OCA laminating machine

Abstract

The utility model relates to the technical field of laminating machines, and discloses an OCA (Optical Clear Adhesive) laminating machine, which comprises a machine body and a middle connecting strip, a laminating table is arranged on the machine body, the middle connecting strip is arranged above the laminating table in a lifting manner, two ends of the middle connecting strip are connected with side connecting strips, and the side connecting strips are higher than the middle connecting strip; the pre-pressing pieces are arranged below the side connecting strips, the two pre-pressing pieces can independently ascend and descend, and a bidirectional telescopic rod is installed between the two pre-pressing pieces through a connecting strip; through the arrangement of the pre-pressing piece and the first telescopic rod, the pressing roller on the pre-pressing strip on one side can conduct initial pressing positioning on one end before attaching, the alignment condition and foreign matter can be checked conveniently, adjustment is conducted in time, and defective products are reduced; secondly, an operator can accurately adjust the height of the pre-pressing strip before operation according to different attaching requirements, and pre-positioning is achieved; and the pressure can be independently adjusted aiming at the end part area in the laminating process, so that the laminating quality and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of laminating machine technology, and in particular to an OCA laminating machine. Background Technology

[0002] OCA optical adhesive is one of the raw materials for touch screens. It is made by creating a substrate-free optical acrylic pressure-sensitive adhesive and then attaching an optical release film to both the top and bottom layers to form a double-sided bonding tape. It is a double-sided adhesive tape without a substrate material. An OCA laminating machine is an automated device specifically designed for the precise application of optically transparent adhesive to touch screens or other display devices.

[0003] Traditional OCA laminating machines suffer from numerous problems during the lamination process. For instance, they lack an effective preliminary positioning and light pressure inspection mechanism before formal lamination. Inaccurate lamination positioning or the presence of foreign objects can easily lead to a large number of defective products. Furthermore, conventional lamination methods struggle to address the minute gaps between the screen and the cover plate. Traditional methods fail to evenly fill these gaps with OCA adhesive, resulting in insufficient bonding strength. This insufficient bonding strength directly leads to frequent occurrences of air bubbles and delamination. The presence of air bubbles affects the screen's visual effect and reduces its light transmittance. Utility Model Content

[0004] This invention proposes an OCA bonding machine to solve the problems of poor pre-pressure positioning and insufficient bonding strength in existing OCA bonding machines.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an OCA bonding machine, comprising a machine body, wherein a bonding table is provided on the machine body, and further comprising:

[0006] The middle connecting strip is vertically mounted above the bonding platform, and both ends of the middle connecting strip are connected to side connecting strips, which are higher than the middle connecting strip.

[0007] The pre-compression components are located below the side connecting strip. The two pre-compression components can be raised and lowered independently, and a bidirectional telescopic rod is installed between the two pre-compression components through the connecting strip to allow the two pre-compression components to move closer or further apart.

[0008] Preferably, the pre-compression component includes a pre-compression strip, and a pressure roller is rotatably mounted on the bottom end of the pre-compression strip.

[0009] Preferably, an electric heating block is installed inside the pre-pressing strip, and a heat-conducting sheet is provided between the electric heating block and the pressure roller.

[0010] Preferably, a first telescopic rod is vertically inserted through the side connecting strip, and the bottom end of the first telescopic rod is connected to the preload strip.

[0011] Preferably, a middle pressure strip is installed at the middle of the lower end face of the intermediate connecting strip, and a vertical second telescopic rod is also installed on the intermediate connecting strip via a mounting bracket.

[0012] Preferably, the side connecting strip has a through groove, and guide grooves are provided on both sides of the through groove. A guide block is fixed to the outer wall of the first telescopic rod, and the guide block is slidably engaged with the guide groove.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] (1) By setting up the pre-pressing component and the first telescopic rod, the pressure roller on one side of the pre-pressing strip can first press and position one end before bonding, which is convenient for checking the alignment and foreign objects, and timely adjustment to reduce defective products; secondly, the operator can accurately adjust the height of the pre-pressing strip before operation according to different bonding requirements to achieve pre-positioning; during bonding, the pressure can also be adjusted independently for the end area to improve bonding quality and efficiency.

[0015] (2) Improve bonding strength: The electric heating block in the pre-pressed part heats up, and the heat is transferred to the pressure roller through the heat conduction sheet to realize hot roller rolling bonding, which can fill the tiny gaps, enhance the bonding strength, and reduce the occurrence of bubbles and delamination. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0018] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram showing the combined state of the middle connecting strip, side connecting strip, and pre-compression component.

[0020] Figure 4 This is a schematic diagram showing the combined state of the side connecting strip, preload strip, and first telescopic rod.

[0021] Figure 5 This is a schematic diagram showing the combined state of the preload strip and the first telescopic rod;

[0022] Figure 6 This is a cross-sectional view of the preload strip.

[0023] In the diagram: 1. Machine body; 2. Lamination table; 3. Intermediate connecting strip; 4. Side connecting strip; 41. Through groove; 42. Guide groove; 5. Pre-pressing component; 51. Pre-pressing strip; 52. Pressure roller; 53. First telescopic rod; 54. Bidirectional telescopic rod; 55. Guide block; 56. Electric heating block; 57. Heat-conducting sheet; 6. Intermediate pressure strip; 7. Second telescopic rod. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-6 As shown, an OCA laminating machine includes a machine body 1 with a laminating table 2 on the machine body 1. The machine body 1 serves as the basic structure of the entire equipment. The outer shell is made of high-strength metal material, which has good stability and robustness and can effectively bear various stresses during the operation of the equipment. The laminating table 2 is the core area for realizing the laminating operation. The above is the prior art, and its specific internal structure and mechanical transmission and other detailed structures will not be described in detail here. This application also includes an intermediate connecting strip 3 and a pre-pressing component 5. The intermediate connecting strip 3 is vertically and flexibly positioned above the bonding table 2, and both ends of the intermediate connecting strip 3 are connected to side connecting strips 4. The side connecting strips 4 are higher than the intermediate connecting strip 3. A middle pressure strip 6 is installed at the middle of the lower end face of the intermediate connecting strip 3, and a vertical second telescopic rod 7 is also installed on the intermediate connecting strip 3 via a mounting bracket. The second telescopic rod 7 is preferably an electric telescopic rod, and the mounting bracket can move back and forth along the length direction of the upper end face of the machine body 1. The pre-pressing component 5 is positioned below the side connecting strips 4, and each side connecting strip 4 corresponds to one pre-pressing component 5. The two pre-pressing components 5 can be raised and lowered independently, and a bidirectional telescopic rod 54 is installed between the two pre-pressing components 5 via a connecting strip to allow the two pre-pressing components 5 to move closer or further apart.

[0026] Among them, see Figures 3-6 As shown, the pre-pressing component 5 includes a pre-pressing strip 51, with a pressure roller 52 rotatably mounted at the bottom end of the pre-pressing strip 51. An electric heating block 56 is installed inside the pre-pressing strip 51, and a heat-conducting sheet 57 is provided between the electric heating block 56 and the pressure roller 52. During bonding, the pressure roller 52 on one side of the pre-pressing strip 51 can be used to initially press one end for preliminary positioning and light pressure bonding. The alignment of the two and the presence of foreign objects can be checked. If there are any problems, adjustments can be made in time to avoid the production of defective products caused by direct formal bonding. After the inspection is in place, the pre-pressing strip 51 and the intermediate pressure strip 6 can be used to achieve rapid bonding.

[0027] During the bonding process, an electric heating block 56 can be used to raise the temperature, transferring heat to the pressure roller 52 via a heat-conducting sheet 57. This heated roller application effectively fills the tiny gaps between the screen and cover glass, improving bonding strength and reducing air bubbles and delamination. Furthermore, because the OCA adhesive exhibits better adhesion when heated, it bonds more gently to both the screen and cover glass, minimizing stress during bonding. This helps prevent screen cracks and cover glass breakage caused by stress concentration.

[0028] See Figures 3-5 As shown, a first telescopic rod 53 is vertically inserted through the side connecting strip 4. The first telescopic rod 53 is preferably an electric telescopic rod. The bottom end of the first telescopic rod 53 is connected to the pre-pressure strip 51. The first telescopic rod 53 can drive the pre-pressure strip 51 to rise and fall, so as to realize the independent adjustment of the end pre-pressure strip 51. Before the bonding operation begins, the operator can flexibly operate the first telescopic rod 53 according to different bonding materials, shapes and process requirements to adjust the pre-pressure strip 51 to a suitable height, so as to achieve precise pre-positioning of the bonding part and ensure that the subsequent bonding process can be carried out smoothly. During the bonding process, for some end areas that need to be treated in particular, the pressure on the end can be increased by independently adjusting the pre-pressure strip 51, so that the bonding material is tightly bonded at the end, effectively avoiding product quality problems caused by poor bonding, greatly improving the quality and efficiency of the bonding operation, and meeting diverse bonding needs.

[0029] See Figures 4-5 As shown, a through groove 41 is provided on the side connecting strip 4, and guide grooves 42 are provided on both sides of the through groove 41. A guide block 55 is fixed on the outer wall of the first telescopic rod 53. The guide block 55 is slidably engaged with the guide groove 42. As mentioned above, when the pre-compression strip 51 is rolled using the bidirectional telescopic rod 54, the guide block 55 can move linearly along the guide groove 42, which limits the possible deviation, shaking or other unstable phenomena that may occur in the pre-compression strip 51 during the movement, thereby significantly improving the stability of the movement of the pre-compression strip 51 and ensuring that the rolling operation can be completed efficiently and accurately.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An OCA bonding machine, comprising a machine body (1), wherein a bonding table (2) is provided on the machine body (1), characterized in that, It also includes: The middle connecting strip (3) is vertically mounted above the bonding platform (2), and both ends of the middle connecting strip (3) are connected to side connecting strips (4), which are higher than the middle connecting strip (3). The pre-compression component (5) is located below the side connecting strip (4). The two pre-compression components (5) can be raised and lowered independently, and a bidirectional telescopic rod (54) is installed between the two pre-compression components (5) through the connecting strip to allow the two pre-compression components (5) to move closer or further apart.

2. An OCA bonding machine according to claim 1, characterized in that: The pre-compression component (5) includes a pre-compression strip (51), and a pressure roller (52) is rotatably mounted on the bottom end of the pre-compression strip (51).

3. An OCA bonding machine according to claim 2, characterized in that: An electric heating block (56) is installed inside the pre-pressing strip (51), and a heat-conducting plate (57) is provided between the electric heating block (56) and the pressure roller (52).

4. An OCA bonding machine according to claim 2, characterized in that: A first telescopic rod (53) is vertically inserted through the side connecting strip (4), and the bottom end of the first telescopic rod (53) is connected to the pre-compression strip (51).

5. An OCA bonding machine according to claim 4, characterized in that: A middle pressure strip (6) is installed at the middle of the lower end face of the intermediate connecting strip (3), and a vertical second telescopic rod (7) is also installed on the intermediate connecting strip (3) through a mounting bracket.

6. An OCA bonding machine according to claim 4, characterized in that: The side connecting strip (4) has a through groove (41), and guide grooves (42) are provided on both sides of the through groove (41). A guide block (55) is fixed on the outer wall of the first telescopic rod (53), and the guide block (55) slides in the guide groove (42).

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