Crimping method and crimping device for FPC (Flexible Printed Circuit) of vehicle-mounted screen

Abstract

The invention provides a vehicle-mounted screen FPC crimping method and device, and the method comprises the following steps: S1, carrying out the pre-debugging, calling a corresponding X-direction position parameter according to the model of a to-be-tested product, enabling an X-direction drive module in a crimping module to move according to the parameter information, and enabling a pressure head to be located at a preset crimping position; s2, preparing a product, starting a Y-direction receding mechanism, integrally moving a Z-direction crimping mechanism and a visual unit on the Y-direction receding mechanism backwards so as to vacate an operation space above the pressure head, and moving a crimping end of the to-be-tested product to a position right above the pressure head, and placing the to-be-tested product on the pressure head from top to bottom; and S3, compression joint is executed, the Y-direction receding mechanism moves forwards to the original position, and the Z-direction compression joint mechanism drives a pressing assembly to press downwards so as to complete compression joint operation. The method ensures that the to-be-tested product is stably placed on the pressure head from top to bottom, and improves the success probability of placing the to-be-tested product on the pressure head.

Description

Technical Field

[0001] The present invention relates to the field of display panel detection, and in particular to a crimping method and a crimping device for a vehicle-mounted screen FPC. Background Art

[0002] In the existing field of crimping device technology, a variety of functional components are configured just above the pressure head to achieve efficient and accurate crimping operations. This makes it difficult to solve the positioning of the crimping end of the product to be tested before crimping. Specifically, since the crimping end generally uses flexible circuit board materials, this material is prone to sagging or bending during the positioning process of moving from the side to the top of the pressure head due to its inherent softness and variability. This sagging or bending not only significantly increases the complexity and technical difficulty of the crimping operation, but more importantly, it directly and seriously affects the success rate of crimping. When the crimping end cannot maintain the proper horizontal position due to sagging, or is blocked by other components due to sagging at the end, resulting in the inability to move smoothly to the bottom of the pressure head for crimping, the entire product testing or production process will be hindered, directly leading to the failure of the product to be tested. This phenomenon not only seriously reduces production efficiency and greatly increases the scrap rate, but also poses a great obstacle and challenge to the effective control of production costs and the steady improvement of product quality. Summary of the invention

[0003] In order to solve all or part of the problems of the above-mentioned prior art, the present invention provides a crimping method and a crimping device for a vehicle-mounted screen FPC. The method uses a Y-axis retreat mechanism in the product preparation stage to create an obstacle-free operating space directly above the pressing head, ensuring that the product to be tested can be placed on the pressing head smoothly and accurately from top to bottom. This innovative design greatly improves the probability of successfully placing the product to be tested on the pressing head.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A method for crimping a vehicle-mounted screen FPC comprises the following steps:

[0006] S1. Pre-debugging: according to the model of the product to be tested, the corresponding X-axis position parameters are called, and the X-axis drive module in the crimping module moves according to the parameter information so that the pressure head is located at the preset crimping position;

[0007] S2. Product preparation, start the Y-axis retreat mechanism, move the Z-axis crimping mechanism and the visual unit on it backward as a whole to free up the operating space above the pressure head, and move the crimping end of the product to be tested to just above the pressure head and place it on the pressure head from top to bottom;

[0008] S3. Execute crimping, the Y-direction retreat mechanism moves forward to the original position, and the Z-direction crimping mechanism drives the pressing assembly to press down to complete the crimping operation.

[0009] In step S3, before crimping, the visual unit takes a picture of the product to be tested, and according to the image information, the θ-direction correction mechanism in the crimping module fine-tunes the position of the pressure head so that the crimping point of the product to be tested completely corresponds to the crimping point of the pressure head.

[0010] The present invention also provides a crimping device for a vehicle-mounted screen FPC, which is used to implement the above method, and includes at least one group of crimping modules provided with a crimping head, and the crimping module specifically includes:

[0011] An X-axis driving module, used for adjusting the position of the pressure head in the X-axis;

[0012] A crimping module, which is arranged on the X-direction driving module, specifically includes a Y-direction retreat mechanism and a Z-direction crimping mechanism arranged on the Y-direction retreat mechanism, a pressing assembly is arranged at the driving end of the Z-direction crimping mechanism, the Y-direction retreat mechanism is used to move the Z-direction crimping mechanism directly above the pressure head backward and restore it to its original position, and the Z-direction crimping mechanism is used to drive the pressing assembly to press down.

[0013] The crimping module also includes a θ-direction correction mechanism and a visual unit arranged on the Y-direction retreat mechanism, the visual unit is used to take pictures and position the pressing head and the product to be tested, and the θ-direction correction mechanism is used to adjust the position of the pressing head in the θ direction.

[0014] The crimping module includes a base, and the Y-direction retreat mechanism is installed on the base through a support frame. The Y-direction retreat mechanism includes a second transmission rod, a sliding seat and a Y-axis motor. One end of the second transmission rod is connected to the output end of the Y-axis motor, and the sliding seat is installed on the second transmission rod and moves on the second transmission rod driven by the Y-axis motor.

[0015] The Z-direction crimping mechanism and the visual unit are installed on the sliding seat. The visual unit includes a camera and a light source. The shooting range of the camera and the irradiation range of the light source are the crimping position of the crimping head.

[0016] The support frame is also provided with two parallel second guide rails, the bottom of the sliding seat is provided with a sliding block corresponding to the second guide rails, and the sliding seat is movably mounted on the second guide rails through the sliding block.

[0017] The crimping module includes a base, the θ-direction correction mechanism is arranged above the base, and the pressure head is arranged at the driving end of the θ-direction driving mechanism; the θ-direction correction mechanism includes a hollow rotating platform and a θ-direction motor, the output end of the θ-direction motor is connected to the input end of the hollow rotating platform, and the output end of the hollow rotating platform is connected to the pressure head through a first connecting plate.

[0018] The θ-direction correction mechanism also includes a displacement sensing device, specifically including a sensing block arranged on the first connecting plate and a first sensor and a second sensor arranged on the base and corresponding to the sensing block, the first sensor corresponding to the initial position of the pressure head, and the first sensor corresponding to the rotation limit position.

[0019] The X-axis drive module includes two first guide rails arranged in parallel, and also includes an X-axis drive mechanism arranged between the two first guide rails; the X-axis drive mechanism includes a first transmission rod and an X-axis motor, one end of the first transmission rod is connected to the output end of the X-axis motor, and the base is connected to the first transmission rod through a nut block arranged on its mounting hole; a slider matching the first guide rail is arranged at the bottom of the base.

[0020] The present invention has at least the following beneficial effects:

[0021] 1) By integrating the X-axis drive module, the Y-axis retreat mechanism and the θ-axis correction mechanism, the position of the pressure head can be precisely controlled in all directions. Before crimping, the Y-axis retreat mechanism can automatically remove the relevant components above the pressure head, providing an unobstructed placement space for the crimping end of the product to be tested, effectively avoiding the sagging or bending of the flexible circuit board during movement. At the same time, the θ-axis correction mechanism fine-tunes the position of the pressure head according to the image information captured by the visual unit to ensure that the crimping point of the product to be tested is completely consistent with the crimping point of the pressure head, thereby significantly improving the accuracy and success rate of crimping.

[0022] 2) The X-axis drive module uses two parallel first guide rails, and the avoidance holes on the base effectively avoid mutual interference between adjacent crimping modules during movement, so that multiple groups of crimping modules can operate simultaneously, independently and accurately. In addition, the setting of the displacement sensing device further improves the safety and stability of the equipment, and effectively prevents equipment damage or poor crimping due to excessive rotation. These designs make the crimping device of the present invention more compatible and stable when adapting to products of different models and specifications to be tested.

[0023] 3) The crimping method and device of the present invention simplify the positioning process before crimping, and directly call the corresponding X-axis position parameters through the pre-debugging step, so that the pressure head can be quickly positioned to the preset crimping position. During the crimping process, the coordinated work of the Y-axis retreat mechanism and the θ-axis correction mechanism makes the crimping operation smoother and more efficient. In addition, the device is also compatible with the parallel operation of multiple groups of crimping modules, further optimizing the spatial layout, improving the overall efficiency and flexibility of the equipment, and thus greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of a crimping device for a vehicle-mounted screen FPC in an embodiment of the present invention.

[0026] Figure 2 The embodiment of the present invention provides Figure 1 Schematic diagram of the structure of the medium-pressure connection module.

[0027] Figure 3 The embodiment of the present invention provides Figure 2 Side view of the crimping module when the middle Y-axis retreat mechanism is in the initial position.

[0028] Figure 4 The embodiment of the present invention provides Figure 2 Side view of the crimping module when the middle Y-axis retreat mechanism moves backward.

[0029] Figure markings: 1-X-axis driving module; 101-first guide rail; 102-X-axis driving mechanism; 1021-first transmission rod; 1022-X-axis motor; 2-crimping module; 201-base; 2011-support frame; 202-Y-axis retreat mechanism; 203-Z-axis crimping mechanism; 204-visual unit; 2041-camera; 2042-light source; 205-θ-correction mechanism; 2051-displacement sensing device; 3-carrier; 4-controller. DETAILED DESCRIPTION

[0030] The technical solutions in the specific embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the embodiment of the present invention, in combination with reference Figures 1 to 4 As shown, a method for crimping a vehicle-mounted screen FPC (flexible circuit board) is provided, which specifically includes the following steps:

[0032] In the pre-debugging stage, firstly, according to the specific model of the product to be tested, the system automatically calls the matching X-axis position parameters; then, the X-axis drive module 1 in the crimping module moves precisely according to these parameter instructions to ensure that the pressure head is positioned to the preset crimping position, laying the foundation for subsequent operations;

[0033] Product preparation and positioning: In this stage, the Y-direction retreat mechanism 202 is started, which drives the related components installed on it and located above the pressure head to move backward as a whole, so as to free up enough operating space above the pressure head; then, the crimping end of the product to be tested is moved to the top of the pressure head, and is placed on the pressure head steadily from top to bottom; after the product is placed, the Y-direction retreat mechanism 202 is started again, driving the related components to return to their original positions, so as to prepare for the crimping operation;

[0034] Perform the crimping operation. In this step, first use the visual unit 204 to take a photo of the product to be tested to obtain its image information; then, the crimping module fine-tunes the position of the pressure head in the θ direction (i.e., the rotation angle) based on the image information to ensure that the crimping points of the product to be tested and the crimping points of the pressure head can completely overlap; after the correction is completed, the Z-axis crimping mechanism 203 drives the pressure head to slowly press down under control to complete the entire crimping operation.

[0035] The vehicle-mounted screen FPC crimping method provided by the present invention not only successfully realizes the comprehensive automation, high precision and high efficiency of the crimping operation, but also has made breakthrough progress in significantly improving the success rate of crimping. Specifically, the present invention cleverly sets a Y-axis retreat mechanism 202, which can drive all the related functional components located above the pressure head to translate backward as a whole during the crimping preparation stage, thereby creating ample and barrier-free operating space. This design innovation allows the crimping end of the product to be tested to be placed steadily on the pressure head in a more secure, top-down manner. Compared with the traditional method in which the crimping end needs to be positioned above the pressure head by moving the side, the present invention effectively avoids the sagging or bending caused by the inherent softness and variability of the flexible circuit board material, thereby greatly reducing the error and failure rate during the crimping process. Through this series of careful design and optimization, the present invention not only improves the reliability and stability of the crimping operation, but also brings a more efficient and high-quality solution to the manufacturing process of the vehicle-mounted screen FPC.

[0036] The present invention also provides a crimping device for a vehicle-mounted screen FPC, which is used to implement the crimping method described above. The device is provided with a carrier 3, on which at least one set of crimping modules is integrated, and each crimping module is equipped with a crimping head for crimping. The crimping module specifically includes an X-axis driving module 1 and a crimping module 2. The X-axis driving module 1 is responsible for adjusting the position of the crimping head along the X-axis direction to ensure the horizontal displacement accuracy during the crimping operation; the crimping module 2 is installed on the X-axis driving module 1, and is responsible for adjusting the position of the crimping head in the θ-axis direction and performing crimping operations in the Z-axis direction to cope with complex crimping requirements. The crimping module 2 further includes a Y-direction retreat mechanism 202, a θ-direction correction mechanism 205, a Z-direction crimping mechanism 203 and a visual unit 204. The Y-direction retreat mechanism 202 is used to automatically remove the component directly above the pressure head safely and smoothly before crimping to ensure that there is no obstruction when placing the product to be tested from top to bottom; the θ-direction correction mechanism 205 is used to fine-tune the position of the pressure head in the rotation direction (θ direction) to ensure complete alignment between the pressure head and the product to be tested, thereby reducing poor crimping caused by angle deviation. The Z-direction crimping mechanism 203 is used to perform crimping operations in the Z direction. The visual unit 204 is responsible for taking pictures of the pressure head and the product to be tested, achieving precise positioning through image processing algorithms, and providing reliable data support for crimping operations.

[0037] Specifically, the crimping module 2 is designed with a base 201, a θ-direction correction mechanism 205 is installed on the base 201, and the pressure head is arranged at the driving end of the θ-direction driving mechanism to realize rotation adjustment. The θ-direction correction mechanism 205 is mainly composed of a hollow rotating platform and a θ-direction motor. The output end of the θ-direction motor is connected to the input end of the hollow rotating platform to form a driving system, and the output end of the hollow rotating platform is connected to the pressure head through a first connecting plate to ensure the transmission of the rotation action. In addition, in order to further improve the accuracy and safety of the crimping operation, the θ-direction correction mechanism 205 is also provided with a displacement sensing device 2051. The device is composed of a sensing block arranged on the first connecting plate, and a first sensor and a second sensor installed on the base 201 and precisely corresponding to the sensing block. Among them, the first sensor is accurately set at the initial position of the pressure head to monitor the state before the pressure head starts to rotate; and the second sensor corresponds to the extreme position of rotation to ensure that the pressure head does not exceed the safety range during the rotation process, thereby effectively preventing equipment damage or poor crimping due to excessive rotation.

[0038] A support frame 2011 is also installed on the base 201, and the θ-direction correction mechanism 205 is installed in the hollow inner space of the support frame 2011, and the Y-direction retreat mechanism 202 is installed on the top of the support frame 2011. The Y-direction retreat mechanism 202 is mainly composed of a second transmission rod, a sliding seat and a Y-axis motor, wherein one end of the second transmission rod is connected to the output end of the Y-axis motor to form an efficient drive system. The sliding seat is matched and installed on the second transmission rod, and the sliding seat can move smoothly and stably along the second transmission rod under the drive of the Y-axis motor, thereby realizing accurate retreat in the Y direction. The Z-direction crimping mechanism 203 and the visual unit 204 are both arranged on the sliding seat. Wherein, the Z-direction crimping mechanism 203 includes a Z-axis motor and a pressing assembly, and the pressing assembly is installed at the driving end of the Z-axis motor, and can realize accurate crimping action in the Z-axis direction. The visual unit 204 integrates a camera 2041 and a light source 2042. The camera 2041 and the light source 2042 are respectively mounted on the support frame 2011 through connectors. The shooting range of the camera 2041 and the irradiation range of the light source 2042 are both set to the crimping position of the pressure head, thereby ensuring the visual positioning accuracy during the crimping process. In addition, in order to enhance the stability and movement accuracy of the sliding seat, two parallel second guide rails are also provided on the top of the support frame 2011. The bottom of the sliding seat is equipped with a slider corresponding to the second guide rail, so that the sliding seat can be smoothly and stably installed on the second guide rail through the slider, further improving the stability and accuracy of the Y-direction retreat mechanism 202.

[0039] The X-direction driving module 1 mainly includes two first guide rails 101 arranged in parallel on the carrier 3, which serve as the basic support structure of the module to ensure the linearity and stability of the movement. Between the two first guide rails 101, an X-direction driving mechanism 102 is set, which is composed of a first transmission rod 1021 and an X-axis motor 1022, wherein one end of the first transmission rod 1021 is connected to the output end of the X-axis motor 1022, and the rotation of the first transmission rod 1021 is realized by the driving force of the motor, thereby converting the rotational motion into linear motion, and the other end is connected to the base 201 of the crimping module 2 through a nut block, so as to realize the precise movement of the base 201 in the X-axis direction. As a key component of the crimping module 2, the base 201 is provided with a mounting hole, which not only ensures that the base 201 and the first transmission rod 1021 are firmly assembled through the nut block, but also ensures the structural strength and motion accuracy of the entire module. In addition, in order to be compatible with the parallel operation of multiple groups of crimping modules in the same plane, avoidance holes are cleverly opened on the base 201. This design effectively avoids the mutual interference of the first transmission rods 1021 of adjacent crimping modules during the movement process, thereby ensuring that multiple groups of crimping modules can operate simultaneously, independently and accurately. Furthermore, the bottom of the base 201 is equipped with sliders that match the first guide rail 101, and these sliders improve the movement stability and accuracy of the base 201 in the X-axis direction. In this embodiment, the first transmission rod 1021 and the second transmission rod are both screw rods.

[0040] In the present embodiment, two groups of crimping modules are provided, and the X-direction drive modules 1 of the two groups of crimping modules share the same set of first guide rails 101 system, and the two X-direction drive mechanisms 102 are arranged in parallel between the two first guide rails 101. This design not only optimizes the spatial layout, but also improves the overall efficiency and flexibility of the equipment. In addition, a controller 4 is also provided at the bottom of the carrier 3, specifically a PG signal generating device (PatternGenerator, image signal generator). The controller 4 establishes an electrical connection with the pressure head through a wire, and then builds a complete electrical link with the product to be tested. This link provides the necessary electrical connection basis for the point screen test process that is started immediately after the crimping process ends. In the point screen test process, the controller 4 uses the image signal generated by the PG signal generating device to comprehensively detect the screen of the product to be tested, thereby ensuring the quality and reliability of the product.

[0041] The vehicle-mounted screen FPC crimping device provided by the present invention realizes the comprehensive automation, high-precision positioning and efficient operation of the crimping process by integrating the X-axis drive module 1, the multifunctional crimping module 2 and the innovative Y-axis retreat mechanism 202. Among them, the θ-axis correction mechanism 205 combined with the visual unit 204 ensures the precise alignment of the pressure head and the product to be tested, greatly reducing the poor crimping; the design of the Y-axis retreat mechanism 202 provides an obstacle-free space for the stable placement of the product to be tested, effectively avoiding the sagging or bending of the flexible circuit board material; and the precise control of the Z-axis crimping mechanism 203 further improves the crimping quality. In addition, the device is also compatible with the parallel operation of multiple groups of crimping modules, optimizes the spatial layout, and improves production efficiency. In particular, the controller 4 and the PG signal generating device equipped on the carrier 3 provide an electrical connection basis for the point screen test process after crimping, ensuring the final quality and reliability of the product.

[0042] In summary, the present invention not only significantly improves the accuracy and efficiency of the vehicle-mounted screen FPC crimping operation, but also provides a strong guarantee for product quality control.

[0043] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A method for crimping a vehicle-mounted screen FPC, characterized in that: The following steps are involved: S1. Pre-debugging, according to the model of the product to be tested, call the corresponding X-axis position parameters, the X-axis drive module (1) in the crimping module moves according to the parameter information so that the pressure head is located at the preset crimping position; S2. Product preparation, start the Y-direction retreat mechanism (202), move the Z-direction crimping mechanism (203) and the visual unit (204) thereon backward as a whole to free up the operating space above the pressure head, and move the crimping end of the product to be tested to just above the pressure head and place it on the pressure head from top to bottom; S3. Execute crimping, the Y-direction retreat mechanism (202) moves forward to the original position, and the Z-direction crimping mechanism (203) drives the pressing assembly to press down to complete the crimping operation.

2. The method according to claim 1, characterized in that In step S3, before crimping, the visual unit (204) takes a picture of the product to be tested, and based on the image information, the θ-direction correction mechanism (205) in the crimping module fine-tunes the position of the pressure head so that the crimping point of the product to be tested completely corresponds to the crimping point of the pressure head.

3. A crimping device for a vehicle-mounted screen FPC, used to implement the method of claim 1 or 2, characterized in that: It includes at least one group of crimping modules provided with a crimping head, and the crimping module specifically includes: An X-direction driving module (1), used for adjusting the position of the pressure head in the X-direction; A crimping module (2), wherein the crimping module (2) is arranged on the X-direction driving module (1), and specifically comprises a Y-direction retreat mechanism (202) and a Z-direction crimping mechanism (203) arranged on the Y-direction retreat mechanism (202), wherein a pressing assembly is arranged at a driving end of the Z-direction crimping mechanism (203), wherein the Y-direction retreat mechanism (202) is used to move the Z-direction crimping mechanism (203) directly above the pressing head backwards and restore it to its original position, and the Z-direction crimping mechanism (203) is used to drive the pressing assembly to press downward.

4. The device according to claim 3, characterized in that The crimping module (2) further comprises a θ-direction correction mechanism (205) and a visual unit (204) arranged on the Y-direction retreat mechanism (202), wherein the visual unit (204) is used for photographing and positioning the crimping head and the product to be tested, and the θ-direction correction mechanism (205) is used for adjusting the position of the crimping head in the θ direction.

5. The device according to claim 4, characterized in that The crimping die set (2) comprises a base (201), the Y-direction retreat mechanism (202) is mounted on the base (201) via a support frame (2011), the Y-direction retreat mechanism (202) comprises a second transmission rod, a sliding seat and a Y-axis motor, one end of the second transmission rod is connected to the output end of the Y-axis motor, the sliding seat is mounted on the second transmission rod and moves on the second transmission rod as driven by the Y-axis motor.

6. The device according to claim 5, characterized in that The Z-direction crimping mechanism (203) and the visual unit (204) are installed on the sliding seat; the visual unit (204) comprises a camera (2041) and a light source (2042); the shooting range of the camera (2041) and the irradiation range of the light source (2042) are the crimping position of the crimping head.

7. The device according to claim 5, characterized in that The support frame (2011) is also provided with two parallel second guide rails, and the bottom of the sliding seat is provided with a sliding block corresponding to the second guide rail, and the sliding seat is movably mounted on the second guide rail via the sliding block.

8. The device according to claim 3, characterized in that The crimping module (2) comprises a base (201), the θ-direction correction mechanism (205) is arranged above the base (201), and the pressing head is arranged at the driving end of the θ-direction driving mechanism; the θ-direction correction mechanism (205) comprises a hollow rotating platform and a θ-direction motor, the output end of the θ-direction motor is connected to the input end of the hollow rotating platform, and the output end of the hollow rotating platform is connected to the pressing head via a first connecting plate.

9. The device according to claim 8, characterized in that The θ-direction correction mechanism (205) further comprises a displacement sensing device (2051), which specifically comprises a sensing block arranged on the first connecting plate and a first sensor and a second sensor arranged on the base (201) and corresponding to the sensing block, wherein the first sensor corresponds to the initial position of the pressure head and the second sensor corresponds to the rotation limit position.

10. The device according to claim 5 or 8, characterized in that The X-axis driving module (1) comprises two first guide rails (101) arranged in parallel, and also comprises an X-axis driving mechanism (102) arranged between the two first guide rails (101); the X-axis driving mechanism (102) comprises a first transmission rod (1021) and an X-axis motor (1022); one end of the first transmission rod (1021) is connected to the output end of the X-axis motor (1022); the base (201) is connected to the first transmission rod (1021) via a nut block arranged on its mounting hole; and a sliding block matching the first guide rail (101) is arranged at the bottom of the base (201).

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