Frame separation paper mixed suction device used on die bonder

Abstract

The utility model relates to the field of semiconductor packaging, in particular to a frame partition paper mixed suction device used on a die bonder, which comprises a vacuum chuck assembly and a base, vacuum generators are mounted on the left side and the right side of the base, a support plate is fixed on the back of the base, an optical fiber amplifier is mounted on the support plate, and the vacuum chuck assembly comprises a first adjusting support plate. The first adjusting supporting plate is installed at the front end of the base through a self-weight balance floating assembly, the condensing lens is installed at the bottom of the first adjusting supporting plate, the first suction cup module and the second suction cup module are installed on the left side and the right side of the first adjusting supporting plate respectively, and the second suction cup module and the first suction cup module are connected to the corresponding vacuum generators through air paths respectively. The two sets of suction cup modules are arranged, a clamped object is detected through the condensing lens, and then the corresponding suction cup modules are started to suck a frame or partition paper so as to be suitable for different suction occasions.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor packaging, in particular to a frame spacer paper mixing and suction device used on a crystal bonding machine. Background Art

[0002] A die bonder, also known as a die loading machine, wafer pasting machine or chip bonding machine, is a key device in the semiconductor back-end packaging process. It is an automated production equipment that uses vision-guided technology to automatically pick up chips from the wafer and bond (a wire bonding method in the chip production process) them to the lead frame.

[0003] During the chip placement process, the frame must be loaded first, and then the chip is placed on the glued frame. In practice, the frames are separated by paper to protect the surface cleanliness. During loading, the paper must be manually removed, and the component is then sucked into the frame to complete the loading process. This process not only easily introduces foreign contaminants but also reduces overall production efficiency. Summary of the Invention

[0004] The purpose of the utility model is to provide a frame and spacer mixed suction device used in a crystal bonding machine. The device can suck the frame and spacer according to different usage conditions, so as to be suitable for automatic suction under different conditions.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a frame spacer paper mixed suction device used on a crystal bonding machine, comprising a vacuum suction cup assembly and a base, vacuum generators are installed on the left and right sides of the base, a support plate is fixed on the back of the base, and an optical fiber amplifier is installed on the support plate, the vacuum suction cup assembly comprises an adjustment support plate 1, the adjustment support plate 1 is slidably installed on the front end of the base through a deadweight balancing floating assembly, a focusing lens is installed at the bottom of the adjustment support plate 1, and the focusing lens is connected to the optical fiber amplifier through a detection optical fiber, a suction cup module 1 for sucking spacer paper and a suction cup module 2 for sucking the frame are installed on the left and right sides of the adjustment support plate 1, and the suction cup module 2 and the suction cup module 1 are respectively connected to the corresponding vacuum generators through air paths.

[0006] Preferably, the self-weight balancing floating assembly includes a lifting L-plate and an adjustment seat, the focusing lens and the adjustment support plate are fixed to the lifting L-plate, the lifting L-plate is slidably installed on the front end of the base, the top of the lifting L-plate is fixed with a limit seat, the adjustment seat is provided with two groups and is disposed on both sides of the lifting L-plate, the adjustment seat is fixed to the front end of the base, the top of the adjustment seat is fixed with a guide shaft passing through the limit seat, the guide shaft is outer sleeved with a spring, the spring is in contact between the limit seat and the shoulder of the guide shaft, and the shoulder is located between the adjustment seat and the limit seat.

[0007] Preferably, a guide seat is fixed above the front end of the base, an anti-collision detection rod passing through the guide seat is fixed on the back of the lifting L-plate, an adjustable back plate is installed on the back of the base, and a photoelectric switch adapted to the anti-collision detection rod is fixed on the front end of the back plate.

[0008] Preferably, a mounting groove is provided at the front end of the base, a linear guide rail is fixed in the mounting groove, a slide is provided on the linear guide rail, and the lifting L-plate is fixed to the slide.

[0009] Preferably, a screw hole communicating with the mounting slot is provided at the bottom of the base, and a limiting pin with an end portion contacting the sliding seat is connected in the screw hole.

[0010] Preferably, a groove is provided on the back of the lifting L-plate, and an oblong hole four is provided in the groove to connect to the front end of the lifting L-plate. A tailstock is provided at the bottom of the anti-collision detection rod, and the tailstock is fixed in the groove by a bolt passing through the oblong hole four.

[0011] Preferably, the suction cup module 1 and the suction cup module 2 both include an adjustment support plate 2, the adjustment support plate 2 is adjustably mounted on the adjustment support plate 1, a plurality of adjustable fixing seats are mounted on the adjustment support plate 2, and suction cups are mounted on the fixing seats.

[0012] After adopting the above technical solution, the beneficial effects of the utility model are:

[0013] This utility model features two sets of suction cup modules. A focusing lens detects the object to be clamped, then activates the corresponding suction cup module to pick up the frame or paper separator, adapting to different suction applications. A self-weighted, balanced floating assembly uses a spring to cushion the suction process, preventing hard impact during the descent. An anti-collision detection rod triggers a photoelectric switch to prevent collisions caused by continued ascent under abnormal circumstances. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is the installation diagram of the deadweight balancing floating assembly;

[0017] Figure 3 It is a structural diagram of the deadweight balancing floating assembly;

[0018] Figure 4 Schematic diagram of the structure of the vacuum suction cup assembly.

[0019] Figure markings: 1-paper separator; 2-frame; 3-vacuum suction cup assembly, 31-adjusting support plate one, 311-oblong hole one, 32-adjusting support plate two, 321-oblong hole two, 33-fixing seat, 331-threaded hole, 34-locking cap, 35-vacuum suction cup; 4-base, 41-back plate, 411-oblong hole three, 412-photoelectric switch, 42-linear guide rail, 421-slide seat, 43-adjusting hole, 44-limiting pin; 5-self-weight balancing floating assembly, 51-lifting L plate, 511-groove, 512-oblong hole four, 52-adjusting seat, 53-spring, 54-limiting seat, 55-guide shaft, 551-shaft shoulder, 56-guide seat, 57-anti-collision detection rod, 571-tail stock; 6-fiber amplifier; 7-support plate; 8-vacuum generator; 9-focusing lens, 91-detection fiber. DETAILED DESCRIPTION

[0020] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present invention by illustrating examples of the present invention.

[0021] The directional terms used in the following description refer to the directions shown in the drawings and do not limit the specific structure of this utility model. It should also be noted that, in the description of this utility model, unless otherwise specified or limited, the terms "installation" and "connection" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0022] As attached Figure 1-4 As shown, an embodiment of the present invention provides a frame-spacer paper mixing suction device used on a crystal bonding machine, including a vacuum suction cup assembly 3 and a base 4, and the vacuum suction cup assembly 3 is installed on the base 4 through a self-weight balancing floating assembly 5.

[0023] The self-weight balancing floating assembly 5 includes a lifting L-plate 51 and an adjustment seat 52. The vacuum suction cup assembly 3 is mounted to the lifting L-plate 51. The front end of the base 4 is provided with a mounting slot, in which a linear guide 42 is fixedly mounted. A slide 421 is provided on the linear guide 42, and the lifting L-plate 51 is fixed to the slide 421. The slide 421 serves as a connecting component between the lifting L-plate 52 and the linear guide 42, allowing the vacuum suction cup assembly 3 on the lifting L-plate 52 to perform precise linear movement under the guidance of the linear guide 42.

[0024] The bottom of the base 4 is provided with a screw hole connected to the mounting slot, and a stop pin 44 is connected to the base 4 through the screw hole at the bottom of the base 4. By changing the screwing depth of the stop pin 44, when the slide 421 moves to the preset position, the stop pin 44 will come into contact with it, thereby preventing the slide 421 from moving further, ensuring that the vacuum cup assembly 3 does not exceed the safe range during movement.

[0025] The adjustment seat 52 is provided with two groups and is disposed on both sides of the lifting L-plate 51. A limit seat 54 is fixed to the top of the lifting L-plate 51, and a guide shaft 55 passing through the limit seat 54 is fixed to the top of the adjustment seat 52. The guide shaft 55 is covered with a spring 53, and the spring 53 abuts between the limit seat 54 and the shoulder 551 of the guide shaft 55. The shoulder 551 is located between the adjustment seat 52 and the limit seat 54. The adjustment seat 52 is fixed to the front end of the base 4, and the front end of the base 4 is provided with multiple groups of adjustment holes 43 for installing the adjustment seat 52. By changing the installation position of the adjustment seat 52 in the adjustment hole 43, the initial height of the adjustment seat 52 can be adjusted, thereby changing the initial height of the lifting L-plate 51. A through hole is provided on the adjustment seat 52, and an adjustment hole connected to the through hole is provided on one side of the adjustment seat 52. The guide shaft 55 is inserted into the through hole, and a top screw is provided in the adjustment hole. When the top screw is screwed into the adjustment hole and abuts against the guide shaft 55 , the axial position of the shaft shoulder 551 can be precisely controlled, thereby fine-tuning the initial height of the lifting L-plate 51 .

[0026] When the vacuum suction cup assembly 3 is combined with the lifting L-plate 51, their combined weight causes the entire system to begin moving downward along the linear guide rail 42. As the lifting L-plate 51 moves downward, the spring 53 mounted on the guide shaft 55 begins to compress. When the spring 53 is compressed to a certain degree, the elastic force it generates gradually increases to equal the combined weight of the lifting L-plate 51 and the vacuum suction cup assembly 3. The system then stops moving and reaches a floating equilibrium state, allowing the vacuum suction cup assembly 3 to contact the suction object with relatively little force.

[0027] When the driving device (not shown) drives the base 4 to move downward for suction, once the vacuum suction cup assembly 3 touches the suction piece, the balance state is broken, and the reaction force of the spring 53 offsets the impact force of the vacuum suction cup assembly 3 touching the suction piece, avoiding damage to the object caused by hard impact.

[0028] A guide seat 56 is fixed above the front end of the base 4, and an anti-collision detection rod 57 passing through the guide seat 56 is fixed to the back of the lifting L-plate 51. A groove 511 is provided on the back of the lifting L-plate 51, and a four-long circular hole 512 connected to the front end of the lifting L-plate 51 is provided in the groove 511. A tailstock 571 is provided at the bottom of the anti-collision detection rod 57, and the tailstock 571 is fixed in the groove 511 by a bolt passing through the four-long circular hole 512, thereby changing the extension length of the anti-collision detection rod 57. The anti-collision detection rod 57 is adapted to be equipped with a photoelectric switch 412, and the photoelectric switch 412 is installed at the front end of the back plate 41. Two long circular holes 411 are provided on the back plate 41, and bolts pass through the long circular holes 411 to install the back plate 41 on the back of the base 4.

[0029] If an abnormality occurs after the vacuum suction cup assembly 3 contacts the suction element, as the drive unit continues to move downward, the vacuum suction cup assembly 3 is blocked, causing the lifting L-plate 51 to drive the anti-collision detection rod 57 upward. The photoelectric switch 412 then moves downward along with the base 4. When the two meet (the anti-collision detection rod 57 passes through the sensing area of ​​the photoelectric switch 412), the light-emitting switch 412 triggers a shutdown signal, shutting down the drive unit and preventing further contact and possible damage. Due to the relative motion between the photoelectric switch 412 and the anti-collision detection rod 57, the trigger condition is quickly met. This design significantly reduces the time from the occurrence of an abnormality to the issuance of the shutdown signal, improving the system's response speed and safety.

[0030] The vacuum suction cup assembly 3 includes an adjustment plate 31 and a suction cup 35. Adjustment plate 31 is mounted on the bottom of the lifting L-plate 51. Suction cup module 1 for sucking the separator paper 1 and suction cup module 2 for sucking the frame 2 are mounted on both sides of adjustment plate 31. Suction cup modules 2 and 1 are symmetrically arranged on either side. Both suction cup modules 1 and 2 include adjustment plate 2 32. Adjustment plate 31 has oblong holes 311 on either side, through which bolts pass to secure adjustment plate 2 32 to adjustment plate 31.

[0031] Multiple sets of suction cups 35 are provided, each mounted on a fixing base 33. The fixing base 33 is provided with a threaded hole 331, to which a locking cap 34 is attached. The second adjustment support plate 32 is provided with a second oblong hole 321, through which the locking cap 34 passes to secure the fixing base 33 to the second adjustment support plate 32. Each second adjustment support plate 32 is mounted with at least two sets of fixing bases 33, that is, at least two sets of suction cups 35.

[0032] The design of the first oblong hole 311 allows for fine-tuning of the second adjustment support plate 32 within a certain range, thereby enabling adjustment of the suction cup 35 in the X direction. The design of the second oblong hole 321 allows for fine-tuning of the fixing base 33 within a certain range, thereby enabling adjustment of the suction cup 35 in the Y direction. Through fine-tuning in the X and Y directions, the position of the suction cup 35 in the workspace can be precisely adjusted to accommodate suction objects of different sizes, shapes, and positions.

[0033] A vacuum generator 8 is mounted on each side of the base 4. Suction cup module 2 and suction cup module 1 are connected to their respective vacuum generators 8 via air circuits. A support plate 7 is fixed to the back of the base 4, on which a fiber optic amplifier 6 is mounted. A focusing lens 9 is mounted on the bottom of the adjustment support plate 1 31 and is connected to the fiber optic amplifier 6 via a detection optical fiber 91.

[0034] Suction cup module 1, suction cup module 2, and two vacuum generators 8 form two vacuum systems. A focusing lens 9 focuses light from a detection fiber optic 91 onto the surface of the suction object. The optical signal collected by a fiber optic amplifier 6 determines whether the current suction object is paper separator 1 or frame 2. If the suction object is paper separator 1, the vacuum generator 8 connected to suction cup module 1 is activated; if the suction object is frame 2, the vacuum generator 8 connected to suction cup module 2 is activated. The two vacuum systems operate independently without interfering with each other, easily adapting to different suction objects and improving production efficiency.

[0035] While the embodiments described above are based on the present invention, these embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Clearly, many modifications and variations are possible based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better utilize the present invention and its modifications and uses. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A frame separator paper mixing and suction device used in a die bonder, characterized by: It comprises a vacuum suction cup assembly (3) and a base (4), wherein vacuum generators (8) are installed on both sides of the base (4), a support plate (7) is fixed on the back of the base (4), and an optical fiber amplifier (6) is installed on the support plate (7), the vacuum suction cup assembly (3) comprises an adjustment support plate (31), the adjustment support plate (31) is slidably installed on the front end of the base (4) through a self-weight balancing floating assembly (5), a focusing lens (9) is installed at the bottom of the adjustment support plate (31), and the focusing lens (9) is connected to the optical fiber amplifier (6) through a detection optical fiber (91), and a suction cup module (1) for sucking the spacer paper (1) and a suction cup module (2) for sucking the frame (2) are installed on both sides of the adjustment support plate (31), and the suction cup module (2) and the suction cup module (1) are respectively connected to the corresponding vacuum generator (8) through an air path.

2. The frame-separator paper mixing and suction device according to claim 1, characterized in that: The self-weight balancing floating assembly (5) includes a lifting L-plate (51) and an adjustment seat (52), the focusing lens (9) and the adjustment support plate (31) are fixed to the lifting L-plate (51), the lifting L-plate (51) is slidably mounted on the front end of the base (4), the top of the lifting L-plate (51) is fixed with a limit seat (54), the adjustment seat (52) is provided with two groups and is respectively arranged on both sides of the lifting L-plate (51), the adjustment seat (52) is fixed to the front end of the base (4), the top of the adjustment seat (52) is fixed with a guide shaft (55) passing through the limit seat (54), the guide shaft (55) is covered with a spring (53), the spring (53) is in contact between the limit seat (54) and the guide shaft (55) shoulder (551), and the shoulder (551) is located between the adjustment seat (52) and the limit seat (54).

3. The frame-separator paper mixing and suction device according to claim 2, characterized in that: A guide seat (56) is fixed above the front end of the base (4), an anti-collision detection rod (57) passing through the guide seat (56) is fixed to the back of the lifting L-plate (51), an adjustable back plate (41) is installed on the back of the base (4), and a photoelectric switch (412) adapted to the anti-collision detection rod (57) is fixed to the front end of the back plate (41).

4. The frame-separator paper mixing and suction device according to claim 2, characterized in that: The front end of the base (4) is provided with a mounting groove, a linear guide rail (42) is fixed in the mounting groove, a slide seat (421) is provided on the linear guide rail (42), and the lifting L-plate (51) is fixed to the slide seat (421).

5. The frame-separator paper mixing and suction device according to claim 4, characterized in that: A screw hole communicating with the mounting slot is provided at the bottom of the base (4), and a limiting pin (44) whose end contacts the sliding seat (421) is connected to the screw hole.

6. The frame-separator paper mixing and suction device according to claim 3, characterized in that: The back of the lifting L-plate (51) is provided with a groove (511), and a fourth oblong hole (512) communicating with the front end of the lifting L-plate (51) is provided in the groove (511). The bottom of the anti-collision detection rod (57) is provided with a tailstock (571), and the tailstock (571) is fixed in the groove (511) by a bolt passing through the fourth oblong hole (512).

7. The frame-separator paper mixing and suction device according to claim 1, characterized in that: The suction cup module 1 and the suction cup module 2 both include an adjustment support plate 2 (32), the adjustment support plate 2 (32) and the adjustment support plate 1 (31) are adjustably mounted, a plurality of adjustable fixing seats (33) are mounted on the adjustment support plate 2 (32), and a suction cup (35) is mounted on the fixing seat (33).

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