A dual-axis rotation positioning and calibration fixture

Abstract

The present invention provides a dual-axis rotation positioning calibration fixture, comprising a base plate, a first clamp and a second clamp, wherein the base plate is slidably connected with a first bracket, the first clamp is provided with a first rotating shaft at the bottom, the first bracket is provided with a second rotating shaft at the bottom, the first clamp is rotatably connected with the first bracket through the first rotating shaft, and the second clamp is fixedly arranged on the base plate, characterized in that a first servo motor and a second servo motor are further provided, wherein the first servo motor can control the first clamp to rotate around the first rotating shaft by driving the first rotating shaft, and the second servo motor can control the first bracket to move in the front and rear directions by driving the second rotating shaft. The flexible flat cable products can be accurately positioned and installed, ensuring high-precision positioning to meet the quality requirements of the products.

Description

Technical Field

[0001] The present invention relates to the technical field of process assembly tools, and in particular to a dual-axis rotation positioning and calibration fixture. Background Art

[0002] Flexible flat cables are made of copper wires coated with hot-pressed film and are generally soft, flame-resistant, and heat-resistant. Flexible flat cables are now widely used in the connection between the print heads of various printers and motherboards, and in the signal transmission and board-to-board connection of plotters, scanners, copiers, audio equipment, LCD appliances, fax machines, various DVD players, tablet computer displays, and other products. They are almost everywhere in modern electrical equipment.

[0003] For installation purposes, the produced flexible flat cables need to be precisely positioned and installed. If such positioning and installation is done manually without the aid of jigs, the labor intensity of the workers is high, and the quality of the products produced is not uniform, which increases the defective rate of the products and production costs. At present, the jigs for assembly of flexible flat cables on the market are generally complex in structure, unstable and unreliable in performance, and cannot meet the strain rate and positioning accuracy requirements of different types of display flexible flat cables during positioning and installation. Summary of the invention

[0004] In order to solve the problem that the existing process assembly fixtures have complex structures and cannot meet the strain rate and positioning accuracy requirements of different types of tablet computer display flexible cables during positioning and installation, the present invention provides a dual-axis rotation positioning and calibration fixture.

[0005] A dual-axis rotation positioning and calibration fixture comprises a base plate, a first clamp and a second clamp, wherein the base plate is slidably connected to a first bracket, a first rotating shaft is provided at the bottom of the first clamp, a second rotating shaft is provided at the bottom of the first bracket, the first clamp is rotatably connected to the first bracket via the first rotating shaft, and the second clamp is fixedly arranged on the base plate, characterized in that a first servo motor and a second servo motor are further provided, wherein the first servo motor can control the first clamp to rotate around the first rotating shaft by driving the first rotating shaft, and the second servo motor can control the first bracket to move in the front-rear direction by driving the second rotating shaft.

[0006] Furthermore, the first servo motor is provided with a first driving wheel, the first rotating shaft is provided with a first driven wheel, and the first driving wheel and the first driven wheel are connected via a first transmission belt.

[0007] Furthermore, the first servo motor is arranged on the first bracket, and the first driving wheel and the first driven wheel are arranged on the same plane.

[0008] Furthermore, the rotation angle range of the first clamp relative to the horizontal plane is 0-150°.

[0009] In another preferred embodiment of the present invention, the second servo motor is provided with a second driving wheel, the second rotating shaft is provided with a second driven wheel, and the second driving wheel and the second driven wheel are connected by a second transmission belt.

[0010] Furthermore, the second rotating shaft is a ball screw structure, and the ball screw structure and the first bracket are rotationally matched, and the first bracket can be driven to move in the front-rear direction through the rotation of the ball screw structure.

[0011] Furthermore, the second servo motor is arranged at the bottom of the base plate, and the second driving wheel and the second driven wheel are arranged on the same plane.

[0012] Furthermore, the first bracket is fixedly provided with a slider structure, the bottom plate is fixedly provided with a slide rail structure, and the slider structure can move in the front-rear direction along the slide rail structure.

[0013] Furthermore, it also includes a frame structure, which is arranged at the bottom of the base plate.

[0014] Furthermore, it also includes a frame protection structure, which is arranged on the top of the rack structure.

[0015] The dual-axis rotation positioning calibration fixture of the present invention comprises a first fixture and a second fixture. The first servo motor drives the first rotating shaft at the bottom of the first fixture to control the first fixture to rotate around the first rotating shaft by 0-150°. The second fixture is fixedly arranged on the bottom plate. When the bottom surfaces of the first fixture and the second fixture are in contact, the angle between the first fixture and the horizontal plane is 0. When the tops of the first fixture and the second fixture are in contact, the angle between the first fixture and the horizontal plane is 150°. The second servo motor drives the second rotating shaft that is in gap with the first bracket to control the first fixture on the first bracket to move in the front-to-back direction. Therefore, through the dual-axis rotation of the first rotating shaft and the second rotating shaft, the position of the first fixture in the front-to-back direction and the spatial position of different rotation angles relative to the horizontal plane can be adjusted. The dual-axis position adjustment is performed simultaneously to realize the positioning of the flexible flat cable within a smaller bending radius. Therefore, it can meet the assembly positioning requirements of different types of flexible flat cables, ensure the product strain rate, and adapt to the inconsistency of the products to be assembled; and it can accurately position and install the flexible flat cable products to ensure high-precision positioning to meet the quality requirements of the products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the matching relationship between the base plate and the second clamp of the present invention;

[0017] Figure 2is a schematic diagram of the matching relationship between the first clamp and the first bracket of the present invention;

[0018] Figure 3 is a schematic diagram of a first motor and a first clamp of the present invention;

[0019] Figure 4 is a schematic diagram of a second motor and a bracket of the present invention;

[0020] Figure 5 is a schematic diagram of the relative positional relationship between the first clamp and the second clamp of the present invention;

[0021] Figure 6 It is a schematic diagram of the overall structure of the dual-axis rotation positioning calibration fixture of the present invention;

[0022] Explanation of the reference numerals in the accompanying drawings: 1. base plate; 101. slide rail structure; 2. first clamp; 201. first rotating shaft; 3. second clamp; 4. first bracket; 401. slider structure; 402. second rotating shaft; 5. first servo motor; 501. first driving wheel; 502. first driven wheel; 503. first transmission belt; 6. second servo motor; 601. second driving wheel; 602. second driven wheel; 603. second transmission belt; 7. frame structure; 8. frame structure. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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.

[0024] See also Figure 1 As shown, according to an embodiment of the present invention, the second clamp 3 of the dual-axis rotation positioning and calibration fixture is fixed to the upper surface of the base plate 1 through a bracket structure, and the second clamp 3 is an L-shaped structure as a whole, and its horizontal end is used to place the product to be installed and positioned, and the vertical end is used to limit the rotational movement angle of the first clamp 2 to ensure that the maximum rotation angle of the first clamp 2 relative to the horizontal plane is 150°.

[0025] See also Figure 2 As shown, according to an embodiment of the present invention, a first rotating shaft 201 is provided at the bottom of the first clamp 2 of the dual-axis rotation positioning and calibration fixture, and the first clamp 2 is rotatably connected to the first bracket 4 through the first rotating shaft 201. The first clamp 2 can rotate around the first rotating shaft 201. At the same time, due to the limiting effect of the second clamp 3, the rotation angle range of the first clamp 2 relative to the horizontal plane is 0-150°.

[0026] The first servo motor 5 is disposed on the upper surface of the first bracket 4. The second rotating shaft 402 adopts a ball screw structure. The ball screw structure is a precision mechanical transmission element that converts rotational motion into linear motion and has the characteristics of high precision and reversibility. The bottom of the first bracket 4 and the second rotating shaft 402 are rotated together. When the second rotating shaft 402 rotates, it can drive the first bracket 4 to move in the front and rear directions.

[0027] See also Figure 3 As shown, according to an embodiment of the present invention, a slider structure 401 is provided at the bottom of the first bracket 4 of the dual-axis rotation positioning and calibration fixture, and a slide rail structure 101 is provided on the upper surface of the base plate 1. The slide rail structure 101 and the slider structure 401 are slidably matched to ensure that the first bracket 4 can slide relative to the base plate 1, thereby ensuring that the first clamp 2 connected to the first bracket 4 can move in the front and rear directions relative to the base plate 1.

[0028] The first servo motor 5 is arranged on the upper surface of the first bracket 4, and a first driving wheel 501 is arranged on the side thereof. The first rotating shaft 201 is provided with a first driven wheel 502. The first driving wheel 501 and the first driven wheel 502 are connected by a first transmission belt 503. The first driving wheel 501 and the first driven wheel 502 are in the same plane, ensuring that the first driving wheel 501 drives the first driven wheel 502 to rotate through the first transmission belt 503, thereby driving the first clamp 2 to rotate around the first rotating shaft 201 within an angle range of 0-150°.

[0029] See also Figure 4 As shown, according to an embodiment of the present invention, the second servo motor 6 of the dual-axis rotation positioning and calibration fixture is arranged at the bottom of the base plate 1, and a second driving wheel 601 is arranged on its side. The second driving wheel 601 and the second driven wheel 602 are in the same plane, ensuring that the second driving wheel 601 and the second driven wheel 602 can be connected through the second transmission belt 603. The second driving wheel 601 drives the second driven wheel 602 to rotate through the second transmission belt 603. Since the first bracket 4 cooperates with the base plate 1 through the slide rail structure 101, the first bracket 4 is driven to move in the front and rear directions.

[0030] See also Figure 5 As shown, according to an embodiment of the present invention, the maximum angle that the first clamp 2 can rotate is the position in contact with the upper part of the second clamp 3. Due to the limiting effect of the upper part of the second clamp 3 and the feedback effect of the encoder and the photoelectric switch, the maximum angle between the first clamp 2 of the dual-axis rotation positioning and calibration fixture and the horizontal plane is 150°, which prevents the first clamp 2 from rotating too much and failing to accurately position the product to be assembled.

[0031] See also Figure 6As shown, according to an embodiment of the present invention, the dual-axis rotation positioning and calibration fixture also includes a frame structure 7 arranged at the bottom of the base plate 1, and the frame structure 7 is used to support components such as the first clamp 2, the second clamp 3 and the first bracket 4 on the top; a rotatable wheel (not marked in the figure) is provided at the bottom of the frame structure 7 to facilitate the movement of the dual-axis rotation positioning and calibration fixture product.

[0032] A frame structure 8 is provided on the top of the frame structure, which completely covers the bottom plate 1 and is slightly lower than the height of the horizontal part of the second fixture 3, and is used to accommodate the first bracket 4, the first servo motor 5, the second servo motor 6 and other structural and circuit components.

[0033] The dual-axis rotation positioning calibration fixture of the present invention is different from traditional process assembly fixtures. Traditional process assembly fixtures have complex structures and are inconvenient to operate. Usually, one model of fixture can only adapt to one type of flexible flat cable. When testing multiple flexible flat cables, different types of fixtures need to be replaced.

[0034] The dual-axis rotation positioning and calibration fixture of the present invention includes a first clamp 2, a second clamp 3 and a first bracket 4. The first clamp 2 is rotationally connected to the first bracket 4 through the first rotating shaft 201, and its rotational movement is driven by the first servo motor 5; the first bracket 4 and the second rotating shaft 402 are clearance-matched, and the second servo motor 6 drives the second rotating shaft 402 to control its movement in the front-to-back direction. Therefore, the dual-axis rotation of the first rotating shaft 201 and the second rotating shaft 402 can adjust the position of the first clamp 2 in the front-to-back direction and the spatial position of different rotation angles relative to the horizontal plane. The dual-axis position adjustment is performed simultaneously to realize the positioning of the soft flat cable within a smaller bending radius. In this way, it can meet the assembly and positioning requirements of different types of soft flat cables, ensure the product strain rate, and adapt to the inconsistency of the products to be assembled; it can also accurately position and install the soft flat cable products, ensure high-precision positioning, and meet the quality requirements of the products.

[0035] Of course, the above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the basic principles of the present invention, and these improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A dual-axis rotation positioning and calibration fixture, comprising a base plate, a first clamp and a second clamp, wherein the base plate is slidably connected with a first bracket, a first rotating shaft is provided at the bottom of the first clamp, a second rotating shaft is provided at the bottom of the first bracket, the first clamp is rotatably connected to the first bracket through the first rotating shaft, and the second clamp is fixedly arranged on the base plate, characterized in that: A first servo motor and a second servo motor are also provided, wherein the first servo motor can control the first fixture to rotate around the first rotating shaft by driving the first rotating shaft, and the second servo motor can control the first bracket to move in the front-rear direction by driving the second rotating shaft; The second fixture is an L-shaped structure as a whole, with a horizontal end for placing the product to be installed and positioned, and a vertical end for limiting the rotation angle of the first fixture; The first servo motor is provided with a first driving wheel, the first rotating shaft is provided with a first driven wheel, and the first driving wheel and the first driven wheel are connected via a first transmission belt; The second servo motor is provided with a second driving wheel, the second rotating shaft is provided with a second driven wheel, and the second driving wheel and the second driven wheel are connected via a second transmission belt; The rotation angle range of the first fixture relative to the horizontal plane is 0-150°; The dual-axis rotation positioning and calibration fixture is a process assembly fixture used for positioning and installing the soft flat cable of a tablet computer display.

2. The dual-axis rotation positioning calibration fixture according to claim 1, characterized in that: The first servo motor is arranged on the first bracket, and the first driving wheel and the first driven wheel are arranged on the same plane.

3. The dual-axis rotation positioning calibration fixture according to claim 1, characterized in that: The second rotating shaft is a ball screw structure, and the ball screw structure and the first bracket are rotationally matched. The rotation of the ball screw structure can drive the first bracket to move in the front-rear direction.

4. The dual-axis rotation positioning calibration fixture according to claim 3, characterized in that: The second servo motor is arranged at the bottom of the base plate, and the second driving wheel and the second driven wheel are arranged on the same plane.

5. The dual-axis rotation positioning calibration fixture according to claim 4, characterized in that: The first bracket is fixedly provided with a slider structure, the bottom plate is fixedly provided with a slide rail structure, and the slider structure can move in the front-rear direction along the slide rail structure.

6. The dual-axis rotation positioning calibration fixture according to any one of claims 1 to 5, characterized in that: It also includes a frame structure, which is arranged at the bottom of the base plate.

7. The dual-axis rotation positioning calibration fixture according to claim 6, characterized in that: It also includes a frame protection structure, which is arranged on the top of the frame structure.

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