment. The V-groove design at the output end of the discharge mandrel provides precise guidance for the formed pin, preventing jamming or deviation and ensuring the continuity of production. 2. The molding block design in the molding mechanism of this application can flexibly adjust the size of the molding chamber. Through the cooperation of the first slide bar and the second slide bar, and the driving of the molding block by the molding rod, it can be adaptively adjusted according to the pin specifications. It has strong adaptability and does not require disassembling a large number of parts when changing product models, thus shortening the debugging cycle. 3. The drive mechanism in this application adopts conjugate cam transmission, which has higher motion stability and smaller backlash compared with traditional cylinder or ordinary cam transmission, thus ensuring the action accuracy of the forming rod and realizing high-precision forming of the pin. 4. The precise fit between the cutting blade and the groove and cutting slot in this application, as well as the setting of the wire groove, can avoid problems such as uneven wire cutting end face and material residue, reduce subsequent grinding processes, and lower production costs. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of the pin forming equipment; Figure 2 yes Figure 1 Enlarged view of the forming mechanism; Figure 3 This is the front view of the pin forming equipment; Figure 4 yes Figure 3 Enlarged view of the forming mechanism; Figure 5 This is an exploded view of the cover plate and base plate of the forming mechanism in a pin forming device; Figure 6 yes Figure 4 Enlarged view of the forming mechanism; Figure 7 This is a schematic diagram of the pin structure.

[0010] Explanation of reference numerals in the attached drawings: 1. Base; 11. Discharge mandrel; 111. V-groove; 12. Guide trough; 2. Forming mechanism; 21. Base plate; 211. Cavity; 212. Slide groove; 22. Cover plate; 3. Forming block; 31. First block; 32. Second block; 33. Third block; 34. Fourth block; 35. Lower block; 36. Upper block; 37. Protrusion; 38. First slide rod; 39. ... 4. Forming rod; 41. First rod body; 42. Second rod body; 43. Third rod body; 44. Fourth rod body; 5. Drive mechanism; 51. Base plate; 52. Sliding plate; 521. Strip-shaped perforation; 522. First action block; 523. Second action block; 53. Conjugate cam; 531. Central shaft; 532. Limiting retaining ring; 6. Cutting blade; 61. Wire groove; 7. Groove; 8. Forming groove. Detailed Implementation

[0011] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0012] This application discloses a pin forming device.

[0013] Reference Figures 1-7A pin forming device includes a base 1, a forming mechanism 2 installed at the center of the base 1, and a discharge mandrel 11 installed at the center of the forming mechanism 2 along the thickness direction of the base 1. The output end of the discharge mandrel 11 has a V-groove 111, and the discharge mandrel 11 is driven by a power mechanism on the back of the base 1. Several forming rods 4 are arranged in a circular array around the forming mechanism 2, and the forming rods 4 are driven by a drive mechanism 5. The feeding end of the forming mechanism 2 introduces wire through a guide groove 12, and the other end of the guide groove 12 is connected to a feeding mechanism. The forming mechanism 2 includes a base plate 21 and a cover plate 22. The base plate 21 has a cavity 211 at its center, and a forming block 3 for forming the wire is provided in the cavity 211. A forming rod 4 for driving the forming block 3 is provided on the outside of the forming block 3, and the forming rod 4 is slidably installed in the sliding groove 212 around the cavity 211. A cutting blade 6 is also installed on the forming block 3 near the feeding end of the forming mechanism 2. First, the feeding mechanism accurately conveys the wire to the guide trough 12. The wire then stably enters the feeding end of the forming mechanism 2 along the guide trough 12. The feeding mechanism adopts gear feeding, lead screw feeding, or swing arm feeding. The gear feeding, lead screw feeding, or swing arm feeding respectively adopts the gear feeding structure in the automatic stamping and bending forming machine with gear feeding in CN221754382U, the lead screw feeding structure in the automatic stamping and bending forming machine with lead screw feeding in CN221773199U, and the swing arm feeding mechanism in the automatic stamping and bending forming machine in CN117983746A. After entering the forming mechanism 2, the wire first reaches the forming block 3 near the feeding end, which is equipped with a cutting blade 6. Under the action of the driving mechanism 5 driving the corresponding forming rod 4 to slide, the cutting blade 6 on the forming block 3 first precisely cuts the wire to obtain pin raw material that meets the length requirements. Then, the driving mechanism 5 drives the remaining forming rods 4, which are arranged in a circular array around the forming mechanism 2 and slidably installed in the slide groove 212 of the cavity 211, to drive the corresponding forming block 3 in the cavity 211 to move synchronously, and perform multi-station collaborative forming on the cut wire to process the required protrusion 37 structure or specific cross-sectional shape. After the pin is formed, the formed pin is stably discharged along the discharge mandrel 11 at the center of the forming mechanism 2 of the base 1. The V-groove 111 design at the output end of the discharge mandrel 11 provides precise guidance for the formed pin. The whole process realizes the integrated operation of wire feeding, cutting, multi-station forming and precise discharge.

[0014] Reference Figures 1-7The molding block 3 includes a first block 31, a second block 32, a third block 33, and a fourth block 34 distributed clockwise within the cavity 211. A lower block 35 is mounted at the bottom of the first block 31 and the second block 32, and an upper block 36 is mounted at the top of the third block 33 and the fourth block 34. Both the top of the lower block 35 and the bottom of the upper block 36 have protrusions 37. The first block 31 and the second block 32 are slidably mounted on both sides of the protrusions 37 at the top of the lower block 35, and the third block 33 and the fourth block 34 are slidably mounted on both sides of the protrusions 37 at the bottom of the upper block 36. A first sliding rod 38 is provided between the first block 31 and the second block 32, the third block 33 and the fourth block 34, penetrating the protrusions 37. A second sliding rod 39 is provided between the first block 31 and the fourth block 34, and the second block 32 and the third block 33. Both ends of the first sliding rod 38 and the second sliding rod 39 are slidably mounted within the molding block 3. The forming rod 4 includes a first rod 41, a second rod 42, a third rod 43, and a fourth rod 44 arranged circumferentially on the base 1 in a clockwise direction. The second rod 42 and the fourth rod 44 are fixedly connected to the lower block 35 and the upper block 36, respectively. The output end of the first rod 41 contacts the side of the first block 31 and the fourth block 34, and the output end of the third rod 43 contacts the side of the second block 32 and the third block 33. Grooves 7 for accommodating wires are provided between the first block 31 and the fourth block 34, and between the protrusions 37 of the lower block 35 and the upper block 36. Forming grooves 8 for pin protrusions 37 are provided between the opposite surfaces of the second block 32 and the third block 33 and the first block 31 and the fourth block 34. The cutting blade 6 is installed at the bottom of the fourth block 34, wherein the cutting blade 6 corresponds to the groove 7, and the side of the cutting blade 6 facing the feed port of the forming mechanism 2 is provided with a wire groove 61, and the top of the first block 31 is provided with a cutting groove corresponding to the cutting blade 6.After the feeding mechanism conveys the wire through the guide trough 12 to the forming mechanism 2 cavity 211, the wire is first precisely positioned by the cutting blade 6 at the bottom of the fourth block 34 towards the wire groove 61 on the side of the inlet. Then, the drive mechanism 5 is driven by the planetary gears in the base 1, where the planetary gears are driven to rotate synchronously by the sun gear at the center of the base 1, synchronously driving the drive mechanism 5 to work. Specifically, the second rod 42 and the fourth rod 44 respectively drive the lower block 35 to rise and the upper block 36 to fall to form the strip entering the forming cavity. The protrusion 37 between the lower block 35 and the upper block 36 and the groove 7 between the first block 31 and the fourth block 34 compress the entering strip, and the strip is compressed. Then, the strips are stacked in the forming groove 8 between the two sides of the protrusion 37 and between the protrusion 37 and the first block 31 and the fourth block 34. Then, the drive mechanism 5 drives the first rod 41 and the third rod 43 to move, causing the first block 31, the second block 32, the third block 33 and the fourth block 34 to move closer together between the upper block 36 and the lower block 35. This causes the forming groove 8 between the second block 32 and the third block 33 and the opposite surfaces of the first block 31 and the fourth block 34 to squeeze the wire in the groove 7, thus forming the protrusion 37 structure required for the pin. After the forming is completed, each forming rod 4 is reset, and the formed pin is sent out along the discharge core rod 11, completing the entire forming process.

[0015] Reference Figures 1-7The driving mechanism 5 includes a base plate 51 and a sliding plate 52 slidably mounted on the base plate 51. The output end of the sliding plate 52 acts on the molding block 3. A conjugate cam 53 is rotatably mounted on the base plate 51. The conjugate cam 53 is driven by the central shaft 531 of the planetary gear in the base 1. The outer side of the central shaft 531 passes through the strip-shaped perforation 521 on the sliding plate 52. The portion of the central shaft 531 located outside the strip-shaped perforation 521 is provided with a limiting ring 532. The sliding plate 52 is provided with a first action block 522 and a second action block 523 on both sides of the conjugate cam 53. The conjugate cam 53 cooperates with the first action block 522 and the second action block 523 to control the movement of the sliding plate 52 on the base plate 51. First, the central shaft 531 of the planetary gears inside the base 1 provides power, driving the conjugate cam 53 rotatably mounted on the base plate 51 to rotate. As the conjugate cam 53 rotates, its contour will cooperate with the first action block 522 and the second action block 523 on both sides of the sliding plate 52. When the protruding part of the conjugate cam 53 contacts the first action block 522, it will push the sliding plate 52 to slide along the base plate 51 towards the forming block 3. When the protruding part of the conjugate cam 53 turns to contact the second action block 523, it will drive the sliding plate 52 to reset along the base plate 51 away from the forming block 3. During this process, the central shaft 531 will slide synchronously in the strip-shaped perforation 521 on the sliding plate 52, and the limiting retaining ring 532 on the outside of the central shaft 531 can prevent the sliding plate 52 from disengaging from the central shaft 531, ensuring the stable movement of the sliding plate 52. Finally, the sliding plate 52 acts on the corresponding forming block 3 through its output end, driving the forming block 3 to complete the cutting or forming action of the wire, realizing the precise control of the forming process by the drive mechanism 5.

[0016] Working principle: The feeding mechanism guides the wire through the guide groove 12 into the feed end of the forming mechanism 2. The wire enters the cavity 211 of the forming mechanism 2 along the guide groove 12. The cutting blade 6 on the forming block 3 near the feed end cuts the wire according to the set length after it enters the cavity 211. The cutting blade 6 cooperates with the cutting groove on the top of the first block 31 to ensure that the cut end face is flat. The cut strip is positioned by the groove 7. The conjugate cam 53 in the drive mechanism 5 is driven by the planetary gear central shaft 531 in the base 1. When the central shaft 531 rotates, the limiting ring 532 on its outer side restricts the movement range of the sliding plate 52 on the base plate 51. The conjugate cam 53 cooperates with the first action block 522 and the second action block 523 on the sliding plate 52 to control the movement of the sliding plate 52, thereby driving the forming rod 4 to slide in the groove 212 around the cavity 211. The forming rod 4 drives the forming block 3 to move, gradually forming the wire. The lower block 35 and the upper block 36, the first block 31 and the fourth block 34 respectively squeeze the strip from the top and bottom, causing the first block 31, the second block 32, the third block 33 and the fourth block 34 to move closer together between the upper block 36 and the lower block 35. The forming groove 8 is used to squeeze the wire to form the protrusion 37 structure of the pin. After forming, the pin is accurately discharged through the V-groove 111 of the discharge mandrel 11, driven by the power mechanism on the back of the base 1. The power mechanism is driven by a cylinder. The whole process realizes the integration of feeding, cutting, multi-station forming and accurate discharge.

[0017] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pin forming device, characterized in that: include A base (1) is provided, and a forming mechanism (2) is installed at the center of the base (1). A discharge mandrel (11) is installed at the center of the forming mechanism (2) along the thickness direction of the base (1). A plurality of forming rods (4) are arranged in a circular array around the forming mechanism (2), wherein the forming rods (4) are driven by a driving mechanism (5). The forming mechanism (2) has a feeding end that feeds wire through a guide trough (12). The other end of the guide trough (12) is connected to a feeding mechanism. The forming mechanism (2) includes a base plate (21) and a cover plate (22). The base plate (21) has a cavity (211) in the center. The cavity (211) has a forming block (3) for forming the wire. The outer side of the forming block (3) has a forming rod (4) for driving the forming block (3) to move. The forming rod (4) is slidably installed in the groove (212) around the cavity (211). The forming block (3) near the feeding end of the forming mechanism (2) is also equipped with a cutting blade (6).

2. The pin forming device according to claim 1, characterized in that: The molding block (3) includes a first block (31), a second block (32), a third block (33), and a fourth block (34) distributed clockwise within the cavity (211). The bottom of the first block (31) and the second block (32) is also fitted with a lower block (35), and the top of the third block (33) and the fourth block (34) is also fitted with an upper block (36). The top of the lower block (35) and the bottom of the upper block (36) are both provided with protrusions (37). The first block (31) and the second block (32) are slidably mounted on both sides of the protrusions (37) on the top of the lower block (35), and the third block (33) and the fourth block (34) are slidably mounted on both sides of the protrusions (37) at the bottom of the upper block (36).

3. The pin forming device according to claim 2, characterized in that: A first sliding rod (38) with a through protrusion (37) is provided between the first block (31), the second block (32), the third block (33), and the fourth block (34), and a second sliding rod (39) is provided between the first block (31) and the fourth block (34), and between the second block (32) and the third block (33), wherein both ends of the first sliding rod (38) and the second sliding rod (39) are slidably installed in the molding block (3).

4. The pin forming device according to claim 3, characterized in that: The forming rod (4) includes a first rod (41), a second rod (42), a third rod (43) and a fourth rod (44) arranged in a clockwise circumferential array on the base (1), wherein the second rod (42) and the fourth rod (44) are fixedly connected to the lower block (35) and the upper block (36) respectively, the output end of the first rod (41) contacts the side of the first block (31) and the fourth block (34), and the output end of the third rod (43) contacts the side of the second block (32) and the third block (33).

5. The pin forming device according to claim 4, characterized in that: Grooves (7) for accommodating wires are provided between the first block (31) and the fourth block (34), and between the protrusions (37) of the lower block (35) and the upper block (36). A forming groove (8) for the pin protrusion (37) is provided between the second block (32) and the third block (33) and the opposite surfaces of the first block (31) and the fourth block (34).

6. The pin forming device according to claim 5, characterized in that: The cutting blade (6) is installed at the bottom of the fourth block (34), wherein the cutting blade (6) corresponds to the groove (7), and the cutting blade (6) is provided with a wire groove (61) on the side facing the feed port of the forming mechanism (2), and the top of the first block (31) is provided with a cutting groove corresponding to the cutting blade (6).

7. The pin forming device according to claim 1, characterized in that: The output end of the discharge mandrel (11) is provided with a V-groove (111), and the discharge mandrel (11) is driven by a power mechanism on the back of the base (1).

8. The pin forming device according to claim 1, characterized in that: The driving mechanism (5) includes a base plate (51) and a sliding plate (52) slidably mounted on the base plate (51). The output end of the sliding plate (52) acts on the forming block (3). A conjugate cam (53) is rotatably mounted on the base plate (51). The conjugate cam (53) is driven by the central shaft (531) of the planetary gear in the base (1). The outer side of the central shaft (531) passes through the strip-shaped perforation (521) on the sliding plate (52). The portion of the central shaft (531) located outside the strip-shaped perforation (521) is provided with a limiting retaining ring (532). The sliding plate (52) is provided with a first action block (522) and a second action block (523) on both sides of the conjugate cam (53). The conjugate cam (53) cooperates with the first action block (522) and the second action block (523) to control the movement of the sliding plate (52) on the base plate (51).

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