Winding steel pipe fixing device
By installing a tensioning component inside the fixed cylinder and utilizing the cylinder-driven conical block and tensioning block's cooperative structure, the slippage problem of the traditional winding steel pipe fixing method is solved, improving the equipment's reliability and film roll quality.
Patent Information
- Application Number
- CN202422518792.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-10-17
AI Technical Summary
Traditional methods of fixing coiled steel pipes often result in slippage, affecting the quality of the film roll and the reliability of the equipment, and the steel pipes have a low reuse rate.
A radially adjustable tensioning component, including a tensioning block and a conical block, is installed inside the fixed cylinder. The axial movement of the conical block is driven by a cylinder to cause the tensioning block to expand radially, providing tension force on the inner wall of the coiled steel pipe and increasing friction to reduce slippage.
It effectively reduces slippage during steel pipe winding, improves the reliability of winding operations and the quality of the film roll, and enhances the reusability of the steel pipe.
Smart Images
Figure CN223823071U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of winding steel pipe for winding film, in particular to a winding steel pipe fixing device. BACKGROUND
[0002] The bag making, product packaging and other fields need to use film materials in batches, and the film material needs to be wound around its own axis when winding. Among them, steel pipes are widely used in film processing due to their low manufacturing cost, convenient cutting and adjustment of size, and easy disassembly and assembly.
[0003] The applicant's workshop operators found that the traditional technology (such as Figure 1 ) usually uses the slope surface of a metal cone or a circular table to directly axially extrude and fix the two ends of the steel pipe, so as to install the winding steel pipe on the main shaft of the winding equipment. Although this fixing method is simple and fast, the effective contact area between the slope surface and the winding steel pipe is limited. When the equipment starts and stops, the inertia caused by the self weight of the film roll and the steel pipe causes the steel pipe to easily slip between the slope surface. In addition, due to the limited production cost and the high service life of the steel pipe, the reuse rate of the steel pipe is often high, and the slipping between the metal ends of the steel pipe occurs more frequently. The slipping phenomenon reduces the reliability of the winding operation, thereby adversely affecting the quality of the film roll. UTILITY MODEL CONTENTS
[0004] To solve the technical problems existing in the prior art, the utility model provides a winding steel pipe fixing device, which can reduce the slipping phenomenon by setting a radial adjustable tensioning component in the fixing cylinder, thereby ensuring the reliability of the winding operation and the quality of the film roll.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] The utility model discloses a winding steel pipe fixing device, which comprises a fixing cylinder fixedly connected at one end to the main shaft of a winding equipment and used for extending into the inside of a winding steel pipe at the other end, and a tensioning component arranged in the fixing cylinder; the tensioning component comprises a plurality of tensioning blocks distributed in the circumferential direction of the fixing cylinder, and each tensioning block can be translated in the radial direction of the fixing cylinder to abut against the inner wall of the winding steel pipe under the driving of a power source.
[0007] As a further improvement of the above-mentioned scheme, a first sliding groove corresponding in number to the tensioning blocks is formed at one end of the fixing cylinder, and each tensioning block is slidably connected in the corresponding first sliding groove through the first sliding block of the tensioning block; the tensioning component further comprises a conical block coaxially arranged in the inside of the fixing cylinder and movable in the axial direction, the slope surface of the conical block is in contact with each tensioning block, and a second sliding groove corresponding in number to the tensioning blocks is formed on the slope surface, and each tensioning block is slidably connected in the corresponding second sliding groove through the second sliding block of the tensioning block.
[0008] As a further improvement to the above solution, the power source is a cylinder, which is located inside the fixed cylinder, and the piston rod of the cylinder is coaxially and fixedly connected to the conical block.
[0009] As a further improvement to the above scheme, one end of the fixed cylinder that extends into the winding steel pipe is the insertion end, and the outer wall diameter of the insertion end matches the inner wall diameter of the winding steel pipe; the end of each tensioning block near the inner wall of the winding steel pipe is arc-shaped, and the diameter of the arc matches the inner wall diameter of the winding steel pipe.
[0010] As a further improvement to the above scheme, each tensioning block has anti-slip grooves at one end near the inner wall of the coiled steel pipe.
[0011] As a further improvement to the above solution, the device also includes a baffle fixed to the end of the fixed cylinder and capable of shielding the conical block, and the baffle is provided with multiple openings to prevent the tensioning block from moving.
[0012] As a further improvement to the above solution, the fixed cylinder and the main shaft are fixedly connected by a flange.
[0013] As a further improvement to the above scheme, one end of the fixed cylinder that extends into the winding steel pipe is the insertion end, and the outer diameter of the insertion end matches the inner diameter of the winding steel pipe.
[0014] As a further improvement to the above scheme, two fixing devices are provided, one at each end of the coiled steel pipe.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This utility model provides a tensioning component inside the fixed cylinder, which on the one hand provides basic support for the winding steel pipe, and on the other hand transforms the traditional axial compression fixing into radial compression fixing with adjustable slack, increasing the friction with the inner wall of the winding steel pipe to reduce slippage, thereby ensuring the reliability of the winding action and the quality of the film roll.
[0017] 2. This utility model sets a cylinder-driven conical block near the center of multiple tensioning blocks and uses a slider-operated structure. The axial movement of the conical block drives each tensioning block to make radial expansion movement, and the tensioning blocks provide tension force to the inner wall of the coiled steel pipe. This transmission method has good reliability and durability. On this basis, the end of the tensioning block is set to an arc shape that matches the inner wall of the coiled steel pipe, and anti-slip textures or anti-slip pads can be added to make the tensioning block and the inner wall of the coiled steel pipe achieve a more sufficient "surface contact" rather than the "line contact" between the frustum and the end of the coiled steel pipe in the traditional technology, thereby further increasing the restraining effect on the coiled steel pipe. Attached Figure Description
[0018] Figure 1 The schematic view of the axial extrusion type fixing of the traditional technology is that the inclined surface of the circular truncated cone directly extends into the end of the rolled steel pipe.
[0019] Figure 2 The schematic view of the three-dimensional structure of the rolled steel pipe installed on the main shaft through two fixing devices in the embodiment of the utility model.
[0020] Figure 3 The schematic view of the three-dimensional structure of the fixing device in the embodiment of the utility model. Figure 2
[0021] The schematic view of the three-dimensional structure of the fixing device in the embodiment of the utility model. Figure 4 Figure 3 The front view of the fixing cylinder in the embodiment of the utility model.
[0022] Figure 5 Figure 2 The side view of one of the expansion blocks in the embodiment of the utility model.
[0023] Figure 6 The schematic view of the three-dimensional structure of the four expansion blocks and the conical block cooperating through the sliding block structure in the embodiment of the utility model. Figure 2
[0024] The schematic view of the three-dimensional structure of the components in the embodiment of the utility model in another perspective. Figure 7 Figure 6 In the drawing: 1, main shaft; 2, rolled steel pipe; 3, fixing cylinder; 31, first sliding groove; 4, expansion assembly; 41, expansion block; 411, first sliding block; 412, second sliding block; 42, conical block; 421, inclined surface; 422, second sliding groove; 5, anti-skid pattern; 6, air cylinder; 61, piston rod; 7, baffle; 71, opening; 8, flange plate; 9, circular truncated cone. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.
[0026] Please refer to Fig. 1, the traditional technology usually adopts the inclined surface of the circular truncated cone 9 to directly extend into the end of the rolled steel pipe 2, so as to extrude and fix the rolled steel pipe 2, and the fixing mode is prone to slipping. In view of the above problem, the embodiment provides a rolled steel pipe fixing device.
[0027] Please refer to Fig. 1, the traditional technology usually adopts the inclined surface of the circular truncated cone 9 to directly extend into the end of the rolled steel pipe 2, so as to extrude and fix the rolled steel pipe 2, and the fixing mode is prone to slipping. In view of the above problem, the embodiment provides a rolled steel pipe fixing device. Figure 1 Please refer to Fig. 1, the traditional technology usually adopts the inclined surface of the circular truncated cone 9 to directly extend into the end of the rolled steel pipe 2, so as to extrude and fix the rolled steel pipe 2, and the fixing mode is prone to slipping. In view of the above problem, the embodiment provides a rolled steel pipe fixing device.
[0028] Figures 2 to 7 The fixing device is provided with two fixing devices respectively arranged at two ends of the rolled steel pipe 2. Each fixing device comprises a fixing cylinder 3, a tensioning assembly 4 and a baffle 7.
[0029] One end of the fixing cylinder 3 is fixedly connected to the main shaft 1 of the rolling device through a flange 8, and the other end is used for extending into the inside of the rolled steel pipe 2. In the embodiment, the end of the fixing cylinder 3 extending into the rolled steel pipe 2 is referred to as an extending end, and the diameter of the outer wall of the extending end matches the diameter of the inner wall of the rolled steel pipe 2, so that the extending end can provide preliminary support for the rolled steel pipe 2 when extending into the inside of the rolled steel pipe 2.
[0030] The end face of the extending end of the fixing cylinder 3 is provided with four first sliding grooves 31 distributed at equal intervals along the circumference.
[0031] The tensioning assembly 4 is arranged in the fixing cylinder 3, and the tensioning assembly 4 comprises four tensioning blocks 41 and a tapered block 42. The four tensioning blocks 41 correspond to the four first sliding grooves 31 one by one. Each tensioning block 41 can be driven by a power source to translate along the radial direction of the fixing cylinder 3 to abut against the inner wall of the rolled steel pipe 2. Specifically, each tensioning block 41 is slidably connected in the corresponding first sliding groove 31 through a first sliding block 411 of the tensioning block 41. In the embodiment, the tensioning block 41 can be provided with a through hole and / or a chamfer to reduce stress concentration and improve durability and safety.
[0032] The tapered block 42 is coaxially arranged in the fixing cylinder 3 and can move along the axial direction, and the inclined surface 421 of the tapered block 42 is in contact with each tensioning block 41, and the inclined surface 421 is provided with four second sliding grooves 422, and each tensioning block 41 is slidably connected in the corresponding second sliding groove 422 through a second sliding block 412 of the tensioning block 41.
[0033] In the embodiment, the power source is a pneumatic cylinder 6, the pneumatic cylinder 6 is arranged in the fixing cylinder 3, and the piston rod 61 of the pneumatic cylinder 6 is fixedly connected with the tapered block 42 coaxially. In some embodiments, the pneumatic cylinder 6 can be replaced by other linear actuators, such as a hydraulic cylinder, a linear motor, etc.
[0034] Therefore, each tensioning block 41 can be slidably connected with the fixing cylinder 3 and the tapered block 42 through the sliding block structure. When the piston rod 61 of the pneumatic cylinder 6 extends and retracts, the tapered block 42 is simultaneously driven to move along the axial direction, and the inclined surface 421 of the tapered block 42 acts on each tensioning block 41. Due to the sliding block structure, the axial movement of the tapered block 42 drives the four tensioning blocks 41 to move radially, and the tensioning blocks 41 provide tensioning force to the inner wall of the rolled steel pipe 2, thereby increasing the friction force received by the rolled steel pipe 2 and reducing the occurrence of slipping.
[0035] Each of the tensioning blocks 41 can be arc-shaped near an end close to the inner wall of the coiled steel pipe 2, and the diameter of the arc matches the diameter of the inner wall of the coiled steel pipe 2, so that the tensioning blocks 41 and the inner wall of the coiled steel pipe 2 can achieve more sufficient "surface contact", rather than the "line contact" between the traditional circular table 9 and the end of the coiled steel pipe 2, thereby further increasing the restraint on the coiled steel pipe 2. Each of the tensioning blocks 41 can also be provided with anti-skid lines 5 near an end close to the inner wall of the coiled steel pipe 2, and the extending direction of the lines 5 is perpendicular to the circumferential direction of the fixed cylinder 3, so as to increase the resistance. In some embodiments, the anti-skid lines 5 can also be replaced by anti-skid pads.
[0036] The baffle 7 can be fixed to the end of the fixed cylinder 3 by bolts, the baffle 7 can shield the conical blocks 42, and the baffle 7 is also provided with a plurality of openings 71 for avoiding the movement of the tensioning blocks 41, thereby playing a closed protection role on the internal structure of the fixing device.
[0037] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A coiled steel pipe fixing device, comprising a fixing cylinder (3) with one end fixedly connected to the main shaft (1) of a coiling device and the other end for extending into the inside of the coiled steel pipe (2), characterized in that, It also includes a tensioning assembly (4) disposed in the fixed cylinder (3); the tensioning assembly (4) includes a plurality of tensioning blocks (41) distributed circumferentially along the fixed cylinder (3), each tensioning block (41) being able to be radially translated along the fixed cylinder (3) by a power source to press against the inner wall of the coiled steel pipe (2).
2. The coiled steel pipe fixing device according to claim 1, characterized in that, One end of the fixed cylinder (3) is provided with a first groove (31) corresponding to the number of tensioning blocks (41). Each tensioning block (41) is slidably connected in the corresponding first groove (31) through its own first slider (411). The tensioning assembly (4) also includes a conical block (42) coaxially disposed inside the fixed cylinder (3) and capable of moving along the axial direction. The slope surface (421) of the conical block (42) contacts each tensioning block (41), and a second groove (422) corresponding to the number of tensioning blocks (41) is provided on the slope surface (421). Each tensioning block (41) is slidably connected in the corresponding second groove (422) through its own second slider (412).
3. The coiled steel pipe fixing device according to claim 2, characterized in that, The power source is a cylinder (6), which is located inside the fixed cylinder (3), and the piston rod (61) of the cylinder (6) is coaxially and fixedly connected to the conical block (42).
4. A coiled steel pipe fixing device according to claim 1, 2, or 3, characterized in that, The end of the fixed cylinder (3) that extends into the winding steel pipe (2) is the insertion end, and the outer wall diameter of the insertion end matches the inner wall diameter of the winding steel pipe (2); the end of each tensioning block (41) near the inner wall of the winding steel pipe (2) is arc-shaped, and the diameter of the arc matches the inner wall diameter of the winding steel pipe (2).
5. A coiled steel pipe fixing device according to claim 4, characterized in that, Each tensioning block (41) has anti-slip texture (5) at one end near the inner wall of the coiled steel pipe (2).
6. A coiled steel pipe fixing device according to claim 2, characterized in that, It also includes a baffle (7) fixed to the end of the fixed cylinder (3) and capable of shielding the conical block (42). The baffle (7) also has multiple openings (71) for avoiding the movement of the tensioning block (41).
7. A coiled steel pipe fixing device according to claim 1, 2, 3, or 6, characterized in that, The fixed cylinder (3) is fixedly connected to the main shaft (1) by a flange (8).
8. A coiled steel pipe fixing device according to claim 7, characterized in that, The fixing device is provided in two places, respectively set at both ends of the coiled steel pipe (2).