Pretreatment device for chip visual inspection

Abstract

The utility model discloses a pretreatment device for visual detection of chips, which belongs to the technical field of chip detection and comprises a support, a conveying structure fixedly mounted on the top surface of the support, a fixed table fixedly mounted on one side of the support, and a mechanical arm fixedly mounted on the top surface of the fixed table. A fixing structure used for clamping a chip is fixedly installed at one end of the mechanical arm, a detection device used for conducting visual detection on the chip is fixedly installed on the top face of the conveying structure, the fixing structure is arranged, an air pump is connected with an air outlet pipe to drive a suction cup to conduct adsorption grabbing on the chip, a non-contact adsorption grabbing mode is adopted, and therefore the chip can be automatically detected. Physical damage possibly caused by direct contact between a clamp and the surface of a chip is thoroughly eliminated, meanwhile, the control ring is arranged to change the overall suction caliber of the suction cup according to the size of the chip, so that chips of different specifications can be stably sucked, the tension plate is arranged to push the interior of the suction cup, and stable supporting force can be continuously provided for the interior of the suction cup; therefore, the chip can be adsorbed continuously and stably.

Description

Technical Field

[0001] The utility model relates to the technical field of chip detection, in particular to a pretreatment device for chip vision detection. Background Art

[0002] Chip vision detection is mainly used for preliminary optical detection of chips to identify basic information and potential defects of chips, so as to improve the efficiency, accuracy and automation level of chip detection.

[0003] A Chinese patent discloses a pretreatment device for chip detection (publication number: CN215005759U). The patent includes a frame body. A machine table is installed on the top of the frame body. A conveying mechanism is installed on the top of the machine table. A steering column is arranged on the top of the machine table close to the rear side of the conveying mechanism. One end of the steering column is fixedly connected to the top of the machine table, and a controller is installed at the other end of the steering column. An optoelectronic detection mechanism and a turning mechanism are arranged on the top of the machine table from left to right close to the upper side of the conveying mechanism. However, this patent grabs and flips the chip by setting a flipping robotic arm for clamping. Since the chip itself has a small size and a thin thickness and lies flat on the surface of the conveyor belt, it is not convenient to directly clamp the chip, and scratches or indentations may be caused on the chip surface during the contact process. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a pretreatment device for chip vision detection to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pretreatment device for chip vision detection includes a bracket. A conveying structure is fixedly installed on the top surface of the bracket. A fixed table is fixedly installed on one side of the bracket. A robotic arm is fixedly installed on the top surface of the fixed table. A fixing structure for clamping the chip is fixedly installed at one end of the robotic arm. A detection device for visually detecting the chip is fixedly installed on the top surface of the conveying structure.

[0007] The fixing structure includes an air pump. An air outlet pipe is fixedly installed on one side of the air pump. A suction cup for sucking the chip is fixedly installed at one end of the air outlet pipe. The suction cup is set as a folded double layer. One end of the inner suction cup is fixedly connected to the air outlet pipe. A control ring for driving the outer suction cup to move up and down is fixedly installed at one end of the outer suction cup, and the control ring is threadedly sleeved on the outside of the air outlet pipe. A clamping structure for assisting in fixing the chip is rotatably installed on the outer surface of the air outlet pipe. The overall adsorption diameter of the suction cup is changed by rotating the control ring to drive the outer suction cup to move up and down along the air outlet pipe.

[0008] As a further solution of the utility model, in order to ensure that the suction cup remains in an outwardly expanded state after changing the aperture, a fixed pipe is fixedly installed on the inner wall of the inner suction cup. A tension plate for maintaining the expansion of the suction cup is installed outside the fixed pipe, and the tension plate is fixedly connected to the inner wall of the inner suction cup. A thrust spring is installed in the gap between the tension plate and the fixed pipe.

[0009] As a further solution of the utility model, the clamping structure includes a serrated ring which is rotatably sleeved on the outer surface of the air outlet pipe. Two rotating plates are fixedly installed on the outer wall of the air outlet pipe. A push rod is rotatably installed on one side of each rotating plate. One end of the push rod is rotatably installed with a moving frame, and a clamp is fixedly installed inside the moving frame.

[0010] As a further solution of the utility model, in order to ensure that the moving frame can move smoothly and horizontally, a fixed rod is slidably inserted into the moving frame. One end of the fixed rod is fixedly connected with a fixed ring, and the fixed ring is fixedly sleeved on the outer surface of the air outlet pipe. A positioning plate for preventing the moving frame from detaching is fixedly installed at the other end of the fixed rod.

[0011] As a further solution of the utility model, silica gel plates for preventing damage to the edge of the chip are installed on the corresponding sides of the two clamps. The silica gel plates and the clamps are connected by damping springs, and the damping springs are located inside the clamps.

[0012] As a further solution of the utility model, a turning motor for driving the fixed structure to turn is fixedly installed at one end of the robotic arm close to the air pump. The output end of the turning motor is fixedly installed with a rotating shaft, and the rotating shaft is fixedly connected with the air pump.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. When the utility model is used, by setting the fixed structure, the air pump is connected to the air outlet pipe to drive the suction cup to adsorb and grab the chip. The non-contact adsorption and grabbing method completely eliminates the possible physical damage caused by the direct contact between the clamp and the chip surface, ensures the performance stability of the chip. At the same time, a control ring is provided to facilitate changing the overall adsorption aperture of the suction cup according to the chip size, enabling different specifications of chips to be stably adsorbed, reducing the risk of operation errors and chip damage caused by size mismatch, ensuring uniform force on the chip surface, and effectively reducing the risk of chip cracking or deformation due to uneven force. A tension plate is also provided to push the inside of the suction cup, which can continuously provide a stable supporting force inside the suction cup for the continuous and stable adsorption of the chip.

[0015] 2. When the present utility model is in use, after the chuck adsorbs and grabs the chip through the fixture, the fixture is used to assist the chuck in fixing and clamping the edge of the chip, so as to avoid scratching the surface of the chip, protect the integrity of the chip surface. At the same time, the fixtures are arranged on both sides of the chuck, so as to avoid direct contact with the chip surface by clamping both sides of the chip, effectively reducing the risk of the chip cracking or deforming due to uneven stress, ensuring the position accuracy of the chip during picking and placing. Silicone plates for preventing damage to the chip edge are also arranged on the corresponding sides of the two fixtures, further ensuring the integrity of the chip. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of a preprocessing device for chip vision detection.

[0017] Figure 2 It is a structural diagram of the flipping motor in a preprocessing device for chip vision detection.

[0018] Figure 3 It is a structural diagram of the fixing structure in a preprocessing device for chip vision detection.

[0019] Figure 4 It is a sectional view of the fixing structure in a preprocessing device for chip vision detection.

[0020] Figure 5 It is a structural diagram of the clamping structure in a preprocessing device for chip vision detection.

[0021] Figure 6 It is a detailed view of the clamping structure in a preprocessing device for chip vision detection.

[0022] In the figure: 1. Bracket; 2. Conveyor structure; 3. Fixed table; 4. Manipulator; 5. Fixing structure; 501. Air pump; 502. Air outlet pipe; 503. Suction cup; 504. Control ring; 505. Fixed pipe; 506. Tension plate; 507. Thrust spring; 508. Silicone strip; 6. Detection device; 7. Clamping structure; 701. Serrated ring; 702. Rotating plate; 703. Push rod; 704. Moving frame; 705. Fixture; 706. Fixed rod; 707. Fixed ring; 708. Motor; 709. Rotating rod; 710. Gear; 711. Silicone plate; 712. Damping spring; 8. Flipping motor; 9. Rotating shaft; 10. Fixed frame; 11. Monitor. Detailed Implementation Manner

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1: Please refer to Figure 1 -

[0025] Figure 4 , a preprocessing device for chip vision detection, including a bracket 1. A conveying structure 2 is fixedly installed on the top surface of the bracket 1. A fixing table 3 is fixedly installed on one side of the bracket 1. A robotic arm 4 is fixedly installed on the top surface of the fixing table 3. A fixing structure 5 for clamping the chip is fixedly installed at one end of the robotic arm 4. A detection device 6 for visually detecting the chip is fixedly installed on the top surface of the conveying structure 2;

[0026] The fixing structure 5 includes an air pump 501. An air outlet pipe 502 is fixedly installed on one side of the air pump 501. A suction cup 503 for sucking the chip is fixedly installed at one end of the air outlet pipe 502. The suction cup 503 is set as a folded double layer. One end of the inner layer suction cup 503 is fixedly connected to the air outlet pipe 502. A control ring 504 for driving the outer layer suction cup 503 to move up and down is fixedly installed at one end of the outer layer suction cup 503. And the control ring 504 is threadedly sleeved on the outside of the air outlet pipe 502. A clamping structure 7 for assisting in fixing the chip is rotatably installed on the outer surface of the air outlet pipe 502. By rotating the control ring 504 to drive the outer layer suction cup 503 to move up and down along the air outlet pipe 502 to change the overall adsorption diameter of the suction cup 503, so as to facilitate the suction cup 503 to adjust its adsorption range for chips of different sizes, to ensure uniform force on the chip surface, and effectively reduce the risk of the chip cracking or deforming due to uneven force;

[0027] The air pump 501 is fixedly installed at one end of the robotic arm 4. Anti-slip grooves for enhancing friction are provided on the outer wall of the air outlet pipe 502;

[0028] To ensure that the inner suction cup 503 remains in an outward-expanded state after changing its diameter, a fixed tube 505 is fixedly installed on the inner wall of the inner suction cup 503. A tension plate 506 for maintaining the expansion of the suction cup 503 is installed outside the fixed tube 505, and the tension plate 506 is fixedly connected to the inner wall of the inner suction cup 503. A thrust spring 507 is installed in the gap between the tension plate 506 and the fixed tube 505. Both ends of the thrust spring 507 are rotatably connected to the tension plate 506 and the fixed tube 505 respectively. The number of the tension plates 506 and the thrust springs 507 is set to six groups in total, and they are symmetrically and evenly distributed on the inner wall of the inner suction cup 503. The main function of the fixed tube 505 is to effectively guide and gather, forming a more concentrated and powerful suction area, which helps to reduce the chip offset or shedding phenomenon caused by uneven air flow, so as to improve the adsorption stability and accuracy;

[0029] A silicone strip 508 for preventing scratching of the chip surface is fixedly installed at one end of the tension plate 506 away from the air outlet pipe 502, and the silicone strip 508 is fixedly connected to the inner wall of the inner suction cup 503.

[0030] Please refer to Figure 2 、 Figure 3 、 Figure 5 -

[0031] Figure 6 The clamping structure 7 includes a serrated ring 701. The serrated ring 701 is rotatably sleeved on the outer surface of the air outlet pipe 502. Two rotating plates 702 are fixedly installed on the outer wall of the air outlet pipe 502. A push rod 703 is rotatably installed on one side of each rotating plate 702. One end of the push rod 703 is rotatably installed with a moving frame 704. A clamp 705 is fixedly installed inside the moving frame 704 through a connecting rod;

[0032] One end of the push rod 703 is rotatably connected to the rotating plate 702 through a cross bar inserted into its interior, and the other end of it is fixedly connected to the outer wall of the moving frame 704 through a connecting piece. The serrated ring 701 drives the rotating plate 702 to rotate, so that the push rod 703 pushes the two moving frames 704 to drive the clamps 705 to expand or contract synchronously to both sides to clamp and fix the edge of the chip, so as to avoid direct contact with the chip surface, and also helps to assist in enhancing the fixing effect of the suction cup 503;

[0033] To ensure that the moving frame 704 can move smoothly and horizontally, a fixed rod 706 is slidably inserted into the moving frame 704. One end of the fixed rod 706 is fixedly connected to a fixed ring 707, and the fixed ring 707 is fixedly sleeved on the outer surface of the air outlet pipe 502. A positioning plate for preventing the moving frame 704 from detaching is fixedly installed at the other end of the fixed rod 706;

[0034] The outer wall of the air pump 501 is fixedly installed with a motor 708 for providing power. The output end of the motor 708 is fixedly installed with a rotating rod 709. One end of the rotating rod 709 is fixedly installed with a gear 710 for driving the sawtooth ring 701 to rotate, and the gear 710 meshes with the sawtooth ring 701.

[0035] Silica gel plates 711 for preventing damage to the edges of the chip are installed on the corresponding sides of the two jigs 705. The silica gel plates 711 and the jigs 705 are connected by damping springs 712, and the damping springs 712 are located inside the jigs 705.

[0036] Embodiment 2: Please refer to Figure 1 , one end of the robotic arm 4 close to the air pump 501 is fixedly installed with a flipping motor 8 for driving the fixed structure 5 to flip. The output end of the flipping motor 8 is fixedly installed with a rotating shaft 9, and the rotating shaft 9 is fixedly connected to the air pump 501.

[0037] Please refer to Figure 1 , a fixing frame 10 is fixedly installed on the top surface of the bracket 1, and a monitor 11 for detecting the front and back sides of the chip is fixedly installed on the bottom surface of the fixing frame 10.

[0038] Please refer to Figure 1 , a driving roller and a driven roller are sequentially arranged inside the conveying structure 2 from right to left. A conveyor belt is sleeved on the outside of the driving roller and the driven roller, and a driving motor for driving the conveyor belt to rotate is installed at one end of the driving roller.

[0039] The working principle of the present utility model is as follows:

[0040] First, the chip is conveyed to the lower part of the fixing frame 10 through the conveying structure 2, and the monitor 11 is used to detect whether it is face up. If it is face down, the robotic arm 4 drives the fixed structure 5 close to the chip. The motor 708 is started to connect the rotating rod 709 to drive the gear 710 to rotate. The gear 710 meshes with the sawtooth ring 701 to drive the rotating plate 702 to rotate, so that the push rod 703 pushes the two moving frames 704 to drive the jigs 705 to expand synchronously to both sides to avoid scratching the surface of the chip. The air pump 501 is started to connect the air outlet pipe 502 to drive the suction cup 503 to adsorb and grab the chip. At the same time, the two groups of jigs 705 contract synchronously after the chip moves away from the surface of the conveying structure 2, and clamp it on the edge of the chip to further ensure the clamping and fixing effect of the fixed structure 5. Then, the flipping motor 8 is connected to the rotating shaft 9 to drive the fixed structure 5 to rotate, so that the chip is flipped to be face up. Finally, the robotic arm 4 places the chip back on the surface of the conveying structure 2 and continues to convey it into the detection device 6 for visual inspection. In addition, the rotation control ring 504 drives the outer suction cup 503 to move up and down along the air outlet pipe 502 to change the overall adsorption diameter of the suction cup 503, so as to facilitate the suction cup 503 to adjust its adsorption range for chips of different sizes.

[0041] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A preprocessing device for chip vision detection, comprising a bracket (1), characterized in that, A conveying structure (2) is fixedly installed on the top surface of the bracket (1). A fixed platform (3) is fixedly installed on one side of the bracket (1). A robotic arm (4) is fixedly installed on the top surface of the fixed platform (3). A fixing structure (5) for clamping a chip is fixedly installed at one end of the robotic arm (4). A detection device (6) for visually inspecting the chip is fixedly installed on the top surface of the conveying structure (2). The fixing structure (5) includes an air pump (501). An air outlet pipe (502) is fixedly installed on one side of the air pump (501). A suction cup (503) for sucking the chip is fixedly installed at one end of the air outlet pipe (502). The suction cup (503) is arranged as a folded double layer. One end of the inner suction cup (503) is fixedly connected to the air outlet pipe (502). A control ring (504) for driving the outer suction cup (503) to move up and down is fixedly installed at one end of the outer suction cup (503). And the control ring (504) is threadedly sleeved on the outer surface of the air outlet pipe (502). A clamping structure (7) for assisting in fixing the chip is rotatably installed on the outer surface of the air outlet pipe (502). By rotating the control ring (504) to drive the outer suction cup (503) to move up and down along the air outlet pipe (502), the overall adsorption diameter of the suction cup (503) is changed.

2. The preprocessing device for chip vision detection according to claim 1, characterized in that, In order to ensure that the suction cup (503) remains in an outward-expanded state after changing the diameter, a fixing pipe (505) is fixedly installed on the inner wall of the inner suction cup (503). A tension plate (506) for maintaining the expansion of the suction cup (503) is installed outside the fixing pipe (505). And the tension plate (506) is fixedly connected to the inner wall of the inner suction cup (503). A thrust spring (507) is installed in the gap between the tension plate (506) and the fixing pipe (505).

3. The preprocessing device for chip vision detection according to claim 1, wherein The clamping structure (7) includes a serrated ring (701). The serrated ring (701) is rotatably sleeved on the outer surface of the air outlet pipe (502). Two rotating plates (702) are fixedly installed on the outer wall of the air outlet pipe (502). A push rod (703) is rotatably installed on one side of each rotating plate (702). A moving frame (704) is rotatably installed at one end of the push rod (703). A clamp (705) is fixedly installed inside the moving frame (704).

4. The preprocessing device for chip vision detection according to claim 3, characterized in that, In order to ensure that the moving frame (704) can move smoothly and horizontally, a fixing rod (706) is slidably inserted into the moving frame (704). One end of the fixing rod (706) is fixedly connected to a fixing ring (707). And the fixing ring (707) is fixedly sleeved on the outer surface of the air outlet pipe (502). A positioning plate for preventing the moving frame (704) from detaching is fixedly installed at the other end of the fixing rod (706).

5. The preprocessing device for chip vision detection according to claim 3, characterized in that, Silicone plates (711) for preventing damage to the edge of the chip are installed on the opposite sides of the two clamps (705). The silicone plates (711) and the clamps (705) are connected by damping springs (712), and the damping springs (712) are located inside the clamps (705).

6. The preprocessing device for chip vision detection according to claim 1, wherein, One end of the robotic arm (4) close to the air pump (501) is fixedly installed with a flipping motor (8) for driving the fixed structure (5) to flip. The output end of the flipping motor (8) is fixedly installed with a rotating shaft (9), and the rotating shaft (9) is fixedly connected to the air pump (501).

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