Cylinder pre-tensioning device for pipe winding

Abstract

The utility model provides a cylinder pre -tensioning device for pipe winding, relate to pipe winding processing technical field, the utility model discloses the top fixed mounting of base has the frame, the both sides sliding installation of frame inner wall have same moving plate, the top of frame is provided with the fixed mounting of one end of air cylinder telescopic link in the top of moving plate, the bottom of moving plate and the top of base all install the disc, the both sides of two disc close all be provided with fixing device, fixing device is through setting up two U type blocks and two clamping blocks respectively to the inner wall of cylinder support fixed and to the outside clamping fixed, the utility model discloses the inner wall of cylinder is supported through setting up two U type blocks, and the outer surface of cylinder is clamped through setting up two clamping blocks, can make the fixed cylinder more stable, and the inner wall of cylinder plays the role of supporting, is favorable to preventing cylinder from being excessively clamped and leading to cylinder deformation and damage.

Description

Technical Field

[0001] This utility model relates to the field of tube rolling technology, and in particular to a cylindrical pre-tensioning device for tube rolling. Background Technology

[0002] The pre-tensioning device for cylinders used in pipe rolling is a device used to pre-tension the produced cylindrical workpieces during the pipe rolling process. It can apply axial or circumferential tension to the cylinder, forcing the material to undergo slight plastic deformation, counteracting the elastic rebound tendency, and avoiding cracking or deformation caused by stress release during subsequent use.

[0003] When using a pre-tensioning device for tube coiling to pre-tension the cylinders produced by tube coiling, it is necessary to use a clamp to clamp the outer surfaces of both ends of the cylinder before tensioning. To prevent the cylinder from detaching from the clamp during tensioning, the clamp will hold the cylinder relatively tightly. However, the cylinder is hollow and unsupported. In some cases, the cylinder may deform and be damaged due to excessive clamping. Utility Model Content

[0004] This utility model proposes a pre-tensioning device for a rolled tube to address the problem that a hollow cylinder without support may deform and be damaged due to excessive clamping in some cases.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pre-tensioning device for a rolled tube, comprising a base, a frame fixedly installed on the top of the base, a movable plate slidably installed on both sides of the inner wall of the frame, one end of a cylinder telescopic rod fixedly installed on the top of the movable plate, a disc installed on the bottom of the movable plate and the top of the base, and a fixing device provided on the side of the two discs that are close to each other, wherein the fixing device provides support and fixation for the inner wall of the cylinder and clamping and fixing for the outside by setting two U-shaped blocks and two clamping blocks respectively.

[0006] The effect achieved by the above components is as follows: by setting two U-shaped blocks to support the inner wall of the cylinder and by setting two clamping blocks to clamp the outer surface of the cylinder, the cylinder can be fixed more securely, while the inner wall of the cylinder is supported, which helps to prevent the cylinder from being over-clamped and deformed or damaged.

[0007] Preferably, the fixing device includes two U-shaped blocks, which are symmetrically and slidably mounted on one side of the disc. A clamping block is slidably mounted on the inner wall of each U-shaped block. A threaded rod is rotatably mounted on one side of each clamping block via a bearing. The outer surface of the threaded rod is threadedly connected to the inner wall of the U-shaped block. A trapezoidal block is fixedly mounted on one side of each U-shaped block. A push plate is slidably mounted on one side of the inclined side of each trapezoidal block. The push plate is slidably mounted on one side of the disc. An electric telescopic rod is mounted on one side of the top of the disc. One end of the electric telescopic rod is fixedly mounted on one side of the push plate.

[0008] The effect achieved by the above components is as follows: one end of the cylinder is placed on the two U-shaped blocks, and the cylinder is positioned between the two clamping blocks. The electric telescopic rod is activated, which pushes the push plate. During the movement of the push plate, a horizontal component force is applied to each of the two trapezoidal blocks, causing the two trapezoidal blocks to move away from each other. The trapezoidal blocks will drive the U-shaped blocks to move until one side of each of the two U-shaped blocks abuts against the inner wall of the cylinder. Then, the threaded rod is rotated, which drives the clamping blocks to move towards the outer surface of the cylinder until one side of each clamping block abuts against the outer surface of the cylinder. Thus, the two clamping blocks can clamp the outer surface of the cylinder, while the two U-shaped blocks can support the inner wall of the cylinder, which helps to prevent the cylinder from being deformed and damaged due to excessive clamping.

[0009] Preferably, silicone blocks are adhered to the side of the two clamping blocks that are close to each other, as well as to one side of the inner wall of the U-shaped block.

[0010] The effect achieved by the above components is as follows: by setting up silicone blocks to replace the outer surfaces of the clamping blocks and U-shaped blocks in contact with the outer surface and inner wall of the cylinder, the friction between the clamping blocks and U-shaped blocks and the cylinder can be increased, making the clamping blocks and U-shaped blocks more secure in fixing the cylinder. At the same time, the silicone blocks can also play a certain protective role for the cylinder.

[0011] Preferably, an operating block is fixedly installed at the far ends of the two threaded rods, and the outer surface of the operating block is provided with a protrusion.

[0012] The effect achieved by the above components is as follows: by setting the operating block, rotating the operating block can drive the threaded rod to rotate. At the same time, the outer surface of the operating block is provided with protrusions, which can effectively increase the friction of the outer surface of the operating block and have an anti-slip effect when rotating the operating block.

[0013] Preferably, the inner wall of the push plate is threaded with bolts.

[0014] The effect achieved by the above components is that by rotating the bolt, one end of the bolt passes through the inner wall of the push plate until one end of the bolt abuts against one side of the disc, the bolt can provide auxiliary fixation between the push plate and the disc, which helps to prevent the push plate from shifting.

[0015] Preferably, a rubber strip is adhered to the inner wall of one side of the disk, and the bolt is located on one side of the rubber strip.

[0016] The effect achieved by the above components is that by setting a rubber strip to replace one side of the disc abutting against one end of the bolt, the friction between the bolt and the disc can be increased, making the bolt more securely fixed to the push plate.

[0017] Preferably, a spring is fixedly installed on one side of the U-shaped block, and one end of the spring is fixedly installed on the top of the operating table.

[0018] The effect achieved by the above components is as follows: by setting springs, when the two U-shaped blocks move away from each other under the action of the push plate, the U-shaped blocks compress the springs, causing the springs to deform. When the electric telescopic rod is activated to drive the push plate away from the two U-shaped blocks, both springs will reset and drive the two U-shaped blocks to automatically move closer to each other, which facilitates the disassembly of the cylinder and the subsequent installation of the cylinder to be processed.

[0019] Preferably, the two springs have the same round rod inside, both ends of which are fixed to the top of the disc, and the U-shaped block is slidably mounted on the outer surface of the round rod.

[0020] The effect achieved by the above components is that by setting the round rod, the round rod can limit and guide the spring, which helps to prevent the spring from easily bending during deformation.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, by setting two U-shaped blocks to support the inner wall of the cylinder and by setting two clamping blocks to clamp the outer surface of the cylinder, the cylinder can be more securely fixed while supporting the inner wall of the cylinder. This helps to prevent the cylinder from being over-clamped, which could lead to deformation and damage. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the main body of this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the fixing device of this utility model;

[0025] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0026] Figure 4 This is a three-dimensional structural diagram of the spring of this utility model.

[0027] Legend: 1. Base; 2. Frame; 3. Cylinder telescopic rod; 4. Moving plate; 5. Disc; 6. Fixing device; 61. U-shaped block; 62. Clamping block; 63. Threaded rod; 64. Trapezoidal block; 65. Push plate; 66. Electric telescopic rod; 67. Silicone block; 68. Operating block; 69. Bolt; 610. Rubber strip; 611. Spring; 612. Round rod. Detailed Implementation

[0028] Example 1, referring to Figures 1-3 As shown, this embodiment discloses a pre-tensioning device for a rolled tube cylinder, including a base 1. A frame 2 is fixedly installed on the top of the base 1. The same movable plate 4 is slidably installed on both sides of the inner wall of the frame 2. A cylinder telescopic rod 3 (the model of the cylinder telescopic rod 3 can be TN20-15-S or TN50-200) is provided on the top of the frame 2. One end of the cylinder telescopic rod 3 is fixedly installed on the top of the movable plate 4. A disc 5 is installed on the bottom of the movable plate 4 and the top of the base 1. A fixing device 6 is provided on the side of the two discs 5 that are close to each other. The fixing device 6 supports and fixes the inner wall of the cylinder and clamps and fixes the outer surface of the cylinder by setting two U-shaped blocks 61 and two clamping blocks 62, respectively. By setting two U-shaped blocks 61 to support the inner wall of the cylinder and setting two clamping blocks 62 to clamp the outer surface of the cylinder, the fixing of the cylinder can be more stable, while supporting the inner wall of the cylinder. This helps to prevent the cylinder from being over-clamped, which would cause deformation and damage to the cylinder.

[0029] Reference Figure 2 and Figure 3As shown, the fixing device 6 includes two U-shaped blocks 61, which are symmetrically and slidably mounted on one side of the disc 5. A clamping block 62 is slidably mounted on the inner wall of each U-shaped block 61. A threaded rod 63 is rotatably mounted on one side of each clamping block 62 via a bearing. The outer surface of the threaded rod 63 is threadedly connected to the inner wall of the U-shaped block 61. A trapezoidal block 64 is fixedly mounted on one side of each trapezoidal block 64. A push plate 65 is slidably mounted on one side of the hypotenuse of each trapezoidal block 64. An electric telescopic rod 66 (model JC35FA17) is mounted on one side of the top of the disc 5. One end of the electric telescopic rod 66 is fixedly mounted on one side of the push plate 65. When one end of a cylinder is placed on the two U-shaped blocks 61, with the cylinder positioned between the two clamping blocks 62, the electric telescopic rod 66 is activated, pushing the push plate 65. During its movement, the push plate 65 applies a horizontal component force to each of the two trapezoidal blocks 64. The two trapezoidal blocks 64 are moved away from each other, causing the U-shaped blocks 61 to move until one side of each U-shaped block 61 is in contact with the inner wall of the cylinder. Then, the threaded rod 63 is rotated, causing the clamping block 62 to move towards the outer surface of the cylinder until one side of the clamping block 62 is in contact with the outer surface of the cylinder. At this point, the two clamping blocks 62 can clamp the outer surface of the cylinder, while the two U-shaped blocks 61 can support the inner wall of the cylinder, which helps prevent excessive pressure on the cylinder. The clamping causes deformation and damage to the cylinder; silicone blocks 67 are bonded to the side of the two clamping blocks 62 that are close to each other, as well as to one side of the inner wall of the U-shaped block 61. By setting silicone blocks 67, the outer surfaces of the clamping blocks 62 and the U-shaped block 61 are replaced to abut against the outer surface and inner wall of the cylinder, which can increase the friction between the clamping blocks 62 and the U-shaped block 61 and the cylinder, making the clamping blocks 62 and the U-shaped block 61 more firmly fixed to the cylinder. At the same time, silicone blocks 67 can also play a certain protective role for the cylinder.

[0030] Reference Figure 2 and Figure 3 As shown, an operating block 68 is fixedly installed at the far ends of the two threaded rods 63. The outer surface of the operating block 68 is provided with protrusions. By setting the operating block 68, rotating the operating block 68 can drive the threaded rod 63 to rotate. At the same time, the protrusions on the outer surface of the operating block 68 can effectively increase the friction of the outer surface of the operating block 68, and have an anti-slip effect when rotating the operating block 68.

[0031] Reference Figure 2 and Figure 3As shown, a bolt 69 is threaded into the inner wall of the push plate 65. By rotating the bolt 69, one end of the bolt 69 passes through the inner wall of the push plate 65 until one end of the bolt 69 abuts against one side of the disc 5. The bolt 69 can then provide auxiliary fixation between the push plate 65 and the disc 5, which helps to prevent the push plate 65 from shifting. A rubber strip 610 is adhered to the inner wall of one side of the disc 5. The bolt 69 is located on one side of the rubber strip 610. By setting the rubber strip 610 to replace one side of the disc 5 in abutting against one end of the bolt 69, the friction between the bolt 69 and the disc 5 can be increased, making the bolt 69 more firmly fixed to the push plate 65.

[0032] Reference Figure 4 As shown, a spring 611 is fixedly installed on one side of the U-shaped block 61, and one end of the spring 611 is fixedly installed on the top of the operating table. By setting the spring 611, when the two U-shaped blocks 61 move away from each other under the action of the push plate 65, the U-shaped blocks 61 will compress the spring 611, causing the spring 611 to deform. When the electric telescopic rod 66 is activated to drive the push plate 65 away from the two U-shaped blocks 61, both springs 611 will reset and drive the two U-shaped blocks 61 to automatically move closer to each other, which facilitates the disassembly of the cylinder and the subsequent installation of the cylinder to be processed. The two springs 611 have the same round rod 612 inside. Both ends of the round rod 612 are fixed to the top of the disc 5. The U-shaped block 61 slides on the outer surface of the round rod 612. By setting the round rod 612, the round rod 612 can limit and guide the spring 611, which helps to prevent the spring 611 from easily bending during deformation.

[0033] Working principle: Place one end of the cylinder on two U-shaped blocks 61, positioning the cylinder between two clamping blocks 62. Activate the electric telescopic rod 66, which pushes the push plate 65. During its movement, the push plate 65 applies a horizontal component force to each of the two trapezoidal blocks 64, causing them to move away from each other. The trapezoidal blocks 64 then move the U-shaped blocks 61, compressing the springs 611 and causing them to deform until the silicone blocks 67 on one side of both U-shaped blocks 61 are in contact with the inner wall of the cylinder. Rotate the bolt 69, allowing one end of the bolt 69 to pass through the inner wall of the push plate 65 until one end of the bolt 69 abuts against the rubber strip 610 on one side of the disc 5. The push plate 65 and the disc 5 can be fixed together. Then, the operating block 68 is rotated to drive the threaded rod 63 to rotate, so that the threaded rod 63 drives the clamping block 62 to move towards the outer surface of the cylinder until the silicone block 67 on one side of the clamping block 62 abuts against the outer surface of the cylinder. Then the two clamping blocks 62 can clamp the outer surface of the cylinder, while the two U-shaped blocks 61 can support the inner wall of the cylinder, which helps to prevent the cylinder from being deformed and damaged due to excessive clamping. When the electric telescopic rod 66 is activated to drive the push plate 65 away from the two U-shaped blocks 61, the two springs 611 will reset and drive the two U-shaped blocks 61 to automatically move closer to each other, which facilitates the disassembly of the cylinder and the subsequent installation of the cylinder to be processed.

Claims

1. A pre-tensioning device for a coiled tube, comprising a base (1), characterized in that: A frame (2) is fixedly installed on the top of the base (1). The same movable plate (4) is slidably installed on both sides of the inner wall of the frame (2). A cylinder telescopic rod (3) is provided on the top of the frame (2). One end of the cylinder telescopic rod (3) is fixedly installed on the top of the movable plate (4). A disc (5) is installed on the bottom of the movable plate (4) and the top of the base (1). A fixing device (6) is provided on the side of the two discs (5) that are close to each other. The fixing device (6) supports and fixes the inner wall of the cylinder and clamps and fixes the outside by setting two U-shaped blocks (61) and two clamping blocks (62) respectively.

2. The pre-tensioning device for a coiled tube according to claim 1, characterized in that: The fixing device (6) includes two U-shaped blocks (61), which are symmetrically slidably installed on one side of the disc (5). A clamping block (62) is slidably installed on the inner wall of the U-shaped block (61). A threaded rod (63) is rotatably installed on one side of the clamping block (62) through a bearing. The outer surface of the threaded rod (63) is threadedly connected to the inner wall of the U-shaped block (61). A trapezoidal block (64) is fixedly installed on one side of the U-shaped block (61). The same push plate (65) is slidably installed on one side of the inclined side of the two trapezoidal blocks (64). The push plate (65) is slidably installed on one side of the disc (5). An electric telescopic rod (66) is installed on one side of the top of the disc (5). One end of the electric telescopic rod (66) is fixedly installed on one side of the push plate (65). One end of the cylinder is placed on the two U-shaped blocks (61) and the cylinder is positioned between the two clamping blocks (62).

3. The pre-tensioning device for a coiled tube according to claim 2, characterized in that: Silicone blocks (67) are adhered to the side of the two clamping blocks (62) that are close to each other, and to one side of the inner wall of the U-shaped block (61).

4. The pre-tensioning device for a coiled tube according to claim 2, characterized in that: An operating block (68) is fixedly installed at one end of each of the two threaded rods (63) that are far apart. The outer surface of the operating block (68) is provided with a protrusion.

5. A pre-tensioning device for a coiled tube according to claim 2, characterized in that: Bolts (69) are threaded into the inner wall of the push plate (65).

6. The pre-tensioning device for a coiled tube according to claim 5, characterized in that: A rubber strip (610) is bonded to the inner wall of one side of the disc (5), and the bolt (69) is located on one side of the rubber strip (610).

7. A pre-tensioning device for a coiled tube according to claim 2, characterized in that: A spring (611) is fixedly installed on one side of the U-shaped block (61), and one end of the spring (611) is fixedly installed on the top of the operating table.

8. A pre-tensioning device for a coiled tube according to claim 7, characterized in that: The two springs (611) have the same round rod (612) inside, and both ends of the round rod (612) are fixed to the top of the disc (5). The U-shaped block (61) is slidably mounted on the outer surface of the round rod (612).

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