A film winding device for producing a car protective film

Abstract

This utility model relates to the field of automotive protective film rolling technology, and discloses a rolling device for producing automotive protective film, including a main component, a frame, a support frame fixed on the frame, and a rotating shaft on the support frame; an adjustment component, located on the rotating shaft, including an expansion member, and a locking member on the expansion member; the expansion member includes a fixing block fixed on the rotating shaft, a rotating plate connected to the rotating shaft by a bearing, and a rectangular block slidably disposed on the fixing block. The beneficial effects of this utility model are: by setting an expansion adjustment component, it tightly fits the inner wall of rolls of different diameters, and the surface contact ensures uniform force on the inner wall of the roll, while avoiding loosening problems caused by vibration and tensile force. Furthermore, during the expansion process, the expansion adjustment component can trigger a limit on the end face of the roll, restricting the axial displacement of the roll during winding, ensuring neat alignment of the film edges, and improving the product qualification rate.

Description

Technical Field

[0001] This utility model relates to the field of automotive film rolling technology, and in particular to a film rolling device for producing automotive protective film. Background Technology

[0002] The automotive film slitting machine is a key piece of equipment in the production and processing of automotive protective film. Its main function is to slit large rolls of automotive film into smaller rolls of different specifications according to production or market demands. The film winding device is the key equipment for realizing the slitting and winding of film materials, and its performance directly affects the winding quality and production efficiency of the product. The rotating shaft of the film winding device is usually fixed to the rolls of different diameters by tapered plugs on both sides. Positioning is achieved by the friction between the inclined surface of the tapered plug and the inner wall of the roll. Although this structure can adapt to rolls of different diameters to a certain extent, the tapered plugs rely on the friction of the inclined surface to maintain fixation. During the film winding process, as the rotating shaft rotates at high speed, the plugs are prone to gradually loosening, causing relative displacement between the roll and the rotating shaft, resulting in film offset, edge misalignment, wrinkles and other problems, which reduce the product qualification rate. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems existing in the above and / or existing film rolling equipment for producing automotive protective films, this utility model is proposed.

[0005] Therefore, the problem that this utility model aims to solve is that when the film slitting machine uses a conical plug to fix the roll, it is easy for the roll to loosen, resulting in film roll displacement, affecting the stability and effect of the roll.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a film rolling device for producing automotive protective film, comprising a main component including a frame, a support frame fixed on the frame, and a rotating shaft provided on the support frame;

[0007] An adjustment assembly, located on the rotating shaft, includes an expansion member, on which a locking member is provided;

[0008] The expansion member includes a fixed block fixed to the rotating shaft, a rotating plate connected to the rotating shaft by a bearing, a rectangular block slidably disposed on the fixed block, a first slider and a second slider fixed on the rectangular block, a straight groove opened on the fixed block, the first slider sliding in the straight groove, an arc groove opened on the rotating plate, the second slider sliding in the arc groove, and a first arc block fixed on one side of the rectangular block.

[0009] In a preferred embodiment of the automotive protective film production roll-up device of the present invention, the locking component includes a fixing ring fixed on the rotating shaft, a sliding groove formed in the fixing ring, a fixing post fixed on the rotating plate, a locking block slidably disposed in the fixing post, a first spring fixed at one end of the locking block, and a locking groove formed on the fixing ring.

[0010] As a preferred embodiment of the film rolling device for producing automotive protective film according to the present invention, wherein: an extrusion block is slidably arranged on the fixed column, one end of the extrusion block is inclined, and an inclined groove is formed on the locking block.

[0011] In a preferred embodiment of the automotive protective film production roll-up device of the present invention, there are multiple locking slots, a second spring is fixed on the extrusion block, and the other end of the second spring is fixed on the fixing post.

[0012] In a preferred embodiment of the automotive protective film production rolling device of the present invention, the adjusting component further includes an auxiliary component located on the rotating shaft, a baffle fixed on the rotating shaft, and a stop block fixed on the first arc-shaped block.

[0013] As a preferred embodiment of the film rolling device for producing automotive protective film according to the present invention, the rectangular block is provided with a moving groove, a moving block is slidably arranged in the moving groove, a third spring is fixed at one end of the moving block, and a second arc-shaped block is fixed at the other end of the moving block.

[0014] In a preferred embodiment of the automotive protective film production rolling device of the present invention, the number of the second arc-shaped blocks is four, and the first arc-shaped block is provided with a groove corresponding to the first arc-shaped block.

[0015] In a preferred embodiment of the automotive protective film production rolling device of the present invention, a sliding groove is also provided on the baffle.

[0016] In a preferred embodiment of the automotive protective film production rolling device of the present invention, there are two fixing blocks, and a sleeve is fixed on the fixing block.

[0017] In a preferred embodiment of the automotive protective film production rolling device of the present invention, a support block is connected to a bearing on one side of the rotating shaft, the support block is hinged to the support frame, and a meter counter is fixed on the frame.

[0018] The beneficial effects of this utility model are as follows: by setting an expansion adjustment component, it closely fits the inner wall of rolls of different diameters, and the surface contact makes the inner wall of the roll evenly stressed, while avoiding loosening caused by vibration and tensile force. In addition, during the expansion process, the expansion adjustment component can trigger the end face of the roll film to limit the axial displacement of the roll during the winding process, ensuring that the edges of the film are neatly aligned and improving the product qualification rate. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is an overall structural diagram of a film rolling device used in the production of automotive protective films.

[0021] Figure 2 Roll film equipment for automotive protective film production Figure 1 Enlarged view of the structure at point A in the middle.

[0022] Figure 3 A structural diagram of the support frame for a film rolling device used in the production of automotive protective film.

[0023] Figure 4 A side view of the rotating shaft structure of a film rolling device used in the production of automotive protective film.

[0024] Figure 5 A diagram showing the baffle structure of a film rolling device used in the production of automotive protective films.

[0025] Figure 6 A structural diagram of the fixing block for a film rolling device used in the production of automotive protective film.

[0026] Figure 7 A cross-sectional view of the fixing block in a film rolling device for automotive protective film production.

[0027] Figure 8 A structural diagram of the rotating plate of a film rolling device used in the production of automotive protective film.

[0028] Figure 9 This is a structural diagram of the second arc-shaped block of a film rolling device used in the production of automotive protective film.

[0029] Figure 10A structural diagram of the cross-section of the second arc-shaped block in a film rolling device for producing automotive protective film.

[0030] Figure 11 A structural diagram of the fixing ring of a film rolling device used in the production of automotive protective film.

[0031] Figure 12 Roll film equipment for automotive protective film production Figure 11 Cross-sectional structural diagram at point BB.

[0032] Figure 13 Roll film equipment for automotive protective film production Figure 12 Enlarged view of the structure at point C. Detailed Implementation

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0036] Example 1

[0037] Reference Figures 1-8 This is the first embodiment of the present invention. This embodiment provides a film rolling device for producing automotive protective film. The film rolling device for producing automotive protective film includes a main component 100, including a frame 101. A support frame 102 is fixed on the frame 101. A rotating shaft 103 is provided on the support frame 102. There are two support frames 102, which are used to support the rotating shaft 103. A handle is provided on one side of the rotating shaft 103 for driving the rotating shaft 103 to rotate. This is the prior art, and this solution will not be described in detail. Moreover, those skilled in the art can clearly understand the working principle.

[0038] The adjustment component 200, located on the rotating shaft 103, includes an expansion member 201. The expansion member 201 is used to clamp drums of different diameters but the same length, thereby achieving synchronous rotation of the drums and the rotating shaft 103. A locking member 202 is provided on the expansion member 201 to lock the expansion member 201 and prevent the expansion member 201 from shifting during the winding process, thus affecting the winding effect.

[0039] The expansion member 201 includes a fixed block 2011 fixed on the rotating shaft 103. A rotating plate 2012 is connected to the rotating shaft 103 by a bearing. The fixed block 2011 rotates synchronously with the rotating shaft 103. The rotating plate 2012 can rotate relative to the rotating shaft 103. The rotating plate 2012 is located on one side of the fixed block 2011.

[0040] A rectangular block 2013 is slidably mounted on a fixed block 2011. Four rectangular blocks 2013 slide within one fixed block 2011. A first slider 2014 and a second slider 2015 are fixed on each rectangular block 2013. A straight groove 2011-1 is formed on the fixed block 2011. The first slider 2014 slides within the straight groove 2011-1. Through the cooperation between the first slider 2014 and the straight groove 2011-1, the rectangular blocks 2013 can only slide along a straight line on the fixed block 2011. An arc-shaped groove 2012-1 is formed on the rotating plate 2012. The second slider 2015 slides within the arc-shaped groove 2012-1. In the initial state, the second slider 2015 is positioned... At the position closest to the center of the rotating plate 2012 in the arc groove 2012-1, the rectangular block 2013 will be completely located inside the fixed block 2011. At this time, the smallest diameter roll can be sleeved on the outside of the rotating shaft 103. When the rotating plate 2012 rotates, the second slider 2015 will slide synchronously in the arc groove 2012-1. The second slider 2015 slides along the arc groove 2012-1 towards the edge of the rotating plate 2012. The second slider 2015 drives the rectangular block 2013 to move synchronously, thereby causing the first slider 2014 to slide along the straight groove 2011-1 towards the edge of the fixed block 2011, thereby driving each rectangular block 2013 to move outward from the fixed block 2011.

[0041] A first arc-shaped block 2016 is fixed to one side of the rectangular block 2013. The first arc-shaped block 2016 can contact the inner wall of the drum, and a rubber protrusion is provided at the end in contact with it to increase the friction between the first arc-shaped block 2016 and the inner wall of the drum. At the same time, the rubber can deform so that the first arc-shaped block 2016 can achieve surface contact with the inner wall of the drum, thereby ensuring that the first arc-shaped block 2016 can fit tightly against the inner wall of the drum. The four first arc-shaped blocks 2016 simultaneously provide stable support for the drum, avoiding loosening problems caused by vibration and tensile force.

[0042] There are two expansion members 201, located on both sides of the rotating shaft 103, which are aligned and supported from the inner walls of both ends of the drum, so that the drum can rotate synchronously with the rotation of the rotating shaft 103.

[0043] Example 2

[0044] Reference Figures 11-13 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0045] Specifically, the locking component 202 includes a fixing ring 2021 fixed on the rotating shaft 103. The fixing ring 2021 has a sliding groove 2021-1 with an arc shape. A fixing post 2022 is fixed on the rotating plate 2012. The sliding groove 2021-1 is also arc-shaped, and the fixing post 2022 can slide within the sliding groove 2021-1. When the fixing post 2022 is pushed to slide within the sliding groove 2021-1, it will drive the rotating plate 2012 to rotate relative to the fixing block 2011, thereby causing the multiple first arc-shaped blocks 2016 to contract or expand simultaneously.

[0046] A locking block 2023 is slidably disposed inside the fixed column 2022. A first spring 2024 is fixed to one end of the locking block 2023. A through groove corresponding to the locking block 2023 is opened on the fixed column 2022. The other end of the first spring 2024 is fixed to the inner wall of the through groove. A locking groove 2021-2 is opened on the fixed ring 2021. The first spring 2024 applies a continuous pushing force to the locking block 2023 to ensure that the locking block 2023 can engage with the locking groove 2021-2. When the two are engaged, the fixed column 2022 cannot slide in the sliding groove 2021-1. At this time, the rotating plate 2012 cannot rotate relative to the fixed block 2011. The position of the second slider 2015 in the arc groove 2012-1 is locked, thereby locking the positions of the rectangular block 2013 and the first arc block 2016.

[0047] Specifically, a pressing block 2025 is slidably disposed on the fixed column 2022. The pressing block 2025 is used to release the locking block 2023 from the locking groove 2021-2. One end of the pressing block 2025 is inclined. The locking block 2023 has an inclined groove 2023-1. When the pressing block 2025 is pressed and moved towards the locking block 2023, the inclined surface of the pressing block 2025 will first contact the inclined groove 2023-1 and press the inclined groove 2023-1, thereby compressing the first spring 2024. The locking block 2023 will then separate from the locking block 2023, thereby releasing the limiting position of the rotating plate 2012.

[0048] Specifically, there are multiple locking slots 2021-2, and each locking slot 2021-2 corresponds to a drum of a certain diameter, so as to lock the positions of the rectangular block 2013 and the first arc block 2016 and fix drums of different diameters outside the rotating shaft 103.

[0049] A second spring 2026 is fixed on the extrusion block 2025. The other end of the second spring 2026 is fixed on the fixing post 2022. The second spring 2026 is used to support the extrusion block 2025. Without the action of other external forces, the inclined surface of the extrusion block 2025 will be located away from the locking block 2023, without affecting the normal engagement of the locking block 2023 and the locking groove 2021-2.

[0050] Specifically, the adjustment component 200 also includes an auxiliary component 203 located on the rotating shaft 103. The auxiliary component 203 is used to limit the two ends of the roll to prevent axial displacement during the film winding process.

[0051] The auxiliary component 203 includes a baffle 2031 fixed on the rotating shaft 103. The baffle 2031 is annular. When installing the drum, the drum is attached to the baffle 2031 to limit one end of the drum. A stop block 2032 is fixed on the first arc-shaped block 2016. The stop block 2032 is L-shaped. One end face of the stop block 2032 is on the same plane as the end face of the first arc-shaped block 2016 away from the rotating shaft 103 to avoid obstructing the installation of the drum with the smallest diameter. The stop block 2032 can limit the drum from the other end.

[0052] Example 3

[0053] Reference Figures 7-10 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0054] Specifically, a movable groove 2013-1 is provided on the rectangular block 2013. A movable block 2033 is slidably disposed within the movable groove 2013-1. A third spring 2034 is fixed to one end of the movable block 2033, and the other end of the movable groove 2013-1 is fixed within the movable groove 2013-1. A second arc-shaped block 2035 is fixed to the other end of the movable block 2033, and a rubber protrusion is also provided on it. The second arc-shaped block 2035 can contact the inner wall of the drum. By setting the second arc-shaped block 2035 and the first arc-shaped block 2016 as a telescopic structure, the rectangular block 2013... When the rectangular block 2013 expands and moves outward toward the fixed block 2011, the second arc-shaped block 2035 can first contact the inner wall of the drum. As the rectangular block 2013 moves further, the third spring 2034 will be compressed, causing the moving block 2033 to slide along the moving groove 2013-1. The second arc-shaped block 2035 will not hinder the first arc-shaped block 2016 from expanding outward toward the inner wall of the drum. At this time, the first arc-shaped block 2016 will drive the stop block 2032 to continue moving, causing the stop block 2032 to protrude from the end of the drum, thereby limiting the other end of the drum.

[0055] Specifically, there are four second arc-shaped blocks 2035. The first arc-shaped blocks 2016 have corresponding slots. The first arc-shaped blocks 2016 are divided into two groups, each group consisting of four blocks. The two groups of first arc-shaped blocks 2016 are located on either side of the rotating shaft 103. A baffle 2031 is located on one side of one group of first arc-shaped blocks 2016, while a stop block 2032 is fixed to the other group of first arc-shaped blocks 2016. The height of the stop block 2032 is slightly lower than that of the first arc block 2016 located on one side of the baffle 2031. In the initial state, the outer diameter of the first arc block 2016 is smaller than that of the other group of first arc blocks 2016. This allows the stop block 2032 to move upward relative to the second arc block 2035 when the third spring 2034 is compressed, so that the stop block 2032 protrudes from the end of the drum. One end face of the stop block 2032 is in contact with the side end face of the drum, thereby limiting the other end of the drum.

[0056] Specifically, a sliding groove 2021-1 is also provided on the baffle 2031.

[0057] Specifically, there are two fixing blocks 2011, and a sleeve 2036 is fixed on the fixing block 2011. The sleeve 2036 is designed so that when the drum is sleeved on the outside of the rotating shaft 103, the inside of the drum can first contact the sleeve 2036 and move smoothly onto the first arc-shaped block 2016.

[0058] Specifically, a support block 104 is connected to a bearing on one side of the rotating shaft 103. The support block 104 is hinged to one of the support frames 102. Two bearings are provided on the other support frame 102 to support the other side of the rotating shaft 103 without hindering the rotation of the rotating shaft 103.

[0059] When installing the drum, rotate the support block 104 relative to the support frame 102 so that the shaft 103 is slightly tilted. Insert the drum from the side of the shaft 103 where the stop block 2032 is provided, and make the drum fit against the baffle 2031. Then place the shaft 103 horizontally, with the other end of the shaft 103 resting on two bearings.

[0060] A meter counter 105 is fixed on the frame 101. The frame 101 is also equipped with guide rollers and a roll. A slitting drum of a certain size can be fitted over the roll. The meter counter 105 records the length of the car cover wound on the slitting drum, which is used to accurately cut a certain amount of car cover, thereby cutting the car cover on the roll into small rolls of different specifications and winding them on the slitting drum. This is existing technology, and this solution will not be described in detail. Moreover, those skilled in the art can clearly understand the working principle.

[0061] When using the drum, rotate the support block 104 relative to the support frame 102 so that the shaft 103 is slightly tilted. Insert the drum into the side of the shaft 103 where the stop block 2032 is provided, and make the drum fit against the baffle 2031. Then place the shaft 103 horizontally, with the other end of the shaft 103 resting on the two bearings.

[0062] When the pressing block 2025 is pressed and moved toward the locking block 2023, the inclined surface of the pressing block 2025 will first contact and press against the inclined groove 2023-1, thereby compressing the first spring 2024. The locking block 2023 will then separate from the locking block 2023, thus releasing the limiting position of the rotating plate 2012. Then, the fixed column 2022 will be pushed to slide in the slide groove 2021-1, and the rotating plate 2012 will rotate. The second slider 2015 will slide synchronously in the arc groove 2012-1. The second slider 2015 will slide along the arc groove 2012-1 toward the edge of the rotating plate 2012. The second slider 2015 will drive the rectangular block 2013 to move synchronously, thereby causing the first slider 2014 to move along the straight groove. Slide 2011-1 towards the edge of the fixed block 2011, thereby causing each rectangular block 2013 to move outward from the fixed block 2011, ultimately allowing the first arc-shaped block 2016 to fit tightly against the inner wall of the drum. Then, stop pressing the squeezing block 2025, and the first spring 2024 resets, causing the locking block 2023 to engage with the locking groove 2021-2. The fixed post 2022 cannot slide in the sliding groove 2021-1. At this time, the rotating plate 2012 cannot rotate relative to the fixed block 2011, and the position of the second slider 2015 in the arc groove 2012-1 is locked, thereby locking the positions of the rectangular block 2013 and the first arc-shaped block 2016, providing stable support for the drum and avoiding loosening problems caused by vibration and tensile force.

[0063] One side of the roll is in contact with the stop block 2032. When the first arc-shaped block 2016, located near the other side of the roll, moves, it cooperates with the second arc-shaped block 2035 to make one end face of the baffle 2031 fixed on the first arc-shaped block 2016 fit with the side end face of the roll, thereby limiting the other end of the roll and preventing axial displacement of the roll during slitting, which would affect the film winding effect.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A film rolling device for producing automotive protective film, characterized in that: include, The main component (100) includes a frame (101), on which a support frame (102) is fixed, and on which a rotating shaft (103) is provided. The adjustment component (200), located on the rotating shaft (103), includes an expansion member (201), on which a locking member (202) is provided; The expansion member (201) includes a fixed block (2011) fixed on the rotating shaft (103), a rotating plate (2012) is connected to the rotating shaft (103) by a bearing, a rectangular block (2013) is slidably disposed on the fixed block (2011), a first slider (2014) and a second slider (2015) are fixed on the rectangular block (2013), a straight groove (2011-1) is opened on the fixed block (2011), the first slider (2014) slides in the straight groove (2011-1), an arc groove (2012-1) is opened on the rotating plate (2012), the second slider (2015) slides in the arc groove (2012-1), and a first arc block (2016) is fixed on one side of the rectangular block (2013).

2. The film rolling device for producing automotive protective film as described in claim 1, characterized in that: The locking component (202) includes a fixing ring (2021) fixed on the rotating shaft (103), a sliding groove (2021-1) is provided in the fixing ring (2021), a fixing post (2022) is fixed on the rotating plate (2012), a locking block (2023) is slidably arranged in the fixing post (2022), a first spring (2024) is fixed at one end of the locking block (2023), and a locking groove (2021-2) is provided on the fixing ring (2021).

3. The film rolling device for producing automotive protective film as described in claim 2, characterized in that: A pressing block (2025) is slidably disposed on the fixed column (2022), one end of the pressing block (2025) is inclined, and a groove (2023-1) is provided on the locking block (2023).

4. The film rolling device for producing automotive protective film as described in claim 3, characterized in that: There are multiple locking slots (2021-2), and a second spring (2026) is fixed on the compression block (2025). The other end of the second spring (2026) is fixed on the fixing post (2022).

5. The film rolling device for producing automotive protective film as described in claim 3 or 4, characterized in that: The adjustment component (200) also includes an auxiliary component (203) located on the rotating shaft (103), a baffle (2031) fixed on the rotating shaft (103), and a stop block (2032) fixed on the first arc-shaped block (2016).

6. The film rolling device for producing automotive protective film as described in claim 5, characterized in that: The rectangular block (2013) has a movable groove (2013-1), and a movable block (2033) is slidably arranged in the movable groove (2013-1). A third spring (2034) is fixed at one end of the movable block (2033), and a second arc-shaped block (2035) is fixed at the other end of the movable block (2033).

7. The film rolling device for producing automotive protective film as described in claim 6, characterized in that: There are four of the second arc-shaped blocks (2035), and the first arc-shaped block (2016) has a groove corresponding to the first arc-shaped block (2016).

8. The film rolling apparatus for producing automotive protective film as described in claim 6 or 7, characterized in that: The baffle (2031) is also provided with a sliding groove (2021-1).

9. The film rolling device for producing automotive protective film as described in claim 8, characterized in that: There are two fixing blocks (2011), and a sleeve (2036) is fixed on the fixing block (2011).

10. The film rolling apparatus for producing automotive protective film as described in claim 9, characterized in that: A support block (104) is connected to a bearing on one side of the rotating shaft (103). The support block (104) is hinged to the support frame (102). A meter counter (105) is fixed on the frame (101).

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