Screw punch forming equipment and method thereof

Abstract

The invention relates to the technical field of screw stamping devices, in particular to screw stamping forming equipment and a method thereof.The screw stamping forming equipment comprises a stamping machine head and a material conveying machine arranged on one side of the stamping machine head, and the material conveying machine comprises a fixing table, a driving device arranged on the outer side of the fixing table and a pair of clamping mechanisms which are parallel left and right and used for clamping iron wires. According to the screw punch forming equipment and the method thereof, the position change of the drawing plate is controlled through the air cylinder, the iron wire can be conveyed to the outer side of the mold after being cut by the cutter, then cutting and feeding of the iron wire are integrated, the occupied area of the equipment is reduced, and meanwhile, the continuity of screw punch operation is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of screw punching devices, and in particular to a screw punching forming device and a method thereof. Background Art

[0002] Screw stamping equipment is a kind of efficient and precise metal processing equipment, which is mainly used to process metal sheets into screws of various specifications through stamping process. The equipment adopts advanced hydraulic system and mold design to ensure the dimensional accuracy and surface quality of the screws.

[0003] The patent with application number 202020906020.6 discloses an easy-to-use screw punch, including: a punch body; an operating table, the operating table is located on the punch body; a cavity, the cavity is opened on the operating table; two sliding columns, both sliding columns are fixedly installed in the cavity; a push plate, the push plate sliding sleeve is arranged on the two sliding columns; two connecting rods, both connecting rods are fixedly installed on the top of the push plate, and the top ends of the two connecting rods extend out of the cavity; a push strip, the push strip is fixedly installed on the top ends of the two connecting rods.

[0004] However, traditional stamping equipment usually adopts a separate operation process, that is, wire feeding, cutting and stamping are completed step by step by different devices. This decentralized design leads to poor continuity of the production line, large equipment footprint, and time delays in the connection between each process, which significantly reduces production efficiency. For example, after completing a stamping, the traditional cold heading machine needs to wait for the wire feeder to re-deliver and cut the wire, forcing the stamping head to perform an invalid reciprocating motion, resulting in energy waste and extended production cycle.

[0005] In view of this, we propose a screw stamping forming device and method. Summary of the invention

[0006] The object of the present invention is to provide a screw stamping forming device and method thereof to solve the problems raised in the above background technology.

[0007] To achieve the above object, on the one hand, the present invention provides the following technical solutions: A screw stamping and forming device comprises a stamping machine head and a material transporter arranged on one side of the stamping machine head; The material conveyor comprises a fixed platform, a driving device arranged outside the fixed platform, and a pair of left and right parallel clamping mechanisms for clamping the iron wire; The fixing platform includes a bending plate, an outer convex plate arranged on the outer side wall of the bending plate, and a mold arranged at the center of the outer side wall of the outer convex plate, and the outer wall of the outer convex plate is provided with feed holes for the iron wire to pass through on both sides of the mold; The driving device comprises a movable plate capable of moving outside the outer convex plate, a draw plate arranged outside the movable plate, abutment blocks arranged on both sides of the convex plate at the bottom of the draw plate, a pair of parallel cutters and a limit block that moves as the position of the draw plate changes, and a convex rod is integrally formed on the top surface of the cutter; The top surface of the movable plate is provided with two plate surface grooves for moving the convex plate at the bottom of the pull-out plate. A pair of parallel guide grooves are provided on the top surface of the pull-out plate. When the pull-out plate is displaced, the contact position between the guide groove and the convex rod is changed, thereby driving the cutter to cut the iron wire fed from the feed hole into a length suitable for the screw. When the pull-out plate moves to the other end of the plate surface groove, the position of the limit block is changed through the abutment block, and then the movable plate can be driven to displace through the pull-out plate, and the iron wire can be sent to the outside of the mold.

[0008] In the technical solution of the present invention, a sliding groove running through from top to bottom is provided on the top horizontal plate of the bending plate, and a plurality of regularly distributed limiting holes are provided on the outside of the sliding groove. The outer convex plate is welded and fixed to the outer wall of the bending plate, and a pair of symmetrically arranged limiting grooves are provided on the outer wall of the outer convex plate.

[0009] In the technical solution of the present invention, the mold is fixedly connected to the outer side wall of the outer convex plate by bolts, and reinforcing plates are welded and fixed to the side walls at both ends of the outer convex plate.

[0010] In the technical solution of the present invention, a cutting groove connected to the plate surface groove and the outer side wall is opened inside the movable plate, a plurality of placement grooves whose number is the same as the limiting holes and whose sizes are matched, a through hole is opened between the plate surface groove and the placement groove, and a bent convex strip matched with the size of the limiting groove is integrally formed on the outer side wall of the movable plate.

[0011] In the technical solution of the present invention, the driving device also includes a cylinder fixedly connected to the top surface of the bending plate by bolts, the end of the telescopic rod of the cylinder is clamped and fixed to the bending plate at the top of the pull-out plate, the bottom end convex plates on both sides of the pull-out plate are respectively rotatably connected to the inside of the two plate surface grooves, the stop block is welded and fixed to the pull-out plate, the cutter is slidably connected to the inside of the cutting groove, and the end of the convex rod extends to the inside of the guide groove.

[0012] In the technical solution of the present invention, the limit block is slidably connected to the inside of the placement groove, and a docking groove corresponding to the position of the through hole is opened on the outer wall of the limit block. A plurality of first springs are welded at the end of the limit block, and the other end of the first spring is welded and fixed to the inner groove wall of the placement groove. When the pull-out plate is inserted into the through hole on one side, the stop block contacts the groove wall of the docking groove, thereby driving the limit block to retract into the inside of the placement groove.

[0013] In the technical solution of the present invention, the clamping mechanism includes a placement frame fixedly connected to the outer wall of the movable plate by bolts, a movable plate arranged on the inner side of the placement frame, a connecting plate rotatably connected to both ends of the movable plate, a telescopic rod arranged under the movable plate, an outward rod moving with the movable plate, a second spring arranged on the outer side of the connecting plate, and a pair of symmetrically arranged clamping parts.

[0014] In the technical solution of the present invention, the upper and lower ends of the telescopic rod are respectively clamped and fixed on the outer side wall of the movable plate and the inner side wall of the placement frame, and the extension rod is welded and fixed on the outer side wall of the movable plate.

[0015] In the technical solution of the present invention, the clamping part includes a clamping rod, a limiting rod welded and fixed to the protruding rod at one end of the clamping rod, a rubber pad adhered to the semicircular notch at the other end of the clamping rod, and an outer frame welded and fixed to the protruding rod at one end of the clamping rod. The limiting rod is slidably connected to the outer wall of the placement frame, one end of the second spring is welded and fixed to the inner wall of the placement frame, and the other end is welded and fixed to the protruding rod at one end of the clamping rod.

[0016] On the other hand, the present invention also provides a screw stamping method, using the above-mentioned screw stamping equipment, comprising the following steps: S1. First, the two processed rolls of iron wire are connected to the two feed holes on the outer convex plate through the wire feeders, and one of the wire feeders is started to feed the iron wire into the feed hole on the right side; S2. When the length of the iron wire fed meets the requirements for preparing the screw, the running wire feeder is stopped. At this time, the iron wire is located inside the pair of rubber pads, and the elastic force generated by the second spring is converted into a force acting on the iron wire through the clamping rod, thereby ensuring the overall stability of the iron wire; S3, then, the cylinder is started to drive the pull-out plate to move to the left side of the plate surface groove. During this process, the contact position between the protruding rod and the guide groove wall changes, and the cutter is driven to cut the wire and then retract it into the cutting groove; S4. At this time, the abutment blocks on the left side of the convex plate at the bottom end of the pull-out plate are inserted into the interior of the docking groove on the limit block through the through hole, and the right-angle trapezoidal design of the abutment blocks drives the position of the limit blocks to shrink into the interior of the placement groove, so that the pull-out plate can drive the movable plate to move to the left together; S5. Subsequently, when the movable plate moves to the leftmost side of the outer convex plate, the clamping part on the right side delivers the cut iron wire to the outside of the mold, and starts the punching head to punch the cut iron wire into the inside of the mold; S6. During this process, the punching end of the punch head will contact the extension rod first, which will drive the telescopic rod to contract, thereby changing the inclination angle of the connecting plate, thereby squeezing the second spring and separating the pair of clamping parts from each other, thereby ensuring full contact between the punching end and the mold; S7. Afterwards, when the punching end of the punch head leaves the die, the processed iron wire will also be ejected by the ejector in the die. At this time, another wire feeder is started to feed the iron wire from the feed hole on the left into the inside of the clamping mechanism on the left; S8. Then, the telescopic rod of the cylinder is controlled to retract, and after the positions of the pull-out plate and the movable plate are restored to the initial state, the iron wire located inside the left clamping mechanism is punched again by the punch head. Subsequently, the punched iron wire is sent to the thread rolling machine to complete the preparation of the screw.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The screw stamping forming equipment and method thereof control the change of the position of the pull-out plate through a cylinder, and can send the iron wire to the outside of the mold after the iron wire is cut by a cutter, thereby integrating the cutting of the iron wire with the feeding, reducing the floor space of the equipment while ensuring the continuity of the screw stamping operation.

[0018] 2. The screw stamping forming equipment and method thereof cooperate with the double wire feeder through the feed holes symmetrically arranged on both sides of the outer convex plate to realize alternating feeding of the left and right workstations. When the iron wire on one side is completed by stamping, the feeding on the other side has been completed in advance, and the cutting and feeding are then carried out synchronously, thereby ensuring that a screw is effectively formed in each stroke of the punching head, eliminating the idle waiting problem of traditional equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the material conveyor in the present invention.

[0021] Figure 3 It is a structural schematic diagram of the fixed platform in the present invention.

[0022] Figure 4 It is a partial structural schematic diagram of the fixed platform in the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the driving device in the present invention.

[0024] Figure 6 This is one of the schematic cross-sectional views of the structure of the movable plate in the present invention.

[0025] Figure 7 This is the second schematic cross-sectional view of the structure of the movable plate in the present invention.

[0026] Figure 8 It is a partial structural schematic diagram of the driving device in the present invention.

[0027] Fig. 9It is a partial structural top view of the driving device in the present invention.

[0028] Fig.10 It is a schematic diagram of the structure of the cutter in the present invention.

[0029] Fig.11 It is a partial structural schematic diagram of the driving device in the present invention.

[0030] Fig.12 It is a structural schematic diagram of the clamping mechanism in the present invention.

[0031] Fig.13 It is a structural schematic diagram of the clamping part in the present invention.

[0032] Description of reference numerals: 100. Punch head; 200, material transporter; 210, fixed platform; 211, bending plate; 2110, slide; 2111, limit hole; 212, outer convex plate; 2120, limit groove; 2121, feed hole; 213, mold; 214, reinforcement plate; 220, drive device; 221, moving plate; 2210, plate groove; 2211, cutting groove; 2212, placement groove; 2213, through hole; 2214, bending convex strip; 222, pull-out plate; 2220, guide To the groove; 223, the block; 224, the cutter; 2240, the protruding rod; 225, the limit block; 2250, the docking groove; 226, the first spring; 227, the cylinder; 230, the clamping mechanism; 231, the placement frame; 232, the movable plate; 233, the connecting plate; 234, the telescopic rod; 235, the extension rod; 236, the second spring; 237, the clamping part; 2370, the clamping rod; 2371, the limit rod; 2372, the rubber pad; 2373, the coat rack. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 13 As shown, this embodiment provides a technical solution: A screw stamping and forming device comprises a stamping head 100 and a material transporter 200 arranged on one side of the stamping head 100; In this embodiment, Figure 2-Figure 4 As shown, the material conveyor 200 includes a fixed platform 210, a driving device 220 disposed outside the fixed platform 210, and a pair of left and right parallel clamping mechanisms 230 for clamping wires.

[0035] Specifically, the fixed table 210 includes a bending plate 211, an outer convex plate 212 arranged on the outer wall of the bending plate 211, and a mold 213 arranged at the center position of the outer wall of the outer convex plate 212. The outer wall of the outer convex plate 212 is provided with feed holes 2121 for iron wire to pass through on both sides of the mold 213.

[0036] Furthermore, a sliding groove 2110 that passes through from top to bottom is opened on the top horizontal plate of the bending plate 211, and a plurality of regularly distributed limiting holes 2111 are opened on the outside of the sliding groove 2110 on the top horizontal plate of the bending plate 211. The outer convex plate 212 is welded and fixed to the outer wall of the bending plate 211, and a pair of symmetrically arranged limiting grooves 2120 are opened on the outer wall of the outer convex plate 212.

[0037] Furthermore, the mold 213 is fixedly connected to the outer side wall of the outer convex plate 212 by bolts, and reinforcing plates 214 are welded and fixed to the side walls at both ends of the outer convex plate 212 .

[0038] Furthermore, the bending plate 211 is used to ensure the strength of the overall structure of the fixed platform 210, the slide groove 2110 and the limit groove 2120 on the outer convex plate 212 are used to limit the moving range of the internal structure of the driving device 220, and the feed hole 2121 is used to provide a range for the passage of the iron wire. The mold 213 allows the iron wire to pass through the punch head 100 to punch and form the initial shape of the screw.

[0039] In this embodiment, Figure 5-Figure 7 As shown, the driving device 220 includes a movable plate 221 capable of moving on the outside of the outer convex plate 212, a pull-out plate 222 arranged on the outside of the movable plate 221, a stop block 223 arranged on both sides of the convex plate at the bottom of the pull-out plate 222, a pair of parallel cutting knives 224 and a limit block 225 that moves as the position of the pull-out plate 222 changes, and a convex rod 2240 is integrally formed on the top surface of the cutter 224.

[0040] Specifically, a cutting groove 2211 connected to the plate surface groove 2210 and the outer wall is provided inside the movable plate 221, a plurality of placement grooves 2212 whose number is the same as that of the limiting holes 2111 and whose sizes are matched, a through hole 2213 is provided between the plate surface groove 2210 and the placement groove 2212, and a bent ridge 2214 matched with the size of the limiting groove 2120 is integrally formed on the outer wall of the movable plate 221.

[0041] Furthermore, two plate grooves 2210 are provided on the top surface of the movable plate 221 for moving the bottom convex plate of the pull-out plate 222, and a pair of parallel guide grooves 2220 are provided on the top surface of the pull-out plate 222. The cutting groove 2211 is used to provide a moving range for the cutter 224, and the placement groove 2212 is used to provide a moving range for the limit block 225. The through hole 2213 allows the stop block 223 to enter the interior of the placement groove 2212, and the bent convex strip 2214 is used to ensure the stability of the movement of the movable plate 221.

[0042] In this embodiment, Figure 5-Figure 11 As shown, the driving device 220 also includes a cylinder 227 fixedly connected to the top surface of the bending plate 211 by bolts, the end of the telescopic rod of the cylinder 227 is clamped and fixed to the bending plate at the top of the pull-out plate 222, the bottom end convex plates on both sides of the pull-out plate 222 are respectively rotatably connected to the inside of the two plate surface grooves 2210, the stop block 223 is welded and fixed to the pull-out plate 222, the cutter 224 is slidably connected to the inside of the cutting groove 2211, and the end of the convex rod 2240 extends to the inside of the guide groove 2220.

[0043] Specifically, the limit block 225 is slidably connected to the inside of the placement groove 2212, and a docking groove 2250 corresponding to the position of the through hole 2213 is opened on the outer wall of the limit block 225. A plurality of first springs 226 are welded at the end of the limit block 225, and the other end of the first spring 226 is welded and fixed to the inner groove wall of the placement groove 2212. When the pull-out plate 222 is inserted into the through hole 2213 on one side, the block 223 contacts the groove wall of the docking groove 2250, thereby driving the limit block 225 to retract into the interior of the placement groove 2212.

[0044] Furthermore, the cylinder 227 is started to drive the pull-out plate 222 to move. When the pull-out plate 222 is displaced, the contact position between the guide groove 2220 and the protruding rod 2240 is changed, thereby driving the cutter 224 to cut the iron wire fed from the feed hole 2121 into a length suitable for the screw. When the pull-out plate 222 moves to the other end of the plate groove 2210, the position of the limit block 225 is changed through the stop block 223, and then the movable plate 221 can be displaced through the pull-out plate 222, and the iron wire is sent to the outside of the mold 213. The first spring 226 applies an outward force to the limit block 225 through its own elastic force, so that the end of the limit block 225 can extend to the inside of the limit hole 2111, thereby limiting the movement of the position of the movable plate 221.

[0045] In this embodiment, Figure 12-13As shown, the clamping mechanism 230 includes a placement frame 231 fixedly connected to the outer wall of the movable plate 221 by bolts, a movable plate 232 arranged on the inner side of the placement frame 231, a connecting plate 233 rotatably connected to both ends of the movable plate 232, a telescopic rod 234 arranged under the movable plate 232, an extension rod 235 that moves with the movable plate 232, a second spring 236 arranged on the outer side of the connecting plate 233, and a pair of symmetrically arranged clamping parts 237.

[0046] Specifically, the upper and lower ends of the telescopic rod 234 are respectively clamped and fixed on the outer wall of the movable plate 232 and the inner wall of the placement frame 231 , and the extension rod 235 is welded and fixed on the outer wall of the movable plate 232 .

[0047] Furthermore, the clamping part 237 includes a clamping rod 2370, a limiting rod 2371 welded and fixed to the protruding rod at one end of the clamping rod 2370, a rubber pad 2372 adhered to the semicircular notch at the other end of the clamping rod 2370, and an outer frame 2373 welded and fixed to the protruding rod at one end of the clamping rod 2370, the limiting rod 2371 is slidably connected to the outer wall of the placement frame 231, one end of the second spring 236 is welded and fixed to the inner wall of the placement frame 231, and the other end is welded and fixed to the protruding rod at one end of the clamping rod 2370.

[0048] Furthermore, when the length of the iron wire fed through the feed hole 2121 meets the requirements for preparing the screws, the running wire feeder is stopped. At this time, the iron wire is located inside a pair of rubber pads 2372, and the elastic force generated by the second spring 236 will be converted into a force on the iron wire through the clamping rod 2370 to ensure the overall stability of the iron wire. When the punch head 100 is working, the punching end of the punch head 100 will contact the outward rod 235 first, thereby driving the telescopic rod 234 to contract, and then the inclination angle of the connecting plate 233 will change, thereby squeezing the second spring 236, allowing a pair of clamping parts 237 to separate from each other, thereby ensuring complete contact between the punching end and the mold 213. At this time, the limit rod 2371 will slide on the side wall of the placement frame 231 to limit the overall movement direction of the clamping part 237.

[0049] The present invention also provides a screw stamping method, using the above-mentioned screw stamping equipment, comprising the following steps: S1. First, two processed rolls of iron wire are connected to the two feed holes 2121 on the outer convex plate 212 through wire feeders, and one of the wire feeders is started to feed the iron wire into the feed hole 2121 on the right side; S2. When the length of the wire fed meets the requirement for preparing the screw, the running wire feeder is stopped. At this time, the wire is located inside the pair of rubber pads 2372, and the elastic force generated by the second spring 236 is converted into a force acting on the wire through the clamping rod 2370 to ensure the overall stability of the wire. S3, then, the cylinder 227 is started to drive the pull-out plate 222 to move to the left side of the plate surface groove 2210. During this process, the contact position between the protruding rod 2240 and the groove wall of the guide groove 2220 changes, and the cutter 224 is driven to cut the wire and then retract into the inside of the cutting groove 2211; S4. At this time, the abutment block 223 on the left side of the convex plate at the bottom end of the pull-out plate 222 is inserted into the interior of the docking groove 2250 on the limit block 225 through the through hole 2213. The right-angle trapezoidal design of the abutment block 223 drives the position of the limit block 225 to shrink into the interior of the placement groove 2212, and then the pull-out plate 222 can drive the movable plate 221 to move to the left together; S5. Subsequently, when the movable plate 221 moves to the leftmost side of the outer convex plate 212, the clamping part 237 on the right side delivers the cut iron wire to the outside of the die 213, and starts the punching head 100 to punch the cut iron wire into the inside of the die 213; S6. During this process, the punching end of the punch head 100 will contact the extension rod 235 first, and drive the telescopic rod 234 to contract, thereby changing the inclination angle of the connecting plate 233, thereby squeezing the second spring 236, and separating the pair of clamping parts 237 from each other, thereby ensuring full contact between the punching end and the die 213; S7. Afterwards, when the punching end of the punch head 100 leaves the die 213, the processed iron wire will also be ejected by the ejector pin in the die 213. At this time, another wire feeder is started to feed the iron wire from the feed hole 2121 on the left into the inside of the clamping mechanism 230 on the left; S8. Then, the telescopic rod of the air cylinder 227 is controlled to retract, and after the positions of the pull-out plate 222 and the movable plate 221 are restored to the initial state, the iron wire inside the left clamping mechanism 230 is punched again by the punch head 100. Subsequently, the punched iron wire is sent to the thread rolling machine to complete the preparation of the screw.

[0050] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the specification and its equivalents.

Claims

1. A screw stamping and forming device, comprising a stamping head and a material transporter arranged on one side of the stamping head; Features: The material conveyor comprises a fixed platform, a driving device arranged outside the fixed platform, and a pair of left and right parallel clamping mechanisms for clamping the iron wire; The fixing platform includes a bending plate, an outer convex plate arranged on the outer side wall of the bending plate, and a mold arranged at the center of the outer side wall of the outer convex plate, and the outer wall of the outer convex plate is provided with feed holes for the iron wire to pass through on both sides of the mold; The driving device comprises a movable plate capable of moving outside the outer convex plate, a draw plate arranged outside the movable plate, abutment blocks arranged on both sides of the convex plate at the bottom of the draw plate, a pair of parallel cutters and a limit block that moves as the position of the draw plate changes, and a convex rod is integrally formed on the top surface of the cutter; The top surface of the movable plate is provided with two plate surface grooves for moving the convex plate at the bottom of the pull-out plate. A pair of parallel guide grooves are provided on the top surface of the pull-out plate. When the pull-out plate is displaced, the contact position between the guide groove and the convex rod is changed, thereby driving the cutter to cut the iron wire fed from the feed hole into a length suitable for the screw. When the pull-out plate moves to the other end of the plate surface groove, the position of the limit block is changed through the abutment block, and then the movable plate can be driven to displace through the pull-out plate, and the iron wire can be sent to the outside of the mold.

2. The screw stamping and forming equipment according to claim 1, characterized in that: The top horizontal plate of the bending plate is provided with a sliding groove which passes through from top to bottom, and the top horizontal plate of the bending plate is provided with a plurality of regularly distributed limiting holes on the outside of the sliding groove. The outer convex plate is welded and fixed to the outer side wall of the bending plate, and a pair of symmetrically arranged limiting grooves are provided on the outer side wall of the outer convex plate.

3. The screw stamping and forming equipment according to claim 2, characterized in that: The mold is fixedly connected to the outer side wall of the outer convex plate by bolts, and reinforcing plates are welded and fixed to the side walls at both ends of the outer convex plate.

4. The screw stamping and forming equipment according to claim 3, characterized in that: The movable plate has a cutting groove inside that is connected to the plate surface groove and the outer side wall, a plurality of placement grooves whose number is the same as the limiting holes and whose sizes are matched, a through hole is provided between the plate surface groove and the placement groove, and a bent convex strip matched to the size of the limiting groove is integrally formed on the outer side wall of the movable plate.

5. The screw stamping and forming equipment according to claim 4, characterized in that: The driving device also includes a cylinder fixedly connected to the top surface of the bending plate by bolts, the end of the telescopic rod of the cylinder is clamped and fixed to the bending plate on the top of the pull-out plate, the bottom end convex plates on both sides of the pull-out plate are respectively rotatably connected to the inside of the two plate surface grooves, the stop block is welded and fixed to the pull-out plate, the cutter is slidably connected to the inside of the cutting groove, and the end of the convex rod extends to the inside of the guide groove.

6. The screw stamping and forming equipment according to claim 5, characterized in that: The limit block is slidably connected to the inside of the placement groove, and a docking groove corresponding to the position of the through hole is opened on the outer wall of the limit block. A plurality of first springs are welded at the end of the limit block, and the other end of the first spring is welded and fixed to the inner groove wall of the placement groove. When the pull-out plate is inserted into the through hole on one side, the block contacts the groove wall of the docking groove, thereby driving the limit block to retract into the inside of the placement groove.

7. The screw stamping and forming equipment according to claim 6, characterized in that: The clamping mechanism includes a placement frame fixedly connected to the outer side wall of the movable plate by bolts, a movable plate arranged inside the placement frame, a connecting plate rotatably connected to both ends of the movable plate, a telescopic rod arranged below the movable plate, an outward extension rod moving with the movable plate, a second spring arranged outside the connecting plate, and a pair of symmetrically arranged clamping parts.

8. The screw stamping and forming equipment according to claim 7, characterized in that: The upper and lower ends of the telescopic rod are respectively clamped and fixed on the outer side wall of the movable plate and the inner side wall of the placement frame, and the outrigger rod is welded and fixed on the outer side wall of the movable plate.

9. The screw stamping and forming equipment according to claim 8, characterized in that: The clamping part includes a clamping rod, a limiting rod welded and fixed to a convex rod at one end of the clamping rod, a rubber pad adhered to a semicircular notch at the other end of the clamping rod, and an outer frame welded and fixed to a convex rod at one end of the clamping rod. The limiting rod is slidably connected to the outer wall of the placement frame, one end of the second spring is welded and fixed to the inner wall of the placement frame, and the other end is welded and fixed to the convex rod at one end of the clamping rod.

10. A screw stamping method, using the screw stamping equipment according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, the two processed rolls of iron wire are connected to the two feed holes on the outer convex plate through the wire feeders, and one of the wire feeders is started to feed the iron wire into the feed hole on the right side; S2. When the length of the iron wire fed meets the requirements for preparing the screw, the running wire feeder is stopped. At this time, the iron wire is located inside the pair of rubber pads, and the elastic force generated by the second spring is converted into a force acting on the iron wire through the clamping rod, thereby ensuring the overall stability of the iron wire; S3, then, the cylinder is started to drive the pull-out plate to move to the left side of the plate surface groove. During this process, the contact position between the protruding rod and the guide groove wall changes, and the cutter is driven to cut the wire and then retract it into the cutting groove; S4. At this time, the abutment blocks on the left side of the convex plate at the bottom end of the pull-out plate are inserted into the interior of the docking groove on the limit block through the through hole, and the right-angle trapezoidal design of the abutment blocks drives the position of the limit blocks to shrink into the interior of the placement groove, so that the pull-out plate can drive the movable plate to move to the left together; S5. Subsequently, when the movable plate moves to the leftmost side of the outer convex plate, the clamping part on the right side delivers the cut iron wire to the outside of the mold, and starts the punching head to punch the cut iron wire into the inside of the mold; S6. During this process, the punching end of the punch head will contact the extension rod first, which will drive the telescopic rod to contract, thereby changing the inclination angle of the connecting plate, thereby squeezing the second spring and separating the pair of clamping parts from each other, thereby ensuring full contact between the punching end and the mold; S7. Afterwards, when the punching end of the punch head leaves the die, the processed iron wire will also be ejected by the ejector in the die. At this time, another wire feeder is started to feed the iron wire from the feed hole on the left into the inside of the clamping mechanism on the left; S8. Then, the telescopic rod of the cylinder is controlled to retract, and after the positions of the pull-out plate and the movable plate are restored to the initial state, the iron wire located inside the left clamping mechanism is punched again by the punch head. Subsequently, the punched iron wire is sent to the thread rolling machine to complete the preparation of the screw.

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