Demolding device and demolding method for hardware pin cold forging machining

Abstract

The invention relates to the technical field of cold forging machining, and provides a demolding device and demolding method for hardware pin cold forging machining, the demolding device comprises a cold forging machine tool shell, an ejection mechanism, a movable mold mechanism, a feeding mechanism and a demolding mechanism, a static mold cavity and a fixing table are arranged on the upper surface of the cold forging machine tool shell, and the ejection mechanism is arranged below the static mold cavity; the demolding mechanism comprises a second wedge-shaped block, a second L-shaped frame, a second ball head piece, a second sliding rod, a fourth spring and a clamping block, a collecting box is arranged on the side, close to the fixing table, of the cold forging machine tool shell, and a hydraulic lifting rod is used for controlling a longitudinal frame, a movable mold and the wedge-shaped frame to ascend; on one hand, a clamping block can be driven to automatically fix a plug pin ejected out of a static mold cavity, on the other hand, the clamping block is controlled to loosen the plug pin while the plug pin is driven to automatically move to a collecting box, and hardware wires to be machined can be automatically fed into the static mold cavity. The device has the advantages of being ingenious in structural matching and capable of achieving automatic feeding, automatic demolding and automatic discharging.

Description

Technical Field

[0001] The invention relates to the technical field of cold forging, in particular to a demoulding device and a demoulding method for cold forging of a hardware pin. Background Art

[0002] Cold forging of metal pins is a common metal forming process, mainly used to produce various hardware pins, connectors, components and other parts. Cold forging refers to a processing method for plastic deformation of metal at room temperature. It has the characteristics of high material utilization, excellent mechanical properties, high dimensional accuracy and high production efficiency.

[0003] When cold forging metal pins, the disc wire is generally cut into fixed-length wire segments first, and then the wire segments are sent to the cold forging machine for forming. The metal flows and fills the mold through impact or pressure.

[0004] The existing cold forging machines for metal pins have the following defects when in use: on the one hand, the cold forgings may be difficult to demold due to the complex shape and high dimensional accuracy in the mold, and require additional effort or tools, which increases production costs and time; on the other hand, the cold forgings after demolding cannot be automatically loaded when they are sent to the designated area. Summary of the invention

[0005] The object of the present invention is to provide a demoulding device and a demoulding method for cold forging of metal pins, aiming to solve the problems existing in the use of existing cold forging machines for metal pins.

[0006] To achieve the above object, the present invention provides the following technical solution: a demoulding device for cold forging of hardware pins, comprising a cold forging machine housing and a material ejection mechanism, wherein a static die cavity and a fixed platform are arranged on the upper surface of the cold forging machine housing, the material ejection mechanism is arranged below the static die cavity, and a collection box is arranged on one side of the cold forging machine housing close to the fixed platform, and further comprising:

[0007] A movable die mechanism, the movable die mechanism comprising a hydraulic lifting rod, a longitudinal frame, a movable die, a wedge frame and a first tooth groove, the lower part of the hydraulic lifting rod is fixedly connected to the cold forging machine housing, the longitudinal frame is fixedly connected to the upper part of the hydraulic lifting rod, the movable die and the wedge frame are both fixedly connected to the longitudinal frame, and the surface of the wedge frame is provided with a first tooth groove;

[0008] A feeding mechanism, the feeding mechanism comprises a transmission part and a horizontal moving part, the transmission part is connected to the upper surface of the cold forging machine shell, the horizontal moving part comprises a moving frame, a receiving hole, a first L-shaped frame and a second tooth groove, the inner wall of the moving frame is provided with a second tooth groove near the cold forging machine shell, two first L-shaped frames are respectively fixedly connected to both sides of the moving frame, the upper surface of the moving frame is provided with a receiving hole, a hardware wire is placed in the receiving hole, the first tooth groove and the second tooth groove are both connected to the transmission part in a transmission manner, the lower surfaces of the moving frame and the hardware wire are both in sliding contact with the surface of the cold forging machine shell, and the middle position of the longitudinal frame is in sliding contact with the moving frame;

[0009] The demoulding mechanism includes a second wedge block, a second L-shaped frame, a second ball head piece, a second slide rod, a fourth spring and a clamping block. The second wedge block, the second slide rod, the second ball head piece and the clamping block are all fixedly connected to the second L-shaped frame. The fourth spring is connected between the second L-shaped frame and the first L-shaped frame. The second slide rod passes through the surface of the movable frame. The second wedge block and the second ball head piece correspond to the positions of the fixed platform and the wedge frame respectively.

[0010] A demoulding method for cold forging of hardware pins, the specific steps comprising:

[0011] S100, after the movable die cold-forges the metal wire in the static die cavity into a pin, the hydraulic lifting rod is used to control the longitudinal frame, the movable die and the wedge frame to rise a certain distance until the first tooth groove is about to engage with the transmission part and stops. During this process, on the one hand, the ejection mechanism ejects the pin upward from the static die cavity, and on the other hand, the wedge frame is separated from the second ball head member, and the elastic deformation of the fourth spring can instantly control the two clamping blocks to fix and clamp the pin;

[0012] S200, using a hydraulic lifting rod to control the longitudinal frame, the movable mold and the wedge frame to rise, the rising longitudinal frame uses the transmission connection between the first tooth groove, the transmission part and the second tooth groove to control the feeding mechanism to move toward the direction close to the collection box, during this process, the moving second wedge block controls the two clamping blocks to move in the opposite direction by slidingly connecting with the fixed table, and stops when the receiving hole is aligned with the static mold cavity, at which time the hardware wire in the receiving hole automatically falls into the static mold cavity, and the pin falls from between the two clamping blocks into the collection box;

[0013] S300, using the hydraulic lifting rod to control the longitudinal frame, the movable mold and the wedge frame to descend and reset, and continue to use the movable mold to cold forge the metal wire in the static mold cavity into a pin. The feeding mechanism is first reset horizontally, and then the descending wedge frame controls the two clamping blocks to move and reset in the opposite direction by slidingly connecting with the second ball head piece, thereby ensuring that the movable mold can smoothly enter the static mold cavity.

[0014] The beneficial effects of the present invention are as follows: in the process of controlling the longitudinal frame, the movable mold and the wedge-shaped frame to rise by the hydraulic lifting rod, on the one hand, the clamping block can be driven to automatically fix the pins ejected from the static mold cavity, and on the other hand, the pins are driven to automatically move to the collection box while the clamping block is controlled to release the pins, and the hardware wires to be processed can also be automatically fed into the static mold cavity, and the present invention has the characteristics of ingenious structural coordination, automatic loading, automatic demoulding and automatic unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a first stereoscopic view of the cold forging machine housing according to an embodiment of the present invention.

[0016] Figure 2 It is a planar cross-sectional view of a cold forging machine housing according to an embodiment of the present invention.

[0017] Figure 3 It is an exploded view of the movable mold mechanism of an embodiment of the present invention.

[0018] Figure 4 It is an exploded view of the ejection mechanism according to an embodiment of the present invention.

[0019] Figure 5 It is an exploded view of the feeding mechanism according to an embodiment of the present invention.

[0020] Figure 6 It is a three-dimensional diagram of the demoulding mechanism according to an embodiment of the present invention.

[0021] Figure 7 It is an assembly diagram of the movable mold mechanism, the feeding mechanism and the demoulding mechanism according to an embodiment of the present invention.

[0022] Figure 8 It is a first planar cross-sectional view of the present invention.

[0023] Fig. 9 It is a second plane cross-sectional view of the present invention.

[0024] Fig.10 This is the first stereogram of the present invention.

[0025] Fig.11 It is a third plane cross-sectional view of the present invention.

[0026] Fig.12 It is a second stereogram of the present invention.

[0027] Figure numerals: 1-cold forging machine housing, 11-feeding channel, 111-dropping port, 12-static mold cavity, 13-longitudinal guide rail, 131-inclined table, 14-limiting plate, 15-fixed table, 16-collection box, 2-movable mold mechanism, 21-hydraulic lifting rod, 22-longitudinal frame, 23-movable mold, 24-wedge frame, 25-first tooth groove, 26-first mounting hole, 27-linkage part, 271-linkage plate, 272-first ball head, 273-first spring, 3-ejection mechanism, 31-ejection rod, 32-base, 321-third mounting hole, 33-second spring, 34 -pressure-bearing part, 341-first wedge block, 342-first slide bar, 343-third spring, 4-feeding mechanism, 41-transmission part, 411-first transmission gear, 412-transmission rod, 413-second transmission gear, 42-horizontal moving part, 421-moving frame, 422-accommodating hole, 423-first L-shaped frame, 424-second mounting hole, 425-second tooth groove, 5-demolding mechanism, 51-second wedge block, 52-second L-shaped frame, 53-second slide bar, 54-second ball head, 55-fourth spring, 56-clamping block, 6-pin, 7-hardware wire. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0030] See also Figures 1 to 12 In one embodiment of the present invention, a demoulding device for cold forging of a hardware pin includes a cold forging machine housing 1 and a material ejection mechanism 3. The upper surface of the cold forging machine housing 1 is provided with a static die cavity 12 and a fixed platform 15. The material ejection mechanism 3 is arranged below the static die cavity 12. A collection box 16 is arranged on one side of the cold forging machine housing 1 close to the fixed platform 15. The device also includes:

[0031] The movable die mechanism 2 includes a hydraulic lifting rod 21, a longitudinal frame 22, a movable die 23, a wedge frame 24 and a first tooth groove 25. The lower part of the hydraulic lifting rod 21 is fixedly connected to the cold forging machine housing 1, the longitudinal frame 22 is fixedly connected to the upper part of the hydraulic lifting rod 21, the movable die 23 and the wedge frame 24 are both fixedly connected to the longitudinal frame 22, and the surface of the wedge frame 24 is provided with a first tooth groove 25;

[0032] The feeding mechanism 4 comprises a transmission part 41 and a horizontal moving part 42, wherein the transmission part 41 is connected to the upper surface of the cold forging machine housing 1, and the horizontal moving part 42 comprises a moving frame 421, a receiving hole 422, a first L-shaped frame 423, a second mounting hole 424, and a second tooth groove 425. The inner wall of the moving frame 421 is provided with a second tooth groove 425 near the cold forging machine housing 1, and the two first L-shaped frames 423 are respectively fixedly connected to both sides of the moving frame 421, and the upper surface of the moving frame 421 is provided with a receiving hole 422, and the hardware wire 7 is placed in the receiving hole 422. The first tooth groove 25 and the second tooth groove 425 are both connected to the transmission part 41 in a transmission manner, and the lower surfaces of the moving frame 421 and the hardware wire 7 are both in sliding contact with the surface of the cold forging machine housing 1, and the middle position of the longitudinal frame 22 is in sliding contact with the moving frame 421;

[0033] The demoulding mechanism 5 includes a second wedge block 51, a second L-shaped frame 52, a second ball head member 54, a second slide rod 53, a fourth spring 55 and a clamping block 56. The second wedge block 51, the second slide rod 53, the second ball head member 54 and the clamping block 56 are all fixedly connected to the second L-shaped frame 52. The fourth spring 55 is connected between the second L-shaped frame 52 and the first L-shaped frame 423. The second slide rod 53 passes through the second mounting hole 424 on the surface of the movable frame 421. The second wedge block 51 and the second ball head member 54 correspond to the positions of the fixed platform 15 and the wedge frame 24 respectively.

[0034] See also Figure 1 , Figure 2 and Fig.10 Furthermore, a feeding channel 11 is fixedly connected to the upper surface of the cold forging machine tool housing 1 , a blanking port 111 is provided on the surface of the feeding channel 11 , and the movable frame 421 is in sliding contact with the surface of the feeding channel 11 .

[0035] See also Fig. 9 and Fig.11 Furthermore, when the accommodating hole 422 is aligned with the blanking port 111 up and down, the metal wire 7 enters the accommodating hole 422 from the blanking port 111, and when the accommodating hole 422 is aligned with the static mold cavity 12 up and down, the metal wire 7 enters the static mold cavity 12 from the accommodating hole 422.

[0036] In the embodiment of the present invention, the transmission part 41 includes a first transmission gear 411, a transmission rod 412 and a second transmission gear 413. The first transmission gear 411 and the second transmission gear 413 are both fixedly connected to the transmission rod 412. The upper surface of the cold forging machine tool housing 1 is connected to the transmission rod 412. The first tooth groove 25 and the second tooth groove 425 are respectively connected to the first transmission gear 411 and the second transmission gear 413. The bottom of the feeding channel 11 is inclined toward the blanking port 111. Hardware wire 7 is placed in the feeding channel 11. The hardware wire 7 is cut into a fixed length by a cutting device by a disc wire. The hardware wire 7 is divided into multiple types according to the length size, which will not be repeated here.

[0037] See also Figures 8 to 11 In one embodiment of the present invention, the movable mold mechanism 2 further includes a linkage portion 27, the linkage portion 27 includes a linkage plate 271, a first ball head member 272 and a first spring 273, the linkage plate 271 is fixedly connected to the first ball head member 272, the end of the longitudinal frame 22 away from the movable mold 23 is provided with a first mounting hole 26, the linkage plate 271 passes through the first mounting hole 26, and the first spring 273 is connected between the first ball head member 272 and the longitudinal frame 22.

[0038] See also Figure 2 , Figures 8 to 11 Furthermore, a longitudinal guide rail 13 and a limit plate 14 are fixedly connected to the inner wall of the cold forging machine housing 1 , a ramp 131 is provided on the surface of the longitudinal guide rail 13 , and the first ball head member 272 is in sliding contact with the surface of the longitudinal guide rail 13 .

[0039] In an embodiment of the present invention, the first ball head component 272 and the second ball head component 54 are both smooth spheres, and the inclined platform 131 is used to divide the longitudinal guide rail 13 into two upper and lower parts, and the distance between the longitudinal guide rail 13 and the longitudinal frame 22 below the inclined platform 131 is smaller than the distance between the longitudinal guide rail 13 and the longitudinal frame 22 above the inclined platform 131.

[0040] See also Figure 4 and Fig.11 In one embodiment of the present invention, the ejection mechanism 3 includes an ejection rod 31, a base 32 and a second spring 33. The top of the ejection rod 31 is located in the static mold cavity 12, and the base 32 is fixedly connected to the bottom of the ejection rod 31. A third mounting hole 321 is provided on the surface of the base 32. The second spring 33 is connected between the static mold cavity 12 and the base 32.

[0041] The ejecting mechanism 3 also includes a pressure-bearing part 34, which is installed in the third mounting hole 321. The pressure-bearing part 34 includes a first wedge block 341, a first slide rod 342 and a third spring 343. The first wedge block 341 is fixedly connected to the first slide rod 342, the first slide rod 342 is slidably connected to the base 32, and the third spring 343 is connected between the first wedge block 341 and the base 32.

[0042] In the embodiment of the present invention, the lower surface of the base 32 is in contact with the limit plate 14 at half of its portion away from the linkage plate 271. When the first ball head member 272 moves downward along the ramp 131, the linkage plate 271 is in sliding contact with the upper surface of the first wedge block 341, and is used to move to the initial state below the base 32. When the movable mold 23 is in contact with the surface of the cold forging machine tool housing 1, the linkage plate 271 is distributed below the first wedge block 341.

[0043] A demoulding method for cold forging of hardware pins, the specific steps comprising:

[0044] S100, after the movable mold 23 cold forges the metal wire 7 in the static mold cavity 12 into the pin 6, the hydraulic lifting rod 21 is used to control the longitudinal frame 22, the movable mold 23 and the wedge frame 24 to rise a certain distance until the first tooth groove 25 is about to engage with the transmission part 41 and stops. In this process, on the one hand, the linkage plate 271 that moves synchronously with the longitudinal frame 22 drives the ejector rod 31 to eject the pin 6 from the static mold cavity 12 through the first wedge block 341. At this time, since the first ball head 272 slides upward along the surface of the longitudinal guide rail 13 over the inclined platform 131, the elastic force of the first spring 273 drives the linkage plate 271 to move horizontally for a certain distance, so that the linkage plate 271 is horizontally separated from the first wedge block 341, and the elastic force of the second spring 33 drives the ejector rod 31 to move downward and reset. On the other hand, since the wedge frame 24 is separated from the second ball head 54, the elastic deformation of the fourth spring 55 can instantly control the two clamping blocks 56 to fix and clamp the pin 6.

[0045] S200, using the hydraulic lifting rod 21 to control the longitudinal frame 22, the movable mold 23 and the wedge frame 24 to rise, the rising longitudinal frame 22 uses the transmission connection between the first tooth groove 25, the transmission part 41 and the second tooth groove 425 to control the feeding mechanism 4 to move toward the collection box 16. In this process, the moving second wedge block 51 controls the two clamping blocks 56 to move in the opposite direction by slidingly connecting with the fixed platform 15 until the receiving hole 422 is aligned with the static mold cavity 12, and the metal wire 7 in the receiving hole 422 automatically falls into the static mold cavity 12, and the pin 6 falls from between the two clamping blocks 56 into the collection box 16;

[0046] S300, use the hydraulic lifting rod 21 to control the longitudinal frame 22, the movable mold 23 and the wedge frame 24 to descend and reset, and continue to use the movable mold 23 to cold forge the metal wire 7 in the static mold cavity 12 into the pin 6. The feeding mechanism 4 is first reset horizontally. At this time, the accommodating hole 422 is aligned with the blanking port 111 up and down, and the hardware wire 7 in the feeding channel 11 automatically enters the accommodating hole 422 from the blanking port 111. Then the descending wedge frame 24 controls the two clamping blocks 56 to move and reset in the opposite direction by slidingly connecting with the second ball head member 54, thereby ensuring that the movable mold 23 smoothly enters the static mold cavity 12. In this process, since the first ball head member 272 slides downward along the longitudinal guide rail 13 at this time The first wedge block 341 is moved horizontally by the elastic force of the third spring 343, and the first wedge block 341 is reset horizontally by the elastic force of the third spring 343, so that the first wedge block 341 is placed above the linkage plate 271, and the next round of cold forging processing can be automatically performed.

[0047] In summary, the present application utilizes a structural design in which the ejecting mechanism 3, the movable mold mechanism 2, the feeding mechanism 4 and the demolding mechanism 5 cooperate with each other, and utilizes the hydraulic lifting rod 21 to control the longitudinal frame 22, the movable mold 23 and the wedge frame 24 to rise. On the one hand, it can drive the clamping block 56 to automatically fix the pin 6 ejected from the static mold cavity 12, and on the other hand, it can drive the pin 6 to automatically move to the collection box 16 while controlling the clamping block 56 to release the pin 6, and it can also automatically feed the hardware wire 7 to be processed into the static mold cavity 12, and has the characteristics of ingenious structural coordination, automatic loading, automatic demolding and automatic unloading.

[0048] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A demoulding device for cold forging of hardware pins, comprising a cold forging machine housing (1) and a material ejection mechanism (3), wherein the upper surface of the cold forging machine housing (1) is provided with a static die cavity (12) and a fixed platform (15), the material ejection mechanism (3) is arranged below the static die cavity (12), and a collecting box (16) is arranged on one side of the cold forging machine housing (1) close to the fixed platform (15), characterized in that: Also includes: A movable die mechanism (2), the movable die mechanism (2) comprising a hydraulic lifting rod (21), a longitudinal frame (22), a movable die (23), a wedge frame (24) and a first tooth groove (25), the hydraulic lifting rod (21) being fixedly connected to the cold forging machine tool housing (1) at the bottom, the longitudinal frame (22) being fixedly connected to the top of the hydraulic lifting rod (21), the movable die (23) and the wedge frame (24) being fixedly connected to the longitudinal frame (22), and the first tooth groove (25) being provided on the surface of the wedge frame (24); A feeding mechanism (4), the feeding mechanism (4) comprising a transmission part (41) and a horizontal moving part (42), the transmission part (41) being connected to the upper surface of a cold forging machine housing (1), the horizontal moving part (42) comprising a moving frame (421), a receiving hole (422), a first L-shaped frame (423) and a second tooth groove (425), the inner wall of the moving frame (421) being provided with a second tooth groove (425) near the cold forging machine housing (1), the two first L-shaped frames (423) ) are respectively fixedly connected to both sides of the moving frame (421); the upper surface of the moving frame (421) is provided with a receiving hole (422); a metal wire (7) is placed in the receiving hole (422); the first tooth groove (25) and the second tooth groove (425) are both transmission-connected to the transmission part (41); the lower surfaces of the moving frame (421) and the metal wire (7) are both in sliding contact with the surface of the cold forging machine tool housing (1); and the middle position of the longitudinal frame (22) is in sliding contact with the moving frame (421); A demoulding mechanism (5), the demoulding mechanism (5) comprising a second wedge block (51), a second L-shaped frame (52), a second ball head component (54), a second slide bar (53), a fourth spring (55) and a clamping block (56); the second wedge block (51), the second slide bar (53), the second ball head component (54) and the clamping block (56) are all fixedly connected to the second L-shaped frame (52); the fourth spring (55) is connected between the second L-shaped frame (52) and the first L-shaped frame (423); the second slide bar (53) passes through the surface of the movable frame (421); the second wedge block (51) and the second ball head component (54) correspond to the positions of the fixed platform (15) and the wedge frame (24), respectively.

2. A demoulding device for cold forging of metal pins according to claim 1, characterized in that: The movable mold mechanism (2) further comprises a linkage part (27), wherein the linkage part (27) comprises a linkage plate (271), a first ball head component (272) and a first spring (273), wherein the linkage plate (271) is fixedly connected to the first ball head component (272), a first mounting hole (26) is provided at one end of the longitudinal frame (22) away from the movable mold (23), the linkage plate (271) passes through the first mounting hole (26), and the first spring (273) is connected between the first ball head component (272) and the longitudinal frame (22).

3. A demoulding device for cold forging of metal pins according to claim 2, characterized in that: The ejection mechanism (3) comprises an ejection rod (31), a base (32) and a second spring (33); the upper portion of the ejection rod (31) is located in the static mold cavity (12); the base (32) is fixedly connected to the lower portion of the ejection rod (31); a third mounting hole (321) is provided on the surface of the base (32); and the second spring (33) is connected between the static mold cavity (12) and the base (32).

4. A demoulding device for cold forging of metal pins according to claim 3, characterized in that: The ejection mechanism (3) also includes a pressure-bearing portion (34), which is installed in the third installation hole (321). The pressure-bearing portion (34) includes a first wedge block (341), a first slide bar (342) and a third spring (343). The first wedge block (341) is fixedly connected to the first slide bar (342), the first slide bar (342) is slidably connected to the base (32), and the third spring (343) is connected between the first wedge block (341) and the base (32).

5. A demoulding device for cold forging of metal pins according to claim 4, characterized in that: A longitudinal guide rail (13) and a limit plate (14) are fixedly connected to the inner wall of the cold forging machine housing (1); a ramp (131) is provided on the surface of the longitudinal guide rail (13); and the first ball head component (272) is in sliding contact with the surface of the longitudinal guide rail (13).

6. A demoulding device for cold forging of metal pins according to claim 5, characterized in that: A portion of the lower surface of the base (32) away from the linkage plate (271) contacts the limit plate (14); when the first ball head (272) moves downward along the ramp (131), the linkage plate (271) comes into sliding contact with the upper surface of the first wedge block (341) to move below the base (32).

7. A demoulding device for cold forging of metal pins according to claim 1, characterized in that: A feeding channel (11) is fixedly connected to the upper surface of the cold forging machine tool housing (1), a feeding opening (111) is provided on the surface of the feeding channel (11), and the movable frame (421) is in sliding contact with the surface of the feeding channel (11).

8. A demoulding device for cold forging of metal pins according to claim 7, characterized in that: When the accommodating hole (422) is aligned with the blanking opening (111) in vertical direction, the metal wire (7) enters the accommodating hole (422) from the blanking opening (111); and when the accommodating hole (422) is aligned with the static mold cavity (12) in vertical direction, the metal wire (7) enters the static mold cavity (12) from the accommodating hole (422).

9. A demoulding device for cold forging of metal pins according to claim 8, characterized in that: The transmission part (41) comprises a first transmission gear (411), a transmission rod (412) and a second transmission gear (413); the first transmission gear (411) and the second transmission gear (413) are both fixedly connected to the transmission rod (412); the upper surface of the cold forging machine housing (1) is connected to the transmission rod (412); and the first tooth groove (25) and the second tooth groove (425) are respectively transmission-connected to the first transmission gear (411) and the second transmission gear (413).

10. A demoulding method for cold forging of metal pins, applied to a demoulding device for cold forging of metal pins as claimed in any one of claims 1 to 9, characterized in that: The specific steps include: S100, after the movable die (23) cold-forges the metal wire (7) in the static die cavity (12) into a plug pin (6), the hydraulic lifting rod (21) is used to control the longitudinal frame (22), the movable die (23) and the wedge frame (24) to rise a certain distance until the first tooth groove (25) is about to engage with the transmission part (41), and then the first tooth groove (25) stops. During this process, on the one hand, the ejection mechanism (3) ejects the plug pin (6) upward from the static die cavity (12), and on the other hand, the wedge frame (24) is separated from the second ball head (54), and the elastic deformation of the fourth spring (55) can instantly control the two clamping blocks (56) to fix and clamp the plug pin (6); S200, using the hydraulic lifting rod (21) to control the longitudinal frame (22), the movable mold (23) and the wedge frame (24) to rise, the rising longitudinal frame (22) uses the transmission connection between the first tooth groove (25), the transmission part (41) and the second tooth groove (425) to control the feeding mechanism (4) to move in the direction close to the collection box (16), during which the moving second wedge block (51) controls the two clamping blocks (56) to move in the opposite direction by sliding connection with the fixed platform (15) until the receiving hole (422) and the static mold cavity (12) are aligned vertically and stop, at which time the hardware wire (7) in the receiving hole (422) automatically falls into the static mold cavity (12), and the pin (6) falls from between the two clamping blocks (56) into the collection box (16); S300, using the hydraulic lifting rod (21) to control the longitudinal frame (22), the movable mold (23) and the wedge frame (24) to descend and reset, and in the process of continuing to use the movable mold (23) to cold forge the metal wire (7) in the static mold cavity (12) into the pin (6), the feeding mechanism (4) is first reset horizontally, and then the descending wedge frame (24) controls the two clamping blocks (56) to move and reset in the opposite direction by slidingly connecting with the second ball head member (54), thereby ensuring that the movable mold (23) smoothly enters the static mold cavity (12).

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