TWI853486B - Appearance inspection apparatus and processing machine - Google Patents

Abstract

The appearance inspection apparatus includes a receiving mechanism, an imaging mechanism, and a transportation mechanism. The receiving mechanism has a supporting fork movable along a Z-direction in order to receive the tray having the electronic component. The transportation mechanism has a transportation driving unit to drive a transportation fork to move linearly to pick up the tray having the electronic component from the supporting fork. The transportation fork is also driven to move circularly to bring the tray to the position below the imaging member of the imaging mechanism so that the top face of the electronic component is under the appearance inspection process by the imaging member.

Description

Appearance detection device and operating machine

The present invention provides an external inspection device which can improve the quality and production efficiency of electronic components.

Nowadays, electronic components go through multiple processing steps, such as solder ball implantation to implant multiple solder ball contacts on the bottom surface of electronic components; testing process to perform electrical testing on electronic components; printing process to print model numbers, manufacturer information, etc. on the top surface of electronic components; therefore, electronic components need to undergo testing operations, solder ball inspection operations, and appearance inspection operations before leaving the factory to eliminate defective products.

The electronic component processing machine uses a material transfer device to absorb the top surface of the electronic component, so that the solder ball of the electronic component faces downward, and moves the electronic component into the test socket so that the solder ball of the electronic component electrically contacts the probe of the test socket to perform the test operation. After the test is completed, the material transfer device transfers the electronic component to the top of an image finder. Since the solder ball of the electronic component faces downward, when the electronic component passes through the image finder, the image finder can directly perform a solder ball detection operation on the solder ball on the bottom surface of the electronic component from bottom to top to detect whether the solder ball has fallen off.

However, the material transfer device is adsorbed on the top surface of the electronic component, that is, the material transfer device and the driving mechanism above it shield the information on the top surface of the electronic component, resulting in an inability to detect whether the printed information on the top surface of the electronic component is correct or damaged, and thus the factory quality of the electronic component cannot be ensured.

If the electronic component is rotated and turned over, and the bottom surface of the electronic component is sucked by the material transfer device, although the imager can take the image of the top surface of the electronic component to perform the appearance inspection operation, the solder ball of the electronic component must be placed facing downward during the unloading operation. As a result, after the electronic component is imaged, the electronic component with the solder ball facing upward must be tediously rotated and turned over again so that the solder ball of the electronic component faces downward, and then the top surface of the electronic component can be sucked by the material transfer device before unloading, resulting in increased operation time and inconvenience in unloading.

The first object of the present invention is to provide an appearance detection device, comprising a material receiving mechanism, an imaging mechanism and a transfer mechanism, wherein the material receiving mechanism is provided with a receiving unit and at least one material receiving fork, the receiving unit is used to assemble the material receiving fork, the material receiving fork can horizontally support at least one electronic component with the top surface facing upward, the imaging mechanism is provided with a mounting unit and at least one imager, the mounting unit is used to assemble the imager, the imager can image the top surface of the electronic component, and the transfer mechanism is provided with a transfer drive unit. and at least one transfer fork, the transfer drive unit drives the transfer fork to perform linear displacement and rotational displacement, so that the transfer fork takes out the electronic component to be inspected from the receiving fork and transfers it to the bottom of the imager of the imaging mechanism, so that the imager can perform appearance inspection on the top surface of the electronic component. After the imaging is completed, the transfer fork transfers the inspected electronic component with the top surface facing upward to the receiving fork for convenient and rapid material removal, thereby improving the factory quality and production efficiency of the electronic components.

The second object of the present invention is to provide an appearance detection device, wherein the material receiving mechanism is equipped with at least one tray on the material receiving fork, and the tray is used to receive electronic components. The transfer fork can take out and transfer a tray with electronic components, thereby improving the stability of the transfer process of electronic components.

The third object of the present invention is to provide an appearance detection device, wherein the material receiving mechanism is provided with a material receiving driver for driving the material receiving fork to move in the Z direction. When the transfer fork moves to the top or bottom of the material receiving fork, the material receiving fork moves in the Z direction to facilitate placing the electronic components to be detected on the transfer fork, or taking out the detected electronic components from the transfer fork, thereby improving the convenience of operation.

The fourth object of the present invention is to provide an appearance inspection device, wherein the mounting unit of the imaging mechanism is provided with an imaging driver for driving the imaging device to move in the Z direction to adjust the imaging height position, thereby improving the quality of the appearance inspection operation.

The fifth object of the present invention is to provide a kind of operating machine, including a machine, a feeding device, a receiving device, a testing device, a conveying device, the appearance inspection device of the present invention and a central control device, wherein the feeding device is arranged on the machine and is provided with at least one feeder for accommodating at least one electronic component to be tested; the receiving device is arranged on the machine and is provided with at least one receiving device for accommodating at least one electronic component that has been tested; the testing device is arranged on the machine and is provided with at least one tester for testing electronic components; the conveying device is arranged on the machine , and is provided with at least one conveyor for conveying electronic components; the appearance inspection device of the present invention is arranged on the machine , and is provided with a receiving mechanism, an imaging mechanism and a transfer mechanism for performing appearance inspection operations on electronic components ; the central control device controls and integrates the actions of each device to perform automated operations.

In order to enable you to have a further understanding of the present invention, a preferred embodiment is given below with accompanying drawings:

Please refer to FIGS. 1 to 4 , the appearance detection device 10 of the present invention includes a material receiving mechanism, an imaging mechanism and a transfer mechanism.

The material receiving mechanism comprises a receiving unit and at least one material receiving fork. The receiving unit is used to assemble the material receiving fork, and the material receiving fork can receive at least one electronic component.

According to the operation requirements, one of the material receiving fork of the material receiving mechanism and the transfer fork of the transfer mechanism is displaced in a third direction (such as Z direction) relative to the other.

According to the working requirements, the supporting unit can be fixed with a material receiving fork or drive the material receiving fork to move in at least a third direction (such as the Z direction); for example, the supporting unit is provided with a fixed seat for fixing at least one horizontally arranged material receiving fork; for example, the supporting unit is provided with at least one material receiving driver for driving at least one horizontally arranged material receiving fork to move in the third direction; further, the material receiving driver can be a cylinder, a linear motor, or a motor and at least one transmission structure.

According to the operation requirements, at least one material receiving fork of the material receiving mechanism can receive at least one detachable receiving plate, and the receiving plate is used to receive at least one electronic component.

In this embodiment, the material receiving mechanism is provided with a plurality of material receiving drivers and a plurality of material receiving forks , a plurality of material receiving forks are used to receive a plurality of electronic components, and a plurality of material receiving drivers are used to drive the plurality of material receiving forks to move in a third direction; the design of the plurality of material receiving drivers is the same, and one material receiving driver is used for illustration, the material receiving driver is provided with a first motor 11, a first transmission structure and a second transmission structure, the first transmission structure is provided with a first screw seat assembly arranged in a first direction (such as the X direction), the first screw 121 of the first screw seat assembly is driven by the first motor 11, and drives the first screw seat 122 to move along the X direction, the first screw seat 122 is connected to drive a moving seat 131 to move synchronously, the moving seat 131 is connected to a first slide 132 of a slide rail assembly arranged in the X direction, the first slide 132 moves along the first The slide rail 133 is displaced in the X direction. The second transmission structure is provided with a connecting rod group. The middle sections of the first connecting rod 141 and the second connecting rod 142 of the connecting rod group are pivoted to each other. One end of the first connecting rod 141 is pivoted to the moving seat 131, and the other end is pivoted to the first assembly part 151 of the material receiving fork 15 arranged in the Z direction. One end of the second connecting rod 142 is pivoted to a fixed seat 143, and the other end is provided with a pulley 144. The pulley 144 can be displaced along the slide groove 152 opened in the X direction of the first assembly part 151 of the material receiving fork 15. The first assembly part 151 of the material receiving fork 15 is connected to two horizontally arranged first supporting rods 153 for supporting electronic components. A first yielding part 154 is formed between the two first supporting rods 153.

In addition, a detachable plate 16 is assembled on the top surface of the first supporting rod 153 of the material receiving fork 15, and the plate 16 is provided with a receiving portion 161 for supporting electronic components; the material receiving mechanism is provided with a first positioning structure, and the first positioning structure is provided with a first positioning member and a second positioning member that cooperate with each other between the material receiving fork 15 and the plate 16 to position the plate 16; in this embodiment, the first positioning structure is provided with a first positioning member 155 as a positioning pin on the first supporting rod 153 of the material receiving fork 15, and a second positioning member 162 as a positioning hole is provided on the bottom surface of the plate 16, and the second positioning member 162 of the plate 16 can be fitted into or detached from the first positioning member 155 of the material receiving fork 15.

The imaging mechanism includes a mounting unit and at least one imaging device. The mounting unit is used to assemble the imaging device, and the imaging device can capture the top surface of the electronic component. According to the operation requirements, the mounting unit is provided with at least one imaging driver to drive the imaging device to move in at least a third direction to adjust the imaging height position.

In this embodiment, the mounting unit is provided with a support frame 17 for assembling an imaging driver 18. The imaging driver 18 may be a cylinder, a linear motor, or a motor and at least one transmission group. The imaging driver 18 is connected and can drive the imager 19 to move in the Z direction to adjust the imaging height position. The imager 19 is a CCD for imaging electronic components from top to bottom, and transmitting the imaging data to a processor (not shown) for analyzing and determining whether the top surface appearance of the electronic component is damaged or whether the printed information is correct.

The transfer mechanism includes a transfer drive unit and at least one transfer fork. The transfer fork can carry electronic components. The transfer drive unit is used to drive the transfer fork to transfer electronic components between the material receiving fork 15 and the imager 19, and the imager 19 performs an appearance inspection operation on the top surface of the electronic component on the transfer fork. Furthermore, the transfer fork can carry and transfer at least one tray 16 for electronic components.

According to the operation requirements, the transfer mechanism is provided with a second positioning structure. The second positioning structure is provided with a second positioning member and a third positioning member that cooperate with each other between the transfer fork and the tray 16 to position the tray 16.

According to the operation requirements, the transfer drive unit is provided with a plurality of drivers for driving the transfer fork to perform linear displacement in a plurality of directions, or to perform linear displacement in at least one direction and horizontal rotation displacement; for example, a plurality of drivers are provided for driving the transfer fork to perform linear displacement in the X-Y direction; for example, a plurality of drivers are provided for driving the transfer fork to perform linear displacement in the X-Y direction and horizontal rotation displacement.

In this embodiment, the plurality of drivers of the transfer drive unit include a first driver 20, a second driver 21 and a third driver 22. The first driver 20 is arranged in a first direction (such as the X direction) and is provided with a motor to drive a screw seat assembly arranged in the X direction. The screw seat of the screw seat assembly is provided for assembling the second driver 21 to drive the second driver 21 to move in the X direction. The second driver 21 is arranged in a second direction (such as the Y direction) and is provided with a motor to drive a screw seat assembly arranged in the Y direction. The screw seat assembly is provided, and the screw seat of the screw seat assembly is provided to assemble the third driver 22 to drive the third driver 22 to move in the Y direction; the third driver 22 is provided with a motor-driven gear set, and the gear set is provided to connect and drive a transfer fork 23 to make horizontal rotational displacement. The transfer fork 23 is connected to the third driver 22 by a second mounting portion 231, and is provided with a plurality of second bearing rods 232 arranged horizontally to support a tray 16 of an electronic component, and the plurality of second bearing rods 2 The second yielding portion 233 is formed between the plurality of second supporting rods 232 of the transfer fork 23 and the plurality of first supporting rods 153 of the material receiving fork 15 are mutually misaligned, so that the first supporting rod 153 of the material receiving fork 15 is opposite to the second yielding portion 233 of the transfer fork 23, and the first yielding portion 154 of the material receiving fork 15 is opposite to the second supporting rod 232 of the transfer fork 23; the second positioning structure is provided with a plurality of first positioning pins on the top surface of the plurality of second supporting rods 232. The three positioning members 234 are used to allow the second positioning member 162 of the tray 16 to fit into or disengage from the third positioning member 234 of the transfer fork 23; therefore, the transfer mechanism drives the transfer fork 23 to perform linear displacement in the X-Y direction and horizontal rotation displacement by the first driver 20, the second driver 21 and the third driver 22, so that the transfer fork 23 can transfer the electronic components between the material receiving fork 15 and the imager 19, and the imager 19 can perform appearance inspection operations on the top surface of the electronic components.

Please refer to Figures 5 to 9. The electronic component processing machine of the present invention includes a machine 30, a feeding device 40 , a receiving device 50, a testing device 60, a conveying device 70, an appearance detection device 10 of the present invention, and a central control device (not shown); the central control device controls and integrates the actions of each device to perform automated operations The feeding device 40 is mounted on the machine 30 and is provided with at least one feeder 41 for accommodating at least one electronic component to be tested; the receiving device 50 is mounted on the machine 30 and is provided with at least one receiver 51 for accommodating at least one electronic component that has been tested; the testing device 60 is arranged on the machine 30 and is provided with at least one tester for testing the electronic components; in this embodiment, the tester is provided with an electrically connected circuit board 61 and a test seat 62 with a transmission member (such as a probe), and the test seat 62 is used to hold and test the electronic components; the conveying device 70 is mounted on the machine 30 and is provided with at least one conveyor for conveying the electronic components. In this embodiment, the conveying device 70 is provided with a first conveyor 71 to take out the electronic component to be tested from the feeder 41 of the feeding device 40. The conveyor 70 uses the third conveyor 73 to transfer the electronic components to be tested in the second conveyor 72 to the test seat 62 to perform the test operation, and transfers the tested electronic components to the fourth conveyor 74. The fourth conveyor 74 takes out the tested electronic components. The conveyor 70 uses the fifth conveyor 75 to take out the tested electronic components from the fourth conveyor 74 and transfer them to the external inspection device 10 of the present invention to perform the external inspection operation on the top surface of the electronic components. The fifth conveyor 75 transports the tested electronic components to the receiver 51 of the receiving device 50 according to the results of the test and external inspection for classification and storage.

According to the operation requirements, the third conveyor 73 of the conveying device 70 further includes a temperature control unit (not shown), and the temperature control unit is provided with at least one temperature control unit on the third conveyor 73 for temperature controlling electronic components; further, the temperature control unit can be a heating element, a cooling chip or a seat with a fluid.

However, when the testing device 60 performs the testing operation of the next batch of electronic components, the fifth conveyor 75 moves the tested electronic components 81 into a tray 16 of the receiving mechanism of the appearance detection device 10. The receiving mechanism drives the first screw 121 with the first motor 11, and the first screw 121 drives the first screw seat 122 to move along the X direction. , the first screw seat 122 drives the moving seat 131 to move synchronously, and the moving seat 131 pushes one end of the first connecting rod 141 toward one end of the second connecting rod 142. Since the first connecting rod 141 and the second connecting rod 142 are pivotally connected to each other, the pulley 144 at the other end of the second connecting rod 142 can move along the slide groove 152 of the material receiving fork 15 and move toward the other end of the first connecting rod 141, so that the first connecting rod 141 and the second connecting rod 142 support the material receiving fork 15 and the plate 16 with the electronic component 81 to move upward in the Z direction.

The height position of the material receiving fork 15 is higher than the height position of the transfer fork 23. The transfer mechanism drives the transfer fork 23 to perform linear displacement in the X-Y direction with the first driver 20 and the second driver 21, so that the transfer fork 23 is located below the material receiving fork 15. Since the first clearance portion 154 is formed between the two first bearing rods 153 of the material receiving fork 15, and the second clearance portion 233 is formed between the plurality of second bearing rods 232 of the transfer fork 23, the first motor 1 1The first screw rod 121 and the first screw seat 122 drive the moving seat 131 to move in the reverse direction in the X direction. The moving seat 131 drives the material receiving fork 15, the plate 16 and the electronic component 81 to move downward in the Z direction through the first connecting rod 141 and the second connecting rod 142, so that the first supporting rod 153 of the material receiving fork 15 passes through the second yielding portion 233 of the transfer fork 23, and the plate 16 of an electronic component 81 is placed on the second supporting rod 232 of the transfer fork 23, so that the transfer fork 23 carries the plate 16 of an electronic component 81.

The transfer mechanism drives the transfer fork 23 to move in the reverse direction in the X-Y direction by the first driver 20 and the second driver 21, so that the transfer fork 23 carries a tray 16 of an electronic component 81 and exits from the bottom of the receiving fork 15. The transfer mechanism then drives the transfer fork 23 to carry the tray 16 to make a horizontal rotation displacement by the third driver 22, and carries the tray 16 of an electronic component 81 to the bottom of the imager 19 of the imaging mechanism. The top surface of the electronic component 81 faces upward and is not blocked. When the imaging driver 18 of the imaging mechanism has adjusted the imaging height position of the imager 19 in advance, the imager 19 can directly image the top surface of the electronic component 81 to perform an appearance inspection operation, and transmit the imaging information to a processor (not shown). The processor analyzes and determines whether the top surface of the electronic component 81 is damaged and whether the printed information is correct, thereby improving the factory quality of the electronic component.

After completing the appearance inspection of the top surface of the electronic component 81, the transfer mechanism drives the transfer fork 23 with the first driver 20, the second driver 21 and the third driver 22 to carry a tray 16 of the electronic component 81 for X-Y direction displacement and horizontal rotation displacement, and places the tray 16 of the electronic component 81 on the receiving fork 15 of the receiving mechanism. Since the solder ball of the electronic component 81 faces downward, the fifth conveyor 75 directly transfers the electronic component 81 in the tray 16 to the receiving device 50 for receiving, thereby shortening the unloading operation time to improve production efficiency.

However, when the transfer mechanism carries a tray 16 with an electronic component 81 to perform an appearance inspection operation, another tray 16A of the receiving mechanism has already received the next electronic component 82 to be inspected, so that the transfer fork 23 can quickly continue to receive the tray 16A with the next electronic component 82 on the other receiving fork 15A, thereby improving production efficiency.

10: Appearance detection device

11: First Motor

121: First screw

122: First screw seat

131: Mobile seat

132: First slide

133: First track

141: First Link

142: Second Link

143: Fixed seat

144:Pulley

15, 15A: Material receiving fork

151: First assembly section

152: Chute

153: First bearing rod

154: First yielding position

155: first positioning member

16, 16A: receiving plate

161: Accommodation

162: Second positioning member

17: Support frame

18: Image acquisition drive

19: Imager

20: First drive

21: Second drive

22: Third drive

23: Transfer fork

231: Second assembly section

232: Second support rod

233: Second yielding part

234: Third positioning member

30: Machine

40: Feeding device

41: Feeder

50: Material receiving device

51: Receiver

60:Testing equipment

61: Circuit board

62: Test seat

70: Transport device

71: First conveyor

72: Second conveyor

73: The third conveyor

74: The fourth conveyor

75: The fifth conveyor

81, 82: Electronic components

Figure 1: A top view of the appearance detection device of the present invention. Figure 2: A rear view of the appearance detection device of the present invention. Figure 3: A schematic diagram of the housing unit of Figure 2. Figure 4: A side view of the appearance detection device of the present invention. Figure 5: A schematic diagram of the appearance detection device of the present invention applied to a working machine. Figures 6 to 9: Schematic diagrams of the use of the appearance detection device of the present invention.

10: Appearance detection device

11: First Motor

15: Material receiving fork

153: First bearing rod

154: First yielding position

155: First positioning member

16: Acceptance

161: Accommodation section

162: Second positioning member

17: Support frame

18: Image acquisition drive

19: Imager

20: First drive

21: Second drive

22: Third drive

23: Transfer fork

231: Second assembly section

232: Second support rod

233: Second yielding section

234: The third positioning piece

Claims (6)

An appearance detection device includes: a material receiving mechanism: a receiving unit and a plurality of material receiving forks are provided, the receiving unit is provided with a plurality of material receiving drivers for assembly and can drive the plurality of material receiving forks to move in a third direction respectively, the plurality of material receiving forks can carry a plurality of detachable trays with electronic components; an imaging mechanism: a mounting unit and at least one imager are provided, the mounting unit is provided with the imager, the imager can capture the top surface of the electronic component; a transfer mechanism: a transfer drive unit and at least one transfer fork are provided The transfer drive unit is used for the transfer fork to move in a third direction with a plurality of the material receiving forks to take out or place the tray with the electronic components. The transfer drive unit is used for driving the transfer fork to transfer the electronic components between the material receiving fork and the imager, and for the imager to perform appearance inspection on the top surface of the electronic components. The transfer mechanism is provided with a second positioning structure. The second positioning structure is provided with a second positioning member and a third positioning member that cooperate with each other between the transfer fork and the tray to position the tray. As described in claim 1, the external inspection device, one of the material receiving fork and the transfer fork is displaced in a third direction relative to the other. As described in claim 1, the material receiving mechanism is provided with a first positioning structure, and the first positioning structure is provided with a first positioning member and a second positioning member that cooperate with each other between the material receiving fork and the receiving plate to position the receiving plate. As described in claim 1, the mounting unit of the imaging mechanism of the external observation detection device is provided with at least one imaging driver for driving the imaging device to move in at least a third direction to adjust the imaging height position. As described in claim 1, the transfer drive unit is provided with a plurality of drivers for driving the transfer fork to perform linear displacement in a plurality of directions, or to perform linear displacement in at least one direction and horizontal rotational displacement. A work machine, comprising: a machine; a feeding device: arranged on the machine and provided with at least one feeder for accommodating at least one electronic component to be tested; a receiving device: arranged on the machine and provided with at least one receiving device for accommodating at least one tested electronic component; a testing device: arranged on the machine and provided with at least one tester for testing electronic components; a conveying device: arranged on the machine and provided with at least one conveyor for conveying electronic components; at least one appearance detection device as described in claim 1: arranged on the machine for detecting the appearance of electronic components; a central control device: for controlling and integrating the actions of various devices to perform automated operations.

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