A braided tape leg lift prevention and detection alarm mechanism

Abstract

The present invention relates to the field of TMTT testing and packaging of semiconductor products, and specifically to a braided tape pin lift prevention and detection alarm mechanism, comprising a material transport turntable, a vacuum hose provided on one side of the material transport turntable, and a suction pen connected to the outer end of the vacuum hose via a connector. The present invention starts the material transport turntable to move the suction pen, starts the suction pen to suck up the device, starts the material transport turntable again, moves the suction pen to above the braided tape track, starts the pressing mechanism, and the pressing mechanism gradually blocks the vacuum hose by the pressing action, while shortening the distance the device descends until it is pressed into the carrier tape. The device at the bottom of the suction pen is judged by a braided tape feed port camera to determine whether it can be normally placed in the carrier tape, thereby preventing the device from rotating and tilting on the suction pen, causing the device pins to contact the edge of the track window during the feeding process, resulting in deformation of the pins and causing the pins to lift.

Description

Technical Field

[0001] The invention relates to the field of semiconductor product TMTT test packaging, and in particular to a braided tape curling prevention and detection alarm mechanism. Background Art

[0002] A detection and alarm system is a device or system that monitors specific physical or environmental parameters and issues an alarm or warning message when a parameter exceeds a set threshold or an abnormality occurs. Its primary purpose is to provide timely and accurate warnings so that appropriate preventative measures or actions can be taken to ensure safety or prevent potential accidents. Detection and alarm systems can be used in a variety of scenarios, including security monitoring, fire alarms, environmental monitoring, and industrial process monitoring.

[0003] Traditional tape inspection is usually performed manually through observation and cannot identify defects such as vertical deformation of pins through image detection. Prevention of device warping usually relies on motor torque value monitoring, which has low sensitivity and is prone to the escape of defective products with warped pins. Summary of the Invention

[0004] The purpose of the present invention is to provide a braid lift prevention and detection alarm mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A braided tape leg lift prevention and detection alarm mechanism, a material transport turntable, a vacuum hose is provided on one side of the material transport turntable, a connector is provided at the outer end of the vacuum hose, a suction pen is provided at the bottom end of the connector, a downward pressure mechanism is provided at the top end of the connector, and the downward pressure mechanism is located on the material transport turntable; the bottom end of the suction pen passes through the support arm at the bottom end of the material transport turntable, and a light-absorbing background plate is provided on the suction pen below the support arm.

[0007] The suction pen is provided with a spring, and the spring is located between the connecting head and the support arm;

[0008] A braided track is provided on one side of the material transport turntable, and the braided track is located below the suction pen;

[0009] Three track windows are provided on one side of the top of the braid track, a first bracket and a second bracket are provided on the other side of the top of the braid track, a laser rangefinder is provided on one side of the first bracket, a braid front camera is provided on the top of one side of the second bracket, and a braid inlet camera is provided on one side of the bottom end of the braid track;

[0010] The braid track is located on one side of the track window and is movably provided with a plurality of carrier tapes. The carrier tapes are used to place braided components. A light-transmitting hole is opened at the bottom of the carrier tape. The braid feed port camera is used to correspond to the light-transmitting hole.

[0011] The three track windows are the first track window, the second track window and the third track window.

[0012] The first track window is located directly above the tape inlet camera and is used to feed the material into the carrier tape.

[0013] The second track window is located directly below the laser rangefinder.

[0014] The third track window is located directly below the camera on the front of the tape.

[0015] Preferably, a track vacuum pipe is provided on the other side of the bottom end of the braided track.

[0016] Preferably, a light source is provided at the bottom end of the braided front camera, and the light source is provided on one side of the second bracket.

[0017] Preferably, the vacuum hose is made of rubber.

[0018] Preferably, the pressing mechanism is a cylinder.

[0019] Preferably, the opening of the track window is the same size as the top opening of the carrier tape.

[0020] Preferably, several carrier tapes are arranged integrally.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. A braided tape pin lift prevention and detection alarm mechanism is provided with a braided tape feed port camera and a suction pen. When in use, the suction pen is moved by starting the transport turntable, and the suction pen is started to suck up the device. The transport turntable is started again to move the suction pen to above the braided tape track, and the downward pressing mechanism is started. The downward pressing action of the downward pressing mechanism gradually blocks the vacuum hose and shortens the distance the device descends until it is pressed into the carrier tape. The braided tape feed port camera is used to determine whether the device at the bottom of the suction pen has rotated and skewed on the suction nozzle, and whether it can be placed in the carrier tape normally. This prevents the device from rotating and skewing on the suction pen, resulting in the pins of the device contacting the edge of the track window during the feeding process, causing the pins to deform and lead to lift.

[0023] 2. This tape lift prevention and detection alarm mechanism utilizes a laser rangefinder and a tape front camera. When in use, a device is placed into a carrier tape using a suction pen. The carrier tape moves along the tape track and moves under the laser rangefinder. The laser rangefinder measures the distance between the device pins and the front of the device's plastic package body, compares this distance with the value of a standard product to determine whether the product has lift pins. After detection, the device is then moved along the tape track to under the tape front camera, where the tape front camera performs routine impact tests on the device, primarily inspecting the device's silkscreen, plastic package appearance, and pin dimensions, thereby effectively reducing or even eliminating the occurrence of lift pins in taped devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a partial bottom-up perspective diagram of the structure of the present invention;

[0026] Figure 3 It is a schematic diagram of a partial top view of the structure of the present invention;

[0027] Figure 4 It is a partial perspective schematic diagram of the present invention;

[0028] Figure 5 It is a schematic diagram of the suction pen structure of the present invention;

[0029] Figure 6 It is a bottom-up perspective schematic diagram of the entire present invention;

[0030] In the figure: 1. Material transport turntable; 2. Vacuum hose; 3. Suction pen; 4. Pressing mechanism; 5. Light-absorbing background plate; 6. Braiding track;

[0031] 7. Track window opening; 71. First track window opening; 72. Second track window opening; 73. Third track window opening;

[0032] 8. First bracket; 9. Second bracket; 10. Laser rangefinder; 11. Tape front camera; 12. Tape inlet camera; 13. Track vacuum pipe; 14. Carrier tape; 15. Light source; 16. Light hole; 17. Connector; 18. Support arm; 19. Spring; 20. Device; 201. Plastic package; 202. Pin. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can mean connected, set, detachably connected, set, or integrally connected or set. Those skilled in the art can understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "several" means two or more, unless otherwise specifically defined.

[0037] See also Figure 1-6 As shown, the present invention provides a technical solution:

[0038] A braided tape curling prevention and detection alarm mechanism includes a material transport turntable 1, which is rotated by a servo motor. A vacuum hose 2 is provided on one side of the material transport turntable 1, and a connector 17 is provided at the outer end of the vacuum hose 2. A suction pen 3 is provided at the bottom end of the connector, and a downward pressure mechanism 4 is provided at the top end of the connector. The downward pressure mechanism 4 is located on the material transport turntable; the connector is made of metal and has an air path in the middle to facilitate the connection between the vacuum hose and the suction pen; a vacuum pump (not shown in the figure) is provided on the material transport turntable, and the vacuum pump is used to connect the vacuum hose.

[0039] The bottom end of the suction pen 3 passes through the support arm 18 at the bottom end of the material transport turntable 1. A light-absorbing background plate 5 is provided on the suction pen 3 below the support arm. By providing the light-absorbing background plate, reflections can be eliminated.

[0040] The light-absorbing background plate is rectangular, and the cross-sectional area of ​​the light-absorbing background plate is larger than the cross-sectional area of ​​the device. The device can be completely projected onto the light-absorbing background plate in the vertical direction. The color of the light-absorbing background plate is different from that of the device, which is easy to distinguish.

[0041] When determining whether the device is deflected, the distance between the four sides of the device and the four sides of the light-absorbing background plate is detected to determine whether it exceeds the control range. If it exceeds the range, an alarm will be issued.

[0042] The suction pen 3 is provided with a spring 19, which is located between the connecting head and the support arm;

[0043] A braided track 6 is provided on one side of the material transport turntable 1, and the braided track 6 is located below the suction pen 3;

[0044] During operation, the transport turntable is activated to move the suction pen, which then picks up the component. The transport turntable is then activated again, moving the pen above the tape track. The downward pressure mechanism is activated, gradually blocking the vacuum hose and shortening the distance the component descends until it is pressed into the carrier tape. Without the downward pressure mechanism, the tape component is dropped directly. This can cause the tape component to jump within the carrier tape after it falls, shifting its position and reducing the reliability of subsequent inspections.

[0045] Three track windows 7 are provided on one side of the top of the braid track 6, a first bracket 8 and a second bracket 9 are provided on the other side of the top of the braid track 6, a laser rangefinder 10 is provided on one side of the first bracket 8, a braid front camera 11 is provided on the top of one side of the second bracket 9, and a braid inlet camera 12 is provided on one side of the bottom end of the braid track 6;

[0046] The braid track 6 is located on one side of the track window 7 and is movably provided with a plurality of carrier tapes 14. The carrier tapes 14 are used to place braid components. A light-transmitting hole 16 is opened at the bottom of the carrier tape 14. The braid feed port camera 12 is used to correspond to the light-transmitting hole 16.

[0047] The three track windows 7 are the first track window 71, the second track window 72, and the third track window 73. These three track windows correspond to different detection links. If the detection exceeds the control range, an alarm prompt is issued. The braid inlet camera 12, the laser rangefinder 10, and the braid front camera 11 are respectively connected to a controller, which is connected to an alarm to realize the alarm action.

[0048] The first track window 71 is located directly above the tape inlet camera 12 and is used to feed the material into the carrier tape 14.

[0049] The second track window 72 is located directly below the laser rangefinder 10.

[0050] The third track window 73 is located directly below the braid front camera 11 .

[0051] Preferably, a track vacuum pipe 13 is provided on the other side of the bottom end of the braiding track 6, thereby preventing the device from jumping during the movement of the carrier tape 14, and if it shakes left and right, it will affect the subsequent detection.

[0052] Preferably, a light source 15 is provided at the bottom end of the braided front camera 11, and the light source 15 is provided on one side of the second bracket 9, thereby achieving the effect of supplementary lighting for the device.

[0053] Preferably, the vacuum hose 2 is made of rubber.

[0054] Preferably, the pressing mechanism 4 is a cylinder; the pressing action is facilitated by the cylinder.

[0055] Preferably, the opening of the track window 7 is the same size as the top opening of the carrier belt 14, so that it is easy to adapt to different working conditions, such as feeding.

[0056] Preferably, several carrier belts 14 are integrated to form a whole for easy movement.

[0057] In application, the device 20 includes a plastic package 201 and pins 202 located on one side of the plastic package, such as a TO-263 package product.

[0058] When in use, the braid pin curling prevention and detection alarm mechanism of this embodiment starts the material transport turntable 1 to move the suction pen 3, starts the suction pen 3 to suck up the device 20, starts the material transport turntable 1 again, moves the suction pen 3 to the top of the braid track 6, and starts the pressing mechanism 4. The pressing mechanism 4 gradually blocks the vacuum hose 2 by pressing down, and at the same time shortens the distance the device descends until it is pressed into the carrier tape 14. The braid inlet camera 12 determines whether the device at the bottom of the suction pen 3 can be normally placed in the carrier tape 14. The device is placed in the carrier tape 14 by the suction pen 3. The carrier tape 14 moves in the braid track 6 and moves below the laser rangefinder 10. The laser rangefinder 10 measures the distance between the device pin and the front of the device plastic package body, compares the distance with the value of the standard product to determine whether the product has curled pins. After detection, the device is moved through the braid track 6 to the bottom of the braid front camera 11. The braid front camera 11 performs conventional impact detection on the device, mainly detecting the device's silk screen printing, plastic package appearance, pin size, etc.

[0059] The present invention combines prevention with three-dimensional detection and plane detection, and can accurately identify defects while reducing the occurrence of leg-lifting defects, thereby improving shipment quality.

[0060] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A braided tape warping prevention and detection alarm mechanism, comprising a material transport turntable (1), characterized in that: A vacuum hose (2) is provided on one side of the material transport turntable (1), a connector (17) is provided at the outer end of the vacuum hose (2), a suction pen (3) is provided at the bottom end of the connector, a downward pressing mechanism (4) is provided at the top end of the connector, and the downward pressing mechanism (4) is located on the material transport turntable; the suction pen (3) passes through a support arm (18) at the bottom end of the material transport turntable (1), and a light-absorbing background plate (5) is provided on the suction pen (3) below the support arm. The suction pen (3) is provided with a spring (19), and the spring is located between the connecting head and the support arm; A braided track (6) is provided on one side of the material transport turntable (1), and the braided track (6) is located below the suction pen (3); Three track windows (7) are provided on one side of the top of the braid track (6); a first bracket (8) and a second bracket (9) are provided on the other side of the top of the braid track (6); a laser rangefinder (10) is provided on one side of the first bracket (8); a braid front camera (11) is provided on the top of one side of the second bracket (9); and a braid feed port camera (12) is provided on one side of the bottom of the braid track (6); The braid track (6) is located on one side of the track window (7) and is provided with a plurality of carriers (14) movably arranged therein. The carriers (14) are used to place braid components. A light-transmitting hole (16) is provided at the bottom end of the carrier (14). The braid feed port camera (12) is used to correspond to the light-transmitting hole (16). The three track windows (7) are a first track window (71), a second track window (72) and a third track window (73). The first track window (71) is located directly above the braid inlet camera (12) and is used to feed the material into the carrier tape (14). The second track window (72) is located directly below the laser rangefinder (10). The third track window (73) is located directly below the braid front camera (11).

2. The braided tape leg lift prevention and detection alarm mechanism according to claim 1, characterized in that: A track vacuuming pipe (13) is provided on the other side of the bottom end of the braided track (6).

3. The braided tape leg lift prevention and detection alarm mechanism according to claim 1, characterized in that: A light source (15) is provided at the bottom end of the braided front camera (11), and the light source (15) is provided on one side of the second bracket (9).

4. The braided tape leg lift prevention and detection alarm mechanism according to claim 1, characterized in that: The vacuum hose (2) is made of rubber.

5. The braided tape leg lift prevention and detection alarm mechanism according to claim 3, characterized in that: The pressing mechanism (4) is a cylinder.

6. The braided tape curling prevention and detection alarm mechanism according to claim 1, characterized in that: The opening of the track window (7) is the same size as the top opening of the carrier tape (14).

7. The braided tape curling prevention and detection alarm mechanism according to claim 1, characterized in that: A plurality of carrier tapes (14) are integrally arranged.

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