Thread rolling machine with bolt supporting function

Abstract

The utility model relates to the technical field of thread rolling machines, and provides a thread rolling machine with a bolt supporting function, which comprises a base, the top of the base is connected with two groups of sliding seats in a sliding manner, the interiors of the sliding seats are rotatably connected with thread rolling shafts, the rear ends of the sliding seats are fixedly provided with motors A, and the rear ends of the sliding seats are fixedly provided with motors B; a motor A is fixedly mounted at the top of the base through a mounting plate, an output shaft of the motor A is fixedly connected with a thread rolling shaft, a motor B is fixedly mounted at the top of the base through a mounting plate, a threaded rod is fixedly connected to the motor B through an output shaft of the motor B, and two sets of damping and buffering supporting mechanisms are arranged at the top of the base. And when the bolt is placed on the supporting roller, the buffering and damping effects can be achieved through cooperation of a buffering spring, a damping air bag, a pressure stabilizing air bag and other assemblies, and the situation that the supporting roller and the bolt are damaged due to the large impact force when the bolt is heavier and placed on the supporting roller is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of thread rolling machines, and in particular to a thread rolling machine with a bolt supporting function. Background Art

[0002] The thread rolling machine is a multifunctional cold extrusion forming machine tool. The thread rolling machine can perform thread, straight grain, and diagonal grain rolling on the workpiece in the cold state within its rolling force range; rolling of spur gears, helical gears, and helical spline gears; straightening, diameter reduction, rolling and various forming rolling. The thread rolling cold rolling process is an advanced non-cutting process that can effectively improve the intrinsic and surface quality of the workpiece. The radial compressive stress generated during processing can significantly improve the fatigue strength and torsional strength of the workpiece. It is an ideal process with high efficiency, energy saving, and low consumption.

[0003] Currently, most thread rolling machines on the market use mechanical clamping or manual support when rolling bolts, which can easily hinder the rotation of the bolts during the thread rolling process, and may affect the accuracy of the thread rolling forming. When the bolts are heavy, they are easily damaged by collision. Utility Model Content

[0004] The utility model provides a thread rolling machine with a bolt supporting function, which solves the problem of a thread rolling machine with a bolt supporting function in the related technology.

[0005] The technical solution of the utility model is as follows:

[0006] A thread rolling machine with a bolt support function comprises a base, the top of the base is slidably connected with two groups of sliding seats, the sliding seat is rotatably connected with a thread rolling shaft inside, a motor A is fixedly installed at the rear end of the sliding seat, the output shaft of the motor A is fixedly connected to the thread rolling shaft, a motor B is fixedly installed on the top of the base through a mounting plate, the motor B is fixedly connected with a threaded rod through its output shaft, two groups of shock-absorbing and buffering support mechanisms are arranged on the top of the base, the shock-absorbing and buffering support mechanisms comprise a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a fixed seat, a buffer spring is arranged inside the fixed seat, the inside of the fixed seat is slidably connected with a support seat through a buffer spring, the top of the support seat is fixedly connected with a bracket, the inner side of the bracket is rotatably connected with a support roller, a shock-absorbing airbag and a pressure-stabilizing airbag are fixedly connected to the inner bottom of the fixed seat, and a rebound reduction mechanism is arranged at both the front and rear ends of the support seat.

[0007] The two groups of sliding seats are both threadedly connected to the threaded rods through threads, and the threads inside the two groups of sliding seats are in opposite directions. When the threaded rods rotate, the two groups of sliding seats will move closer or farther away from each other, making the two groups of rolling shafts closer or farther away.

[0008] The two groups of thread rolling shafts have the same diameter and are initially located on the same horizontal plane. When the two groups of motors B drive the two groups of thread rolling shafts to rotate, thread rolling can be performed on the bolts squeezed by the two groups of thread rolling shafts.

[0009] The shock-absorbing airbag is square in shape as a whole, and the top of the shock-absorbing airbag is in conflict with the bottom of the support seat in an initial state. When the support seat moves downward under impact, its bottom presses down the shock-absorbing airbag, thereby transmitting the impact force to the shock-absorbing airbag.

[0010] The inner side of the pressure-stabilizing airbag is in contact with the outer surface of the corner of the shock-absorbing airbag, and the pressure-stabilizing airbag can control the direction of the shock-absorbing airbag when it is deformed.

[0011] The surface of the support roller is smooth, and the length of the support roller is less than the length of the thread rolling shaft. The support roller can be used to support the bolt when the bolt is thread rolling.

[0012] The rebound reduction mechanism includes a fixed block and a deceleration block. The fixed block is fixedly connected to the support seat. A groove is provided at one end of the fixed block away from the support seat. A telescopic spring is provided inside the groove. An arc block is slidably connected inside the groove through the telescopic spring. The deceleration block is fixedly connected to the inner wall of the fixed seat.

[0013] In the initial state, one-half of the arc block is located outside the groove, and the end of the arc block away from the telescopic spring is close to the deceleration block in the initial state. When the fixed block moves downward with the support seat, the end of the arc block away from the telescopic spring will contact the deceleration block.

[0014] The arc surface of the arc block faces downward, and the depth of the groove is greater than the length of the arc block. When the arc surface of the arc block is squeezed, it will move into the groove, and the arc block can be completely retracted into the groove.

[0015] The deceleration block is semi-cylindrical in shape as a whole, and is made of elastic rubber material. When the top of the arc block is squeezed by the semi-cylindrical rubber deceleration block, resistance will be brought to the movement of the support seat.

[0016] The working principle and beneficial effects of the utility model are:

[0017] 1. The utility model is provided with a shock-absorbing and buffering support mechanism, so that the bolt can be supported by the support roller. When the bolt is placed on the support roller, the buffer spring, the shock-absorbing airbag, the pressure-stabilizing airbag and other components cooperate to achieve the effect of buffering and shock reduction, thereby preventing the support roller and the bolt from being damaged by the large impact force when the heavy bolt is placed on the support roller.

[0018] 2. The utility model is provided with a rebound reduction mechanism, so that the amplitude and speed of the support seat rebounding upward after the buffer spring and the shock-absorbing airbag absorb the impact force can be reduced through the cooperation of components such as the fixed block, the telescopic spring, the arc block, and the deceleration block, thereby preventing the buffer spring and the shock-absorbing airbag from absorbing too much impact force and causing the support seat to bounce up and down, thereby further improving the buffering and shock-absorbing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 This is a three-dimensional front view of the overall structure of the utility model

[0021] Figure 2 It is a three-dimensional back view of the overall structure of the utility model;

[0022] Figure 3 It is a three-dimensional schematic diagram of the structure of the shock-absorbing and buffering support mechanism of the utility model;

[0023] Figure 4 It is a three-dimensional cross-sectional view of the structure of the shock-absorbing and buffering support mechanism of the utility model;

[0024] Figure 5 It is a three-dimensional schematic diagram of the structure of the rebound reduction mechanism of the utility model.

[0025] In the figure: 1. base; 2. sliding seat; 3. thread rolling shaft; 4. motor A; 5. motor B; 6. threaded rod; 7. shock-absorbing and buffering support mechanism; 71. hydraulic cylinder; 72. fixed seat; 73. buffer spring; 74. support seat; 75. bracket; 76. support roller; 77. shock-absorbing airbag; 78. pressure-stabilizing airbag; 8. rebound reduction mechanism; 81. fixed block; 82. groove; 83. telescopic spring; 84. arc block; 85. deceleration block. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] like Figure 1 to Figure 4As shown, this embodiment proposes a thread rolling machine with a bolt supporting function, including a base 1, two groups of sliding seats 2 are slidably connected to the top of the base 1, and the sliding seats 2 are internally rotatably connected to the thread rolling shaft 3, and the rear end of the sliding seat 2 is fixedly installed with a motor A4, and the output shaft of the motor A4 is fixedly connected to the thread rolling shaft 3. A motor B5 is fixedly installed on the top of the base 1 through a mounting plate. The diameters of the two groups of thread rolling shafts 3 are equal, and the two groups of thread rolling shafts 3 are initially on the same horizontal plane. When the two groups of motors B5 drive the two groups of thread rolling shafts 3 to rotate, the bolts squeezed by the two groups of thread rolling shafts 3 can be threaded. The motor B5 is fixedly connected with a threaded rod 6 through its output shaft. The inside of the two groups of sliding seats 2 are threadedly connected to the threaded rod 6 by providing threads, and the internal threads of the two groups of sliding seats 2 are in opposite directions. When the threaded rod 6 rotates, it will drive the two groups of sliding seats 2 to move closer or farther away from each other, so that the two groups of thread rolling shafts 3 are closer or farther away. Two groups of shock-absorbing and buffering support mechanisms 7 are provided on the top of the base 1. The shock-absorbing and buffering support mechanism 7 includes a hydraulic cylinder 71, the output end of the hydraulic cylinder 71 is fixedly connected to a fixed seat 72, a buffer spring 73 is arranged inside the fixed seat 72, the inside of the fixed seat 72 is slidably connected to a support seat 74 through the buffer spring 73, the top of the support seat 74 is fixedly connected to a bracket 75, the inner side of the bracket 75 is rotatably connected to a support roller 76, the surface of the support roller 76 is smooth, and the length of the support roller 76 is less than the length of the thread rolling shaft 3, the support roller 76 can be used to support the bolt when the bolt is thread rolling, the inner bottom of the fixed seat 72 is fixed A shock-absorbing airbag 77 and a pressure-stabilizing airbag 78 are connected. The shock-absorbing airbag 77 is square in shape as a whole, and the top of the shock-absorbing airbag 77 is in conflict with the bottom of the support seat 74 in the initial state. When the support seat 74 moves downward under impact, its bottom presses down on the shock-absorbing airbag 77, thereby transmitting the impact force to the shock-absorbing airbag 77. The inner side of the pressure-stabilizing airbag 78 fits with the outer surface of the corners of the shock-absorbing airbag 77. The pressure-stabilizing airbag 78 can control the direction of the deformation of the shock-absorbing airbag 77. Rebound reduction mechanisms 8 are provided at the front and rear ends of the support seat 74.

[0029] In this embodiment, the motor B5 is turned on to drive the threaded rod 6 to rotate. The rotation of the threaded rod 6 will drive the two sets of sliding seats 2 to move closer or farther to adjust the distance between the two sets of thread rolling shafts 3. The hydraulic cylinder 71 is turned on to drive the fixed seat 72 to move upward or downward to adjust the height of the support roller 76. The bolts are supported by the two sets of support rollers 76. Then, the motor A4 can be turned on to drive the thread rolling shaft 3 to rotate. The bolts are threaded by the two sets of rotating thread rolling shafts 3. When the heavier bolts are placed on the support roller 76, the support roller 76 is subjected to The impact will cause the support seat 74 to move downward, and the downward movement of the support seat 74 will cause the buffer spring 73 to absorb the impact force and gradually tighten. At the same time, when the support seat 74 moves downward under the impact, its bottom presses down the shock-absorbing airbag 77, thereby transmitting the impact force to the shock-absorbing airbag 77. The pressure-stabilizing airbag 78 can control the direction of the deformation of the shock-absorbing airbag 77, and play a shock-absorbing and buffering role through the cooperation of the buffer spring 73 and the shock-absorbing airbag 77, thereby preventing damage to the support roller 76 and the bolt due to the large impact force when the heavy bolt is placed on the support roller 76.

[0030] Example 2

[0031] like Figure 3 to Figure 5 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes a rebound mitigation mechanism 8, which includes a fixed block 81 and a deceleration block 85. The fixed block 81 is fixedly connected to the support seat 74, and a groove 82 is provided at one end of the fixed block 81 away from the support seat 74. A telescopic spring 83 is arranged inside the groove 82, and an arc block 84 is slidably connected to the inside of the groove 82 through the telescopic spring 83. The arc surface of the arc block 84 is downward, and the depth of the groove 82 is greater than the length of the arc block 84. When the arc surface of the arc block 84 is squeezed, it will move into the groove 82, and the arc block 84 can be completely retracted into the groove. In the groove 82, the speed reduction block 85 is fixedly connected to the inner wall of the fixed seat 72. In the initial state, one-half of the arc block 84 is located outside the groove 82, and the end of the arc block 84 away from the telescopic spring 83 is close to the speed reduction block 85 in the initial state. When the fixed block 81 moves downward with the support seat 74, the end of the arc block 84 away from the telescopic spring 83 will contact the speed reduction block 85. The speed reduction block 85 is semi-cylindrical as a whole, and the material of the speed reduction block 85 is elastic rubber material. When the top of the arc block 84 is squeezed with the speed reduction block 85 made of semi-cylindrical rubber material, it will bring resistance to the movement of the support seat 74.

[0032] When the support seat 74 is impacted and moves downward, the fixed block 81 moves downward with the support seat 74, causing the arc block 84 to contact the end of the telescopic spring 83 away from the deceleration block 85. At this time, the arc surface of the arc block 84 is squeezed by the deceleration block 85 and shrinks into the groove 82 without generating too much resistance to affect the buffer spring 73 and the shock-absorbing airbag 77 to absorb the impact force. Subsequently, the telescopic spring 83 drives the arc block 84 to pop out and recover. When the buffer spring 73 and the shock-absorbing airbag 77 absorb the impact force and drive the support seat 74 to rebound upward, the top straight surface of the arc block 84 will be squeezed by the deceleration block 85 made of semi-cylindrical rubber material. At this time, it will bring resistance to the upward movement of the support seat 74, preventing the buffer spring 73 and the shock-absorbing airbag 77 from absorbing more impact force, causing the support seat 74 to bounce up and down, thereby further improving the buffering and shock-absorbing performance.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thread rolling machine with a bolt supporting function, characterized in that: The invention comprises a base (1), the top of the base (1) is slidably connected to two groups of sliding seats (2), the inside of the sliding seat (2) is rotatably connected to a thread rolling shaft (3), a motor A (4) is fixedly mounted on the rear end of the sliding seat (2), the output shaft of the motor A (4) is fixedly connected to the thread rolling shaft (3), a motor B (5) is fixedly mounted on the top of the base (1) via a mounting plate, the motor B (5) is fixedly connected to a threaded rod (6) via its output shaft, and two groups of shock absorbing and buffering support mechanisms (7) are arranged on the top of the base (1); The shock-absorbing and buffering support mechanism (7) comprises a hydraulic cylinder (71), the output end of the hydraulic cylinder (71) is fixedly connected to a fixed seat (72), a buffer spring (73) is arranged inside the fixed seat (72), the inside of the fixed seat (72) is slidably connected to a support seat (74) via the buffer spring (73), the top of the support seat (74) is fixedly connected to a bracket (75), the inner side of the bracket (75) is rotatably connected to a support roller (76), the bottom of the fixed seat (72) is fixedly connected to a shock-absorbing airbag (77) and a pressure-stabilizing airbag (78), and the front and rear ends of the support seat (74) are both provided with a rebound mitigation mechanism (8).

2. A thread rolling machine with a bolt supporting function according to claim 1, characterized in that: The interiors of the two groups of sliding seats (2) are both threadedly connected to the threaded rod (6) by being provided with threads, and the directions of the threads inside the two groups of sliding seats (2) are opposite.

3. A thread rolling machine with a bolt supporting function according to claim 2, characterized in that: The two groups of thread rolling shafts (3) have the same diameter, and the two groups of thread rolling shafts (3) are located on the same horizontal plane in an initial state.

4. A thread rolling machine with a bolt supporting function according to claim 3, characterized in that: The shock-absorbing airbag (77) is square in shape as a whole, and the top of the shock-absorbing airbag (77) is in abutment with the bottom of the support seat (74) in an initial state.

5. A thread rolling machine with a bolt supporting function according to claim 4, characterized in that: The inner side of the pressure-stabilizing airbag (78) fits the outer surface of the corner of the shock-absorbing airbag (77).

6. A thread rolling machine with a bolt supporting function according to claim 5, characterized in that: The surface of the support roller (76) is smooth, and the length of the support roller (76) is smaller than the length of the thread rolling shaft (3).

7. A thread rolling machine with a bolt supporting function according to claim 6, characterized in that: The rebound mitigation mechanism (8) comprises a fixed block (81) and a deceleration block (85); the fixed block (81) is fixedly connected to the support seat (74); a groove (82) is provided at one end of the fixed block (81) away from the support seat (74); a telescopic spring (83) is provided inside the groove (82); an arc block (84) is slidably connected inside the groove (82) via the telescopic spring (83); and the deceleration block (85) is fixedly connected to the inner wall of the fixed seat (72).

8. The thread rolling machine with bolt supporting function according to claim 7, characterized in that: In the initial state, one half of the arc block (84) is located outside the groove (82), and in the initial state, one end of the arc block (84) away from the telescopic spring (83) is close to the deceleration block (85).

9. The thread rolling machine with bolt supporting function according to claim 8, characterized in that: The arc surface of the arc block (84) faces downward, and the depth of the groove (82) is greater than the length of the arc block (84).

10. The thread rolling machine with bolt supporting function according to claim 9, characterized in that: The deceleration block (85) is semi-cylindrical in shape as a whole, and is made of elastic rubber material.

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