Steel pipe bending die

Abstract

The utility model relates to the technical field of steel pipe bending, and discloses a steel pipe bending die which comprises a bottom plate and a segmented adjusting mechanism, the segmented adjusting mechanism comprises two sets of second guide rails and second fastening bolts, and through the arranged segmented adjusting mechanism, a plurality of slidable hydraulic cylinders can be arranged through first guide rails and first dovetail grooves; the hydraulic cylinder can be fixed to the needed position by tightening a first limiting piece, different first top dies can be installed by tightening a second fastening bolt on a first fixing plate, a plurality of slidable fixing pieces can be arranged through a second guide rail and a second dovetail groove, different bottom dies can be fixed by tightening the first fastening bolt, and then the second limiting piece is tightened. The bottom die can be fixed to the position under the first top die, a steel pipe needing to be bent is fixed through the fixing groove, finally, the hydraulic cylinder is started in sequence, the first top die and the bottom die are made to be pressed through the pressing rod, and therefore the bending requirements of multiple positions with different distances and different bending radiuses are met.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe bending, and particularly relates to a steel pipe bending die. Background Technique

[0002] A steel pipe bending die is a tool used to bend steel pipes into specific shapes. It usually consists of a pressure applying component, a die, a support and fixing structure, and a control system. Steel pipe bending dies are widely used in fields such as mechanical manufacturing, automobile manufacturing, and construction. They are an important processing tool. Different bending requirements require different types of dies. Therefore, when selecting and using a steel pipe bending die, reasonable selection and design need to be carried out according to specific processing requirements.

[0003] After retrieval, the applicant found that the Chinese patent disclosed an "automatic pipe bending die for the front and rear axles of an automobile", and its publication (announcement) number is "CN219233609U". This patent mainly simplifies the bending process of steel pipes by setting bending parts and limiting mechanisms, and at the same time reduces the production cost of the die. However, it cannot conveniently process steel pipes with bending requirements of multiple different distances and different bending radii. For this reason, we propose a steel pipe bending die. Content of the Utility Model

[0004] The purpose of the utility model is to provide a steel pipe bending die to solve the problem that steel pipes with bending requirements of multiple different distances and different bending radii cannot be conveniently processed as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A steel pipe bending die includes a bottom plate and a segmented adjustment mechanism. The segmented adjustment mechanism includes two groups of second guide rails and second fastening bolts. A first guide rail is fixedly connected to the upper surface of the bottom plate near the front side position. A first dovetail groove is sleeved on the outer wall of the first guide rail. A first limiting member is threadedly connected to the opening on the upper surface of the first dovetail groove, and a first bracket is fixedly connected to its upper surface. A second dovetail groove is sleeved on the outer walls of the two groups of second guide rails. A second limiting member is threadedly connected to the opening position on the upper surface of the second dovetail groove, and a fixing member is fixedly connected to its upper surface.

[0006] As a preferred solution, a sliding plate is slidably connected to the upper surface of the bottom plate close to the side wall of the first dovetail groove.

[0007] As a preferred solution, the upper surface of the sliding plate is fixedly connected to the two groups of the second guide rails. The tops of the two groups of fixing members are inserted with first fastening bolts. The outer walls of the two groups of first fastening bolts are sleeved with a bottom mold at the position between the two groups of fixing members. A fixing groove is opened at the axial position of the upper surface of the bottom mold. A hydraulic cylinder is fixedly installed on the upper surface of the first bracket. A pressure rod is fixedly connected to the output shaft of the hydraulic cylinder. A first fixing plate is fixedly connected to the lower surface of the pressure rod. A first top mold is movably arranged on the lower surface of the first fixing plate. The second fastening bolt is threadedly connected to the first fixing plate and the first top mold.

[0008] As a preferred solution, first limiting plates are fixedly connected to both ends of the bottom plate in close contact with the outer walls of the first guide rails, and second limiting plates are fixedly connected to both ends of the bottom plate in close contact with the outer walls of the second guide rails.

[0009] As a preferred solution, a shift fine-tuning mechanism is arranged above the bottom plate. The shift fine-tuning mechanism includes a fourth guide rail, a third limiting member, a fourth limiting member, and a third fastening bolt. The fourth guide rail is fixedly connected to the upper surface of the bottom plate. A third guide rail is fixedly connected to the upper surface of the bottom plate near the rear side position. A third dovetail groove is sleeved on the outer wall of the third guide rail. The third limiting member is threadedly connected to the third dovetail groove. A second bracket is fixedly connected to the upper surface of the third dovetail groove. The second bracket is fixedly connected to the first bracket.

[0010] As a preferred solution, a fourth dovetail groove is opened at the same position on the side wall of the sliding plate as the fourth guide rail. The fourth dovetail groove is sleeved on the outer wall of the fourth guide rail. A motor is fixedly installed on the upper surface of the second bracket. A stud is fixedly connected to the output shaft of the motor. A second fixing plate is threadedly connected to the outer wall of the stud, and its lower surface is movably connected to the second bracket. A second top mold is movably arranged on the lower surface of the second fixing plate. The third fastening bolt is threadedly connected to the second fixing plate and the second top mold. Third limiting plates are fixedly connected to both ends of the bottom plate in close contact with the outer wall of the third guide rail.

[0011] The technical effects and advantages of the present utility model:

[0012] 1. Through the provided segmented adjustment mechanism, multiple slidable hydraulic cylinders can be set via the first guide rail and the first dovetail groove. Tightening the first limit piece can fix the hydraulic cylinder at the desired position. By tightening the second fastening bolt on the first fixing plate, different first top dies can be installed. Through the second guide rail and the second dovetail groove, multiple slidable fixing pieces can be set. Tightening the first fastening bolt can fix different bottom dies. Then, by tightening the second limit piece, the bottom die can be fixed at the position directly below the first top die. The steel pipe to be bent is fixed by means of the fixing groove. Finally, the hydraulic cylinders are started in sequence, and the first top die and the bottom die are pressed together by using the pressure rod, so as to meet the requirements of multiple bends with different distances and different bending radii;

[0013] 2. Through the provided shifting fine-tuning mechanism, a slidable motor can be set at a position symmetrical to the hydraulic cylinder by means of the third guide rail, the third dovetail groove, the first bracket and the second bracket. Starting the motor drives the stud to rotate clockwise or counterclockwise, and then the second fixing plate threadedly connected thereto rises or falls slowly. By tightening the third fastening bolt, different second top dies can be installed. By using the fourth guide rail and the fourth dovetail groove, the sliding plate drives the bottom die to slide to the side of the bottom plate close to the motor. Tightening the fourth limit piece can fix the sliding plate and the bottom die thereon directly below the second top die. Through the slow descent of the second fixing plate and the second top die, they are slowly pressed together with the bottom die, thus realizing the fine adjustment of the steel pipe bending operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a front view of a partial structure of the segmented adjustment mechanism of the present utility model;

[0016] Figure 3 is a rear view of a partial structure of the segmented adjustment mechanism of the present utility model;

[0017] Figure 4 is an exploded view of a partial structure of the segmented adjustment mechanism of the present utility model;

[0018] Figure 5 is a schematic diagram of a partial structure of the segmented adjustment mechanism of the present utility model;

[0019] Figure 6 is a schematic diagram of a partial structure of the shifting fine-tuning mechanism of the present utility model (one);

[0020] Figure 7 is a schematic diagram of a partial structure of the shifting fine-tuning mechanism of the present utility model (two);

[0021] Figure 8 is a schematic diagram of a partial structure of the shifting fine-tuning mechanism of the present utility model (three).

[0022] In the figure: 1, bottom plate; 2, sliding plate; 3, segmented adjustment mechanism; 301, first guide rail; 302, first dovetail groove; 303, first limiting member; 304, first bracket; 305, second guide rail; 306, second dovetail groove; 307, second limiting member; 308, fixing member; 309, first fastening bolt; 310, bottom die; 311, hydraulic cylinder; 312, pressure bar; 313, first fixing plate; 314, first top die; 315, second fastening bolt; 316, first limiting plate; 317, second limiting plate; 318, fixing groove; 4, shift fine adjustment mechanism; 401, third guide rail; 402, fourth guide rail; 403, third dovetail groove; 404, third limiting member; 405, second bracket; 406, fourth limiting member; 407, fourth dovetail groove; 408, motor; 409, stud; 410, second fixing plate; 411, second top die; 412, third fastening bolt; 413, third limiting plate. Specific embodiments

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1:

[0025] Please refer to the attached Figure 1 - attached Figure 5, A steel pipe bending die, comprising a bottom plate 1 and a segmented adjustment mechanism 3. The segmented adjustment mechanism 3 includes two groups of second guide rails 305 and second fastening bolts 315. At a position near the front side of the upper surface of the bottom plate 1, a first guide rail 301 is fixedly connected. A first dovetail groove 302 is sleeved on the outer wall of the first guide rail 301. A first limiting member 303 is threadedly connected to the opening on the upper surface of the first dovetail groove 302, and a first bracket 304 is fixedly connected to its upper surface. A second dovetail groove 306 is sleeved on the outer walls of the two groups of second guide rails 305. A second limiting member 307 is threadedly connected to the opening position on the upper surface of the second dovetail groove 306, and a fixing member 308 is fixedly connected to its upper surface. A sliding plate 2 is slidably connected to the position of the side wall of the bottom plate 1 close to the first dovetail groove 302 on the upper surface of the bottom plate 1. The upper surface of the sliding plate 2 is fixedly connected to the two groups of second guide rails 305. A first fastening bolt 309 is inserted into the tops of the two groups of fixing members 308. A bottom die 310 is sleeved on the outer walls of the two groups of first fastening bolts 309 at a position between the two groups of fixing members 308. A fixing groove 318 is provided at the axis position of the upper surface of the bottom die 310. A hydraulic cylinder 311 is fixedly installed on the upper surface of the first bracket 304. A pressure rod 312 is fixedly connected to the output shaft of the hydraulic cylinder 311. A first fixing plate 313 is fixedly connected to the lower surface of the pressure rod 312. A first top die 314 is movably arranged on the lower surface of the first fixing plate 313. The second fastening bolt 315 is threadedly connected to the first fixing plate 313 and the first top die 314. First limiting plates 316 are fixedly connected to both ends of the outer wall of the first guide rail 301 close to the bottom plate 1. Second limiting plates 317 are fixedly connected to both ends of the outer wall of the second guide rail 305 close to the bottom plate 1.

[0026] The first limiting plate 316, the second limiting plate 317 and the third limiting plate 413 all play a limiting role to prevent the first dovetail groove 302, the second dovetail groove 306 and the third dovetail groove 403 from falling off the first guide rail 301, the second guide rail 305 and the third guide rail 401 when adjusting the position. When bending, the hydraulic cylinder 311 is started sequentially to give a buffer to the raw material to be bent, so as to avoid being crushed by simultaneous force.

[0027] Specifically, multiple slidable hydraulic cylinders 311 can be arranged through the first guide rail 301 and the first dovetail groove 302. By tightening the first limiting member 303, the hydraulic cylinder 311 can be fixed at the required position. Different first top dies 314 can be installed by tightening the second fastening bolts 315 on the first fixing plate 313. Multiple slidable fixing members 308 are arranged through the second guide rail 305 and the second dovetail groove 306. By tightening the first fastening bolt 309, different bottom dies 310 can be fixed. By tightening the second limiting member 307, the bottom die 310 can be fixed at a position directly below the first top die 314. The steel pipe material to be bent can be fixed through the fixing groove 318. Finally, the hydraulic cylinder 311 is started in sequence, and the first top die 314 and the bottom die 310 are pressed together through the pressure rod 312 to meet the bending requirements with multiple different distances and different bending radii.

[0028] Embodiment 2:

[0029] Please refer to Appendix Figure 1 , Appendix Figure 6 , Appendix Figure 7 and Appendix Figure 8 , and on the basis of Embodiment 1, it is further obtained that a shift fine-tuning mechanism 4 is arranged above the bottom plate 1. The shift fine-tuning mechanism 4 includes a fourth guide rail 402, a third limiting member 404, a fourth limiting member 406, and a third fastening bolt 412. The fourth guide rail 402 is fixedly connected to the upper surface of the bottom plate 1. A third guide rail 401 is fixedly connected to the upper surface of the bottom plate 1 near the rear side position. A third dovetail groove 403 is sleeved on the outer wall of the third guide rail 401. The third limiting member 404 is threadedly connected to the third dovetail groove 403. A second bracket 405 is fixedly connected to the upper surface of the third dovetail groove 403. The second bracket 405 is fixedly connected to the first bracket 304. A fourth dovetail groove 407 is formed at the same position on the side wall of the sliding plate 2 as the fourth guide rail 402. The fourth dovetail groove 407 is sleeved on the outer wall of the fourth guide rail 402. A motor 408 is fixedly installed on the upper surface of the second bracket 405. A stud 409 is fixedly connected to the output shaft of the motor 408. A second fixing plate 410 is threadedly connected to the outer wall of the stud 409, and its lower surface is movably connected to the second bracket 405. A second top die 411 is movably arranged on the lower surface of the second fixing plate 410. The third fastening bolt 412 is threadedly connected to the second fixing plate 410 and the second top die 411. Third limiting plates 413 are fixedly connected to both ends of the outer wall of the third guide rail 401 closely against the bottom plate 1.

[0030] Design a sliding plate 2 with an appropriate width. The bottom die 310 and the sliding plate 2 share the same axis. When the sliding plate 2 is close to the side wall of the first dovetail groove 302, the first top die 314 and the bottom die 310 share the same axis. When the sliding plate 2 is close to the side wall of the third dovetail groove 403, the second top die 411 and the bottom die 310 share the same axis to ensure the accuracy of the bending position.

[0031] Specifically, a slidable motor 408 can be arranged at a position symmetrical to the hydraulic cylinder 311 through the third guide rail 401, the third dovetail groove 403, the first bracket 304 and the second bracket 405. Start the motor 408 to drive the stud 409 to rotate clockwise or counterclockwise, so that the second fixed plate 410 threadedly connected thereto slowly rises or falls. Different second top dies 411 can be installed by tightening the third fastening bolt 412. With the help of the fourth guide rail 402 and the fourth dovetail groove 407, the sliding plate 2 drives the bottom die 310 to slide to the side close to the motor 408. The sliding plate 2 and the bottom die 310 thereon can be fixed directly below the second top die 411 by tightening the fourth limiting member 406. The fine adjustment of the bending operation of the steel pipe is realized by the slow descent of the second fixed plate 410 and the second top die 411 and the slow pressing together with the bottom die 310.

[0032] Working principle of the present utility model: The present utility model is a steel pipe bending die. When starting the bending operation of the steel pipe, first, according to the bending requirements, an appropriate number of first dovetail grooves 302, first brackets 304, hydraulic cylinders 311, pressure rods 312, etc. are arranged at appropriate positions on the first guide rail 301. Tighten the first limiting member 303 to fix the position of the hydraulic cylinder 311. At the same time, a motor 408 and a stud 409 are arranged at a position symmetrical to the hydraulic cylinder 311 through a second bracket 405 fixedly connected to the first bracket 304, a third guide rail 401, and the same number of third dovetail grooves 403. By tightening the second fastening bolt 315, a first top die 314 with different required bending shapes is installed below each first fixing plate 313 fixedly connected to the lower surface of the pressure rod 312. In the same way, by tightening the third fastening bolt 412, a second top die 411 identical to the corresponding first top die 314 is installed below each second fixing plate 410 threadedly connected to the stud 409. Then, the sliding plate 2 is adjusted to a position close to the side wall of the first dovetail groove 302 through the fourth guide rail 402 and the fourth dovetail groove 407. The required number of second dovetail grooves 306, fixing members 308, and first fastening bolts 309 are arranged on the second guide rail 305. Tighten the first fastening bolt 309 to install a bottom die 310 that matches the first top die 314. Use the second limiting member 307 to fix these fixing members 308 and the first fastening bolt 309 in their corresponding positions so that the first top die 314 is located directly above the bottom die 310. Then start the hydraulic cylinder 311, so that the pressure rod 312 quickly presses down the first top die 314 through the first fixing plate 313 and presses it against the bottom die 310, quickly processing the steel pipe to a shape close to the finished product. Turn off the hydraulic cylinder 311, raise the first top die 314, loosen the fourth limiting member 406, push the movable plate to a position close to the side wall of the third dovetail groove 403, and tighten the fourth limiting member 406. At this time, the bottom die 310 is located directly below the second top die 411. Start the motor 408 in sequence, so that the stud 409 rotates counterclockwise, and the second fixing plate 410 and the second top die 411 below it slowly descend and gradually press against the bottom die 310, slowly and precisely adjusting the bending shape of the bent steel pipe to make it more accurate. After the bending is completed, start the motor 408 to drive the stud 409 to rotate clockwise, raise the second top die 411, remove the processed steel pipe, and remove the unnecessary bottom die 310, first top die 314, and second top die 411. Bend the next steel pipe to be bent in the same way.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A steel pipe bending die, comprising a bottom plate (1) and a segmented adjustment mechanism (3), characterized in that: The segmented adjustment mechanism (3) includes two sets of second guide rails (305) and second fastening bolts (315). At a position near the front side of the upper surface of the bottom plate (1), a first guide rail (301) is fixedly connected. A first dovetail groove (302) is sleeved on the outer wall of the first guide rail (301). A first limiting member (303) is threadedly connected to the opening on the upper surface of the first dovetail groove (302), and a first bracket (304) is fixedly connected to its upper surface. Two sets of second dovetail grooves (306) are sleeved on the outer walls of the two sets of second guide rails (305). A second limiting member (307) is threadedly connected to the opening position on the upper surface of the second dovetail groove (306), and a fixing member (308) is fixedly connected to its upper surface.

2. The steel pipe bending die according to claim 1, characterized in that: A sliding plate (2) is slidably connected to the upper surface of the bottom plate (1) at a position close to the side wall of the first dovetail groove (302).

3. The steel pipe bending die according to claim 2, characterized in that: The upper surface of the sliding plate (2) is fixedly connected to the two sets of second guide rails (305). A first fastening bolt (309) is inserted into the tops of the two sets of fixing members (308). A bottom die (310) is sleeved on the outer wall of the two sets of first fastening bolts (309) at a position between the two sets of fixing members (308). A fixing groove (318) is formed at the axial position of the upper surface of the bottom die (310). A hydraulic cylinder (311) is fixedly installed on the upper surface of the first bracket (304). A pressure rod (312) is fixedly connected to the output shaft of the hydraulic cylinder (311). A first fixing plate (313) is fixedly connected to the lower surface of the pressure rod (312). A first top die (314) is movably arranged on the lower surface of the first fixing plate (313). The second fastening bolt (315) is threadedly connected to the first fixing plate (313) and the first top die (314).

4. The steel pipe bending die according to claim 3, characterized in that: First limiting plates (316) are fixedly connected to both ends of the outer wall of the first guide rail (301) close to the bottom plate (1). Second limiting plates (317) are fixedly connected to both ends of the outer wall of the second guide rail (305) close to the bottom plate (1).

5. The steel pipe bending die according to claim 4, characterized in that: A shift fine adjustment mechanism (4) is arranged above the bottom plate (1). The shift fine adjustment mechanism (4) includes a fourth guide rail (402), a third limiting member (404), a fourth limiting member (406), and a third fastening bolt (412). The fourth guide rail (402) is fixedly connected to the upper surface of the bottom plate (1). A third guide rail (401) is fixedly connected to the upper surface of the bottom plate (1) at a position near the rear side. A third dovetail groove (403) is sleeved on the outer wall of the third guide rail (401). The third limiting member (404) is threadedly connected to the third dovetail groove (403). A second bracket (405) is fixedly connected to the upper surface of the third dovetail groove (403). The second bracket (405) is fixedly connected to the first bracket (304).

6. The steel pipe bending die according to claim 5, characterized in that: A fourth dovetail groove (407) is formed at the same position on the side wall of the sliding plate (2) as that of the fourth guide rail (402). The fourth dovetail groove (407) is sleeved on the outer wall of the fourth guide rail (402). A motor (408) is fixedly installed on the upper surface of the second bracket (405). A stud (409) is fixedly connected to the output shaft of the motor (408). A second fixing plate (410) is threadedly connected to the outer wall of the stud (409), and its lower surface is movably connected to the second bracket (405). A second top mold (411) is movably arranged on the lower surface of the second fixing plate (410). A third fastening bolt (412) is threadedly connected to the second fixing plate (410) and the second top mold (411). Third limiting plates (413) are fixedly connected to both ends of the bottom plate (1) where the outer wall of the third guide rail (401) is in close contact with the bottom plate (1).

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