Fixed-length threading device for construction twisted steel

Abstract

A building threaded steel bar sizing threading device comprises a driving mechanism arranged on a machine base, two guide columns are symmetrically arranged on the two sides of a base, the driving mechanism is installed between the two guide columns in a sliding mode through a sliding block, the output end of the driving mechanism is installed on a rotating chuck, and a driving holding rod is rotationally connected to one side of the machine base. The inner end of a main shaft of the driving holding rod is connected with a gear, and a rack meshed with the gear is arranged on the bottom face of a sliding block on the inner side. A sizing limiting mechanism is mounted on one side of the rotating chuck through a fixing seat; according to the threading device, the limiting rolling wheel is arranged in front of the rotating chuck to limit the forward moving stroke of the rotating chuck, the limiting auxiliary wheel is arranged behind the rotating chuck to fix the initial threading position of the rotating chuck, and therefore the distance between the limiting rolling wheel and the limiting auxiliary wheel is the threading length; the problem that thread machining lengths are uneven due to operation experience is solved, the thread machining quality of the deformed steel bars is improved, and then the butt joint quality of the deformed steel bars is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of processing of building threaded steel bars, and in particular to a device for threading building threaded steel bars to a fixed length. Background Technology

[0002] Rebar is a type of steel commonly used in the construction industry, characterized by raised threads on its surface.

[0003] To increase friction and interlocking force with concrete, thereby improving the overall stability and load-bearing capacity of the structure. During construction, it is often necessary to connect threaded steel bars of different lengths or specifications according to actual needs. Currently, this is mainly done by using a rebar threading machine to process threads on the ends of the rebars, and then connecting the two rebars together using a threaded sleeve to achieve a butt joint. Current threading machines are equipped with cutting devices to cut the ends of the rebars flat to improve the butt joint quality. However, there is a problem that the rebars cannot be temporarily fixed during the cutting process, requiring a clamping table for fixation, which is cumbersome. Furthermore, the processing length of the threads mainly relies on the operator's experience to meet requirements, resulting in inconsistent thread lengths, which needs improvement. Utility Model Content

[0004] To solve the above problems, this utility model proposes a device for threading steel bars to a fixed length.

[0005] The technical solution of this utility model is: a fixed-length threading device for building threaded steel bars, including a drive mechanism mounted on a base. Two guide columns are symmetrically arranged on both sides of the base, and both ends of the guide columns are fixed to the base by supports. The guide columns are spaced a certain distance from the upper surface of the base. The drive mechanism is slidably mounted between the two guide columns via a slider. The drive mechanism includes a motor and a reducer. The output end of the drive mechanism is mounted on a rotary chuck. A drive grip rod is rotatably connected to one side of the base. The drive grip rod includes three evenly distributed grip rods, which are fixedly connected to each other by a main shaft. A gear is connected to the inner end of the main shaft of the drive grip rod. A rack that meshes with the gear is provided on the bottom surface of the inner slider. The direction of the rack is consistent with the length direction of the guide column. A fixed-length limiting mechanism is mounted on one side of the rotary chuck via a fixed seat.

[0006] Preferably, the length-limiting mechanism includes a support rod and a support A vertically arranged on the upper part of the inner side of the fixed base. The support rod is a cylindrical rod, and the support A is located at the outer end of the support rod. A limiting rod is vertically arranged on the upper part of the inner side of the support A, and a limiting roller corresponding to the position of the rotating chuck is provided at the outer end of the limiting rod. The limiting roller is a bearing.

[0007] Preferably, the upper part of the support A is provided with a stepped hole, and the limiting rod is slidably connected in the stepped hole. A limiting ring is provided at the end of the limiting plate. The size of the limiting ring is smaller than the cross-sectional size of the stepped hole. A spring is sleeved on the limiting rod inside the limiting ring, and a synchronizing rod is provided on the upper part of the slider on the outer side. A triangular pushing block is provided on the inner side of the end of the synchronizing rod. The tip of the triangular pushing block is provided with a transition arc. The position of the triangular pushing block corresponds to the outer end of the limiting rod. The outer end of the limiting rod is also provided with a transition arc. The design of the transition arc helps to reduce the friction after the two come into contact.

[0008] Preferably, the lower part of the support A is provided with a sliding hole, through which it is slidably connected to the support rod. A threaded hole is provided at the position corresponding to the sliding hole, and a set screw A is installed in the threaded hole. After loosening the set screw A, the position of the support A can be adjusted on the support rod.

[0009] Preferably, the inner end of the support rod is slidably connected to a support B, and a set screw B is provided on the support B. After loosening the set screw B, the position of the support B on the support rod can be adjusted. The upper part of the inner side of the support B is provided with a limiting auxiliary wheel corresponding to the position of the rotating chuck. The limiting auxiliary wheel and the limiting roller are arranged in corresponding positions.

[0010] Preferably, a U-shaped bracket is provided on the clamping platform at the front end of the machine base. The U-shaped bracket corresponds to the position of the saw disc of the cutting device, and the U-shaped bracket can be matched and inserted into the threaded steel.

[0011] Preferably, a photoelectric sensor is provided in the middle of the base, and a baffle corresponding to the position of the photoelectric sensor is provided on the outer slider. The baffle has an elongated hole, and a screw is threaded into the elongated hole. The position of the top plate is adjusted by the elongated hole and the screw.

[0012] The beneficial technical effects of this utility model are:

[0013] (1) The threading device limits its forward movement by setting a limiting roller in front of the rotating chuck and a limiting auxiliary wheel behind it to fix its threading starting position. Therefore, the distance between the limiting roller and the limiting auxiliary wheel is the threading length, which avoids the problem of inconsistent thread processing length due to operating experience, improves the thread processing quality of the threaded steel, and thus ensures the docking quality of the threaded steel.

[0014] (2) The limiting roller of the threading device adopts an elastic telescopic structure and is driven to extend outward by the triangular push block at the end of the synchronizing rod. When the rotating chuck reaches the threading limit, the limiting roller is pushed out to generate a travel limit. When not threading, the limiting roller is in a retracted avoidance state, which avoids the problem of the limiting roller affecting the threading clamping and chuck maintenance. The operation is more flexible and the use is more convenient. Attached Figure Description

[0015] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0016] Figure 2 This is the second three-dimensional structural schematic diagram of this utility model.

[0017] Figure 3 yes Figure 2 A magnified view of a portion of the image;

[0018] Figure 4 This is a top view of the structure of this utility model;

[0019] Figure 5 yes Figure 4 A schematic diagram of the AA-direction cross-section structure;

[0020] Figure 6 This is a physical image of the utility model.

[0021] In the diagram, 1. Drive mechanism, 11. Rotary chuck, 2. Base, 21. Guide post, 22. Slider, 23. Drive handle, 24. Gear, 25. Rack, 31. Fixed seat, 32. Support rod, 33. Support A, 331. Stepped hole, 34. Limiting rod, 341. Limiting roller, 342. Limiting ring, 35. Spring, 36. Synchronizing rod, 361. Triangular push block, 41. Support B, 42. Limiting auxiliary wheel, 51. Set screw A, 52. Set screw B, 6. Clamping table, 61. U-shaped bracket, 7. Saw blade. Detailed Implementation

[0022] Example 1, see appendix Figure 1-2A threading device for fixed-length rebar in construction includes a drive mechanism 1 mounted on a base 2. Two guide posts 21 are symmetrically arranged on both sides of the base. The drive mechanism 1 is slidably mounted between the two guide posts 21 via a slider 22. The output end of the drive mechanism 1 is mounted on a rotating chuck 11, which is driven to rotate at high speed. A drive lever 23 is rotatably connected to one side of the base 2. A gear 24 is connected to the inner end of the main shaft of the drive lever 23. A rack 25 meshing with the gear 24 is provided on the bottom surface of the inner slider 22. Rotating the drive lever 23 drives the gear 24 to rotate, and the gear 24 drives the slider 22 to slide along the guide posts 21 via the rack 25. The drive mechanism 1 and the rotary chuck 11 move along the guide post 21. A length limiting mechanism is installed on one side of the rotary chuck 11 via a fixed seat 31. The length limiting mechanism includes a support rod 32 and a support A 33 vertically arranged on the upper part of the inner side of the fixed seat 31. The support A 33 is located at the outer end of the support rod 32. A limiting rod 34 is vertically arranged on the upper part of the inner side of the support A 33. A limiting roller 341 corresponding to the position of the rotary chuck 11 is provided at the outer end of the limiting rod 34. At the moment the limiting roller 341 contacts the rotary chuck 11, the rotary chuck 11 is in a rotating state. The rotary roller can rotate under the action of friction, thus relieving the frictional impact between the two.

[0023] A U-shaped bracket 61 is provided on the clamping table 6 at the front end of the machine base 2. The U-shaped bracket 61 corresponds to the position of the saw disc 7 of the cutting device. The U-shaped bracket 61 is used to temporarily hold the end of the threaded steel, and then the cutting device cuts off the end of the threaded steel to ensure that the end face is flush, thereby improving the flatness of the mating surface of the two threaded steels.

[0024] A photoelectric sensor is provided in the middle of the base 2, and a baffle corresponding to the position of the photoelectric sensor is provided on the outer slider 22. When the baffle moves with the slider 22 to the position of the photoelectric sensor, the photoelectric sensor is triggered. The photoelectric sensor transmits the signal to the drive mechanism 1, the drive mechanism 1 stops working, and the rotating chuck 11 stops threading.

[0025] In this embodiment, the threading device is used by placing the threaded steel bar to be processed into the U-shaped bracket 61 on the clamping table 6, pressing down the cutting device to cut off the uneven end face of the threaded steel bar, and then inserting the end of the threaded steel bar into the port of the rotating chuck 11. The clamping table 6 is used to clamp and fix the threaded steel bar, and then rotating the handle rod drives the gear 24 to rotate. The gear 24 drives the slider 22 and the drive mechanism 1 to move along the guide post 21 through the rack 25. During the movement, the drive mechanism 1 drives the rotating chuck 11 to rotate at high speed to realize the threading processing of the end of the threaded steel bar. During the threading process, the limiting roller 341 limits its forward movement stroke, and the limiting auxiliary wheel 42 is set at the rear to fix its threading starting position. Therefore, the distance between the limiting roller 341 and the limiting auxiliary wheel 42 is the threading length, which avoids the problem of uneven thread processing length due to operating experience and improves the thread processing quality of the threaded steel bar.

[0026] Example 2, see appendix Figure 2-3 5. This embodiment is basically the same as embodiment one, and the similarities will not be repeated. The difference is that: the upper part of the support A 33 is provided with a stepped hole 331, and the limiting rod 34 is slidably connected in the stepped hole 331. A limiting ring 342 is provided at the end of the limiting plate. A spring 35 is sleeved on the limiting rod 34 inside the limiting ring 342. The spring 35 provides elastic support for the limiting rod 34, driving its outer end to extend out of the stepped hole 331. A synchronizing rod 36 is provided on the upper part of the outer slider 22. The synchronizing rod 36 moves synchronously along the guide post 21 with the driving mechanism 1 and the slider 22. A triangular push block 361 is provided on the inner side of the end of the synchronizing rod 36. The position of the triangular push block 361 corresponds to the outer end of the limiting rod 34. After the inclined surface of the triangular push block 361 contacts the outer end of the limiting rod 34, it can activate its compression spring 35 to slide inward, pushing out the inner end of the limiting roller 341 and blocking it on the outer side of the rotating chuck 11.

[0027] In this embodiment, the synchronizing rod 36 of the threading device moves along the guide post 21 with the drive mechanism 1. The limiting rod 34 is driven to extend outward by the triangular push block 361 at the end of the synchronizing rod 36. When the rotating chuck 11 reaches the threading limit, the limiting roller 341 is pushed out to generate a travel limit. When not threading, the limiting roller 341 is in a retracted avoidance state, which avoids the problem of the limiting roller 341 affecting the threading clamping and chuck maintenance, making the processing operation more flexible and convenient.

[0028] Example 3, see appendix Figure 2-4This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that: the lower part of the support A 33 is provided with a sliding hole, which is slidably connected to the support rod 32 through the sliding hole. A threaded hole is provided at the position corresponding to the sliding hole, and a set screw A 51 is installed in the threaded hole. By loosening or tightening the set screw A 51, the support A 33 can be adjusted in position on the support rod 32. The inner end of the support rod 32 is slidably connected to the support B 41, and the support B 41 is provided with a set screw B 52. The upper part of the inner side of the support B 41 is provided with a limiting auxiliary wheel 42 corresponding to the position of the rotating chuck 11. By loosening or tightening the set screw B 52, the support B 41 can be adjusted in position on the support rod 32.

[0029] By changing the positions of support A 33 and support B 41 on support rod 32, the distance between them can be adjusted, thereby adjusting the distance between limit roller 341 and limit auxiliary wheel 42, thus adjusting the travel of rotary chuck 11 and changing the processing length of thread. Therefore, the processing length of threaded steel can be adjusted conveniently and quickly according to needs, improving user experience and processing efficiency.

Claims

1. A device for threading steel bars to a fixed length in construction, characterized in that: The device includes a drive mechanism mounted on a base. Two guide pillars are symmetrically arranged on both sides of the base. The drive mechanism is slidably mounted between the two guide pillars via a slider. The output end of the drive mechanism is mounted on a rotary chuck. A drive lever is rotatably connected to one side of the base. A gear is connected to the inner end of the main shaft of the drive lever. A rack that meshes with the gear is provided on the bottom surface of the inner slider. A length-limiting mechanism is mounted on one side of the rotary chuck via a fixed seat.

2. The threading device for fixed-length reinforcing bars in construction according to claim 1, characterized in that: The aforementioned length-limiting mechanism includes a support rod and a support A vertically arranged on the upper part of the inner side of the fixed base. The support A is located at the outer end of the support rod, and a limiting rod is vertically arranged on the upper part of the inner side of the support A. The outer end of the limiting rod is provided with a limiting roller corresponding to the position of the rotating chuck.

3. The threading device for fixed-length reinforcing bars in construction according to claim 2, characterized in that: The upper part of the support A is provided with a stepped hole, and the limiting rod is slidably connected in the stepped hole. A limiting ring is provided at the end of the limiting plate, and a spring is sleeved on the limiting rod inside the limiting ring. A synchronizing rod is provided on the upper part of the outer slider. A triangular pushing block is provided on the inner side of the end of the synchronizing rod, and the position of the triangular pushing block corresponds to the outer end of the limiting rod.

4. The threading device for fixed-length reinforcing bars in construction according to claim 2, characterized in that: The lower part of the support A is provided with a sliding hole, through which it is slidably connected to the support rod. A threaded hole is provided at the position corresponding to the sliding hole, and a set screw A is installed in the threaded hole.

5. A threading device for fixed-length reinforcing bars in construction according to claim 2, characterized in that: The inner end of the support rod is slidably connected to a support B, and a set screw B is provided on the support B. The upper part of the inner side of the support B is provided with a limiting auxiliary wheel corresponding to the position of the rotating chuck.

6. The threading device for fixed-length reinforcing bars in construction according to claim 1, characterized in that: A U-shaped bracket is provided on the clamping platform at the front end of the machine base, and the position of the U-shaped bracket corresponds to the saw disc of the cutting device.

7. The threading device for fixed-length reinforcing bars in construction according to claim 1, characterized in that: A photoelectric sensor is provided in the middle of the base, and a baffle corresponding to the position of the photoelectric sensor is provided on the outer slider.

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