Flexible flat cable uniform pressing and film covering device

Abstract

The utility model relates to flexible flat cable processing technical field especially relates to a kind of flexible flat cable uniform pressing laminating equipment, including rack and fixedly installed servo motor and driving device on rack, the driving device includes the precision cylinder vertically fixed in the rack top and the piston rod directly connected precision cylinder output end, the piston rod end of the driving device is fixedly connected with mounting plate, the mounting plate bottom end is rigidly connected with main buffer through flange, the utility model is distributed with matrix elastic element between fixed plate and pressing head pedestal, when pressing head pedestal is pressed down, matrix elastic element can carry out independent, self-adapting compression deformation according to the microcosmic unevenness of workpiece surface, absorb excess pressure at high point, continuously supplement pressure at low point, ensure that the pressure distribution height is uniform in entire pressing area by dynamic compensation, avoid the laminating bubble and virtual pressure due to uneven pressure, improve the pressing quality of product.

Description

Technical Field

[0001] This utility model relates to the field of flexible flat cable processing technology, and in particular to a flexible flat cable uniform pressing and coating equipment. Background Technology

[0002] Flexible flat cables, as a type of connection component with excellent characteristics such as bendability, small size, and light weight, are widely used in the internal circuit connections of smartphones, tablets, laptops, and various consumer electronics products. During their manufacturing process, it is often necessary to press and cover a functional film such as a protective film, reinforcing plate, or anisotropic conductive film at specific parts of the cable to achieve insulation, enhance mechanical strength, or form an electrical connection.

[0003] According to Chinese Patent Publication No. CN223390316U, a patent document entitled "A Uniform Pressing and Coating Equipment for Flexible Flat Cables" discloses that existing coating equipment typically uses a rigidly connected pressure head, with the pressing surface being a single rigid plane. In actual production, flexible flat cables inherently possess unavoidable microscopic unevenness errors. When the rigid pressure head presses down, the uneven pressure distribution easily causes air bubbles to form between the coating and the cable, resulting in weak local adhesion and severely affecting the product yield. Furthermore, during the pressing process, the entire plane of the existing coating equipment comes into instantaneous contact with the workpiece surface at a high speed. This sudden linear impact easily causes slight sliding displacement between the not-yet-fully-bonded coating material and the flexible flat cable, resulting in poor alignment accuracy and product malfunction. Utility Model Content

[0004] The purpose of this invention is to solve the problems of poor pressure distribution uniformity leading to poor pressing quality and lack of effective buffering mechanism in existing coating equipment, which result in impact and misalignment. Therefore, this invention proposes a flexible flat cable uniform pressing and coating equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A flexible flat cable uniform pressing and coating equipment includes a frame and a servo motor and drive device fixedly mounted on the frame. The drive device includes a precision cylinder vertically fixed to the top of the frame and a piston rod directly connected to the output end of the precision cylinder. A mounting plate is fixedly connected to the end of the piston rod of the drive device. A main buffer is rigidly connected to the bottom end of the mounting plate through a flange. A fixing plate is rigidly connected to the bottom end of the main buffer. A pressing head base is arranged below the fixing plate. A matrix of elastic elements is distributed between the fixing plate and the pressing head base. The matrix of elastic elements is composed of multiple micro springs. The upper and lower ends of the matrix of elastic elements are respectively fixedly connected to the lower surface of the fixing plate and the upper surface of the pressing head base.

[0006] Preferably, a guide mechanism is installed between the fixing plate and the pressing head base. The guide mechanism includes a guide post and a guide sleeve. The upper end of the guide post is vertically fixed to the fixing plate, and the guide sleeve is pressed into and fixed to the pressing head base.

[0007] Preferably, a temperature sensor is embedded inside the pressing head base, and multiple slots are formed on the side wall of the pressing head base, with heating tubes fixedly installed in the slots.

[0008] Preferably, a pressing panel is fixedly installed at the bottom end of the pressing head base by a high-temperature adhesive, and the pressing panel covers the lower surface of the pressing head base.

[0009] Preferably, a crossbeam is fixed on the frame, a support plate is fixedly installed at the top of the crossbeam, and a silicone pad is provided on the upper surface of the support plate.

[0010] Preferably, a drive shaft and a driven shaft are rotatably mounted on the frame. The drive shaft and the driven shaft are respectively fixedly connected to a drive gear and a driven gear. The driven gear and the drive gear are meshed together. The drive shaft is fixedly connected to the output end of the servo motor. A traction roller is fixedly sleeved on both the drive shaft and the driven shaft.

[0011] Compared with the prior art, the present invention has the following advantages: 1. This utility model adopts a fixed plate rigidly connected to the bottom of the main buffer, and a pressing head base is set below the fixed plate. The main buffer moves first, absorbing most of the kinetic energy and impact, and transforms the rigid linear motion of the drive device into a gentle pressing process with end deceleration. This eliminates the problem of film and cable displacement caused by instantaneous impact in traditional equipment, and ensures alignment accuracy.

[0012] 2. This utility model employs a matrix of elastic elements distributed between the fixed plate and the pressing head base. When the pressing head base is pressed down, the matrix of elastic elements can independently and adaptively compress and deform according to the micro-unevenness of the workpiece surface. It absorbs excess pressure at high points and continuously replenishes pressure at low points. Through dynamic compensation, it ensures that the pressure distribution in the entire pressing area is highly uniform, avoiding film bubbles and false pressure caused by uneven pressure, and improving the pressing quality of the product. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a flexible flat cable uniform pressing and coating device proposed in this utility model; Figure 2 This is a front view of a flexible flat cable uniform pressing and coating device proposed in this utility model; Figure 3This is a partial enlarged view of area A of a flexible flat cable uniform pressing and coating device proposed in this utility model.

[0014] In the diagram: 1. Frame; 2. Servo motor; 3. Drive unit; 4. Mounting plate; 5. Main buffer; 6. Fixing plate; 7. Matrix elastic element; 8. Guide mechanism; 9. Pressing head base; 10. Pressing panel; 11. Temperature sensor; 12. Heating tube; 13. Cross frame; 14. Support plate; 15. Silicone pad; 16. Traction roller; 17. Driven gear; 18. Driven gear. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figures 1-3 A flexible flat cable uniform pressing and coating equipment includes a frame 1 and a servo motor 2 and a drive device 3 fixedly installed on the frame 1.

[0017] A drive shaft and a driven shaft are rotatably mounted on the frame 1. The drive shaft and the driven shaft are respectively fixedly connected to a drive gear 18 and a driven gear 17. The driven gear 17 and the drive gear 18 are meshed together. The drive shaft is fixedly connected to the output end of the servo motor 2. Traction rollers 16 are fixedly sleeved on both the drive shaft and the driven shaft. When the servo motor 2 is started, the servo motor 2 drives the drive shaft to rotate. During the rotation, the drive shaft drives the drive gear 18 to rotate, and through the drive gear 18, drives the driven gear 17 and the driven shaft to rotate synchronously. This makes the traction rollers 16 on the drive shaft and the driven shaft rotate synchronously in opposite directions, thus realizing the traction of the flat cable.

[0018] The drive unit 3 includes a precision cylinder vertically fixed to the top of the frame 1 and a piston rod directly connected to the output end of the precision cylinder. When the drive unit 3 is started, the drive unit 3 pushes the mounting plate 4 down. The design of the precision cylinder makes the descent distance of the mounting plate 4 more precise.

[0019] The piston rod of the drive device 3 is fixedly connected to a mounting plate 4. The mounting plate 4 is a thick flat plate and serves as the primary load-bearing platform for the entire pressing structure to move in the Z direction.

[0020] The bottom end of the main buffer 5 is rigidly connected to a fixing plate 6, and a pressing head base 9 is set below the fixing plate 6. The pressing head base 9 is usually made of aluminum alloy or stainless steel. Aluminum alloy is lightweight and has good thermal conductivity, making it the most common choice. Stainless steel is used when higher corrosion resistance or hardness is required.

[0021] A temperature sensor 11 is embedded inside the pressing head base 9. Multiple slots are opened on the side wall of the pressing head base 9, and heating tubes 12 are fixedly installed in the slots. The heating tubes 12 always ensure that the temperature of the entire working surface is highly uniform.

[0022] A matrix of elastic elements 7 is distributed between the fixed plate 6 and the pressing head base 9. The matrix of elastic elements 7 consists of multiple micro springs. The upper and lower ends of the matrix of elastic elements 7 are fixedly connected to the lower surface of the fixed plate 6 and the upper surface of the pressing head base 9, respectively. The number of micro springs can be set to dozens or even hundreds. Each spring can be compressed independently. When the pressing head base 9 gently contacts the workpiece, the matrix of elastic elements 7 begins to be compressed to different degrees, thereby adapting to the workpiece surface.

[0023] The bottom of the mounting plate 4 is rigidly connected to the main buffer 5 via a flange. The main buffer 5 can be a large pneumatic rod or a spring damper. When the driving device 3 drives the pressing mechanism to descend, the main buffer 5 begins to compress. This process transforms the rigid linear motion of the driving device 3 into a gentle, decelerating pressing process, which greatly eliminates the initial impact force and effectively prevents workpiece displacement and microscopic damage.

[0024] A guide mechanism 8 is installed between the fixed plate 6 and the pressing head base 9. The guide mechanism 8 includes a guide post and a guide sleeve. The upper end of the guide post is vertically fixed on the fixed plate 6, and the guide sleeve is pressed into and fixed on the pressing head base 9.

[0025] Furthermore, the matrix elastic element 7 provides uniformly distributed pressure, while the guide mechanism 8 ensures that the pressing head base 9 can only move in translation and will not tilt or get stuck, so that the pressing head base 9 can float up and down precisely and without shaking relative to the fixed plate 6.

[0026] A pressing panel 10 is fixedly installed at the bottom of the pressing head base 9 by a high-temperature adhesive. The pressing panel 10 covers the lower surface of the pressing head base 9. The pressing panel 10 is usually coated with polytetrafluoroethylene, which has excellent non-stick properties, preventing the overflowing adhesive from sticking to the device and making it easy to clean.

[0027] A crossbeam 13 is fixed on the frame 1, and a support plate 14 is fixedly installed on the top of the crossbeam 13. A silicone pad 15 is provided on the upper surface of the support plate 14. When the pressing head base 9 is pressed down, the matrix elastic element 7 and the silicone pad 15 deform simultaneously, thereby forming a uniform pressure field in a "sandwich" shape. The matrix elastic element 7 and the silicone pad 15 adapt to each other simultaneously, completely eliminating the influence of parallelism error and product thickness tolerance.

[0028] The model of the drive motor 2 can be a three-phase asynchronous motor YE3-225S-4 37KW4, which is the current technology, so this application does not describe it in detail.

[0029] It should be noted that the specific model and specifications to be adopted need to be determined based on the actual specifications of the device. The specific selection and calculation methods use existing technology in this field, so they will not be elaborated here.

[0030] The functional principle of this utility model can be explained through the following operation methods: The device includes a frame 1, a servo motor 2 and a drive unit 3 fixedly mounted on the frame 1. The drive unit 3 includes a precision cylinder vertically fixed to the top of the frame 1 and a piston rod directly connected to the output end of the precision cylinder. The end of the piston rod of the drive unit 3 is fixedly connected to a mounting plate 4. The bottom end of the mounting plate 4 is rigidly connected to a main buffer 5 via a flange. The bottom end of the main buffer 5 is rigidly connected to a fixing plate 6. A pressing head base 9 is provided below the fixing plate 6. A matrix elastic element 7 is distributed between the fixing plate 6 and the pressing head base 9. The matrix elastic element 7 is composed of multiple micro springs. The upper and lower ends of the matrix elastic element 7 are fixedly connected to the lower surface of the fixing plate 6 and the upper surface of the pressing head base 9, respectively. When the drive unit 3 pushes the mounting plate 4 downward, the main buffer 5 first contacts and compresses it. Through buffering and deceleration, a gentle and precise pressing is achieved to prevent workpiece displacement and damage. The pressing head base 9 gently contacts the workpiece, and the matrix elastic element 7 begins to be compressed to varying degrees, adapting to the workpiece surface and avoiding uneven pressure distribution that could cause air bubbles or poor adhesion between the coating and the cable.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flexible flat cable uniform pressing and coating equipment, comprising a frame (1) and a servo motor (2) and a drive device (3) fixedly mounted on the frame (1), characterized in that, The drive device (3) includes a precision cylinder vertically fixed to the top of the frame (1) and a piston rod directly connected to the output end of the precision cylinder. The piston rod of the drive device (3) is fixedly connected to a mounting plate (4). The bottom end of the mounting plate (4) is rigidly connected to a main buffer (5) via a flange. The bottom end of the main buffer (5) is rigidly connected to a fixing plate (6). A pressing head base (9) is provided below the fixing plate (6). A matrix elastic element (7) is distributed between the fixing plate (6) and the pressing head base (9). The matrix elastic element (7) is composed of multiple micro springs. The upper and lower ends of the matrix elastic element (7) are respectively fixedly connected to the lower surface of the fixing plate (6) and the upper surface of the pressing head base (9).

2. The flexible flat cable uniform pressing and coating equipment according to claim 1, characterized in that, A guide mechanism (8) is installed between the fixed plate (6) and the pressing head base (9). The guide mechanism (8) includes a guide post and a guide sleeve. The upper end of the guide post is vertically fixed on the fixed plate (6), and the guide sleeve is pressed into and fixed on the pressing head base (9).

3. The flexible flat cable uniform pressing and coating equipment according to claim 1, characterized in that, A temperature sensor (11) is embedded inside the pressing head base (9), and a plurality of holes and slots are opened on the side wall of the pressing head base (9), and a heating tube (12) is fixedly installed in the holes and slots.

4. The flexible flat cable uniform pressing and coating equipment according to claim 1, characterized in that, The bottom end of the pressing head base (9) is fixedly installed with a pressing panel (10) by a high temperature adhesive, and the pressing panel (10) covers the lower surface of the pressing head base (9).

5. The flexible flat cable uniform pressing and coating equipment according to claim 1, characterized in that, A crossbeam (13) is fixed on the frame (1), and a support plate (14) is fixedly installed on the top of the crossbeam (13). A silicone pad (15) is provided on the upper surface of the support plate (14).

6. The flexible flat cable uniform pressing and coating equipment according to claim 1, characterized in that, The frame (1) is rotatably mounted with an active shaft and a driven shaft. The active shaft and the driven shaft are respectively fixedly connected to an active gear (18) and a driven gear (17). The driven gear (17) and the active gear (18) are meshed together. The active shaft is fixedly connected to the output end of the servo motor (2). The active shaft and the driven shaft are both fixedly sleeved with traction rollers (16).

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