Wiping device for solid crystal dispensing head

Abstract

The utility model relates to the technical field of die bonders, and particularly discloses a die bonding dispensing head wiping device, which comprises a driving mechanism and a wiping mechanism assembled at the front end of the driving mechanism, the driving mechanism comprises a supporting frame, a stepping motor is fixedly installed on the inner wall of the supporting frame, a supporting block is installed on an output shaft of the stepping motor, and a position sensor is fixedly installed on the top of the supporting frame. The wiping mechanism comprises a base fixedly installed at the front end of the supporting frame, an elastic reed is fixedly installed at the top of the base, a wiping block is fixedly installed on the inner wall of the elastic reed, and wiping cotton is bonded to the inner wall of the wiping block; according to the automatic wiping device, the dispensing head can be conveniently wiped by simulating a human hand by controlling opening and closing of the elastic reed, manual wiping can be changed into automatic wiping, time and labor wasted by manpower are saved, and more convenience is brought to production work of a production line.

Description

Technical Field

[0001] This utility model belongs to the field of die bonding machine technology, specifically relating to a die bonding dispensing head wiping device. Background Technology

[0002] Dispensing technology is an indispensable part of modern electronic manufacturing and precision mechanical assembly. It precisely applies liquid or semi-solid adhesives to designated locations to achieve multiple functions such as sealing, fixing, protection, and conductivity. In semiconductor packaging processes, die bonding is a key step in LED packaging, chip packaging, and other processes, directly affecting the performance and reliability of the final product. As the core component of the die bonder, the die bonding dispensing head is responsible for precisely applying adhesives to the PCB board or substrate and fixing the wafer on it. With the continuous advancement of semiconductor technology, the size of wafers is constantly shrinking, and the precision requirements for die bonding are becoming increasingly higher. The cleanliness and maintenance of the die bonding dispensing head have become particularly important.

[0003] However, existing die-bonding dispensing heads are uncontrollable due to human error during operation, making it impossible to wipe the dispensing head on time. This causes abnormalities and uncontrollable situations on the production line, resulting in a decline in die-bonding quality and causing many problems for production. Therefore, the applicant proposes a die-bonding dispensing head wiping device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a die-bonding dispensing head wiping device, which can simulate the principle of human hand wiping of the dispensing head by rebounding through a spring. With the help of a stepper motor to control the opening and closing, it can realize the function of quickly wiping the dispensing head without the need for manual wiping, saving time and manpower wasted by manual labor, and bringing more convenience to the production line.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The die bonding dispensing head wiping device includes:

[0007] A drive mechanism and a wiping mechanism assembled at the front end of the drive mechanism;

[0008] The drive mechanism includes a support frame, a stepper motor is fixedly installed on the inner wall of the support frame, a support block is installed on the output shaft of the stepper motor, and a position sensor is fixedly installed on the top of the support frame.

[0009] The wiping mechanism includes a base fixedly installed at the front end of the support frame, a spring sheet fixedly installed on the top of the base, a wiping block fixedly installed on the inner wall of the spring sheet, and wiping cotton adhered to the inner wall of the wiping block.

[0010] Preferably, rollers are rotatably mounted on both sides of the support block, and the stepper motor is fixedly mounted to the support frame via a fixing bracket.

[0011] Preferably, a mounting bracket for supporting the position sensor is fixedly installed on the top of the support frame, and the mounting bracket and the position sensor are fixedly installed together by a fixing sleeve.

[0012] Preferably, mounting bases are fixedly installed on both sides of the support frame, and the mounting bases are provided with fixing holes.

[0013] Preferably, a limiting groove is formed at the top of the base, and the bottom of the elastic spring extends into the limiting groove.

[0014] Preferably, the wiping cotton is made of high-density sponge material, and the position sensor corresponds to the center position between the wiping cotton.

[0015] Preferably, the inner wall of the wiping block is provided with an installation groove, and the wiping cotton is bonded to the installation groove by an adhesive layer.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) This utility model is equipped with a wiping mechanism and a driving mechanism that cooperate with each other. The opening and closing of the elastic spring can be controlled by the rotation of the support block, so that the wiping block can drive the wiping cotton to adhere to the dispensing head. The dispensing head can be moved by the die bonder, and the dispensing head can be wiped quickly. It can conveniently simulate the wiping of the dispensing head by hand, and realize the transformation from manual wiping to automatic wiping, saving the time and manpower wasted by manual labor. It can save the production line time reminders and manual supervision, and can convert the downtime wasted by wiping the dispensing head into production capacity, effectively improving output and bringing more convenience to the production line.

[0018] (2) The present invention has rollers on both sides of the support block, which can make the support block rotate to a horizontal state to open the elastic spring. The rolling action of the rollers can reduce the friction on the elastic spring, avoid the wear caused by the long-term opening of the elastic spring, and effectively reduce the replacement cycle of the elastic spring. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the second embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the drive mechanism structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the wiping mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the elastic spring structure of this utility model;

[0024] In the diagram: 1. Wiping mechanism; 11. Spring; 12. Base; 13. Limiting groove; 14. Wiping block; 15. Wiping cotton; 16. Adhesive layer; 17. Mounting groove; 2. Drive mechanism; 21. Support frame; 22. Fixing frame; 23. Stepper motor; 24. Support block; 25. Roller; 26. Mounting seat; 27. Fixing hole; 28. Mounting frame; 29. ​​Fixing sleeve; 210. Position sensor. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1:

[0029] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the die bonding dispensing head wiping device includes:

[0030] Drive mechanism 2 and wiping mechanism 1 assembled at the front end of drive mechanism 2;

[0031] The drive mechanism 2 includes a support frame 21, a stepper motor 23 is fixedly installed on the inner wall of the support frame 21, a support block 24 is installed on the output shaft of the stepper motor 23, and a position sensor 210 is fixedly installed on the top of the support frame 21.

[0032] The wiping mechanism 1 includes a base 12 fixedly installed at the front end of the support frame 21. A spring 11 is fixedly installed on the top of the base 12. A wiping block 14 is fixedly installed on the inner wall of the spring 11. A wiping cotton 15 is adhered to the inner wall of the wiping block 14.

[0033] As can be seen from the above, by installing this device in a suitable position on the die bonder during use, the software built into the die bonder can be used to control the wiping position and height of the dispensing head. When the die bonder wipes according to the specified time by controlling the time through the software, the dispensing head moves between the wiping cotton 15. The position sensor 210 can sense the position of the dispensing head and trigger the stepper motor 23 to start. The stepper motor 23 drives the support block 24 to rotate 90°, so that the support block 24 is in a vertical state. This allows the support block 24 to release the support effect on the elastic spring 11. The elastic force of the elastic spring 11 can cause the elastic spring 11 to close. The wiping block 14 can drive the wiping cotton 15 to clamp the dispensing head. By controlling the dispensing head to lift through the software of the die bonder, the wiping cotton 15 can complete the wiping action of the dispensing head.

[0034] After wiping, the dispensing head is moved away from the wiping mechanism 1. The position sensor 210 can detect the dispensing head moving away, triggering the stepper motor 23 to rotate the support block 24 90° to reset it, so that the support block 24 can be in a horizontal state. This allows the elastic spring 11 to be opened, so that the wiping position is in an open state, making it convenient for the next wiping operation of the dispensing head. It can easily simulate the wiping of the dispensing head by hand, realizing the transformation from manual wiping to automatic wiping, saving the time and manpower wasted by manual labor, saving the production line time reminders and manual supervision, and converting the downtime wasted on wiping the dispensing head into production capacity, effectively improving output and bringing more convenience to the production line.

[0035] Depend on Figure 3 It can be seen that rollers 25 are rotatably installed on both sides of the support block 24, and the stepper motor 23 is fixedly installed with the support frame 21 through the fixing frame 22.

[0036] As can be seen from the above, when the support block 24 is rotated to a horizontal state to open the elastic spring 11, the rolling action of the roller 25 can be used to smoothly open the elastic spring 11, while reducing the friction on the surface of the elastic spring 11, avoiding wear caused by the long-term opening of the elastic spring 11, and effectively reducing the replacement cycle of the elastic spring 11.

[0037] For details, please refer to Figure 3 As shown, a mounting bracket 28 for supporting the position sensor 210 is fixedly installed on the top of the support frame 21, and the mounting bracket 28 and the position sensor 210 are fixedly installed together by a fixing sleeve 29.

[0038] As can be seen from the above, the mounting bracket 28 can easily support the position sensor 210, so that the position sensor 210 can easily sense the center position between the wiping cotton 15. By inserting the position sensor 210 into the fixing sleeve 29, the position sensor 210 can be easily fixed, and the position sensor 210 can also be easily disassembled, so that the position sensor 210 can be easily disassembled and maintained when it malfunctions.

[0039] For details, please refer to Figure 3 As shown, mounting bases 26 are fixedly installed on both sides of the support frame 21, and mounting bases 26 have fixing holes 27.

[0040] As can be seen from the above, by using bolts and fixing holes 27, the mounting base 26 can be easily fixed on the die bonder, and the support frame 21 can be easily fixed in a suitable position, so that the device can easily wipe the dispensing head.

[0041] Example 2:

[0042] refer to Figure 4 and Figure 5 As shown, a limiting groove 13 is provided on the top of the base 12, and the bottom of the elastic spring 11 extends into the limiting groove 13.

[0043] As can be seen from the above, by inserting the elastic spring 11 into the limiting groove 13, the elastic spring 11 can be conveniently limited by the limiting groove 13, making the elastic spring 11 less prone to shaking and displacement. The elastic spring 11 and the limiting groove 13 are fixed by bolts, which can facilitate the installation and disassembly of the elastic spring 11. When the elastic spring 11 is damaged, it can be replaced, which brings more convenience to the user.

[0044] refer to Figure 1 and Figure 4 As shown, the wiping cotton 15 is made of high-density sponge material, and the position sensor 210 corresponds to the center position between the wiping cotton 15.

[0045] As can be seen from the above, when the dispensing head moves to the center position between the wiping cotton 15, it can block the position sensor 210, allowing the position sensor 210 to quickly detect the dispensing head. The wiping cotton 15, made of high-density sponge material, has good water absorption and cleaning ability, which can effectively remove adhesive residue and impurities from the dispensing head, ensuring that the dispensing head is clean and free of stains. At the same time, the high-density sponge is soft and will not damage the dispensing head, ensuring that the dispensing head remains intact.

[0046] refer to Figure 5 As shown, the inner wall of the wiping block 14 is provided with an installation groove 17, and the wiping cotton 15 is bonded to the installation groove 17 by an adhesive layer 16.

[0047] As can be seen from the above, the adhesive layer 16 allows the wiping cotton 15 to be easily attached to the mounting groove 17. The mounting groove 17 can limit the position of the wiping cotton 15, ensuring that the wiping cotton 15 is attached to the correct position and that the wiping cotton 15 is not misaligned during installation. This ensures the wiping effect on the dispensing head and also facilitates the replacement of the wiping cotton 15, thus improving the overall performance.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A die-bonding dispensing head wiping device, characterized in that, include: The driving mechanism (2) and the wiping mechanism (1) assembled at the front end of the driving mechanism (2); The drive mechanism (2) includes a support frame (21), a stepper motor (23) is fixedly installed on the inner wall of the support frame (21), a support block (24) is installed on the output shaft of the stepper motor (23), and a position sensor (210) is fixedly installed on the top of the support frame (21). The wiping mechanism (1) includes a base (12) fixedly installed at the front end of the support frame (21). A spring sheet (11) is fixedly installed on the top of the base (12). A wiping block (14) is fixedly installed on the inner wall of the spring sheet (11). A wiping cotton (15) is adhered to the inner wall of the wiping block (14).

2. The die-bonding dispensing head wiping device according to claim 1, characterized in that: Rollers (25) are rotatably mounted on both sides of the support block (24), and the stepper motor (23) is fixedly mounted to the support frame (21) through a fixing frame (22).

3. The die-bonding dispensing head wiping device according to claim 1, characterized in that: The top of the support frame (21) is fixedly mounted with a mounting bracket (28) for supporting the position sensor (210), and the mounting bracket (28) and the position sensor (210) are fixedly mounted together by a fixing sleeve (29).

4. The die-bonding dispensing head wiping device according to claim 1, characterized in that: Mounting seats (26) are fixedly installed on both sides of the support frame (21), and fixing holes (27) are provided on the mounting seats (26).

5. The die-bonding dispensing head wiping device according to claim 1, characterized in that: The base (12) has a limiting groove (13) at its top, and the bottom of the elastic spring (11) extends into the limiting groove (13).

6. The die-bonding dispensing head wiping device according to claim 1, characterized in that: The wiping cotton (15) is made of high-density sponge material, and the position sensor (210) corresponds to the center position between the wiping cotton (15).

7. The die-bonding dispensing head wiping device according to claim 1, characterized in that: The inner wall of the wiping block (14) is provided with an installation groove (17), and the wiping cotton (15) is bonded to the installation groove (17) by an adhesive layer (16).

Images