Screw cold heading device and cold heading process thereof

Abstract

The invention relates to a screw cold heading device and a cold heading process thereof. The screw cold heading device comprises a supporting plate. Synchronous wheels are oppositely arranged on the left side and the right side of the front end of the supporting plate, a synchronous belt is arranged on the outer sides of the two sets of synchronous wheels, the synchronous belt is of a runway-shaped structure, and mounting blocks are distributed on the periphery of the synchronous belt. According to the screw cold heading device and the cold heading process thereof, the conveying and cutting-off integrated mechanism is arranged, a horizontal wheel is used for horizontally clamping and positioning a wire, a vertical wheel is attached to the front end wall and the rear end wall of the wire for extrusion, and therefore the wire is straightened; according to the screw cold heading machine, corresponding shearing operation in the wire conveying process can be guaranteed, driving elements are reduced, conveying and shearing can be automatically carried out, the wire conveying efficiency is improved, and the screw cold heading efficiency is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of cold heading equipment, in particular to a screw cold heading device and a cold heading process thereof. Background Art

[0002] As one of the most commonly used standard parts, the demand for screws remains high. As the main equipment for screw production, the cold heading machine has higher and higher requirements.

[0003] For example, the document with publication number CN116408417B discloses a self-tapping screw cold heading device and its cold heading process. The invention uses a material transfer mechanism to carry metal profiles through various stamping stations of a stamping mechanism for stamping in sequence, so that the metal profiles do not need to be repeatedly pushed out and loaded during the switching of the stamping stations, making the processing process more consistent and the processing efficiency higher.

[0004] However, during the use of the above-mentioned device, the wire feeding mechanism and the cutting mechanism are designed to be separated, which not only requires the use of two sets of driving devices to drive the wire feeding mechanism and the cutting mechanism, but also requires one set of mechanisms to stop moving before the cutting mechanism can start working. This will cause a problem of linkage gap between the two sets of mechanisms, which will affect the cold heading efficiency of the screws. Summary of the invention

[0005] 1. Technical problems solved In order to solve the above technical problems, the present invention provides a screw cold heading device and a cold heading process thereof.

[0006] (II) Technical solution Based on this, according to one aspect of the present invention, a screw cold heading device is provided, comprising a support plate; synchronous wheels are arranged on the left and right sides of the front end of the support plate, and synchronous belts are arranged on the outer sides of the two groups of synchronous wheels, the synchronous belts are in a runway-shaped structure, and mounting blocks are distributed around the synchronous belts; the mounting block is fixed to the rear end of the sleeve, and a conveying and cutting integrated mechanism is installed at the rear end of the support plate, and the front end of the support plate is fixed with the mounting plate; the conveying and cutting integrated mechanism comprises a bottom plate, a straightening mechanism, a wire, a guide wheel, a guide seat, a feed cutting mechanism, and a receiving block, the front end of the receiving block is fixed to the support plate, the feed cutting mechanism is fixed to the rear end of the receiving block, the feed cutting mechanism is in contact with the bottom of the wire, the wire passes through the middle of the guide seat, the bottom of the guide seat is fixed to the bottom plate, and guide wheels are arranged on the left and right sides of the top of the bottom plate, the guide wheels are slidably matched with the outer wall of the wire, the wire passes through the middle of the straightening mechanism, and the bottom of the straightening mechanism is fixedly connected to the bottom plate.

[0007] Preferably, the mounting plate is fixedly connected to the front end of the blocking plate, the mounting plate is fixed to the bottom of the receiving seat, a punch is provided at the rear end of the receiving seat, punches are equidistantly distributed at the rear end of the punch, and the mounting plate is fixed to the bottom of the positioning mechanism.

[0008] Preferably, the feed and cutting mechanism includes a movable seat, a rotating shaft, a feed wheel, a servo motor, a vertical rod, a top support wheel, and a shearing mechanism; the receiving block is fixed to the front end of the movable seat, the rotating shaft is movably connected to the inner side of the movable seat, the rotating shaft is transmission-connected to the middle part of the feed wheel, the rotating shaft is transmission-connected to the output end of the servo motor, the bottom of the vertical rod is fixed to the movable seat, the vertical rod is fixed to the middle part of the top support wheel, and the shearing mechanism is embedded in the top of the feed wheel.

[0009] Preferably, the middle portion of the feed wheel is concave, two groups of movable seats are provided, and vertical rods and top support wheels are provided on the tops of the movable seats.

[0010] Preferably, the shearing mechanism includes a swinging plate, a movable shaft, a shearing head, a connecting seat, a round rod, and a compression spring. The swinging plate is movably connected to the feed wheel by a movable shaft, the swinging plate is fixed to the bottom of the shearing head, connecting seats are relatively arranged on the left and right sides of the feed wheel, the round rod is fixed to the middle part of the connecting seat, and the swinging plate and the round rod are slidably matched.

[0011] Preferably, there are two groups of swing plates, and the swing plates are symmetrically arranged with each other. Compression springs are arranged in the middle of the two groups of swing plates and are respectively fixed to the front and rear sides of the compression springs. The round rod runs through the middle of the compression spring.

[0012] Preferably, the positioning mechanism includes a square frame, a cylinder, a movable plate, a clamping block, a damping block, and a positioning seat. The bottom of the square frame is fixed to the mounting plate, a cylinder is arranged on the inner side of the right end of the square frame, the top of the cylinder is fixed to the movable plate, and the movable plate is slidably matched with the inner side of the square frame, clamping blocks are equidistantly distributed on the bottom of the movable plate, a positioning seat is installed on the bottom of the clamping block, and damping blocks are equidistantly distributed at the connection between the positioning seat and the clamping block.

[0013] Preferably, the straightening mechanism includes an installation frame, a connecting frame, an electric push rod 1, a push block, a connecting rod, a horizontal wheel, a return spring, a guide frame, and a vertical positioning mechanism. The bottom of the installation frame is fixed to the bottom plate, the left end of the installation frame is fixed to the connecting frame, the connecting frame is fixedly connected to the left end of the electric push rod 1, the right end of the electric push rod 1 is provided with a push block, the push block is movably connected to the left end of the connecting rod, the connecting rod is movably connected to the front end of the horizontal wheel, the front end of the horizontal wheel is provided with a protrusion, and the protrusion is slidably matched with the inner side of the guide frame, the protrusion is fixed to the bottom of the return spring, and the top of the return spring is fixedly connected to the guide frame, and the middle part of the installation frame is provided with a vertical positioning mechanism.

[0014] Preferably, the vertical positioning mechanism includes a horizontal plate, an electric push rod 2, a slider, a swing arm, a connecting arm, and a vertical wheel. The horizontal plate is fixed to the top of the mounting frame, the horizontal plate is fixed to the bottom of the electric push rod 2, the electric push rod 2 is fixed to the front end of the slider, and convex rods are relatively arranged on the left and right sides of the top of the slider, the convex rods are slidably matched with the right end of the swing arm, the swing arm is movably connected to the upper left end of the horizontal plate by a rotating shaft, the rotating shaft is transmission-connected to the upper right end of the connecting arm, and the connecting arm is movably connected to the middle part of the vertical wheel.

[0015] According to another aspect of the present invention, a screw cold heading process is provided, the process being as follows: Step S1: During operation, the feeding and cutting mechanism straightens the wire, feeds and cuts it into metal profiles and puts them into the sleeve; S2: The sleeve carries the metal profile in the positioning mechanism for positioning, and then passes through each punch station of the punching machine in turn, and the punch punches the screw head; S3: Finally, the screw preform with the screw head completed can be discharged.

[0016] (III) Beneficial effects Compared with the prior art, the present invention provides a screw cold heading device and a cold heading process thereof, which have the following beneficial effects: The screw cold heading device and its cold heading process are provided with an integrated conveying and cutting mechanism. The horizontal wheels clamp and position the wires horizontally, and the vertical wheels fit and extrude the front and rear end walls of the wires, thereby straightening the wires. At the same time, the wire feeding mechanism and the cutting mechanism are designed together, which can ensure that the shearing operation is performed accordingly during the wire conveying process, and reduce the driving elements, so that the conveying and shearing can be performed automatically, thereby increasing the efficiency of wire feeding and further increasing the efficiency of screw cold heading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the positioning mechanism of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the integrated conveying and cutting mechanism of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the feeding and cutting mechanism of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the shearing mechanism of the present invention; Figure 7 It is a schematic diagram of the internal structure of the straightening mechanism of the present invention; Figure 8 It is a schematic diagram of the internal structure of the vertical positioning mechanism of the present invention.

[0018] In the figure: 1, support plate; 2, synchronous wheel; 3, synchronous belt; 4, mounting block; 5, sleeve; 6, integrated conveying and cutting mechanism; 7, mounting plate; 8, blocking plate; 9, receiving seat; 10, punching machine; 11, punch; 12, positioning mechanism; 61, bottom plate; 62, straightening mechanism; 63, wire; 64, guide wheel; 65, guide seat; 66, feeding and cutting mechanism; 67, receiving block; 621, mounting frame; 622, connecting frame; 623, electric push rod 1; 624, push block; 625, connecting rod; 626, horizontal wheel; 627, reset spring; 628, guide frame; 629, vertical positioning mechanism ;661, movable seat;662, rotating shaft;663, feed wheel;664, servo motor;665, vertical rod;666, top support wheel;667, shearing mechanism;6671, swing plate;6672, movable shaft;6673, shearing head;6674, connecting seat;6675, round rod;6676, compression spring;121, square frame;122, cylinder;123, movable plate;124, clamping block;125, damping block;126, positioning seat;6291, horizontal plate;6292, electric push rod 2;6293, slider;6294, swing arm;6295, connecting arm;6296, vertical wheel. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of 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 of 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.

[0020] See also Figure 1-Figure 8 , a screw cold heading device and a cold heading process thereof, specifically including the following embodiments: According to one aspect of the present invention, a screw cold heading device is provided, comprising a support plate 1; synchronous wheels 2 are arranged oppositely on the left and right sides of the front end of the support plate 1, and synchronous belts 3 are arranged on the outer sides of the two sets of synchronous wheels 2, the synchronous belts 3 are in a runway-like structure, and mounting blocks 4 are distributed around the synchronous belts 3; the mounting block 4 is fixed to the rear end of the sleeve 5, and a conveying and cutting integrated mechanism 6 is installed at the rear end of the support plate 1, and a mounting plate 7 is fixed to the front end of the support plate 1; the mounting plate 7 is fixedly connected to the front end of the blocking plate 8, and the mounting plate 7 is fixed to the bottom of the receiving seat 9, and a punch 10 is arranged at the rear end of the receiving seat 9, and punches 11 are equidistantly distributed at the rear end of the punch 10, and the mounting plate 7 is fixed to the bottom of the positioning mechanism 12, and the positioning mechanism 12 includes a square frame 121, a cylinder 122, a shift The movable plate 123, the clamping block 124, the damping block 125, and the positioning seat 126, the bottom of the square frame 121 are fixed to the mounting plate 7, the cylinder 122 is arranged on the inner side of the right end of the square frame 121, the top of the cylinder 122 is fixed to the movable plate 123, and the movable plate 123 is slidably matched with the inner side of the square frame 121, the bottom of the movable plate 123 is equidistantly provided with clamping blocks 124, the bottom of the clamping block 124 is installed with a positioning seat 126, and the connection between the positioning seat 126 and the clamping block 124 is equidistantly provided with damping blocks 125, the movable plate 123 is provided with two groups, which are arranged relatively along the upper and lower sides of the interior of the square frame 121, the movable plate 123 is provided with clamping blocks 124, the damping block 125, and the positioning seat 126, and the two groups of positioning seats 126 are used to clamp the sleeve 5.

[0021] In some embodiments, a driving motor is provided at the rear end of the synchronous wheel 2, and the driving motor is used to drive the synchronous wheel 2, so that the synchronous wheel 2 drives the synchronous belt 3 to transmit, and the blocking plate 8 and the sleeve 5 located at the front end of the conveying and cutting integrated mechanism 6 are horizontally arranged, and the synchronous belt 3 is driven by the synchronous wheel 2 to transmit, so that the sleeve 5 is circulated and transported. When the sleeve is transported to the front end of the blocking plate 8, the conveying and cutting integrated mechanism 6 transports the wire 63 into the sleeve 5, and the blocking plate 8 blocks and limits the wire 63. Then the sleeve with the wire 63 enters the positioning seat 126 for positioning. At this time, the cylinder 122 contracts and drives the movable plate 123 to move to the lower end. The positioning seat 126 clamps and positions the sleeve 5, and then the punch 11 is driven by the punch 10 to punch the wire 63. The specific operation refers to the operation process of the document with publication number CN116408417B, which will not be repeated here.

[0022] In the present application, the integrated conveying and cutting mechanism 6 includes a bottom plate 61, a straightening mechanism 62, a wire 63, a guide wheel 64, a guide seat 65, a feed and cut mechanism 66, and a receiving block 67. The front end of the receiving block 67 is fixed to the support plate 1, the feed and cut mechanism 66 is fixed to the rear end of the receiving block 67, the feed and cut mechanism 66 is in contact with the bottom of the wire 63, the wire 63 passes through the middle of the guide seat 65, the bottom of the guide seat 65 is fixed to the bottom plate 61, and guide wheels 64 are arranged on the left and right sides of the top of the bottom plate 61. The guide wheels 64 are slidably matched with the outer wall of the wire 63, and the wire 63 passes through The straightening mechanism 62 is passed through the middle part, the bottom of the straightening mechanism 62 is fixedly connected to the bottom plate 61, the feeding and cutting mechanism 66 includes a movable seat 661, a rotating shaft 662, a feeding wheel 663, a servo motor 664, a vertical rod 665, a top support wheel 666, and a shearing mechanism 667. The receiving block 67 is fixed to the front end of the movable seat 661, the rotating shaft 662 is movably connected to the inner side of the movable seat 661, the rotating shaft 662 is transmission-connected to the middle part of the feeding wheel 663, the rotating shaft 662 is transmission-connected to the output end of the servo motor 664, the bottom of the vertical rod 665 is fixed to the movable seat 661, and the vertical rod 665 is connected to the top support wheel 666. The middle part of the wheel 666 is fixed, the top of the feed wheel 663 is embedded with a shearing mechanism 667, the middle part of the feed wheel 663 is concave, the movable seat 661 is provided with two groups, and the top of the movable seat 661 is provided with a vertical rod 665 and a top support wheel 666, the shearing mechanism 667 includes a swing plate 6671, a movable shaft 6672, a shearing head 6673, a connecting seat 6674, a round rod 6675, and a compression spring 6676. The swing plate 6671 is movably connected to the feed wheel 663 by a movable shaft 6672, the swing plate 6671 is fixed to the bottom of the shearing head 6673, and the feed wheel 66 3 is provided with connecting seats 6674 on the left and right sides thereof, the round rod 6675 is fixed to the middle part of the connecting seat 6674, and the swing plate 6671 is slidably matched with the round rod 6675, there are two groups of swing plates 6671, and the swing plates 6671 are symmetrically arranged, and the middle parts of the two groups of swing plates 6671 are provided with compression springs 6676, which are respectively fixed to the front and rear sides of the compression springs 6676, and the round rod 6675 runs through the middle part of the compression spring 6676, and the sizes of the feed wheel 663 and the guide wheel 64 can be designed or customized according to the size of the transmission wire 63 required in actual applications, which is not limited here.

[0023] In some embodiments, the servo motor 664 is a servo motor well known in the art, which refers to an engine that controls the operation of mechanical elements in a servo system. It is an auxiliary motor indirect speed change device that can control speed and has very accurate position accuracy. It can convert voltage signals into torque and speed to drive the control object. The servo motor 664 drives the rotating shaft 662 to rotate, and the rotating shaft 662 drives the feed wheel 663 to transmit. During the transmission process, the feed wheel 663 contacts the wire 63, thereby driving the wire 63 to move horizontally. After the feed wheel 663 rotates one circle, the shearing mechanism 667 on the feed wheel 663 enters the range of the top support wheel 666. At this time, the shearing mechanism 667 is also at the top of the feed wheel 663, and the wire 63 just passes through the two sets of shear heads 6673. In the middle part, the connecting seat 6674 is supported by the supporting wheel 666 and swings toward the middle of the compression spring 6676, so that the connecting seat 6674 presses the compression spring 6676 to deform and contract, and drives the shearing head 6673 to merge, thereby shearing the wire 63. As the feed wheel 663 continues to rotate, the shearing mechanism 667 withdraws from the supporting range of the supporting wheel 666, and restores the elastic potential energy of the deformation through the compression spring 6676, driving the connecting seat 6674 to reset, facilitating the next shearing operation. In this way, the wire feeding mechanism and the cutting mechanism are designed synchronously, which can ensure that the shearing operation is carried out accordingly during the transportation of the wire 63, and reduce the driving elements, so that the transportation and shearing can be carried out automatically, thereby increasing the efficiency of wire feeding and further increasing the efficiency of screw cold heading.

[0024] In the present application, the straightening mechanism 62 includes a mounting frame 621, a connecting frame 622, an electric push rod 623, a push block 624, a connecting rod 625, a horizontal wheel 626, a reset spring 627, a guide frame 628, and a vertical positioning mechanism 629. The bottom of the mounting frame 621 is fixed to the bottom plate 61, the left end of the mounting frame 621 is fixed to the connecting frame 622, the connecting frame 622 is fixedly connected to the left end of the electric push rod 623, a push block 624 is provided at the right end of the electric push rod 623, the push block 624 is movably connected to the left end of the connecting rod 625, the connecting rod 625 is movably connected to the front end of the horizontal wheel 626, a protrusion is provided at the front end of the horizontal wheel 626, and the protrusion is slidably matched with the inner side of the guide frame 628, the protrusion is fixed to the bottom of the reset spring 627, and the top of the reset spring 627 is fixedly connected to the guide frame 628, the mounting frame 62 A vertical positioning mechanism 629 is provided in the middle of 1, and the vertical positioning mechanism 629 includes a horizontal plate 6291, an electric push rod 6292, a slider 6293, a swing arm 6294, a connecting arm 6295, and a vertical wheel 6296. The horizontal plate 6291 is fixed to the top of the mounting frame 621, the horizontal plate 6291 is fixed to the bottom of the electric push rod 6292, the electric push rod 6292 is fixed to the front end of the slider 6293, and convex rods are relatively provided on the left and right sides of the top of the slider 6293, the convex rods are slidably matched with the right end of the swing arm 6294, the swing arm 6294 is movably connected to the upper left end of the horizontal plate 6291 by a rotating shaft, the rotating shaft is transmission-connected to the upper right end of the connecting arm 6295, the connecting arm 6295 is movably connected to the middle part of the vertical wheel 6296, and a movable groove is provided at the right end of the swing arm 6294, and the convex rod is embedded in the movable groove.

[0025] In some embodiments, the electric push rod 1 623 and the electric push rod 2 6292 are both ordinary electric push rods, also known as linear drives, which are mainly a new type of linear actuator composed of a motor push rod and a control device, and can be considered as an extension of the structure of a rotary motor. The wire 63 is first passed through the installation frame 621, and then the electric push rod 1 623 is retracted to drive the push block 624 to move to the left end. The push block 624 drives the connecting rod 625 to swing, so that the horizontal wheel 626 moves to the lower end of the guide frame 628, so that the horizontal wheel 626 can move the wire 63. The wire 63 is positioned horizontally by clamping, and at the same time, the electric push rod 6292 is extended, driving the slider 6293 to move, so that the protruding rod on the slider 6293 moves in the movable groove, pushing the swing arm 6294 to swing, and the swing arm 6294 drives the connecting arm 6295 to swing synchronously, so that the vertical wheel 6296 fits and squeezes the front and rear end walls of the wire 63, and the wire 63 is positioned and straightened. At the same time, the guide wheel 64 cooperates with the guide seat 65 to guide and convey the wire 63, so that the straightened wire 63 is conveyed to the feeding and cutting mechanism 66 for feeding.

[0026] According to one aspect of the present invention, according to another aspect of the present invention, a screw cold heading process is provided, and the process is as follows: Step S1: During operation, the feed cutting mechanism 66 straightens the wire 63, feeds and divides it into metal profiles and loads it into the sleeve 5; S2: The sleeve 5 carries the metal profile to be positioned in the positioning mechanism 12, and then passes through each punch 11 station of the punching machine 10 in turn, and the punch 11 punches the screw to complete the heading; S3: Finally, the screw preform with the screw head completed can be discharged.

[0027] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and wiring layout in detail.

[0028] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw cold heading device, characterized in that: comprising a support plate (1); Synchronous wheels (2) are arranged opposite to each other on the left and right sides of the front end of the support plate (1); synchronous belts (3) are arranged on the outer sides of the two sets of synchronous wheels (2); the synchronous belts (3) are in a runway-like structure, and mounting blocks (4) are distributed around the synchronous belts (3); The mounting block (4) is fixed to the rear end of the sleeve (5); the rear end of the support plate (1) is provided with an integrated conveying and cutting mechanism (6); and the front end of the support plate (1) is provided with a mounting plate (7); The integrated conveying and cutting mechanism (6) comprises a bottom plate (61), a straightening mechanism (62), a wire (63), a guide wheel (64), a guide seat (65), a feed and cut mechanism (66), and a receiving block (67); the front end of the receiving block (67) is fixed to the support plate (1); the feed and cut mechanism (66) is fixed to the rear end of the receiving block (67); the feed and cut mechanism (66) is in contact with the bottom of the wire (63); the wire (63) passes through the middle of the guide seat (65); the bottom of the guide seat (65) is fixed to the bottom plate (61); guide wheels (64) are arranged on the left and right sides of the top of the bottom plate (61); the guide wheels (64) are slidably matched with the outer wall of the wire (63); the wire (63) passes through the middle of the straightening mechanism (62); and the bottom of the straightening mechanism (62) is fixedly connected to the bottom plate (61).

2. A screw cold heading device according to claim 1, characterized in that: The mounting plate (7) is fixedly connected to the front end of the blocking plate (8), the mounting plate (7) is fixed to the bottom of the receiving seat (9), a punching machine (10) is provided at the rear end of the receiving seat (9), punches (11) are evenly distributed at the rear end of the punching machine (10), and the mounting plate (7) is fixed to the bottom of the positioning mechanism (12).

3. A screw cold heading device according to claim 2, characterized in that: The feeding and cutting mechanism (66) comprises a movable seat (661), a rotating shaft (662), a feeding wheel (663), a servo motor (664), a vertical rod (665), a supporting wheel (666), and a shearing mechanism (667); the receiving block (67) is fixed to the front end of the movable seat (661); the rotating shaft (662) is movably connected to the inner side of the movable seat (661); the rotating shaft (662) is transmission-connected to the middle part of the feeding wheel (663); the rotating shaft (662) is transmission-connected to the output end of the servo motor (664); the bottom of the vertical rod (665) is fixed to the movable seat (661); the vertical rod (665) is fixed to the middle part of the supporting wheel (666); and the shearing mechanism (667) is embedded and installed on the top of the feeding wheel (663).

4. A screw cold heading device according to claim 3, characterized in that: The middle portion of the feed wheel (663) is concave, and two groups of movable seats (661) are provided in total, and the tops of the movable seats (661) are both provided with vertical rods (665) and supporting wheels (666).

5. A screw cold heading device according to claim 4, characterized in that: The shearing mechanism (667) comprises a swinging plate (6671), a movable shaft (6672), a shearing head (6673), a connecting seat (6674), a round rod (6675), and a compression spring (6676); the swinging plate (6671) is movably connected to the feed wheel (663) by means of the movable shaft (6672); the swinging plate (6671) is fixed to the bottom of the shearing head (6673); connecting seats (6674) are arranged on the left and right sides of the feed wheel (663) in a manner opposite to each other; the round rod (6675) is fixed to the middle of the connecting seat (6674); and the swinging plate (6671) and the round rod (6675) are slidably matched.

6. A screw cold heading device according to claim 5, characterized in that: There are two groups of swing plates (6671) in total, and the swing plates (6671) are symmetrically arranged with each other. Compression springs (6676) are arranged in the middle of the two groups of swing plates (6671) and are respectively fixed to the front and rear sides of the compression springs (6676). The round rod (6675) passes through the middle of the compression spring (6676).

7. A screw cold heading device according to claim 6, characterized in that: The positioning mechanism (12) comprises a square frame (121), a cylinder (122), a movable plate (123), a clamping block (124), a damping block (125), and a positioning seat (126); the bottom of the square frame (121) is fixed to the mounting plate (7); the cylinder (122) is arranged on the inner side of the right end of the square frame (121); the top of the cylinder (122) is fixed to the movable plate (123); the movable plate (123) and the inner side of the square frame (121) are slidably matched; the bottom of the movable plate (123) is equidistantly provided with clamping blocks (124); the bottom of the clamping block (124) is provided with a positioning seat (126); and damping blocks (125) are equidistantly provided at the connection between the positioning seat (126) and the clamping block (124).

8. A screw cold heading device according to claim 7, characterized in that: The straightening mechanism (62) comprises a mounting frame (621), a connecting frame (622), an electric push rod (623), a push block (624), a connecting rod (625), a horizontal wheel (626), a return spring (627), a guide frame (628), and a vertical positioning mechanism (629). The bottom of the mounting frame (621) is fixed to the bottom plate (61), the left end of the mounting frame (621) is fixed to the connecting frame (622), the connecting frame (622) is fixedly connected to the left end of the electric push rod (623), and the electric push rod (623) is fixedly connected to the left end of the electric push rod (623). A push block (624) is provided at the right end of the mounting frame (623), the push block (624) is movably connected to the left end of the connecting rod (625), the connecting rod (625) is movably connected to the front end of the horizontal wheel (626), the front end of the horizontal wheel (626) is provided with a protrusion, and the protrusion is slidably matched with the inner side of the guide frame (628), the protrusion is fixed to the bottom of the return spring (627), and the top of the return spring (627) is fixedly connected to the guide frame (628), and a vertical positioning mechanism (629) is provided in the middle of the mounting frame (621).

9. A screw cold heading device according to claim 8, characterized in that: The vertical positioning mechanism (629) comprises a horizontal plate (6291), a second electric push rod (6292), a slider (6293), a swing arm (6294), a connecting arm (6295), and a vertical wheel (6296). The horizontal plate (6291) is fixed to the top of the mounting frame (621), the horizontal plate (6291) is fixed to the bottom of the second electric push rod (6292), the second electric push rod (6292) is fixed to the front end of the slider (6293), and convex rods are arranged on the left and right sides of the top of the slider (6293), the convex rods are slidably matched with the right end of the swing arm (6294), the swing arm (6294) is movably connected to the upper left end of the horizontal plate (6291) by a rotating shaft, the rotating shaft is transmission-connected to the upper right end of the connecting arm (6295), and the connecting arm (6295) is movably connected to the middle part of the vertical wheel (6296).

10. A screw cold heading process, applicable to a screw cold heading device according to any one of claims 1 to 9, characterized in that: The process is as follows: Step S1: during operation, the feeding and cutting mechanism (66) straightens the wire (63), feeds and cuts it into metal profiles and loads it into the sleeve (5); S2: The sleeve (5) carries the metal profile and is positioned in the positioning mechanism (12), and then passes through the punch (11) stations of the punching machine (10) in sequence, and the punch (11) punches the screw heads; S3: Finally, the screw preform with the screw head completed can be discharged.

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