A continuous thread rolling device for bolt machining

Abstract

The present application relates to the technical field of bolt processing, and particularly relates to a continuous thread rolling device for bolt processing, which comprises a thread rolling wheel with a vertical axis, a thread rolling cylinder which is sleeved outside the thread rolling wheel and has an axis parallel to the axis of the thread rolling wheel, wherein the thread rolling wheel and the thread rolling cylinder are arranged eccentrically to each other, and thread rolling teeth for thread rolling of the bolt are arranged on the outer wall of the thread rolling wheel and the inner wall of the thread rolling cylinder. By means of the arrangement of the thread rolling wheel and the thread rolling cylinder, a gap with gradually changing spacing is formed between the thread rolling wheel and the thread rolling cylinder. When the bolt moves in the gap, the rolling depth of the thread rolling teeth on the bolt gradually increases, thereby realizing gradual deepening thread rolling of the bolt, reducing the difficulty of thread rolling, and at the same time, by means of continuous rotation of the thread rolling wheel and the thread rolling cylinder, the bolts can be put into the gap one by one, thereby realizing continuous processing of the bolts and improving work efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of bolt processing, and in particular to a continuous thread rolling device for bolt processing. Background Technology

[0002] As the most common mechanical fastener, the quality and efficiency of bolt thread processing directly affect the performance and production cost of fasteners. Currently, the thread processing of bolts mainly adopts the thread rolling method, which uses two thread rolling wheels that can move close to or far apart to directly rotate and roll the bolt. This processing method requires controlling the thread rolling wheels to perform periodic reciprocating motion. During the return stroke, the thread rolling wheels are in an unloaded state and cannot perform thread processing. This results in unnecessary power consumption for the thread rolling wheels in the return stroke. At the same time, since each cycle of the thread rolling wheel can only process one bolt blank, its processing continuity is poor and its work efficiency is low. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a continuous thread rolling device for bolt processing, the specific technical solution of which is as follows: The present invention provides a continuous thread rolling device for bolt processing, comprising: The thread rolling wheel has its axis set vertically. A thread rolling drum is sleeved on the outside of the thread rolling wheel, and the axis of the thread rolling drum is parallel to the axis of the thread rolling wheel; The thread rolling wheel and the thread rolling cylinder are eccentrically arranged. The outer wall of the thread rolling wheel and the inner wall of the thread rolling cylinder are provided with threads for rolling the bolts. During the rotation or rest of the thread rolling wheel, the thread rolling cylinder is stationary or rotates, and the thread rolling wheel and the thread rolling cylinder move at a relative differential speed.

[0004] Furthermore, the teeth on the thread rolling wheel and the teeth on the thread rolling cylinder are both composed of a plurality of round teeth, and the plurality of round teeth are arranged along the axial direction of the thread rolling wheel or the thread rolling cylinder, and the round teeth are coaxially arranged with the corresponding thread rolling wheel or the thread rolling cylinder; A pusher structure is provided between the thread rolling wheel and the thread rolling cylinder to push the bolt to move along the axis of the thread rolling wheel.

[0005] Furthermore, the thread rolling wheel includes two connecting discs located on both sides and a plurality of discs located between the two connecting discs. The two connecting discs and the plurality of discs are arranged along the axial direction of the thread rolling wheel, and each disc is provided with at least one round tooth on its circumferential outer wall.

[0006] Furthermore, the thread rolling cylinder includes two connecting rings on both sides and a plurality of ring pieces between the two connecting rings. The two connecting rings and the plurality of ring pieces are arranged along the axial direction of the thread rolling cylinder, and each ring piece is provided with at least one round tooth on its circumferential outer wall.

[0007] Furthermore, the pushing structure includes a power ring and an inclined plate. The axis of the power ring is parallel to the axis of the thread rolling drum. A plurality of push rods are distributed in a ring on the power ring. The push rods are slidably arranged along the axis of the power ring, and the push rods are connected to the power ring by a spring. The inclined plate is located on the side of the power ring away from the thread rolling wheel, and one end of the push rod extends between the thread rolling wheel and the thread rolling cylinder to provide thrust for the bolt, while the other end of the push rod slides in contact with the inclined plate. The inclined plate is tilted towards the position where the shortest distance is between the outer wall of the thread rolling wheel and the inner wall of the thread rolling cylinder.

[0008] Furthermore, the push structure also includes a base, and the two ends of the inclined plate along its inclined direction are respectively slidably disposed on the base by two sliders. The sliding directions of the two sliders are perpendicular to each other, and the sliding direction of one slider is coplanar with the axis of the thread rolling wheel.

[0009] Furthermore, a platform is provided at the farthest distance between the outer wall of the thread rolling wheel and the inner wall of the thread rolling cylinder. The platform is coplanar with the upper surface of the thread rolling wheel, and a notch for supporting the bolt head is provided at one end of the platform. The top of the thread rolling wheel is provided with several side pushers. During the rotation of the thread rolling wheel, the side pushers push the bolts on the platform into the space between the thread rolling wheel and the thread rolling cylinder.

[0010] Furthermore, the side pusher includes a side pusher plate, a limiting protrusion, and a spring piece. One end of the side pusher plate is used to push the bolt to move, and the other end of the side pusher plate is rotatably disposed on the top of the thread rolling wheel. The limiting protrusion is used to limit the position of the side pusher plate, and the spring piece is used to connect the side pusher plate and the thread rolling wheel, and to make the side pusher plate abut against the limiting protrusion.

[0011] The beneficial effects of this invention are as follows: By using an eccentrically positioned thread rolling wheel and thread rolling drum, a gradually changing gap can be formed between them. As the bolt moves within this gap, the rolling depth of the thread rolling teeth gradually increases, thus achieving progressively deeper thread rolling and reducing the difficulty of thread rolling. At the same time, by utilizing the continuous rotation of the thread rolling wheel and thread rolling drum, bolts can be placed one by one between them, thereby achieving continuous bolt processing, improving work efficiency. Furthermore, since the thread rolling wheel and thread rolling drum only need to rotate, the movement of the device is simpler and the operation is more convenient. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of a continuous thread rolling device for bolt processing. Figure 2 for Figure 1 Schematic diagram of the structure of the thread rolling wheel; Figure 3 for Figure 1 Schematic diagram of the structure of the thread rolling cylinder; Figure 4 for Figure 1 Schematic diagram of the middle jacking structure; Figure 5 for Figure 4 Schematic diagram of the inclined plate; Figure 6 for Figure 4 A schematic diagram of the central dynamic ring and its upper structure; Figure label: 1. Thread rolling wheel; 2. Thread rolling drum; 3. Thread rolling pin; 4. Connecting disc; 5. Disc; 6. Connecting ring; 7. Ring piece; 8. Pushing structure; 9. Power ring; 10. Push rod; 11. Spring; 12. Ball bearing; 13. Tray; 14. Inclined plate; 15. Base; 16. Slider; 17. Push screw; 18. Display platform; 19. Side push plate; 20. Limiting protrusion; 21. Spring piece. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0015] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0016] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0017] like Figures 1 to 6 As shown, a continuous thread rolling device for bolt processing according to the present invention includes: Thread rolling wheel 1, with its axis set vertically; The thread rolling drum 2 is sleeved on the outside of the thread rolling wheel 1, and the axis of the thread rolling drum 2 is parallel to the axis of the thread rolling wheel 1. The thread rolling wheel 1 and the thread rolling drum 2 are eccentrically arranged. The outer wall of the thread rolling wheel 1 and the inner wall of the thread rolling drum 2 are provided with thread rolling teeth 3 for rolling the bolts. During the rotation or stationary process of the thread rolling wheel 1, the thread rolling drum 2 is stationary or rotates, and the thread rolling wheel 1 and the thread rolling drum 2 perform relative differential motion.

[0018] In this invention, the thread rolling cylinder 2 is sleeved on the outside of the thread rolling wheel 1, and the thread rolling cylinder 2 and the thread rolling wheel 1 are eccentrically arranged. This allows the size of the gap between the thread rolling wheel 1 and the thread rolling cylinder 2 to gradually change along the circumference of the thread rolling wheel 1. That is, from the farthest distance between the outer wall of the thread rolling wheel 1 and the inner wall of the thread rolling cylinder 2 to the closest distance, the gap gradually decreases. Utilizing this characteristic, the bolt can form a gradual extrusion effect between the thread rolling wheel 1 and the thread rolling cylinder 2, so that the thread on the bolt blank gradually deepens until it is formed, reducing the difficulty of thread processing.

[0019] Since the main processing method for bolt blanks using the thread rolling wheel 1 and thread rolling drum 2 is roll forming, relative movement is required between them. Specifically, when the thread rolling wheel 1 is stationary, the thread rolling drum 2 rotates, causing the bolt blank to roll on the outer wall of the thread rolling wheel 1 using friction. The rotation direction of the thread rolling drum 2 can be either forward or reverse, both achieving the roll forming process. When the thread rolling wheel 1 rotates forward or backward, the thread rolling drum 2 can remain stationary, in which case the thread rolling wheel 1 uses friction to drive the bolt blank to roll on the inner wall of the thread rolling drum 2. When both the thread rolling wheel 1 and the thread rolling drum 2 rotate around their respective axes, the rolling process... The rotation directions of the thread roller 1 and the thread rolling drum 2 can be opposite. In this case, the thread roller 1 and the thread rolling drum 2 work together to drive the bolt blank to rotate. The rotation speed of the blank is higher than its movement speed between the thread roller 1 and the thread rolling drum 2. This can increase the number of rolling turns of the blank and the length of its rotation trajectory, thereby reducing the amount of spin per unit rolling distance of the blank. Of course, the rotation directions of the thread roller 1 and the thread rolling drum 2 can also be the same. In this case, the thread roller 1 and the thread rolling drum 2 also need to perform differential motion. However, the amount of spin per unit rolling distance of the blank will increase in this mode. Its working mode is the opposite of the mode when the thread roller 1 and the thread rolling drum 2 rotate in opposite directions.

[0020] It should be noted that when both the thread rolling wheel 1 and the thread rolling drum 2 are rotating, the rotation speed of the thread rolling wheel 1 can be greater than or less than the rotation speed of the thread rolling drum 2, as long as there is a certain speed difference between them.

[0021] The vertical orientation of the thread rolling wheel 1 facilitates the vertical alignment of the bolt. In some embodiments, the axis of the thread rolling wheel 1 can also be horizontal or inclined.

[0022] In use, taking the vertical axis of thread rolling wheel 1 as an example, the left and right sides of the furthest distance between thread rolling wheel 1 and thread rolling drum 2 are respectively set as the loading position and the unloading position. The bolt blank is placed between thread rolling wheel 1 and thread rolling drum 2 through the loading position, with the head of the blank located at the top of thread rolling wheel 1. The motor drives thread rolling wheel 1 and thread rolling drum 2 to perform differential speed movement. The thread rolling wheel 1 or thread rolling drum 2 with a higher rotation speed will use friction to drive the bolt toward the closest distance between thread rolling wheel 1 and thread rolling drum 2. The bolt rolls on the horizontal plane, and the rolling rollers on the outer wall of thread rolling wheel 1... The tooth 3 engages with the rolling teeth 3 on the inner wall of the rolling drum 2 to perform thread rolling on the blank, so that the surface of the blank gradually forms threads. When the blank passes the position where the distance between the rolling wheel 1 and the rolling drum 2 is the closest, the thread processing on the surface of the blank is completed. At this time, the rolling wheel 1 and the rolling drum 2 work together to move the bolt to the unloading position. Since the rolling wheel 1 and the rolling drum 2 can be in a continuous state of motion, the bolts can be continuously placed between the rolling wheel 1 and the rolling drum 2 through the loading position. The bolts that have been thread rolled will be discharged one by one through the unloading position. Thus, the bolts are processed by the continuous rotation mode.

[0023] It should be noted that bolts that undergo thread rolling are generally thin bolts, and the diameter of the threaded area is larger than the diameter of the smooth shank.

[0024] By using the eccentric arrangement of the thread rolling wheel 1 and the thread rolling drum 2, a gradually changing gap can be formed between them. When the bolt moves within this gap, the rolling depth of the thread rolling tooth 3 gradually increases, thereby achieving progressive thread deepening and reducing the difficulty of thread rolling. At the same time, by using the continuous rotation of the thread rolling wheel 1 and the thread rolling drum 2, bolts can be placed one by one between them, thus achieving continuous bolt processing, improving work efficiency. Furthermore, since the thread rolling wheel 1 and the thread rolling drum 2 only need to rotate, the movement of the device is simpler and the operation is more convenient.

[0025] Furthermore, the teeth 3 on the thread rolling wheel 1 and the teeth 3 on the thread rolling cylinder 2 are both composed of several round teeth, and the several round teeth are arranged along the axial direction of the thread rolling wheel 1 or the thread rolling cylinder 2, and the round teeth are coaxially arranged with the corresponding thread rolling wheel 1 or the thread rolling cylinder 2. A pusher structure 8 is provided between the thread rolling wheel 1 and the thread rolling cylinder 2 to push the bolt to move along the axis of the thread rolling wheel 1.

[0026] The round teeth are annular in shape. Several round teeth on the thread rolling wheel 1 and several round teeth on the thread rolling cylinder 2 are coaxially arranged. When the thread rolling wheel 1 uses the round teeth to process the bolt blank, if the blank does not move in its axial direction, the round teeth will roll a ring-shaped groove on the surface of the blank. When the push structure 8 provides displacement along its axial direction for the blank, the rolling of the round teeth on the blank will form a spiral groove on its surface, thereby realizing thread processing.

[0027] The aforementioned round teeth configuration can reduce the processing difficulty and cost of the rolling teeth 3.

[0028] Furthermore, the thread rolling wheel 1 includes two connecting discs 4 located on both sides and several discs 5 located between the two connecting discs 4. The two connecting discs 4 and several discs 5 are arranged along the axial direction of the thread rolling wheel 1, and each disc 5 is provided with at least one round tooth on its circumferential outer wall.

[0029] like Figure 2 As shown, the upper and lower connecting discs 4 can clamp several discs 5 between them, and the two connecting discs 4 and several discs 5 can be fastened together by connecting rods, nuts and other structures. When the round teeth on a disc 5 are damaged, since the shape of each disc 5 is the same, the disc 5 can be directly replaced, which effectively reduces the processing difficulty of the thread rolling wheel 1 and facilitates maintenance.

[0030] Furthermore, the thread rolling cylinder 2 includes two connecting rings 6 located on both sides and several ring pieces 7 located between the two connecting rings 6. The two connecting rings 6 and several ring pieces 7 are arranged along the axial direction of the thread rolling cylinder 2, and each ring piece 7 is provided with at least one round tooth on its circumferential outer wall.

[0031] like Figure 3 As shown, the two connecting rings 6 also clamp several ring pieces 7 between them, and the two connecting rings 6 and several ring pieces 7 can be fastened together by connecting rods, nuts or other structures. The thread rolling drum 2 with this structure mode has the same function as the thread rolling wheel 1.

[0032] Furthermore, the jacking structure 8 includes a power ring 9 and an inclined plate 14. The axis of the power ring 9 is parallel to the axis of the thread rolling cylinder 2. Several push rods 10 are distributed in a ring on the power ring 9. The push rods 10 are slidably arranged along the axis of the power ring 9, and the push rods 10 are connected to the power ring 9 by a spring 11. The inclined plate 14 is located on the side of the power ring 9 away from the thread rolling wheel 1, and one end of the push rod 10 extends between the thread rolling wheel 1 and the thread rolling cylinder 2 and is used to provide thrust for the bolt. The other end of the push rod 10 is in sliding contact with the inclined plate 14. The inclined plate 14 is tilted towards the position where the shortest distance is between the outer wall of the thread rolling wheel 1 and the inner wall of the thread rolling cylinder 2.

[0033] The inclined plate 14 can provide a driving action for several push rods 10 on the power ring 9 along the axis of the thread rolling wheel 1. The power ring 9 can be driven to rotate by a motor. Since the movement speed of the bolt blank is different from that of the thread rolling wheel 1 and the thread rolling drum 2 when the bolt blank moves between the thread rolling wheel 1 and the thread rolling drum 2, the power ring 9 needs to be controlled by an independent motor so that the power ring 9 can move synchronously with the blank.

[0034] Spring 11 provides elastic force to push rod 10 in the direction of inclined plate 14. When the billet is placed between the thread rolling wheel 1 and the thread rolling drum 2 and rolled by the drive of the thread rolling wheel 1 and the thread rolling drum 2, the power ring 9 rotates synchronously. The top of one push rod 10 on the power ring 9 corresponds to the bottom of the billet. When the power ring 9 drives the push rod 10 to move on the inclined plate 14, the inclined plate 14 can provide vertical auxiliary thrust to the push rod 10. The push rod 10 transmits this thrust to the billet, thereby providing power for the vertical displacement of the billet.

[0035] When the blank passes through the position where the distance between the thread rolling wheel 1 and the thread rolling cylinder 2 is the shortest, the thread processing on the blank is completed, and the push rod 10 reaches the highest point. After that, when the power ring 9 drives the push rod 10 to continue moving, the spring 11 will pull the push rod 10 to move downward in the vertical direction, and the bottom of the push rod 10 will remain in contact with the inclined plate 14.

[0036] To reduce the friction between the bottom of the push rod 10 and the upper surface of the inclined plate 14, a ball bearing 12 can be installed at the bottom of the push rod 10. Since the bolt moves relative to the push rod 10 when it rolls, a tray 13 can be rotatably installed at the top of the push rod 10 to achieve a relative rotational connection between the push rod 10 and the bolt.

[0037] Furthermore, the push structure 8 also includes a base 15, and the two ends of the inclined plate 14 along its inclined direction are respectively slidably mounted on the base 15 by two sliders 16. The sliding directions of the two sliders 16 are perpendicular to each other, and the sliding direction of one slider 16 is coplanar with the axis of the thread rolling wheel 1.

[0038] like Figure 5 As shown, the two ends of the inclined plate 14 can be moved on different tracks by two sliders 16, thereby adjusting the tilt angle of the inclined plate 14, which facilitates the adjustment of the thread pitch on the bolt. The base 15 can provide support and space for the adjustment of the inclined plate 14. After the inclined plate 14 is adjusted, the sliders 16 and the base 15 can be fastened together by the set screws 17.

[0039] Furthermore, a platform 18 is provided at the farthest distance between the outer wall of the thread rolling wheel 1 and the inner wall of the thread rolling cylinder 2. The platform 18 is coplanar with the upper surface of the thread rolling wheel 1, and a notch for supporting the bolt head is provided at one end of the platform 18. The top of the thread rolling wheel 1 is provided with several side pushers. During the rotation of the thread rolling wheel 1, the side pushers push the bolts on the platform 18 into the space between the thread rolling wheel 1 and the thread rolling cylinder 2.

[0040] The notch on the platform 18 corresponds to the loading position between the thread rolling wheel 1 and the thread rolling drum 2. The bolt blank to be processed can be placed in the notch, with the head of the blank placed on the platform 18, and the screw part extending between the thread rolling wheel 1 and the thread rolling drum 2. Thus, the platform 18 is used to initially lift the blank, making it easier for the worker to separate from the blank after loading. Then, the thread rolling wheel 1 will use its side pusher to push the blank directly between the thread rolling wheel 1 and the thread rolling drum 2, avoiding the worker being injured when the thread rolling wheel 1 and the thread rolling drum 2 drive the blank to start moving when the worker directly places the blank between the thread rolling wheel 1 and the thread rolling drum 2.

[0041] The shelf 18 and the base 15 are fixedly positioned relative to each other.

[0042] Furthermore, the side pusher includes a side pusher plate 19, a limiting protrusion 20, and a spring piece 21. One end of the side pusher plate 19 is used to push the bolt to move, and the other end of the side pusher plate 19 is rotatably disposed on the top of the thread rolling wheel 1. The limiting protrusion 20 is used to limit the position of the side pusher plate 19, and the spring piece 21 is used to connect the side pusher plate 19 and the thread rolling wheel 1, and to make the side pusher plate 19 abut against the limiting protrusion 20.

[0043] In its natural state, the spring plate 21 pushes the side push plate 19 to abut against the limiting protrusion 20. At this time, the side push plate 19 moves along the radial direction of the thread rolling wheel 1. When the side push plate 19 moves onto the platform 18, it can generate a lateral thrust on the head of the bolt blank, thereby causing the head to slide on the top of the thread rolling wheel 1 and the top of the thread rolling cylinder 2, and allowing the screw to smoothly enter between the thread rolling wheel 1 and the thread rolling cylinder 2. When the threads on the thread rolling wheel 1 and the threads on the thread rolling cylinder 2 perform thread rolling on the blank, the friction between them will overcome the elastic force of the spring plate 21 and cause the side push plate 19 to move relative to the head of the blank, thereby allowing the side push plate 19 to avoid the head of the blank and enabling the blank to roll normally.

[0044] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A continuous thread rolling device for bolt processing, characterized in that, include: The thread rolling wheel has its axis set vertically. A thread rolling drum is sleeved on the outside of the thread rolling wheel, and the axis of the thread rolling drum is parallel to the axis of the thread rolling wheel; The thread rolling wheel and the thread rolling cylinder are eccentrically arranged. The outer wall of the thread rolling wheel and the inner wall of the thread rolling cylinder are provided with threads for rolling the bolts. During the rotation or rest of the thread rolling wheel, the thread rolling cylinder is stationary or rotates, and the thread rolling wheel and the thread rolling cylinder move at a relative differential speed.

2. The continuous thread rolling device for bolt processing according to claim 1, characterized in that, The teeth on the thread rolling wheel and the teeth on the thread rolling cylinder are both composed of a plurality of round teeth, and the plurality of round teeth are arranged along the axial direction of the thread rolling wheel or the thread rolling cylinder, and the round teeth are coaxially arranged with the corresponding thread rolling wheel or thread rolling cylinder; A pusher structure is provided between the thread rolling wheel and the thread rolling cylinder to push the bolt to move along the axis of the thread rolling wheel.

3. The continuous thread rolling device for bolt processing according to claim 2, characterized in that, The thread rolling wheel includes two connecting discs on both sides and several discs between the two connecting discs. The two connecting discs and several discs are arranged along the axis of the thread rolling wheel, and each disc is provided with at least one round tooth on its circumferential outer wall.

4. The continuous thread rolling device for bolt processing according to claim 2, characterized in that, The thread rolling cylinder includes two connecting rings on both sides and several ring pieces between the two connecting rings. The two connecting rings and several ring pieces are arranged along the axial direction of the thread rolling cylinder, and each ring piece is provided with at least one round tooth on its circumferential outer wall.

5. A continuous thread rolling device for bolt processing according to claim 2, characterized in that, The jacking structure includes a power ring and an inclined plate. The axis of the power ring is parallel to the axis of the thread rolling drum. Several push rods are distributed in a ring on the power ring. The push rods are slidably arranged along the axis of the power ring, and the push rods are connected to the power ring by springs. The inclined plate is located on the side of the power ring away from the thread rolling wheel, and one end of the push rod extends between the thread rolling wheel and the thread rolling cylinder to provide thrust for the bolt, while the other end of the push rod slides in contact with the inclined plate. The inclined plate is tilted towards the position where the shortest distance is between the outer wall of the thread rolling wheel and the inner wall of the thread rolling cylinder.

6. The continuous thread rolling device for bolt processing according to claim 5, characterized in that, The push-up structure also includes a base, and the two ends of the inclined plate along its inclined direction are respectively slidably mounted on the base by two sliders. The sliding directions of the two sliders are perpendicular to each other, and the sliding direction of one slider is coplanar with the axis of the thread rolling wheel.

7. The continuous thread rolling device for bolt processing according to claim 1, characterized in that, A platform is provided at the farthest distance between the outer wall of the thread rolling wheel and the inner wall of the thread rolling cylinder. The platform is coplanar with the upper surface of the thread rolling wheel. A notch for supporting the bolt head is provided at one end of the platform. The top of the thread rolling wheel is provided with several side pushers. During the rotation of the thread rolling wheel, the side pushers push the bolts on the platform into the space between the thread rolling wheel and the thread rolling cylinder.

8. A continuous thread rolling device for bolt processing according to claim 7, characterized in that, The side pusher includes a side pusher plate, a limiting protrusion, and a spring piece. One end of the side pusher plate is used to push the bolt to move, and the other end of the side pusher plate is rotatably disposed on the top of the thread rolling wheel. The limiting protrusion is used to limit the position of the side pusher plate, and the spring piece is used to connect the side pusher plate and the thread rolling wheel, and to make the side pusher plate abut against the limiting protrusion.

Images