A chip feeding device for a chip mounter

Abstract

This invention discloses a chip mounting feeding device for a chip mounter, comprising a conveyor and a base. Multiple rubber ring partitions are evenly spaced on the conveyor belt of the conveyor, dividing the conveyor belt into transport channels for components. A correction structure is installed on the conveyor to correct the component's deviation, ensuring it is positioned in the center of the transport channel. A moving component is mounted on the base, and a receiving structure is connected to the moving component. A placement plate is fixedly connected to one end of the conveyor near the base. This invention, by installing a correction structure on the conveyor, uses a combination of symmetrically arranged "eight"-shaped correction rods and springs to adaptively push the component to the center of the transport channel during transport. This achieves stepless automatic centering without the need for external sensors or a power source, effectively avoiding pickup deviations caused by component misalignment and significantly improving the accuracy of subsequent receiving and mounting.

Description

Technical Field

[0001] This invention relates to the field of surface mount technology, and more specifically, to a chip feeding device for a chip mounter. Background Technology

[0002] Pick and place machines are the core equipment in surface mount technology (SMT), used to accurately mount electronic components onto printed circuit boards (PCBs). As an important part of the pick and place machine, the component feeding equipment is responsible for stably and orderly transporting components from the feeding device to the placement station. Currently, common component feeding equipment includes belt conveyors, vibratory feeders, and tube feeders.

[0003] In actual production, when components move on conveyor belts or other conveyor tracks, they are easily deviated from the center of the conveyor track due to factors such as vibration and friction. This deviation will lead to inaccurate subsequent pick-up positions, or even cause placement deviation or pick-up failure, affecting placement quality and efficiency. Many components have specific pin arrangement and orientation requirements, and lack automatic detection and correction functions for component pin orientation. Once the component orientation is incorrect, direct placement by the pick-and-place machine will cause short circuits or functional failures on the circuit board, which usually requires manual screening or the installation of an expensive vision positioning system. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a chip mounting feeding device for a chip mounter. It solves the problem that during actual production, components moving on conveyor belts or other conveyor tracks are easily deviated from the center of the conveyor due to vibration, friction, and other factors. This deviation leads to inaccurate subsequent pickup positions, and may even cause placement deviations or pick-up failures, affecting mounting quality and efficiency. Many components have specific pin arrangement and orientation requirements, but there is a lack of automatic detection and correction functions for component pin orientation. If the component orientation is incorrect, direct placement by the chip mounter can cause short circuits or functional failures on the circuit board, usually requiring manual screening or the installation of expensive vision positioning systems.

[0005] To achieve the above objectives, the present invention provides a chip mounting feeding device for a chip mounter, comprising a conveyor and a base. Multiple rubber ring partitions are evenly spaced along the conveyor belt of the conveyor, dividing the conveyor belt into transport channels for conveying components. The conveyor is equipped with a correction structure, which corrects the deviation of the components so that they are placed in the middle of the conveyor channel. A movable component is provided on the base, and a receiving structure is connected to the movable component. A placement plate is fixedly connected to one end of the conveyor near the base. When the movable component moves the receiving structure onto the placement plate, the components fall from the conveyor onto the receiving structure. The base is equipped with a detection component, which detects the components that fall on the receiving structure and detects the pin positions on the components.

[0006] Preferably, the correction structure includes a mounting frame fixedly installed on the conveyor, a connecting frame fixedly connected to the mounting frame, and multiple correction rods symmetrically and rotatably installed on the connecting frame. The two corresponding correction rods have an "eight" structure, and springs are fixedly connected to both the correction rods and the inner wall of the connecting frame.

[0007] Preferably, the receiving structure includes multiple base plate seats, with inclined plates connected to the base plate seats. One end of the inclined plate facing away from the base plate seat abuts against the conveyor belt. A receiving circular plate is installed on the base plate seat. A square block is provided on the lower end face of the receiving circular plate. The receiving circular plate includes an inner circular plate and an outer ring plate. The inner circular plate is rotatably installed in the outer ring plate. The multiple base plate seats are fixed as a whole by a connecting frame.

[0008] Preferably, the square block has an installation cavity, in which a first motor is fixedly installed. The output end of the first motor is fixedly connected to a rotating shaft, and a small gear is fixedly installed on the rotating shaft. The small gear meshes with a large gear, and a rotating rod is fixedly installed at the center of the large gear. The lower end of the rotating rod is rotatably connected to the inner wall of the installation cavity, and the upper end of the rotating rod penetrates the upper end face of the square block and is fixed to the lower end face of the inner circular plate.

[0009] Preferably, a connecting cavity is provided on the substrate base, a second motor is fixedly installed in the connecting cavity, a rotating rod is fixedly connected to the output end of the second motor, and the end of the rotating rod opposite to the second motor is fixedly connected to the outer ring plate.

[0010] Preferably, the moving component includes two mounting plates symmetrically fixedly mounted on the base and a third motor fixedly mounted on the mounting plates. The output end of the third motor is fixedly connected to a ball screw, a ball screw sleeve is threaded onto the ball screw, an mounting head is fixedly connected to the ball screw sleeve, a first cylinder is fixedly mounted on the mounting head, a connecting block is fixedly connected to the telescopic end of the first cylinder, and the connecting block is fixedly connected to the base plate.

[0011] Preferably, the detection assembly includes a gantry frame fixedly connected to the base, a second cylinder fixedly mounted on the gantry frame, an installation strip fixedly connected to the telescopic end of the second cylinder, and multiple detectors mounted on the installation strip to detect the pin positions of components. A collection frame is fixedly connected to the upper surface of the base, and the collection frame is located directly below the gantry frame.

[0012] Preferably, a fixing frame is fixedly connected to the base, and multiple No. 3 cylinders are installed on the fixing frame. The telescopic end of the No. 3 cylinder is fixedly connected to a negative pressure suction head, which adsorbs the components.

[0013] Preferably, the conveyor is provided with a hopper at the end opposite to the placement plate, and the components fall from the hopper onto the conveyor belt.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Install a correction structure on the conveyor. Through the cooperation of the correction rods and springs arranged symmetrically in a figure-eight shape, the components are adaptively pushed to the center of the conveyor during the conveying process. Without the need for external sensors or power sources, stepless automatic centering can be achieved, which effectively avoids the picking deviation caused by component offset and significantly improves the accuracy of subsequent acceptance and mounting. 2. By setting the detection component to cooperate with the inner circular plate rotation drive mechanism in the receiving structure, the position of the component pins can be detected in real time. When the pin direction is detected to be opposite, the control system automatically starts the first motor to drive the inner circular plate to rotate and straighten the component to the correct angle, thus realizing automatic correction of the pin direction, avoiding manual rework and improving product yield. 3. When the detection component determines that the component has no pins, the second motor drives the outer ring plate to tilt the entire receiving circular plate, accurately tilting the component into the collection box. This process does not require stopping the machine, realizing the automatic separation and recycling of defective products, ensuring the continuous operation of the production line and reducing manual intervention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the conveyor structure in this invention; Figure 3 This is a schematic diagram of the structure of the correction rod in this invention; Figure 4 This is a schematic diagram of the spring structure in this invention. Figure 5 This is a schematic diagram of the base structure in this invention; Figure 6 This is a schematic diagram of the conveyor from another angle in this invention; Figure 7 This is a schematic diagram of the supporting structure in this invention; Figure 8 This is a schematic diagram of the structure of the small gear and the large gear in this invention.

[0016] The meanings of the labels in the diagram are as follows: 1. Conveyor; 11. Conveyor Belt; 12. Rubber Ring Partition; 13. Placement Plate; 2. Base; 3. Hopper; 4. Correction Structure; 41. Mounting Frame; 42. Connecting Frame; 43. Correction Rod; 44. Spring; 5. Support Structure; 51. Base Plate; 52. Inclined Plate; 531. Inner Circular Plate; 532. Outer Ring Plate; 54. Square Block; 551. First Motor; 552. Rotating Shaft; 553. Pinion; 554. Large Gear 555. Wheel; 561. Rotating rod; 562. Rotating rod; 57. Connecting frame; 61. Mounting plate; 62. Third motor; 63. Ball screw; 64. Ball screw sleeve; 65. Mounting head; 66. Cylinder No. 1; 67. Connecting block; 71. Gantry frame; 72. Cylinder No. 2; 73. Mounting strip; 74. Detector; 81. Fixing frame; 82. Cylinder No. 3; 83. Negative pressure suction head; 9. Collection frame. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-8 As shown, this embodiment provides a chip mounting feeding device for a chip mounter, including a conveyor 1 and a base 2. Multiple rubber ring partitions 12 are evenly spaced on the conveyor belt 11 of the conveyor 1, dividing the conveyor belt 11 into conveyor channels for transporting components. The conveyor 1 is equipped with a correction structure 4, which corrects the components so that they are placed in the middle of the conveyor. The correction structure 4 includes a mounting frame 41 fixedly installed on the conveyor 1. A connecting frame 42 is fixedly connected to the mounting frame 41. Multiple correction rods 43 are symmetrically rotated on the connecting frame 42. The two corresponding correction rods 43 are in a figure-eight structure. A spring 44 is fixedly connected to both the correction rods 43 and the inner wall of the connecting frame 42. A movable component is provided on the base 2, and a receiving structure 5 is connected to the movable component. A placement plate 13 is fixedly connected to one end of the conveyor 1 near the base 2. When the movable component moves the receiving structure 5 onto the placement plate 13, the components fall from the conveyor 1 onto the receiving structure 5. The base 2 is equipped with a detection component, which detects the components that fall on the receiving structure 5 and detects the pin positions on the components. The receiving structure 5 includes multiple base plate seats 51, with inclined plates 52 connected to each base plate seat 51. One end of the inclined plate 52 facing away from the base plate seat 51 abuts against the conveyor belt 11. A receiving circular plate is mounted on the base plate seat 51, and a square block 54 is provided on the lower end face of the receiving circular plate. The receiving circular plate includes an inner circular plate 531 and an outer ring plate 532. The inner circular plate 531 is rotatably mounted in the outer ring plate 532. The multiple base plate seats 51 are fixed as a whole by a connecting frame 57. An installation cavity is provided in the square block 54, and a first motor 551 is fixedly mounted in the installation cavity. The output end of the first motor 551 is fixedly connected to a rotating shaft 552. A small gear 553 is fixedly installed on the rotating shaft 552. The small gear 553 meshes with a large gear 554. A rotating rod 555 is fixedly installed at the center of the large gear 554. The lower end of the rotating rod 555 is rotatably connected to the inner wall of the mounting cavity. The upper end of the rotating rod 555 passes through the upper end face of the square block 54 and is fixed to the lower end face of the inner circular plate 531. A connecting cavity is opened on the base plate 51. A second motor 561 is fixedly installed in the connecting cavity. A rotating rod 562 is fixedly connected to the output end of the second motor 561. The end of the rotating rod 562 facing away from the second motor 561 is fixedly connected to the outer ring plate 532. The detection assembly includes a gantry 71 fixedly connected to the base 2. A second cylinder 72 is fixedly installed on the gantry 71. A mounting plate 73 is fixedly connected to the telescopic end of the second cylinder 72. Multiple detectors 74 are installed on the mounting plate 73. The detectors 74 detect the pin positions of the components. A collection frame 9 is fixedly connected to the upper surface of the base 2. The collection frame 9 is located directly below the gantry 71.

[0019] In summary, the improvement of this embodiment lies in: A correction structure 4 is installed on the conveyor 1. Through the cooperation of the correction rods 43 and springs 44 arranged symmetrically in a figure-eight shape, the components are adaptively pushed to the middle of the conveyor during the conveying process. Without the need for external sensors or power sources, stepless automatic centering can be achieved, which effectively avoids the picking deviation caused by component offset and significantly improves the accuracy of subsequent acceptance and mounting. By setting the detection component to cooperate with the rotation drive mechanism of the inner circular plate 531 in the receiving structure 5, the position of the component pin can be detected in real time. When the pin direction is detected to be opposite, the control system automatically starts the first motor to drive the inner circular plate 531 to rotate and straighten the component to the correct angle, thus realizing automatic correction of the pin direction, avoiding manual rework and improving product yield. When the detection component determines that the component has no pin, the second motor 561 drives the outer ring plate 532 to tilt the entire receiving circular plate, accurately pouring the component into the collection frame 9. This process does not require stopping the machine, realizing the automatic separation and recycling of defective products, ensuring the continuous operation of the production line and reducing manual intervention.

[0020] Based on the above, other structures also need to be disclosed in detail, such as: The moving assembly includes two mounting plates 61 symmetrically fixed on the base 2 and a third motor 62 fixedly mounted on the mounting plates 61. A ball screw 63 is fixedly connected to the output end of the third motor 62. A ball screw sleeve 64 is threaded onto the ball screw 63. An installation head 65 is fixedly connected to the ball screw sleeve 64. A first cylinder 66 is fixedly mounted on the installation head 65. A connecting block 67 is fixedly connected to the telescopic end of the first cylinder 66. The connecting block 67 is fixedly connected to the base plate 51. The third motor 62 drives the ball screw 63 to rotate, thereby causing the ball screw sleeve 64 and the installation head 65 on it to move horizontally.

[0021] A fixed frame 81 is fixedly connected to the base 2. Multiple cylinders 82 are installed on the fixed frame 81. A negative pressure suction head 83 is fixedly connected to the telescopic end of the cylinder 82. The components are adsorbed by the negative pressure suction head 83. The cylinder 82 drives the negative pressure suction head 83 to descend, and the negative pressure suction head 83 adsorbs the components.

[0022] A hopper 3 is provided at one end of the conveyor 1 away from the placement plate 13, and the components fall from the hopper 3 onto the conveyor belt 11.

[0023] In summary, the working principle of this solution is as follows: After the equipment is started, the components fall from the hopper 3 onto the conveyor belt 11 of the conveyor 1, and are separated into individual conveying channels by the rubber ring partition 12, so as to realize the sequential conveying of individual components. When the component moves with the conveyor belt 11 to the position of the correction structure 4, the component enters between the two correction rods 43 arranged in a figure-eight shape. Since there is a spring 44 between the correction rod 43 and the connecting frame 42, the correction rod 43 can adaptively open or close according to the actual width of the component, thereby gradually pushing the component to the center of the conveyor, ensuring the consistency of the component position during subsequent acceptance. After correction, the components continue to move forward until they reach the placement plate 13 at the end of the conveyor 1. At this time, the third motor 62 in the moving assembly drives the ball screw 63 to rotate, which drives the ball screw sleeve 64 and its mounting head 65 to move horizontally. At the same time, the first cylinder 66 drives the connecting block 67 to move the base plate 51 downward and onto the placement plate 13. The upper end of the inclined plate 52 abuts against the conveyor belt 11. The components slide naturally from the end of the conveyor belt 11 and are guided by the inclined plate 52 to fall onto the receiving circular plate. The inner circular plate 531 and the outer ring plate 532 of the receiving circular plate remain horizontal in the initial state. The moving component transports the receiving structure 5 carrying the components to the bottom of the gantry 71. The second cylinder 72 extends, bringing the detector 74 on the mounting plate 73 close to the components to detect the pin positions of the components. If the component pin position is detected to be opposite to the standard direction: the first motor 551 drives the large gear 554 and the rotating rod 555 to rotate through the small gear 553, thereby driving the inner circular plate 531 to rotate relative to the outer ring plate 532, and aligning the component to the correct angle. If no pin is detected: start the second motor 561, drive the outer ring plate 532 through the rotating rod 562 to tilt the entire receiving circular plate, and tilt the components into the collection box 9 below to realize the automatic rejection of defective products; If the pin position is detected as correct, the device proceeds to the next adsorption-transfer process. For components that pass inspection, the moving assembly transports them to the area below the fixed frame 81. The third cylinder 82 drives the negative pressure suction head 83 to descend, and the negative pressure suction head 83 adsorbs the components. Then the third cylinder 82 retracts, transferring the components to the placement head of the placement machine or directly to the placement station, thus completing the feeding process. After a component is fed, the moving component drives the receiving structure 5 back to the placement plate 13, waiting for the next component to fall. The equipment repeats the above steps to achieve continuous automated feeding.

[0024] It is worth noting that the entire device is controlled by a controller. Since the controller is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chip mounting feeding device for a chip mounter, comprising a conveyor (1) and a base (2), wherein a plurality of rubber ring partitions (12) are installed at equal intervals on the conveyor belt (11) of the conveyor (1), the plurality of rubber ring partitions (12) dividing the conveyor belt (11) into conveyor channels for conveying components, characterized in that: The conveyor (1) is equipped with a correction structure (4), which corrects the components so that the components are placed in the middle of the conveyor channel. A movable component is provided on the base (2), and a receiving structure (5) is connected to the movable component. A placement plate (13) is fixedly connected to one end of the conveyor (1) near the base (2). When the movable component moves the receiving structure (5) onto the placement plate (13), the components fall from the conveyor (1) onto the receiving structure (5). The base (2) is provided with a detection component, which detects the components that fall on the receiving structure (5) and detects the pin positions on the components.

2. The chip feeding device for a chip mounter according to claim 1, characterized in that: The correction structure (4) includes a mounting frame (41) fixedly installed on the conveyor (1). A connecting frame (42) is fixedly connected to the mounting frame (41). Multiple correction rods (43) are symmetrically rotated on the connecting frame (42). The corresponding two correction rods (43) are in a figure-eight structure. Springs (44) are fixedly connected to the inner walls of the correction rods (43) and the connecting frame (42).

3. The chip feeding device for a chip mounter according to claim 1, characterized in that: The receiving structure (5) includes multiple base plate seats (51), and an inclined plate (52) is connected to the base plate seat (51). The end of the inclined plate (52) away from the base plate seat (51) abuts against the conveyor belt (11). A receiving circular plate is installed on the base plate seat (51). A square block (54) is provided on the lower end face of the receiving circular plate. The receiving circular plate includes an inner circular plate (531) and an outer ring plate (532). The inner circular plate (531) is rotatably installed in the outer ring plate (532). Multiple base plate seats (51) are fixed as a whole by a connecting frame (57).

4. The chip feeding device for a chip mounter according to claim 3, characterized in that: An installation cavity is provided in the square block (54), in which a first motor (551) is fixedly installed. The output end of the first motor (551) is fixedly connected to a rotating shaft (552). A small gear (553) is fixedly installed on the rotating shaft (552). The small gear (553) meshes with a large gear (554). A rotating rod (555) is fixedly installed at the center of the large gear (554). The lower end of the rotating rod (555) is rotatably connected to the inner wall of the installation cavity. The upper end of the rotating rod (555) passes through the upper end face of the square block (54) and is fixed to the lower end face of the inner circular plate (531).

5. The chip feeding device for a chip mounter according to claim 3, characterized in that: A connecting cavity is provided on the base plate (51), and a second motor (561) is fixedly installed in the connecting cavity. A rotating rod (562) is fixedly connected to the output end of the second motor (561), and the end of the rotating rod (562) away from the second motor (561) is fixedly connected to the outer ring plate (532).

6. The chip feeding device for a chip mounter according to claim 3, characterized in that: The moving component includes two mounting plates (61) symmetrically fixedly mounted on the base (2) and a third motor (62) fixedly mounted on the mounting plates (61). The output end of the third motor (62) is fixedly connected to a ball screw (63). A ball screw sleeve (64) is threaded onto the ball screw (63). An installation head (65) is fixedly connected onto the ball screw sleeve (64). A first cylinder (66) is fixedly mounted on the installation head (65). A connecting block (67) is fixedly connected to the telescopic end of the first cylinder (66). The connecting block (67) is fixedly connected to the base plate (51).

7. The chip feeding device for a chip mounter according to claim 3, characterized in that: The detection assembly includes a gantry (71) fixedly connected to the base (2), a second cylinder (72) fixedly installed on the gantry (71), an installation strip (73) fixedly connected to the telescopic end of the second cylinder (72), and multiple detectors (74) installed on the installation strip (73). The detectors (74) detect the pin positions of the components. A collection frame (9) is fixedly connected to the upper surface of the base (2), and the collection frame (9) is located directly below the gantry (71).

8. The chip feeding device for a chip mounter according to claim 3, characterized in that: A fixed frame (81) is fixedly connected to the base (2), and multiple No. 3 cylinders (82) are installed on the fixed frame (81). A negative pressure suction head (83) is fixedly connected to the telescopic end of the No. 3 cylinder (82), and the components are adsorbed by the negative pressure suction head (83).

9. The chip feeding device for a chip mounter according to claim 1, characterized in that: The conveyor (1) has a hopper (3) at one end away from the placement plate (13), and the components fall from the hopper (3) onto the conveyor belt (11).

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