Automatic pipe bending equipment for thin-wall steel pipe

Abstract

The utility model relates to the technical field of automatic steel pipe bending, in particular to automatic thin-wall steel pipe bending equipment which comprises a rack body, a pipe bending head installed at one end of the rack body, a pipe pushing assembly installed in the middle of the rack body in a sliding mode, a supporting assembly installed at one end of the rack body and an inner supporting assembly. The inner supporting assembly comprises a pushing hydraulic rod, a core rod and an expansion module, and the core rod penetrates through the pipe pushing assembly. According to the pipe bending device, through the arrangement of the expansion module, during bending, one end of the core rod is inserted into the position of the pipe fitting, the pushing hydraulic rod is used for moving the core rod front and back, so that the expansion module is located in the pipe fitting and located at the bent position of the pipe fitting, then the expansion module expands to support the inner wall of the pipe fitting, and when the pipe fitting is bent, the pipe pushing assembly drives the pipe fitting to move forwards; and the hydraulic rod is pushed to drive the expansion module to synchronously move forwards along with the pipe fitting, so that the thin-wall pipe fitting is supported during bending, and collapse of the pipe fitting during bending is limited.

Description

Technical Field

[0001] This utility model relates to the field of automatic steel pipe bending technology, specifically an automatic steel pipe bending device for thin-walled steel pipes. Background Technology

[0002] Steel pipes are not directly manufactured into angled pipes during production. However, in subsequent processing, the smooth pipes are bent as needed. Most existing bending equipment is used to bend the steel pipes. Most existing bending equipment relies directly on the toughness of the steel pipe for bending. During processing, excessive bending speed, large angles, thin pipe walls, and poor material toughness can all lead to wrinkles in the steel pipe. To reduce or avoid wrinkles during bending, existing automatic pipe bending machines generally use external support to restrict the outer wall of the pipe, thereby limiting wrinkles. However, the effect of limiting the inward indentation of the outer part of the pipe during bending is generally limited. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic pipe bending device for thin-walled steel pipes to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An automatic pipe bending device for thin-walled steel pipes includes a frame body, a pipe bending head installed at one end of the frame body, a pipe pushing assembly slidably installed at the middle position of the frame body, a support assembly installed at one end of the frame body, and an internal support assembly, the internal support assembly comprising:

[0006] The core rod passes through the push tube assembly. One end of the core rod is used to insert into the tube, and the other end of the core rod has an air inlet on its outer wall. The core rod is hollow.

[0007] A push hydraulic rod is installed at the other end of the main body of the platform. The output end of the push hydraulic rod is fixedly connected to the other end of the core rod. The push hydraulic rod can drive the core rod to move back and forth.

[0008] An expansion module is fixedly installed at one end of a core rod, which can expand to support the inner wall of the bent section of the pipe.

[0009] Furthermore, the core rod includes a T-shaped component one and a T-shaped component two. The T-shaped component one includes a pressure plate at one end. Both the rod-shaped outer sidewalls of the T-shaped component one and the T-shaped component two are threaded at one end. The other end of the T-shaped component one is fixedly inserted into one end of the core rod. The T-shaped component one is connected to the air inlet. A bladder is provided between the T-shaped component one and the T-shaped component two. A pressure ring one is movably sleeved on the T-shaped component one, and a pressure ring two is movably sleeved on the T-shaped component two. One end of the bladder is squeezed and clamped between the pressure plate and the pressure ring one, and the other end of the bladder is squeezed and clamped between the T-shaped component two and the pressure ring two. Nuts are screwed onto both the T-shaped component one and the T-shaped component two.

[0010] Furthermore, a support spring is fixedly connected between the pressure plate and the second T-shaped component.

[0011] Furthermore, a bridge rod is fixedly connected to one side wall of the pressure plate, and a limiting rope is fixedly connected between the middle position of the bridge rod and one end of the T-shaped part two, with the limiting rope located inside the support spring.

[0012] Furthermore, the main body of the platform is equipped with two vertically movable lower support rods, and the top of the lower support rods is rotatably mounted with guide wheels.

[0013] Furthermore, a transverse guide rail is fixedly connected to one side of one end of the main body of the platform, a support component is slidably connected to the transverse guide rail, and a transverse push motor is fixedly connected to one end of the transverse guide rail. The transverse push motor is used to drive the support component to move laterally.

[0014] Furthermore, the support assembly includes a fixed base, which is slidably connected to a transverse guide rail. A linear drive rod is fixedly installed on one side of the fixed base, and a slide is slidably installed on the other side of the fixed base. A docking seat is fixedly connected to one side of the slide, and a semi-encasing rod is detachably fixedly connected to one side of the docking seat. The semi-encasing rod is used to support one side of the pipe fitting. The output end of the transverse push motor is fixedly connected to the fixed base.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] By setting up an expansion module, the bend head bends one end of the pipe fitting, and the pusher assembly clamps and pushes the other end of the pipe fitting forward. During bending, one end of the mandrel is inserted into the pipe fitting position, and the pusher hydraulic rod is used to move the mandrel back and forth, so that the expansion module is inside the pipe fitting and located at the bending position of the pipe fitting. Then the expansion module expands to support the inner wall of the pipe fitting. When the pipe fitting bends, the pusher assembly moves the pipe fitting forward, and the pusher hydraulic rod moves the expansion module forward synchronously with the pipe fitting. When one bend of the pipe fitting is completed, the expansion module contracts, and the pusher hydraulic rod moves the expansion module back to the next bend, thereby supporting the thin-walled pipe fitting during bending and limiting the collapse of the pipe fitting during bending.

[0017] With the support spring and the limiting rope, the air source enters the expansion module from the air inlet. The setting of pressure ring one and pressure ring two facilitates the installation of the bladder and prevents the distal end of the bladder from becoming hemispherical when it expands. The setting of the limiting rope directly limits the length of the bladder, which facilitates the lateral expansion of the bladder when it expands, making it easier to support the inner wall of the pipe and improving the support of the bladder to the inner wall of the pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a top view schematic diagram of the overall structure of this utility model;

[0020] Figure 3 yes Figure 2 Enlarged view of a portion at point A;

[0021] Figure 4 This is a schematic diagram of the expansion module in use in this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the expansion module in this utility model;

[0023] Figure 6 This is a schematic diagram of the T-shaped component in this utility model.

[0024] In the diagram: 100, main frame; 110, bend head; 120, lower support rod; 130, transverse guide rail; 131, transverse push motor; 200, push tube assembly; 300, internal support assembly; 310, push hydraulic rod; 320, core rod; 321, air inlet; 330, expansion module; 331, T-shaped part one; 3311, pressure plate; 332, pressure ring one; 333, bridge rod; 334, limiting rope; 335, support spring; 336, T-shaped part two; 337, pressure ring two; 338, nut; 339, bladder body; 400, support assembly; 410, fixed seat; 420, linear drive rod; 430, slide; 440, docking seat; 450, semi-enclosed rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5In this embodiment of the present invention, an automatic thin-walled steel pipe bending device includes a frame body 100, a bending head 110 installed at one end of the frame body 100, a pipe pushing assembly 200 slidably installed at the middle position of the frame body 100, a support assembly 400 installed at one end of the frame body 100, and an inner support assembly 300. The inner support assembly 300 includes a pushing hydraulic rod 310, a core rod 320, and an expansion module 330. The core rod 320 passes through the pipe pushing assembly 200. One end of the core rod 320 is used to insert into the pipe fitting. The outer wall of the other end of the core rod 320 is provided with an air inlet 321. The core rod 320 is hollow. The push hydraulic rod 310 is installed at the other end of the main body 100 of the platform. The output end of the push hydraulic rod 310 is fixedly connected to the other end of the core rod 320. The push hydraulic rod 310 can drive the core rod 320 to move back and forth. The expansion module 330 is fixedly installed at one end of the core rod 320. The core rod 320 can expand to support the inner wall of the bent part of the pipe fitting.

[0027] Specifically, one end of the pipe is bent by the bend head 110, and the other end of the pipe is clamped and pushed forward by the pusher assembly 200. During bending, one end of the core rod 320 is inserted into the pipe position, and the pusher hydraulic rod 310 is used to move the core rod 320 back and forth, so that the expansion module 330 is inside the pipe and located at the bent position of the pipe. Then the expansion module 330 expands to support the inner wall of the pipe. When the pipe bends, the pusher assembly 200 drives the pipe to move forward, and the pusher hydraulic rod 310 drives the expansion module 330 to move forward synchronously with the pipe. When one bend of the pipe is completed, the expansion module 330 contracts, and the pusher hydraulic rod 310 drives the expansion module 330 back to the next bend, thereby supporting the thin-walled pipe during bending and limiting the collapse of the pipe during bending. Example 1

[0028] like Figures 4-6As shown, in this embodiment, the core rod 320 includes a first T-shaped component 331 and a second T-shaped component 336. The first T-shaped component 331 includes a pressure plate 3311 at one end. Both the first T-shaped component 331 and the second T-shaped component 336 have threads on one end of their rod-shaped outer sidewalls. The other end of the first T-shaped component 331 is fixedly inserted into one end of the core rod 320. The first T-shaped component 331 communicates with the air inlet 321. A bladder 339 is provided between the first T-shaped component 331 and the second T-shaped component 336. A pressure ring 332 is movably sleeved on the first T-shaped component 331, and a pressure ring 336 is movably sleeved on the second T-shaped component 336. 37. One end of the bladder 339 is squeezed and clamped between the pressure plate 3311 and the pressure ring 332. The other end of the bladder 339 is squeezed and clamped between the T-shaped part 336 and the pressure ring 337. Nuts 338 are screwed onto both the T-shaped part 331 and the T-shaped part 336. A support spring 335 is fixed between the pressure plate 3311 and the T-shaped part 336. A bridge rod 333 is fixed to one side wall of the pressure plate 3311. A limiting rope 334 is fixed between the middle position of the bridge rod 333 and one end of the T-shaped part 336. The limiting rope 334 is located inside the support spring 335.

[0029] In this embodiment, the air source enters the expansion module 330 through the air inlet 321. The setting of pressure ring 332 and pressure ring 337 facilitates the installation of the bladder 339 while preventing the distal end of the bladder 339 from becoming hemispherical when it expands. The setting of the limiting rope 334 directly limits the length of the bladder 339, thereby facilitating the lateral expansion of the bladder 339 when it expands, which is convenient for supporting the inner wall of the tube. The setting of the support spring 335 facilitates the support of the soft bladder 339 when it deflates, which is convenient for the expansion module 330 to move inside the tube. Example 2

[0030] like Figures 2-3 As shown, in this embodiment, two vertically lifting lower support rods 120 are installed on the main body 100 of the platform. Guide wheels are rotatably installed on the top of the lower support rods 120. A transverse guide rail 130 is fixedly connected to one side of one end of the main body 100 of the platform. A support component 400 is slidably connected to the transverse guide rail 130. A horizontal push motor 131 is fixedly connected to one end of the transverse guide rail 130. The horizontal push motor 131 is used to drive the support component 400 to move laterally. The support component 400 includes a fixed seat 410. The fixed seat 410 is slidably connected to the transverse guide rail 130. A linear drive rod 420 is fixedly installed on one side of the fixed seat 410. A slide block 430 is slidably installed on the other side of the fixed seat 410. A docking seat 440 is fixedly connected to one side of the slide block 430. A semi-encasing rod 450 is detachably fixedly connected to one side of the docking seat 440. The semi-encasing rod 450 is used to support one side of the pipe. The output end of the horizontal push motor 131 is fixedly connected to the fixed seat 410.

[0031] In practice, the support assembly 400 is moved laterally by the horizontal push motor 131, thereby causing the semi-encasing rod 450 to move laterally closer to or further away from the pipe fitting. With the setting of the linear drive rod 420, when the pipe fitting is bent, the linear drive rod 420 drives the semi-encasing rod 450 to move forward, so that the semi-encasing rod 450 moves forward synchronously with the pipe fitting when the pipe fitting is bent, thus avoiding friction between the semi-encasing rod 450 and the pipe fitting when supporting the pipe fitting.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A thin-walled steel pipe automatic pipe bending equipment, comprising a rack main body (100), a pipe bending head (110) is installed at one end of the rack main body (100), a pipe pushing assembly (200) is slidingly installed at a middle position of the rack main body (100), and a supporting assembly (400) is installed at one end of the rack main body (100), characterized in that, It also includes an inner support assembly (300), the inner support assembly (300) comprising: A core rod (320) passes through the push tube assembly (200). One end of the core rod (320) is used to insert into the tube. An air inlet (321) is provided on the outer wall of the other end of the core rod (320). The core rod (320) is hollow. A push hydraulic rod (310) is installed at the other end of the main body of the platform (100). The output end of the push hydraulic rod (310) is fixedly connected to the other end of the core rod (320). The push hydraulic rod (310) can drive the core rod (320) to move back and forth. An expansion module (330) is fixedly installed at one end of a core rod (320), which can expand to support the inner wall of the bent part of the pipe fitting.

2. The apparatus according to claim 1, wherein The core rod (320) includes a first T-shaped component (331) and a second T-shaped component (336). The first T-shaped component (331) includes a pressure plate (3311) at one end. Both the first T-shaped component (331) and the second T-shaped component (336) have threads on one end of their rod-shaped outer sidewalls. The other end of the first T-shaped component (331) is fixedly inserted into one end of the core rod (320). The first T-shaped component (331) is connected to the air inlet (321). A connection is provided between the first T-shaped component (331) and the second T-shaped component (336). A bladder (339) is provided. A pressure ring (332) is movably sleeved on the first T-shaped part (331), and a pressure ring (337) is movably sleeved on the second T-shaped part (336). One end of the bladder (339) is squeezed and clamped between the pressure plate (3311) and the first pressure ring (332), and the other end of the bladder (339) is squeezed and clamped between the second T-shaped part (336) and the second pressure ring (337). Nuts (338) are screwed onto both the first T-shaped part (331) and the second T-shaped part (336).

3. The automatic pipe bending equipment for thin-walled steel pipes according to claim 2, characterized in that, A support spring (335) is fixedly connected between the pressure plate (3311) and the T-shaped part (336).

4. The automatic pipe bending equipment for thin-walled steel pipes according to claim 2, characterized in that, A bridge rod (333) is fixedly connected to one side wall of the pressure plate (3311). A limiting rope (334) is fixedly connected between the middle position of the bridge rod (333) and one end of the T-shaped part (336). The limiting rope (334) is located inside the support spring (335).

5. The automatic pipe bending equipment for thin-walled steel pipes according to claim 1, characterized in that, The main body (100) of the platform is equipped with two vertically lifting lower support rods (120), and the top of the lower support rods (120) is rotatably mounted with guide wheels.

6. The automatic pipe bending equipment for thin-walled steel pipes according to claim 1, characterized in that, A transverse guide rail (130) is fixedly connected to one side of one end of the main body (100). A support component (400) is slidably connected to the transverse guide rail (130). A transverse push motor (131) is fixedly connected to one end of the transverse guide rail (130). The transverse push motor (131) is used to drive the support component (400) to move laterally.

7. The automatic pipe bending equipment for thin-walled steel pipes according to claim 6, characterized in that, The support assembly (400) includes a fixed seat (410), which is slidably connected to a transverse guide rail (130). A linear drive rod (420) is fixedly installed on one side of the fixed seat (410), and a slide (430) is slidably installed on the other side of the fixed seat (410). A docking seat (440) is fixedly connected to one side of the slide (430), and a semi-encasing rod (450) is detachably fixedly connected to one side of the docking seat (440). The semi-encasing rod (450) is used to support one side of the pipe fitting. The output end of the transverse push motor (131) is fixedly connected to the fixed seat (410).

Images