Cold header
By adopting a combined structure of sealing sleeve and folding pipeline in the cold heading machine, the problem of oil mist pollution during the use of the cold heading machine is solved, and a safer working environment and cleaner production conditions are achieved.
Patent Information
- Application Number
- CN202510016890.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-05-06
AI Technical Summary
During use, the cold heading machine will produce a large amount of oil mist, affecting the safety of staff and polluting the environment.
A cold heading machine is designed, adopting a combined structure of a sealing sleeve and a folding pipe. The moving plate and the sealing sleeve are driven to move through the moving drive member, so that the oil mist generated during cold heading of the silver contact can be covered by the sealing sleeve and discharged through the folding pipe.
It effectively reduces the pollution in the environment near the cold heading machine, improves the safety of staff, and avoids oil pollution.
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Figure CN119927133A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of cold heading machines, and in particular to a cold heading machine. Background Art
[0002] Cold heading machine is a kind of mechanical equipment specially used for metal cold processing. It is mainly used to process metal materials into parts of various specifications and shapes through plastic deformation at room temperature. Cold heading machine is used for the processing of silver contacts.
[0003] In the related technology, the cold heading machine includes a shell, a cold heading structure is provided on the shell, the cold heading structure includes a cold heading cylinder and a cold heading block, the cold heading block is fixedly connected to the cold heading cylinder, a mounting plate is provided on the shell, the silver contacts are placed on the mounting plate, and the cold heading cylinder drives the cold heading block to punch the silver contacts to realize the processing of the silver contacts.
[0004] Silver contacts need to be coated with cold heading oil when they are stamped to facilitate better stamping and forming of the silver contacts. Since the cold heading block will generate local high temperature during cold heading, the cold heading block will heat and vaporize the cold heading oil, thereby forming a large amount of oil mist in the air, affecting the safety of the workers. Summary of the invention
[0005] In order to improve the problem that a large amount of oil mist is generated during the use of a cold heading machine, the present application provides a cold heading machine.
[0006] The present application provides a cold heading machine, which adopts the following technical solution: A cold heading machine comprises a shell, the shell is provided with a cold heading structure for realizing cold heading of silver contacts, the shell is provided with a mounting plate for stamping silver contacts, the shell is provided with a movable driving member, the movable driving member is provided with a movable plate, the movable plate is provided with a through hole for the cold heading structure to pass through, the movable plate is provided with a sealing sleeve for sealing the mounting plate, the sealing sleeve is provided with a folding pipe, and the folding pipe is used to discharge gas.
[0007] By adopting the above technical solution, the movable plate is driven to move by the mobile driving member, so that the mounting plate is located in the sealing sleeve, and the sealing sleeve and the movable plate can cover the space for cold heading of the silver contacts, so that a large amount of oil mist generated by the silver contacts during cold heading can be located in the sealing sleeve. Since the folding pipe is arranged on the sealing sleeve, the oil mist can be discharged through the folding pipe, so that the oil stain will not pollute the environment near the cold heading machine, thereby avoiding affecting the safety of the staff; the space for cold heading of the silver contacts is covered by the sealing sleeve and the movable plate, so that the sealing sleeve can limit the cold heading forming oil of the silver contacts from splashing due to cold heading, thereby reducing the pollution of the environment near the cold heading machine.
[0008] Optionally, a placement plate is rotatably connected to the shell, the placement plate is located on the moving path of the sealing sleeve, a placement spring is provided on the placement plate, the placement spring drives the placement plate to tilt toward one side, and the mounting plate is arranged on the placement plate; when the sealing sleeve does not abut against the placement plate, one side of the placement plate tilts up, and the silver contact can be detached from the mounting plate.
[0009] By adopting the above technical solution, the placement plate is driven to tilt toward one side by the placement spring, so that the placement plate can throw the silver contact out of the mounting plate, thereby realizing the unloading of the silver contact; because the placement plate is located on the moving path of the sealing sleeve, the sealing sleeve can drive the placement plate to rotate, so that the placement plate is reset, so that the silver contact can be placed on the mounting plate.
[0010] Optionally, a third magnet is provided on the shell, a sliding groove is provided on the mounting plate, a sliding bar is slidably connected in the sliding groove, and a fourth magnet is provided on the shell, the third magnet is used to adsorb the sliding bar to drive the silver contact to separate from the mounting plate, and the fourth magnet is used to adsorb the sliding bar so that it is completely located in the sliding groove; when one side of the placement plate is tilted, the third magnet can adsorb the sliding bar; when the placement plate is laid flat, the fourth magnet can adsorb the sliding bar.
[0011] By adopting the above technical solution, when one side of the placement plate is tilted, the third magnet can absorb the sliding bar and move it, allowing the sliding bar to protrude from the sliding groove, so that the sliding bar drives the silver contact to detach from the mounting plate, so as to facilitate the unloading of the silver contact; when the placement plate is placed flat, the fourth magnet can absorb the sliding bar and move it, allowing the sliding bar to be completely located in the sliding groove, so that the sliding bar can affect the cold heading of the silver contact.
[0012] Optionally, the shell is provided with a receiving groove for placing the placing plate, the placing plate is provided with a placing groove, the mounting plate is located in the placing groove, the placing plate is provided with an operating hole connected to the placing groove, the operating hole penetrates through the mounting plate, and an operating rod is slidably connected in the operating hole; when the placing plate is horizontal, the operating rod abuts against the groove wall of the receiving groove; when one side of the placing plate is tilted, the operating rod can be separated from the operating hole.
[0013] By adopting the above technical solution, the operating rod is slidably connected to the operating hole, and the operating rod is inserted into the placement plate and the mounting plate, so that the operating rod and the mounting plate are fixed to each other, and the possibility of the operating rod detaching from the mounting plate is reduced, so that the placement plate and the mounting plate can be fixed to each other; because the operating rod is in the operating hole, when the placement plate is located in the accommodating groove, the operating rod is limited by the wall of the accommodating groove, so that the operating rod can be stably located in the operating hole. If the operating rod protrudes from the operating hole, the operating rod limits the placement plate from moving into the accommodating groove. At this time, the staff can directly observe that the operating rod is not installed in place, and the staff can drive the operating rod to move, so that the mounting plate and the placement plate can be fixed to each other.
[0014] Optionally, an operating block is slidably connected to the placement plate, and the operating block can be detached from the placement plate at the operating hole. The operating block is provided with a first magnet, and the operating rod is provided with a second magnet. The first magnet attracts the second magnet; when the first magnet attracts the second magnet, the operating block can drive the operating rod to detach from the operating hole.
[0015] By adopting the above technical solution, the first magnet attracts the second magnet, so that the operating block can drive the operating rod to move, so that the operating rod can be detached from the operating hole, so that the staff can take out the operating rod, and the mounting plate and the placement plate can be separated, so that the staff can replace the mounting plate and realize cold heading treatment of different silver contacts.
[0016] Optionally, a protruding spring is provided on the placement plate, a protruding block is provided on the protruding spring, a protruding inclined surface is provided on the protruding block, the distance between the protruding inclined surface and the operating block gradually increases along the direction from the protruding spring to the protruding block, and the protruding inclined surface is located on the moving path of the operating block; when the operating block abuts against the protruding inclined surface, the protruding spring drives the operating block to disengage from the operating hole through the protruding block.
[0017] By adopting the above technical solution, the staff slides the operating block, and the protruding inclined surface is located on the moving path of the operating block, so that the operating block drives the protruding block to move through the protruding inclined surface, and the protruding spring drives the protruding block to move, so that the protruding block drives the operating block to separate from the operating hole, so that the staff can more easily remove the operating rod from the operating hole, thereby allowing the staff to quickly replace the mounting plate.
[0018] Optionally, a feeding drive is provided on the shell, a feeding strip is provided on the feeding drive, a feeding hole for inserting the feeding strip is opened on the sealing sleeve, and the feeding drive drives the feeding strip to be inserted into the feeding hole.
[0019] By adopting the above technical solution, the feeding strip is driven to move by the feeding drive member, and the feeding strip is allowed to pass through the feeding hole, so that the feeding strip drives the silver contact to be inserted into the mounting plate, thereby realizing the feeding of the silver contact and realizing the automatic production of the cold heading machine.
[0020] Optionally, a stop spring is provided on the shell, a stop strip is provided on the stop spring, and the stop spring drives the stop strip to be located on the moving path of the loading strip; when the movable plate is laid flat, the movable plate abuts against the stop strip, and the stop strip is not on the moving path of the loading strip.
[0021] By adopting the above technical solution, when the moving plate is laid flat, the moving plate abuts the stop bar, so that the stop bar is not on the moving path of the loading bar, and the loading bar can load the silver contacts at this time; when the moving plate is tilted, the moving plate does not abut the stop bar, and the stop spring drives the stop bar to move, so that the stop bar is located on the moving path of the loading bar, so that the stop bar can limit the movement of the silver contacts, thereby reducing the possibility that the staff accidentally touches the loading drive part and causes the loading bar to drive the silver contacts into the accommodating groove, so that the silver contacts will not get stuck on the placement plate, allowing the placement plate to rotate, thereby increasing the stability of the rotation of the placement plate.
[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The movable plate is driven to move by the mobile driving member so that the mounting plate is located in the sealing sleeve, and the sealing sleeve and the movable plate can cover the cold heading space of the silver contact, so that a large amount of oil mist generated during the cold heading of the silver contact can be located in the sealing sleeve. Since the folding pipe is arranged on the sealing sleeve, the oil mist can be discharged through the folding pipe, so that the oil will not pollute the environment near the cold heading machine, avoiding affecting the safety of the staff; the cold heading space of the silver contact is sealed and covered by the sealing sleeve and the movable plate, so that the sealing sleeve can limit the cold heading forming oil of the silver contact from splashing due to cold heading, thereby reducing the pollution of the environment near the cold heading machine.
[0023] 2. The operating rod is slidably connected to the operating hole, and the operating rod is inserted into the placement plate and the mounting plate to achieve mutual fixation of the operating rod and the mounting plate, thereby reducing the possibility of the operating rod detaching from the mounting plate, so that the placement plate and the mounting plate can be fixed to each other; since the operating rod is in the operating hole, when the placement plate is located in the accommodating groove, the operating rod is limited by the wall of the accommodating groove, so that the operating rod can be stably located in the operating hole. If the operating rod protrudes from the operating hole, the operating rod limits the placement plate to be located in the accommodating groove. At this time, the staff can directly observe that the operating rod is not installed in place, and the staff can drive the operating rod to move, so that the mounting plate and the placement plate can be fixed to each other. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 is along Figure 1 Sectional view along line AA; Figure 3 is along Figure 1 Sectional view along the midline BB; Figure 4 yes Figure 3 A magnified schematic diagram of part C; Figure 5 yes Figure 2 Enlarged schematic diagram of part D in the figure.
[0025] Figure numerals: 1, housing; 11, vibration plate; 111, feeding channel; 12, feeding drive; 121, feeding bar; 13, unloading hole; 131, third magnet; 14, receiving groove; 141, receiving block; 142, stop spring; 143, stop bar; 144, placement block; 145, stop block; 2, cold heading structure; 21, cold heading cylinder; 22, cold heading block; 3, receiving groove; 31, placement plate; 32, placement spring; 33, placement groove; 331, fourth magnet; 3 4. Operating hole; 341. Operating rod; 342. Second magnet; 35. Operating slot; 351. Operating block; 352. First magnet; 36. Moving slot; 37. Protruding slot; 371. Groove; 372. Protruding spring; 373. Protruding block; 374. Protruding inclined surface; 4. Mounting plate; 41. Forming slot; 42. Sliding slot; 421. Sliding bar; 5. Moving drive member; 51. Moving plate; 511. Perforation; 512. Feeding hole; 52. Sealing sleeve; 53. Folding pipe. DETAILED DESCRIPTION
[0026] The following is combined with Figure 1-5 This application is described in further detail.
[0027] This embodiment discloses a cold heading machine. Figure 1 A cold heading machine includes a housing 1, a vibration plate 11 is fixedly connected to the housing 1, a feeding channel 111 is fixedly connected to the vibration plate 11, and the vibration plate 11 is connected to the feeding channel 111. A feeding drive 12 is fixedly connected to the housing 1, and the feeding drive 12 includes a feeding cylinder, a feeding bar 121 is fixedly connected to the driving shaft of the feeding cylinder, and the feeding cylinder drives the feeding bar 121 to move. The feeding cylinder pushes the silver contact through the feeding bar 121 to feed.
[0028] Reference Figure 2 A cold heading structure 2 is provided on the housing 1, and the cold heading structure 2 includes a cold heading cylinder 21 and a cold heading block 22. The cold heading cylinder 21 is fixedly connected to the housing 1, and the cold heading block 22 is fixedly connected to the driving shaft of the cold heading cylinder 21. A receiving groove 3 is provided on the housing 1, and a placing plate 31 is rotatably connected in the receiving groove 3. A placing spring 32 is fixedly connected to the surface of the placing plate 31 facing the bottom wall of the receiving groove 3, and the placing spring 32 drives the placing plate 31 to tilt toward the side away from the bottom wall of the receiving groove 3, so that the side of the placing plate 31 close to the feeding cylinder tilts.
[0029] Reference Figure 2 and Figure 3The placement plate 31 is provided with a placement groove 33, in which a mounting plate 4 is provided, and a forming groove 41 is provided on the mounting plate 4 for cold heading of the silver contact. The placement plate 31 is provided with an operation hole 34, which penetrates the mounting plate 4. An operation rod 341 is slidably connected in the operation hole 34, and the operation rod 341 can be inserted into the operation holes 34 of the placement plate 31 and the mounting plate 4.
[0030] Reference Figure 4 An operating groove 35 is provided on the hole wall of the operating hole 34, and an operating block 351 is slidably connected in the operating groove 35. A movable groove 36 is provided on the side of the placement plate 31, and the movable groove 36 is for the staff to slide the operating block 351. A first magnet 352 is fixedly connected to the surface of the operating block 351, and a second magnet 342 is fixedly connected to the end surface of the operating rod 341, and the first magnet 352 absorbs the second magnet 342. The length of the operating block 351 is greater than the diameter of the operating rod 341. When the operating block 351 is located in the operating groove 35, the first magnet 352 absorbs the second magnet 342, and the first magnet 352 abuts against the second magnet 342. At this time, the operating block 351 is restricted by the groove wall of the operating groove 35, and the operating block 351 restricts the operating rod 341 from moving in the operating hole 34.
[0031] Reference Figure 4 A protruding groove 37 connected to the operating hole 34 is provided on the side of the placement plate 31, a groove 371 is provided on the bottom wall of the protruding groove 37, a protruding spring 372 is fixedly connected in the groove 371, a protruding block 373 is fixedly connected on the surface of the protruding spring 372 away from the bottom wall of the groove 371, and the protruding spring 372 drives the protruding block 373 to move in a direction away from the bottom wall of the groove 371. A protruding inclined surface 374 is provided on the side of the protruding block 373 facing the operating groove 35, the distance between the protruding inclined surface 374 and the operating groove 35 gradually increases along the direction from the protruding spring 372 to the protruding block 373, and the protruding inclined surface 374 is located on the moving path of the operating block 351.
[0032] Reference Figure 2 and Figure 4 When the placement plate 31 is in a horizontal state, the placement plate 31 is located in the receiving groove 3, and the operating rod 341 abuts against the groove wall of the receiving groove 3. When one side of the placement plate 31 is tilted, the placement plate 31 is not in the receiving groove 3, and the operating rod 341 can be taken out from the operating hole 34.
[0033] Reference Figure 2 and Figure 4The staff slides the operating block 351 to move the operating block 351 from the operating slot 35 to the operating hole 34 and the protruding slot 37. The operating block 351 drives the protruding block 373 to move toward the bottom wall of the protruding slot 37 through the protruding inclined surface 374. At this time, the protruding spring 372 is compressed. The staff releases the operating block 351, and the protruding spring 372 drives the protruding block 373 to move. The protruding block 373 can drive the operating block 351 to protrude from the placement plate 31, so that the staff can drive the operating rod 341 to be removed from the operating hole 34 to realize the replacement of the mounting plate 4.
[0034] Reference Figure 2 and Figure 5 A sliding groove 42 is provided on the bottom wall of the forming groove 41, and a sliding bar 421 is slidably connected in the sliding groove 42, and the sliding bar 421 is made of iron. The sliding bar 421 can be inserted into the forming groove 41, and the sliding bar 421 can be completely located in the sliding groove 42. A feeding hole 13 for the silver contact to fall is provided on the shell 1, and a third magnet 131 is fixedly connected to the hole wall of the feeding hole 13, and the third magnet 131 can absorb the sliding bar 421. A fourth magnet 331 is fixedly connected to the bottom wall of the placement groove 33, and the fourth magnet 331 can absorb the sliding bar 421.
[0035] Reference Figure 2 and Figure 5 When one side of the placement plate 31 is tilted, the magnetic force of the third magnet 131 on the sliding bar 421 is greater than the magnetic force of the fourth magnet 331 on the sliding bar 421, so that the third magnet 131 can absorb the sliding bar 421 to move, and the sliding bar 421 is inserted into the molding groove 41, so that the silver contact is separated from the mounting plate 4, and the silver contact is cut. When the placement plate 31 is placed horizontally, the magnetic force of the fourth magnet 331 on the sliding bar 421 is greater than the magnetic force of the third magnet 131 on the sliding bar 421, so that the fourth magnet 331 can absorb the sliding bar 421 to move, and the sliding bar 421 is completely located in the sliding groove 42.
[0036] Reference Figure 2 The housing 1 is provided with a moving driving member 5, which includes a moving cylinder, which is fixedly connected to the housing 1. A moving plate 51 is fixedly connected to the driving shaft of the moving cylinder, and a blocking sleeve 52 is fixedly connected to the surface of the moving plate 51. The blocking sleeve 52 is arranged in a square shape, and the blocking sleeve 52 can surround the mounting plate 4.
[0037] Reference Figure 2A folding pipe 53 is fixedly connected to the surface of the movable plate 51, and the folding pipe 53 is connected to the blocking sleeve 52, and the folding pipe 53 extends through the housing 1. A fan is arranged inside the folding pipe 53, and the fan is used to drive the oil mist to move from the blocking sleeve 52 to the folding pipe 53. A through hole 511 is provided on the surface of the movable plate 51 for the cold heading block 22 to pass through. When the cold heading block 22 abuts against the mounting plate 4, the cold heading block 22 blocks the through hole 511. A feeding hole 512 is provided on the side of the blocking sleeve 52 for the feeding strip 121 to pass through. When the feeding strip 121 drives the silver contact to feed, the feeding strip 121 blocks the feeding hole 512.
[0038] Reference Figure 2 When the cold heading block 22 performs cold heading treatment on the silver contact, the cold heading forming oil in the silver contact evaporates due to overheating to form oil mist located in the sealing sleeve 52. At this time, the folded pipe 53 can absorb the oil mist and discharge it from the folded pipe 53.
[0039] Reference Figure 2 The housing 1 is provided with a receiving groove 14 connected to the receiving groove 3, and a receiving block 141 is fixedly connected to the groove wall of the receiving groove 14. A plurality of stop springs 142 are fixedly connected to the bottom wall of the receiving groove 14, and a stop bar 143 is provided in the receiving groove 3. The stop bar 143 is fixedly connected to the surface of the stop spring 142 away from the bottom wall of the receiving groove 3, and the stop spring 142 drives the stop bar 143 to abut against the receiving block 141. A placement block 144 is fixedly connected to the surface of the placement plate 31, and the placement block 144 and the placement plate 31 are arranged perpendicular to each other, and the placement block 144 can be located on the moving path of the stop bar 143.
[0040] Reference Figure 1 and Figure 2 A stop block 145 is fixedly connected to the surface of the stop bar 143, and the stop block 145 and the stop bar 143 are arranged perpendicular to each other. The stop block 145 slides in the gap between the receiving block 141 and the housing 1, and the stop block 145 is located on the moving path of the loading bar 121. When the stop bar 143 does not abut the receiving block 141, the surface of the stop block 145 away from the bottom wall of the receiving groove 14 is coplanar with the surface of the receiving block 141. When the stop bar 143 abuts the receiving block 141, the stop block 145 protrudes from the receiving groove 14. At this time, the stop block 145 restricts the loading bar 121 from driving the silver contact to load.
[0041] Reference Figure 1 and Figure 2When the placement plate 31 is placed horizontally, the placement block 144 abuts against the stop bar 143, the stop spring 142 is in a compressed state, and the stop bar 143 does not abut against the receiving block 141. The surface of the stop block 145 away from the bottom wall of the receiving groove 14 is coplanar with the surface of the receiving block 141. At this time, the loading bar 121 can drive the silver contact to load. When one side of the placement plate 31 is tilted, the placement block 144 does not abut against the stop bar 143, the stop spring 142 is in a compressed state, and the stop bar 143 abuts against the receiving block 141. The stop block 145 protrudes from the receiving groove 14. At this time, the loading bar 121 cannot drive the silver contact to load.
[0042] The implementation principle of a cold heading machine in an embodiment of the present application is as follows: the vibration plate 11 transports the silver contact through the feeding channel 111, the moving cylinder drives the moving plate 51 to fall, the blocking sleeve 52 blocks the mounting plate 4, and then the feeding cylinder drives the silver contact to move through the feeding bar 121, so that the silver contact is located on the mounting plate 4, and the cold heading cylinder 21 drives the cold heading block 22 to fall, so that the cold heading block 22 realizes the cold heading treatment of the silver contact, the feeding cylinder drives the feeding bar 121 to separate from the shell 1, the cold heading cylinder 21 drives the cold heading block 22 to lift, and the moving cylinder drives the moving plate 51 to lift. At this time, the placing spring 32 drives the placing plate 31 to rotate, so that one side of the placing plate 31 is tilted, and the third magnet 131 adsorbs the sliding bar 421, so that the sliding bar 421 drives the silver contact to separate from the mounting plate 4, so that the silver contact can fall from the feeding hole 13.
[0043] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0044] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present application should be included in the protection scope of the present application.
Claims
1. A cold heading machine, comprising a housing (1), the housing (1), a cold heading structure (2) for cold heading of silver contacts, the housing (1) being provided with a mounting plate (4) for stamping silver contacts, characterized in that: The shell (1) is provided with a movable driving member (5), the movable driving member (5) is provided with a movable plate (51), the movable plate (51) is provided with a through hole (511) for the cold heading structure (2) to pass through, the movable plate (51) is provided with a sealing sleeve (52) for sealing the mounting plate (4), the sealing sleeve (52) is provided with a folding pipe (53), and the folding pipe (53) is used to discharge gas.
2. A cold heading machine according to claim 1, characterized in that: A placement plate (31) is rotatably connected to the shell (1), the placement plate (31) is located on the moving path of the blocking sleeve (52), a placement spring (32) is provided on the placement plate (31), the placement spring (32) drives the placement plate (31) to tilt toward one side, and the mounting plate (4) is arranged on the placement plate (31); when the blocking sleeve (52) does not abut against the placement plate (31), one side of the placement plate (31) tilts up, and the silver contact can be separated from the mounting plate (4).
3. A cold heading machine according to claim 2, characterized in that: The shell (1) is provided with a third magnet (131), the mounting plate (4) is provided with a sliding groove (42), a sliding bar (421) is slidably connected in the sliding groove (42), the shell (1) is provided with a fourth magnet (331), the third magnet (131) is used to absorb the sliding bar (421) to drive the silver contact to separate from the mounting plate (4), and the fourth magnet (331) is used to absorb the sliding bar (421) to be completely located in the sliding groove (42); when one side of the placement plate (31) is tilted, the third magnet (131) can absorb the sliding bar (421); when the placement plate (31) is placed flat, the fourth magnet (331) can absorb the sliding bar (421).
4. A cold heading machine according to claim 2, characterized in that: The shell (1) is provided with a receiving groove (3) for placing a placing plate (31), the placing plate (31) is provided with a placing groove (33), the mounting plate (4) is located in the placing groove (33), the placing plate (31) is provided with an operating hole (34) connected to the placing groove (33), the operating hole (34) penetrates the mounting plate (4), and an operating rod (341) is slidably connected in the operating hole (34); when the placing plate (31) is horizontal, the operating rod (341) abuts against the groove wall of the receiving groove (3); when one side of the placing plate (31) is tilted, the operating rod (341) can be separated from the operating hole (34).
5. A cold heading machine according to claim 4, characterized in that: An operating block (351) is slidably connected to the placement plate (31); the operating block (351) can be separated from the placement plate (31) at the operating hole (34); a first magnet (352) is provided on the operating block (351); a second magnet (342) is provided on the operating rod (341); the first magnet (352) absorbs the second magnet (342); when the first magnet (352) absorbs the second magnet (342), the operating block (351) can drive the operating rod (341) to be separated from the operating hole (34).
6. A cold heading machine according to claim 5, characterized in that: The placement plate (31) is provided with a protruding spring (372), the protruding spring (372) is provided with a protruding block (373), the protruding block (373) is provided with a protruding inclined surface (374), the distance between the protruding inclined surface (374) and the operating block (351) gradually increases along the direction from the protruding spring (372) to the protruding block (373), and the protruding inclined surface (374) is located on the moving path of the operating block (351); when the operating block (351) abuts against the protruding inclined surface (374), the protruding spring (372) drives the operating block (351) to disengage from the operating hole (34) through the protruding block (373).
7. A cold heading machine according to claim 4, characterized in that: The shell (1) is provided with a feeding drive member (12), the feeding drive member (12) is provided with a feeding strip (121), the blocking sleeve (52) is provided with a feeding hole (512) for inserting the feeding strip (121), and the feeding drive member (12) drives the feeding strip (121) to be inserted into the feeding hole (512).
8. A cold heading machine according to claim 7, characterized in that: The shell (1) is provided with a stop spring (142), and the stop spring (142) is provided with a stop bar (143). The stop spring (142) drives the stop bar (143) to be located on the moving path of the loading bar (121); when the moving plate (51) is laid flat, the moving plate (51) abuts against the stop bar (143), and the stop bar (143) is not located on the moving path of the loading bar (121).