A folding device for a release film and a coating system

Abstract

The utility model relates to a kind of folding device and coating system for release film, folding device includes upper traction unit, lower traction unit, two folding units, two auxiliary transmission units, two first adjusting units and two second adjusting units.Its advantage lies in, after coating, it is inflated and folded, evenly distributed with silicon oil in folding position, with release effect in the folding position of release film, avoid the problem of sticking in traditional process;Fold before coating drying, winding, simultaneously realize folding and winding, greatly improve production efficiency;The position and angle of folding unit are quickly adjusted using first adjusting unit, it is convenient to carry out real-time online adjustment according to different specifications of release film, simple and fast;The angle of auxiliary transmission unit is quickly adjusted using second adjusting unit, it is convenient to ensure that release film contacts auxiliary transmission unit according to inflation effect, improve transmission efficiency.

Description

Technical Field

[0001] This utility model relates to the field of release film production technology, and in particular to a folding device and coating system for release film. Background Technology

[0002] In the packaging materials industry, foldable release bags are widely used in electronics, medical, and food industries due to their excellent isolation properties and ease of storage. Currently, the traditional production process for foldable release bags mainly employs a step-by-step processing model. First, plastic granules are blown into a film using a blown film process, during which the film is folded. Then, the folded film is coated, typically with silicone oil to achieve a release effect. Finally, the film is processed into finished release bags through a bag-making process.

[0003] However, the aforementioned traditional production process has significant drawbacks. Due to the unique structural shape of the folded area, it is difficult to evenly coat all corners of the fold during the coating process. This uneven coating problem makes the folded release bags prone to sticking together during subsequent packaging use. Once sticking occurs, it not only affects the normal handling and packaging efficiency of the product, but may also lead to product damage or contamination, causing unnecessary economic losses and usage inconvenience for customers, and failing to meet the modern industrial demand for high-quality and high-efficiency packaging materials.

[0004] Currently, no effective solutions have been proposed for the problems existing in related technologies, such as uneven silicone oil coating at the folding position of the release film, adhesion during subsequent packaging, and low production efficiency. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a folding device and coating system for release films, thereby solving problems such as uneven silicone oil coating at the folding position of the release film, adhesion during subsequent packaging, and low production efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] In a first aspect, a folding device for release films is provided for use in a coating machine, comprising:

[0008] The upper traction unit is used for inputting the release film;

[0009] A lower traction unit, located downstream of the upper traction unit, is used to output the release film;

[0010] Two folding units are disposed between the upper traction unit and the lower traction unit for folding the blown release film;

[0011] Two auxiliary transmission units are disposed between the upper traction unit and the lower traction unit, and respectively disposed on both sides of the two folding units, for assisting in the transmission of the release film;

[0012] Two first adjustment units are respectively connected to the corresponding folding unit and are used to adjust the position of the corresponding folding unit;

[0013] Two second adjustment units are respectively connected to the corresponding auxiliary transmission units and are used to adjust the angle of the corresponding auxiliary transmission units.

[0014] In some embodiments, the upper traction unit includes:

[0015] The first upper traction element is disposed upstream of the two folding units and upstream of the two auxiliary transmission units;

[0016] The second upper traction element is disposed upstream of the two folding units and upstream of the two auxiliary transmission units, and is symmetrically disposed with the first upper traction element, for cooperating with the first upper traction element to input the release film.

[0017] In some embodiments, the lower traction unit includes:

[0018] The first lower traction element is disposed downstream of the two folding units and downstream of the two auxiliary transmission units;

[0019] The second lower traction element is disposed downstream of the two folding units and the two auxiliary transmission units, and is symmetrically arranged with the first lower traction element. It is used to cooperate with the first lower traction element to output the release film.

[0020] In some embodiments, the folding unit includes:

[0021] A folding element is disposed between the upper traction unit and the lower traction unit, between the two auxiliary transmission units, and on the side of another folding unit. It is used to adjust the position under the action of the corresponding first adjustment unit and to cooperate with another folding unit to fold the blown release film. The top width of the folding element is greater than the bottom width of the folding element.

[0022] At least one first connecting element is disposed on the side of the folding element and connected to the corresponding first adjusting unit, for adjusting the position of the folding element under the action of the corresponding first adjusting unit.

[0023] In some embodiments, the auxiliary transmission unit includes:

[0024] A first support element is disposed between the upper traction unit and the lower traction unit, and is located on the side of the two folding units;

[0025] A plurality of auxiliary transmission elements are distributed on the first support element and rotatably connected to the first support element, for assisting in the transmission of the release film;

[0026] At least one second movable element is disposed on the side of the first support element and connected to the corresponding second adjustment unit, for adjusting the tilt angle of the first support element under the action of the corresponding second adjustment unit.

[0027] In some embodiments, the first adjustment unit includes:

[0028] At least one first limiting element;

[0029] At least one first movable element, the first end of the first movable element is connected to the corresponding folding unit and is movably connected to the corresponding first limiting element, for driving the corresponding folding unit to reciprocate in the horizontal direction;

[0030] At least one first locking element, the first locking element being movably connected to a corresponding first limiting element and being removably locked to a corresponding first movable element, for defining the relative position of the first movable element and the first limiting element in the vertical direction;

[0031] At least one second locking element is movably connected to a corresponding first limiting element and removably locked to a corresponding first movable element, for defining the relative position of the first movable element and the first limiting element in the horizontal direction.

[0032] In some embodiments, the first adjustment unit further includes:

[0033] At least one second connecting element is disposed at the end of the corresponding first movable element and connected to the corresponding folding unit.

[0034] In some embodiments, the first adjustment unit further includes:

[0035] At least one second limiting element is disposed on the corresponding first limiting element and is movably connected to the corresponding first locking element to limit the movement direction of the corresponding first locking element.

[0036] In some embodiments, the first adjustment unit further includes:

[0037] At least one third limiting element is provided, which is disposed on the corresponding first limiting element and is movably connected to the corresponding second locking element, for limiting the movement direction of the corresponding second locking element.

[0038] In some embodiments, the second adjustment unit includes:

[0039] At least one second support element is disposed on the side of the corresponding auxiliary transmission unit;

[0040] At least one third support element is provided on the side of the corresponding auxiliary transmission unit and is symmetrically arranged with the corresponding second support element;

[0041] At least one third movable element is rotatably connected to a corresponding second support element, a corresponding third support element, and a corresponding auxiliary transmission unit, respectively, for adjusting the angle of the corresponding auxiliary transmission unit;

[0042] At least one first control element is disposed at the end of the corresponding third movable element for driving the corresponding third movable element to rotate.

[0043] In some of these embodiments, it also includes:

[0044] Two support units are symmetrically arranged, and two folding units and two auxiliary transmission units are arranged between the two support units, and are respectively connected to the two first adjustment units and the two second adjustment units.

[0045] In some embodiments, the support unit includes:

[0046] A support element is disposed on the side of the folding unit and the side of the two auxiliary transmission units, and is symmetrically arranged with the other support unit, and is respectively connected to the corresponding first adjustment unit and the corresponding second adjustment unit;

[0047] At least one fourth movable element is disposed on the support element and movably connected to the corresponding auxiliary transmission unit, for defining the movement direction of the auxiliary transmission unit.

[0048] In some of these embodiments, it also includes:

[0049] Two rotating units are respectively connected to the corresponding auxiliary transmission unit and the corresponding support unit to assist the corresponding auxiliary transmission unit in rotating.

[0050] In some embodiments, the support unit further includes:

[0051] At least one fifth movable element is disposed on the support unit and movably connected to the corresponding rotating unit.

[0052] In some embodiments, the rotating unit includes:

[0053] At least one first rotating element is disposed on the corresponding auxiliary transmission unit and is used to rotate following the corresponding auxiliary transmission unit.

[0054] At least one second rotating element is disposed on the corresponding support unit;

[0055] At least one third rotating element is rotatably connected to one of the corresponding first rotating element and the corresponding second rotating element, and is used to assist the rotation of the corresponding first rotating element.

[0056] In some of these embodiments, it also includes:

[0057] Two third adjustment units are respectively connected to the corresponding support unit and the corresponding rotation unit, and are used to adjust the position of the corresponding rotation unit.

[0058] In some embodiments, the third adjustment unit includes:

[0059] At least one fourth support element is disposed on the corresponding bracket unit;

[0060] At least one sixth movable element, the sixth movable element being connected to the corresponding rotating unit and movably connected to the corresponding fourth support element, for adjusting the position of the corresponding rotating unit;

[0061] At least one second control element is disposed at the end of the corresponding sixth movable element for driving the corresponding sixth movable element to rotate.

[0062] Secondly, a coating system for release films is provided, comprising:

[0063] The folding device as described in the first aspect.

[0064] Some of these implementations also include:

[0065] A drying device is disposed upstream of the folding device;

[0066] A winding device is disposed downstream of the folding device;

[0067] An inflation device is provided on the side of the folding device for inflating the release film located between the two folding units of the folding device.

[0068] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0069] This invention discloses a folding device and coating system for release films. After coating, the film is inflated and folded. Silicone oil is evenly distributed at the folding position, providing a release effect and avoiding adhesion problems in traditional processes. Folding occurs before coating drying and winding, achieving simultaneous folding and winding, greatly improving production efficiency. A first adjustment unit allows for rapid adjustment of the position and angle of the folding unit, facilitating real-time online adjustment for different release film specifications, which is simple and fast. A second adjustment unit allows for rapid adjustment of the angle of the auxiliary transmission unit, ensuring contact between the release film and the auxiliary transmission unit based on the inflating effect, thus improving transmission efficiency. Attached Figure Description

[0070] Figure 1 This is a schematic diagram (a) of a folding device according to an embodiment of the present utility model;

[0071] Figure 2 This is a schematic diagram (II) of the folding device according to an embodiment of the present utility model;

[0072] Figure 3 This is a schematic diagram of the upper traction unit according to an embodiment of the present utility model;

[0073] Figure 4 This is a schematic diagram of the lower traction unit according to an embodiment of the present utility model;

[0074] Figure 5 This is a schematic diagram of a folding unit according to an embodiment of the present utility model;

[0075] Figure 6 This is a schematic diagram of an auxiliary transmission unit according to an embodiment of the present utility model;

[0076] Figure 7 This is a schematic diagram of the first adjustment unit according to an embodiment of the present utility model;

[0077] Figure 8 This is a schematic diagram of the second adjustment unit according to an embodiment of the present utility model;

[0078] Figure 9 This is a schematic diagram of a support unit according to an embodiment of the present utility model;

[0079] Figure 10 This is a schematic diagram of the rotating unit according to an embodiment of the present utility model;

[0080] Figure 11 This is a schematic diagram of the third adjustment unit according to an embodiment of the present utility model;

[0081] Figure 12 This is a schematic diagram of a coating system according to an embodiment of the present invention.

[0082] The reference numerals in the attached drawings are: 100, folding device;

[0083] 110. Upper traction unit; 111. First upper traction element; 112. Second upper traction element;

[0084] 120. Lower traction unit; 121. First lower traction element; 122. Second lower traction element;

[0085] 130. Folding unit; 131. Folding element; 132. First connecting element;

[0086] 140. Auxiliary transmission unit; 141. First support element; 142. Auxiliary transmission element; 143. Second movable element;

[0087] 150. First adjusting unit; 151. First limiting element; 152. First movable element; 153. First locking element; 154. Second locking element; 155. Second connecting element; 156. Second limiting element; 157. Third limiting element;

[0088] 160. Second adjustment unit; 161. Second support element; 162. Third support element; 163. Third movable element; 164. First control element;

[0089] 170. Support unit; 171. Support element; 172. Fourth movable element; 173. Fifth movable element;

[0090] 180. Rotating unit; 181. First rotating element; 182. Second rotating element; 183. Third rotating element;

[0091] 190. Third adjustment unit; 191. Fourth support element; 192. Sixth movable element; 193. Second control element;

[0092] 200. Drying device; 300. Winding device; 400. Inflating device. Detailed Implementation

[0093] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0094] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0095] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0096] Example 1

[0097] This embodiment relates to the folding device of this utility model.

[0098] An illustrative embodiment of this utility model, such as Figures 1-2 As shown, a folding device 100 for release film, used in a coating machine, includes an upper traction unit 110, a lower traction unit 120, two folding units 130, two auxiliary transmission units 140, two first adjustment units 150, and two second adjustment units 160. The upper traction unit 110 is used to input the release film; the lower traction unit 120 is located downstream of the upper traction unit 110 and is used to output the release film; the two folding units 130 are located between the upper traction unit 110 and the lower traction unit 120 and are used to fold the inflated release film; the two auxiliary transmission units 140 are located between the upper traction unit 110 and the lower traction unit 120, and are respectively located on both sides of the two folding units 130, for assisting in the transmission of the release film; the two first adjustment units 150 are respectively connected to the corresponding folding units 130 and are used to adjust the position of the corresponding folding units 130; the two second adjustment units 160 are respectively connected to the corresponding auxiliary transmission units 140 and are used to adjust the angle of the corresponding auxiliary transmission units 140.

[0099] The method of using this utility model is as follows:

[0100] The positions of the two folding units 130 are adjusted by the two first adjustment units 150 respectively, that is, the distance between the two folding units 130 and the tilt angle of the two folding units 130 are adjusted.

[0101] The positions of the two auxiliary transmission units 140 are adjusted by the two second adjustment units 160 respectively, that is, the tilt angle of the two auxiliary transmission units 140 is adjusted so that the tops of the two auxiliary transmission units 140 are far apart from each other and the bottoms of the two auxiliary transmission units 140 are close to each other, thereby forming an inverted triangle structure.

[0102] When the upper traction unit 110 and the lower traction unit 120 are working, the release film is input through the upper traction unit 110 to the space between the two folding units 130 and the two auxiliary transmission units 140.

[0103] Under the action of the blowing device, the release film is inflated, and the outer surfaces of the left and right sides of the release film abut against the two auxiliary transmission units 140 respectively, and the film edges of the front and rear sides of the release film abut against the two folding units 130 respectively.

[0104] The inflated release film is finally output to the downstream process by the lower traction unit 120.

[0105] like Figure 3 As shown, the upper traction unit 110 includes a first upper traction element 111 and a second upper traction element 112. The first upper traction element 111 is located upstream of the two folding units 130 and upstream of the two auxiliary transmission units 140; the second upper traction element 112 is located upstream of the two folding units 130 and upstream of the two auxiliary transmission units 140, and is symmetrically arranged with the first upper traction element 111, for cooperating with the first upper traction element 111 to input the release film.

[0106] The first upper traction element 111 can be either an active traction element or a passive traction element.

[0107] In some embodiments, the first upper traction element 111 includes, but is not limited to, traction rollers, such as traction steel rollers or traction rubber rollers.

[0108] The second upper traction element 112 can be either an active traction element or a passive traction element. Generally, one of the first upper traction element 111 and the second upper traction element 112 is an active traction element and the other is a passive traction element.

[0109] The dimensions of the second upper traction element 112 are matched with the dimensions of the first upper traction element 111. Generally, the radial dimension (e.g., outer diameter) of the second upper traction element 112 is equal to the radial dimension (e.g., outer diameter) of the first upper traction element 111, and the axial dimension (e.g., length) of the second upper traction element 112 is equal to the axial dimension (e.g., length) of the first upper traction element 111.

[0110] In some embodiments, the second upper traction element 112 includes, but is not limited to, traction rollers, such as traction steel rollers or traction rubber rollers.

[0111] In some of these embodiments, one of the first upper traction element 111 and the second upper traction element 112 is a traction steel roller and the other is a traction rubber roller.

[0112] like Figure 4As shown, the lower traction unit 120 includes a first lower traction element 121 and a second lower traction element 122. The first lower traction element 121 is located downstream of the two folding units 130 and downstream of the two auxiliary transmission units 140; the second lower traction element 122 is located downstream of the two folding units 130 and downstream of the two auxiliary transmission units 140, and is symmetrically arranged with the first lower traction element 121, for cooperating with the first lower traction element 121 to output the release film.

[0113] The first traction element 121 can be either an active traction element or a passive traction element.

[0114] In some embodiments, the first lower traction element 121 includes, but is not limited to, traction rollers, such as traction steel rollers or traction rubber rollers.

[0115] The second lower traction element 122 can be either an active traction element or a passive traction element. Generally, one of the first lower traction element 121 and the second lower traction element 122 is an active traction element and the other is a passive traction element.

[0116] The dimensions of the second lower traction element 122 are matched with the dimensions of the first lower traction element 121. Generally, the radial dimension (e.g., outer diameter) of the second lower traction element 122 is equal to the radial dimension (e.g., outer diameter) of the first lower traction element 121, and the axial dimension (e.g., length) of the second lower traction element 122 is equal to the axial dimension (e.g., length) of the first lower traction element 121.

[0117] In some embodiments, the second lower traction element 122 includes, but is not limited to, traction rollers, such as traction steel rollers or traction rubber rollers.

[0118] In some of these embodiments, one of the first lower traction element 121 and the second lower traction element 122 is a traction steel roller and the other is a traction rubber roller.

[0119] like Figure 5 As shown, the folding unit 130 includes a folding element 131 and at least one first connecting element 132. The folding element 131 is disposed between the upper traction unit 110 and the lower traction unit 120, between the two auxiliary transmission units 140, and on the side of another folding unit 130. It is used to adjust the position under the action of the corresponding first adjusting unit 150 and to cooperate with the other folding unit 130 to fold the inflated release film. The width of the top of the folding element 131 is greater than the width of the bottom. The first connecting element 132 is disposed on the side of the folding element 131 and connected to the corresponding first adjusting unit 150, used to adjust the position of the folding element 131 under the action of the corresponding first adjusting unit 150.

[0120] Specifically, the folding element 131 is disposed downstream of the first upper traction element 111 and the second upper traction element 112, and upstream of the first lower traction element 121 and the second lower traction element 122.

[0121] The shape of the folding element 131 is a special shape. Specifically, when viewed from the first side (such as the front side) to the second side (such as the rear side) of the folding element 131, the folding element 131 has a structure that is wider at the top and narrower at the bottom, such as an inverted isosceles triangle or an inverted isosceles trapezoid; when viewed from the third side (such as the left side) to the fourth side (such as the right side) of the folding element 131, the folding element 131 has a structure that is narrower at the top and wider at the bottom or a structure with equal width at the top and bottom.

[0122] In some of these embodiments, the folding element 131 includes, but is not limited to, a folding plate.

[0123] The first connecting element 132 is disposed on the side of the folding element 131 away from the other folding unit 130.

[0124] The first connecting element 132 is fixedly connected to the folding element 131, including but not limited to welding and integral molding.

[0125] In some embodiments, there are multiple first connecting elements 132. The multiple first connecting elements 132 are spaced apart along the height direction of the folding element 131.

[0126] For example, there are two first connecting elements 132. The two first connecting elements 132 are spaced apart along the height direction of the folding element 131. The purpose of this arrangement is to facilitate precise adjustment of the tilt angle of the folding element 131. Specifically, if the first adjustment unit 150 of the first connecting element 132 at the higher position is stationary and the first adjustment unit 150 of the first connecting element 132 at the lower position moves, the folding element 131 can rotate with the first connecting element 132 at the higher position as the base point; if the first adjustment unit 150 of the first connecting element 132 at the higher position moves and the first adjustment unit 150 of the first connecting element 132 at the lower position is stationary, the folding element 131 can rotate with the first connecting element 132 at the lower position as the base point; if both the first adjustment units 150 of the first connecting element 132 at the higher position and the first adjustment unit 150 of the first connecting element 132 at the lower position move, the tilt angle and position of the folding element 131 can be adjusted by adjusting the relative speed of the two first adjustment units 150 (the relative speed is 0 or the relative speed is not 0).

[0127] In some of these embodiments, the first connecting element 132 includes, but is not limited to, a connecting plate, a connecting groove, a connecting hole, etc.

[0128] like Figure 6 As shown, the auxiliary transmission unit 140 includes a first support element 141, a plurality of auxiliary transmission elements 142, and at least one second movable element 143. The first support element 141 is disposed between the upper traction unit 110 and the lower traction unit 120, and is located on the side of the two folding units 130. The plurality of auxiliary transmission elements 142 are distributed on the first support element 141 and rotatably connected to it, for assisting in the transmission of the release film. The second movable element 143 is disposed on the side of the first support element 141 and connected to a corresponding second adjustment unit 160, for adjusting the tilt angle of the first support element 141 under the action of the corresponding second adjustment unit 160.

[0129] Specifically, the first support element 141 is disposed downstream of the first upper traction element 111 and the second upper traction element 112, upstream of the first lower traction element 121 and the second lower traction element 122, and located on the side of the two folding elements 131.

[0130] Generally, the first support element 141 is inclined. The inclination angle of the first support element 141 is approximately the same as the shape of the folding element 131.

[0131] In some of these embodiments, the first support element 141 includes, but is not limited to, a support frame.

[0132] Several auxiliary transmission elements 142 are spaced apart along the height direction of the first support element 141.

[0133] Generally, the auxiliary transmission element 142 is a passive transmission element.

[0134] In some of these embodiments, the auxiliary transmission element 142 includes, but is not limited to, guide rollers.

[0135] The second movable element 143 is fixedly connected to or detachably connected to the first support element 141, including but not limited to welding, integral molding, bolt connection, etc.

[0136] In some embodiments, there are multiple second movable elements 143. The multiple second movable elements 143 are spaced apart along the height direction and / or length direction of the first support element 141.

[0137] For example, there are two second movable elements 143. The two second movable elements 143 are symmetrically arranged on both sides of the first support element 141 (such as the first side and the second side). The purpose of this arrangement is to improve the stability of the first support element 141.

[0138] For example, there are two second movable elements 143. These two second movable elements 143 are spaced apart along the height direction of the first support element 141. This arrangement facilitates precise adjustment of the tilt angle of the first support element 141. Specifically, if the second movable element 143 in the higher position is stationary and the second movable element 143 in the lower position is moving, the first support element 141 can rotate around the second movable element 143 in the higher position as a reference point; if the second movable element 143 in the higher position is moving and the second movable element 143 in the lower position is stationary, the first support element 141 can rotate around the second movable element 143 in the lower position as a reference point; if both the second movable elements 143 in the higher and lower positions are moving, the tilt angle and position of the first support element 141 can be adjusted by regulating the relative speed of the two second movable elements 143 (relative speed is 0 or not 0).

[0139] For example, there are four second movable elements 143. Two second movable elements 143 are spaced apart along the height direction of the first side of the first support element 141, and two second movable elements 143 are spaced apart along the height direction of the second side of the first support element 141. The two second movable elements 143 on the first side correspond one-to-one with the two second movable elements 143 on the second side.

[0140] In some of these embodiments, the second active element 143 includes, but is not limited to, a slider.

[0141] like Figure 7 As shown, the first adjustment unit 150 includes at least one first limiting element 151, at least one first movable element 152, at least one first locking element 153, and at least one second locking element 154. The first end of the first movable element 152 is connected to the corresponding folding unit 130 and is movably connected to the corresponding first limiting element 151, for driving the corresponding folding unit 130 to reciprocate horizontally. The first locking element 153 is movably connected to the corresponding first limiting element 151 and is removably locked to the corresponding first movable element 152, for defining the relative position of the first movable element 152 and the first limiting element 151 in the vertical direction. The second locking element 154 is movably connected to the corresponding first limiting element 151 and is removably locked to the corresponding first movable element 152, for defining the relative position of the first movable element 152 and the first limiting element 151 in the horizontal direction.

[0142] Specifically, the first active element 152 is connected to the first connecting element 132.

[0143] The first limiting element 151 is disposed on the side of one folding element 131 away from the other folding element 131. Generally, the first limiting element 151 is installed in a fixed position (such as a bracket, frame, etc.), and the first limiting element 151 generally does not contact the folding element 131.

[0144] In some embodiments, there are multiple first limiting elements 151. The multiple first limiting elements 151 are spaced apart along the height direction of the folding element 131.

[0145] The number of first limiting elements 151 matches the number of first connecting elements 132. Generally, the number of first limiting elements 151 is equal to the number of first connecting elements 132.

[0146] Generally, the first limiting element 151 is a hollow structure.

[0147] In some of these embodiments, the first limiting element 151 includes, but is not limited to, a limiting rod, a limiting frame, a limiting base, etc.

[0148] The movable connection between the first movable element 152 and the first limiting element 151 is at least a sliding connection.

[0149] The first active element 152 and the first connecting element 132 can be directly connected or indirectly connected.

[0150] The first movable element 152 is detachably connected to the first connecting element 132, including but not limited to bolt connection, plug connection, etc.

[0151] The number of first movable elements 152 matches the number of first connecting elements 132 (first limiting elements 151). Generally, the number of first movable elements 152 is equal to the number of first connecting elements 132 (first limiting elements 151).

[0152] The dimensions of the first movable element 152 are matched with the dimensions of the first limiting element 151. Generally, the radial dimension (such as outer diameter, width, height, etc.) of the first movable element 152 is not greater than the radial dimension (such as outer diameter, width, height, etc.) of the inner edge surface of the first limiting element 151, and the axial dimension (such as length) of the first movable element 152 is greater than the axial dimension (such as length) of the first limiting element 151.

[0153] In some embodiments, the first movable element 152 includes an end portion and a rod portion. The radial dimension (e.g., outer diameter, width, height, etc.) of the end portion is greater than the radial dimension (e.g., outer diameter, width, height, etc.) of the rod portion, and the axial dimension (e.g., length) of the end portion is smaller than the axial dimension (e.g., length) of the rod portion.

[0154] In some of these embodiments, the first movable element 152 includes, but is not limited to, an adjusting rod.

[0155] The first locking element 153 is threadedly connected to the first limiting element 151. That is, the first locking element 153 moves vertically up and down by rotating in a spiral, thereby abutting against the first movable element 152 to lock the first movable element 152 (the first movable element 152 cannot move) or moving away from the first movable element 152 to release the first movable element 152 (the first movable element 152 can move).

[0156] The number of first locking elements 153 matches the number of first limiting elements 151. Generally, the number of first locking elements 153 is an integer multiple of the number of first limiting elements 151. That is, each first limiting element 151 is provided with at least one first locking element 153. When each first limiting element 151 is provided with a plurality of first locking elements 153, the plurality of first locking elements 153 are spaced apart along the length direction of the corresponding first limiting element 151.

[0157] In some of these embodiments, the first locking element 153 includes, but is not limited to, a locking screw, a locking bolt, etc.

[0158] The second locking element 154 is threadedly connected to the first limiting element 151. That is, the second locking element 154 moves horizontally left and right by rotating in a spiral, thereby abutting against the first movable element 152 to lock the first movable element 152 (the first movable element 152 cannot move) or moving away from the first movable element 152 to release the first movable element 152 (the first movable element 152 can move).

[0159] The number of second locking elements 154 matches the number of first limiting elements 151. Generally, the number of second locking elements 154 is an integer multiple of the number of first limiting elements 151. That is, each first limiting element 151 is provided with at least one second locking element 154. When each first limiting element 151 is provided with a plurality of second locking elements 154, the plurality of second locking elements 154 are spaced apart along the length direction and / or width direction of the corresponding first limiting element 151.

[0160] The explanation will take a single first limiting element 151 as an example.

[0161] For example, there are two second locking elements 154. The two second locking elements 154 are symmetrically arranged on both sides of the first limiting element 151 (e.g., the first side and the second side). The purpose of this arrangement is to allow adjustment of the horizontal position of the first movable element 152 (e.g., to the left, to the right, or to the center), thereby adjusting the horizontal position of the folding element 131 (e.g., to the left, to the right, or to the center).

[0162] For example, there are two second locking elements 154. The two second locking elements 154 are spaced apart along the length direction of the first limiting element 151. The purpose of this arrangement is to effectively limit the first movable element 152 and prevent the first movable element 152 from tilting.

[0163] For example, there are four second locking elements 154. Two second locking elements 154 are spaced apart along the length direction of the first side of the first limiting element 151, and two second locking elements 154 are spaced apart along the length direction of the second side of the first limiting element 151. The two second locking elements 154 on the first side and the two second locking elements 154 on the second side can correspond one-to-one.

[0164] In some of these embodiments, the second locking element 154 includes, but is not limited to, a locking screw, a locking bolt, etc.

[0165] Furthermore, the first adjustment unit 150 also includes at least one second connecting element 155. The second connecting element 155 is disposed at the end of the corresponding first movable element 152 and connected to the corresponding folding unit 130.

[0166] The second connecting element 155 is fixedly connected to or detachably connected to the first movable element 152, including but not limited to welding, integral molding, bolt connection, etc.

[0167] The second connecting element 155 is detachably connected to the first connecting element 132, including but not limited to bolt connection, plug connection, etc.

[0168] The number of second connecting elements 155 matches the number of first moving elements 152. Generally, the number of second connecting elements 155 is equal to the number of first moving elements 152.

[0169] In some embodiments, the second connecting element 155 includes, but is not limited to, a connecting plate, a connecting base, etc.

[0170] Furthermore, the first adjustment unit 150 also includes at least one second limiting element 156. The second limiting element 156 is disposed on the corresponding first limiting element 151 and is movably connected to the corresponding first locking element 153 to limit the movement direction of the corresponding first locking element 153.

[0171] The second limiting element 156 is set through the corresponding first limiting element 151.

[0172] The number of second limiting elements 156 matches the number of first limiting elements 151. Generally, the number of second limiting elements 156 is an integer multiple of the number of first limiting elements 151. That is, each first limiting element 151 is provided with at least one second limiting element 156. When each first limiting element 151 is provided with a plurality of second limiting elements 156, the plurality of second limiting elements 156 are spaced apart along the length direction of the corresponding first limiting element 151.

[0173] The number of second limiting elements 156 matches the number of first locking elements 153. Generally, the number of second limiting elements 156 is equal to the number of first locking elements 153.

[0174] In some of these embodiments, the second limiting element 156 includes, but is not limited to, a limiting hole and a limiting screw hole.

[0175] Furthermore, the first adjustment unit 150 also includes at least one third limiting element 157. The third limiting element 157 is disposed on the corresponding first limiting element 151 and is movably connected to the corresponding second locking element 154 to limit the movement direction of the corresponding second locking element 154.

[0176] The third limiting element 157 is set through the corresponding first limiting element 151.

[0177] The number of third limiting elements 157 matches the number of first limiting elements 151. Generally, the number of third limiting elements 157 is an integer multiple of the number of first limiting elements 151. That is, each first limiting element 151 is provided with at least one third limiting element 157. When each first limiting element 151 is provided with a plurality of third limiting elements 157, the plurality of third limiting elements 157 are spaced apart along the length direction and / or width direction of the corresponding first limiting element 151.

[0178] The number of third limiting elements 157 matches the number of second locking elements 154. Generally, the number of third limiting elements 157 is equal to the number of second locking elements 154.

[0179] In some of these embodiments, the third limiting element 157 includes, but is not limited to, a limiting hole and a limiting screw hole.

[0180] like Figure 8As shown, the second adjustment unit 160 includes at least one second support element 161, at least one third support element 162, at least one third movable element 163, and at least one first control element 164. The second support element 161 is disposed on the side of the corresponding auxiliary transmission unit 140; the third support element 162 is disposed on the side of the corresponding auxiliary transmission unit 140 and symmetrically arranged with the corresponding second support element 161; the third movable element 163 is rotatably connected to the corresponding second support element 161, the corresponding third support element 162, and the corresponding auxiliary transmission unit 140, respectively, for adjusting the angle of the corresponding auxiliary transmission unit 140; the first control element 164 is disposed at the end of the corresponding third movable element 163 for driving the corresponding third movable element 163 to rotate.

[0181] Specifically, the second support element 161 is disposed on the first side and / or the second side of the corresponding first support element 141; the third movable element 163 is rotatably connected to the corresponding second movable element 143.

[0182] Generally, the second support element 161 is installed in a fixed position (such as a bracket, frame, etc.), and the second support element 161 generally does not contact the first support element 141.

[0183] The number of second support elements 161 matches the number of second movable elements 143. Generally, the number of second support elements 161 is equal to the number of second movable elements 143.

[0184] In some embodiments, there are multiple second support elements 161. The multiple second support elements 161 are spaced apart along the height direction and / or length direction of the first support element 141.

[0185] In some of these embodiments, the second support element 161 includes, but is not limited to, a rotating base, a support base, a support baffle, etc.

[0186] Generally, the third support element 162 is installed in a fixed position (such as a bracket, frame, etc.), and the third support element 162 generally does not contact the first support element 141.

[0187] The number of third support elements 162 matches the number of second support elements 161 (second movable elements 143). Generally, the number of third support elements 162 is equal to the number of second support elements 161 (second movable elements 143).

[0188] In some embodiments, there are multiple third support elements 162. The multiple third support elements 162 are spaced apart along the height direction and / or length direction of the first support element 141.

[0189] In some of these embodiments, the third support element 162 includes, but is not limited to, a rotating base, a support base, a support baffle, etc.

[0190] The rotational connection between the third movable element 163 and the second support element 161, the third support element 162, and the second movable element 143 is a threaded connection, that is, the third movable element 163 drives the second movable element 143 to move left and right in the horizontal direction through the self-rotation of the helical screw.

[0191] The number of third movable elements 163 matches the number of second movable elements 143 (second support element 161, third support element 162). Generally, the number of third movable elements 163 is equal to the number of second movable elements 143 (second support element 161, third support element 162).

[0192] In some of these embodiments, the third active element 163 includes, but is not limited to, a lead screw.

[0193] The first control element 164 and the third movable element 163 are fixedly connected or detachably connected, including but not limited to plug-in connection, bolt connection, etc.

[0194] The number of first control elements 164 matches the number of third movable elements 163. Generally, the number of first control elements 164 is equal to the number of third movable elements 163.

[0195] In some of these embodiments, the first control element 164 includes, but is not limited to, a control turntable.

[0196] The method of using this utility model is as follows:

[0197] Based on the input and output widths of the release film, the positions and angles of the two folding elements 131 are adjusted by the first movable element 152, so that a space that is wider at the top and narrower at the bottom can be formed between the two folding elements 131 (viewed from the third side to the fourth side of the folding element 131), thereby making the width of the output release film smaller than the width of the input release film.

[0198] The tilt angles of the two first support elements 141 are adjusted by the third movable element 163 so that the two first support elements 141 match the two sides (third side and fourth side) of the two folding elements 131, so that the film contact of the blown release film is located on a number of auxiliary transmission elements 142 of the two first support elements 141.

[0199] Start the upper traction unit 110 (first upper traction element 111, second upper traction element 112) and the lower traction unit 120 (first lower traction element 121, second lower traction element 122) to input the folded release film and output the folded release film.

[0200] During the transfer of the release film, the release film located between the two folding elements 131 is inflated.

[0201] The technical effects of this utility model are as follows:

[0202] 1) After coating, the film is blown and folded. Silicone oil is evenly distributed at the folding position, which has a release effect at the folding position of the release film, avoiding the adhesion problem that occurs in traditional processes.

[0203] 2) Folding is performed before coating, drying, and winding, achieving folding and winding simultaneously, which greatly improves production efficiency;

[0204] 3) The position and angle of the folding unit can be quickly adjusted using the first adjustment unit, which is convenient for real-time online adjustment according to different specifications of release film, and is simple and fast;

[0205] 4) The angle of the auxiliary transmission unit can be quickly adjusted using the second adjustment unit, which makes it easier to ensure that the release film contacts the auxiliary transmission unit according to the blowing effect, thereby improving the transmission efficiency.

[0206] Example 2

[0207] This embodiment is a modified embodiment of embodiment 1.

[0208] like Figures 1-2 As shown, the folding device 100 also includes two support units 170. The two support units 170 are symmetrically arranged, and two folding units 130 and two auxiliary transmission units 140 are arranged between the two support units 170, and are respectively connected to two first adjustment units 150 and two second adjustment units 160.

[0209] like Figure 9 As shown, the support unit 170 includes a support element 171 and at least one fourth movable element 172. The support element 171 is disposed on the side of the folding unit 130 and the sides of the two auxiliary transmission units 140, and is symmetrically arranged with another support unit 170, and is respectively connected to the corresponding first adjustment unit 150 and the corresponding second adjustment unit 160; the fourth movable element 172 is disposed on the support element 171 and is movably connected to the corresponding auxiliary transmission unit 140, used to limit the movement direction of the auxiliary transmission unit 140.

[0210] Specifically, the support element 171 is connected to the corresponding first limiting element 151, the corresponding second supporting element 161, and the corresponding third supporting element 162, and the fourth movable element 172 is movably connected to the corresponding second movable element 143.

[0211] The bracket element 171 is fixedly connected or detachably connected to the first limiting element 151, the second supporting element 161, and the third supporting element 162, including but not limited to welding, integral molding, bolt connection, etc.

[0212] In some of these embodiments, the support element 171 includes, but is not limited to, mounting brackets, mounting frames, etc.

[0213] For the support elements 171 of the two support units 170, the two support elements 171 can be connected by reinforcing elements (such as reinforcing rods) to improve stability.

[0214] The fourth active element 172 is installed through the support element 171.

[0215] The movable connection between the fourth movable element 172 and the second movable element 143 is at least a sliding connection.

[0216] The number of fourth movable elements 172 matches the number of second movable elements 143. Generally, the number of fourth movable elements 172 × 2 (the number of support units 170) = the number of second movable elements 143 × 2 (the number of auxiliary transmission units 140).

[0217] In some embodiments, there are multiple fourth movable elements 172. These multiple fourth movable elements 172 are spaced apart along the height and / or width direction of the support element 171.

[0218] In some of these embodiments, the fourth active element 172 includes, but is not limited to, an active slot.

[0219] The usage method of this embodiment is basically the same as that of Embodiment 1, and will not be repeated here.

[0220] The technical effects of this embodiment are basically the same as those of Embodiment 1, and will not be repeated here.

[0221] Example 3

[0222] This embodiment is a modified embodiment of embodiment 2.

[0223] like Figures 1-2 As shown, the folding device 100 also includes two rotating units 180. The two rotating units 180 are respectively connected to the corresponding auxiliary transmission unit 140 and the corresponding support unit 170, and are used to assist the corresponding auxiliary transmission unit 140 in rotating.

[0224] Furthermore, such as Figure 9 As shown, the support unit 170 also includes at least one fifth movable element 173. The fifth movable element 173 is disposed in the support unit 170 and is movably connected to the corresponding rotating unit 180.

[0225] Specifically, the fifth active element 173 is disposed on the support element 171.

[0226] The fifth active element 173 passes through the support element 171.

[0227] Generally, the fifth active element 173 is located near the bottom of the support element 171.

[0228] In some embodiments, there are two fifth movable elements 173. The two fifth movable elements 173 are symmetrically arranged on the support element 171.

[0229] The embodiments include the following two implementation methods:

[0230] 1) There is one fifth movable element 173, which is simultaneously movably connected to two rotating units 180;

[0231] 2) There are two fifth moving elements 173. The two fifth moving elements 173 are not connected to each other and are rotatably connected to the corresponding rotating unit 180 respectively.

[0232] In some of these embodiments, the fifth active element 173 includes, but is not limited to, an active slot.

[0233] like Figure 10 As shown, the rotating unit 180 includes at least one first rotating element 181, at least one second rotating element 182, and at least one third rotating element 183. The first rotating element 181 is disposed on the corresponding auxiliary transmission unit 140 and rotates with the corresponding auxiliary transmission unit 140; the second rotating element 182 is disposed on the corresponding support unit 170; the third rotating element 183 is rotatably connected to one of the corresponding first rotating element 181 or the corresponding second rotating element 182, and assists the rotation of the corresponding first rotating element 181.

[0234] Specifically, the first rotating element 181 is disposed on the first supporting element 141 and is used to rotate with the corresponding first supporting element 141; the second rotating element 182 is disposed on the bracket element 171; and the third rotating element 183 is movably connected to the fifth movable element 173.

[0235] The first rotating element 181 is fixedly connected to or detachably connected to the first supporting element 141, including but not limited to plug-in connection, bolt connection, etc.

[0236] In some embodiments, there are two first rotating elements 181. The two first rotating elements 181 are symmetrically arranged on both sides (first side and second side) of the first support element 141.

[0237] In some of these embodiments, the first rotating element 181 includes, but is not limited to, a rotating base.

[0238] The second rotating element 182 is fixedly connected to or detachably connected to the bracket element 171, including but not limited to plug-in connection, bolt connection, etc.

[0239] The number of second rotating elements 182 matches the number of first rotating elements 181. Generally, the number of second rotating elements 182 is equal to the number of first rotating elements 181.

[0240] In some embodiments, there are two second rotating elements 182. The two second rotating elements 182 are symmetrically arranged on both sides (first side and second side) of the support element 171.

[0241] In some of these embodiments, the second rotating element 182 includes, but is not limited to, a rotating base.

[0242] The relationship between the third rotating element 183 and the first rotating element 181 and the second rotating element 182 is as follows:

[0243] 1) The third rotating element 183 is rotatably connected to the first rotating element 181, and the third rotating element 183 is fixedly connected to the second rotating element 182;

[0244] 2) The third rotating element 183 is fixedly connected to the first rotating element 181, and the third rotating element 183 is rotatably connected to the second rotating element 182;

[0245] 3) The third rotating element 183 is rotatably connected to the first rotating element 181 and the second rotating element 182 respectively.

[0246] The fixed connection between the third rotating element 183 and the first rotating element 181 (second rotating element 182) includes, but is not limited to, bolt connection, plug connection, etc.

[0247] The number of third rotating elements 183 matches the number of first rotating elements 181 (second rotating elements 182). Generally, the number of third rotating elements 183 is equal to the number of first rotating elements 181 (second rotating elements 182).

[0248] In some of these embodiments, the third rotating element 183 includes, but is not limited to, a rotating shaft.

[0249] The usage method of this embodiment is basically the same as that of Embodiments 1 to 2, and will not be repeated here.

[0250] The technical effects of this embodiment are basically the same as those of Embodiments 1 and 2, and will not be repeated here.

[0251] Example 4

[0252] This embodiment is a modified embodiment of embodiment 3.

[0253] like Figures 1-2 As shown, the folding device 100 also includes two third adjustment units 190. The two third adjustment units 190 are respectively connected to the corresponding support unit 170 and the corresponding rotation unit 180, and are used to adjust the position of the corresponding rotation unit 180.

[0254] like Figure 11 As shown, the third adjustment unit 190 includes at least one fourth support element 191, at least one sixth movable element 192, and at least one second control element 193. The fourth support element 191 is disposed on the corresponding bracket unit 170; the sixth movable element 192 is connected to the corresponding rotation unit 180 and movably connected to the corresponding fourth support element 191, for adjusting the position of the corresponding rotation unit 180; the second control element 193 is disposed at the end of the corresponding sixth movable element 192, for driving the corresponding sixth movable element 192 to rotate.

[0255] Specifically, the fourth support element 191 is disposed on the corresponding bracket element 171; the sixth movable element 192 is connected to the corresponding second rotating element 182 and is used to adjust the position of the corresponding second rotating element 182.

[0256] The number of fourth support elements 191 matches the number of second rotating elements 182. Generally, the number of fourth support elements 191 is equal to the number of second rotating elements 182.

[0257] In some embodiments, there are two fourth support elements 191. The two fourth support elements 191 are respectively disposed on the two support elements 171.

[0258] In some of these embodiments, the fourth support element 191 includes, but is not limited to, a rotating base, a support base, a support baffle, etc.

[0259] The sixth movable element 192 is detachably connected to the second rotating element 182, including but not limited to plug-in connection, bolt connection, etc.

[0260] The sixth movable element 192 and the fourth support element 191 are connected by a threaded connection, that is, the sixth movable element 192 drives the second rotating element 182 to move left and right in the horizontal direction by rotating the screw.

[0261] The number of sixth movable elements 192 matches the number of second rotating elements 182 (fourth support elements 191). Generally, the number of sixth movable elements 192 is equal to the number of second rotating elements 182 (fourth support elements 191).

[0262] In some of these embodiments, the sixth active element 192 includes, but is not limited to, a lead screw.

[0263] The second control element 193 is fixedly connected to or detachably connected to the sixth movable element 192, including but not limited to plug-in connection, bolt connection, etc.

[0264] The number of second control elements 193 matches the number of sixth movable elements 192. Generally, the number of second control elements 193 is equal to the number of sixth movable elements 192.

[0265] In some of these embodiments, the second control element 193 includes, but is not limited to, a control turntable.

[0266] The usage method of this embodiment is as follows:

[0267] Based on the input and output widths of the release film, the positions and angles of the two folding elements 131 are adjusted by the first movable element 152, so that a space that is wider at the top and narrower at the bottom can be formed between the two folding elements 131 (viewed from the third side to the fourth side of the folding element 131), thereby making the width of the output release film smaller than the width of the input release film.

[0268] The tilt angles of the two first support elements 141 are adjusted by the sixth movable element 192 and the third movable element 163 respectively, so that the two first support elements 141 match the two sides (third side and fourth side) of the two folding elements 131, thereby making the film of the blown release film contact the several auxiliary transmission elements 142 located on the two first support elements 141.

[0269] Start the upper traction unit 110 (first upper traction element 111, second upper traction element 112) and the lower traction unit 120 (first lower traction element 121, second lower traction element 122) to input the folded release film and output the folded release film.

[0270] During the transfer of the release film, the release film located between the two folding elements 131 is inflated.

[0271] The technical effects of this embodiment are basically the same as those of Embodiments 1 to 3, and will not be repeated here.

[0272] Example 5

[0273] This embodiment relates to the coating system of this utility model.

[0274] An illustrative embodiment of this utility model, such as Figure 12 As shown, a coating system for release films includes a folding device 100 as described in any one of Examples 1 to 4.

[0275] Furthermore, the coating system also includes a drying device 200, a winding device 300, and a blow-up device 400. The drying device 200 is located upstream of the folding device 100; the winding device 300 is located downstream of the folding device 100; and the blow-up device 400 is located on the side of the folding device 100 and is used to blow up the release film located between the two folding units 130 of the folding device 100.

[0276] In some embodiments, the drying device 200 includes, but is not limited to, an oven, which is basically conventional equipment in this technical field and will not be described in detail here.

[0277] In some embodiments, the winding device 300 includes, but is not limited to, a winding machine, which is basically conventional equipment in this technical field and will not be described in detail here.

[0278] In some embodiments, the inflation device 400 includes, but is not limited to, an inflation machine, which is basically a conventional device in this technical field and will not be described in detail here.

[0279] The usage method of this embodiment is basically the same as that of Embodiments 1-4, and will not be repeated here.

[0280] The technical effects of this embodiment are basically the same as those of Embodiments 1-4, and will not be repeated here.

[0281] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A folding device for release film, used in a coating machine, characterized in that, include: The upper traction unit is used for inputting the release film; A lower traction unit, located downstream of the upper traction unit, is used to output the release film; Two folding units are disposed between the upper traction unit and the lower traction unit for folding the blown release film; Two auxiliary transmission units are disposed between the upper traction unit and the lower traction unit, and respectively disposed on both sides of the two folding units, for assisting in the transmission of the release film; Two first adjustment units are respectively connected to the corresponding folding unit and are used to adjust the position of the corresponding folding unit; Two second adjustment units are respectively connected to the corresponding auxiliary transmission units and are used to adjust the angle of the corresponding auxiliary transmission units.

2. The folding device according to claim 1, characterized in that, The upper traction unit includes: The first upper traction element is disposed upstream of the two folding units and upstream of the two auxiliary transmission units; The second upper traction element is disposed upstream of the two folding units and upstream of the two auxiliary transmission units, and is symmetrically arranged with the first upper traction element. It is used to cooperate with the first upper traction element to input the release film; and / or The lower traction unit includes: The first lower traction element is disposed downstream of the two folding units and downstream of the two auxiliary transmission units; The second lower traction element is disposed downstream of the two folding units and the two auxiliary transmission units, and is symmetrically arranged with the first lower traction element. It is used to cooperate with the first lower traction element to output the release film; and / or The folding unit includes: A folding element is disposed between the upper traction unit and the lower traction unit, between the two auxiliary transmission units, and on the side of another folding unit. It is used to adjust the position under the action of the corresponding first adjustment unit and to cooperate with another folding unit to fold the blown release film. The top width of the folding element is greater than the bottom width of the folding element. At least one first connecting element is disposed on the side of the folding element and connected to a corresponding first adjusting unit, for adjusting the position of the folding element under the action of the corresponding first adjusting unit; and / or The first adjustment unit includes: At least one first limiting element; At least one first movable element, the first end of the first movable element is connected to the corresponding folding unit and is movably connected to the corresponding first limiting element, for driving the corresponding folding unit to reciprocate in the horizontal direction; At least one first locking element, the first locking element being movably connected to a corresponding first limiting element and being removably locked to a corresponding first movable element, for defining the relative position of the first movable element and the first limiting element in the vertical direction; At least one second locking element, the second locking element being movably connected to a corresponding first limiting element and removably locked to a corresponding first movable element, for defining the relative position of the first movable element and the first limiting element in the horizontal direction; and / or The auxiliary transmission unit includes: A first support element is disposed between the upper traction unit and the lower traction unit, and is located on the side of the two folding units; A plurality of auxiliary transmission elements are distributed on the first support element and rotatably connected to the first support element, for assisting in the transmission of the release film; At least one second movable element is disposed on the side of the first support element and connected to a corresponding second adjustment unit, for adjusting the tilt angle of the first support element under the action of the corresponding second adjustment unit; and / or The second adjustment unit includes: At least one second support element is disposed on the side of the corresponding auxiliary transmission unit; At least one third support element is provided on the side of the corresponding auxiliary transmission unit and is symmetrically arranged with the corresponding second support element; At least one third movable element is rotatably connected to a corresponding second support element, a corresponding third support element, and a corresponding auxiliary transmission unit, respectively, for adjusting the angle of the corresponding auxiliary transmission unit; At least one first control element is disposed at the end of the corresponding third movable element for driving the corresponding third movable element to rotate.

3. The folding device according to any one of claims 1 to 2, characterized in that, Also includes: Two support units are symmetrically arranged, and two folding units and two auxiliary transmission units are arranged between the two support units, and are respectively connected to the two first adjustment units and the two second adjustment units.

4. The folding device according to claim 3, characterized in that, The support unit includes: A support element is disposed on the side of the folding unit and the side of the two auxiliary transmission units, and is symmetrically arranged with the other support unit, and is respectively connected to the corresponding first adjustment unit and the corresponding second adjustment unit; At least one fourth movable element is disposed on the support element and movably connected to the corresponding auxiliary transmission unit, for defining the movement direction of the auxiliary transmission unit.

5. The folding device according to claim 3, characterized in that, Also includes: Two rotating units are respectively connected to the corresponding auxiliary transmission unit and the corresponding support unit to assist the corresponding auxiliary transmission unit in rotating.

6. The folding device according to claim 5, characterized in that, The support unit also includes: At least one fifth movable element, the fifth movable element being disposed on the support unit and movably connected to the corresponding rotating unit; and / or The rotating unit includes: At least one first rotating element is disposed on the corresponding auxiliary transmission unit and is used to rotate following the corresponding auxiliary transmission unit. At least one second rotating element is disposed on the corresponding support unit; At least one third rotating element is rotatably connected to one of the corresponding first rotating element and the corresponding second rotating element, and is used to assist the rotation of the corresponding first rotating element.

7. The folding device according to claim 5, characterized in that, Also includes: Two third adjustment units are respectively connected to the corresponding support unit and the corresponding rotation unit, and are used to adjust the position of the corresponding rotation unit.

8. The folding device according to claim 7, characterized in that, The third adjustment unit includes: At least one fourth support element is disposed on the corresponding bracket unit; At least one sixth movable element, the sixth movable element being connected to the corresponding rotating unit and movably connected to the corresponding fourth support element, for adjusting the position of the corresponding rotating unit; At least one second control element is disposed at the end of the corresponding sixth movable element for driving the corresponding sixth movable element to rotate.

9. A coating system for release films, characterized in that, include: The folding device as described in any one of claims 1 to 8.

10. The coating system according to claim 9, characterized in that, Also includes: A drying device is disposed upstream of the folding device; A winding device is disposed downstream of the folding device; An inflation device is provided on the side of the folding device for inflating the release film located between the two folding units of the folding device.

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