Extrusion device for conductive adhesive film

Abstract

The utility model provides an extrusion device for a conductive adhesive film, and particularly relates to the field of conductive adhesive film production, the extrusion device comprises support beams which are oppositely arranged, and a first extrusion roller and a second extrusion roller are arranged between the support beams; rotating shafts are respectively arranged at two ends of the first extrusion roller and the second extrusion roller, and rolling bearings are arranged outside the rotating shafts; first guide grooves which are symmetrical up and down are formed in the outer side of the supporting beam; the supporting beam is provided with vertically-symmetrical through holes, connecting blocks are arranged in the through holes, and the rolling bearings penetrate through the through holes to be connected with the connecting blocks. A first shaft sleeve is arranged at the upper end of the connecting block and located in the first guide groove, and the length of the first shaft sleeve is smaller than that of the first guide groove. The lower end of the first spring is embedded into the first shaft sleeve; the upper end of the first spring is positioned in the first guide groove; and a first sealing plate for sealing the first guide groove is arranged on the outer side of the first guide groove. According to the utility model, the problem of non-uniform stress at two ends of the conductive adhesive film caused by rotation synchronization deviation can be relieved, and the quality of the conductive adhesive film can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the production field of conductive adhesive film, and specifically relates to an extrusion device for conductive adhesive film. BACKGROUND

[0002] Conductive adhesive film is a functional material with the functions of bonding, conducting and insulating, and can be formed through die cutting or laser cutting, has high peel strength, excellent conductivity and electromagnetic shielding effectiveness. Conductive adhesive film is widely used in the conductive connection between PCB backplate metals, the connection between FPC grounding metal reinforcements and the like;

[0003] In order to ensure the firmness and flatness between the layers of conductive adhesive film, the conductive adhesive film needs to be subjected to extrusion operation, and the existing extrusion device generally comprises two extrusion rollers arranged above and below; the conductive adhesive film is subjected to extrusion operation through the gap between the extrusion rollers; since there are unwinding rollers and winding rollers on both sides of the extrusion rollers, once the unwinding rollers and winding rollers are synchronously deviated, the conductive adhesive film will be pulled, but the existing extrusion rollers are mostly in rigid contact, cannot buffer the synchronous deviation of the unwinding rollers and winding rollers, result in the uneven force on both ends of the conductive adhesive film, and further result in that the conductive adhesive film is pulled at both ends, thereby affecting the quality of the conductive adhesive film.

[0004] In view of the above problems, the present application provides an extrusion device for conductive adhesive film, which can alleviate the uneven force on both ends of the conductive adhesive film caused by the rotational synchronous deviation, and is beneficial to improve the quality of the conductive adhesive film. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an extrusion device for conductive adhesive film, which can alleviate the uneven force on both ends of the conductive adhesive film caused by the rotational synchronous deviation, and is beneficial to improve the quality of the conductive adhesive film.

[0006] The utility model provides the following technical scheme:

[0007] An extrusion device for conductive adhesive film comprises opposite support beams, and first and second extrusion rollers arranged from top to bottom between the support beams;

[0008] The first and second extrusion rollers are respectively provided with rotating shafts, and the rotating shafts are externally provided with rolling bearings;

[0009] The outer side wall of the support beam is provided with first guide grooves which are symmetrically arranged in the vertical direction;

[0010] The support beam is provided with through holes which are symmetrically arranged in the vertical direction, and the through holes are provided with connecting blocks, and the rolling bearings pass through the through holes and are connected with the connecting blocks;

[0011] The upper end of the connecting block is provided with a first shaft sleeve, the first shaft sleeve is located in the first guide groove, and the length of the first shaft sleeve is less than the length of the first guide groove.

[0012] The lower end of the first spring is embedded in the first shaft sleeve, and the upper end of the first spring is located in the first guide groove;

[0013] The first guide groove is provided with a first sealing plate outside the first guide groove for sealing the first guide groove;

[0014] Preferably, the second shaft sleeve and the third shaft sleeve are symmetrically arranged on the two sides of the connecting block along the horizontal direction;

[0015] The support beam is provided with a second guide groove and a third guide groove matched with the second shaft sleeve and the third shaft sleeve;

[0016] The second shaft sleeve and the third shaft sleeve are respectively provided with a second spring and a third spring;

[0017] The width of the second guide groove and the third guide groove is greater than the diameter of the second shaft sleeve and the third shaft sleeve;

[0018] The second guide groove and the third guide groove are provided with a second sealing plate and a third sealing plate outside the second guide groove and the third guide groove for sealing the second guide groove and the third guide groove.

[0019] Preferably, the first sealing plate, the second sealing plate and the third sealing plate are connected with the side wall of the support beam through bolts.

[0020] Preferably, the side wall of the first sealing plate is provided with a sealing block with a semicircular cross section, the sealing block is embedded in the first guide groove, and the sealing block is surrounded outside the first shaft sleeve; the second sealing plate and the third sealing plate are the same as the first sealing plate in structure.

[0021] Preferably, the connecting block, the first shaft sleeve, the second shaft sleeve and the third shaft sleeve are integrally formed.

[0022] Preferably, the groove bottom of the first guide groove, the second guide groove and the third guide groove is matched with the external contour of the first shaft sleeve, the second shaft sleeve and the third shaft sleeve.

[0023] Preferably, the first sealing plate and the sealing block are integrally formed.

[0024] Preferably, the two ends of the first extrusion roller are provided with connecting plates, the connecting plates are connected with the first extrusion roller through bolts, and the end of the rotating shaft is connected with the connecting plates.

[0025] Preferably, the end of the rotating shaft and the connecting plate are integrally formed.

[0026] The utility model discloses the beneficial effect that:

[0027] The device can relieve the problem of uneven stress on the both ends of the conductive adhesive film caused by the rotation synchronization deviation through the buffering of the spring and the guiding effect of the shaft sleeve, and is beneficial to improving the quality of the conductive adhesive film.

[0028] The device can improve the stability of buffering and guiding through multiple buffering and guiding. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of the specification, illustrate embodiments of the present application, and explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0030] Figure 1 is a whole device diagram;

[0031] Figure 2 is an exploded view of the device;

[0032] Figure 3 is a partial view of the device;

[0033] Figure 4 is a structure diagram of the second embodiment;

[0034] In the drawings, the following marks are marked: 1 support beam, 2 first extrusion roller, 3 second extrusion roller, 4 rotating shaft, 5 rolling bearing, 6 connecting block, 7 through hole, 8 first guiding groove, 9 second guiding groove, 10 third guiding groove, 11 first shaft sleeve, 12 second shaft sleeve, 13 third shaft sleeve, 14 first sealing plate, 15 second sealing plate, 16 third sealing plate, 17 first spring, 18 second spring, 19 third spring, 20 sealing block, 21 connecting plate. DETAILED DESCRIPTION EMBODIMENT

[0035] As Figures 1 to 3 An extrusion device of conductive adhesive film, comprising support beams 1 arranged oppositely, first extrusion rollers 2 and second extrusion rollers 3 are arranged from top to bottom between the support beams 1; the support beams 1 are of a traditional structure, used for supporting the first extrusion rollers 2 and the second extrusion rollers 3; the first extrusion rollers 2 and the second extrusion rollers 3 are respectively provided with rotating shafts 4 at both ends, and the rotating shafts 4 are provided with rolling bearings 5 outside; the rotating shafts 4 and the rolling bearings 5 can adopt interference fit mode, as long as they can be connected firmly; the outer side wall of the support beams 1 is provided with first guiding grooves 8 which are symmetrical up and down in the vertical direction, the first guiding grooves 8 do not penetrate the side wall of the support beams 1, the first guiding grooves 8 are groove bodies with side openings, and the opening direction is towards the outside, that is, away from the side of the extrusion rollers, so that it can be ensured that one side of the first extrusion rollers 2 and the second extrusion rollers 3 is not interfered by other accessory parts, and it is beneficial to ensure smooth rotation of the first extrusion rollers 2 and the second extrusion rollers 3;

[0036] The support beams 1 are provided with through holes 7 which are symmetrical up and down, the shape of the through holes 7 is set according to actual requirements, and reference can also be made to the attached Figure 1 and 2The structure of the application is characterized in that the through hole 7 is provided with a connecting block 6, the rolling bearing 5 passes through the through hole 7 and is connected with the connecting block 6, the connecting block 6 is connected with the rolling bearing 5 in a traditional embedded manner or other traditional connection manner which can be firmly connected; the upper end of the connecting block 6 is provided with a first shaft sleeve 11, the first shaft sleeve 11 is located in the first guide groove 8, and the length of the first shaft sleeve 11 is less than the length of the first guide groove 8; the lower end of the first spring 17 is embedded in the first shaft sleeve 11, and the upper end of the first spring 17 is located in the first guide groove 8; the first spring 17 is limited and guided by the first shaft sleeve 11, so that the first spring 17 is contracted through buffering in the first guide groove 8, the rotation synchronization deviation is relieved, the problem of uneven stress on both ends of the conductive adhesive film is solved, and the quality of the conductive adhesive film is improved.

[0037] The outer side of the first guide groove 8 is provided with a first sealing plate 14 which seals the first guide groove 8 and limits the first shaft sleeve 11 in the first guide groove 8; in order to further improve the buffering performance, the second shaft sleeve 12 and the third shaft sleeve 13 are symmetrically arranged on both sides of the connecting block 6 along the horizontal direction; the connecting block 6, the first shaft sleeve 11, the second shaft sleeve 12 and the third shaft sleeve 13 are integrally formed, so that the strength of the device is improved.

[0038] The supporting beam 1 is provided with a second guide groove 9 and a third guide groove 10 which are matched with the second shaft sleeve 12 and the third shaft sleeve 13; the second shaft sleeve 12 and the third shaft sleeve 13 are respectively provided with a second spring 18 and a third spring 19; in this way, the buffering effect in the horizontal direction and the vertical direction can be achieved; the width of the second guide groove 9 and the third guide groove 10 is greater than the diameter of the second shaft sleeve 12 and the third shaft sleeve 13, and the specific size can be selected as required, but it should not be too large; in this way, the buffering displacement of the first extrusion roller 2 and the second extrusion roller 3 in the vertical direction can be ensured; the outer side of the second guide groove 9 and the third guide groove 10 is provided with a second sealing plate 15 and a third sealing plate 16 which seal the second guide groove 9 and the third guide groove 10 and limit the second shaft sleeve 12 and the third shaft sleeve 13.

[0039] To ensure ease of disassembly, the first, second, and third sealing plates 14, 15, and 16 are bolted to the sidewalls of the support beam 1. The sidewalls of the first sealing plate 14 are equipped with a semicircular sealing block 20, which is embedded in the first guide groove 8 and surrounds the first sleeve 11, ensuring the stability of the first sleeve 11. The first sealing plate 14 and the sealing block 20 are integrally formed, enhancing the strength of the assembly. The second and third sealing plates 15, 16 share the same structure as the first sealing plate 14. The bottoms of the first, second, and third guide grooves 8, 9, and 10 match the outer contours of the first, second, and third sleeves 11, 12, and 13, further enhancing the stability of the first sleeve 11's cushioning. To ensure proper cushioning of the first sleeve 11, it should not be directly clamped or locked. Adding lubricant, slightly increasing or reducing the diameter of the accessory can be used to prevent the first sleeve 11 from clamping or locking. Example

[0040] On the basis of Example 1, Figure 4 To facilitate assembly and disassembly, connecting plates 21 are installed at both ends of the first squeeze roller 2. These plates are bolted to the first squeeze roller 2. The ends of the rotating shaft 4 are connected to the connecting plates 21. The ends of the rotating shaft 4 and the connecting plates 21 are integrally formed, enhancing strength and connection reliability. The second squeeze roller 3 and the first squeeze roller 2 share the same structure, further enhancing ease of assembly and disassembly.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A conductive film extrusion device, characterized in that: The support beam is arranged opposite to the support beam, and the first extrusion roller and the second extrusion roller are arranged between the support beams from top to bottom. The first extrusion roller and the second extrusion roller are respectively provided with rotating shafts, and the rotating shafts are externally provided with rolling bearings. The outer side wall of the support beam is provided with first guide grooves which are symmetrically arranged in the vertical direction. The support beam is provided with through holes which are symmetrically arranged in the vertical direction, and the through holes are provided with connecting blocks, and the rolling bearings pass through the through holes and are connected with the connecting blocks. The upper end of the connecting block is provided with a first shaft sleeve, the first shaft sleeve is located in the first guide groove, and the length of the first shaft sleeve is less than the length of the first guide groove. The lower end of the first spring is embedded in the first shaft sleeve, and the upper end of the first spring is located in the first guide groove. The outer side of the first guide groove is provided with a first sealing plate for sealing the first guide groove.

2. The extrusion device of the conductive adhesive film according to claim 1, wherein: The connecting block is provided with second shaft sleeves and third shaft sleeves which are symmetrically arranged in the horizontal direction. The support beam is provided with second guide grooves and third guide grooves which are matched with the second shaft sleeves and the third shaft sleeves. The second shaft sleeves and the third shaft sleeves are respectively provided with second springs and third springs. The widths of the second guide grooves and the third guide grooves are greater than the diameters of the second shaft sleeves and the third shaft sleeves. The outer sides of the second guide grooves and the third guide grooves are provided with second sealing plates and third sealing plates for sealing the second guide grooves and the third guide grooves.

3. The extrusion device of the conductive adhesive film according to claim 2, wherein: The first sealing plate, the second sealing plate and the third sealing plate are connected with the side wall of the support beam through bolts.

4. The extrusion device of the conductive adhesive film according to claim 3, wherein: The side wall of the first sealing plate is provided with a sealing block which has a semicircular cross section, the sealing block is embedded in the first guide groove, and the sealing block is surrounded by the first shaft sleeve.

5. The extrusion device of a conductive adhesive film according to claim 4, wherein: The second sealing plate and the third sealing plate have the same structure as the first sealing plate.

6. The extrusion device of a conductive adhesive film according to claim 5, wherein: The connecting block, the first shaft sleeve, the second shaft sleeve and the third shaft sleeve are integrally formed.

7. The extrusion device of a conductive adhesive film according to claim 6, wherein: The groove bottoms of the first guide groove, the second guide groove and the third guide groove are matched with the external contours of the first shaft sleeve, the second shaft sleeve and the third shaft sleeve.

8. The extrusion device of a conductive adhesive film according to claim 7, wherein: The first sealing plate and the sealing block are integrally formed.

9. The extrusion device of a conductive adhesive film according to claim 8, wherein: The first extrusion roller is provided with connecting plates at both ends, the connecting plates are connected with the first extrusion roller through bolts, and the end portions of the rotating shafts are connected with the connecting plates. The end portions of the rotating shafts and the connecting plates are integrally formed.

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