Heat shrinkage film winding and fixing tool and winding method
By using permanent magnet brakes and swing arm potentiometers in the heat shrink film winding fixing tooling, the heat shrink film compression device effectively fixes and tightens the end of the heat shrink film, the tension changes and bubble problems caused by the change in the diameter of the heat shrink film roll are solved, and the product surface quality and dimensional accuracy are improved.
Patent Information
- Application Number
- CN202510157225.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-05-16
AI Technical Summary
During the winding process of heat shrink film, the change in the diameter of the heat shrink film roll leads to a change in tension, resulting in excessive product diameter and the head end of the heat shrink film cannot be effectively fixed, resulting in the inability to discharge bubbles in the resin, affecting the appearance quality.
It provides a heat shrink film winding fixing tool, including a permanent magnet brake and a swing arm potentiometer, adjusts torque in real time through a belt transmission device, maintains constant tension, and effectively fixes and compresses the end of the heat shrink film through a heat shrink film compression device to discharge air bubbles.
It achieves constant tension during the winding process of heat shrink film, ensures product surface quality and dimensional accuracy, avoids bubble problems, and improves product appearance and dimensional consistency.
Smart Images
Figure CN120003003A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of hydrogen storage bottle preparation, and in particular to a heat shrink film winding fixing tool and a winding method. Background Art
[0002] At present, composite products (such as hydrogen storage bottles) formed by the winding process are usually wrapped with a layer of heat shrink film after the fiber winding is completed. This layer of heat shrink film can provide a smooth and uniform outer surface for the composite product and improve the appearance quality of the product. During the heat shrink film winding process, a simple magnetic powder brake is usually provided to control the heat shrink film winding tension, but this type of device can only provide constant tension, and the diameter of the heat shrink film roll continues to decrease as it is wound and unwound, resulting in changes in tension during the winding process, causing the product diameter to exceed the tolerance. In addition, the head end of the heat shrink film cannot be effectively fixed, resulting in the inability to discharge bubbles in the resin at the starting end. After curing, bubbles are obvious on the surface of the product, affecting the appearance quality. Summary of the invention
[0003] In view of this, the present invention provides a heat shrink film winding fixing tool and a winding method. On the one hand, during the heat shrink film winding process, the torque can be adjusted in real time as the diameter of the heat shrink film roll changes to ensure constant tension of the heat shrink film during the winding process. On the other hand, the end of the heat shrink film can be effectively fixed and pressed, and bubbles in the resin can be effectively discharged, thereby ensuring the apparent quality and dimensional accuracy of the product.
[0004] In a first aspect, a heat shrink film winding and fixing tool is provided, comprising: The mounting seat provides installation space for all other components on the heat shrink film winding fixture, and is used to connect other components or equipment, such as a winding machine; specifically, the mounting seat includes a first mounting plate and a second mounting plate; the first mounting plate is used to be installed and connected to the winding machine; a permanent magnet brake and a heat shrink film fixing device are arranged on one side of the second mounting plate, and a belt transmission device is arranged on the other side; the permanent magnet brake includes a permanent magnet brake body and a swing arm potentiometer; the belt transmission device includes a driving wheel, a driven wheel, and a belt, the driving wheel is coaxially connected to the heat shrink film fixing device, the driven wheel is coaxially connected to the permanent magnet brake, and the belt connects the driving wheel and the driven wheel; the swing arm potentiometer includes a fixed end and a rotating shaft arm, the fixed end is connected to the brake body, and the rotating shaft arm can rotate circumferentially around the brake body.
[0005] In another embodiment, the permanent magnet brake body includes a rotating center disk, a multi-stage magnet, a mounting shaft, a torque adjustment ring, a precision ball bearing, an annular sliding rheostat, a mounting disk, and a shell; the multi-stage magnet includes a first magnet and a second magnet; the mounting shaft is arranged on a second mounting plate, and the mounting disk, the precision ball bearing, the first magnet, the rotating center disk, and the second magnet are sequentially sleeved on the mounting shaft; the mounting disk is also connected and fixed to the second mounting plate by bolts; the torque adjustment ring is connected to the second magnet; the annular sliding rheostat is arranged on the inner side of the torque adjustment ring; the swing arm potentiometer is arranged between the second magnet and the annular sliding rheostat, and its fixed end is connected to the annular sliding rheostat.
[0006] In another embodiment, the heat shrink film fixing device includes a fixing ring, a bearing, and an installation shaft; the installation shaft is arranged on a second installation plate; the bearing cooperates with the installation shaft; the fixing ring is arranged on the outside of the bearing and is connected and fixed to the second installation plate; a limiting structure is also arranged at the end of the installation shaft.
[0007] In another embodiment, the heat shrink film winding and fixing tooling also includes a heat shrink film pressing device, which includes a first mounting shaft; one end of the first mounting shaft is fixed in a waist-shaped hole of the second mounting plate, and a first connecting arm and a second connecting arm are spaced apart on the other end; the other end of the first connecting arm and the second connecting arm away from the first mounting shaft is connected to the second mounting shaft; the second mounting shaft is connected to the third mounting shaft; the third mounting shaft is connected to the first telescopic arm and the second telescopic arm; the other ends of the first telescopic arm and the second telescopic arm are connected to a screw rod, which is threaded with the screw rod, and the threaded cooperation direction of the first telescopic arm and the second telescopic arm is opposite to that of the screw rod; a pressing wheel is arranged on the screw between the first telescopic arm and the second telescopic arm.
[0008] In another embodiment, a heat shrink film guide wheel is further provided on the second mounting plate, specifically located between the heat shrink film fixing device and the product.
[0009] In a second aspect, the present invention further provides a heat shrink film winding method, based on the heat shrink film winding fixing device, comprising the following steps: Step 1: Calculate the initial torque T of the heat shrink film in the initial state according to the required winding tension. The calculation formula is T=F×R, where F is the required winding tension and R is the initial radius of the heat shrink film roll; Step 2: according to the initial torque calculated in step 1, set the initial position of the swing arm potentiometer and the initial torque of the permanent magnet brake; Step 3: Pull out the end of the heat shrink film, pass it through the guide wheel, and then use the heat shrink film clamping device to fix the end of the heat shrink film on the surface of the product and start winding.
[0010] Beneficial effects: Through the permanent magnet brake combined with the swing arm potentiometer, the torque can be adjusted in real time according to the change in the diameter of the heat shrink film roll when the heat shrink film is unwound, thereby ensuring the constant tension of the heat shrink film during the winding process, so that the surface quality of the product is stable and the product diameter accuracy is high; in addition, a heat shrink film clamping device is also provided. Through the waist-shaped hole and the telescopic arm setting, the overall front and rear position adjustment of the heat shrink film clamping device and the clamping force applied by the clamping wheel to the heat shrink film can be facilitated, so as to fix and clamp the heat shrink film, which is beneficial to the discharge of bubbles during the heat shrink film winding process. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Attached Figure 1 Schematic diagram of the heat shrink film wrapping fixture structure Figure 1 ; Attached Figure 2 Schematic diagram of the heat shrink film wrapping fixture structure Figure 2 ; Attached Figure 3 Schematic diagram of the heat shrink film wrapping fixture structure Figure 3 ; Attached Figure 4 is a cross-sectional schematic diagram of a permanent magnet brake; Attached Figure 5 This is a schematic diagram of the working principle of the permanent magnet brake; Attached Figure 6 Schematic diagram of the structure of the heat shrink film fixing device; Wherein: 1-mounting seat; 11-first mounting plate; 12-second mounting plate; 2-permanent magnetic brake; 21-permanent magnetic brake body; 211-rotating center disk; 212-first magnet; 213-second magnet; 214-mounting shaft; 215-torque adjustment ring; 216-precision ball bearing; 217-annular sliding rheostat; 218-mounting disk; 219-housing; 22-swing arm potentiometer; 221-fixed end; 222-rotating shaft arm; 3-heat shrink film fixing device, 31-fixing ring; 32-bearing; 33-mounting shaft; 34-circular nut; 4-belt transmission device; 41-driving wheel; 42-driven wheel; 43-belt; 5-heat shrink film pressing device; 51-first mounting shaft; 52-first connecting arm; 53-second connecting arm; 54-second mounting shaft; 55-third mounting shaft; 56-first telescopic arm; 57-second telescopic arm; 58-screw; 59 pressing wheel; 6-heat shrink film roll; 7-product, 8-heat shrink film guide wheel. DETAILED DESCRIPTION
[0012] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.
[0013] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0014] In the description of the present invention, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances. Example 1
[0015] This embodiment provides a heat shrink film winding and fixing tool.
[0016] As attached Figure 1-6 As shown, a heat shrink film winding fixture includes a mounting base 1, which provides mounting space for all other components on the heat shrink film winding fixture and is used to connect with a winding machine; the mounting base 1 includes a first mounting plate 11 and a second mounting plate 12; the first mounting plate 11 provides mounting space for all other components on the heat shrink film winding fixture; the second mounting plate 12 is used to connect other components, such as connecting to a winding machine.
[0017] A permanent magnet brake 2 and a heat shrink film fixing device 3 are arranged on one side of the second mounting plate 12, and a belt transmission device 4 is arranged on the other side; the permanent magnet brake 2 includes a permanent magnet brake body 21 and a swing arm potentiometer 22; the belt transmission device 4 includes a driving wheel 41, a driven wheel 42, and a belt 43, the driving wheel 41 is coaxially connected to the heat shrink film fixing device 3, the driven wheel 42 is coaxially connected to the permanent magnet brake body 21, and the belt 43 connects the driving wheel 41 and the driven wheel 42; the swing arm potentiometer 22 includes a fixed end 221 and a rotating shaft arm 222, the fixed end 221 is connected to the permanent magnet brake body 21, and the rotating shaft arm 222 can rotate circumferentially around the brake body 21.
[0018] The permanent magnet brake body 21 includes a rotating center disk 211, a multi-stage magnet, a mounting shaft 214, a torque adjustment ring 215, a precision ball bearing 216, an annular sliding rheostat 217, a mounting disk 218, and a housing 219; the multi-stage magnet includes a first magnet 212 and a second magnet 213; the mounting shaft 214 is arranged on the second mounting plate 12, and the mounting disk 218, the precision ball bearing 216, the first magnet 212, the rotating center disk 211, and the second magnet 213 are sequentially sleeved on the mounting shaft 214; the mounting disk 218 is also connected and fixed to the second mounting plate 12 by bolts; the torque adjustment ring 215 is connected and arranged with the second magnet 213; the annular sliding rheostat 217 is arranged on the inner side of the torque adjustment ring 215; the swing arm potentiometer 22 is arranged between the second magnet 213 and the annular sliding rheostat 217, and its fixed end 221 is connected to the annular sliding rheostat 217. When the permanent magnetic brake 2 is working, the rotating shaft arm 222 of the swing arm potentiometer 22 rests on the heat shrink film roll 6. Figure 5 As shown, as the heat shrink film is unwound, the angle of the rotating shaft arm changes, causing the position of the fixed end on the annular sliding rheostat 217 to change continuously, moving in the direction of CBA. Different positions correspond to different resistances. When the resistance changes, the voltage and current also change, causing the magnetic field strength to change accordingly, and the torque also changes accordingly, thereby achieving the effect of constant tension of the heat shrink film.
[0019] The heat shrink film fixing device 3 includes a fixing ring 31, a bearing 32, and a mounting shaft 33; the mounting shaft 33 is arranged on the second mounting plate 12; the bearing 33 cooperates with the mounting shaft 33; the fixing ring 31 is arranged on the outside of the bearing 33 and is connected and fixed to the second mounting plate 12; a limiting structure is also arranged at the end of the mounting shaft 33, specifically a circular nut 34.
[0020] The heat shrink film winding and fixing tooling also includes a heat shrink film pressing device 5, which includes a first mounting shaft 51; one end of the first mounting shaft 51 is fixed in a waist-shaped hole of the second mounting plate 12, and a first connecting arm 52 and a second connecting arm 53 are spaced apart on the other end; the other end of the first connecting arm 52 and the second connecting arm 53 away from the first mounting shaft 51 is connected to the second mounting shaft 54; the second mounting shaft 54 is connected to the third mounting shaft 55; the third mounting shaft 55 is connected to the first telescopic arm 56 and the second telescopic arm 57; the other ends of the first telescopic arm 56 and the second telescopic arm 57 are connected to the screw 58, which are threadedly matched with the screw 58, and the first telescopic arm 56 and the second telescopic arm 57 are in opposite directions to the threaded matching of the screw; a clamping wheel 59 is provided on the screw 58 between the first telescopic arm 56 and the second telescopic arm 57. In this structure, the contact angle between the pressure wheel 59 and the product can be adjusted by adjusting the position of the first mounting shaft in the waist-shaped hole, and by rotating the screw, the first telescopic arm 56 and the second telescopic arm 57 can move relative to or oppositely with the rotation of the screw, thereby adjusting the pressure of the pressure wheel 59 on the product.
[0021] The heat shrink film winding and fixing tool also includes a heat shrink film guide wheel 8 arranged on the second mounting plate 12, specifically arranged between the heat shrink film fixing device 3 and the product 7. Example 2
[0022] This embodiment provides a heat shrink film winding method, based on the heat shrink film winding fixing tool described in Embodiment 1, comprising the following steps: Step 1: Calculate the initial torque of the heat shrink film in the initial state according to the required winding tension, and the calculation formula is T=F×R, where F is the winding tension and R is the initial radius of the heat shrink film roll; Step 2: according to the initial torque calculated in step 1, set the initial position of the swing arm potentiometer and the initial torque of the permanent magnet brake; Step 3: Pull out the end of the heat shrink film, pass it through the guide wheel, and then use the heat shrink film clamping device to fix the end of the heat shrink film on the surface of the product and start winding.
[0023] The above is only a specific embodiment of the present invention, and the present invention is described in detail. The unexplained part is a conventional technology. However, the protection scope of the present invention is not limited to this. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. The protection scope of the present invention shall be based on the protection scope of the claims.
Claims
1. A heat shrink film winding and fixing tool, comprising a mounting seat; the mounting seat comprises a first mounting plate and a second mounting plate, characterized in that: The first mounting plate is used for installation and connection with the winding machine; a permanent magnet brake and a heat shrink film fixing device are arranged on one side of the second mounting plate, and a belt transmission device is arranged on the other side; the permanent magnet brake comprises a permanent magnet brake body and a swing arm potentiometer; the belt transmission device comprises a driving wheel, a driven wheel, and a belt, the driving wheel is coaxially connected to the heat shrink film fixing device, the driven wheel is coaxially connected to the permanent magnet brake, and the belt connects the driving wheel and the driven wheel; the swing arm potentiometer comprises a fixed end and a rotating shaft arm, the fixed end is connected to the permanent magnet brake body, and the rotating shaft arm can rotate circumferentially around the brake body.
2. The heat shrink film winding and fixing tool according to claim 1, characterized in that: The permanent magnet brake body includes a rotating center disk, a multi-stage magnet, a mounting shaft, a torque adjustment ring, a precision ball bearing, an annular sliding rheostat, a mounting disk, and a shell; the multi-stage magnet includes a first magnet and a second magnet; the mounting shaft is arranged on a second mounting plate, and the mounting disk, the precision ball bearing, the first magnet, the rotating center disk, and the second magnet are sequentially sleeved on the mounting shaft; the mounting disk is also connected and fixed to the second mounting plate by bolts; the torque adjustment ring is connected and arranged with the second magnet; the annular sliding rheostat is arranged on the inner side of the torque adjustment ring; the swing arm potentiometer is arranged between the second magnet and the annular sliding rheostat, and its fixed end is connected to the annular sliding rheostat.
3. The heat shrink film winding and fixing tool according to claim 1, characterized in that: The heat shrink film fixing device includes a fixing ring, a bearing, and a mounting shaft; the mounting shaft is arranged on a second mounting plate; the bearing cooperates with the mounting shaft; the fixing ring is sleeved on the outer periphery of the bearing and is connected and fixed to the second mounting plate; a limiting structure is also arranged at the end of the mounting shaft.
4. The heat shrink film fixing tool according to claim 1, characterized in that: It also includes a heat shrink film pressing device, which includes a first mounting shaft; one end of the first mounting shaft is fixed in a waist-shaped hole of the second mounting plate, and a first connecting arm and a second connecting arm are spaced apart on the other end; the other ends of the first connecting arm and the second connecting arm away from the first mounting shaft are connected to the second mounting shaft; a third mounting shaft is arranged on the second mounting shaft; a first telescopic arm and a second telescopic arm are arranged on the third mounting shaft; the other ends of the first telescopic arm and the second telescopic arm are connected to a screw rod, which is threadedly matched with the screw rod, and the threaded matching directions of the first telescopic arm and the second telescopic arm and the screw rod are opposite; a pressing wheel is arranged on the screw rod between the first telescopic arm and the second telescopic arm.
5. The heat shrink film winding and fixing tool according to claim 1, characterized in that: Also included is a shrink film guide wheel.
6. A heat shrink film winding method, based on the heat shrink film winding fixture according to any one of claims 1 to 5, characterized in that: include: Step 1: Calculate the initial torque T of the heat shrink film in the initial state according to the required winding tension. The calculation formula is T=F×R, where F is the required winding tension and R is the radius of the heat shrink film roll in the initial state; Step 2: according to the initial torque calculated in step 1, set the initial position of the swing arm potentiometer and the initial torque of the permanent magnet brake; Step 3: Pull out the end of the heat shrink film, pass it through the guide wheel, and then use the heat shrink film clamping device to fix the end of the heat shrink film on the surface of the product and start winding.