Roller structure and film production equipment

Abstract

The utility model relates to a roller structure and film production equipment, the roller structure comprises a roller unit and a buffer unit, and the radial size of the middle part of the roller structure is larger than that of the end part of the roller structure. The roller structure has the advantages that the roller structure is oval or fusiform, so that two side ends of a passing film cannot be wrinkled, and the film is smoother; and under the condition that the roller structure is not oval or fusiform due to abrasion of the buffer unit, the buffer unit is replaced, and the use cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of film production equipment, in particular to a roller structure and film production equipment. Background Art

[0002] In the film production process, a roller structure is generally used to transport the film. The existing transmission structure generally uses an upper roller and a lower roller. Generally, the diameter of the upper roller and the diameter of the lower roller remain unchanged, that is, during the transmission process, the pressure on the film is balanced. However, due to poor equipment accuracy and film uniformity, the produced film is prone to wrinkles.

[0003] Currently, no effective solution has been proposed for the problems of wrinkles on both sides of the membrane in the related art. Utility Model Content

[0004] The utility model aims to provide a roller structure and film production equipment to solve the problems of wrinkles on both sides of the film in the related art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, a roller structure is provided, comprising:

[0007] A roller unit, wherein the roller unit is rotatably arranged;

[0008] A buffer unit, wherein the buffer unit is sleeved on the roller unit;

[0009] Wherein, the radial dimension of the middle portion of the roller structure is greater than the radial dimension of the end portion of the roller structure.

[0010] In some of the embodiments, the roller unit comprises:

[0011] A roller element, wherein the roller element is rotatably arranged, wherein the radial dimension of the middle portion of the roller element is greater than the radial dimension of the end portion of the roller element or the radial dimension of the middle portion of the roller element is equal to the radial dimension of the end portion of the roller element;

[0012] Two rotating elements are symmetrically arranged at two ends of the roller element and are rotatably connected to the device.

[0013] In some of the embodiments, the radial dimension of the roller element decreases from the middle to the end thereof.

[0014] In some of the embodiments, the roller unit further comprises:

[0015] A plurality of first limiting elements are distributed at the end of the roller element and are connected to the buffer unit in a limiting manner so as to limit the position of the buffer unit.

[0016] In some embodiments, the buffer unit includes:

[0017] A buffer element is provided so as to be sleeved on the roller unit, wherein the radial dimension of the middle portion of the buffer element is greater than the radial dimension of the end portion of the buffer element or the radial dimension of the middle portion of the buffer element is equal to the radial dimension of the end portion of the buffer element.

[0018] In some of the embodiments, the radial dimension of the buffer element decreases from the middle to the end thereof.

[0019] In some of the embodiments, the buffer unit further comprises:

[0020] A plurality of second limiting elements are distributed at the ends of the buffer element and are connected to the roller unit in a limiting manner so as to limit the position of the buffer element.

[0021] In some of the embodiments, it also includes:

[0022] A limiting unit is removably disposed at an end of the roller unit and is used to limit the position of the buffer unit.

[0023] In some embodiments, the limiting unit includes:

[0024] a third limiting element, wherein the third limiting element is removably disposed at an end of the roller unit;

[0025] At least one cavity element, wherein the cavity element is disposed on the inner edge surface of the third limiting element;

[0026] at least one elastic element, the elastic element being disposed inside the cavity element;

[0027] At least one magnetic limiting element, which is movably arranged in the cavity element, wherein the first end of the magnetic limiting element is connected to the elastic element, and the second end of the magnetic limiting element is protruding from the cavity element and is limitedly connected to the roller unit, and is used for reciprocating along the axial direction of the cavity element under the action of the magnetic structure to protrude from or be received in the cavity element.

[0028] In a second aspect, a membrane production device is provided, comprising:

[0029] The roller structure as described in the first aspect.

[0030] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0031] The utility model provides a roller structure and film production equipment, wherein the roller structure is elliptical or spindle-shaped, so that wrinkles will not appear on both side ends of the passing film, making the film smoother; when the buffer unit is worn and the roller structure is no longer elliptical or spindle-shaped, the buffer unit can be replaced, thereby greatly reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of a roller structure according to an embodiment of the utility model (I);

[0033] Figure 2 is a schematic diagram of a roller unit according to an embodiment of the utility model;

[0034] Figure 3 is a schematic diagram of a buffer unit according to an embodiment of the utility model;

[0035] Figure 4 is a cross-sectional view of a roller unit according to an embodiment of the utility model;

[0036] Figure 5 is a cross-sectional view of a buffer unit according to an embodiment of the utility model;

[0037] Figure 6 is a schematic diagram of a roller structure according to an embodiment of the utility model (II);

[0038] Figure 7 It is a cross-sectional view of a limiting unit according to an embodiment of the utility model.

[0039] The reference numerals are: 100, roller unit; 101, roller element; 102, rotating element; 103, first limiting element;

[0040] 200, buffer unit; 201, buffer element; 202, second limiting element;

[0041] 300, limiting unit; 301, third limiting element; 302, cavity element; 303, elastic element; 304, magnetic limiting element. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0044] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0045] Example 1

[0046] This embodiment relates to the roller structure of the utility model.

[0047] An illustrative embodiment of the present utility model is as follows: Figure 1 As shown, a roller structure includes a roller unit 100 and a buffer unit 200. The roller unit 100 is rotatably arranged; the buffer unit 200 is sleeved on the roller unit 100; and the radial dimension of the middle part of the roller structure is greater than the radial dimension of the end part of the roller structure.

[0048] The radial dimension of the middle portion of the roller structure is greater than the radial dimension of the end portion of the roller structure in the following cases:

[0049] 1) The radial dimension of the middle portion of the roller unit 100 is greater than the radial dimension of the end portion of the roller unit 100 , and the radial dimension of the middle portion of the buffer unit 200 is equal to the radial dimension of the end portion of the buffer unit 200 ;

[0050] 2) The radial dimension of the middle portion of the roller unit 100 is equal to the radial dimension of the end portion of the roller unit 100 , and the radial dimension of the middle portion of the buffer unit 200 is greater than the radial dimension of the end portion of the buffer unit 200 ;

[0051] 3) The radial dimension of the middle portion of the roller unit 100 is greater than the radial dimension of the end portion of the roller unit 100 , and the radial dimension of the middle portion of the buffer unit 200 is greater than the radial dimension of the end portion of the buffer unit 200 .

[0052] Preferably, the radial dimension of the middle portion of the roller unit 100 is equal to the radial dimension of the end portion of the roller unit 100 , and the radial dimension of the middle portion of the buffer unit 200 is greater than the radial dimension of the end portion of the buffer unit 200 .

[0053] Generally, the radial dimension of the roller structure decreases from the middle to the end thereof, that is, the longitudinal section of the roller structure is elliptical or spindle-shaped.

[0054] like Figure 2As shown, the roller unit 100 includes a roller element 101 and two rotating elements 102. The roller element 101 is rotatably arranged, and the radial dimension of the middle portion of the roller element 101 is greater than the radial dimension of the end portion of the roller element 101 or the radial dimension of the middle portion of the roller element 101 is equal to the radial dimension of the end portion of the roller element 101; the two rotating elements 102 are symmetrically arranged at both ends of the roller element 101 and are rotatably connected to the device.

[0055] The roller element 101 may be a hollow structure or a solid structure.

[0056] In this embodiment, the radial dimension of the roller element 101 generally refers to the outer diameter of the roller element 101 .

[0057] In some embodiments, when the radial dimension of the middle portion of the roller element 101 is greater than the radial dimension of the end portion of the roller element 101, the radial dimension of the roller element 101 decreases from the middle portion to the end portion, that is, the longitudinal section of the roller element 101 is elliptical or spindle-shaped.

[0058] In some of the embodiments, when the radial dimension of the middle portion of the roller element 101 is greater than the radial dimension of the end portion of the roller element 101, the difference between the radial dimension of the middle portion of the roller element 101 and the radial dimension of the end portion of the roller element 101 is ≥0.01 mm. Preferably, the difference between the radial dimension of the middle portion of the roller element 101 and the radial dimension of the end portion of the roller element 101 is ≥0.015 mm. More preferably, the difference between the radial dimension of the middle portion of the roller element 101 and the radial dimension of the end portion of the roller element 101 is ≥0.02 mm.

[0059] In some of the embodiments, the difference between the radial dimension of the middle portion of the roller element 101 and the radial dimension of the end portion of the roller element 101 is ≤0.1 mm. Preferably, the difference between the radial dimension of the middle portion of the roller element 101 and the radial dimension of the end portion of the roller element 101 is ≤0.05 mm. More preferably, the difference between the radial dimension of the middle portion of the roller element 101 and the radial dimension of the end portion of the roller element 101 is ≤0.04 mm. More preferably, the difference between the radial dimension of the middle portion of the roller element 101 and the radial dimension of the end portion of the roller element 101 is ≤0.03 mm.

[0060] In some of the embodiments, the roller element 101 is a steel roller.

[0061] In some of the embodiments, the rotating element 102 and the roller element 101 are integrally formed.

[0062] The size of the rotating element 102 matches the size of the roller element 101. Generally, the radial size (such as outer diameter) of the rotating element 102 is smaller than the radial size (such as outer diameter) of the roller element 101, and the axial size (such as length) of the rotating element 102 is smaller than the axial size (such as length) of the roller element 101.

[0063] In some embodiments, the rotating element 102 is a rotating shaft.

[0064] like Figure 3 As shown, the buffer unit 200 includes a buffer element 201. The buffer element 201 is sleeved with the roller unit 100, and the radial dimension of the middle portion of the buffer element 201 is greater than the radial dimension of the end portion of the buffer element 201 or the radial dimension of the middle portion of the buffer element 201 is equal to the radial dimension of the end portion of the buffer element 201.

[0065] Specifically, the buffer element 201 is arranged to be sleeved on the roller element 101 .

[0066] Among them, the radial dimension of the middle part of the buffer element 201 is greater than the radial dimension of the end part of the buffer element 201 or the radial dimension of the middle part of the buffer element 201 is equal to the radial dimension of the end part of the buffer element 201, which refers to the radial dimension of the initial state when the buffer element 201 is not sleeved on the roller element 101.

[0067] The cushioning element 201 is a hollow structure.

[0068] The radial dimension of the buffer element 201 includes the inner diameter of the buffer element 201 and the outer diameter of the buffer element 201. When the radial dimension of the middle portion of the buffer element 201 is greater than the radial dimension of the end portion of the buffer element 201, the following situations may occur:

[0069] 1) The inner diameter of the buffer element 201 remains unchanged, the outer diameter of the middle portion of the buffer element 201 is greater than the outer diameter of the end portion of the buffer element 201, and the wall thickness of the middle portion of the buffer element 201 (the difference between the outer diameter of the buffer element 201 and the inner diameter of the buffer element 201) is greater than the wall thickness of the end portion of the buffer element 201;

[0070] 2) The inner diameter of the middle portion of the buffer element 201 is greater than the inner diameter of the end portion of the buffer element 201 , the outer diameter of the middle portion of the buffer element 201 is greater than the outer diameter of the end portion of the buffer element 201 , and the wall thickness of the middle portion of the buffer element 201 (the difference between the outer diameter of the buffer element 201 and the inner diameter of the buffer element 201 ) is equal to or greater than the wall thickness of the end portion of the buffer element 201 .

[0071] In some embodiments, when the radial dimension of the middle portion of the buffer element 201 is greater than the radial dimension of the end portion of the buffer element 201, the radial dimension of the buffer element 201 decreases from the middle portion to the end portion, that is, the longitudinal section of the buffer element 201 is elliptical or spindle-shaped.

[0072] In some of the embodiments, when the radial dimension of the middle portion of the buffer element 201 is greater than the radial dimension of the end portion of the buffer element 201, the difference between the radial dimension of the middle portion of the buffer element 201 and the radial dimension of the end portion of the buffer element 201 is ≥ 0.01 mm. Preferably, the difference between the radial dimension of the middle portion of the buffer element 201 and the radial dimension of the end portion of the buffer element 201 is ≥ 0.015 mm. More preferably, the difference between the radial dimension of the middle portion of the buffer element 201 and the radial dimension of the end portion of the buffer element 201 is ≥ 0.02 mm.

[0073] In some of the embodiments, the difference between the radial dimension of the middle portion of the buffer element 201 and the radial dimension of the end portion of the buffer element 201 is ≤0.1 mm. Preferably, the difference between the radial dimension of the middle portion of the buffer element 201 and the radial dimension of the end portion of the buffer element 201 is ≤0.05 mm. More preferably, the difference between the radial dimension of the middle portion of the buffer element 201 and the radial dimension of the end portion of the buffer element 201 is ≤0.04 mm. More preferably, the difference between the radial dimension of the middle portion of the buffer element 201 and the radial dimension of the end portion of the buffer element 201 is ≤0.03 mm.

[0074] The size of the buffer element 201 matches the size of the roller element 101. Generally, the radial size (such as inner diameter) of the buffer element 201 is equal to the radial size (such as outer diameter) of the roller element 101, and the axial size (such as length) of the buffer element 201 is not greater than the axial size (such as length) of the roller element 101.

[0075] Preferably, the axial dimension (such as length) of the buffer element 201 is smaller than the axial dimension (such as length) of the roller element 101. In this case, the end of the buffer element 201 is at a certain distance from the end of the roller element 101. That is, the distance between the first end of the buffer element 201 and the first end of the roller element 101 is the first distance, and the distance between the second end of the buffer element 201 and the second end of the roller element 101 is the second distance. Generally, the first distance is equal to the second distance.

[0076] In some of the embodiments, the buffer element 201 is made of elastic material, including but not limited to rubber, silicone and the like.

[0077] Since the buffer element 201 is made of elastic material, when the buffer element 201 is not sleeved on the roller element 101, the buffer element 201 does not deform; when the buffer element 201 is sleeved on the roller element 101, the buffer element 201 may or may not deform. Whether the buffer element 201 deforms depends on the shape of the roller element 101. When the radial dimension of the roller element 101 remains unchanged, the buffer element 201 generally does not deform; when the radial dimension of the middle of the roller element 101 is larger than the radial dimension of the end of the roller element 101, the buffer element 201 may deform (if the inner diameter of the buffer element 201 remains unchanged), or the buffer element 201 may not deform (if the inner diameter of the middle of the buffer element 201 is larger than the inner diameter of the end of the buffer element 201).

[0078] In some of the embodiments, the buffer element 201 is a silicone sleeve.

[0079] The method of using this embodiment is as follows:

[0080] The buffer element 201 is sleeved on the roller element 101;

[0081] The roller element 101 is installed at a designated position of the equipment and is set as a lower roller;

[0082] During the operation of the equipment, the roller element 101 cooperates with the upper roller so that when the film passes between the upper roller and the roller element 101, the structural characteristics of the roller structure being high in the middle and low on both sides can be used to prevent wrinkles from appearing on both sides of the film, making the film smoother.

[0083] The technical effects of the utility model are as follows:

[0084] 1) The roller structure is oval or spindle-shaped, which can prevent wrinkles on both sides of the film passing through, making the film smoother;

[0085] 2) When the buffer unit is worn and the roller structure is no longer elliptical or spindle-shaped, the buffer unit can be replaced to greatly reduce the cost of use.

[0086] Example 2

[0087] This embodiment is an improved embodiment of Embodiment 1.

[0088] like Figure 4 As shown, the roller unit 100 further includes a plurality of first limiting elements 103. The plurality of first limiting elements 103 are distributed at the ends of the roller element 101 and are respectively connected to the buffer unit 200 in a limiting manner to limit the position of the buffer unit 200.

[0089] The cross section of the first limiting element 103 is circular, rectangular, rounded rectangular, oval, etc.

[0090] A plurality of first limiting elements 103 are symmetrically disposed at both ends of the roller element 101 , that is, at least one first limiting element 103 is disposed at the first end of the roller element 101 , and at least one first limiting element 103 is disposed at the second end of the roller element 101 .

[0091] In the case that a plurality of first limiting elements 103 are respectively disposed at both ends of the roller element 101 , the plurality of first limiting elements 103 are disposed around the ends of the roller element 101 .

[0092] Generally, the number of the first limiting elements 103 disposed at the first end of the roller element 101 is equal to the number of the first limiting elements 103 disposed at the second end of the roller element 101 .

[0093] The size of the first limiting element 103 matches the size of the roller element 101. Generally, the radial size (such as length, width, diameter) of the first limiting element 103 is smaller than the axial size (such as length) and circumferential size (such as circumference) of the roller element 101, and the axial size (such as depth) of the first limiting element 103 is smaller than the radial size (such as diameter, wall thickness) of the roller element 101.

[0094] In some embodiments, the first limiting element 103 includes but is not limited to a first limiting groove and a first limiting protrusion, wherein the first limiting protrusion includes a fixed protrusion and a pressing protrusion.

[0095] like Figure 5 As shown, the buffer unit 200 further includes a plurality of second limiting elements 202. The plurality of second limiting elements 202 are distributed at the ends of the buffer element 201 and are respectively connected to the roller unit 100 in a limiting manner to limit the position of the buffer element 201.

[0096] Specifically, a plurality of second limiting elements 202 are respectively connected to corresponding first limiting elements 103 in a limiting manner.

[0097] The cross section of the second limiting element 202 is circular, rectangular, rounded rectangular, oval, etc.

[0098] The second limiting elements 202 are at least disposed on the inner edge surface of the buffer element 201 (ie, the inner wall of the buffer element 201 ).

[0099] A plurality of second limiting elements 202 are symmetrically disposed at both ends of the buffer element 201 , that is, at least one second limiting element 202 is disposed at the first end of the buffer element 201 , and at least one second limiting element 202 is disposed at the second end of the buffer element 201 .

[0100] When a plurality of second limiting elements 202 are respectively disposed at two ends of the buffer element 201 , the plurality of second limiting elements 202 are disposed around the ends of the buffer element 201 .

[0101] Generally, the number of the second limiting elements 202 disposed at the first end of the buffer element 201 is equal to the number of the second limiting elements 202 disposed at the second end of the buffer element 201 .

[0102] The number of the second limiting elements 202 matches the number of the first limiting elements 103. Generally, the number of the second limiting elements 202 is not greater than the number of the first limiting elements 103.

[0103] The size of the second limiting element 202 matches the size of the buffer element 201. Generally, the radial size (such as length, width, diameter) of the second limiting element 202 is smaller than the axial size (such as length) and circumferential size (such as circumference) of the buffer element 201.

[0104] The size of the second limiting element 202 matches the size of the first limiting element 103. Generally, the radial size (such as length, width, diameter) of the second limiting element 202 is equal to the radial size (such as length, width, diameter) of the first limiting element 103, and the axial size (such as height) of the second limiting element 202 is equal to the axial size (such as height) of the first limiting element 103.

[0105] In some of the embodiments, the second limiting element 202 includes but is not limited to a second limiting groove and a second limiting protrusion.

[0106] In the case where the second limiting element 202 is a second limiting groove, the second limiting element 202 may be disposed through the buffer element 201 , or may not be disposed through the buffer element 201 .

[0107] When the second limiting element 202 is a second limiting groove, the first limiting element 103 is a first limiting protrusion; when the second limiting element 202 is a second limiting protrusion, the first limiting element 103 is a first limiting groove.

[0108] The method of using this embodiment is as follows:

[0109] The buffer element 201 is sleeved on the roller element 101, and the second limiting element 202 is connected to the first limiting element 103 to limit the position of the buffer element 201;

[0110] When the roller element 101 is in the working state, the buffer element 201 and the roller element 101 will not undergo relative displacement.

[0111] The technical effects of this embodiment are as follows:

[0112] By utilizing the limiting connection between the first limiting element and the second limiting element, the relative positions of the buffer unit and the roller unit can be limited, thereby preventing the buffer unit and the roller unit from being relatively displaced during operation.

[0113] Example 3

[0114] This embodiment is an improved embodiment of Embodiment 1 to Embodiment 2.

[0115] like Figure 6 As shown, the roller structure further includes a limiting unit 300 . The limiting unit 300 is removably disposed at the end of the roller unit 100 , and is used to limit the position of the buffer unit 200 .

[0116] Generally, there are two limiting units 300 , which are removably disposed at two ends of the roller unit 100 , respectively, to limit the two ends of the buffer unit 200 .

[0117] In this embodiment, the buffer unit 200 may include the second limiting element 202 or may not include the second limiting element 202. When the buffer unit 200 includes the second limiting element 202, the number of the second limiting elements 202 is less than the number of the first limiting elements 103.

[0118] In this embodiment, the first limiting element 103 is a first limiting groove.

[0119] When the buffer unit 200 includes the second limiting element 202, the first limiting elements 103 are classified into first type first limiting elements 103 and second type first limiting elements 103. The first type first limiting elements 103 are connected to the second limiting elements 202, and the second type first limiting elements 103 are connected to the limiting unit 300.

[0120] Generally, the radial dimension (eg, length, width, diameter) of the second-type first limiting element 103 is smaller than the radial dimension (eg, length, width, diameter) of the first-type first limiting element 103 .

[0121] There are generally at least two second-type first limiting elements 103 , that is, at least one second-type first limiting element 103 is disposed at the first end of the roller element 101 , and at least one second-type first limiting element 103 is disposed at the second end of the roller element 101 .

[0122] In the case that a plurality of second-type first limiting elements 103 are respectively disposed at both ends of the roller element 101 , the plurality of second-type first limiting elements 103 are disposed around the end of the roller element 101 .

[0123] like Figure 7As shown, the limiting unit 300 includes a third limiting element 301, at least one cavity element 302, at least one elastic element 303 and at least one magnetic limiting element 304. The third limiting element 301 is removably disposed at the end of the roller unit 100; the cavity element 302 is disposed on the inner edge surface of the third limiting element 301; the elastic element 303 is disposed inside the cavity element 302; the magnetic limiting element 304 is movably disposed in the cavity element 302, the first end of the magnetic limiting element 304 is connected to the elastic element 303, the second end of the magnetic limiting element 304 is protruding from the cavity element 302, and is limitedly connected to the roller unit 100, and is used for reciprocating along the axial direction of the cavity element 302 under the action of the magnetic structure to protrude or be received in the cavity element 302.

[0124] Specifically, the third limiting element 301 is removably disposed at the end of the roller element 101 ; the magnetic limiting element 304 is connected to the first limiting element 103 (ie, the second type of first limiting element 103 ) in a limiting manner.

[0125] The third limiting element 301 is in an arc shape or an annular shape. Generally, the third limiting element 301 is in an annular shape.

[0126] The size of the third limiting element 301 matches the size of the roller element 101. Generally, the radial size (such as inner diameter) of the third limiting element 301 is equal to the radial size (such as outer diameter) of the roller element 101, and the axial size (such as length, thickness) of the third limiting element 301 is smaller than the axial size (such as length) of the roller element 101.

[0127] The size of the third limiting element 301 matches the size of the buffer element 201. Generally, the radial size (such as the outer diameter) of the third limiting element 301 is not greater than the radial size (such as the outer diameter) of the end of the buffer element 201.

[0128] Generally, the axial dimension of the third limiting element 301 is not greater than 1 / 2 of the difference between the axial dimension of the roller element 101 and the axial dimension of the buffer element 201 .

[0129] In some of the embodiments, the third limiting element 301 may be made of a metal material or an elastic material.

[0130] The longitudinal section of the cavity element 302 is convex. Specifically, the cavity element 302 includes a first cavity and a second cavity. The first cavity is arranged inside the third limiting element 301 and connected to the elastic element 303; the second cavity is arranged on the inner edge surface of the third limiting element 301 and communicated with the first cavity for reciprocating motion of the magnetic limiting element 304.

[0131] The size of the first cavity matches the size of the third limiting element 301. Generally, the radial size (such as length, width, diameter) of the first cavity is smaller than the axial size (such as length) and circumferential size (such as circumference) of the third limiting element 301, and the axial size (such as depth) of the first cavity is smaller than the radial size (such as wall thickness) of the third limiting element 301.

[0132] The size of the second cavity matches the size of the third limiting element 301. Generally, the radial size (such as length, width, diameter) of the second cavity is smaller than the axial size (such as length) and circumferential size (such as circumference) of the third limiting element 301, and the axial size (such as depth) of the second cavity is smaller than the radial size (such as wall thickness) of the third limiting element 301.

[0133] The size of the second cavity matches the size of the first cavity. Generally, the radial size (such as length, width, diameter) of the second cavity is smaller than the radial size (such as length, width, diameter) of the first cavity.

[0134] The sum of the axial dimension of the second cavity and the axial dimension of the first cavity is smaller than the radial dimension (such as wall thickness) of the third limiting element 301 .

[0135] In some embodiments, there are a plurality of cavity elements 302 , which are disposed around the inner edge surface of the third limiting element 301 .

[0136] The number of the cavity elements 302 matches the number of the first limiting elements 103. Generally, the number of the cavity elements 302 is not greater than the number of the first limiting elements 103, or the number of the cavity elements 302 is not greater than the number of the second type of first limiting elements 103.

[0137] The size of the elastic element 303 matches the size of the cavity element 302. Generally, the radial size (such as outer diameter) of the elastic element 303 is not greater than the radial size (such as length, width, diameter) of the first cavity, and the axial size (such as length) of the elastic element 303 in the stretched state is not greater than the axial size (such as depth) of the first cavity.

[0138] Furthermore, the radial dimension (such as outer diameter) of the elastic element 303 is not greater than the radial dimension (such as length, width, diameter) of the second cavity.

[0139] The number of the elastic elements 303 matches the number of the cavity elements 302. Generally, the number of the elastic elements 303 is equal to the number of the cavity elements 302.

[0140] In some of the embodiments, the elastic element 303 includes but is not limited to a spring, a silicone pad, a rubber pad, etc.

[0141] The longitudinal section of the magnetic limiting element 304 is rectangular or convex.

[0142] The magnetic limiting element 304 is fixedly connected to the elastic element 303 .

[0143] The magnetic limiting element 304 has a working state and a recovery state. When the magnetic limiting element 304 is in the working state, the magnetic limiting element 304 is protruded from the cavity element 302 (the second cavity); when the magnetic limiting element 304 is in the recovery state, the magnetic limiting element 304 is not protruded from the cavity element 302 (the second cavity).

[0144] The size of the magnetic stopper element 304 matches the size of the cavity element 302. Generally, the radial size (such as length, width, diameter) of the magnetic stopper element 304 is not greater than the radial size (such as length, width, diameter) of the first cavity, and the axial size (such as height) of the magnetic stopper element 304 is greater than the axial size (such as depth) of the second cavity.

[0145] In some of the embodiments, the radial dimension (eg, length, width, diameter) of the magnetic limiting element 304 is not greater than the radial dimension (eg, length, width, diameter) of the second cavity.

[0146] The size of the magnetic limiting element 304 matches the size of the first limiting element 103 (or the second type of first limiting element 103). Generally, the radial size (such as length, width, diameter) of the magnetic limiting element 304 is not greater than the radial size (such as length, width, diameter) of the first limiting element 103, and the axial size (such as height) of the magnetic limiting element 304 is not greater than the axial size (such as depth) of the first limiting element 103.

[0147] The number of magnetic stop elements 304 matches the number of cavity elements 302. Generally, the number of magnetic stop elements 304 is equal to the number of cavity elements 302.

[0148] The number of the magnetic limiting elements 304 matches the number of the elastic elements 303. Generally, the number of the magnetic limiting elements 304 is equal to the number of the elastic elements 303.

[0149] In some of the embodiments, the magnetic limiting element 304 is made of magnetic material, including but not limited to metal, such as iron.

[0150] In some of the embodiments, the magnetic limiting element 304 includes but is not limited to a magnetic limiting pin, a magnetic limiting protrusion, and the like.

[0151] The method of using this embodiment is as follows:

[0152] 1. Installation

[0153] The buffer element 201 is sleeved on the roller element 101;

[0154] The third limiting element 301 is sleeved on the end of the roller element 101. Since the magnetic limiting element 304 is a movable structure, when the third limiting element 301 is sleeved on the roller element 101 and moves along the axial direction of the roller element 101, the magnetic limiting element 304 does not protrude from the cavity element 302.

[0155] When the third limiting element 301 moves to a specific position, that is, the third limiting element 301 abuts against the end of the buffer element 201, the magnetic limiting element 304 protrudes from the cavity element 302 and is limitedly connected with the first limiting element 103 (similar to a snap-fit ​​structure), and the installation of the third limiting element 301 is completed;

[0156] (II) Disassembly

[0157] When the buffer element 201 is disassembled, the third limiting element 301 is attached by the magnetic structure, and the magnetic limiting element 304 is separated from the first limiting element 103 by the magnetic attraction property and recovered into the cavity element 302;

[0158] The third limiting element 301 is moved to separate the third limiting element 301 from the roller element 101, thereby completing the disassembly of the third limiting element 301;

[0159] The buffer element 201 and the roller element 101 may be separated.

[0160] The technical effects of this embodiment are as follows:

[0161] By using the magnetically detachable limiting unit and the roller unit to form a snap-fit ​​structure, the position of the buffer unit can be effectively limited, thereby avoiding relative displacement between the buffer unit and the roller unit during operation.

[0162] Example 4

[0163] This embodiment relates to the membrane production equipment of the present utility model.

[0164] An illustrative embodiment of the present invention is a film production device, comprising a roller structure as described in any one of Embodiments 1 to 3.

[0165] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A roller structure, characterized in that: include: A roller unit, wherein the roller unit is rotatably arranged; A buffer unit, wherein the buffer unit is sleeved on the roller unit; Wherein, the radial dimension of the middle portion of the roller structure is greater than the radial dimension of the end portion of the roller structure.

2. The roller structure according to claim 1, characterized in that The roller unit comprises: A roller element, wherein the roller element is rotatably arranged, wherein the radial dimension of the middle portion of the roller element is greater than the radial dimension of the end portion of the roller element or the radial dimension of the middle portion of the roller element is equal to the radial dimension of the end portion of the roller element; Two rotating elements are symmetrically arranged at two ends of the roller element and are rotatably connected to the device.

3. The roller structure according to claim 2, characterized in that The radial dimension of the roller element decreases from the middle to the end thereof.

4. The roller structure according to claim 2, characterized in that The roller unit further comprises: A plurality of first limiting elements are distributed at the end of the roller element and are connected to the buffer unit in a limiting manner so as to limit the position of the buffer unit.

5. The roller structure according to claim 1, characterized in that The buffer unit comprises: A buffer element is provided so as to be sleeved on the roller unit, wherein the radial dimension of the middle portion of the buffer element is greater than the radial dimension of the end portion of the buffer element or the radial dimension of the middle portion of the buffer element is equal to the radial dimension of the end portion of the buffer element.

6. The roller structure according to claim 5, characterized in that The radial dimension of the buffer element decreases from the middle to the end thereof.

7. The roller structure according to claim 5, characterized in that The buffer unit also includes: A plurality of second limiting elements are distributed at the ends of the buffer element and are connected to the roller unit in a limiting manner so as to limit the position of the buffer element.

8. The roller structure according to any one of claims 1 to 7, characterized in that: Also includes: A limiting unit is removably disposed at an end of the roller unit and is used to limit the position of the buffer unit.

9. The roller structure according to claim 8, characterized in that The limiting unit comprises: a third limiting element, wherein the third limiting element is removably disposed at an end of the roller unit; At least one cavity element, wherein the cavity element is disposed on the inner edge surface of the third limiting element; at least one elastic element, the elastic element being disposed inside the cavity element; At least one magnetic limiting element, which is movably arranged in the cavity element, wherein the first end of the magnetic limiting element is connected to the elastic element, and the second end of the magnetic limiting element is protruding from the cavity element and is limitedly connected to the roller unit, and is used for reciprocating along the axial direction of the cavity element under the action of the magnetic structure to protrude from or be received in the cavity element.

10. A membrane production device, characterized in that: include: The roller structure according to any one of claims 1 to 9.

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