A pressure claw mechanism of a wire bonding machine and a method of using the same

Abstract

The present invention discloses a pressing claw mechanism of a wire bonding machine and a use method thereof, which relate to the field of semiconductor processing technology, and include a workbench, wherein a support base 1 is fixedly installed on the top surface of the workbench, a support base 2 is fixedly installed on the top surface of the workbench located on the left side of the support base 1, a same pressing claw base is fixedly installed on the top surfaces of the support base 1 and the support base 2, a lead frame is arranged on the top surface of the workbench located between the support base 1 and the support base 2, and a welding head is arranged above the lead frame. In the invention, the correct position and posture of the lead frame during the welding process are ensured through precise adjustment of the pressing claw and stable fixation, thereby improving the welding accuracy and consistency and reducing welding defects, and by providing a control mechanism, the heat, harmful gases and impurities generated during the welding process can be effectively absorbed, the welding area can be kept clean and safe, and a better working environment is provided for the operator.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor processing, and in particular to a pressing claw mechanism of a wire bonding machine and a use method thereof. Background Art

[0002] In the prior art, the fixation and welding of lead frames is a key step in the production process of electronic components. In the existing wire bonding machine technology, a clamping claw mechanism is usually used to fix the lead frame to ensure precise alignment and stability during the welding process. However, the traditional clamping claw mechanism design has some significant limitations.

[0003] Existing mechanisms cannot flexibly determine the position before installation. They are all designed according to the target lead frame, with a small scope of application and poor versatility. They cannot match different lead frames one-to-many. Accessories are complicated to replace and need to be completely removed for maintenance and replacement. The tightness cannot be adjusted and it is easy to be damaged and has poor reliability. In addition, during the wire bonding process, the welding area will experience rapid temperature changes, thereby generating thermal stress, resulting in uneven stress distribution in the welding area, thereby affecting the uniformity and consistency of the weld. The reduction in welding quality will lead to unstable electrical connections, increased resistance, and even cause faults such as open circuits or short circuits. Cracks inside the welding area and reduced welding quality will directly affect the reliability of the components. Cracks can The thermal stress will expand, causing more serious damage to the components during subsequent use. At the same time, the instability of welding quality will also increase the risk of failure of the components during use. Under temperature cycling conditions, thermal stress will repeatedly act on the welding area, resulting in the gradual attenuation of the bonding strength, especially in the field of high-reliability packaging. For example, when gold wire or silicon aluminum wire is used to bond the Al pad lead of the chip to the gold-plated inner pin of the tube shell, the interface effect and the formation of intermetallic compounds will further aggravate the influence of thermal stress, resulting in a rapid decrease in bonding strength. Rapid temperature changes will also accelerate the aging process of the materials in the welding area. For example, gold wire may grow grains and reduce grain boundary energy at high temperatures, thereby reducing its strength and toughness.

[0004] Therefore, based on the above search and in combination with the prior art, a pressing claw mechanism and a method of use of a wire bonding machine are proposed to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a pressure claw mechanism of a wire bonding machine and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A pressing claw mechanism of a wire bonding machine and a method for using the same include: a workbench, a support base 1 is fixedly installed on the top surface of the workbench, a support base 2 is fixedly installed on the top surface of the workbench located on the left side of the support base 1, a same pressing claw base is fixedly installed on the top surfaces of the support base 1 and the support base 2, a lead frame is arranged between the support base 1 and the support base 2 on the top surface of the workbench, a welding head is arranged above the lead frame; a pressing mechanism, the pressing mechanism is arranged on the pressing claw base and is used to fix the lead frame, the pressing mechanism includes: a left oblique pressing claw base, the left oblique pressing claw base is arranged on the top surface of the pressing claw base, a left middle pressing claw base is arranged on one side of the left oblique pressing claw base, A right middle pressure claw base is provided on one side of the left middle pressure claw base, a right oblique pressure claw base is provided on one side of the right middle pressure claw base, a right oblique pressure claw 1 is provided on the right oblique pressure claw base, a right middle pressure claw 1 is provided on the right middle pressure claw base, a left middle pressure claw 1 is provided on the left middle pressure claw base, a left oblique pressure claw 1 is provided on the left oblique pressure claw base, a left lower pressure claw base is provided on the right side of the top surface of the pressing claw base, a right lower pressure claw base is provided on one side of the left lower pressure claw base, a left lower pressure claw 1 is provided on the left lower pressure claw base, and a right lower pressure claw 1 is provided on the right lower pressure claw base; a control mechanism and a detection mechanism are provided on a support seat 1, and are used to monitor and control the thermal stress generated during welding.

[0008] Preferably, the control mechanism includes: a temperature controller, which is fixedly mounted on the right side wall of the support seat one, a collection box is fixedly mounted on the left side wall inside the support seat two, a plurality of ventilation holes are opened on the left side wall of the collection box, a circulation box is fixedly mounted inside the support seat two, an L-shaped plate is slidably connected to the inside of the circulation box, a blocking net is fixedly mounted on the top surface of the L-shaped plate, and the control mechanism also includes a filter assembly and a ventilation assembly.

[0009] Preferably, the filter assembly includes: an activated carbon plate, the activated carbon plate is arranged on an L-shaped plate, a ceramic fiber board is arranged on one side of the activated carbon plate, a HEPA filter is arranged on one side of the ceramic fiber board, a composite filter plate is arranged on one side of the HEPA filter, and a chemical adsorption plate is arranged on one side of the composite filter plate.

[0010] Preferably, the ventilation assembly includes: a circulation pipe, which is arranged inside the support seat 2, one end of the circulation pipe is connected to the interior of the collection box, and the other end is connected to the interior of the circulation box; a suction pipe is arranged inside the support seat 2, one end of the suction pipe is connected to the interior of the circulation box, and the other end passes through the side wall of the support seat 2 and extends to the outside of the support seat 2; a suction fan is fixedly installed on the front side wall of the support seat 2.

[0011] Preferably, the left oblique pressure claw base and the left oblique pressure claw one are fixedly installed by screws, the left middle pressure claw base and the left middle pressure claw one are fixedly installed by screws, the right middle pressure claw base and the right middle pressure claw one are fixedly installed by screws, the right oblique pressure claw base and the right oblique pressure claw one are fixedly installed by screws, the left lower pressure claw base and the left lower pressure claw one are fixedly installed by screws, and the right lower pressure claw base and the right lower pressure claw one are fixedly installed by screws, and the left oblique pressure claw base, the left middle pressure claw base, the right middle pressure claw base, the right oblique pressure claw base, the left lower pressure claw base and the right lower pressure claw base are movably installed with fixing bolts between the left oblique pressure claw base, the left middle pressure claw base, the right middle pressure claw base, the right oblique pressure claw base, the left lower pressure claw base and the right lower pressure claw base and the workbench, and the installation gap is large, so the left oblique pressure claw base, the left middle pressure claw base, the right middle pressure claw base, the right oblique pressure claw base, the left lower pressure claw base and the right lower pressure claw base can be flexibly moved to the target position and then the fixing bolts are locked to determine the positioning point of the pressure claw head.

[0012] Preferably, the top surface of the L-shaped plate is provided with five slots, and the bottom surfaces of the five slots are fixedly installed with multiple circular magnets. The bottom surfaces of the activated carbon plate, ceramic fiber board, HEPA filter, composite filter plate and chemical adsorption plate are all made of iron material, and the activated carbon plate, ceramic fiber board, HEPA filter, composite filter plate and chemical adsorption plate are respectively slidably installed in the five slots.

[0013] Preferably, a rectangular magnet is fixedly mounted on the left side of the top surface of the L-shaped plate, the interior of the circulation box is made of iron material, and the rectangular magnet is adsorbed on the inner wall of the circulation box.

[0014] A method for using a pressing claw mechanism of a wire bonding machine comprises the following steps:

[0015] S1: Place the workbench in a stable position, ensure that support base 1 and support base 2 are firmly installed on the top surface of the workbench, fix the pressing claw base on the top surface of support base 1 and support base 2, ensure that the installation is firm, place the lead frame on the top surface of the workbench, between support base 1 and support base 2, check whether all screws and fixing bolts are tightened, and ensure that the mechanism is stable;

[0016] S2: According to the size and fixing points of the lead frame, loosen the fixing bolts, flexibly move the left oblique pressure claw base, the left middle pressure claw base, the right middle pressure claw base, the right oblique pressure claw base, the left lower pressure claw base and the right lower pressure claw base to the target position, adjust the right oblique pressure claw 1, the right middle pressure claw 1, the left middle pressure claw 1, the left oblique pressure claw 1, the left lower pressure claw 1 and the right lower pressure claw 1 to align and gently press the key points of the lead frame, and use the fixing bolts to lock and fix the left oblique pressure claw base, the left middle pressure claw base, the right middle pressure claw base, the right oblique pressure claw base, the left lower pressure claw base and the right lower pressure claw base;

[0017] S3: Fix the temperature controller on the right side wall of the support seat 1 and ensure that it works normally. Check whether the collection box, circulation box, L-shaped plate and blocking net are installed in place. Slide the activated carbon plate, ceramic fiber plate, HEPA filter, composite filter plate and chemical adsorption plate into the slots on the L-shaped plate respectively, fix them with round magnets, ensure that the rectangular magnets are adsorbed on the inner wall of the circulation box, fix the L-shaped plate, start the suction fan, and set the monitoring parameters of the temperature controller so that the power of the suction fan can be automatically adjusted when the temperature is about to generate thermal stress;

[0018] S4: When the welding head is welding the lead frame, the temperature controller will monitor the temperature of the welding area in real time. When it is detected that the temperature is about to generate thermal stress, the temperature controller will automatically adjust the power of the suction fan to the maximum to absorb the heat, harmful gases and impurities generated during the welding process. The heat and harmful gases enter the flow box through the collection box, and after being filtered by the blocking net, activated carbon board, ceramic fiber board, HEPA filter, composite filter board and chemical adsorption board, they are discharged to the outside through the suction pipe;

[0019] S5: Regularly check and clean the impurities on the collection box, circulation box and blocking net. When you need to replace the activated carbon plate, ceramic fiber board, HEPA filter, composite filter plate or chemical adsorption plate, just take it out from the corresponding card slot and replace it with a new filter plate. After cleaning or maintenance, reinstall and start the equipment according to the above steps.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, by providing a pressing mechanism, effective adaptation to lead frames of different sizes and specifications is achieved. The mechanism can accurately adjust the position of the pressing claws to ensure stable fixation of the lead frame during the wire bonding process, thereby improving the welding quality. In addition, due to its adjustability and modular design, maintenance and replacement of accessories become simple, greatly improving the versatility and reliability of the equipment. This design not only reduces production delays caused by equipment mismatch, but also reduces the cost caused by frequent replacement of accessories;

[0022] 2. In the present invention, a control mechanism is provided to monitor the thermal stress in the welding area in real time and automatically adjust the power of the suction fan, so as to effectively absorb and discharge the heat, harmful gases and impurities generated in the welding process. This not only ensures the cleanliness and safety of the welding environment, but also helps to maintain the temperature stability of the welding area, thereby reducing the negative impact of thermal stress on the uniformity and consistency of the weld. Through this intelligent control, the welding quality is improved, and the risk of potential faults such as unstable electrical connections, increased resistance, open circuits or short circuits is reduced. Especially in the field of high-reliability packaging, such as using gold wire or silicon aluminum wire for chip Al pad lead bonding, it can effectively extend the service life and stability of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the left structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure on the right side of the present invention;

[0025] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the split structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the overall structure of the control mechanism of the present invention;

[0028] Figure 6 This is a schematic diagram of the internal structure of the support base of the present invention;

[0029] Figure 7 It is a schematic diagram of the internal structure of the circulation box of the present invention;

[0030] Figure 8 It is a schematic diagram of the disassembly structure of the circulation box and the L-shaped plate of the present invention;

[0031] Fig. 9 It is a schematic diagram of the separation structure of the filter assembly and the L-shaped plate of the present invention.

[0032] In the figure: 1, workbench; 2, support base 1; 3, support base 2; 4, pressing claw base; 5, left oblique pressing claw base; 6, left middle pressing claw base; 7, right middle pressing claw base; 8, right oblique pressing claw base; 9, right oblique pressing claw 1; 10, right middle pressing claw 1; 11, left middle pressing claw 1; 12, left oblique pressing claw 1; 13, left lower pressing claw base; 14, right lower pressing claw base; 15, left lower pressing claw 1; 16, right lower pressing claw 1; 17, lead frame ; 18. Welding head; 19. Fixing bolt; 20. Temperature controller; 21. Collecting box; 22. Ventilation port; 23. Circulation box; 24. L-shaped plate; 25. Barrier net; 26. Activated carbon plate; 27. Ceramic fiber board; 28. HEPA filter; 29. ​​Composite filter plate; 30. Chemical adsorption plate; 31. Rectangular magnet; 32. Circulation pipe; 33. Suction pipe; 34. Suction fan; 35. Card slot; 36. Round magnet. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0034] In a typical implementation of this application, please refer to Figures 1 to 9 As shown, a pressing claw mechanism of a wire bonding machine and a method of using the same include: a workbench 1, a support base 2 is fixedly installed on the top surface of the workbench 1, a support base 2 3 is fixedly installed on the top surface of the workbench 1 located on the left side of the support base 1 2, a same pressing claw base 4 is fixedly installed on the top surfaces of the support base 1 2 and the support base 2 3, a lead frame 17 is arranged on the top surface of the workbench 1 between the support base 1 2 and the support base 2 3, and a welding head 18 is arranged above the lead frame 17;

[0035] The existing pressure claws are custom-made according to the specific size of the lead frame. They can be adjusted in size and have special characteristics. They are customized to meet the needs of products of different specifications. The pressure claws are mainly composed of a pressure claw head, a pressure claw seat, and a pressure claw base. The key points of the lead frame 17 are pressed by the gripping head of the pressure claw, and the quality of welding is ensured through reliable pressing.

[0036] The above process is the basic process of the claw pressing the lead frame 17 at present.

[0037] However, the existing mechanism cannot flexibly determine the position before installation. It is designed according to the target lead frame 17, has a small scope of application, poor versatility, cannot match different lead frames 17 one-to-many, and the replacement of accessories is complicated and needs to be completely removed for maintenance and replacement. The tightness cannot be adjusted, and it is easy to be damaged and has poor reliability.

[0038] In addition, during the wire bonding process, the welding area will experience rapid temperature changes, which will generate thermal stress and lead to uneven stress distribution in the welding area, thus affecting the uniformity and consistency of the weld. The reduction in welding quality will lead to unstable electrical connections, increased resistance, and even cause faults such as open circuits or short circuits. Cracks inside the welding area and reduced welding quality will directly affect the reliability of the component. The cracks may expand, causing more serious damage to the component during subsequent use. At the same time, the instability of welding quality will also increase the risk of component failure during use. Under temperature cycling conditions, thermal stress will repeatedly act on the welding area, resulting in a gradual attenuation of the bonding strength, especially in the field of high-reliability packaging. For example, when gold wire or silicon aluminum wire is used to bond the chip Al pad wire to the gold-plated inner pin of the tube shell, the interface effect and the formation of intermetallic compounds will further aggravate the impact of thermal stress, resulting in a rapid decrease in bonding strength. Rapid temperature changes will also accelerate the aging process of the material in the welding area. For example, gold wire may experience grain growth and reduced grain boundary energy at high temperatures, thereby reducing its strength and toughness.

[0039] Therefore, based on the above problems, we first design a pressing mechanism, which is arranged on the pressing claw base 4 and is used to fix the lead frame 17. The pressing mechanism includes:

[0040] A left oblique pressure claw base 5 is arranged on the top surface of the pressing claw base 4, a left middle pressure claw base 6 is arranged on one side of the left oblique pressure claw base 5, a right middle pressure claw base 7 is arranged on one side of the left middle pressure claw base 6, a right oblique pressure claw base 8 is arranged on one side of the right middle pressure claw base 7, a right oblique pressure claw 9 is arranged on the right oblique pressure claw base 8, a right middle pressure claw 10 is arranged on the right middle pressure claw base 7, a left middle pressure claw 11 is arranged on the left middle pressure claw base 6, a left oblique pressure claw 12 is arranged on the left oblique pressure claw base 5, a left lower pressure claw base 13 is arranged on the right side of the top surface of the pressing claw base 4, a right lower pressure claw base 14 is arranged on one side of the left lower pressure claw base 13, a left lower pressure claw 15 is arranged on the left lower pressure claw base 13, and a right lower pressure claw 16 is arranged on the right lower pressure claw base 14, the left oblique pressure claw base 5 and the left oblique pressure claw 12 are fixed and installed by screws, and the left middle pressure claw The base 6 is fixedly installed with screws to the left middle pressure claw 11, the right middle pressure claw base 7 is fixedly installed with screws to the right middle pressure claw 10, the right oblique pressure claw base 8 is fixedly installed with screws to the right oblique pressure claw 9, the left lower pressure claw base 13 is fixedly installed with screws to the left lower pressure claw 15, the right lower pressure claw base 14 is fixedly installed with screws to the right lower pressure claw 16, and the left oblique pressure claw base 5, the left middle pressure claw base 6, the right middle pressure claw base 7, the right oblique pressure claw base 8, the left lower pressure claw base 13 and the right lower pressure claw base 14 are movably installed with fixing bolts 19 between the workbench 1, and the installation gap is large, and the left oblique pressure claw base 5, the left middle pressure claw base 6, the right middle pressure claw base 7, the right oblique pressure claw base 8, the left lower pressure claw base 13 and the right lower pressure claw base 14 can be flexibly moved to the target position and then the fixing bolts 19 are locked to determine the positioning point of the pressure claw head;

[0041] Through the above-mentioned features, the pressure claw head presses the lead frame 17. Specifically, when encountering different lead frames 17, it is only necessary to remove the fixing bolts 19 and then adjust the left oblique pressure claw base 5, the left middle pressure claw base 6, the right middle pressure claw base 7, the right oblique pressure claw base 8, the left lower pressure claw base 13 and the right lower pressure claw base 14 to appropriate positions, so that the left oblique pressure claw base 5, the left middle pressure claw base 6, the right middle pressure claw base 7, the right oblique pressure claw base 8, the left lower pressure claw base 13 and the right lower pressure claw base 14 are aligned with the right oblique pressure claw on the left oblique pressure claw base 5, the left middle pressure claw base 6, the right middle pressure claw base 7, the right oblique pressure claw base 8, the left lower pressure claw base 13 and the right lower pressure claw base 14. 9. The right middle pressure claw 10, the left middle pressure claw 11, the left oblique pressure claw 12, the left lower pressure claw 15 and the right lower pressure claw 16 press the lead frame 17, and then the left oblique pressure claw base 5, the left middle pressure claw base 6, the right middle pressure claw base 7, the right oblique pressure claw base 8, the left lower pressure claw base 13 and the right lower pressure claw base 14 are locked by the fixing bolt 19 to complete the operation, so that it can be adjusted according to the size and fixing point of the impression frame, and can also be flexibly matched with different types of lead frames 17.

[0042] At the same time, based on the previous problems, we have also designed a control mechanism. The detection mechanism is arranged on the support seat 2 and is used to monitor and control the thermal stress generated during welding. The control mechanism includes: a temperature controller 20. The temperature controller 20 is fixedly installed on the right side wall of the support seat 2. A collection box 21 is fixedly installed on the left side wall inside the support seat 3. A plurality of ventilation holes 22 are provided on the left side wall of the collection box 21. A circulation box 23 is fixedly installed inside the support seat 3. The circulation box 23 is slidably connected to the inside with an L-shaped plate 24. A blocking net 25 is fixedly installed on the top surface of the L-shaped plate 24. The control mechanism also includes a filtering component and a ventilation component.

[0043] As a preferred implementation in this embodiment, please refer to Figure 7 to Figure 9 As shown, the filter assembly includes: an activated carbon plate 26, the activated carbon plate 26 is arranged on an L-shaped plate 24, a ceramic fiber plate 27 is arranged on one side of the activated carbon plate 26, a HEPA filter 28 is arranged on one side of the ceramic fiber plate 27, a composite filter plate 29 is arranged on one side of the HEPA filter 28, and a chemical adsorption plate 30 is arranged on one side of the composite filter plate 29.

[0044] As a preferred implementation in this embodiment, please refer to Figure 6 As shown, the ventilation assembly includes: a circulation pipe 32, which is arranged inside the support seat 23, one end of the circulation pipe 32 is connected to the interior of the collection box 21, and the other end is connected to the interior of the circulation box 23, and a suction pipe 33 is arranged inside the support seat 23, one end of the suction pipe 33 is connected to the interior of the circulation box 23, and the other end passes through the side wall of the support seat 23 and extends to the outside of the support seat 23, and a suction fan 34 is fixedly installed on the front side wall of the support seat 23.

[0045] As a preferred implementation in this embodiment, please refer to Fig. 9 As shown, five slots 35 are provided on the top surface of the L-shaped plate 24, and a plurality of circular magnets 36 are fixedly installed on the bottom surfaces of the five slots 35. The bottom surfaces of the activated carbon plate 26, the ceramic fiber plate 27, the HEPA filter 28, the composite filter plate 29 and the chemical adsorption plate 30 are all made of iron material. The activated carbon plate 26, the ceramic fiber plate 27, the HEPA filter 28, the composite filter plate 29 and the chemical adsorption plate 30 are slidably installed in the five slots 35 respectively.

[0046] As a preferred implementation in this embodiment, please refer to Figure 7 to Figure 9 As shown, a rectangular magnet 31 is fixedly installed on the left side of the top surface of the L-shaped plate 24 , and the interior of the circulation box 23 is made of iron material. The rectangular magnet 31 is adsorbed on the inner wall of the circulation box 23 .

[0047] Through the above steps, the thermal stress generated during welding can be absorbed. Specifically, during the welding process, the temperature controller 20 will monitor the temperature around the lead frame 17. When the temperature is about to generate thermal stress, the temperature controller 20 will control the power of the suction fan 34 to turn on the suction fan 34 to the maximum power, so that the heat, harmful gases and impurities around the lead frame 17 are sucked into the collection box 21, and then flow into the circulation box 23 through the circulation pipe 32. At this time, the impurities are blocked by the blocking net 25, and the heat and the impurities are The harmful gas will be filtered through the activated carbon plate 26, the ceramic fiber plate 27, the HEPA filter 28, the composite filter plate 29 and the chemical adsorption plate 30 in sequence, and then discharged to the outside through the suction pipe 33. When the inside of the circulation box 23 needs to be cleaned, it is only necessary to pull out the L-shaped plate 24 from the right side of the support seat 23. If the activated carbon plate 26, the ceramic fiber plate 27, the HEPA filter 28, the composite filter plate 29 and the chemical adsorption plate 30 need to be replaced, it is only necessary to take them out from the corresponding card slot 35.

[0048] It is worth mentioning that the temperature controller 20 monitors the ambient temperature in real time through built-in or external temperature sensing elements such as thermistors, thermocouples, etc. These elements can generate corresponding electrical signals as the ambient temperature changes. The sensed temperature signals will be transmitted to the IC integrated circuit controller of the temperature controller 20 to set the threshold: Inside the IC controller of the temperature controller 20, a series of temperature thresholds are usually preset to determine whether the current ambient temperature reaches the conditions for adjusting the speed or start and stop of the suction fan 34. The IC controller will compare the received temperature signal with the preset threshold to determine whether the operating state of the suction fan 34 needs to be adjusted. If the current ambient temperature is in the condition where the suction fan needs to be adjusted, 34 speed range, the IC controller will output a corresponding control signal to the suction fan 34 driver, and change the speed of the suction fan 34 by adjusting the output voltage or current of the driver. For example, when the ambient temperature is high, the controller will increase the speed of the suction fan 34 to increase the heat dissipation effect; conversely, when the ambient temperature is low, the speed of the suction fan 34 will be reduced to save energy. In some cases, the temperature controller 20 can also directly control the start and stop of the suction fan 34. When the ambient temperature exceeds the preset safety range, such as too high or too low, the controller will issue a command to stop or start the suction fan 34 to protect the equipment or avoid unnecessary energy consumption. This is an existing mature technical means and is therefore not described in detail in the present invention.

[0049] Working principle:

[0050] When in use, the workbench 1 is placed in a stable position, ensuring that the support base 1 2 and the support base 2 3 are firmly installed on the top surface of the workbench 1, and the pressing claw base 4 is fixed on the top surfaces of the support base 1 2 and the support base 2 3 to ensure a firm installation. The lead frame 17 is placed on the top surface of the workbench 1, between the support base 1 2 and the support base 2 3. By checking whether all screws and fixing bolts 19 are tightened, ensure that the entire mechanism is stable. According to the size and fixing points of the lead frame 17, the operator loosens the fixing bolts 19 and flexibly moves the left oblique pressing claw base 5, the left middle pressing claw base 6, the right middle pressing claw base 7, the right oblique pressing claw base 8, the left lower pressing claw base 13 and the right lower pressing claw base 14 to the closed position. The right target position is then adjusted, and the right oblique pressure claw 9, the right middle pressure claw 10, the left middle pressure claw 11, the left oblique pressure claw 12, the left lower pressure claw 15 and the right lower pressure claw 16 are aligned and gently pressed on the key fixing points of the lead frame 17. The bases of each pressure claw are locked and fixed with fixing bolts 19 to ensure that the lead frame 17 is stable during the welding process. The temperature controller 20 is fixedly installed on the right side wall of the support seat 2 and ensures that it works normally. Check whether the collection box 21, the circulation box 23, the L-shaped plate 24 and the blocking net 25 are installed in place. The activated carbon plate 26, the ceramic fiber board 27, the HEPA filter 28, the composite filter plate 29 and the chemical adsorption plate The materials 30 are respectively slidably mounted in the slots 35 on the L-shaped plate 24 and fixed by the circular magnets 36. After ensuring that the rectangular magnets 31 are adsorbed on the inner wall of the circulation box 23, the L-shaped plate 24 is fixed and the suction fan 34 is started. The monitoring parameters of the temperature controller 20 are set so that the power of the suction fan 34 is automatically adjusted when the temperature is about to generate thermal stress. When the welding head 18 welds the lead frame 17, the temperature controller 20 monitors the temperature of the welding area in real time. When it is detected that the temperature is about to generate thermal stress, the temperature controller 20 automatically adjusts the power of the suction fan 34 to the maximum to absorb the heat, harmful gases and impurities generated during the welding process. These heat and harmful gases The body enters the circulation box 23 through the collection box 21, and is filtered by the blocking net 25, the activated carbon board 26, the ceramic fiber board 27, the HEPA filter 28, the composite filter plate 29 and the chemical adsorption plate 30, and then discharged to the outside through the suction pipe 33. Regularly check and clean the impurities on the collection box 21, the circulation box 23 and the blocking net 25. When it is necessary to replace the activated carbon board 26, the ceramic fiber board 27, the HEPA filter 28, the composite filter plate 29 or the chemical adsorption plate 30, just take it out from the corresponding card slot 35 and replace it with a new filter plate. After cleaning or maintenance is completed, reinstall and start the equipment according to the above steps to ensure continuous and efficient operation.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A claw mechanism for a wire bonding machine, characterized in that: include: A workbench (1), wherein a support seat 1 (2) is fixedly mounted on the top surface of the workbench (1), a support seat 2 (3) is fixedly mounted on the top surface of the workbench (1) located on the left side of the support seat 1 (2), a same pressing claw base (4) is fixedly mounted on the top surfaces of the support seat 1 (2) and the support seat 2 (3), a lead frame (17) is arranged on the top surface of the workbench (1) located between the support seat 1 (2) and the support seat 2 (3), and a welding head (18) is arranged above the lead frame (17); A pressing mechanism, the pressing mechanism is arranged on the pressing claw base (4) and is used to fix the lead frame (17), the pressing mechanism comprising: A left oblique pressure claw base (5), wherein the left oblique pressure claw base (5) is arranged on the top surface of the pressing claw base (4), a left middle pressure claw base (6) is arranged on one side of the left oblique pressure claw base (5), a right middle pressure claw base (7) is arranged on one side of the left middle pressure claw base (6), a right oblique pressure claw base (8) is arranged on one side of the right middle pressure claw base (7), a right oblique pressure claw 1 (9) is arranged on the right oblique pressure claw base (8), and a right middle pressure claw 1 (10) is arranged on the right middle pressure claw base (7). 0), a left middle pressure claw 1 (11) is arranged on the left middle pressure claw base (6), a left oblique pressure claw 1 (12) is arranged on the left oblique pressure claw base (5), a left lower pressure claw base (13) is arranged on the right side of the top surface of the pressing claw base (4), a right lower pressure claw base (14) is arranged on one side of the left lower pressure claw base (13), a left lower pressure claw 1 (15) is arranged on the left lower pressure claw base (13), and a right lower pressure claw 1 (16) is arranged on the right lower pressure claw base (14); The control mechanism and the detection mechanism are arranged on the support seat one (2) and are used to monitor and control the thermal stress generated during welding. The control mechanism comprises: a temperature controller (20), the temperature controller (20) is fixedly mounted on the right side wall of the support seat one (2), a collection box (21) is fixedly mounted on the left side wall inside the support seat two (3), a plurality of ventilation holes (22) are provided on the left side wall of the collection box (21), a circulation box (23) is fixedly mounted inside the support seat two (3), an L-shaped plate (24) is slidably connected inside the circulation box (23), a blocking net (25) is fixedly mounted on the top surface of the L-shaped plate (24), and the control mechanism also comprises a filtering component and a ventilation component; The filter assembly comprises: an activated carbon plate (26), the activated carbon plate (26) being arranged on an L-shaped plate (24), a ceramic fiber plate (27) being arranged on one side of the activated carbon plate (26), a HEPA filter (28) being arranged on one side of the ceramic fiber plate (27), a composite filter plate (29) being arranged on one side of the HEPA filter (28), and a chemical adsorption plate (30) being arranged on one side of the composite filter plate (29); The ventilation assembly comprises: a circulation pipe (32), the circulation pipe (32) being arranged inside the second support seat (3), one end of the circulation pipe (32) being connected to the inside of the collection box (21), and the other end being connected to the inside of the circulation box (23), an air suction pipe (33) being arranged inside the second support seat (3), one end of the air suction pipe (33) being connected to the inside of the circulation box (23), and the other end penetrating through the side wall of the second support seat (3) and extending to the outside of the second support seat (3), and a suction fan (34) being fixedly mounted on the front side wall of the second support seat (3).

2. The pressing claw mechanism of a wire bonding machine according to claim 1, characterized in that: The left oblique pressure claw base (5) and the left oblique pressure claw one (12) are fixedly installed by screws, the left middle pressure claw base (6) and the left middle pressure claw one (11) are fixedly installed by screws, the right middle pressure claw base (7) and the right middle pressure claw one (10) are fixedly installed by screws, the right oblique pressure claw base (8) and the right oblique pressure claw one (9) are fixedly installed by screws, the left lower pressure claw base (13) and the left lower pressure claw one (15) are fixedly installed by screws, and the right lower pressure claw base (14) and the right lower pressure claw one (16) are fixedly installed by screws. The left oblique pressure claw base (5), the left middle pressure claw base (6), the right middle pressure claw base (7), the right oblique pressure claw base (8), the left lower pressure claw base (13) and the right lower pressure claw base (14) are movably installed with fixing bolts (19) between the workbench (1). The installation gap is large, and the left oblique pressure claw base (5), the left middle pressure claw base (6), the right middle pressure claw base (7), the right oblique pressure claw base (8), the left lower pressure claw base (13) and the right lower pressure claw base (14) can be flexibly moved to the target position and then the fixing bolts (19) are tightened to determine the positioning point of the pressure claw head.

3. The pressing claw mechanism of a wire bonding machine according to claim 1, characterized in that: The top surface of the L-shaped plate (24) is provided with five slots (35), and the bottom surfaces of the five slots (35) are fixedly mounted with a plurality of circular magnets (36). The bottom surfaces of the activated carbon plate (26), the ceramic fiber plate (27), the HEPA filter (28), the composite filter plate (29), and the chemical adsorption plate (30) are all made of iron material. The activated carbon plate (26), the ceramic fiber plate (27), the HEPA filter (28), the composite filter plate (29), and the chemical adsorption plate (30) are respectively slidably mounted in the five slots (35).

4. The pressing claw mechanism of a wire bonding machine according to claim 1, characterized in that: A rectangular magnet (31) is fixedly mounted on the left side of the top surface of the L-shaped plate (24); the interior of the circulation box (23) is made of iron material; and the rectangular magnet (31) is adsorbed on the inner wall of the circulation box (23).

5. A method for using a pressure claw mechanism of a wire bonding machine, applied to a pressure claw mechanism of a wire bonding machine according to any one of claims 1 to 4, characterized in that: The steps include: S1: Place the workbench (1) in a stable position, ensure that the support base 1 (2) and the support base 2 (3) are firmly installed on the top surface of the workbench (1), fix the pressing claw base (4) on the top surface of the support base 1 (2) and the support base 2 (3), ensure that the installation is firm, place the lead frame (17) on the top surface of the workbench (1), between the support base 1 (2) and the support base 2 (3), check whether all screws and fixing bolts (19) are tightened, and ensure that the mechanism is stable; S2: According to the size and fixing point of the lead frame (17), loosen the fixing bolt (19), flexibly move the left oblique pressure claw base (5), the left middle pressure claw base (6), the right middle pressure claw base (7), the right oblique pressure claw base (8), the left lower pressure claw base (13) and the right lower pressure claw base (14) to the target position, adjust the right oblique pressure claw 1 (9), the right middle pressure claw 1 (10), the left middle pressure claw 1 (11), the left oblique pressure claw 1 (12), the left lower pressure claw 1 (15) and the right lower pressure claw 1 (16) so that they are aligned and lightly pressed on the key point of the lead frame (17), and use the fixing bolt (19) to lock and fix the left oblique pressure claw base (5), the left middle pressure claw base (6), the right middle pressure claw base (7), the right oblique pressure claw base (8), the left lower pressure claw base (13) and the right lower pressure claw base (14); S3: The temperature controller (20) is fixedly mounted on the right side wall of the support seat (2) and ensures that it is working properly. Check whether the collection box (21), the circulation box (23), the L-shaped plate (24) and the blocking net (25) are installed in place. The activated carbon plate (26), the ceramic fiber plate (27), the HEPA filter (28), the composite filter plate (29) and the chemical adsorption plate (30) are respectively slidably mounted in the slots (35) on the L-shaped plate (24), and fixed with a circular magnet (36). Ensure that the rectangular magnet (31) is adsorbed on the inner wall of the circulation box (23), fix the L-shaped plate (24), start the suction fan (34), and set the monitoring parameters of the temperature controller (20) so as to automatically adjust the power of the suction fan (34) when the temperature is about to generate thermal stress; S4: When the welding head (18) welds the lead frame (17), the temperature controller (20) monitors the temperature of the welding area in real time. When it is detected that the temperature is about to generate thermal stress, the temperature controller (20) automatically adjusts the power of the suction fan (34) to the maximum to absorb the heat, harmful gases and impurities generated during the welding process. The heat and harmful gases enter the circulation box (23) through the collection box (21), and are filtered by the blocking net (25), the activated carbon plate (26), the ceramic fiber board (27), the HEPA filter (28), the composite filter plate (29) and the chemical adsorption plate (30), and are discharged to the outside through the suction pipe (33); S5: Regularly check and clean the impurities on the collection box (21), the circulation box (23) and the blocking net (25). When it is necessary to replace the activated carbon plate (26), the ceramic fiber plate (27), the HEPA filter (28), the composite filter plate (29) or the chemical adsorption plate (30), just remove it from the corresponding card slot (35) and replace it with a new filter plate. After cleaning or maintenance is completed, reinstall and start the equipment according to the above steps.

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