A steel-plastic composite pipe production line unwinding device

Abstract

This utility model belongs to the field of steel-plastic composite pipe manufacturing technology, and discloses an unwinding device for a steel-plastic composite pipe production line, including an unwinding machine, a track, and a movable trolley mounted on the track. The unwinding machine includes a frame and an unwinding mandrel. The movable trolley is equipped with a lifting platform, and the frame is equipped with a support. The support includes a first support column, a second support column, a crossbeam, a support seat, and a lifting adjustment component mounted on the crossbeam for driving the support seat to rise and fall. This utility model has the following advantages and effects: During the unwinding process, the support structure can support the unwinding mandrel, improving the overall stability of the unwinding equipment and enhancing the safety of the unwinding operation. During the loading of the steel coil onto the unwinding mandrel, the support structure, through the rotation of the first support column, causes the crossbeam to move away from between the first and second support columns, facilitating the loading of the steel coil onto the unwinding mandrel.

Description

Technical Field

[0001] This utility model relates to the field of steel-plastic composite pipe manufacturing technology, and in particular to an unwinding device for a steel-plastic composite pipe production line. Background Technology

[0002] Steel-plastic composite pipe, also known as plastic-coated steel pipe, plastic-coated pipe, or plastic-coated composite steel pipe, is a steel pipe with a layer of plastic anti-corrosion coating fused to the inner surface of the steel pipe or to both the inner and outer surfaces through processes such as spraying, rolling, dipping, or suction. It features excellent corrosion resistance and low frictional resistance.

[0003] In the production line of steel-plastic composite pipes, the unwinding machine is an essential piece of equipment. Its main function is to process steel strip coils during the production process. The huge steel coils are loaded onto the unwinding machine, which releases the steel strip with a constant and appropriate tension and sends it to the subsequent process. It is necessary to ensure that the steel strip can be unwound smoothly without deviation, and to prevent the steel strip from being stretched, deformed or wrinkled. The unwinding machine plays a fundamental and key role in ensuring production efficiency and the final quality of the pipes.

[0004] There are few publicly available documents on uncoiling machines specifically designed for steel-plastic composite pipe production lines. For example, Chinese utility model patent CN202691325U discloses a steel-plastic composite pipe production line with an inner lining, which involves an uncoiling machine. Another example is Chinese patent application CN113877985A, which discloses a steel strip uncoiling machine with stable uncoiling capabilities. While this type of uncoiling machine facilitates automated loading of steel coils, its stability during uncoiling is not high. Currently, some uncoiling machines in the industry use a support structure to support the uncoiling mandrel. Although this improves the structural stability of the uncoiling machine, the support needs to be disassembled before loading the steel coil, increasing operational complexity and reducing production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an unwinding device for a steel-plastic composite pipe production line, which has the advantages of good structural stability and easy automated loading of steel coils.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a unwinding device for a steel-plastic composite pipe production line, comprising an unwinding machine, the unwinding machine comprising a frame, an unwinding mandrel, a track, and a movable trolley movably mounted on the track, the movable trolley being provided with a lifting platform, the frame being provided with a support, the support comprising a first support column, a second support column, a crossbeam, a support seat, and a lifting adjustment component mounted on the crossbeam for driving the support seat to rise and fall, the lower end of the first support column being rotatably connected to the frame, the crossbeam being fixed to the first support column, the side wall of the second support column having a slot for the crossbeam to be embedded in, the lower end of the second support column being fixed to the frame, and the upper surface of the support seat having a support groove for the unwinding mandrel to be embedded in.

[0007] By adopting the above technical solution, when steel coils need to be loaded onto the unwinding mandrel, the lifting adjustment component lowers the support seat and separates it from the unwinding mandrel. The first support column rotates, causing the crossbeam to rotate. The crossbeam first leaves the slot and then moves away from the space between the first and second supports. The moving trolley moves along the track to deliver the steel coil to the unwinding mandrel. The lifting platform lowers and detaches from the steel coil, and the moving trolley moves away from the unwinding mandrel. The first support column rotates, causing the crossbeam to rotate until it is embedded in the slot. The lifting adjustment component drives the support seat to rise and lift the unwinding mandrel. During the unwinding operation of the unwinding equipment, the support structure can effectively support the unwinding mandrel, improving the stability of the unwinding equipment. At the same time, the flexibility of the support structure will not interfere with the loading operation of the steel coil.

[0008] A further feature of this invention is that a slewing bearing is installed between the first support column and the frame.

[0009] By adopting the above technical solution, a slewing bearing is installed between the first support column and the frame, which can realize the function of the first support column rotating relative to the frame, and also give the first support column good support stability.

[0010] A further feature of this invention is that the lifting adjustment component is a hydraulic cylinder, which is mounted and fixed on the crossbeam.

[0011] A further feature of this invention is that a guide groove is formed on the crossbeam, and the support seat is embedded in the guide groove.

[0012] By adopting the above technical solution, the support base can move up and down within the guide groove.

[0013] A further feature of this invention is that the lifting platform is a hydraulic lifting platform.

[0014] By adopting the above technical solutions, the hydraulic lifting platform is an existing product with mature technology.

[0015] A further feature of this invention is that the upper surface of the lifting platform is formed with a concave surface, which is used to place the steel strip coil.

[0016] A further feature of this invention is that: a rack is slidably connected to the frame; a gear is fixed to the lower end of the first support column; the gear meshes with the rack; one end of the rack is provided with a contact portion for contacting the moving trolley; and a return spring is fixed to the other end of the rack, with the end of the return spring fixed to the frame.

[0017] By adopting the above technical solution, the moving trolley supporting the steel coil contacts the contact part and pushes the rack to move as it moves closer to the unwinding mandrel, thereby driving the rotation of the gear and the first support. After the steel coil is loaded onto the unwinding mandrel, the empty moving trolley moves away from the unwinding mandrel, and the return spring drives the rack to move, thereby driving the rotation of the gear and the first support.

[0018] The above structure has at least the following advantages: First, it eliminates the need for an additional power unit to drive the rotation of the first support column, reducing the manufacturing and operating costs of the unwinding equipment. Second, as the moving trolley approaches the unwinding mandrel, the mechanical structure drives the first support column to rotate, causing the crossbeam to move away from the space between the first and second supports. This is a foolproof design, preventing the steel coil on the moving trolley from directly impacting the crossbeam and avoiding damage to the unwinding equipment and the steel coil.

[0019] A further feature of this invention is that the contact part is made of wear-resistant rubber.

[0020] A further feature of this invention is that the number of tracks is two, and the bottom of the mobile trolley is equipped with two sets of wheelsets and a power device that drives the wheelsets to rotate.

[0021] The beneficial effects of this utility model are: during the unwinding process of the unwinding equipment, the support structure can support the unwinding mandrel, improving the overall stability of the unwinding equipment and enhancing the safety of the unwinding operation. During the loading of the steel coil onto the unwinding mandrel, the support structure, through the rotation of the first support column, causes the crossbeam to move away from the space between the first and second supports, facilitating the loading of the steel coil onto the unwinding mandrel. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram showing the separation state between the rack, return spring, and frame of this utility model.

[0024] In the diagram, 1. Frame; 2. Unwinding mandrel; 3. Support; 31. First support column; 32. Second support column; 321. Groove; 33. Crossbeam; 34. Support base; 341. Support groove; 35. Lifting adjustment component; 4. Track; 5. Moving trolley; 51. Wheelset; 6. Lifting platform; 61. Concave surface; 7. Rack; 71. Contact part; 8. Gear; 9. Return spring. Detailed Implementation

[0025] An unwinding device for a steel-plastic composite pipe production line, such as Figure 1 , Figure 2 As shown, the system includes an unwinding machine, a mobile trolley 5, and two tracks 4. The unwinding machine includes a frame 1 and an unwinding mandrel 2 mounted on the frame 1. The mobile trolley 5 is equipped with two sets of wheelsets 51 and a power unit that drives the wheelsets 51 to rotate. The wheelsets 51 are placed on the tracks 4, allowing the mobile trolley 5 to move along the tracks 4. The power unit is a geared motor. The mobile trolley 5 is equipped with a lifting platform 6, which is a hydraulic lifting platform 6. The upper surface of the lifting platform 6 has a concave surface 61 for placing the steel strip coil.

[0026] A support frame 3 is mounted on the frame 1. The support frame 3 includes a first support column 31, a second support column 32, a crossbeam 33, a support base 34, and a lifting adjustment component 35 mounted on the crossbeam 33 for driving the support base 34 to rise and fall. A slewing bearing is installed between the first support column 31 and the frame 1, allowing the first support column 31 to rotate on the frame 1. The crossbeam 33 is fixed to the first support column 31. The side wall of the second support column 32 has a slot 321 for the crossbeam 33 to be inserted into. The lower end of the second support column 32 is fixed to the frame 1. A guide hole is provided on the crossbeam 33, and the support base 34 is inserted into the guide hole and can rise and fall within the guide hole. The upper surface of the support base 34 is formed with a support groove 341 for inserting the mandrel 2. The lifting adjustment component 35 is a hydraulic cylinder, which is mounted and fixed on the crossbeam 33, and the piston rod of the hydraulic cylinder is fixed to the support base 34.

[0027] A rack 7 is slidably connected to the frame 1. A gear 8 is fixed to the lower end of the first support column 31. The gear 8 meshes with the rack 7. One end of the rack 7 is provided with a contact part 71, which is used to contact the moving trolley 5. A return spring 9 is fixed to the other end of the rack 7, and the end of the return spring 9 is fixed to the frame 1. The contact part 71 is made of wear-resistant rubber.

[0028] Working principle: When a steel coil needs to be loaded onto the unwinding mandrel 2, the lifting adjustment component 35 adjusts the support seat 34 to descend and separate from the unwinding mandrel 2. The first support column 31 rotates, driving the crossbeam 33 to rotate. The crossbeam 33 first leaves the slot 321, and then moves away from the space between the first support column 31 and the second support column 32. The moving trolley 5 moves along the track 4 to deliver the steel coil to the unwinding mandrel 2. The lifting platform 6 descends and detaches from the steel coil, and the moving trolley 5 moves away from the unwinding mandrel 2. The first support column 31 rotates, driving the crossbeam 33 to rotate until the crossbeam 33 is embedded in the slot 321. The lifting adjustment component 35 drives the support seat 34 to rise and lift the unwinding mandrel 2.

Claims

1. A non-coiling device for a steel-plastic composite pipe production line, comprising a non-coiling machine, wherein the non-coiling machine comprises a frame (1) and a non-coiling mandrel (2), characterized in that: It also includes a track (4), a movable trolley (5) movably mounted on the track (4), a lifting platform (6) on the movable trolley (5), a bracket (3) on the frame (1), the bracket (3) including a first pillar (31), a second pillar (32), a crossbeam (33), a support seat (34), and a lifting adjustment component (35) mounted on the crossbeam (33) for driving the support seat (34) to rise and fall. The lower end of the first pillar (31) is rotatably connected to the frame (1), the crossbeam (33) is fixed on the first pillar (31), the side wall of the second pillar (32) is provided with a slot (321) for the crossbeam (33) to be embedded, the lower end of the second pillar (32) is fixed on the frame (1), and the upper surface of the support seat (34) is formed with a support groove (341) for the unwinding mandrel (2) to be embedded.

2. The unwinding equipment for a steel-plastic composite pipe production line according to claim 1, characterized in that: A slewing bearing is installed between the first support column (31) and the frame (1).

3. The unwinding equipment for a steel-plastic composite pipe production line according to claim 1, characterized in that: The lifting adjustment component (35) is a hydraulic cylinder, which is installed and fixed on the crossbeam (33).

4. The unwinding equipment for a steel-plastic composite pipe production line according to claim 3, characterized in that: The crossbeam (33) has a guide groove formed on it, and the support base (34) is embedded in the guide groove.

5. The unwinding equipment for a steel-plastic composite pipe production line according to claim 1, characterized in that: The lifting platform (6) is a hydraulic lifting platform (6).

6. The unwinding equipment for a steel-plastic composite pipe production line according to claim 1 or 5, characterized in that: The upper surface of the lifting platform (6) is formed with a concave surface (61), which is used to place the steel strip coil.

7. The unwinding equipment for a steel-plastic composite pipe production line according to claim 1, characterized in that: The frame (1) is slidably connected to a rack (7), and a gear (8) is fixed at the lower end of the first support (31). The gear (8) meshes with the rack (7). One end of the rack (7) is provided with a contact part (71) for contacting the moving trolley (5). The other end of the rack (7) is fixed with a return spring (9), and the end of the return spring (9) is fixed on the frame (1).

8. The unwinding equipment for a steel-plastic composite pipe production line according to claim 7, characterized in that: The contact part (71) is made of wear-resistant rubber.

9. The unwinding equipment for a steel-plastic composite pipe production line according to claim 1, characterized in that: The number of tracks (4) is two, and the bottom of the mobile trolley (5) is equipped with two sets of wheelsets (51) and a power device that drives the wheelsets (51) to rotate.

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