A pneumatic bidirectional anti-folding device for the production of copper clad laminate bonding sheets

Abstract

This utility model discloses a pneumatic bidirectional anti-folding device for the production of copper-clad laminate bonding sheets. It includes a bidirectional cylinder assembly that achieves combined vertical and horizontal movements. The cylinder body of the bidirectional cylinder assembly has multiple independently controllable air holes. By controlling the opening and closing of different air holes, the piston extension speed and force of the bidirectional cylinder assembly are adjusted. The output end of the bidirectional cylinder assembly is equipped with a horizontal scraping component, which includes a scraper carrier on which a scraper blade is detachably mounted. The bidirectional cylinder assembly, which achieves combined vertical and horizontal movements through multi-air hole control, effectively solves the problems of edge warping and overall folding in the production of thin bonding sheets, thus improving product quality.

Description

Technical Field

[0001] This utility model belongs to the field of copper clad laminate production technology, and in particular to the production and manufacturing process of thin adhesive sheets. It relates to a pneumatic bidirectional anti-folding device for the production of copper clad laminate adhesive sheets. Background Technology

[0002] In the production of thin bonding sheets for copper clad laminates, ensuring material flatness and preventing folding are key factors in improving product quality. With the increasing performance requirements of the electronics industry for copper clad laminates, traditional production technologies can no longer meet the demands for high precision and efficiency. Therefore, effectively solving the problems of edge warping and overall folding in the production of thin bonding sheets has become a significant challenge in the field of copper clad laminate manufacturing technology.

[0003] Currently, the main measures taken to solve the problems of edge warping and folding in the production of thin adhesive sheets include using traditional cylinders for unidirectional bonding or scraping, and manual adjustment and monitoring of the production process. For example, unidirectional cylinder action can achieve initial bonding of the adhesive sheet, but this method cannot effectively solve the problems of edge warping and overall folding; while manual adjustment and monitoring can handle some special cases, it is inefficient and difficult to guarantee consistency and stability.

[0004] Existing technical problems: Although existing technologies have improved the production quality of thin bonding sheets to some extent, some problems and shortcomings still exist. First, the existing cylinder structure design is simple, only enabling unidirectional movement and unable to simultaneously perform vertical bonding and horizontal scraping, making it difficult to completely solve the problems of edge warping and overall folding. Second, manual adjustment and monitoring methods are inefficient and greatly affected by human factors, making it difficult to achieve precise control and large-scale production. In addition, existing technical solutions have certain limitations in practical applications, making it difficult to adapt to bonding sheets of different materials and thicknesses, as well as the anti-folding requirements under different production conditions. Utility Model Content

[0005] The purpose of this invention is to provide a pneumatic bidirectional anti-folding device for the production of copper clad laminate bonding sheets, which solves the problems of edge warping and overall folding that occur during the production of thin bonding sheets.

[0006] The objective of this utility model is achieved through the following technical solution: A pneumatic bidirectional anti-folding device for the production of copper clad laminate bonding sheets includes a bidirectional cylinder assembly that realizes vertical and horizontal compound actions. The cylinder body of the bidirectional cylinder assembly is provided with multiple independently controllable air holes. By controlling the opening and closing of different air holes, the piston extension speed and force of the bidirectional cylinder assembly can be adjusted. The output end of the bidirectional cylinder assembly is provided with a horizontal scraping component, which includes a scraper carrier on which a scraper is detachably mounted.

[0007] Specifically, the bidirectional cylinder assembly consists of a vertical cylinder and a horizontal cylinder. The cylinder body of the horizontal cylinder is fixedly connected to the piston of the vertical cylinder 11 via a connector, and the piston end of the horizontal cylinder is fixedly connected to the scraper carrier. The vertical cylinder provides the vertical application action, while the horizontal cylinder provides the horizontal scraping action. Working simultaneously in three-dimensional space, it can effectively and thoroughly solve the problems of edge warping and overall creases.

[0008] As a further improvement of this utility model, the scraper carrier and the scraper are connected by a magnetic quick-release structure.

[0009] As a further improvement of this utility model, the working surface of the scraper is provided with biomimetic micro-protrusion texture.

[0010] As a further improvement of this utility model, the biomimetic micro-protrusion texture is a shark skin-like rib structure.

[0011] As a further improvement of this utility model, the piston of the bidirectional cylinder assembly is made of a gradient hardness composite material.

[0012] As a further improvement of this utility model, it also includes a sensor group and a PLC controller for monitoring the state of the adhesive sheet; The sensor group includes a flatness sensor and a tension sensor, and the signal output terminal of the sensor group is electrically connected to the signal input terminal of the PLC controller. The control signal output terminal of the PLC controller is electrically connected to the air port control valve of the bidirectional cylinder assembly.

[0013] As a further improvement of this utility model, the flatness sensor has a measurement range of 0~10mm and an accuracy of 0.01mm; the tension sensor has a measurement range of 0~100N and an accuracy of 0.1N.

[0014] The above technical solution has the following beneficial effects: 1. Improve bonding efficiency: By optimizing the structure of the bidirectional cylinder assembly, friction is reduced and the smoothness of extension and retraction is improved, realizing the combined action of vertical bonding and horizontal scraping, effectively improving the production efficiency of thin adhesive sheets.

[0015] 2. Enhance adaptability: Improve the horizontal scraping component to make it replaceable. The scraping blade can be replaced according to the material and thickness of different adhesive sheets to improve the scraping effect and enhance the adaptability of the equipment.

[0016] 3. Improve automation level: The sensor group monitors the status of the bonding sheet in real time and automatically adjusts the cylinder action parameters, reducing the impact of human factors and improving production accuracy and stability.

[0017] 4. Solve edge warping and full-width folding problems: Through precise control of compound actions, the problems of edge warping and full-width folding in the production of thin adhesive sheets are effectively solved, thereby improving product quality.

[0018] 5. Reduced production costs: Automated control systems reduce the need for manual monitoring and adjustments, lowering labor costs, while also improving production efficiency, reducing material waste, and further reducing production costs. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] The structures, proportions, sizes, etc. shown in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 A three-dimensional structural diagram of this utility model.

[0022] Figure 2 This is a schematic diagram of the main structure of the present invention.

[0023] Figure 3 A schematic diagram of the left-side structure provided by this utility model.

[0024] In the picture: 1. Two-way cylinder assembly; 11. Vertical cylinder; 12. Horizontal cylinder; 2. Horizontal scraping component; 21. Scraper carrier; 22. Scraping pad. Detailed Implementation

[0025] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0026] like Figures 1-3 As shown, a pneumatic bidirectional anti-folding device for the production of copper-clad laminate bonding sheets includes a bidirectional cylinder assembly 1 that realizes combined vertical and horizontal movements. The cylinder body of the bidirectional cylinder assembly 1 is provided with multiple independently controllable air holes. By controlling the opening and closing of different air holes, the piston extension and retraction speed and force of the bidirectional cylinder assembly 1 are adjusted to ensure that an appropriate force is provided when facing copper-clad laminate bonding sheets of different thicknesses and materials, avoiding damage to the bonding sheet due to excessive force or failure to prevent folding due to insufficient force. A horizontal scraping component 2 is provided at the output end of the bidirectional cylinder assembly 1. The horizontal scraping component 2 includes a scraper carrier 21, on which a scraper 22 is detachably mounted.

[0027] In this design, the bidirectional cylinder assembly 1 is composed of a vertical cylinder 11 and a horizontal cylinder 12. Specifically, the cylinder body of the horizontal cylinder 12 is fixedly connected to the piston of the vertical cylinder 11 via a connector. This connector can be a bolted metal flange or a welded metal bracket; any structure that achieves a stable connection between the two without affecting the extension and retraction of the cylinder piston is considered an equivalent implementation. The piston end of the horizontal cylinder 12 is fixedly connected to the scraper carrier 22. This connection can be a threaded connection for easy disassembly and maintenance later.

[0028] During operation, the vertical cylinder 11 provides a vertical bonding action, driving the horizontal scraping component 2 to approach the surface of the copper clad laminate bonding sheet and maintain appropriate bonding pressure. At the same time, the horizontal cylinder 12 provides a horizontal scraping action, driving the scraping blade 22 to perform a uniform scraping motion along the surface of the bonding sheet. This applies force to the bonding sheet from three-dimensional space, which can effectively smooth out the warping of the bonding sheet edges and eliminate the folding caused by uneven force during the transmission of the entire bonding sheet, significantly improving the production quality of the copper clad laminate bonding sheet.

[0029] Furthermore, the scraper carrier 22 and the scraper 23 employ a magnetic quick-release structure. This can be achieved by embedding a permanent magnet on the mounting surface of the scraper carrier 22 and placing a magnetically conductive metal sheet on the back of the scraper 23. Alternatively, the mounting positions of the permanent magnet and the magnetically conductive metal sheet can be interchanged. Any structure that allows for rapid magnetic attraction and separation is considered an equivalent implementation. This structure allows for scraper replacement without tools. When producing copper-clad laminate bonding sheets of different specifications, it can quickly replace scrapers with different hardnesses (Shore A30-90) or scrapers made of different materials such as polyurethane or wear-resistant rubber, adapting to diverse production needs and improving equipment adaptability and production efficiency.

[0030] Preferably, the working surface of the scraper 23 is provided with a biomimetic micro-protrusion texture. Specifically, the sharkskin-like rib structure can be set as parallel ribs spaced 0.5-2mm apart, with a rib height of 0.1-0.3mm. The ribs can also be set as arc-shaped or wavy structures, etc., as long as the design can achieve adaptive friction force through tribological optimization, it is an equivalent solution. During scraping, this texture can adjust the contact friction force according to the surface condition of the adhesive sheet, both smoothing wrinkles with appropriate friction force and avoiding scratches on the adhesive sheet surface due to excessive friction, thus ensuring product quality.

[0031] In this design, the piston of the bidirectional cylinder assembly 1 is designed with a gradient hardness composite material. The outer layer can be made of high-strength materials such as No. 45 steel or alloy steel to ensure that the piston has sufficient structural strength during reciprocating motion and resists the wear caused by air pressure and cylinder wall friction. The inner layer can be made of high-elasticity materials such as nitrile rubber or fluororubber to achieve a buffering effect during movement and avoid rigid impact. This design can also be implemented using a combination of an outer ceramic coating and an inner elastic metal layer, as long as the gradient characteristics of high hardness in the outer layer and high elasticity in the inner layer are met, ultimately achieving smooth and controllable compound action of the piston and ensuring the stability of the device operation.

[0032] This device also includes a sensor array for real-time monitoring of the bonding sheet status and a PLC controller for automated control. Together, they form a closed-loop control system, enhancing the device's ability to precisely control the production process.

[0033] The sensor group includes a flatness sensor and a tension sensor. The signal output terminal of the sensor group is electrically connected to the signal input terminal of the PLC controller. The flatness sensor can be installed above or below the bonding sheet transport path. A laser displacement type flatness sensor is preferred, with a measurement range of 0~10mm and an accuracy of 0.01mm, accurately capturing flatness deviations of 0.01mm on the bonding sheet surface. The tension sensor is installed on the force-bearing part of the bonding sheet transport roller. A tension type tension sensor is used, with a measurement range of 0~100N and an accuracy of 0.1N, allowing real-time monitoring of tension changes during bonding sheet transport.

[0034] The signal output of the sensor group is electrically connected to the signal input of the PLC controller via a shielded cable to ensure stable transmission of the monitoring signal and avoid external interference affecting data accuracy. The PLC controller has a pre-set control program, and its control signal output is electrically connected to the air orifice control valve of the bidirectional cylinder assembly 1 via a relay or solenoid valve group. When the flatness sensor detects wrinkles on the adhesive sheet exceeding a set threshold (e.g., flatness deviation greater than 0.1mm), or the tension sensor detects abnormal tension (e.g., tension below 10N or above 90N), the PLC controller immediately analyzes the signal and outputs control commands to adjust the opening and closing degree and air intake speed of the air orifice control valve, thereby adjusting the piston extension and retraction speed and force of the bidirectional cylinder assembly 1 to achieve real-time optimization of the scraping action.

[0035] By combining sensor arrays and PLC controllers, real-time monitoring and automatic adjustment of the production process are achieved, significantly reducing manual intervention and improving production accuracy and stability. Example 1

[0036] This device was used to produce thin bonding sheets on a copper clad laminate production line.

[0037] Preparation stage: Select and install a rubber squeegee with a Shore A40 hardness according to the specifications of the bonding sheet to be produced (e.g., thickness 0.08mm). Check that the sensor and control system connections are normal.

[0038] Operation phase: The device was started, and the production line began operation. The flatness sensor detected a slight wavy warp of about 0.5mm at a certain point on the adhesive sheet.

[0039] After receiving the sensor signal, the PLC controller in the control cabinet immediately calculates and instructs the bidirectional cylinder assembly at the corresponding position to adjust the action parameters: first, it applies a strong vertical contact to the area at a speed of 0.2 m / s and a force of 45 N; then it switches to a speed of 0.8 m / s and a force of 15 N for rapid horizontal scraping.

[0040] This combined action quickly flattens the warped area. Tension sensors monitor the entire process synchronously, ensuring the sheet tension remains stable within a safe range.

[0041] Results Verification: The treated adhesive sheet has a smooth surface without any warping or folding defects. Compared to traditional methods, this embodiment reduces the defect rate of adhesive sheets of this specification by approximately 70%, increases production efficiency by approximately 25%, and requires no dedicated personnel for monitoring and adjustment.

[0042] This embodiment demonstrates that the device and method of the present invention can efficiently and stably solve the problem of preventing folding in the production of thin adhesive sheets, and has extremely high practical value and promotion prospects.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pneumatic bidirectional anti-folding device for the production of copper-clad laminate bonding sheets, characterized in that, The invention includes a bidirectional cylinder assembly that enables combined vertical and horizontal movements. The cylinder body of the bidirectional cylinder assembly is provided with multiple independently controllable air holes. By controlling the opening and closing of different air holes, the piston extension and retraction speed and force of the bidirectional cylinder assembly can be adjusted. The output end of the bidirectional cylinder assembly is provided with a horizontal scraping component, which includes a scraper carrier on which a scraper is detachably mounted.

2. The pneumatic bidirectional anti-folding device according to claim 1, characterized in that, The scraper carrier and the scraper are connected by a magnetic quick-release structure.

3. The pneumatic bidirectional anti-folding device according to claim 2, characterized in that, The working surface of the swabbing blade is provided with biomimetic micro-protrusion texture.

4. The pneumatic bidirectional anti-folding device according to claim 3, characterized in that, The biomimetic micro-protrusion texture is a sharkskin-like ribbed structure.

5. The pneumatic bidirectional anti-folding device according to claim 1, characterized in that, The piston of the bidirectional cylinder assembly is made of a gradient hardness composite material.

6. The pneumatic bidirectional anti-folding device according to claim 1, characterized in that, It also includes a sensor array and a PLC controller for monitoring the condition of the adhesive sheet; The sensor group includes a flatness sensor and a tension sensor, and the signal output terminal of the sensor group is electrically connected to the signal input terminal of the PLC controller. The control signal output terminal of the PLC controller is electrically connected to the air port control valve of the bidirectional cylinder assembly.

7. The pneumatic bidirectional anti-folding device according to claim 6, characterized in that, The flatness sensor has a measurement range of 0~10mm and an accuracy of 0.01mm; the tension sensor has a measurement range of 0~100N and an accuracy of 0.1N.

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