Cold roll forming die for large-diameter pipeline

Abstract

The utility model provides a large-diameter pipeline cold roll forming die, and belongs to the technical field of pipeline machining. The large-diameter pipeline cold roll forming die comprises a cold pressing assembly and an adjusting assembly, the cold pressing assembly comprises a workbench, a hydraulic cylinder and an arc-shaped male die, the hydraulic cylinder is arranged on the top of the workbench, the adjusting assembly comprises a fixed female die, a supplementing module and an adjusting positioning piece, the fixed female die is fixedly connected to the top of the workbench, and the supplementing module is arranged on the top of the workbench. By arranging the workbench, the hydraulic cylinder, the arc-shaped male die, the fixed female die, the supplementing module and the adjusting positioning piece, the hydraulic cylinder is used for pushing the arc-shaped male die to move towards the fixed female die to achieve cold roll forming, the supplementing module can be used for supplementing the contact area of the fixed female die when a pipeline is bent, and therefore the requirements for different bending degrees can be met; the requirement for different orientations of the bent port is met, the die does not need to be replaced, and practicability is greatly improved.

Description

Technical Field

[0001] The present application relates to the field of pipeline processing, and in particular to a large-diameter pipeline cold bending forming die. Background Art

[0002] Parts bending technology has been widely used in various production industries, especially in boilers, pressure vessels, petroleum and petrochemical engineering, etc. With the widespread use of various bent pipes in industry, agriculture, etc., the development of the pipe bending machine industry has been continuously promoted. The emergence of various bending technologies has made it possible to meet today's multi-demand, high-precision pipe products.

[0003] The pipe bending machine mold type with announcement number CN213701316U shapes and bends the material by setting a punch and a die. The placement of the material can be accurately located by setting a limit block. The punch and the die are respectively provided with a No. 1 bending groove and a No. 2 bending groove. When in contact with the material, the No. 1 bending groove and the No. 2 bending groove will fix the material in the middle. As the punch and the die approach each other, the material will bend along the inner walls of the No. 1 bending groove and the No. 2 bending groove. In this process, the bending part of the material is subject to the interaction force of the inner walls of the No. 1 bending groove and the No. 2 bending groove. The material is not easy to variability and the bending part will not wrinkle, which effectively improves the yield and quality of the bent pipe.

[0004] However, there are some defects in the above scheme: the above scheme adopts cold pressing to extrude the pipe, but the fixed size mold has limitations, the bending degree of the pipe is fixed, and the different orientation requirements of the port after bending require a new mold, which has low practicality. Utility Model Content

[0005] In order to make up for the above shortcomings, the present application provides a large-diameter pipe cold bending forming die, which aims to improve the problems raised in the above background technology.

[0006] An embodiment of the present application provides a large-diameter pipe cold-bending forming die including a cold pressing component and an adjusting component.

[0007] The cold pressing assembly comprises a workbench, a hydraulic cylinder and an arc-shaped punch. The hydraulic cylinder is arranged on the top of the workbench, and the arc-shaped punch is slidably arranged on the top of the workbench and connected to the hydraulic cylinder.

[0008] The adjustment assembly includes a fixed die, a supplementary module and an adjustment positioning piece. The fixed die is fixedly connected to the top of the workbench, the supplementary module is slidably arranged on the side of the fixed die, the adjustment positioning piece is arranged at one end of the fixed die, and the supplementary module is connected to the adjustment positioning piece.

[0009] In a specific embodiment, a through hole is opened on the top of the workbench and is fixedly connected to a guide rod, a sliding block is arranged at the bottom of the arc-shaped punch, and the sliding block is slidably sleeved on the surface of the guide rod, and a guide block is arranged at the bottom of the fixed die, and the guide block is sleeved on the surface of the guide rod.

[0010] In the above implementation process, the sliding block and the guide block are both sleeved on the guide rod to guide the arc-shaped punch to move stably toward the fixed die, thereby ensuring that the arc-shaped punch is aligned and enters the fixed die.

[0011] In a specific embodiment, a slide groove is provided on a side of the fixed die, and a slider is provided on one side of the supplementary module, and the slider and the inner wall of the slide groove are clearance-matched.

[0012] In the above implementation process, the clearance between the slider and the inner wall of the slide groove is set to guide the supplementary module to slide stably and linearly along the slide groove.

[0013] In a specific embodiment, the slide groove and the slide block are both T-shaped.

[0014] In the above implementation process, a T-shaped slider is provided to guide the supplementary module to slide while keeping it connected and fixed to the side of the fixed die.

[0015] In a specific embodiment, the adjustment positioning member includes an extension plate and a threaded rod, the extension plate is arranged on the side of the fixed die, the threaded rod threads penetrate the extension plate, and the end of the threaded rod is movably connected to the supplementary module.

[0016] In the above implementation process, by providing an extension plate and a threaded rod, the threaded rod is rotated, and the threaded rod rotates and can move axially, thereby driving the supplementary module to move.

[0017] In a specific embodiment, a knob is fixedly connected to one end of the threaded rod away from the supplementary module.

[0018] In the above implementation process, by providing a knob, it is convenient to drive the threaded rod to rotate by turning the knob, which facilitates operation.

[0019] In a specific embodiment, the arc-shaped punch, the fixed die and the supplementary module are all provided with forming grooves.

[0020] In a specific embodiment, support legs are provided at the bottom of the workbench, and anti-slip pads are provided at the bottom of the support legs.

[0021] In the above implementation process, support legs and anti-skid pads are provided to stably support the workbench.

[0022] Beneficial effects: The present application provides a large-diameter pipe cold-bending forming mold, which realizes cold-bending forming by setting a workbench, a hydraulic cylinder, an arc-shaped punch, a fixed die, a supplementary module and an adjustment positioning piece. The hydraulic cylinder is used to push the arc-shaped punch toward the fixed die to achieve cold-bending forming. The supplementary module can be used to supplement the contact area of ​​the fixed die when bending the pipe, thereby meeting the requirements of different bending degrees and realizing the requirements of different orientations of the port after bending. There is no need to replace the mold, which greatly improves the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of a large-diameter pipe cold-bending forming die provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the cold pressing assembly structure provided for an embodiment of the present application;

[0026] Figure 3 A schematic diagram of a fixed die structure provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of the structure of the adjustment positioning member provided in an embodiment of the present application.

[0028] In the figure: 100-cold pressing assembly; 110-workbench; 120-hydraulic cylinder; 130-arc punch; 131-sliding block; 140-guide rod; 160-support leg; 200-adjusting assembly; 210-fixed die; 212-guide block; 213-slide; 220-supplementary module; 222-slider; 250-adjusting positioning piece; 251-extension plate; 252-threaded rod; 2521-knob; 260-molding groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0030] See also Figure 1-Figure 4 The present application provides a large-diameter pipe cold-bending forming die including a cold pressing component 100 and an adjusting component 200.

[0031] See also Figure 1 and2 The cold pressing assembly 100 includes a workbench 110 , a hydraulic cylinder 120 and an arc-shaped punch 130 . The hydraulic cylinder 120 is disposed on the top of the workbench 110 . The arc-shaped punch 130 is slidably disposed on the top of the workbench 110 and is connected to the hydraulic cylinder 120 .

[0032] In a specific embodiment, support legs 160 are provided at the bottom of the workbench 110 , and anti-skid pads are provided at the bottom of the support legs 160 . The support legs 160 and the anti-skid pads are provided to stably support the workbench 110 .

[0033] See also Figure 1 , 2 , 3 and 4, the adjustment component 200 includes a fixed die 210, a supplementary module 220 and an adjustment positioning member 250, the fixed die 210 is fixedly connected to the top of the workbench 110, the supplementary module 220 is slidably arranged on the side of the fixed die 210, the adjustment positioning member 250 is arranged at one end of the fixed die 210, and the supplementary module 220 is connected to the adjustment positioning member 250.

[0034] Among them, a through hole is opened on the top of the workbench 110 and is fixedly connected to a guide rod 140, a sliding block 131 is arranged at the bottom of the arc-shaped punch 130, and the sliding block 131 is slidably sleeved on the surface of the guide rod 140, and a guide block 212 is arranged at the bottom of the fixed die 210, and the guide block 212 is sleeved on the surface of the guide rod 140. By setting the sliding block 131 and the guide block 212 to be sleeved on the guide rod 140, it is used to guide the arc-shaped punch 130 to be stable when moving toward the fixed die 210, thereby ensuring that the arc-shaped punch 130 is aligned and enters the fixed die 210.

[0035] In a specific implementation scheme, a slide groove 213 is opened on the side of the fixed die 210, and a slider 222 is set on one side of the supplementary module 220. The slider 222 and the inner wall of the slide groove 213 are clearance matched. By setting the clearance match between the slider 222 and the inner wall of the slide groove 213, it is used to guide the supplementary module 220 to slide stably and linearly along the slide groove 213.

[0036] Specifically, the slide groove 213 and the slider 222 are both T-shaped. By providing the T-shaped slider 222, the supplementary module 220 can be guided to slide while being connected and fixed to the side of the fixed die 210.

[0037] In this embodiment, the adjustment positioning member 250 includes an extension plate 251 and a threaded rod 252. The extension plate 251 is arranged on the side of the fixed die 210. The threaded rod 252 threads through the extension plate 251, and the end of the threaded rod 252 is movably connected to the supplementary module 220. By setting the extension plate 251 and the threaded rod 252, the threaded rod 252 is rotated, and the threaded rod 252 rotates and can move axially, thereby driving the supplementary module 220 to move.

[0038] In a specific implementation scheme, a knob 2521 is fixedly connected to one end of the threaded rod 252 away from the supplementary module 220. By setting the knob 2521, it is convenient to rotate the threaded rod 252 by turning the knob 2521, so as to facilitate operation.

[0039] In this embodiment, the arc-shaped punch 130 , the fixed die 210 and the supplementary module 220 are all provided with a forming groove 260 .

[0040] The working principle of the large-diameter pipe cold bending forming mold is as follows: when in use, the large-diameter pipe with cold bending is placed on the workbench 110 between the arc-shaped punch 130 and the fixed die 210, and the hydraulic cylinder 120 is started. The hydraulic cylinder 120 pushes the arc-shaped punch 130 to move, and the arc-shaped punch 130 moves along the guide rod 140 close to the fixed die 210 under the guidance of the sliding block 131, and the pipe is extruded and formed in the forming groove 260 of the arc-shaped punch 130 and the fixed die 210. At the same time, the rotatable knob 2521 drives the threaded rod 252 to rotate, and the threaded rod 252 rotates and can move axially, thereby driving the supplementary module 220 to move. The supplementary module 220 moves linearly under the guidance of the slider 222, and the slider 222 moves to the end of the slide groove 213. The supplementary module 220 is aligned with the fixed die 210, and the two forming grooves 260 are butted. When the pipe is extruded again, the bending degree of the pipe will be changed, so that the direction of the pipe port can be changed to meet the needs, thereby greatly improving the practicality.

[0041] It should be noted that the specific model and specifications of the hydraulic cylinder 120 need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0042] The power supply and principle of the hydraulic cylinder 120 are clear to those skilled in the art and will not be described in detail here.

[0043] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A large-diameter pipe cold-bending forming die, characterized in that: include A cold pressing assembly (100), the cold pressing assembly (100) comprising a workbench (110), a hydraulic cylinder (120) and an arc-shaped punch (130), the hydraulic cylinder (120) being arranged on the top of the workbench (110), the arc-shaped punch (130) being slidably arranged on the top of the workbench (110) and connected to the hydraulic cylinder (120); An adjustment component (200), the adjustment component (200) comprising a fixed die (210), a supplementary module (220) and an adjustment positioning member (250), the fixed die (210) being fixedly connected to the top of the workbench (110), the supplementary module (220) being slidably arranged on the side of the fixed die (210), the adjustment positioning member (250) being arranged at one end of the fixed die (210), and the supplementary module (220) being connected to the adjustment positioning member (250).

2. A large-diameter pipe cold-bending forming die according to claim 1, characterized in that: The workbench (110) is provided with a through hole at the top and is fixedly connected with a guide rod (140); the bottom of the arc-shaped punch (130) is provided with a sliding block (131), and the sliding block (131) is slidably sleeved on the surface of the guide rod (140); the bottom of the fixed die (210) is provided with a guide block (212), and the guide block (212) is sleeved on the surface of the guide rod (140).

3. A large-diameter pipe cold-bending forming die according to claim 1, characterized in that: A sliding groove (213) is provided on the side of the fixed concave mold (210), and a sliding block (222) is provided on one side of the supplementary module (220), and the sliding block (222) and the inner wall of the sliding groove (213) are clearance-matched.

4. A large-diameter pipe cold-bending forming die according to claim 3, characterized in that: The slide groove (213) and the slide block (222) are both T-shaped.

5. The large-diameter pipe cold-bending forming die according to claim 1, characterized in that: The adjustment positioning member (250) includes an extension plate (251) and a threaded rod (252), wherein the extension plate (251) is arranged on the side of the fixed die (210), the threaded rod (252) is threadedly penetrated through the extension plate (251), and the end of the threaded rod (252) is movably connected to the supplementary module (220).

6. A large-diameter pipe cold-bending forming die according to claim 5, characterized in that: One end of the threaded rod (252) away from the supplementary module (220) is fixedly connected to a knob (2521).

7. The large-diameter pipe cold-bending forming die according to claim 1, characterized in that: The arc-shaped male mold (130), the fixed female mold (210) and the supplementary module (220) are all provided with a molding groove (260).

8. The large-diameter pipe cold-bending forming die according to claim 1, characterized in that: The bottom of the workbench (110) is provided with a supporting leg (160), and the bottom of the supporting leg (160) is provided with an anti-slip pad.

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