Steel pipe bending die with clamping function

Abstract

The utility model relates to the field of steel pipe bending dies, in particular to a steel pipe bending die with a clamping function. The utility model provides a steel pipe bending die with a clamping function, which comprises a lower die body, a steel pipe body and an upper die body, the steel pipe body is placed on the upper portion of the lower die body, the upper die body is placed on the steel pipe body, the steel pipe bending die further comprises limiting wheels, guide rods, clamping plates and the like, the limiting wheels are symmetrically and rotatably connected to the lower die body, and the clamping plates are arranged on the guide rods. Guide rods are symmetrically connected to the outer sides of the limiting wheels, and a clamping plate is slidably connected between the two guide rods. A steel pipe needing to be bent is placed on the clamping plate, when the upper die is pressed downwards, the clamping plate makes contact with the steel pipe and drives the steel pipe to move, the steel pipe moves to make contact with the limiting wheel, friction force is generated, the limiting wheel is driven to rotate, and the limiting wheel rotates to drive the clamping plate and all components on the clamping plate to rotate; and the clamping plates rotate, so that the placing grooves in the clamping plates move along with the steel pipes to be tightly attached to the steel pipes, and the steel pipes are conveniently clamped.

Description

Technical Field

[0001] The utility model relates to the field of steel pipe bending dies, in particular to a steel pipe bending die with a clamping function. Background Art

[0002] Steel pipes are used to transport fluids and powdered solids, exchange heat, and manufacture mechanical parts and containers. They are also an economical steel material.

[0003] At present, when bending steel pipes, the steel pipes need to be placed on the lower mold. After the steel pipes are placed, the cylinder is started to drive the upper mold to move downward. The upper mold moves to contact the steel pipe and drives it to move downward. When the steel pipe moves to fit with the lower mold, the shape of the steel pipe is gradually bent. However, in the bending process of the steel pipe, the steel pipe is only flatly stuck in the placement groove on the lower mold, which makes it easy to fall off the placement groove and move randomly during the bending process. The random movement of the steel pipe affects the shape it needs to be bent, resulting in its bent shape not meeting the standard, which affects the bending efficiency of the steel pipe.

[0004] In view of the above problems, it is necessary to design a steel pipe bending die with a clamping function. Utility Model Content

[0005] In order to overcome the disadvantage that the steel pipe is only flatly clamped in the placement groove of the lower mold, which causes it to easily fall off from the placement groove and move randomly during the bending process, the utility model provides a steel pipe bending mold with a clamping function.

[0006] The technical implementation scheme of the utility model is: a steel pipe bending mold with a clamping function, including a lower mold body, a steel pipe body and an upper mold body, the steel pipe body is placed on the upper part of the lower mold body, the upper mold body is placed on the steel pipe body, and also includes a limiting wheel, a guide rod, a clamping plate, an elastic part and a supporting pad. The limiting wheel is symmetrically rotatably connected to the lower mold body, the guide rod is symmetrically connected to the outer side of the limiting wheel, the clamping plate is slidably connected between the two guide rods, the elastic part is connected between the inner side of the clamping plate and the guide rod, and the support pads are symmetrically connected on both sides of the lower mold body.

[0007] As an improvement of the above solution, a torsion spring is also included, and the lower mold body and both sides of the limiting wheel are connected with a torsion spring.

[0008] As an improvement of the above scheme, it also includes connecting parts and fixing parts. The upper mold body is symmetrically connected with the connecting parts, and the fixing parts are symmetrically threadedly connected between the two connecting parts.

[0009] As an improvement of the above solution, it also includes a fixing nut, and the fixing nut is symmetrically threadedly connected to the lower mold body.

[0010] As an improvement of the above solution, a protective pad is also included. The groove on the limiting wheel is sleeved with the protective pad.

[0011] As an improvement of the above solution, a semi-arc-shaped placement groove is provided on the clamping plate.

[0012] The beneficial effect of the utility model is that by placing the steel pipe to be bent on the clamping plate, when the upper mold is pressed down, it contacts the steel pipe and drives it to move, the steel pipe moves and contacts the limiting wheel and generates friction, so that it drives the limiting wheel to rotate, and the rotation of the limiting wheel drives the clamping plate and all the components thereon to rotate, and the rotation of the clamping plate makes the placement groove thereon fit closely thereon as the steel pipe moves, so that the steel pipe is easy to clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the lower mold body, limiting wheels, guide rods and other components of the utility model.

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the components such as the clamping plate, the elastic member and the torsion spring of the utility model.

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the upper mold body, connecting parts, fixing parts and other parts of the utility model.

[0017] The reference numbers in the figure are: 1. lower mold body, 2. limiting wheel, 3. guide rod, 4. clamping plate, 5. elastic part, 6. supporting pad, 7. torsion spring, 8. steel pipe body, 9. upper mold body, 10. connecting part, 11. fixing part, 12. fixing nut, 13. protective pad. DETAILED DESCRIPTION

[0018] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0019] Embodiment: A steel pipe bending die with a clamping function, such as Figure 1-Figure 4As shown, it includes a lower mold body 1, a limiting wheel 2, a guide rod 3, a clamping plate 4, an elastic member 5, a support pad 6, a torsion spring 7, a steel pipe body 8, an upper mold body 9, a connecting member 10, a fixing member 11, a fixing nut 12 and a protective pad 13. The lower mold body 1 is symmetrically rotatably connected to the limiting wheel 2, and the outer side of the limiting wheel 2 is symmetrically connected to the guide rod 3, which can play a guiding role. The clamping plate 4 is slidably connected between the two guide rods 3. The clamping plate 4 is provided with a semi-arc placement groove for clamping the steel pipe. An elastic member 5 is connected between the inner side of the clamping plate 4 and the guide rod 3. The elastic member 5 is a tension spring. Support pads are symmetrically connected on both sides of the lower mold body 1. Plate 6 can support the clamping plate 4 when it is in the initial state. Torsion springs 7 are connected to both sides of the lower mold body 1 and the limiting wheel 2. A steel pipe body 8 is placed on the upper part of the lower mold body 1. An upper mold body 9 is placed on the steel pipe body 8. Connectors 10 are symmetrically connected to the upper mold body 9. A fixing member 11 is symmetrically threaded between the two connecting members 10. The upper mold body 9 can be fixed to the pushing plate on the cylinder. A fixing nut 12 is symmetrically threaded on the lower mold body 1. The lower mold body 1 can be fixed to the workbench through the fixing nut 12. A protective pad 13 is provided on the groove on the limiting wheel 2 to protect the steel pipe when it moves.

[0020] When the device is needed, when the steel pipe needs to be bent, the staff puts the device on the workbench. After the device is placed, the fixing nut 12 is placed on the device, and the fixing nut 12 is rotated to rotate along the device. When the fixing nut 12 is rotated to a suitable position, the fixing nut 12 is loosened to facilitate fixing the device on the workbench. Because the initial state of the upper mold is not pressed down, the staff then puts the steel pipe into the placement groove on the two clamping plates 4. During the placement of the steel pipe, the steel pipe also contacts the limiting wheel 2 and is located on it. After the steel pipe is placed, the cylinder is started again. The cylinder drives the push plate and the upper mold thereon to move downward. When the upper mold moves and contacts the steel pipe, it drives it to move downward. During the movement of the tube, when the steel tube moves and contacts with the limiting wheel 2, friction will be generated, causing it to rotate along the lower mold, and the torsion spring 7 will be deformed. At the same time, the rotation of the limiting wheel 2 drives the clamping plate 4 to rotate. During the rotation of the clamping plate 4, the placement groove on the clamping plate 4 is also closely fitted with the steel tube as it is pressed down, and the steel tube is also clamped during the fitting process to prevent the steel tube from moving randomly during bending and affecting its bent shape. After the clamping plate 4 is rotated to a suitable position, it moves inward along the guide rod 3, and the elastic member 5 is compressed. When the steel tube is pressed down to contact and be stuck in the lower mold, the upper mold and the lower mold are in contact and fitted together, and then the part of the steel tube that needs to be bent is completely bent. When the steel tube After bending, the cylinder drives the push plate and the upper mold thereon to move upward. When the upper mold moves back to its original position, the cylinder is closed, and the staff takes the bent steel pipe out of the lower mold to facilitate the collection of the bent steel pipe. Subsequently, under the reset action of the torsion spring 7, the limiting wheel 2 rotates back to its original position along the lower mold in the opposite direction. During the reverse rotation of the limiting wheel 2, the limiting wheel 2 drives the clamping plate 4 and all the components thereon to rotate back to their original positions in the opposite direction. After the clamping plate 4 returns to its original position, it contacts and is supported by the supporting pad 6, which can limit the clamping plate 4. Subsequently, under the reset action of the elastic member 5, the clamping plate 4 moves outward along the guide rod 3. The above operation is repeated. If the upper mold is damaged after long-term use, it is necessary to When replacing it, the staff rotates the fixing part 11 along the connecting part 10. When the fixing part 11 is rotated to a suitable position, the fixing part 11 is removed. After the fixing part 11 is removed, the damaged upper mold is removed so that the damaged upper mold is out of contact with the push plate on the cylinder. The replaced upper mold is aligned with the push plate on the cylinder, and the replaced upper mold is fit with the push plate on the cylinder. The fixing part 11 is then placed on the connecting part 10, and the fixing part 11 is rotated in the opposite direction along the connecting part 10 and the push plate on the cylinder. When the fixing part 11 is rotated in the opposite direction to a suitable position, the fixing part 11 is released to facilitate fixing the replaced upper mold on the push plate on the cylinder, so as to facilitate the bending operation of the steel pipe.

[0021] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A steel pipe bending die with a clamping function, comprising a lower die body (1), a steel pipe body (8) and an upper die body (9), wherein the steel pipe body (8) is placed on the upper part of the lower die body (1), and the upper die body (9) is placed on the steel pipe body (8), wherein: It also comprises a limiting wheel (2), a guide rod (3), a clamping plate (4), an elastic member (5) and a supporting pad (6), wherein the limiting wheel (2) is symmetrically rotatably connected to the lower mold body (1), the guide rod (3) is symmetrically connected to the outer side of the limiting wheel (2), the clamping plate (4) is slidably connected between the two guide rods (3), the elastic member (5) is connected between the inner side surface of the clamping plate (4) and the guide rod (3), and the supporting pad (6) is symmetrically connected to the lower mold body (1) on both sides.

2. A steel pipe bending die with a clamping function according to claim 1, characterized in that: It also includes a torsion spring (7), which is connected to both sides of the lower mold body (1) and the limiting wheel (2).

3. A steel pipe bending die with a clamping function according to claim 2, characterized in that: It also includes a connecting piece (10) and a fixing piece (11), wherein the connecting piece (10) is symmetrically connected to the upper mold body (9), and the fixing piece (11) is symmetrically threadedly connected between the two connecting pieces (10).

4. A steel pipe bending die with a clamping function according to claim 3, characterized in that: It also includes a fixing nut (12), which is symmetrically threadedly connected to the lower mold body (1).

5. A steel pipe bending die with a clamping function according to claim 4, characterized in that: It also includes a protective pad (13), which is sleeved on a groove on the limiting wheel (2).

6. A steel pipe bending die with a clamping function according to claim 5, characterized in that: The clamping plate (4) is provided with a semi-arc-shaped placement groove.

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