Gear transmission positioning baffle for thread rolling machine

Abstract

This invention relates to the field of thread rolling machine technology and discloses a gear-driven positioning baffle for a thread rolling machine, comprising a frame, a reducer and a drive motor mounted on the top of the frame, the reducer being fixedly connected to a thread rolling head via an output shaft, a vise being mounted on the right side of the thread rolling head, and the vise being mounted on the top of the frame; a support base is fixedly connected to the top of the frame, the support base containing a rack, a gear meshing on the surface of the rack, and a connecting shaft rotatably connected to the center of the gear, allowing the gear to rotate relative to the connecting shaft. This gear-driven positioning baffle for a thread rolling machine opens and closes by utilizing gear meshing. It can be opened during forward operation and closed during reversal, resulting in a simple structure and low cost. Alternatively, it can be combined with a cylinder to raise and lower the positioning baffle using gear transmission, making the structure simpler and more practical than existing technologies, and also lower in cost.

Description

Technical Field

[0001] This invention relates to the field of thread rolling machine technology, specifically to a gear transmission positioning baffle for a thread rolling machine. Background Technology

[0002] A thread rolling machine is a multi-functional cold extrusion forming machine tool. Within its rolling pressure range, it can perform thread rolling, straight knitting, and oblique knitting on workpieces in a cold state; roll spur gears, helical gears, and helical spline gears; straighten, reduce diameter, burnish, and perform various forming rolls. The machine has a safe and reliable circuit and control system, allowing each work cycle to be selected in manual, semi-automatic, and automatic modes.

[0003] Currently, some thread rolling machines use a cylinder-driven method to open and close the positioning baffle. Specifically, compressed air is supplied by an air compressor, and a solenoid valve controls the extension and retraction of the cylinder, thereby pulling the baffle. However, this cylinder-driven positioning baffle has the following significant drawbacks:

[0004] First, the structure is complex, requiring a matching air compressor, cylinder, solenoid valve, and corresponding circuit and control system. The whole has many components and is complicated to assemble.

[0005] Second, it is relatively large in size and occupies equipment space, which is especially difficult for small or compact thread rolling machines to arrange.

[0006] Third, the cost is high. The cost of components such as air compressors, cylinders, and solenoid valves is high, and subsequent maintenance and energy consumption also increase the cost of use.

[0007] Fourth, its transmission method is pneumatic linkage pull, not gear transmission, resulting in poor action accuracy and synchronization, making it difficult to achieve precise linkage with the working stroke of the thread rolling machine. Summary of the Invention

[0008] The purpose of this invention is to provide a gear-driven positioning baffle for a thread rolling machine to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a gear transmission positioning baffle for a thread rolling machine, comprising a frame, a reducer and a drive motor being provided on the top of the frame, the reducer being fixedly connected to a thread rolling head via an output shaft, and a vise being provided on the right side of the thread rolling head, the vise being located on the top of the frame;

[0010] A support base is fixedly connected to the top of the frame. A rack is provided inside the support base. A gear meshes on the surface of the rack. A connecting shaft is rotatably connected to the center of the gear. The gear can rotate relative to the connecting shaft. The connecting shaft is fixedly connected to the support base. A second positioning baffle body is fixedly connected to the surface of the gear. The gear rotates relative to the rack, thereby driving the second positioning baffle body to rise and fall.

[0011] Preferably, the support base has a through hole, and a first positioning baffle body is inserted into the through hole. The support base also has an upper positioning plate and a lower positioning plate, which are fixed to the inner wall of the support base. The rack is movably disposed between the upper and lower positioning plates and can slide relative to the upper and lower positioning plates. An open receiving groove is provided on the right side of the rack, and two support rollers are disposed in the receiving groove. A support shaft is rotatably connected to the center of the right support roller. The support shaft is fixedly connected to the upper and lower positioning plates and passes through the rack and the receiving groove. The rack can move relative to the support shaft. The left support roller is movably disposed in the receiving groove.

[0012] Preferably, the left support roller and the right support roller are disposed on both sides of the first positioning baffle body.

[0013] Preferably, the rack has grooves on both the upper and lower sides, and the support shaft is disposed in the grooves.

[0014] Preferably, a guide rail is provided on the top of the frame, and a slider is provided on the guide rail. The slider is fixedly connected to the reducer. The drive motor, the reducer and the thread rolling head can slide on the guide rail through the slider. The first positioning baffle body is fixedly connected to the reducer, and the slider drives the first positioning baffle body to slide on the guide rail.

[0015] The drive motor, the reducer, and the thread rolling head move forward on the guide rail via a slider. The slider synchronously drives the first positioning baffle body to move forward. The first positioning baffle body drives the left support roller to move to the left. The left support roller then drives the rack to slide to the left. The rack drives the gear to rotate. The gear drives the second positioning baffle body to rise.

[0016] The drive motor, the reducer, and the thread rolling head move backward on the guide rail via a slider. The slider synchronously drives the first positioning baffle body to move backward. The second positioning baffle body falls down due to its own weight, causing the gear to rotate. The gear drives the rack to slide to the right, and the rack in turn drives the left support roller to move to the right.

[0017] Preferably, the first positioning baffle body is fixedly connected to the reducer via a fixing plate.

[0018] Preferably, a cylinder is fixedly connected to the surface of the support base, and the output shaft of the cylinder is fixedly connected to the rack. The cylinder drives the rack to move forward and backward. When the cylinder drives the rack to move forward, the rack drives the gear to rotate, thereby causing the second positioning baffle body to rise. When the cylinder drives the rack to move backward, the rack drives the gear to rotate, thereby causing the second positioning baffle body to fall down.

[0019] Compared with the prior art, the present invention provides a gear transmission positioning baffle for a thread rolling machine, which has the following advantages:

[0020] 1. This invention employs a dual-set independent positioning baffle assembly consisting of a purely mechanical gear drive and a pneumatically driven gear drive. This assembly can be flexibly replaced and installed according to processing conditions. The purely mechanical gear drive positioning baffle assembly meets the low-cost and stable operation requirements of simple, pneumatic-free circuit-free operations, while also adapting to the precise control requirements of automated, high-cycle operations, significantly improving the equipment's versatility and adaptability to various scenarios. The two assemblies are independent of each other, allowing for separate debugging and maintenance, reducing the impact of equipment failures and maintenance costs.

[0021] 2. The pure mechanical gear transmission positioning baffle assembly of the present invention raises and lowers the baffle by utilizing gear meshing. It can be used in conjunction with the thread rolling machine to raise the baffle when it is working forward and lower the baffle when it is not working backward. The structure is simple and the cost is low.

[0022] 3. The pure mechanical gear transmission positioning baffle assembly of this invention relies on rack and pinion meshing transmission to achieve precise conversion between displacement and oscillation. In conjunction with the linear guide sliding stroke of the thread rolling machine, it completes the synchronous lifting and lowering of the positioning baffle, effectively avoiding workpiece discharge interference and positioning offset, and significantly improving the axial positioning accuracy of the workpiece and the quality of thread processing. The overall structure is rigid and the transmission is stable. There are no complex electrical control components, the operation is highly reliable, the service life of the equipment is extended, and the continuous production efficiency of thread rolling is improved. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention from an oblique angle.

[0026] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0027] Figure 4 This is a schematic cross-sectional view of the structure according to Embodiment 1 of the present invention;

[0028] Figure 5 This is a partial structural schematic diagram of an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0030] Figure 7 This is a schematic cross-sectional view of the structure in Embodiment 2 of the present invention.

[0031] In the diagram: 1. Frame; 2. Slider; 3. Drive motor; 4. Reducer; 5. Thread rolling head; 6. Bench vise; 7. Fixing plate; 8. Guide rail; 9. First positioning baffle body; 10. Rack; 11. Support base; 12. Upper positioning plate; 13. Support roller; 14. Second positioning baffle body; 15. Gear; 16. Support shaft; 17. Cylinder; 18. Lower positioning plate; 19. Receiving groove; 20. Slide groove. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] This invention provides a technical solution:

[0034] Example 1:

[0035] Combination Figures 1-5 A gear-driven positioning baffle for a thread rolling machine includes a frame 1. A reducer 4 and a drive motor 3 are provided on the top of the frame 1. The reducer 4 is fixedly connected to a thread rolling head 5 through an output shaft. A vise 6 is provided on the right side of the thread rolling head 5. The vise 6 is located on the top of the frame 1.

[0036] A support base 11 is fixedly connected to the top of the frame 1. A rack 10 is provided inside the support base 11. A gear 15 meshes with the surface of the rack 10. A connecting shaft is rotatably connected to the center of the gear 15. The gear 15 can rotate relative to the connecting shaft. The connecting shaft is fixedly connected to the support base 11. A second positioning baffle body 14 is fixedly connected to the surface of the gear 15. The gear 15 rotates relative to the rack 10, thereby driving the second positioning baffle body 14 to rise and fall.

[0037] Furthermore, the support base 11 has a through hole, through which the first positioning baffle body 9 is inserted. The support base 11 also has an upper positioning plate 12 and a lower positioning plate 18, which are fixed to the inner wall of the support base 11. The rack 10 is movably disposed between the upper positioning plate 12 and the lower positioning plate 18, and can slide relative to the upper positioning plate 12 and the lower positioning plate 18. The rack 10 has an open receiving groove 19 on its right side, in which two support rollers 13 are disposed. The center of the right support roller 13 is rotatably connected to a support shaft 16, which is fixedly connected to the upper positioning plate 12 and the lower positioning plate 18 and passes through the rack 10 and the receiving groove 19. The rack 10 can move relative to the support shaft 16, and the left support roller 13 is movably disposed in the receiving groove 19.

[0038] Furthermore, the left support roller 13 and the right support roller 13 are disposed on both sides of the first positioning baffle body 9.

[0039] Furthermore, the rack 10 has grooves 20 on both the upper and lower sides, and the support shaft 16 is disposed in the grooves 20.

[0040] Furthermore, a guide rail 8 is provided on the top of the frame 1, and a slider 2 is provided on the guide rail 8. The slider 2 is fixedly connected to the reducer 4. The drive motor 3, the reducer 4 and the thread rolling head 5 can slide on the guide rail 8 through the slider 2. The first positioning baffle body 9 is fixedly connected to the reducer 4. The slider 2 drives the first positioning baffle body 9 to slide on the guide rail 8.

[0041] The drive motor 3, reducer 4, and thread rolling head 5 move forward on the guide rail 8 via the slider 2. The slider 2 synchronously drives the first positioning baffle body 9 to move forward. The first positioning baffle body 9 drives the left support roller 13 to move to the left. The left support roller 13 then drives the rack 10 to slide to the left. The rack 10 drives the gear 15 to rotate. The gear 15 drives the second positioning baffle body 14 to rise.

[0042] The drive motor 3, reducer 4, and thread rolling head 5 move backward on the guide rail 8 via the slider 2. The slider 2 synchronously drives the first positioning baffle body 9 to move backward. The second positioning baffle body 14 is lowered due to its own weight, which drives the gear 15 to rotate. The gear 15 drives the rack 10 to slide to the right, and the rack 10 in turn drives the left support roller 13 to move to the right.

[0043] Furthermore, the first positioning baffle body 9 is fixedly connected to the reducer 4 via the fixing plate 7.

[0044] The gear-driven positioning baffle of this thread rolling machine operates as follows:

[0045] When the thread rolling machine rolls threads on rebar, the drive motor 3, reducer 4, and thread rolling head 5 move forward on the guide rail 8 via the slider 2. Simultaneously, the slider 2 drives the first positioning baffle body 9 to move forward. At this time, the first positioning baffle body 9 abuts against the left support roller 13, driving the left support roller 13 to move to the left. The left support roller 13 then drives the rack 10 to slide to the left, which in turn drives the gear 15 to rotate. The gear 15 then drives the second positioning baffle body 14 to rise, and the thread rolling machine begins to work, rolling the rebar. After the thread rolling machine completes the thread rolling, the drive motor 3, reducer 4, and thread rolling head 5 move forward on the guide rail 8 via the slider 2. The slider 2 synchronously drives the first positioning baffle body 9 to move forward. At this time, the first positioning baffle body 9 abuts against the left support roller 13, driving the left support roller 13 to move to the left. The left support roller 13 then drives the rack 10 to slide to the left, driving the gear 10 to rotate. The gear 15 then drives the second positioning baffle body 14 to rise, and the thread rolling machine begins to work, rolling the rebar. After the thread rolling machine completes the thread rolling, the drive motor 3, reducer 4, and thread rolling head 5 move forward on the guide rail 8 via the slider 2. The high-speed machine 4 and the thread rolling head 5 move backward on the guide rail 8 via the slider 2. The slider 2 simultaneously drives the first positioning baffle body 9 to move backward. At this time, the first positioning baffle body 9 stops abutting the left support roller 13, and the second positioning baffle body 14 is lowered due to its own weight. The thread rolling machine ends its work. At this time, the second positioning baffle body 14 is lowered due to its own weight, which drives the gear 15 to rotate. The gear 15 drives the rack 10 to slide to the right. The rack 10 then drives the left support roller 13 to move to the right. At this time, the positional relationship between the rack 10 and the upper positioning plate 12 and the lower positioning plate 18 returns to the initial state.

[0046] Example 2:

[0047] See Figure 6-7 Unlike Embodiment 1, a cylinder 17 is fixedly connected to the surface of the support base 11. The output shaft of the cylinder 17 is fixedly connected to the rack 10. The cylinder 17 drives the rack 10 to move forward and backward. When the cylinder 17 drives the rack 10 to move forward, the rack 10 drives the gear 15 to rotate, thereby causing the second positioning baffle body 14 to rise. When the cylinder 17 drives the rack 10 to move backward, the rack 10 drives the gear 15 to rotate, thereby causing the second positioning baffle body 14 to fall down.

[0048] Example 3:

[0049] This invention Figure 1-5 It uses a purely mechanical gear transmission positioning baffle assembly. Figure 6-7 The system employs a pneumatically driven gear-driven positioning baffle assembly. The two assembly systems operate independently. The purely mechanical gear-driven positioning baffle assembly is used for pure mechanical linkage, working in conjunction with the linear guide sliding stroke of the thread rolling machine to synchronously raise and lower the positioning baffle. This effectively avoids workpiece ejection interference and positioning offset, significantly improving the axial positioning accuracy of the workpiece and the quality of thread processing. The overall structure is highly rigid, with stable transmission, no complex electrical control components, high operational reliability, extended equipment lifespan, and improved continuous production efficiency in thread rolling. The pneumatically driven gear-driven positioning baffle assembly relies on rack and pinion meshing to achieve precise conversion between positioning baffle displacement and oscillation, completing the raising and lowering of the positioning baffle.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A gear-driven positioning baffle for a thread rolling machine, comprising a frame (1), characterized in that: The top of the frame (1) is provided with a reducer (4) and a drive motor (3). The reducer (4) is fixedly connected to a thread rolling head (5) through an output shaft. A vise (6) is provided on the right side of the thread rolling head (5). The vise (6) is located on the top of the frame (1). The top of the frame (1) is fixedly connected to a support base (11), and a rack (10) is provided inside the support base (11). A gear (15) meshes with the surface of the rack (10). A connecting shaft is rotatably connected at the center of the gear (15). The gear (15) can rotate relative to the connecting shaft. The connecting shaft is fixedly connected to the support base (11). A second positioning baffle body (14) is fixedly connected to the surface of the gear (15). The gear (15) rotates relative to the rack (10), thereby driving the second positioning baffle body (14) to rise and fall.

2. The gear transmission positioning baffle for a thread rolling machine according to claim 1, characterized in that: The support base (11) has a through hole, through which a first positioning baffle body (9) is inserted. The support base (11) also has an upper positioning plate (12) and a lower positioning plate (18), which are fixed to the inner wall of the support base (11). A rack (10) is movably disposed between the upper positioning plate (12) and the lower positioning plate (18), and the rack (10) can slide relative to the upper positioning plate (12) and the lower positioning plate (18). The rack (10) has an open receiving groove (19) on the right side. The receiving groove (19) has two support rollers (13) on the left and right. The right support roller (13) is rotatably connected to a support shaft (16) at its center. The support shaft (16) is fixedly connected to the upper positioning plate (12) and the lower positioning plate (18) and passes through the rack (10) and the receiving groove (19). The rack (10) can move relative to the support shaft (16). The left support roller (13) is movably arranged in the receiving groove (19).

3. A gear transmission positioning baffle for a thread rolling machine according to claim 2, characterized in that: The left support roller (13) and the right support roller (13) are located on both sides of the first positioning baffle body (9).

4. A gear transmission positioning baffle for a thread rolling machine according to claim 2, characterized in that: The rack (10) has grooves (20) on both the upper and lower sides, and the support shaft (16) is located in the grooves (20).

5. A gear transmission positioning baffle for a thread rolling machine according to claim 2, characterized in that: The top of the frame (1) is provided with a guide rail (8), and a slider (2) is provided on the guide rail (8). The slider (2) is fixedly connected to the reducer (4). The drive motor (3), the reducer (4) and the thread rolling head (5) can slide on the guide rail (8) through the slider (2). The first positioning baffle body (9) is fixedly connected to the reducer (4). The slider (2) drives the first positioning baffle body (9) to slide on the guide rail (8). The drive motor (3), the reducer (4), and the thread rolling head (5) move forward on the guide rail (8) via the slider (2). The slider (2) synchronously drives the first positioning baffle body (9) to move forward. The first positioning baffle body (9) drives the left support roller (13) to move to the left. The left support roller (13) then drives the rack (10) to slide to the left. The rack (10) drives the gear (15) to rotate. The gear (15) drives the second positioning baffle body (14) to rise. The drive motor (3), the reducer (4), and the thread rolling head (5) move backward on the guide rail (8) via the slider (2). The slider (2) synchronously drives the first positioning baffle body (9) to move backward. The second positioning baffle body (14) is lowered by its own weight, which drives the gear (15) to rotate. The gear (15) drives the rack (10) to slide to the right, and the rack (10) in turn drives the left support roller (13) to move to the right.

6. A gear transmission positioning baffle for a thread rolling machine according to claim 5, characterized in that: The first positioning baffle body (9) is fixedly connected to the reducer (4) through the fixing plate (7).

7. A gear-driven positioning baffle for a thread rolling machine according to claim 1, characterized in that: A cylinder (17) is fixedly connected to the surface of the support base (11). The output shaft of the cylinder (17) is fixedly connected to the rack (10). The cylinder (17) drives the rack (10) to move forward and backward. The cylinder (17) drives the rack (10) to move forward. The rack (10) drives the gear (15) to rotate, thereby driving the second positioning baffle body (14) to rise. The cylinder (17) drives the rack (10) to move backward. The rack (10) drives the gear (15) to rotate, thereby driving the second positioning baffle body (14) to fall down.

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