Film tightening structure for plastic film winding equipment
By designing an adjustment structure for the adjusting roller and position block in the film winding equipment, the problem of insufficient tension during the winding process was solved, and a tight winding effect was achieved.
Patent Information
- Application Number
- CN202520364692.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-04
AI Technical Summary
If no tension is applied when winding plastic film, existing film winding machines are prone to wrinkles and loosening, which affects the winding effect and appearance.
A film tensioning structure for a plastic film winding device has been designed, including a base, an adjusting roller, a position block, a through groove, and an adjustment structure. The tension is adjusted by adjusting the height of the adjusting roller to ensure that the film is taut during the winding process.
It effectively avoids wrinkles and loosening during the winding process, ensuring the appearance and performance of the film roll after winding.
Smart Images
Figure CN223779609U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of plastic film winding technology, and in particular relates to a film tensioning structure for plastic film winding equipment. Background Technology
[0002] Plastic film is a thin, continuous polymer material, including polypropylene film, such as transparent packaging bags for clothing, transparent packaging bags for food, and color-printed composite films, and polyvinyl chloride film, such as self-adhesive film, cling film, document bags, and plastic printed tablecloths. During processing, plastic film is typically rolled into a roll or reel of a certain diameter, used for packaging, handling, and storage. A film winding machine is a frequently used piece of plastic film winding equipment. It directly winds the finished film onto a winding chuck and continuously winds it by rotating the chuck. Plastic film winding equipment can operate continuously, reducing manual intervention and waiting time, thereby improving overall production efficiency.
[0003] The problem with existing technology is that if a certain tension is not applied to the plastic film when the film winding machine winds it up, wrinkles and loosening may occur during the winding process, affecting the appearance and use of the finished film roll and reducing the effect of plastic film winding. Utility Model Content
[0004] To address the problems existing in the prior art, this utility model provides a film tensioning structure for a plastic film winding device. It has the advantage of adjusting the height of the plastic film being wound, ensuring that the wound film remains taut. This solves the problem that if a certain tension is not applied to the plastic film during the winding process, wrinkles and loosening may occur, affecting the appearance and use of the finished film roll and reducing the effectiveness of plastic film winding.
[0005] This utility model is implemented as follows: a film tensioning structure for a plastic film winding device includes a base, adjusting rollers, a position block, a passage groove, and an adjustment structure. A main body is fixedly connected to the top left side of the base. A control panel is provided on the front of the main body. A winding roller is rotatably connected to the right side of the main body. A sliding groove is formed on the right side of the main body. Two adjusting rollers are arranged vertically on the right side of the main body. The left ends of the two adjusting rollers are rotatably connected to a sliding block via bearings. The sliding block is slidably connected to the inner wall of the sliding groove. The right ends of the two adjusting rollers are rotatably connected to a position block via bearings. A support arm is fixedly connected to the top right side of the main body. A position groove is formed on the left side of the support arm. The outer surface of the position block is slidably connected to the inner wall of the position groove. Several stop grooves are equidistantly formed on the front and rear sides of the inner wall of the position groove. Openings are formed on the front and rear sides of the position block. A passage groove is provided on the inner wall of the position block. A position rod is fixedly connected to the front and rear sides of the inner wall of the passage groove. An adjustment structure is provided on the inner wall of the passage groove.
[0006] In a preferred embodiment of this invention, the adjustment structure includes a linear sliding bar, which is disposed on the top of the position block. The bottom of the linear sliding bar extends and penetrates the inner wall of the passage groove. A pulling member is fixedly connected to the top of the linear sliding bar, and a linear sliding arm is fixedly connected to the bottom of the linear sliding bar. By setting the linear sliding bar, when the pulling member is pulled upward, it can drive the linear sliding bar to slide upward on the surface of the top of the position block. The sliding linear sliding bar simultaneously drives the linear sliding arm to move.
[0007] In a preferred embodiment of this invention, the straight-moving arm is disposed on the inner wall of the passage groove. The top of the straight-moving arm is fixedly connected to the bottom of the straight-moving bar. Straight-moving rods are fixedly connected to the front and rear ends of the straight-moving arm away from the left side. Force-bearing arms are respectively sleeved on the outer surfaces of the two straight-moving rods. By setting the straight-moving arm, the straight-moving arm can be driven by the straight-moving bar to move upward in the passage groove, thereby driving the movement of the two straight-moving rods. In this way, the two moving straight-moving rods respectively drive the rotation of the two force-bearing arms.
[0008] In a preferred embodiment of this invention, the two force-bearing arms are respectively positioned front to back on the inner wall of the passage groove, and are staggered left to right. Force grooves are formed on the surfaces of the two force-bearing arms at their closest points to each other. The inner walls of the two force grooves are respectively in contact with the outer surfaces of the two linear rods. Rotating arms are fixedly connected to the ends of the two force-bearing arms that are furthest from each other. By setting the force-bearing arms, the two linear rods move upwards while simultaneously pressing against the inner walls of the two force grooves, causing the two force-bearing arms to rotate relative to each other in a staggered manner. In turn, the two force-bearing arms drive the two rotating arms to rotate synchronously.
[0009] In a preferred embodiment of this invention, the upper ends of the two rotating arms are rotatably connected to the left and right sides of the inner wall of the groove via rotating shafts, and the lower ends of the two rotating arms are respectively provided with notches. Positioning arms are respectively provided on the side of the bottom of the two rotating arms that are close to each other. By providing rotating arms, the two rotating arms can be offset from the position rods through the notches during rotation and push the two positioning arms respectively, thereby driving the two positioning arms to move closer together.
[0010] In a preferred embodiment of this invention, the two positioning arms are slidably connected to the outer surface of the positioning rod at their midpoints. A positioning spring is fixedly connected to the side of the two positioning arms that are close to each other. The positioning spring is sleeved on the outer surface of the positioning rod. A positioning block is fixedly connected to the bottom of each of the two positioning arms. By setting the positioning arms, the two positioning arms are pushed by the rotating arm and slide close to each other on the surface of the positioning rod, compressing the positioning spring. The sliding of the two positioning arms then drives the two positioning blocks to move closer to each other.
[0011] In a preferred embodiment of this invention, the two positioning blocks are respectively fixedly connected to the bottom of the positioning arm on opposite sides. The opposite ends of the two positioning blocks extend through openings into the inner wall of the passage groove. The opposite ends of the two positioning blocks are respectively inserted into the inner wall of the stop groove. By setting the positioning blocks, when the two positioning blocks move closer together, they can disengage from the stop groove and retract into the passage groove, thereby releasing the fixing of the position blocks. In this way, the position blocks can slide up and down in the position groove to drive the two adjusting rollers to adjust the height.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. This utility model, by setting a base, adjusting roller, position block, through groove and adjustment structure, achieves the solution to the problem that when a film winding machine winds up plastic film, if a certain tension is not applied, wrinkles and loosening may occur during the winding process, affecting the appearance and use of the finished film roll and reducing the winding effect of plastic film.
[0014] 2. This utility model, by setting adjustment rollers and position blocks, enables the through groove and adjustment structure to work together. The position blocks slide up and down in the position groove to drive the two adjustment rollers to adjust their height. This allows the two adjustment rollers to adjust different heights, applying a certain tension to the rolled plastic film. This works in conjunction with the take-up roller to roll up the plastic film and keep the surface of the rolled plastic film taut, ensuring stability during the winding process and guaranteeing the winding effect of the plastic film. Attached Figure Description
[0015] Figure 1This is a three-dimensional structural diagram of the base provided in an embodiment of the present utility model;
[0016] Figure 2 This is a schematic diagram of the separated structure of the main body, adjusting roller and support arm provided in an embodiment of the present utility model;
[0017] Figure 3 This utility model provides a structural schematic diagram of the adjusting roller and the support arm, as well as a cross-sectional view of the position block.
[0018] Figure 4 This is an exploded structural diagram of the position lever and adjustment structure provided in an embodiment of the present invention.
[0019] In the diagram: 1. Base; 101. Main body; 102. Control panel; 103. Take-up roller; 104. Sliding groove; 2. Adjusting roller; 201. Sliding block; 3. Position block; 301. Opening; 4. Through groove; 401. Position rod; 5. Adjustment structure; 6. Support arm; 7. Position groove; 701. Stop groove; 8. Straight-line bar; 9. Pulling component; 10. Straight-line arm; 11. Straight-line rod; 12. Force arm; 13. Force groove; 14. Rotating arm; 15. Notch; 16. Positioning arm; 17. Positioning spring; 18. Positioning block. Detailed Implementation
[0020] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.
[0021] The structure of this utility model will now be described in detail with reference to the accompanying drawings.
[0022] like Figures 1 to 4As shown in the figure, the film tensioning structure for a plastic film winding device provided in this embodiment of the utility model includes a base 1, adjusting rollers 2, position blocks 3, a through groove 4, and an adjusting structure 5. A main body 101 is fixedly connected to the left side of the top of the base 1. A control panel 102 is provided on the front of the main body 101. A winding roller 103 is rotatably connected to the right side of the main body 101. A sliding groove 104 is provided on the right side of the main body 101. Two adjusting rollers 2 are provided on the right side of the main body 101, positioned vertically. A sliding block 201 is rotatably connected to the left end of each adjusting roller 2 via a bearing. 1. The two adjusting rollers 2 are slidably connected to the inner wall of the sliding groove 104. The right ends of the two adjusting rollers 2 are rotatably connected to the position block 3 via bearings. The right side of the top of the main body 101 is fixedly connected to the support arm 6. The left side of the support arm 6 is provided with a position groove 7. The outer surface of the position block 3 is slidably connected to the inner wall of the position groove 7. Several stop grooves 701 are equidistantly provided on the front and rear sides of the inner wall of the position groove 7. Openings 301 are provided on the front and rear sides of the position block 3. The inner wall of the position block 3 is provided with a through groove 4. The front and rear sides of the inner wall of the through groove 4 are fixedly connected to the position rod 401. The inner wall of the through groove 4 is provided with an adjustment structure 5.
[0023] refer to Figure 2 and Figure 4 The adjustment structure 5 includes a linear guide bar 8, which is located on the top of the position block 3. The bottom of the linear guide bar 8 extends through the inner wall of the through groove 4. A pull member 9 is fixedly connected to the top of the linear guide bar 8, and a linear guide arm 10 is fixedly connected to the bottom of the linear guide bar 8.
[0024] The above solution is adopted: by setting the linear guide bar 8, when the puller 9 is pulled upward, it can drive the linear guide bar 8 to slide upward on the top surface of the position block 3, and the sliding linear guide bar 8 simultaneously drives the linear guide arm 10 to move.
[0025] refer to Figure 4 The straight-moving arm 10 is disposed on the inner wall of the through groove 4. The top of the straight-moving arm 10 is fixedly connected to the bottom of the straight-moving bar 8. The front and rear ends of the straight-moving arm 10 away from the left side are respectively fixedly connected to the straight-moving rods 11. The outer surfaces of the two straight-moving rods 11 are respectively sleeved with force-bearing arms 12.
[0026] The above scheme is adopted: by setting a linear moving arm 10, the linear moving arm 10 can be driven by the linear moving bar 8 to move upward in the through groove 4, and at the same time drive the two linear moving rods 11 to move. In this way, the two moving linear moving rods 11 respectively drive the rotation of the two force arms 12.
[0027] refer to Figure 4Two force-bearing arms 12 are respectively positioned front and rear on the inner wall of the through groove 4. The two force-bearing arms 12 are staggered left and right. Force grooves 13 are respectively opened on the surface of the two force-bearing arms 12 that are close to each other. The inner walls of the two force grooves 13 are respectively attached to the outer surfaces of the two straight moving rods 11. Rotating arms 14 are respectively fixedly connected to the ends of the two force-bearing arms 12 that are far apart from each other.
[0028] The above scheme is adopted: by setting the force arm 12, the two linear rods 11 move upward and squeeze the inner wall of the two force grooves 13 at the same time, which drives the two force arms 12 to rotate in a staggered manner, and then the two force arms 12 drive the two rotating arms 14 to rotate synchronously.
[0029] refer to Figure 4 The upper ends of the two rotating arms 14 are rotatably connected to the left and right sides of the inner wall of the groove 4 via rotating shafts, and the lower ends of the two rotating arms 14 are respectively provided with notches 15, and positioning arms 16 are respectively provided on the side of the bottom of the two rotating arms 14 that are close to each other.
[0030] The above solution is adopted: by setting up rotating arms 14, the two rotating arms 14 are respectively offset from the position rods 401 through notches 15 during rotation, and respectively push the two positioning arms 16, thereby driving the two positioning arms 16 to move closer together.
[0031] refer to Figure 4 The two positioning arms 16 are slidably connected to the outer surface of the position rod 401 in the middle. A positioning spring 17 is fixedly connected to the side of the two positioning arms 16 that are close to each other. The positioning spring 17 is sleeved on the outer surface of the position rod 401. A positioning block 18 is fixedly connected to the bottom of the two positioning arms 16 respectively.
[0032] The above scheme is adopted: by setting positioning arms 16, the two positioning arms 16 are pushed by rotating arms 14 respectively, slide close to each other on the surface of position rod 401, and compress the positioning spring 17. The two positioning arms 16 slide and then drive the two positioning blocks 18 to move closer to each other.
[0033] refer to Figure 3 and Figure 4 Two positioning blocks 18 are fixedly connected to the bottom of the positioning arm 16 on opposite sides. The opposite ends of the two positioning blocks 18 extend through the opening 301 and pass through the inner wall of the groove 4. The opposite ends of the two positioning blocks 18 are inserted into the inner wall of the stop groove 701.
[0034] The above solution is adopted: by setting positioning blocks 18, when the two positioning blocks 18 move close together, they can be disengaged from the stop groove 701 and retracted into the passage groove 4 to release the fixation of the position block 3. In this way, the position block 3 can slide up and down in the position groove 7 to drive the two adjusting rollers 2 to adjust the height.
[0035] The working principle of this utility model:
[0036] In use, first fix the roll used for winding onto the winding roller 103, then pass one end of the plastic film to be wound through the middle of the two adjusting rollers 2, and then fix it onto the roll. Start the winding roller 103 through the control panel 102 so that it can rotate with the roll to wind up the plastic film. During the process of the plastic film being wound by the two adjusting rollers 2, the pulling member 9 can be pulled upward to make the linear guide bar 8 slide upward on the surface of the top of the position block 3, and drive the linear guide arm 10 to move in the through groove 4, and simultaneously drive the two linear guide rods 11 to move. The two linear guide rods 11 move upward and squeeze the two force grooves 13, thereby driving the two force arms 12 to rotate relative to each other in a staggered manner, and driving the two rotating arms 14 to rotate synchronously. During the rotation of the two rotating arms 14, they are staggered from the position rod 401 through the notch 15 and then... Do not push the two positioning arms 16 to slide closer on the position rod 401. While compressing the positioning spring 17, the two positioning blocks 18 are driven to disengage from the stop groove 701 and retract into the through groove 4 to release the fixation of the position block 3. In this way, the position block 3 can slide up and down in the position groove 7. In conjunction with the sliding block 201 sliding in the sliding groove 104, the two adjusting rollers 2 are moved to adjust the distance between the wound plastic film and the take-up roller 103, ensuring that the wound plastic film can remain taut. Finally, release the pull member 9, so that the positioning spring 17 pushes the two positioning arms 16 to slide, driving the two positioning blocks 18 to move and insert into the stop groove 701 respectively to fix and limit the position block 3. In this way, the sliding block 201 and the two adjusting rollers 2 are fixed at the adjusted height, and the take-up roller 103 is used to wind up the plastic film.
[0037] It should be noted that the control panel 102 and the take-up roller 103 are existing devices or equipment in the prior art, or are devices or equipment that can be implemented by the prior art. The specific composition and principle of the power supply of the control panel 102 and the take-up roller 103 are clear to those skilled in the art, so they will not be described in detail here.
[0038] In summary, this plastic film winding equipment uses a film tensioning structure. Through the coordinated operation of the base 1, adjusting roller 2, position block 3, through groove 4, and adjusting structure 5, it solves the problem that if a certain tension is not applied to the plastic film during winding, wrinkles and loosening may occur, affecting the appearance and use of the finished film roll and reducing the winding effect of the plastic film.
[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A film tensioning structure for plastic film winding equipment, comprising a base (1), an adjusting roller (2), a position block (3), a through slot (4) and an adjusting structure (5), characterized in that: The left side of the top of the base (1) is fixedly connected with a main body (101), the front surface of the main body (101) is provided with a control panel (102), the right side of the main body (101) is rotatably connected with a winding roller (103), the right side of the main body (101) is provided with a sliding groove (104), the right side of the main body (101) is provided with two adjusting rollers (2), the two adjusting rollers (2) are arranged above and below respectively, the left ends of the two adjusting rollers (2) are rotatably connected with sliding blocks (201) through bearings, the sliding blocks (201) are slidably connected to the inner walls of the sliding grooves (104), the right ends of the two adjusting rollers (2) are rotatably connected with position blocks (3) through bearings, the right side of the top of the main body (101) is fixedly connected with a supporting arm (6), the left side of the supporting arm (6) is provided with a position groove (7), the outer surfaces of the position blocks (3) are slidably connected to the inner walls of the position grooves (7), a plurality of stop grooves (701) are equidistantly formed on the front and rear sides of the inner walls of the position grooves (7), the front and rear sides of the position blocks (3) are provided with openings (301), the inner walls of the position blocks (3) are provided with through grooves (4), the front and rear sides of the inner walls of the through grooves (4) are fixedly connected with position rods (401), and the inner walls of the through grooves (4) are provided with adjusting structures (5).
2. The film tensioning structure for a plastic film winding apparatus according to claim 1, characterized in that: The adjusting structure (5) comprises a straight moving strip (8), the straight moving strip (8) is arranged on the top of the position block (3), the bottom of the straight moving strip (8) extends and penetrates through the inner wall of the through groove (4), the top of the straight moving strip (8) is fixedly connected with a pulling piece (9), and the bottom of the straight moving strip (8) is fixedly connected with a straight moving arm (10).
3. The film tensioning structure for a plastic film winding apparatus according to claim 2, wherein: The straight moving arm (10) is arranged on the inner wall of the through groove (4), the top of the straight moving arm (10) is fixedly connected with the bottom of the straight moving strip (8), the front and rear ends of the straight moving arm (10) away from the left side are fixedly connected with straight moving rods (11) respectively, and the outer surfaces of the two straight moving rods (11) are respectively sleeved with stress arms (12).
4. The film tensioning structure for a plastic film winding apparatus according to claim 3, wherein: The front and rear ends of the two stress arms (12) are respectively arranged on the inner wall of the through groove (4), the two stress arms (12) are arranged in a left-right staggered manner, the surfaces of the mutually close ends of the two stress arms (12) are respectively provided with stress grooves (13), the inner walls of the two stress grooves (13) are respectively fitted with the outer surfaces of the two straight moving rods (11), and the mutually far ends of the two stress arms (12) are respectively fixedly connected with rotating arms (14).
5. The film tensioning structure for a plastic film winding apparatus according to claim 4, wherein: The upper ends of the two rotating arms (14) are rotatably connected to the left and right sides of the inner wall of the through groove (4) through rotating shafts, the lower ends of the two rotating arms (14) are respectively provided with notches (15), and the mutually close sides of the bottoms of the two rotating arms (14) are respectively provided with positioning arms (16).
6. The film tensioning structure for a plastic film winding apparatus according to claim 5, wherein: The middle of two positioning arms (16) is respectively slidably connected to the outer surface of the position rod (401), and the side close to each other of the two positioning arms (16) is fixedly connected with a positioning spring (17), the positioning spring (17) is sleeved on the outer surface of the position rod (401), and the bottom of the two positioning arms (16) is respectively fixedly connected with a positioning block (18).
7. The film tensioning structure for a plastic film winding apparatus according to claim 6, wherein: The side away from each other of the two positioning blocks (18) is respectively fixedly connected to the bottom of the positioning arm (16), the end away from each other of the two positioning blocks (18) respectively extends out through the inner wall of the groove (4) through the opening (301), and the end away from each other of the two positioning blocks (18) is respectively inserted into the inner wall of the stop groove (701).