CN217586975U - Automatic chip detection device - Google Patents

Abstract

The utility model relates to an automatic chip detection device, which is used for detecting a chip and a welding wire fixed on a frame and comprises a pushing and feeding mechanism, a bearing part and a detection part; the pushing and feeding mechanism is configured to clamp and convey the frame to be detected stored in the material box to the bearing part, and push the qualified frame back to the material box after detection; the bearing part is configured to bear and fix a frame to be detected; the detection part is configured to detect the chip and the bonding wire on the frame carried on the carrying part. The frame to be detected and qualified after detection is conveyed through the material pushing mechanism, so that the feeding and discharging efficiency is improved; the chip and the bonding wire on the frame borne on the bearing part are comprehensively detected through the detection part, and the detection efficiency is improved.

Description

Automatic chip detection device

Technical Field

The utility model belongs to the technical field of the semiconductor chip packaging technology and specifically relates to a chip automatic checkout device.

Background

In the field of semiconductor chip packaging technology, a chip is attached to a frame, and the process is called die bonding or die mounting; the bonding process is called wire bonding, in which the nodes on the chip are connected to the nodes on the frame by bonding wires. And detecting the bonded frame and chip to check whether defects exist. Commonly used test items include: chip mounting abnormality (pasting askew, damage, missing pasting, wrong pasting and the like), and bonding wire welding abnormality (welding askew, multiple lines, few lines, wrong lines, broken lines and the like).

The traditional detection method is to manually feed and discharge, and single-side appearance detection is carried out on the chip, and appearance detection is mainly carried out on one outer surface of the chip. The detection method has certain limitation, can not detect the welding quality between the welding wire and the chip, and has lower detection efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses detect not comprehensive, the lower problem of detection efficiency to current chip detection method, provide a detect comprehensive and chip automatic checkout device that detection efficiency is high.

The technical scheme of the utility model as follows: an automatic chip detection device is used for detecting a chip and a bonding wire fixed on a frame and comprises a pushing and feeding mechanism, a bearing part and a detection part; wherein:

the pushing and feeding mechanism is configured to clamp and convey the frame to be detected stored in the material box to the bearing part, and push the qualified frame back to the material box after detection;

the bearing part is configured to bear and fix a frame to be detected;

the detection part is configured to detect the chip and the bonding wire on the frame carried on the carrying part.

The frame to be detected and qualified after detection is conveyed through the material pushing mechanism, so that the feeding and discharging efficiency is improved; the chip and the bonding wire on the frame borne on the bearing part are comprehensively detected through the detection part, and the detection efficiency is improved.

Optionally, the material pushing mechanism comprises a clamping assembly and a traversing assembly, and the clamping assembly is mounted on the traversing assembly; the clamping assembly is configured to clamp or push the frame, and the traverse assembly is configured to drive the frame to move between the magazine and the bearing part.

Through centre gripping subassembly centre gripping or ejection frame, drive the frame through the sideslip subassembly and remove between magazine and bearing part, can realize the automatic unloading of going up of frame, improve and go up unloading efficiency.

Optionally, the clamping assembly comprises a clamping jaw, a clamping jaw cylinder and a pressure sensing assembly, the clamping jaw is mounted on the clamping jaw cylinder, and the pressure sensing assembly is mounted on a mounting plate of the clamping jaw cylinder; the clamping jaw cylinder drives the clamping jaw to open and close, and the pressure sensing assembly is used for detecting whether the clamping jaw is blocked or not when the clamping jaw pushes the frame back to the material box;

the transverse moving assembly comprises a driving motor, a synchronous belt mechanism and a sliding rail assembly, the clamping jaw air cylinder is installed on the synchronous belt mechanism and is in sliding fit with the sliding rail assembly, and the driving motor drives the synchronous belt mechanism to rotate and drives the clamping assembly to move along the sliding rail assembly.

The clamping assembly adopts a clamping jaw and a clamping jaw cylinder, and the transverse moving assembly adopts a driving motor and a synchronous belt mechanism, so that the structure is simple, the cost is low, and the installation and the debugging are convenient.

Optionally, the bearing part comprises a detection platform, a first translation assembly, a second translation assembly and a pressing assembly;

the pressing assembly is arranged on the detection platform and is configured to press the frame to be detected on the detection platform;

the detection platform is arranged on the first translation assembly, and the first translation assembly is arranged on the second translation assembly;

the first translation assembly is configured to drive the detection platform to move along a first direction, the second translation assembly is used for driving the first translation assembly to move along a second direction perpendicular to the first direction by a first distance, and the first distance is a distance between two adjacent rows of chips on the frame to be detected on the detection platform.

The first translation assembly is matched with the second translation assembly, so that the position of the detection platform on the horizontal plane can be adjusted at will, and the detection part can clearly detect the frame to be detected; the frame to be detected can be firmly fixed on the detection platform through the pressing assembly.

Optionally, the number of the bearing parts is two, and the two bearing parts are driven by the respective second translation assemblies to move in the second direction by a second distance.

By arranging the two bearing parts, the material can be circularly loaded, and the detection efficiency is improved; two bearing parts move the second distance in the second direction under the drive of respective second translation subassembly, can avoid two testing platform to bump when first direction motion.

Optionally, the detecting part includes five cameras, four cameras are configured to detect respectively towards the bonding wires connected between the frame on the bearing part and the chip, and one camera detects towards the front surface of the chip in the frame on the bearing part.

The detection part adopts five cameras, can treat that the frame that detects carries out five comprehensive detections of direction, avoids lou examining.

Optionally, the detecting part further comprises at least one camera adjusting component for adjusting the camera, the camera adjusting component is configured to adjust the angle and/or position of the camera mounted on the camera adjusting component;

the camera adjusting assembly comprises a pitching adjusting motor, a forward and backward motor and a lifting motor, wherein the camera is installed on the pitching adjusting motor, the pitching adjusting motor is installed on the forward and backward motor, and the forward and backward motor is installed on the lifting motor; the lifting motor is used for adjusting the vertical position of the camera, the advancing and retreating motor is used for adjusting the horizontal position of the camera, and the pitching adjusting motor is used for adjusting the pitching angle of the camera.

The position of the camera can be adjusted through the camera adjusting component, so that the camera is accurate in focusing, clear in photographing and suitable in image size.

Optionally, the chip automatic detection device further comprises a loading and unloading part, the loading and unloading part comprises a loading part and an unloading part which are sequentially installed along the vertical direction from bottom to top, the loading part is configured to bear and convey a material box loaded with a frame to be detected, and the unloading part is configured to bear and convey a material box loaded with a frame qualified for detection;

the feeding part comprises a feeding plate, a pushing block and a pushing block cylinder, the pushing block cylinder is installed on the feeding plate, the pushing block is installed on the pushing block cylinder and located above the feeding plate, and the pushing block cylinder drives the pushing block to move so as to push the material boxes on the feeding plate to a material feeding position of the material boxes;

the discharging part comprises a motor and a belt, the motor drives the belt to rotate, and the material box loaded with the qualified frame is received from the material box discharging position.

The feeding and discharging part integrates the feeding part and the discharging part, so that the space in the vertical direction can be fully utilized, and the volume of the whole device is reduced; through the configuration of the feeding and discharging part, the feeding and discharging path can be shortened, and the feeding and discharging efficiency is improved.

Optionally, the feeding and discharging part further comprises a width adjusting mechanism, and the width adjusting mechanism is used for adjusting the distance between the two side plates of the feeding and discharging part so as to adapt to feeding and discharging of material boxes with different sizes.

The distance between the side plates is adjusted through the width adjusting mechanism, so that the feeding and discharging part can adapt to material boxes with different sizes, and the application range of the detection device is widened.

Optionally, the feeding and discharging part further comprises a pushing mechanism and at least one carrying mechanism, the carrying mechanism is configured to carry out the material box at the material feeding position of the material box from the feeding part and move the material box to the frame feeding and discharging position, and the pushing mechanism is configured to push the frame to be tested out of the material box at the frame feeding and discharging position;

the conveying mechanism is also configured to convey the magazine loaded with the detected frame at the frame loading and unloading level to the unloading part.

The material boxes at the feeding part are conveyed to the upper material position and the lower material position through the conveying mechanism, or the material boxes at the upper material position and the lower material position are conveyed back to the discharging part, so that the material boxes are conveniently butted with the pushing mechanism; the frame in the material box is pushed out through the material pushing mechanism, so that the frame can be clamped by the material pushing mechanism conveniently, and the working efficiency is improved.

Optionally, the carrying mechanism comprises a magazine translation part, a magazine lifting part and a magazine clamping part, the magazine clamping part is mounted on the magazine lifting part, and the magazine lifting part is mounted on the magazine translation part; the material box clamping part is used for clamping a material box, the material box lifting part is used for driving the material box to lift, and the material box translation part is used for driving the material box to translate.

The magazine is clamped by the magazine clamping part, the position of the magazine in the space is adjusted by the magazine translation part and the magazine lifting part, the structure is simple, the clamping is reliable, and the feeding and discharging efficiency can be improved.

Optionally, the material box clamping part comprises an installation frame, a material box bracket, a material box limiting block, a clamping block and a clamping block driving part; the material box limiting block is arranged in the middle of one side, facing the material box, of the mounting frame, the material box bracket is arranged on the lower portion of one side, facing the material box, of the mounting frame, and the clamping block is arranged on the clamping block driving piece and located above the material box bracket; the clamping block driving part drives the clamping block to move relative to the material box bracket so as to clamp or release the material box.

Hold the bottom of magazine through the magazine bracket, drive the top that the clamp splice carried the magazine through the clamp splice driving piece, support the side of magazine through the magazine stopper, can grasp the magazine firmly, can not produce and rock.

Optionally, the number of the conveying mechanisms is two, the two conveying mechanisms are arranged side by side, the two conveying mechanisms are configured to operate circularly, and in the process that the first conveying mechanism conveys the material box from the frame loading and unloading position to the frame loading and unloading position, the second conveying mechanism conveys the material box from the loading position to the frame loading and unloading position.

Through two transport mechanism circulation operations, can accelerate the unloading process of going up, improve unloading efficiency of going up.

Optionally, the automatic chip detection device further comprises an NG blanking part, wherein the NG blanking part is configured to push the detected unqualified frame to an NG material box;

the NG discharging part comprises an NG pushing assembly and an NG carrying mechanism, and the NG pushing assembly pushes unqualified frames into an NG material box;

NG transport mechanism includes NG magazine clamping part and NG magazine lift portion, and NG magazine clamping part is configured into the centre gripping NG magazine, and NG magazine lift portion drives NG magazine clamping part and goes up and down.

By configuring the NG blanking part, the NG material box can be collected on unqualified frames, and subsequent centralized processing is facilitated.

Drawings

Fig. 1 is a schematic perspective view of an alternative embodiment of the present invention.

Fig. 2 is a schematic diagram of a three-dimensional structure of the frame for detection according to the present invention.

Fig. 3 is a schematic perspective view of a magazine storing the frame shown in fig. 2.

Fig. 4 is a schematic perspective view of the feeding and discharging part of the present invention.

Fig. 5 is a schematic perspective view of fig. 4 from another perspective.

Fig. 6 is a front view of fig. 4.

Fig. 7 is a schematic perspective view of a carrying mechanism according to an embodiment of the present invention.

Fig. 8 is a left side view of fig. 7.

Fig. 9 is a schematic perspective view of the cartridge holder in the transport mechanism shown in fig. 7.

Fig. 10 is a left side view of fig. 9.

Fig. 11 is a schematic perspective view of another embodiment of the carrying mechanism of the present invention.

Fig. 12 is a left side view of fig. 11.

Fig. 13 is a schematic perspective view of the feeding mechanism of the present invention.

Fig. 14 is a front view of fig. 13.

Fig. 15 is a schematic perspective view of the bearing part of the present invention.

Fig. 16 is a schematic perspective view of a detection unit according to the present invention.

Fig. 17 is a schematic perspective view of the camera adjustment assembly in the inspection unit shown in fig. 16.

Fig. 18 is a front view of fig. 17.

Fig. 19 is a schematic perspective view of the NG pushing assembly of the present invention.

Fig. 20 is a front view of fig. 19.

Fig. 1 to 20 include:

a chip automatic detection device 1;

the feeding and discharging device comprises a feeding and discharging part 10, a feeding part 11, a feeding plate 111, a pushing block 112, a pushing block cylinder 113, a feeding part 12, a motor 121, a belt 122, a width adjusting mechanism 13, a pushing mechanism 14, a carrying mechanism 15, a material box translation part 151, a material box lifting part 152, a material box clamping part 153, a material box bracket 161, a material box limiting block 162, a clamping block 163, a clamping block driving part 164 and an installation frame 165;

the device comprises a pushing and feeding mechanism 20, a clamping component 21, a clamping jaw 211, a clamping jaw air cylinder 212, a pressure sensing component 213, a connecting block 214, a transverse moving component 22, a driving motor 221, a synchronous belt mechanism 222 and a sliding rail component 223;

the device comprises a bearing part 30, a detection platform 31, a first translation assembly 32, a second translation assembly 33 and a pressing assembly 34;

a detection unit 40, a camera 41, a camera adjustment unit 42, a pitch adjustment motor 421, an advance/retreat motor 422, and a lift motor 423;

the device comprises an NG blanking part 50, an NG pushing assembly 51, a pushing block 511, a pressure sensing assembly 512, a connecting block 513, a synchronous belt mechanism 514, a motor 515, a sliding rail assembly 516, an NG conveying mechanism 52, an NG material box clamping part 521 and an NG material box lifting part 522;

frame 100, magazine 200, silo 201, NG magazine 300.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, the present invention relates to an automatic chip detection device 1, which is used for detecting a chip and a bonding wire fixed on a frame 100.

Fig. 2 is a perspective view of the frame 100. The frame 100 is mounted with a chip and bonding wires: the chip is attached to the frame 100, and the nodes on the chip are connected to the nodes on the frame 100 by bonding wires. The utility model discloses whether specifically be used for detecting the chip mounting unusual to and the bonding wire welding is unusual.

The frame 100 is stored in the magazine 200. Fig. 3 shows a perspective view of the magazine 200. The material box 200 is layered, a plurality of horizontal material grooves 201 are arranged on two opposite side plates of the material box 200, and two side edges of the bonded frame 100 are plugged into the material grooves 201 on the same horizontal plane respectively.

Referring to fig. 1 again, the automatic chip detection device 1 mainly includes a pushing and feeding mechanism 20, a carrying portion 30 and a detection portion 40. Optionally, the automatic chip detection device 1 further includes a loading and unloading part 10 and an NG unloading part 50.

Wherein: the push-feed mechanism 20 is configured to clamp and convey the frame 100 to be detected stored in the magazine 200 to the bearing portion 30, and push back the qualified frame 100 after detection to the magazine 200;

the carrying section 30 is configured to carry and fix the frame 100 to be detected;

the detection part 40 is configured to detect the chip and the bonding wire on the frame 100 carried on the carrier part 30.

The utility model improves the efficiency of feeding and discharging by conveying the frame 100 to be detected and qualified after detection through the pushing and feeding mechanism 20; the detection part 40 detects the chips and bonding wires on the frame 100 loaded on the loading part 30 comprehensively, so that the detection efficiency is improved.

In order to further improve the loading and unloading efficiency of the frame 100, a loading and unloading part 10 can be installed in front of the material pushing mechanism 20; in order to collectively process the frames 100 that have failed the detection, the NG blanking unit 50 may be installed at a subsequent stage of the detection unit 40.

The following describes each component of the automatic chip detection device 1 in detail.

As shown in fig. 4 to 6, as an alternative embodiment, the automatic chip detection device 1 may include a loading and unloading unit 10. The feeding and discharging part 10 comprises a feeding part 11 and a discharging part 12 which are sequentially installed along the vertical direction from bottom to top, and the feeding part is used for feeding materials at the lower layer and discharging materials at the upper layer. The loading part 11 is configured to carry and transport the magazine 200 loaded with the frame 100 to be tested, and the unloading part 12 is configured to carry and transport the magazine 200 loaded with the frame 100 qualified in the test.

The loading section 11 includes a loading plate 111, a pusher 112, and a pusher cylinder 113. The pusher cylinder 113 is mounted on the upper plate 111, and the pusher 112 is mounted on the pusher cylinder 113 above the upper plate 111. Specifically, the feeding plate 111 is mounted above the bottom plate of the feeding and discharging portion 10 via a bracket, the push block cylinder 113 is mounted between the feeding plate 111 and the bottom plate, the push block 112 passes through the feeding plate 111 and extends downward and is fixed on a movable part of the push block cylinder 113, and the feeding plate 111 is provided with a slot along the moving direction of the push block 112 for the push block 112 to pass through. The pushing block cylinder 113 drives the pushing block 112 to move, and the material box 200 on the feeding plate 111 is pushed to a material box feeding position.

The feeding portion 12 includes a motor 121 and a belt 122, and the belt 122 is used for carrying the magazine 200. The motor 121 drives the belt 122 to rotate, and the magazine 200 loaded with the qualified frame 100 is received from the magazine blanking position.

The loading and unloading part 10 which integrates the loading part 11 and the unloading part 12 can fully utilize the space in the vertical direction and reduce the volume of the whole device; by arranging the feeding and discharging part 10, the feeding and discharging path can be shortened, and the feeding and discharging efficiency can be improved.

In one embodiment, optionally, the feeding and discharging portion 10 further includes a width adjusting mechanism 13, and the width adjusting mechanism 13 is configured to adjust a distance between two side plates of the feeding and discharging portion 10 to adapt to feeding and discharging of cartridges 200 with different sizes. As shown in fig. 6, the left side plate is mounted on the shaft, and left and right positions can be adjusted and locked by the locking assembly.

The width adjusting mechanism 13 is used for adjusting the distance between the side plates, so that the feeding and discharging part 10 can adapt to material boxes 200 with different sizes, and the application range of the detection device is widened.

As shown in fig. 1, optionally, the feeding and discharging part 10 further includes a material pushing mechanism 14 and at least one carrying mechanism 15, the carrying mechanism 15 is configured to move the material box 200 at the material box feeding position out of the feeding part 11 and move to the frame feeding and discharging position, and the material pushing mechanism 14 is configured to push the frame 100 to be tested out of the material box 200 at the frame feeding and discharging position; the conveying mechanism 15 is also configured to convey the magazine 200 loaded with the detected frame 100 at the frame loading and unloading level to the unloading section 12.

The material box 200 of the feeding part 11 is conveyed to the upper and lower material positions through the conveying mechanism 15, or the material box 200 at the upper and lower material positions is conveyed back to the discharging part 12, so that the material box is conveniently butted with the pushing mechanism 20; the frame 100 in the material box 200 is pushed out by the material pushing mechanism 14, so that the frame 100 is clamped by the material pushing and feeding mechanism 20 conveniently, and the working efficiency is improved.

The pushing mechanism 14 may be any one of the prior art structures, such as a pneumatic cylinder, a hydraulic cylinder, or an electric push rod.

As shown in fig. 7 and 8, the carrying mechanism 15 may include a cartridge translation portion 151, a cartridge lifting portion 152, and a cartridge clamping portion 153, the cartridge clamping portion 153 is mounted on the cartridge lifting portion 152, and the cartridge lifting portion 152 is mounted on the cartridge translation portion 151. The magazine clamping portion 153 is configured to clamp the magazine 200, and the magazine 200 is carried to the loading position by being driven by the magazine lifting portion 152 and the magazine translation portion 151. The magazine lifting portion 152 is used for driving the magazine 200 to lift, and the magazine translation portion 151 is used for driving the magazine 200 to translate. The magazine elevating unit 152 is generally configured by combining a motor with a screw, and the magazine translating unit 151 is often configured by combining a motor with a slide rail.

The magazine 200 is clamped by the magazine clamping part 153, the position of the magazine 200 in the space is adjusted by the magazine translation part 151 and the magazine lifting part 152, the structure is simple, the clamping is reliable, and the feeding and discharging efficiency can be improved.

As shown in fig. 9 and 10, optionally, the cartridge clamping portion 153 includes a mounting bracket 165, a cartridge holder 161, a cartridge stopper 162, a clamp block 163, and a clamp block driver 164.

The mounting bracket 165 is used to mount the cartridge holding portion 153 on a movable part of the cartridge lifting portion 152. The cartridge stopper 162 is installed in the middle of one side of the mounting bracket 165 facing the cartridge 200, the cartridge holder 161 is installed at the lower part of one side of the mounting bracket 165 facing the cartridge 200, and the clamping block 163 is installed on the clamping block driving member 164 and located above the cartridge holder 161; the clamp block drive 164 is typically an air cylinder. The clamp block driver 164 moves the clamp block 163 up and down relative to the cartridge holder 161 to clamp or release the cartridge 200.

Hold the bottom of magazine 200 through magazine bracket 161, drive the top that the clamp splice 163 cliied magazine 200 through clamp splice driving piece 164, come to support the side of magazine 200 through magazine stopper 162, can firmly grasp magazine 200, can not produce and rock.

As shown in fig. 1, the carrying mechanism 15 is optionally two. As shown in fig. 11 and 12, the two conveyance mechanisms 15 have the same structure and are arranged side by side, and the two conveyance mechanisms 15 realize the circulation operation by the cooperation between the two sets of magazine translation portions 151 and the magazine elevating portions 152. While the first transport mechanism 15 transports the cartridge 200, which has been detected, from the upper and lower positions of the frame to the lower portion 12, the second transport mechanism 15 transports the cartridge 200 from the upper portion 11 to the upper and lower positions of the frame for detection, thereby realizing continuous detection without waiting.

Through 15 circulation operations of two handling mechanisms, can accelerate the unloading process of going up, improve unloading efficiency of going up.

As an alternative embodiment, as shown in fig. 13 and 14, the material pushing mechanism 20 includes a clamping assembly 21 and a traverse assembly 22, wherein the clamping assembly 21 is mounted on the traverse assembly 22; the clamping assembly 21 is configured to clamp or push the frame 100, and the traverse assembly 22 is configured to move the frame 100 between the magazine 200 and the carrier 30.

The clamping assembly 21 clamps or pushes the frame 100, and the traverse assembly 22 drives the frame 100 to move between the material box 200 and the bearing part 30, so that the frame 100 can be automatically loaded and unloaded, and the loading and unloading efficiency is improved.

In this embodiment, optionally, the clamping assembly 21 includes a clamping jaw 211, a clamping jaw air cylinder 212, and a pressure sensing assembly 213, wherein the clamping jaw 211 is mounted on the clamping jaw air cylinder 212, and the pressure sensing assembly 213 is mounted on a mounting plate of the clamping jaw air cylinder 212.

The clamping jaw cylinder 212 drives the clamping jaw 211 to open and close, the clamping jaw 211 clamps the front end of the frame 100 when the frame 100 is taken out of the material box 200, the clamping jaw 211 is closed when the frame 100 is pushed back into the material box 200 from the detection platform 31, and the front end of the clamping jaw 211 pushes the front end of the frame 100 to move.

The pressure sensing assembly 213 is used to detect if there is a jam when the jaws 211 push the frame 100 back into the magazine 200. When the frame 100 is pushed back into the material box 200, if the material is jammed, the sensing piece of the pressure sensing component 213 leaves the photoelectric sensor, and stops acting, and the machine station gives an alarm.

Optionally, the traverse assembly 22 includes a driving motor 221, a timing belt mechanism 222 and a slide rail assembly 223, the clamping jaw cylinder 212 is mounted on the timing belt mechanism 222 through the connecting block 214 and is slidably fitted on the slide rail assembly 223, and the driving motor 221 drives the timing belt mechanism 222 to rotate and drives the clamping assembly 21 to move along the slide rail assembly 223.

The clamping assembly 21 adopts the clamping jaws 211 and the clamping jaw air cylinders 212, and the transverse moving assembly 22 adopts the driving motor 221 and the synchronous belt mechanism 222, so that the structure is simple, the cost is low, and the installation and debugging are convenient.

As shown in fig. 15, the carrying part 30 optionally includes a detection platform 31, a first translation assembly 32, a second translation assembly 33 and a pressing assembly 34.

The pressing assembly 34 is mounted on the testing platform 31 and configured to press the frame 100 to be tested on the testing platform 31. The pressing assembly 34 drives the pressing block to press the frame 100 through an air cylinder or an electromagnet.

The detection platform 31 is mounted on the first translation assembly 32 through a mounting frame, and the mounting position of the detection platform 31 can be adjusted on the mounting frame. The spacing of the inspection platforms 31 may be adjusted to accommodate frames 100 of different specifications. The first translating assembly 32 is mounted on the second translating assembly 33.

The first translating assembly 32 is configured to drive the detecting platform 31 to move along a first direction, and the second translating assembly 33 is configured to drive the first translating assembly 32 to move along a second direction perpendicular to the first direction by a first distance, where the first distance is a distance between two adjacent rows of chips on the frame 100 to be detected on the detecting platform 31.

The first translation assembly 32 is matched with the second translation assembly 33, so that the position of the detection platform 31 on the horizontal plane can be adjusted at will, and the detection part 40 can clearly detect the frame 100 to be detected; the frame 100 to be inspected can be firmly fixed on the inspection platform 31 by the pressing assembly 34.

Optionally, there are two bearing portions 30, and the two bearing portions 30 move in the second direction by a second distance under the driving of the respective second translation assemblies 33.

By arranging the two bearing parts 30, the material can be circularly loaded, and the detection efficiency is improved; the two bearing portions 30 are driven by the respective second translation assemblies 33 to move a second distance in the second direction, so that the two detection platforms 31 can be prevented from colliding when moving in the first direction.

As shown in fig. 16, optionally, the detecting part 40 includes five cameras 41, four cameras 41 are configured to detect respectively toward the bonding wires connected between the frame 100 on the carrying part 30 and the chip, and one camera 41 detects toward the front surface of the chip in the frame 100 on the carrying part 30.

The detection part 40 adopts five cameras 41, and can carry out comprehensive detection on the frame 100 to be detected in five directions, so as to avoid missing detection.

Optionally, the detecting portion 40 further comprises at least one camera adjusting assembly 42 for adjusting the camera 41, the camera adjusting assembly 42 being configured to adjust the angle and/or position of the camera 41 mounted on the camera adjusting assembly 42. In the present embodiment, the four cameras except the downward-facing camera 41 are equipped with the camera adjustment assemblies 42.

As shown in fig. 17 and 18, in one embodiment, the camera adjusting assembly 42 includes a pitch adjusting motor 421, a forward/backward moving motor 422 and a lift motor 423, the camera 41 is mounted on the pitch adjusting motor 421, the pitch adjusting motor 421 is mounted on the forward/backward moving motor 422, and the forward/backward moving motor 422 is mounted on the lift motor 423. Position adjustment is achieved through cooperation of the three motors, the lifting motor 423 is used for adjusting the vertical position of the camera 41, the advancing and retreating motor 422 is used for adjusting the horizontal position of the camera 41, and the pitching adjustment motor 421 is used for adjusting the pitching angle of the camera 41.

The position of the camera 41 can be adjusted by the camera adjusting component 42, so that the camera 41 can focus accurately, take a picture clearly, and the size of the image is proper.

Alternatively, the vertically downward camera 41 may be provided with the elevation motor 423 without providing the pitch adjustment motor 421 and the advance and retreat motor 422, and only the elevation of the camera 41 is required.

As shown in fig. 1, optionally, the automatic chip detection device 1 further includes an NG blanking portion 50, and the NG blanking portion 50 is configured to push the frame 100 detected to be defective to an NG magazine 300.

The NG blanking part 50 comprises an NG pushing assembly 51 and an NG conveying mechanism 52, and the NG pushing assembly 51 pushes the unqualified frame 100 into the NG material box 300.

As shown in fig. 19 and 20, the NG pushing assembly 51 optionally includes a pushing block 511, a pressure sensing assembly 512, a connecting block 513, a timing belt mechanism 514, a motor 515, and a sliding rail assembly 516.

The pushing block 511 is mounted on the timing belt mechanism 514 through a connecting block 513 and is slidably fitted on the sliding rail assembly 516, and the motor 515 drives the timing belt mechanism 514 to rotate and drives the pushing block 511 to move along the sliding rail assembly 516. The pressure sensing assembly 512 is mounted on the pushing block 511, and the pressure sensing assembly 512 is used for detecting whether the frame 100 is stuck when the pushing block 511 pushes the frame to the NG magazine 300. If the material is blocked, the sensing piece of the pressure sensing assembly 512 leaves the photoelectric sensor, the action is stopped, and the machine gives an alarm.

As shown in fig. 1, the NG conveying mechanism 52 includes an NG cartridge clamping portion 521 and an NG cartridge lifting portion 522, the NG cartridge clamping portion 521 is configured to clamp the NG cartridge 300, and the NG cartridge lifting portion 522 drives the NG cartridge clamping portion 521 to lift.

By arranging the NG blanking part 50, the unqualified frames 100 can be collected into the NG material boxes 300, so that the subsequent centralized processing is facilitated.

As shown in fig. 1, the action flow of the present invention is as follows:

1. the feeding and discharging part 10 firstly conveys the material box 200 filled with the frame 100 to a preset position, and the conveying mechanism 15 carries out the material box 200 from the feeding and discharging part 10 and moves the material box to a feeding position;

2. the pushing mechanism 14 pushes the frame 100 in the magazine 200 out for a distance, such as 5cm;

3. the pushing and feeding mechanism 20 clamps the frame 100 and pulls the frame to the detection platform 31 of the bearing part 30, and the bearing part 30 fixes the frame 100;

4. the bearing part 30 moves to the lower part of the detection part 40, and the detection part 40 detects the chips and the bonding wires on the frame 100 one by one;

5. the qualified frame 100 is conveyed to an OK blanking position (original feeding position) by the bearing part 30 and pushed back into the raw material box 200 by the pushing and feeding mechanism 20; the frame 100 of the NG is conveyed to an NG blanking position by the bearing part 30 and pushed into an NG material box 300 through the NG blanking part 50;

alternatively, the NG frames 100 are all placed in the material box 200, recorded, and manually taken out by a subsequent process.

The invention has been described above with a certain degree of particularity and detail. It will be understood by those of ordinary skill in the art that the description of the embodiments is merely exemplary and that all changes that may be made without departing from the true spirit and scope of the present invention are intended to be within the scope of the present invention. The scope of the invention is defined by the appended claims rather than by the foregoing description of the embodiments.

Claims (14)

1. An automatic chip detection device is used for detecting a chip and a bonding wire fixed on a frame and is characterized by comprising a pushing and feeding mechanism, a bearing part and a detection part; wherein:

the pushing and feeding mechanism is configured to clamp and convey the frame to be detected stored in the material box to the bearing part, and push the qualified frame back to the material box after detection;

the bearing part is configured to bear and fix the frame to be detected;

the detection part is configured to detect a chip and a bonding wire on the frame carried on the carrying part.

2. The apparatus of claim 1, wherein the feeding mechanism comprises a clamping assembly and a traverse assembly, the clamping assembly being mounted on the traverse assembly; the clamping component is configured to clamp or push the frame, and the traverse component is configured to drive the frame to move between the magazine and the bearing part.

3. The automatic chip detection device according to claim 2, wherein the clamping assembly comprises a clamping jaw, a clamping jaw cylinder and a pressure sensing assembly, the clamping jaw is mounted on the clamping jaw cylinder, and the pressure sensing assembly is mounted on a mounting plate of the clamping jaw cylinder; the clamping jaw cylinder drives the clamping jaw to open and close, and the pressure sensing assembly is used for detecting whether the clamping jaw is blocked or not when the clamping jaw pushes the frame back to the material box;

the transverse moving assembly comprises a driving motor, a synchronous belt mechanism and a sliding rail assembly, the clamping jaw air cylinder is installed on the synchronous belt mechanism and is in sliding fit with the sliding rail assembly, and the driving motor drives the synchronous belt mechanism to rotate and drives the clamping assembly to move along the sliding rail assembly.

4. The automatic chip detection device according to claim 1, wherein the carrier comprises a detection platform, a first translation assembly, a second translation assembly and a pressing assembly;

the pressing assembly is arranged on the detection platform and is configured to press the frame to be detected on the detection platform;

the detection platform is arranged on a first translation assembly, and the first translation assembly is arranged on the second translation assembly;

the first translation assembly is configured to drive the detection platform to move along a first direction, the second translation assembly is used to drive the first translation assembly to move along a second direction perpendicular to the first direction by a first distance, and the first distance is a distance between two adjacent rows of chips on the frame to be detected on the detection platform.

5. The apparatus according to claim 4, wherein the number of the carrying portions is two, and the two carrying portions are moved by a second distance in the second direction by respective second translation assemblies.

6. The apparatus according to claim 1, wherein the inspection portion comprises five cameras, four cameras are configured to inspect the bonding wires connected between the frame on the carrier and the chip, respectively, and one camera is configured to inspect the front surface of the chip in the frame on the carrier.

7. The automatic chip detection device according to claim 1, wherein the detection portion further comprises at least one camera adjustment component for adjusting a camera, the camera adjustment component being configured to adjust an angle and/or a position of the camera mounted on the camera adjustment component;

the camera adjusting assembly comprises a pitching adjusting motor, a forward and backward motor and a lifting motor, the camera is installed on the pitching adjusting motor, the pitching adjusting motor is installed on the forward and backward motor, and the forward and backward motor is installed on the lifting motor; the lifting motor is used for adjusting the vertical position of the camera, the advancing and retreating motor is used for adjusting the horizontal position of the camera, and the pitching adjusting motor is used for adjusting the pitching angle of the camera.

8. The automatic chip detection device according to claim 1, further comprising a loading and unloading part, wherein the loading and unloading part comprises a loading part and a unloading part which are sequentially installed from bottom to top along a vertical direction, the loading part is configured to carry and convey a magazine loaded with a frame to be detected, and the unloading part is configured to carry and convey a magazine loaded with a frame qualified for detection;

the feeding part comprises a feeding plate, a pushing block and a pushing block cylinder, the pushing block cylinder is installed on the feeding plate, the pushing block is installed on the pushing block cylinder and located above the feeding plate, and the pushing block cylinder drives the pushing block to move so as to push the material boxes on the feeding plate to a material feeding position of the material boxes;

the discharging part comprises a motor and a belt, the motor drives the belt to rotate, and a material box loaded with a qualified frame is received from the material box discharging position.

9. The automatic chip detection device according to claim 8, wherein the loading and unloading portion further comprises a width adjustment mechanism for adjusting a distance between two side plates of the loading and unloading portion to adapt to loading and unloading of material boxes of different sizes.

10. The automatic chip detection device according to claim 8, wherein the loading/unloading section further comprises a pushing mechanism and at least one carrying mechanism, the carrying mechanism is configured to move the magazine at the magazine loading position out of the loading section and move the magazine to a frame loading/unloading position, and the pushing mechanism is configured to push the frame to be detected out of the magazine at the frame loading/unloading position;

the carrying mechanism is also configured to carry the material box loaded with the detected frame at the frame loading and unloading position to the blanking part.

11. The automatic chip detection device according to claim 10, wherein the carrying mechanism comprises a magazine translation portion, a magazine lifting portion, and a magazine clamping portion, the magazine clamping portion is mounted on the magazine lifting portion, and the magazine lifting portion is mounted on the magazine translation portion; the magazine clamping part is used for clamping a magazine, the magazine lifting part is used for driving the magazine to lift, and the magazine translation part is used for driving the magazine to translate.

12. The automatic chip detection device according to claim 11, wherein the magazine clamping portion comprises an installation frame, a magazine bracket, a magazine stopper, a clamping block and a clamping block driving member; the material box limiting block is arranged in the middle of one side, facing the material box, of the mounting frame, the material box bracket is arranged on the lower portion of one side, facing the material box, of the mounting frame, and the clamping block is arranged on the clamping block driving piece and located above the material box bracket; the clamping block driving part drives the clamping block to move relative to the material box bracket, so that the material box is clamped or released.

13. The automatic chip detection device according to claim 10, wherein the number of the carrying mechanisms is two, the two carrying mechanisms are arranged side by side,

the two conveying mechanisms are configured to operate in a circulating manner, and the second conveying mechanism conveys the material box from the feeding part to the frame feeding and discharging position in the process that the first conveying mechanism conveys the material box from the frame feeding and discharging position to the discharging part.

14. The automatic chip detection device according to claim 1, further comprising an NG blanking portion configured to push the frame detected to be unqualified to an NG magazine;

the NG discharging part comprises an NG pushing assembly and an NG carrying mechanism, and the NG pushing assembly pushes unqualified frames into an NG material box;

NG transport mechanism includes NG magazine clamping part and NG magazine lift portion, NG magazine clamping part is configured as the centre gripping the NG magazine, NG magazine lift portion drives NG magazine clamping part goes up and down.

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