Anti-deviation positioning clamp of full-automatic binding machine

Abstract

This utility model relates to the field of electronic component bonding production technology, specifically an anti-offset positioning fixture for a fully automatic bonding machine. The utility model includes a mounting plate, on the surface of which a fixing plate is fixedly connected. A first servo motor is fixedly connected to one side of the fixing plate, and a bidirectional threaded rod is fixedly connected to the output end of the first servo motor. Two connecting plates are threadedly connected to the arc surface of the bidirectional threaded rod. Four sliding holes are formed on the surface of the mounting plate, and sliding plates are slidably connected to the inner surfaces of the sliding holes, with the four sliding plates arranged in pairs. The first servo motor drives the bidirectional threaded rod to rotate, causing the connecting plates, sliding plates, and push plates to move. The two push plates approach synchronously from both sides, utilizing the precision of mechanical transmission to quickly and stably push the workpiece to the center position of the mounting plate, ensuring that the workpiece is at a preset reference point during the bonding operation, thus improving bonding accuracy and consistency.

Description

Technical Field

[0001] This utility model relates to the field of electronic component bonding production technology, and in particular to an anti-offset positioning fixture for a fully automatic bonding machine. Background Technology

[0002] In the production of electronic components, the bonding accuracy of fully automatic bonding machines directly determines the product yield. When the workpiece positioning offset exceeds a certain distance, it will cause electrode alignment deviation, circuit short circuit, and hard collision between the bonding head and the workpiece, resulting in wear of the bonding head and equipment shutdown. As electronic components evolve towards miniaturization and thinning, higher requirements are placed on the accuracy, adaptability and stability of positioning fixtures, while existing positioning solutions have become a technical bottleneck.

[0003] Chinese patent application CN202022590784.1 discloses a novel fully automatic binding machine. The key technical points of this machine are: a motor drives a screw to rotate; the screw, in conjunction with a rectangular block, allows the block to move outwards or inwards. This movement, via a connecting rod, moves a support block, the binding machine, and the conveyor belt upwards or downwards for adjustment. This allows the conveyor belt to connect with other conveying devices, facilitating worker adjustments and preventing excessive wear on the conveyor belt, ensuring its normal service life, meeting enterprise needs, and promoting widespread adoption.

[0004] Traditional fixtures often rely on manual adjustment of workpiece position, which is prone to human error during operation, such as visual judgment deviations and hand tremors, leading to inaccurate workpiece positioning, offset, and tilting. This can cause misalignment of bonding electrodes and circuits, increasing product defect rates. Furthermore, manual positioning is cumbersome and time-consuming, incompatible with the continuous production rhythm of fully automated bonding machines, reducing overall production efficiency and failing to meet the demands of large-scale, high-efficiency electronic component production. While some automated fixtures attempt to achieve positioning functions, their simple transmission structure design suffers from uneven clamping force and insufficient positioning accuracy, making it difficult to stably center and position workpieces of different sizes. Moreover, they are prone to mechanical wear during long-term, high-frequency use, leading to a gradual increase in positioning error and affecting production stability and product quality. Therefore, to address these issues, a new anti-offset positioning fixture for fully automated bonding machines is proposed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where traditional binding machine fixtures rely on manual adjustment of the workpiece position, which can easily lead to workpiece displacement due to inaccurate operation and affect the binding quality. Therefore, this invention proposes an anti-displacement positioning fixture for a fully automatic binding machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an anti-offset positioning fixture for a fully automatic binding machine, comprising a mounting plate, a fixing plate fixedly connected to the surface of the mounting plate, a first servo motor fixedly connected to one side of the fixing plate, a bidirectional threaded rod fixedly connected to the output end of the first servo motor, two connecting plates threadedly connected to the arc surface of the bidirectional threaded rod, four sliding holes opened on the surface of the mounting plate, sliding plates slidably connected to the inner surface of the sliding holes, the four sliding plates being grouped in pairs, and a push plate fixedly connected to the side of the two groups of sliding plates that are close to each other.

[0007] The effect achieved by the above components is as follows: the first servo motor drives the bidirectional threaded rod to rotate, which in turn drives the connecting plate, slide plate and push plate to move. The two push plates approach synchronously from both sides. By utilizing the precision of mechanical transmission, the workpiece is quickly and stably pushed to the center position of the mounting plate, ensuring that the workpiece is at the preset reference point during the binding operation. This improves the binding accuracy and consistency, and avoids the problem that traditional binding machine fixtures rely on manual adjustment of the workpiece position, which is prone to workpiece displacement due to inaccurate operation, thus affecting the binding quality.

[0008] Preferably, L-shaped plates are fixedly connected to both sides of the mounting plate, a second servo motor is fixedly connected to one side of the L-shaped plate, a lead screw is fixedly connected to the output end of the second servo motor, and a threaded cylinder is threadedly connected to the arc surface of the lead screw.

[0009] The aforementioned components achieve the following effects: by driving the lead screw to rotate via the second servo motor, the threaded cylinder moves linearly, allowing for secondary precise positioning of the workpiece from both sides of the mounting plate. Combined with the main positioning structure's bidirectional threaded rod and push plate, it achieves dual constraints of center positioning and lateral positioning, adapting to long and irregularly shaped workpieces and improving positioning accuracy and stability. The automated control of the servo motor allows for flexible adjustment of the limit position, adapting to workpieces of different sizes and enhancing the versatility of the fixture.

[0010] Preferably, protective pads are fixedly connected to the sides of the two push plates that are close to each other.

[0011] The effects achieved by the above components are as follows: the protective pad increases the friction between the push plate and the workpiece, preventing the workpiece from sliding due to vibration or external force when the push plate clamps the workpiece, thus ensuring the stability of the centering positioning; at the same time, the flexible material can buffer the clamping force, avoid hard contact damage to the workpiece surface, and improve the protection of precision workpieces.

[0012] Preferably, a silicone limiting block is fixedly connected to one end of the threaded cylinder.

[0013] The effects achieved by the above components are as follows: the silicone limiting block has elasticity and flexibility, which can prevent hard collision damage to the workpiece when the threaded cylinder pushes the limiting block; the elastic deformation can absorb vibration and enhance the buffering of the limiting structure; at the same time, the silicone friction helps to fix the workpiece, improving the stability and protection of the lateral limiting.

[0014] Preferably, the size of the sliding plate is adapted to the size of the sliding hole.

[0015] The effects achieved by the above components are as follows: the slide plate and the sliding hole are precisely matched, providing stable guidance for the movement of the push plate, preventing the push plate from shifting or jamming during the clamping process, ensuring the accuracy of the bidirectional threaded rod transmission, ensuring that the push plate always moves in a straight line, and improving the reliability of the centering positioning.

[0016] Preferably, an anti-slip pad is fixedly connected to the surface of the mounting plate.

[0017] The effects achieved by the above components are: increasing the friction between the workpiece and the mounting plate, preventing the workpiece from shifting due to vibration before being clamped by the push plate or during the binding operation; and, in conjunction with the push plate clamping, forming a three-dimensional anti-slip structure from the bottom and sides, further enhancing the workpiece fixing effect and ensuring positioning accuracy.

[0018] Preferably, two buffer pads are fixedly connected to the bottom of the mounting plate.

[0019] The effects achieved by the above components are as follows: the buffer pad absorbs the vibration of the fixture mounting surface, such as the worktable of the binding machine, reducing the transmission of external vibration to the workpiece and preventing the workpiece from shifting due to vibration during equipment operation; at the same time, the flexible buffer can protect the contact between the mounting plate and the worktable, reduce wear and tear over long-term use, and improve the overall stability of the fixture.

[0020] In summary, the beneficial effects of this utility model are as follows: 1. In this utility model, a servo motor drives a bidirectional threaded rod to rotate, which in turn moves the connecting plate, the sliding plate, and the push plate. The two push plates approach each other synchronously from both sides. By utilizing the precision of mechanical transmission, the workpiece is quickly and stably pushed to the center position of the mounting plate, ensuring that the workpiece is at the preset reference point during the binding operation. This improves the binding accuracy and consistency, and avoids the problem that traditional binding machine fixtures rely on manual adjustment of the workpiece position, which can easily lead to workpiece displacement due to inaccurate operation and affect the binding quality. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 In this utility model Figure 1 Another structural diagram from a different angle; Figure 3 This is a schematic diagram of the L-shaped plate in this utility model; Figure 4 This is a schematic diagram of the connecting plate in this utility model.

[0022] Legend: 1. Mounting plate; 2. Fixing plate; 3. First servo motor; 4. Two-way threaded rod; 5. Connecting plate; 6. Sliding hole; 7. Slide plate; 8. L-shaped plate; 9. Second servo motor; 10. Lead screw; 11. Threaded cylinder; 12. Protective pad; 13. Silicone limit block; 14. Anti-slip pad; 15. Buffer pad; 16. Push plate. Detailed Implementation

[0023] Reference Figure 1-4As shown, this utility model provides a technical solution: an anti-offset positioning fixture for a fully automatic binding machine, including a mounting plate 1, a fixing plate 2 fixedly connected to the surface of the mounting plate 1, a first servo motor 3 fixedly connected to one side of the fixing plate 2, a bidirectional threaded rod 4 fixedly connected to the output end of the first servo motor 3, two connecting plates 5 threadedly connected to the arc surface of the bidirectional threaded rod 4, four sliding holes 6 opened on the surface of the mounting plate 1, sliding plates 7 slidably connected to the inner surface of the sliding holes 6, the four sliding plates 7 are in pairs, a push plate 16 fixedly connected to the side of the two pairs of sliding plates 7 that are close to each other, L-shaped plates 8 fixedly connected to both sides of the mounting plate 1, a second servo motor 9 fixedly connected to one side of the L-shaped plate 8, and the output end of the second servo motor 9 is fixedly connected to... A lead screw 10 is connected to the workpiece, and a threaded cylinder 11 is threaded to the arc surface of the lead screw 10. The lead screw 10 is driven to rotate by a second servo motor 9, which in turn drives the threaded cylinder 11 to move linearly. This allows for secondary precise positioning of the workpiece from both sides of the mounting plate 1. Combined with the main positioning structure, the bidirectional threaded rod 4 and the push plate 16, it achieves dual constraints of center positioning and lateral limiting, adapting to long and irregularly shaped workpieces and improving positioning accuracy and stability. The automated control of the servo motor allows for flexible adjustment of the limiting position, adapting to workpieces of different sizes and enhancing the versatility of the fixture. Protective pads 12 are fixedly connected to the sides of the two push plates 16 that are close to each other. The protective pads 12 increase the friction between the push plates 16 and the workpiece, preventing the workpiece from being damaged by vibration or external force when the push plates 16 are clamping it. Sliding ensures the stability of the centered positioning; at the same time, the flexible material can buffer the clamping force, avoid hard contact damage to the workpiece surface, and improve the protection of precision workpieces. One end of the threaded cylinder 11 is fixedly connected to a silicone limiting block 13. The silicone limiting block 13 has elasticity and flexibility. When the threaded cylinder 11 pushes the limiting block, it can avoid hard collision damage to the workpiece; the elastic deformation can absorb vibration and enhance the buffering of the limiting structure. At the same time, the friction of silicone is used to assist in fixing the workpiece, improving the stability and protection of the lateral limiting. The size of the sliding plate 7 is adapted to the size of the sliding hole 6. The precise adaptation of the sliding plate 7 and the sliding hole 6 provides a stable guide for the movement of the push plate 16, avoids the push plate 16 from shifting or jamming during the clamping process, and ensures the precision of the bidirectional threaded rod 4 transmission. To ensure the push plate 16 always moves in a straight line and improve the reliability of centering positioning, the surface of the mounting plate 1 is fixedly connected with anti-slip pads 14, which increases the friction between the workpiece and the mounting plate 1 and prevents the workpiece from shifting due to vibration before being clamped by the push plate 16 or during the binding operation. In conjunction with the clamping of the push plate 16, a three-dimensional anti-slip is formed from the bottom and sides, further enhancing the workpiece fixing effect and ensuring positioning accuracy. The bottom of the mounting plate 1 is fixedly connected with two buffer pads 15. The buffer pads 15 absorb the vibration of the fixture mounting surface, such as the worktable of the binding machine, reducing the transmission of external vibration to the workpiece and preventing the workpiece from shifting due to vibration of the equipment operation. At the same time, the flexible buffer can protect the contact between the mounting plate 1 and the worktable, reduce wear and tear over long-term use, and improve the overall stability of the fixture.

[0024] Working principle: The first servo motor 3 on the fixed plate 2 serves as the power source, driving the bidirectional threaded rod 4 to rotate. Due to the symmetrical thread characteristics of the bidirectional threaded rod 4, it can drive the two connecting plates 5 connected to it to move in opposite or the same direction along the threaded rod. The connecting plate 5 is rigidly connected to the sliding plate 7, and the sliding plate 7 is precisely matched with the sliding hole 6 opened on the surface of the mounting plate 1, which can provide stable linear guidance for the movement of the push plate 16, thereby making the two sets of push plates 16 move closer or further away synchronously. The push plate 16 applies force from both sides of the workpiece, and with the help of precise displacement control of mechanical transmission, quickly pushes the workpiece to the geometric center position of the mounting plate 1, ensuring that the reference of the workpiece and the binding head, electrodes and other components is accurately aligned during the binding operation, effectively solving the problem of easy manual positioning. To address the issue of errors and improve binding accuracy and consistency, preventing workpiece misalignment due to inaccurate manual operation that could affect binding quality, the second servo motors 9 on the L-shaped plates 8 on both sides of the mounting plate 1 are activated, driving the lead screw 10 to rotate. The lead screw 10 and the threaded cylinder 11 are connected by a threaded transmission, causing the threaded cylinder 11 to move linearly along the axis of the lead screw 10. The silicone limiting block 13 at the end of the threaded cylinder 11 then applies a flexible limiting force from the side of the workpiece. This works in conjunction with the clamping action of the push plate 16 in the main positioning system to form a three-dimensional constraint mode of "centering positioning + lateral limiting". For long and irregularly shaped workpieces, the lateral limiting position can be flexibly changed by adjusting the stroke of the second servo motor 9, enhancing the fixture's adaptability to workpieces of different sizes and shapes. To further enhance positioning accuracy and stability and adapt to the binding requirements of various workpieces, the protective pad 12 on the surface of the push plate 16 is made of flexible material. On the one hand, it increases the friction with the workpiece, preventing the workpiece from sliding due to vibration or external forces during the clamping process, thus ensuring the stability of the centering positioning. On the other hand, the flexible material can buffer the clamping force, avoiding hard contact between the push plate 16 and the workpiece, which could damage the surface of the precision workpiece. The slide plate 7 and the sliding hole 6 are precisely matched, providing a linear guide function for the movement of the push plate 16, preventing the push plate 16 from deviating or jamming during the clamping process, ensuring the accuracy of the bidirectional threaded rod 4 transmission, ensuring reliable centering positioning, and enabling the push plate 16 to always move in a straight line and accurately push the workpiece to the correct position. The buffer pad 15 at the bottom of the mounting plate 1, located in the center, absorbs the vibration generated by the worktable of the binding machine, reducing the transmission of external vibration to the workpiece and preventing the workpiece from shifting due to vibration during the binding operation. At the same time, the buffer pad 15 can buffer the contact between the mounting plate 1 and the worktable, reduce wear during long-term use, improve the overall stability of the fixture, and ensure the long-term reliable operation of the equipment. The anti-slip pad 14 on the surface of the mounting plate 1 increases the friction between the workpiece and the mounting plate 1, forming an auxiliary fixing effect on the workpiece from the bottom. Together with the side clamping of the push plate 16, a three-dimensional anti-slip system of "bottom-side" is constructed, which further enhances the fixing effect of the workpiece, ensures positioning accuracy, and prevents the workpiece from shifting due to vibration before being clamped by the push plate 16 or during the binding operation.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A positioning fixture for preventing offset in a fully automatic binding machine, comprising a mounting plate (1), characterized in that: A fixing plate (2) is fixedly connected to the surface of the mounting plate (1). A first servo motor (3) is fixedly connected to one side of the fixing plate (2). A bidirectional threaded rod (4) is fixedly connected to the output end of the servo motor. Two connecting plates (5) are threadedly connected to the arc surface of the bidirectional threaded rod (4). Four sliding holes (6) are opened on the surface of the mounting plate (1). A sliding plate (7) is slidably connected to the inner surface of the sliding hole (6). The four sliding plates (7) are in pairs. A push plate (16) is fixedly connected to the side of the two pairs of sliding plates (7) that are close to each other.

2. The anti-offset positioning fixture of a full-automatic binding machine according to claim 1, characterized in that: Both sides of the mounting plate (1) are fixedly connected to L-shaped plates (8), and one side of the L-shaped plate (8) is fixedly connected to a second servo motor (9). The output end of the second servo motor (9) is fixedly connected to a lead screw (10), and the arc surface of the lead screw (10) is threadedly connected to a threaded cylinder (11).

3. The anti-deviation positioning fixture for a fully automatic binding machine according to claim 1, characterized in that: Protective pads (12) are fixedly connected to the sides of the two push plates (16) that are close to each other.

4. The anti-deviation positioning fixture for a fully automatic binding machine according to claim 2, characterized in that: A silicone limiting block (13) is fixedly connected to one end of the threaded cylinder (11).

5. The anti-deviation positioning fixture for a fully automatic binding machine according to claim 1, characterized in that: The dimensions of the slide plate (7) are adapted to the dimensions of the sliding hole (6).

6. The anti-deviation positioning fixture for a fully automatic binding machine according to claim 1, characterized in that: The surface of the mounting plate (1) is fixedly connected with an anti-slip pad (14).

7. The anti-deviation positioning fixture for a fully automatic binding machine according to claim 1, characterized in that: Two buffer pads (15) are fixedly connected to the bottom of the mounting plate (1).

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