A screw thread rolling device

Abstract

This utility model provides a screw thread rolling device, relating to the field of screw thread processing technology. The screw thread rolling device includes an operating table, a support unit, a rolling unit, a drive unit, and a stabilizing unit. The stabilizing unit is located within the operating table and is used to improve the stability of the drive unit during vertical movement. This rolling device can simultaneously drive two rolling cylinders to rotate synchronously, at the same speed, and in the same direction via a motor, an extension shaft, a sprocket, and a chain. Furthermore, when the two rolling cylinders approach or move away from each other, a connecting rod can drive the motor to rise or fall, ensuring the chain remains taut and in a stable transmission state, thus guaranteeing normal operation of the equipment. Because the rotation of the two rolling cylinders and the rising and falling of the motor are controlled through mechanical connections or transmissions, it offers higher operational stability, reduces maintenance frequency, saves costs, and provides excellent performance.

Description

Technical Field

[0001] This utility model relates to the field of screw thread processing technology, specifically a screw thread rolling device. Background Technology

[0002] When making screw threads, external threads can be machined using a lathe or a rolling mill. The appropriate machining method can be selected according to production needs. Existing thread rolling devices include two rolling cylinders, which are driven by two motors to control their rotation. Although the two motors can control the two rolling cylinders to rotate synchronously, at the same speed, and in the same direction within the allowable error range, in complex machining environments, relatively frequent maintenance of the rolling device is required to improve its stability. This results in relatively high operating costs and makes it difficult to meet usage requirements. Utility Model Content

[0003] The purpose of this invention is to provide a screw thread rolling device, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: the screw thread rolling device includes:

[0005] Control panel;

[0006] A support section is provided on the operating table and is used to place the bar stock for making the screw and to position the bar stock.

[0007] The rolling section is mounted on the operating table and has two rolling units located on both sides of the support. The two rolling units can move on the operating table in opposite directions.

[0008] The driving unit is mounted on the operating table. The driving unit is used to drive the two rolling units in the rolling section to rotate synchronously and at the same speed. The two rolling units rotate in the same direction. When the two rolling units are close to each other, the driving unit moves downward and when the two rolling units are far apart, the driving unit moves upward.

[0009] A stabilizing unit is provided inside the operating table, and the stabilizing unit is used to improve the stability of the drive unit when it moves up and down.

[0010] Preferably, the operating table includes a mounting plate and a base frame, with the mounting plate disposed on the upper surface of the base frame.

[0011] Preferably, the support includes a mounting bracket mounted on a mounting plate, a support plate at one end of the mounting bracket, a movable frame slidably connected to the mounting bracket, a sleeve on one side of the movable frame, a positioning bolt threaded into the sleeve, one end of the positioning bolt abutting against the surface of the mounting bracket, a vertical plate on the upper surface of the movable frame, and a positioning rod on one side of the vertical plate.

[0012] Preferably, the rolling unit includes a base, a rolling cylinder is mounted on the base, a main shaft is mounted on the rolling cylinder, the main shaft is rotatably connected to the base, a guide rail is mounted on the lower surface of the base, and a guide groove for the movement of the guide rail is formed on the upper surface of the mounting plate. The rolling part also includes a connecting unit for connecting two bases. Two connecting units are provided and symmetrically arranged on the mounting plate. Each connecting unit includes a rotating plate, which is rotatably connected to the mounting plate. One end of the base and the rotating plate are connected by a connecting rod. The two ends of the connecting rod are rotatably connected to the base and the rotating plate, respectively. A fixing plate is provided on the mounting plate, and guard plates are provided at both ends of the mounting plate. A lead screw is rotatably connected between the guard plate and the fixing plate. One of the bases is provided with a threaded sleeve that cooperates with the lead screw. A motor for driving the lead screw to rotate is provided on the guard plate.

[0013] Preferably, a fixing rod is provided between the two guard plates, and a through hole is provided on the base for sliding connection with the fixing rod. A spring is sleeved on the fixing rod, and the spring is located between the two bases.

[0014] Preferably, the drive unit includes a movable plate disposed within a base frame, a second motor disposed on the movable plate, an extension shaft disposed at the output end of the second motor, a through groove for the extension shaft to move up and down on the side of the base frame, sprockets disposed on both the extension shaft and the main shaft, two sprockets disposed on the extension shaft and one sprocket disposed on the main shaft, and a chain for connecting the sprockets of the main shaft and the extension shaft, a through groove disposed on the mounting plate, and a second connecting rod, one end of the second connecting rod being rotatably connected to the base, and the other end of the second connecting rod being rotatably connected to the movable plate after passing through the through groove.

[0015] Preferably, the stabilizing part includes a partition plate disposed within the bottom frame, a vertical rod disposed on the lower surface of the movable plate, the lower end of the vertical rod penetrating through the partition plate, a second spring disposed on the vertical rod, the second spring being located between the movable plate and the partition plate, a guide cylinder disposed on the lower surface of the partition plate, and the vertical rod being slidably connected to the guide cylinder.

[0016] The beneficial effects of this utility model are:

[0017] This type of rolling device can drive two rolling drums to rotate synchronously, at the same speed, and in the same direction through the transmission of motor two, extension shaft, sprocket, and chain. When the two rolling drums approach or move away from each other, motor two can also be driven to rise or fall through connecting rod two, so that the chain always remains taut and in a stable transmission state, ensuring that the equipment can be used normally. Since the rotation of the two rolling drums and the rising and falling of the motor are all controlled by mechanical structure connection or transmission, it has higher stability in use, reduces the frequency of maintenance, saves costs, and has good performance. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0019] Figure 2 This is a partial structural diagram of the base.

[0020] Figure 3 This is a schematic diagram of the structure where two bases are connected to each other.

[0021] Figure 4 This is a schematic diagram of the internal structure of the bottom frame.

[0022] Figure 5 This is a schematic diagram of the extended shaft.

[0023] Figure 6 This is a schematic diagram showing the fit between the base and the mounting plate.

[0024] Figure 7 This is a top view during the processing of bar stock.

[0025] Figure 8 This is a schematic diagram showing the rotation direction of the bar stock and the rolling cylinder.

[0026] In the diagram: 1. Bar stock; 2. Mounting plate; 3. Base frame; 4. Mounting bracket; 5. Support plate; 6. Movable frame; 7. Sleeve; 8. Positioning bolt; 9. Vertical plate; 10. Positioning rod; 11. Base; 12. Rolling cylinder; 13. Main shaft; 14. Guide rail; 15. Rotating plate; 16. Connecting rod one; 17. Fixing plate; 18. Guard plate; 19. Lead screw; 20. Screw sleeve; 21. Motor one; 22. Fixing rod; 23. Spring one; 24. Movable plate; 25. Motor two; 26. Extension shaft; 27. Sprocket; 28. Chain; 29. ​​Connecting rod two; 30. Partition plate; 31. Vertical rod; 32. Spring two; 33. Guide cylinder; 34. Cover plate. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0028] like Figure 1-8As shown, a screw thread rolling device includes:

[0029] Control panel;

[0030] The support section is set on the operating table and is used to place the bar stock 1 for making the screw and to position the bar stock 1.

[0031] The rolling section is mounted on the operating table and has two rolling units located on both sides of the support section. The two rolling units can move on the operating table in opposite directions.

[0032] The drive unit is located on the operating table. The drive unit is used to drive the two rolling units in the rolling section to rotate synchronously and at the same speed. The two rolling units rotate in the same direction. When the two rolling units are close to each other, the drive unit moves downward and when the two rolling units are far apart, the drive unit moves upward.

[0033] The stabilizing unit is located inside the control panel and is used to improve the stability of the drive unit when it moves up and down.

[0034] Furthermore, the operating table includes a mounting plate 2 and a base frame 3, with the mounting plate 2 disposed on the upper surface of the base frame 3.

[0035] The mounting plate 2 and the base frame 3 are connected by bolts. Both the mounting plate 2 and the base frame 3 are made of cast iron, and their large weight improves the overall stability of the device during operation.

[0036] Furthermore, the support includes a mounting bracket 4 mounted on the mounting plate 2. One end of the mounting bracket 4 is provided with a support plate 5. A movable frame 6 is slidably connected to the mounting bracket 4. A sleeve 7 is provided on one side of the movable frame 6. A positioning bolt 8 is threadedly connected inside the sleeve 7. One end of the positioning bolt 8 abuts against the surface of the mounting bracket 4. A vertical plate 9 is provided on the upper surface of the movable frame 6. A positioning rod 10 is provided on one side of the vertical plate 9.

[0037] Mounting bracket 4 is made of metal and can be fixed to mounting plate 2 by welding or bolting. Support plate 5 supports bar stock 1. The part of bar stock 1 that needs to be threaded externally needs to be placed on mounting bracket 4. Movable frame 6, upright plate 9, sleeve 7 and positioning rod 10 are all made of metal. Movable frame 6 can move on mounting bracket 4. By controlling the position of movable frame 6 on mounting bracket 4, the positions of upright plate 9 and positioning rod 10 can be adjusted. When bar stock 1 is placed on support plate 5 and mounting bracket 4, when one end of bar stock 1 abuts against positioning rod 10, it indicates that bar stock 1 is in the correct position. After the position of movable frame 6 is adjusted, by rotating positioning bolt 8 inside sleeve 7, one end of positioning bolt 8 will abut against the surface of mounting bracket 4. Through the friction between positioning bolt 8 and mounting bracket 4, movable frame 6 is restricted on mounting bracket 4. Positioning bolt 8 can be maintained after a certain period of operation to prevent the positioning bolt 8 from loosening due to vibration during operation, which would lead to inaccurate positioning of positioning rod 10.

[0038] Furthermore, the rolling unit includes a base 11, on which a rolling cylinder 12 is mounted, and on which a main shaft 13 is mounted. The main shaft 13 is rotatably connected to the base 11. A guide rail 14 is mounted on the lower surface of the base 11, and a guide groove for the movement of the guide rail 14 is provided on the upper surface of the mounting plate 2. The rolling part also includes a connecting unit for connecting two bases 11. Two connecting units are provided and symmetrically arranged on the mounting plate 2. The connecting unit includes a rotating plate 15, which is rotatably connected to the mounting plate 2. One end of the base 11 and the rotating plate 15 are connected by a connecting rod 16. The two ends of the connecting rod 16 are rotatably connected to the base 11 and the rotating plate 15, respectively. A fixing plate 17 is provided on the mounting plate 2, and guard plates 18 are provided at both ends of the mounting plate 2. A lead screw 19 is rotatably connected between the guard plate 18 and the fixing plate 17. A threaded sleeve 20 that cooperates with the lead screw 19 is provided on one of the bases 11, and a motor 21 for driving the lead screw 19 to rotate is provided on the guard plate 18.

[0039] When rolling the bar stock 1 placed on the mounting frame 4, it is necessary to bring the two rolling cylinders 12 close to each other to squeeze the bar stock 1. The rolling of the bar stock 1 is achieved by the rotation of the rolling cylinders 12. When bringing the two rolling cylinders 12 close to squeeze the bar stock 1, the motor 21 is started first. The motor 21 drives the lead screw 19 to rotate. Through the threaded connection between the lead screw 19 and the screw sleeve 20, and through the cooperation between the guide rail 14 and the guide groove, the base 11 can be moved along the mounting plate 2. When the base 11 driven by the motor 21 moves, it will drive the other base 11 to move through the cooperation of the rotating plate 15 and the two connecting rods 16, so that the two bases 11 can move closer or further apart. When squeezing the bar stock 1, the two bases 11 move closer to each other, and the distance between the two bases 11 is shortened.

[0040] Motor 121 is a servo motor that can be controlled by a PLC system. The moving distance of the base 11 can be determined according to the diameter of the bar stock 1. The moving distance of the base 11 can be controlled by controlling the number of rotations of the lead screw 19 of the bar stock 1. When changing to a bar stock of different specifications, it is necessary to re-determine and adjust the number of rotations of the lead screw 19 so that the two rolling cylinders 12 can form a compression on the bar stock 1.

[0041] Furthermore, a fixing rod 22 is provided between the two guard plates 18, and a through hole is provided on the base 11 to be slidably connected to the fixing rod 22. A spring 23 is sleeved on the fixing rod 22, and the spring 23 is located between the two bases 11.

[0042] The guard plate 18 and the fixing rod 22 can be connected by bolts. When the two bases 11 move closer or further apart, the bases 11 can move along the fixing rod 22. At the same time, the spring 23 on the fixing rod 22 is always in a compressed state. When the two bases 11 move, the reaction force of the spring 23 can improve the stability of the bases 11 when moving.

[0043] A cover plate 34 can be installed on the upper surface of one of the bases 11. When the distance between the two bases 11 is the greatest, the cover plate 34 can cover the parts between the two bases 11 to prevent external impurities from falling between the two bases 11 and affecting the stability and accuracy of the movement of the bases 11.

[0044] Furthermore, the drive unit includes a movable plate 24 disposed within the base frame 3, a second motor 25 disposed on the movable plate 24, an extension shaft 26 disposed at the output end of the second motor 25, a through groove for the extension shaft 26 to move up and down on the side of the base frame 3, sprockets 27 disposed on both the extension shaft 26 and the main shaft 13, two sprockets 27 disposed on the extension shaft 26 and one sprocket 27 disposed on the main shaft 13, and also includes a chain 28 for connecting the main shaft 13 and the sprockets 27 of the extension shaft 26, a through groove disposed on the mounting plate 2, and also includes a second connecting rod 29, one end of the second connecting rod 29 being rotatably connected to the base 11, and the other end of the second connecting rod 29 being rotatably connected to the movable plate 24 after passing through the through groove.

[0045] When controlling the rotation of the two rolling drums 12, the second motor 25 is started first. The second motor 25 drives the extension shaft 26 to rotate, and drives the two sprockets 27 on the extension shaft 26 to rotate. The two sprockets 27 on the extension shaft 26 drive the sprockets 27 on the two rolling drums 12 to rotate through the chains 28, which in turn drives the main shaft 13 and the rolling drums 12 to rotate. The four sprockets 27 and the two chains 28 are all the same size, thus ensuring that the two rollers can rotate synchronously, at the same speed and in the same direction.

[0046] When the two bases 11 approach each other, the movable plate 24 can be pushed downward by the connecting rod 29, which in turn drives the motor 25 to move downward, thereby causing the extension shaft 26 and the two sprockets 27 on the extension shaft 26 to move downward, so as to maintain a relatively tensioned and stable state with the chain 28. When the two bases 11 move away from each other, the motor 25, the extension shaft 26 and the sprockets 27 on the extension shaft 26 can be driven upward.

[0047] The amplitude of the movable plate 24 when it rises or falls can be adjusted by adjusting the connection position between the connecting rod 29 and the base 11, so that the sprocket 27 on the extension shaft 26 and the sprocket 27 on the main shaft 13 can rotate synchronously, while keeping the chain 28 in a stable tensioned state. The chain 28 needs to be lubricated and maintained regularly to avoid large errors in the transmission between the sprocket 27 and the chain 28.

[0048] Motor 25 is an asynchronous motor controlled by a PLC system, which can control the speed, start and stop of motor 25. At the same time, when rolling bar 1, rolling oil needs to be sprayed at the contact position between bar 1 and rolling cylinder 12 to cool the rolling cylinder 12 and bar 1 and reduce friction.

[0049] Furthermore, the stabilizing part includes a partition 30 disposed within the bottom frame 3, a vertical rod 31 disposed on the lower surface of the movable plate 24, the lower end of the vertical rod 31 penetrating through the partition 30, a second spring 32 disposed on the vertical rod 31, the second spring 32 being located between the movable plate 24 and the partition 30, a guide cylinder 33 disposed on the lower surface of the partition 30, and the vertical rod 31 being slidably connected to the guide cylinder 33.

[0050] Spring 22 is always in a compressed state. When motor 25 moves up and down, the extension and compression of spring 22 can support the movable plate 24 and improve the stability of the movable plate 24 when it moves up and down. The guide cylinder 33 can further improve the stability of the vertical rod 31 and the movable plate 24 when they move up and down.

[0051] The rotational speeds of motor 1 (21) and motor 2 (25) need to be set according to the diameter of bar stock 1 and the transmission efficiency. Appropriate rotational speeds must be maintained, and the speeds should not be too high or too low. When the diameter of bar stock 1 is 20 mm and it is made of steel with moderate hardness, the rotational speed of rolling drum 12 is approximately 30 r / min.

[0052] When bar stock 1 is placed on mounting frame 4 and support plate 5, it needs to be manually limited to prevent it from falling off mounting frame 4. When the two rolling cylinders 12 are rolling bar stock 1, the operator needs to release bar stock 1. Bar stock 1 can be clamped and rotated by the action of the two rolling cylinders 12. When the two rolling cylinders 12 are about to move away, the operator needs to be prepared to catch bar stock 1 with their hands in advance to prevent the rolled bar stock 1 from falling.

[0053] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A screw thread rolling device, characterized in that, include: Control panel; A support section is provided on the operating table and is used to place the bar stock for making the screw and to position the bar stock. The rolling section is mounted on the operating table and has two rolling units located on both sides of the support. The two rolling units can move on the operating table in opposite directions. The driving unit is mounted on the operating table. The driving unit is used to drive the two rolling units in the rolling section to rotate synchronously and at the same speed. The two rolling units rotate in the same direction. When the two rolling units are close to each other, the driving unit moves downward and when the two rolling units are far apart, the driving unit moves upward. A stabilizing unit is provided inside the operating table, and the stabilizing unit is used to improve the stability of the drive unit when it moves up and down.

2. The screw thread rolling device according to claim 1, characterized in that, The operating table includes a mounting plate and a base frame, with the mounting plate disposed on the upper surface of the base frame.

3. The screw thread rolling device according to claim 2, characterized in that, The support includes a mounting bracket mounted on a mounting plate. One end of the mounting bracket is provided with a support plate. A movable frame is slidably connected to the mounting bracket. A sleeve is provided on one side of the movable frame. A positioning bolt is threaded into the sleeve. One end of the positioning bolt abuts against the surface of the mounting bracket. A vertical plate is provided on the upper surface of the movable frame. A positioning rod is provided on one side of the vertical plate.

4. The screw thread rolling device according to claim 3, characterized in that, The rolling unit includes a base, on which a rolling cylinder is mounted, and on which a main shaft is mounted. The main shaft is rotatably connected to the base. A guide rail is provided on the lower surface of the base, and a guide groove for the movement of the guide rail is provided on the upper surface of the mounting plate. The rolling unit also includes a connecting unit for connecting two bases. Two connecting units are provided and symmetrically arranged on the mounting plate. Each connecting unit includes a rotating plate, which is rotatably connected to the mounting plate. One end of the base is connected to the rotating plate via a connecting rod. The two ends of the connecting rod are rotatably connected to the base and the rotating plate, respectively. A fixing plate is provided on the mounting plate, and guard plates are provided at both ends of the mounting plate. A lead screw is rotatably connected between the guard plate and the fixing plate. One of the bases is provided with a threaded sleeve that cooperates with the lead screw, and a motor for driving the lead screw to rotate is provided on the guard plate.

5. The screw thread rolling device according to claim 4, characterized in that, A fixing rod is provided between the two guard plates, and a through hole is provided on the base to be slidably connected to the fixing rod. A spring is sleeved on the fixing rod and the spring is located between the two bases.

6. The screw thread rolling device according to claim 4, characterized in that, The drive unit includes a movable plate disposed within a base frame, a second motor disposed on the movable plate, an extension shaft disposed at the output end of the second motor, a through groove for the extension shaft to move up and down on the side of the base frame, sprockets disposed on both the extension shaft and the main shaft, two sprockets disposed on the extension shaft and one sprocket disposed on the main shaft, and a chain for connecting the sprockets of the main shaft and the extension shaft, a through groove disposed on the mounting plate, and a second connecting rod, one end of the second connecting rod being rotatably connected to the base, and the other end of the second connecting rod being rotatably connected to the movable plate after passing through the through groove.

7. The screw thread rolling device according to claim 6, characterized in that, The stabilizing part includes a partition plate disposed within the bottom frame. A vertical rod is disposed on the lower surface of the movable plate, the lower end of the vertical rod passing through the partition plate. A second spring is disposed on the vertical rod, the second spring being located between the movable plate and the partition plate. A guide cylinder is disposed on the lower surface of the partition plate, and the vertical rod is slidably connected to the guide cylinder.

Images