An active embossing mechanism

Abstract

The present invention relates to the technical field of photovoltaic film manufacturing, and in particular to an active embossing mechanism, comprising an embossing rubber roller and an embossing steel roller arranged in parallel, a variable gap for the photovoltaic film to pass through is arranged between the two, an active pressure shaft group is connected to the center of the embossing rubber roller, the active pressure shaft group comprises an innermost curved fixed shaft, the curved fixed shaft comprises a lateral fixed column and a plurality of parallel positive axis wheels passed by the lateral fixed column, the outer periphery of the positive axis wheel is connected to a positive axis sleeve shaft through a bearing, the outer periphery of the lateral fixed column is connected to a movable block penetrating the wall of the positive axis sleeve shaft through a connecting handle, the connecting handle can rotate based on the axis of the lateral fixed column, and the movable block can be penetrated in the wall of the positive axis sleeve shaft and move linearly; an axis shell with the same rotating axis is arranged on the outer periphery of the positive axis sleeve shaft, the two are fixedly connected by a supporting ring sheet, and the lateral fixed column is arranged at the position closest to the embossing steel roller; the active embossing mechanism disclosed by the present invention makes the pressure of the embossing rubber roller toward the embossing steel roller at various locations consistent and adjustable, so as to ensure uniform embossing thickness.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic adhesive film manufacturing, and in particular to an active embossing mechanism. Background Art

[0002] The rubber roller is a roll-shaped product made of metal or other materials as the core and rubber covered by vulcanization. In the photovoltaic film casting process, embossed rubber rollers and embossed steel rollers are used to press the patterns of the photovoltaic film and perform preliminary cooling and shaping. The photovoltaic film surface is pressed by pattern pressing to improve the adhesion between the films and obtain a certain apparent thickness. The depth of the film pattern needs to be adjusted by the gap between the embossed rubber roller and the embossed steel roller. The embossed rubber roller has no drive motor and it rotates passively under the action of the embossed steel roller, thereby performing continuous embossing.

[0003] In the prior art, the embossing rubber roller is pushed by a pneumatic pump at both ends to fit with the embossing steel roller to emboss the pattern. The gap between the two rollers is adjusted by the gap control bolt between the rollers, which determines the depth of the embossing and thus controls the apparent thickness of the film. The embossing rubber roller has a flatness problem due to the soft colloid on its outer surface and the long roller body, which leads to uneven embossing of the photovoltaic film. This is particularly obvious when the embossing gap is small, which makes it difficult to meet the trend of thinning photovoltaic encapsulation films. Summary of the invention

[0004] The purpose of the present invention is to provide an active embossing mechanism, which can make the opposing pressure on the long roller body uniform by technical means, so as to ensure the embossing effect on the photovoltaic film.

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

[0006] An active embossing mechanism, comprising an embossing rubber roller and an embossing steel roller arranged in parallel, with a variable gap between the two for the passage of a photovoltaic adhesive film, characterized in that: an active pressure shaft group is connected to the center of the embossing rubber roller, the active pressure shaft group comprises a curved fixed shaft located at the innermost position, the curved fixed shaft comprises a lateral fixed column and a plurality of parallel positive axis wheels passing through the lateral fixed column, the outer periphery of the positive axis wheel is connected to a positive axis sleeve shaft through a bearing, the outer periphery of the lateral fixed column is connected to a movable block penetrating the wall of the positive axis sleeve shaft through a connecting handle, the connecting handle can rotate based on the axis of the lateral fixed column, and the movable block can be linearly moved by passing through the wall of the positive axis sleeve shaft;

[0007] The outer periphery of the positive axis sleeve is provided with an axis shell co-rotating with the axis, and the two are fixedly connected by a supporting ring sheet, and the side fixed column is arranged at the position closest to the embossed steel roller;

[0008] Based on the front view angle of the embossed rubber roller end, the product relationship between the angle α between two adjacent connecting handles and the number δ of the movable blocks is: α×δ=360°, and the number δ of the movable blocks is 6 to 20.

[0009] Furthermore, the positive axis sleeve shaft is provided with a sliding hole penetrating through the wall thereof, and the movable blocks are one-to-one inserted into the sliding hole and can move linearly therewith.

[0010] Furthermore, the connecting handle is hinged to the movable block.

[0011] Furthermore, the numbers of the positive axis center wheel, the connecting handle and the movable block correspond one to one.

[0012] Furthermore, the movable block does not directly contact the shaft housing and the supporting ring sheet, and the movable block always moves within the inner periphery of the inner wall of the shaft housing.

[0013] Furthermore, the central axes of the lateral fixed column and the positive axis center wheel are parallel, and the central axes of all the positive axis center wheels coincide.

[0014] Furthermore, the outer periphery of the shaft housing is penetrated through the center of the embossed rubber roller.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention discloses an active embossing mechanism, which is arranged with a staggered central axis. The active pressure shaft group inside the rubber roller rotates to generate centrifugal force, so that the pressure of the embossing rubber roller toward the embossing steel roller at various locations is kept consistent, instead of the compression cylinder providing pressure at both ends of the embossing rubber roller, thereby ensuring the uniformity of the embossing thickness, especially the corresponding part of the middle section of the long roller body. The centrifugal force can be controlled by the rotation speed of the active pressure shaft group, which is convenient to adjust and greatly improves the stability of the pressure required for embossing, so that the embossed photovoltaic encapsulation film has a more uniform apparent thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the side structure of

[0019] Figure 3 It is a partial cross-sectional structural schematic diagram of the present invention;

[0020] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0021] Figure 5 This is a schematic diagram of the connection between the curved fixed shaft and the movable block in the present invention;

[0022] Figure 6 for Figure 5 A schematic diagram of the side structure of

[0023] Figure 7 This is a schematic diagram of the connection between the positive axis sleeve shaft and the movable block in the present invention;

[0024] In the figure: 1, active pressure shaft group; 1a, curved fixed shaft; 1a-1, lateral fixed column; 1a-2, positive axis wheel; 1b, bearing; 1c, positive axis sleeve shaft; 1c-1, sliding hole; 1d, connecting handle; 1e, movable block; 1f, shaft housing; 1g, supporting ring; 2, embossed rubber roller; 3, embossed steel roller. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be noted that if the terms "upper", "lower", "middle", "inner" and "outer" are used to indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the technical solutions of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] At present, the photovoltaic film casting process embosses the film through an embossed rubber roller 2 and an embossed steel roller 3. The embossed steel roller 3 and the surface of the rubber roller are provided with a pattern structure. The embossed steel roller 3 is driven by a servo motor as an active wheel to exert traction on the film, and the embossed rubber roller 2 is a driven wheel with a rotation speed range of 18 to 26 r / s.

[0027] See also Figure 1 to Figure 7 An active embossing mechanism comprises an embossing rubber roller 2 and an embossing steel roller 3 arranged in parallel, a variable gap for the photovoltaic rubber film to pass through is arranged between the two, an active pressure shaft group 1 is connected to the center of the embossing rubber roller 2, the active pressure shaft group 1 comprises a curved fixed shaft 1a located at the innermost position, the curved fixed shaft 1a comprises a lateral fixed column 1a-1 and a plurality of parallel positive axis wheels 1a-2 passing through the lateral fixed column 1a-1, the outer periphery of the positive axis wheel 1a-2 is connected to a positive axis sleeve shaft 1c through a bearing 1b, the outer periphery of the lateral fixed column 1a-1 is connected to a movable block 1e passing through the wall of the positive axis sleeve shaft 1c through a connecting handle 1d, the connecting handle 1d is hinged to the movable block 1e, the connecting handle 1d can rotate based on the axis of the lateral fixed column 1a-1, and the movable block 1e can pass through the wall of the positive axis sleeve shaft 1c and move linearly;

[0028] The outer periphery of the positive axis sleeve 1c is provided with an axis shell 1f with the same rotation axis, and the two are fixedly connected by a supporting ring sheet 1g. The lateral fixed column 1a-1 is arranged at the closest position to the embossed steel roller 3 to determine the pressure toward the embossed steel roller 3. The outer periphery of the axis shell 1f is passed through the center of the embossed rubber roller 2.

[0029] Based on the front view angle of the embossed rubber roller 2, the product relationship between the angle α between two adjacent connecting handles 1d and the number δ of the movable blocks 1e is: α×δ=360°, and the number δ of the movable blocks 1e is 6 to 20.

[0030] Specifically, the central axes of the lateral fixed column 1a-1 and the main axis wheel 1a-2 are parallel, the main axis wheel 1a-2 is evenly and equidistantly arranged along the lateral fixed column 1a-1, the central axes of the main axis wheel 1a-2 coincide, and the main axis sleeve shaft 1c with an outer diameter of 200 mm is provided with a sliding hole 1c-1 penetrating its wall, and the movable blocks 1e are one-to-one penetrated in the sliding hole 1c-1 and can move linearly based on it; the numbers of the main axis wheel 1a-2, the connecting handle 1d and the movable blocks 1e correspond one-to-one; the movable block 1e does not directly contact the shaft housing 1f and the supporting ring 1g, and the movable block 1e always moves within the inner wall of the shaft housing 1f.

[0031] There are two sets of shafts inside the embossing rubber roller 2, which are divided into a curved fixed shaft 1a and a positive axis sleeve shaft 1c. The position of the lateral fixed column 1a-1 in the curved fixed shaft 1a determines the direction of pressure generated when the embossing rubber roller 2 rotates during operation. Due to the staggered parallel central axis setting, the curved fixed shaft 1a is fixed, and the eccentricity is generated by the movable block 1e moving based on the curved fixed shaft 1a. The movable block 1e is connected to the curved fixed shaft 1a by a connecting handle 1d. When the movable block 1e rotates with the positive axis sleeve 1c to a position close to the lateral fixed column 1a-1, the movable block 1e is away from the central axis position of the positive axis sleeve 1c, and the centrifugal force it is subjected to increases. When the movable block 1e rotates with the positive axis sleeve 1c to a position away from the lateral fixed column 1a-1, the movable block 1e is close to the central axis position of the positive axis sleeve 1c, and the centrifugal force it is subjected to decreases. Therefore, the centrifugal force can always be directed to the same position to generate directional pressure. At the same time, the opening of the movable block 1e in the positive axis sleeve 1c needs to be set opposite to each other to eliminate the force generated by the rubber roller in the up and down directions.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. For ordinary technicians in this field, various changes, modifications or additions without departing from the concept of the present invention should all be covered within the protection scope of the present invention.

Claims

1. An active embossing mechanism, comprising an embossing rubber roller (2) and an embossing steel roller (3) arranged in parallel, with a variable gap provided between the two for the photovoltaic adhesive film to pass through, characterized in that: The center of the embossed rubber roller (2) is connected to an active pressure shaft group (1), the active pressure shaft group (1) includes a curved fixed shaft (1a) located at the innermost position, the curved fixed shaft (1a) includes a lateral fixed column (1a-1) and a plurality of parallel positive axis wheels (1a-2) passing through the lateral fixed column (1a-1), the outer periphery of the positive axis wheel (1a-2) is connected to a positive axis sleeve shaft (1c) through a bearing (1b), the outer periphery of the lateral fixed column (1a-1) is connected to a movable block (1e) passing through the wall of the positive axis sleeve shaft (1c) through a connecting handle (1d), the connecting handle (1d) can rotate based on the axis of the lateral fixed column (1a-1), and the movable block (1e) can be inserted into the wall of the positive axis sleeve shaft (1c) and move linearly; The outer periphery of the positive axis sleeve (1c) is provided with an axis shell (1f) having the same rotation axis as the axis, and the two are fixedly connected via a support ring sheet (1g), and the lateral fixed column (1a-1) is arranged at the position closest to the embossed steel roller (3); the positive axis sleeve (1c) is provided with a sliding hole (1c-1) penetrating the wall thereof, and the movable block (1e) is one-to-one inserted into the sliding hole (1c-1) and can move linearly therewith; Based on the end-side frontal viewing angle of the embossed rubber roller (2), the product relationship between the angle α between two adjacent connecting handles (1d) and the number δ of the movable blocks (1e) is: α×δ=360°, and the number δ of the movable blocks (1e) is 6 to 20.

2. An active embossing mechanism according to claim 1, characterized in that: The connecting handle (1d) is hinged to the movable block (1e).

3. An active embossing mechanism according to claim 2, characterized in that: The numbers of the positive axis center wheel (1a-2), the connecting handle (1d) and the movable block (1e) correspond to each other.

4. An active embossing mechanism according to claim 3, characterized in that: The movable block (1e) does not directly contact the shaft housing (1f) and the supporting ring sheet (1g), and the movable block (1e) always moves within the inner periphery of the inner wall of the shaft housing (1f).

5. An active embossing mechanism according to claim 4, characterized in that: The central axes of the lateral fixed column (1a-1) and the positive axis center wheel (1a-2) are parallel, and the central axes of all the positive axis center wheels (1a-2) coincide.

6. An active embossing mechanism according to claim 1, characterized in that: The outer periphery of the shaft housing (1f) is passed through the center of the embossed rubber roller (2).

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