High-stability bolt thread rolling device
By designing an automated bolt rolling device, which utilizes support components and hydraulic cylinders to achieve automated bolt feeding and rolling friction, safety hazards and misalignment issues in bolt processing are resolved, and processing stability and accuracy are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANDAN GUFENG FASTENER MFG CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-05
AI Technical Summary
In current bolt thread rolling processes, the operator manually feeds the bolt, posing a safety hazard. Bolt misalignment affects processing accuracy and reduces production quality.
Design a bolt rolling device including a fixed support plate, a sliding bracket and a support assembly. The bolt is supported and fixed by the support assembly. The feeding is automated by using hydraulic cylinders and air cylinders to reduce manual operation. Rolling friction is used to reduce friction and avoid skewing.
It improves the stability and precision of bolt processing, reduces safety hazards, and enhances processing quality and equipment applicability.
Smart Images

Figure CN224322286U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bolt thread rolling technology, specifically a highly stable bolt thread rolling device. Background Technology
[0002] In existing technology, when performing thread rolling on bolts, the operator needs to hold the bolt and feed it between two rolling rollers. The two rolling rollers move close to each other to roll the bolt. When the bolt contacts the rolling rollers, it will rotate. If the operator does not loosen the bolt in time, the bolt head can easily hit the operator's hand, which is dangerous. When the bolt contacts the rolling rollers, the force will move downwards, and the bolt is prone to deflection, which will affect the accuracy of thread processing and reduce the production quality. Utility Model Content
[0003] The purpose of this invention is to solve the above-mentioned problems by designing a highly stable bolt thread rolling device.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A highly stable bolt thread rolling device, comprising:
[0006] Fixed support plate;
[0007] A sliding bracket, wherein a linear slide is installed at the bottom of the fixed support plate, and one end of the sliding bracket is fixedly connected to a slider on the linear slide to allow the sliding bracket to slide.
[0008] A support assembly for stabilizing bolts, the support assembly being mounted on a sliding bracket so that the support assembly moves with the sliding bracket.
[0009] The linear slide is installed at the bottom of the fixed support plate to prevent debris generated during tapping from falling onto the linear slide and affecting its operation. The bolt is supported by the support assembly, eliminating the need for manual handling of the screw, reducing safety hazards, and preventing the bolt head from hitting the operator's hand when the bolt rotates. This improves the stability of the bolt, prevents it from skewing, and keeps the radial direction of the bolt always horizontal, thus improving the accuracy and quality of thread processing.
[0010] Furthermore, the support assembly includes two support rollers, a hydraulic cylinder is mounted on the sliding bracket, a lifting plate is mounted on the top of the piston rod of the hydraulic cylinder, two roller supports are mounted on the lifting plate, there is a gap between the two roller supports, the two support rollers are rotatably connected to the two roller supports respectively, a multi-stage telescopic cylinder is mounted on one side of the surface of the sliding bracket, a lifting top plate is fixedly connected to the top of the telescopic end of the multi-stage telescopic cylinder, two fixed supports are fixedly connected to the bottom of the lifting top plate, and a pressing roller is rotatably connected to the two fixed supports.
[0011] The bolts and the clamping rollers and support rollers experience rolling friction, which reduces the friction on the bolts. The threaded parts do not contact the clamping rollers and support rollers, avoiding wear on the threads and improving the processing quality.
[0012] Furthermore, the support assembly also includes a support guide plate fixedly installed at the center of the surface of the fixed support plate. The top of the support guide plate is arc-shaped. Two rows of universal ball bearings are installed at the bottom of the cross arm of the sliding bracket. The two rows of universal ball bearings are located on both sides above the support guide plate. The top of the support guide plate is in contact with the universal ball bearings.
[0013] The sliding bracket is supported and guided by a universal ball bearing and a support guide plate, which prevents the sliding bracket from bending and deforming, thus improving the smoothness of the sliding bracket's movement. The top of the support guide plate is arc-shaped, so debris falling on the top of the support guide plate falls off due to the arc shape, preventing debris from remaining on the top of the support guide plate and affecting the movement of the sliding bracket.
[0014] Furthermore, a reinforcing strut is fixedly connected at the corner of the sliding bracket.
[0015] The strength of the sliding bracket is improved by reinforcing the struts, which prevents the sliding bracket from bending and deforming, and increases its service life.
[0016] Furthermore, the support rollers and the pressing rollers are the same size and shape, and the two pressing rollers are symmetrical about their vertical positions to the two support rollers.
[0017] The bolts are supported and fixed by two support rollers and a clamping roller, which is suitable for bolts of different sizes and specifications, thus improving applicability.
[0018] Furthermore, the vertical arm end of the sliding bracket is equipped with a second universal ball bearing, which contacts the side wall of the fixed support plate.
[0019] The use of universal ball bearings reduces the friction of the sliding bracket movement, improving the smoothness of movement. Attached Figure Description
[0020] Figure 1 An enlarged side view of the supporting component.
[0021] Figure 2 This is a front view of the fixed support plate and support components.
[0022] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle.
[0023] Figure 4 for Figure 2 A magnified view of a section at point B.
[0024] In the diagram: 1. Fixed support plate; 2. Sliding bracket; 3. Linear slide; 4. Support assembly; 5. Support roller; 6. Hydraulic cylinder; 7. Lifting plate; 8. Roller support; 9. Multi-stage telescopic cylinder; 10. Lifting top plate; 11. Fixed support; 12. Pressing roller; 13. Support guide plate; 14. Universal ball bearing 1; 15. Reinforcing strut; 16. Universal ball bearing 2. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0027] This utility model provides, for example Figure 1-4 The illustrated high-stability bolt thread rolling device includes:
[0028] Fixed support plate 1;
[0029] The sliding bracket 2 has a linear slide 3 installed at the bottom of the fixed support plate 1. One end of the sliding bracket 2 is fixedly connected to the slider on the linear slide 3 so that the sliding bracket 2 can slide.
[0030] Support component 4 is used to stabilize the bolt. Support component 4 is mounted on sliding bracket 2 so that support component 4 moves with sliding bracket 2.
[0031] The fixed support plate 1 is fixedly installed on the frame of the thread rolling machine, and the support assembly 4 is located directly below the two rolling rollers. When tapping the bolt, the bolt is supported and fixed by the support assembly 4. The linear slide 3 is installed at the bottom of the fixed support plate 1 to prevent the debris generated during tapping from falling on the linear slide 3 and affecting its operation. When the linear slide 3 starts working, the linear slide 3 drives the slider to move the sliding bracket 2. The sliding bracket 2 drives the support assembly 4 and the bolt to move, moving the part of the bolt that needs to be tapped between the two rolling rollers. The bolt is tapped by the rolling rollers, and the bolt is supported by the support assembly 4. There is no need for manual handling of the bolt, which reduces safety hazards and prevents the bolt head from hitting the operator's hand when the bolt rotates. This improves the stability of the bolt, prevents the bolt from deflecting, keeps the radial direction of the bolt horizontal, improves the accuracy of thread processing, and improves the processing quality.
[0032] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2 The support assembly 4 includes two support rollers 5. A hydraulic cylinder 6 is installed on the sliding bracket 2. A lifting plate 7 is installed at the top of the piston rod of the hydraulic cylinder 6. Two roller supports 8 are installed on the lifting plate 7. There is a gap between the two roller supports 8. The two support rollers 5 are rotatably connected to the two roller supports 8 respectively. A multi-stage telescopic cylinder 9 is installed on one side of the surface of the sliding bracket 2. A lifting top plate 10 is fixedly connected to the top of the telescopic end of the multi-stage telescopic cylinder 9. Two fixed supports 11 are fixedly connected to the bottom of the lifting top plate 10. A pressing roller 12 is rotatably connected to the two fixed supports 11.
[0033] When tapping the bolt, first activate the hydraulic cylinder 6. The piston rod of the hydraulic cylinder 6 drives the lifting plate 7 to rise and fall. The lifting plate 7 drives the two idler roller supports 8 and the support rollers 5 to rise and fall. When the bolt is placed on the two support rollers 5, the shank of the bolt is located between the two rolling rollers. The operator places the shank of the bolt on the two support rollers 5, with the head of the bolt at the front end of the support rollers 5. The multi-stage telescopic cylinder 9 starts working. The telescopic end of the multi-stage telescopic cylinder 9 retracts, causing the lifting top plate 10 to descend. The lifting top plate 10 drives the two fixed supports 11 and the pressing rollers 12 to descend. The pressing rollers 12 press on the shank of the bolt. The bolt is supported and fixed by two clamping rollers 12 and support rollers 5. The linear slide 3 starts to work. The linear slide 3 drives the slider to move the sliding bracket 2. The sliding bracket 2 drives the support assembly 4 and the bolt to move, moving the part of the bolt that needs to be tapped between the two rolling rollers. The bolt is tapped by the rolling rollers. During tapping, the bolt, clamping rollers 12 and support rollers 5 rotate together. There is rolling friction between the bolt and the clamping rollers 12 and support rollers 5, which reduces the friction on the bolt. The threaded part does not contact the clamping rollers 12 and support rollers 5, avoiding wear on the thread and improving the processing quality.
[0034] Refer to the instruction manual appendix Figure 3 Included with instruction manual Figure 4 The support assembly 4 also includes a support guide plate 13 fixedly installed at the center of the surface of the fixed support plate 1. The top of the support guide plate 13 is arc-shaped. Two rows of universal balls 14 are installed at the bottom of the cross arm of the sliding bracket 2. The two rows of universal balls 14 are located on both sides above the support guide plate 13. The top of the support guide plate 13 is in contact with the universal balls 14.
[0035] When the sliding bracket 2 moves, the universal ball bearing 14 and the support guide plate 13 support and guide the sliding bracket 2, preventing the sliding bracket 2 from bending and deforming, and improving the smoothness of the movement of the sliding bracket 2. The top of the support guide plate 13 is arc-shaped, and the debris falling on the top of the support guide plate 13 falls off due to the arc shape, preventing the debris from remaining on the top of the support guide plate 13 and thus avoiding affecting the movement of the sliding bracket 2.
[0036] Refer to the instruction manual appendix Figure 1 A reinforcing strut 15 is fixedly connected at the corner of the sliding bracket 2.
[0037] The strength of the sliding bracket 2 is improved by strengthening the support rod 15, which prevents the sliding bracket 2 from bending and deforming, and increases its service life.
[0038] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2 The support roller 5 and the pressing roller 12 are the same size and shape, and the two pressing rollers 12 and the two support rollers 5 are symmetrical in their vertical positions.
[0039] The bolts are supported and fixed by two support rollers 5 and a pressing roller 12, which is suitable for bolts of different sizes and specifications, thus improving applicability.
[0040] Refer to the instruction manual appendix Figure 1 The vertical arm end of the sliding bracket 2 is equipped with universal ball bearing 16, which contacts the side wall of the fixed support plate 1.
[0041] The use of universal ball bearing 216 reduces the friction of the sliding bracket 2 during movement, thus improving the smoothness of movement.
[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A highly stable bolt thread rolling device, characterized in that, include: Fixed support plate (1); The sliding bracket (2) has a linear slide (3) installed at the bottom of the fixed support plate (1). One end of the sliding bracket (2) is fixedly connected to the slider on the linear slide (3) so that the sliding bracket (2) can slide. Support component (4) is used to stabilize the bolt. The support component (4) is provided on the sliding bracket (2) so that the support component (4) moves with the sliding bracket (2).
2. The high-stability bolt thread rolling device according to claim 1, characterized in that, The support assembly (4) includes two support rollers (5), a hydraulic cylinder (6) is installed on the sliding bracket (2), a lifting plate (7) is installed on the top of the piston rod of the hydraulic cylinder (6), two roller supports (8) are installed on the lifting plate (7), there is a gap between the two roller supports (8), the two support rollers (5) are rotatably connected to the two roller supports (8) respectively, a multi-stage telescopic cylinder (9) is installed on one side of the surface of the sliding bracket (2), a lifting top plate (10) is fixedly connected to the top of the telescopic end of the multi-stage telescopic cylinder (9), two fixed supports (11) are fixedly connected to the bottom of the lifting top plate (10), and a pressing roller (12) is rotatably connected to the two fixed supports (11).
3. The high-stability bolt thread rolling device according to claim 1, characterized in that, The support assembly (4) also includes a support guide plate (13) fixedly installed at the center of the surface of the fixed support plate (1). The top of the support guide plate (13) is arc-shaped. Two rows of universal ball bearings (14) are installed at the bottom of the cross arm of the sliding bracket (2). The two rows of universal ball bearings (14) are located on both sides above the support guide plate (13). The top of the support guide plate (13) is in contact with the universal ball bearings (14).
4. The high-stability bolt thread rolling device according to claim 1, characterized in that, A reinforcing strut (15) is fixedly connected at the corner of the sliding bracket (2).
5. The high-stability bolt thread rolling device according to claim 2, characterized in that, The support roller (5) and the pressing roller (12) are the same size and shape, and the two pressing rollers (12) and the two support rollers (5) are symmetrical in their vertical positions.
6. The high-stability bolt thread rolling device according to claim 1, characterized in that, The vertical arm end of the sliding bracket (2) is equipped with a universal ball bearing (16), which is in contact with the side wall of the fixed support plate (1).