Apparatus for detecting chips in a tape

Abstract

The utility model belongs to chip detection technical field provides a kind of device for carrying out detection to chip in carrier tape, it first utilizes the plurality of limiting protrusions on limiting plate respectively to be inserted into the gap between the plurality of chip slots and its inside chip along carrier tape width direction and chip is pressed in tightly in chip slot, limiting protrusion presses in tightly force given chip towards the length direction of carrier tape;After again utilizing the plurality of first probes on first detection device respectively with the plurality of pins of chip one side one-one contact, first probe presses in tightly force given chip towards the width direction of carrier tape;So as to realize that chip is firmly fixed in chip slot, chip cannot appear displacement in chip slot, when carrying out test to chip, first probe and second probe cannot be contacted with the pin of chip, and then it is guaranteed that chip detection device can carry out normal detection to chip.

Description

Technical Field

[0001] This invention belongs to the field of chip testing technology, and in particular relates to a device for testing chips in a carrier tape. Background Technology

[0002] In the field of chip manufacturing, the produced granular chips are usually packaged using long strip carrier tapes. The carrier tapes have multiple evenly arranged chip slots, in which the chips are stored and sealed with a sealing film.

[0003] In the production of electronic products that require chips, firstly, a film-peeling device tears open the sealing film on the chip carrier tape, exposing the chip in the chip slot. Then, a feeding device transports the chip carrier tape to a chip testing device, after which the feeding device stops, and the chip testing device tests the chips. When the chip testing device detects a defective chip on the chip carrier tape, the worker manually removes the defective chip and then manually inserts a good chip, thus ensuring that every chip on the carrier tape used in the production process of electronic products is a good product, thereby ensuring the production quality of electronic products.

[0004] In existing chip testing devices, multiple probes contact the chip's pins one by one for testing. However, because there are gaps within the chip slot, the chip can shift within the slot, potentially causing the probes to lose contact with the pins. When this happens, the chip testing device cannot perform accurate testing, resulting in incorrect test results. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for testing chips in a carrier tape, which ensures that the probe does not detach from the pin when in contact, thus guaranteeing the normal testing of the chip by the chip testing device.

[0006] This invention is implemented as follows: a device for detecting chips in a carrier tape, wherein the carrier tape has multiple equally spaced chip slots, each chip slot contains one chip, and the pins on both sides of the chip are arranged along the length of the carrier tape. The device includes a substrate, on which a first detection device, a second detection device, a first driving device, and a second driving device are symmetrically arranged. The first detection device and the second detection device are fixedly connected by a connecting plate. The first detection device and the second detection device are driven together to move up and down by the first driving device, and the second detection device is also driven to move up and down independently by the second driving device.

[0007] The first detection device has a plurality of first probes fixed at its bottom, the number of which is the same as the number of pins on one side of the chip; the second detection device has a plurality of second probes, the number of which is the same as the number of pins on the other side of the chip.

[0008] A limiting plate is rotatably connected to the substrate. A spring is provided between the substrate and the limiting plate. A plurality of limiting protrusions are fixedly provided at the lower part of the end of the limiting plate away from the rotatable connection between the limiting plate and the substrate.

[0009] A swing arm is rotatably connected to the first detection device. A roller is rotatably connected to the end of the swing arm away from the first detection device. The roller is located above the limiting plate. When the first driving device drives the first detection device to move downward, the roller contacts the limiting plate. The roller then drives the limiting plate to move downward, so that the multiple limiting protrusions are respectively inserted into the gaps between the chips in the multiple chip slots along the width direction of the carrier tape, and the chips are pressed against the chip slots.

[0010] Specifically, the first driving device includes a first motor, the shaft of the first motor is fixedly connected to a first lead screw, a first nut is threaded onto the first lead screw, and the first nut is fixedly connected to the first detection device through a first connecting rod.

[0011] Specifically, the second drive device includes a second motor, the shaft of the second motor is fixedly connected to an eccentric wheel, the eccentric wheel is fixedly connected to a moving block, and the moving block is fixedly connected to the second detection device through a brake line.

[0012] Specifically, the brake line includes an outer tube and a metal wire disposed inside the outer tube and movable relative to the outer tube. One end of the metal wire is fixedly connected to the moving block, and the other end of the metal wire is fixedly connected to the second detection device.

[0013] Specifically, the limiting protrusion is a wedge-shaped structure.

[0014] This invention first utilizes multiple limiting protrusions on a limiting plate to respectively engage with multiple chip slots and the gaps between chips within them along the width direction of the carrier tape, thus firmly securing the chips within the chip slots. The limiting protrusions apply a clamping force to the chips in the length direction of the carrier tape. Then, multiple first probes on a first detection device contact multiple pins on one side of the chip one by one, with the first probes applying a clamping force to the chip in the width direction of the carrier tape. This ensures that the chips are firmly fixed within the chip slots, preventing displacement. During chip testing, the first and second probes do not lose contact with the chip pins, thereby ensuring that the chip detection device can perform normal chip testing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the carrier tape provided in an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the chip provided in an embodiment of the present invention.

[0017] Figure 3 This is a front view of the chip provided in this embodiment of the present invention, used for detecting the chip in the carrier tape.

[0018] Figure 4 This is a rear view of the chip provided in this embodiment of the present invention, used for detecting the chip in the carrier tape.

[0019] Figure 5 This is a schematic diagram of the first driving device provided in an embodiment of the present utility model.

[0020] Figure 6 This is a schematic diagram from another perspective of the first driving device provided in an embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram of the second driving device provided in an embodiment of the present utility model.

[0022] Figure 8 This is a schematic diagram showing that the multiple limiting protrusions of the limiting plate provided in this embodiment of the utility model are respectively inserted into multiple chip slots and the gaps between the chips in the slots along the width direction of the carrier tape.

[0023] Figure 9 yes Figure 8 Enlarged diagram of point A in the diagram.

[0024] Figure 10 yes Figure 8 A schematic diagram of its breakdown.

[0025] Figure 11 yes Figure 10 Enlarged diagram of point B in the image. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] like Figures 1-11As shown in the figure, this utility model provides a device for detecting chips in a carrier tape. The carrier tape 1 is provided with a plurality of chip slots 11 arranged at equal intervals. Each chip slot 11 contains a chip 12. The pins 13 on both sides of the chip 12 are arranged along the length direction of the carrier tape 1. The device includes a substrate 2. A first detection device 3, a second detection device 4, a first driving device 5 and a second driving device 6 are symmetrically arranged on the substrate 2. The first detection device 3 and the second detection device 4 are fixedly connected by a connecting plate 7. The first detection device 3 and the second detection device 4 are driven together to move up and down by the first driving device 5. The second detection device 4 is also driven to move up and down independently by the second driving device 6.

[0028] The bottom of the first detection device 3 is provided with a plurality of first probes 31, the number of which is the same as the number of pins 13 on one side of the chip 12. The second detection device 4 is provided with a plurality of second probes 41, the number of which is the same as the number of pins 13 on the other side of the chip 12.

[0029] A limiting plate 8 is rotatably connected to the substrate 2. A spring (not shown) is provided between the substrate 2 and the limiting plate 8. When the downward pressure of the roller 33 on the limiting plate 8 disappears, the spring plays the role of resetting the limiting plate 8. A plurality of limiting protrusions 81 are fixedly provided at the lower part of the end of the limiting plate 8 away from the rotatable connection between the limiting plate 8 and the substrate 2.

[0030] A swing arm 32 is rotatably connected to the first detection device 3. A roller 33 is rotatably connected to the end of the swing arm 32 away from the first detection device 3. The roller 33 is located above the limiting plate 5.

[0031] The working principle of the device for detecting chips in a carrier tape provided by this utility model is as follows:

[0032] (1) First, the first driving device 5 drives the first detection device 3 and the second detection device 4 to move downward together, so that the roller 33 on the first detection device 3 contacts the limiting plate 8. The roller 33 drives the limiting plate 8 to move downward, so that the multiple limiting protrusions 81 respectively are inserted into the gap 14 between the multiple chip slots 11 and the chips 12 in the width direction of the carrier tape 1, and press the chips 12 against the chip slots 11, thereby positioning the chips 12 in the chip slots 11 along the length direction of the carrier tape 1.

[0033] (2) Next, the first driving device 5 drives the first detection device 3 and the second detection device 4 to continue to move downward, so that the multiple first probes 31 on the first detection device 3 contact the multiple pins 13 on one side of the chip 12 one by one. At this time, the multiple second probes 41 on the second detection device 4 have not yet contacted the multiple pins 13 on one side of the chip 12 one by one, thereby positioning the chip 12 in the chip slot 11 along the width direction of the carrier tape 1. At this time, the first detection device 3 can be used to detect the chip 12 through the multiple pins 13 on one side of the chip 12.

[0034] (3) Next, the second driving device 6 drives the second detection device 4 to continue moving downward, so that the multiple second probes 41 on the second detection device 4 contact the multiple pins 13 on the other side of the chip 12 one by one. At this time, the second detection device 4 can be used to detect the chip 12 through the multiple pins 13 on the other side of the chip 12.

[0035] This invention first utilizes multiple limiting protrusions 81 on a limiting plate 8 to respectively engage with multiple chip slots 11 and the gaps between chips 12 within them along the width direction of the carrier tape 1, thus firmly pressing the chips 12 into the chip slots 11. The pressing force applied by the limiting protrusions 81 to the chips 12 is directed towards the length direction of the carrier tape 1. Then, multiple first probes 31 on the first detection device 3 respectively contact multiple pins 13 on one side of the chips 12, with the pressing force applied by the first probes 31 to the chips 12 directed towards the width direction of the carrier tape 1. This ensures that the chips 12 are firmly fixed in the chip slots 11, preventing displacement within the chip slots 11. When testing the chips 12, the first probes 31 and second probes 41 will not disengage from the pins 13 of the chips 12, thereby ensuring that the chip detection device can perform normal testing on the chips 12.

[0036] like Figure 5 , 6 As shown, specifically, the first driving device 5 includes a first motor 51. The shaft of the first motor 51 is fixedly connected to a first lead screw 52. A first nut 53 is threaded onto the first lead screw 52. The first nut 53 is fixedly connected to the first detection device 3 via a first connecting rod 54. After the first motor 51 is started, the shaft of the first motor 51 rotates together with the first lead screw 52 in its original position. The first lead screw 52 drives the first nut 53 to move up and down, and the first nut 53 drives the first detection device 3 to move up and down. The first detection device 3 is fixedly connected to the second detection device 4 via a connecting plate 7, thereby achieving the purpose of the first driving device 5 driving the first detection device 3 and the second detection device 4 to move up and down together.

[0037] like Figure 7As shown, specifically, the second driving device 6 includes a second motor 61. The shaft of the second motor 61 is fixedly connected to an eccentric wheel 62, and the eccentric wheel 62 is fixedly connected to a moving block 63. The moving block 63 is fixedly connected to the second detection device 4 via a brake cable (not shown). Specifically, the brake cable includes an outer tube and a metal wire disposed inside the outer tube and movable relative to the outer tube. One end of the metal wire is fixedly connected to the moving block 63, and the other end of the metal wire is fixedly connected to the second detection device 4. After the second motor 61 is started, the shaft of the second motor 61 drives the eccentric wheel 62 to rotate. During the rotation, the eccentric wheel 62 continuously drives the moving block 63 to move up and down. The moving block 63 drives the second driving device 6 to move up and down via the metal wire in the brake cable, thereby achieving the purpose of the second driving device 6 driving the second detection device 4 to move up and down independently.

[0038] like Figure 8-11 As shown, specifically, the limiting protrusion 81 has a wedge-shaped structure. This shape of the limiting protrusion 81 facilitates the limiting protrusion 81 to be inserted into the gap (14) between the chip slot 11 and the chip 2 inside it along the width direction of the carrier tape 1.

[0039] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. An apparatus for detecting chips in a carrier tape, wherein the carrier tape (1) has a plurality of equally spaced chip slots (11), each chip slot (11) contains a chip (12), and pins (13) on both sides of the chip (12) are arranged along the length direction of the carrier tape (1), characterized in that, The device includes a base plate (2), on which a first detection device (3), a second detection device (4), a first driving device (5), and a second driving device (6) are symmetrically arranged. The first detection device (3) and the second detection device (4) are fixedly connected by a connecting plate (7). The first detection device (3) and the second detection device (4) are driven together to move up and down by the first driving device (5), and the second detection device (4) is also driven to move up and down independently by the second driving device (6). The first detection device (3) has a plurality of first probes (31) fixed at its bottom. The number of the first probes (31) is the same as the number of pins (13) on one side of the chip (12). The second detection device (4) has a plurality of second probes (41). The number of the second probes (41) is the same as the number of pins (13) on the other side of the chip (12). A limiting plate (8) is rotatably connected to the substrate (2). A spring is provided between the substrate (2) and the limiting plate (8). A plurality of limiting protrusions (81) are fixedly provided at the lower part of the end of the limiting plate (8) away from the rotatable connection between the limiting plate (8) and the substrate (2). A swing arm (32) is rotatably connected to the first detection device (3). A roller (33) is rotatably connected to one end of the swing arm (32) away from the first detection device (3). The roller (33) is located above the limiting plate (8). When the first driving device (5) drives the first detection device (3) to move downward so that the roller (33) contacts the limiting plate (8), the roller (33) drives the limiting plate (8) to move downward so that the multiple limiting protrusions (81) are respectively inserted into the multiple chip slots (11) and the gap (14) between the chips (12) in the width direction of the carrier tape (1) and press the chips (12) against the chip slots (11).

2. The apparatus for detecting chips in a carrier tape according to claim 1, characterized in that, The first driving device (5) includes a first motor (51), the shaft of the first motor (51) is fixedly connected to a first lead screw (52), a first nut (53) is threaded onto the first lead screw (52), and the first nut (53) is fixedly connected to the first detection device (3) through a first connecting rod (54).

3. The apparatus for detecting chips in a carrier tape according to claim 1, characterized in that, The second drive device (6) includes a second motor (61), the shaft of the second motor (61) is fixedly connected to an eccentric wheel (62), the eccentric wheel (62) is fixedly connected to a moving block (63), and the moving block (63) is fixedly connected to the second detection device (4) through a brake line.

4. The apparatus for detecting chips in a carrier tape according to claim 3, characterized in that, The brake line includes an outer tube and a metal wire disposed inside the outer tube and movable relative to the outer tube. One end of the metal wire is fixedly connected to the moving block (63), and the other end of the metal wire is fixedly connected to the second detection device (4).

5. The apparatus for detecting chips in a carrier tape according to claim 1, characterized in that, The limiting protrusion (81) has a wedge-shaped structure.

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