A material collecting device for a die bonder

Abstract

The utility model discloses a kind of material receiving devices for die bonder, belong to material receiving device technical field, including pipe body, fan set is provided in the inside of pipe body, the fan set is driven with filter screen set by transmission assembly, the filter screen set is tooth structure, it is set around in pipe body interior, and it is installed in pipe body inner wall by vibration spring, it is vibrated in pipe body interior by the continuous impact of impact group, the impact group is driven by transmission assembly, filter screen set adopts tooth structure design (tooth height 3mm, interval 5mm), compared with traditional plane filter screen, filter area is promoted, and tooth gap can accurately intercept 10 μm-5mm particulate impurities (such as silicon powder, fog, chip fragment), impact group (shaped wheel 7 and impact plate 8) is driven by transmission assembly, make tooth filter screen 9 reciprocating vibration with 12 times per second frequency.

Description

Technical Field

[0001] This utility model relates to a material receiving device, and more particularly to a material receiving device for a die bonder, belonging to the technical field of material receiving devices. Background Technology

[0002] Traditional material collection devices mostly use static flat filters or simple bag filters, which can only intercept larger particles of waste and are ineffective at filtering micron-sized impurities such as silica powder and glue mist. As filtration time increases, impurities easily accumulate on the filter surface, leading to increased airflow resistance, decreased collection efficiency, and even requiring frequent shutdowns for cleaning, severely impacting the continuity of the production line. For example, some devices experience a reduction in negative pressure airflow of more than 30% after only 2 hours of continuous operation due to filter blockage, requiring manual cleaning to restore functionality.

[0003] In existing technologies, although a few devices are equipped with a dust removal structure, most of them use independent motors to drive vibration or pneumatic blowing, which has the problems of high energy consumption and complex structure. For example, some devices use a separate motor to drive an eccentric wheel to vibrate the filter screen, which not only increases the equipment cost and energy consumption (additional power consumption ≥100W), but also has a fixed vibration frequency, which cannot match the adhesion characteristics of different impurities, resulting in limited dust removal effect and still requiring regular manual cleaning. Utility Model Content

[0004] The main purpose of this invention is to provide a receiving device for a die bonder.

[0005] The objective of this utility model can be achieved by adopting the following technical solution:

[0006] A receiving device for a die bonder includes a tube body, inside which a fan unit is installed, and the fan unit drives a filter screen group through a transmission assembly.

[0007] The filter assembly has a toothed structure and is arranged around the inside of the tube. It is installed on the inner wall of the tube by a vibration spring and is continuously struck by the impact assembly to vibrate inside the tube.

[0008] The impact assembly is driven by a transmission component.

[0009] Preferably, the fan unit includes a fan and a fan frame;

[0010] The pipe body is equipped with a fan frame, and a fan is installed on one side of the fan frame.

[0011] Preferably, a transmission assembly is installed at the output end of the fan, the transmission assembly including a gear ring frame and a gear ring;

[0012] A gear ring frame is installed at the output end of the fan, and a gear ring is fixed on the outside of the gear ring frame.

[0013] Preferably, the filter assembly includes a toothed filter and an impact plate;

[0014] A toothed filter screen is installed at the end of the vibrating spring, and an impact plate is provided on the inner wall of the toothed filter screen.

[0015] Preferably, the filter assembly includes an adjusting gear, a linkage rod, and a shaped wheel;

[0016] The support shaft is fixed to the inner wall of the tube. A linkage rod is installed through the support shaft. An adjusting gear is installed at one end of the linkage rod, and the gear ring meshes with the adjusting gear. A special-shaped wheel that cooperates with the impact plate is installed at the other end of the linkage rod.

[0017] Preferably, a filter bag is provided on the inner wall of the tube.

[0018] Preferably, a fixed flange is provided on the outer wall of the pipe body.

[0019] The beneficial technical effects of this utility model are as follows:

[0020] This utility model provides a material collection device for a die bonder. The filter screen adopts a toothed structure design (tooth height 3mm, spacing 5mm), which increases the filtration area compared to traditional flat filters. The tooth gap can accurately intercept particulate impurities of 10μm-5mm (such as silicon powder, adhesive mist, and chip fragments). The impact assembly (irregularly shaped wheel 7 and impact plate 8) is driven by a transmission component, causing the toothed filter screen 9 to reciprocate at a frequency of 12 times / second. Inertial force is used to dislodge particles attached to the filter screen surface, causing them to fall into the filter bag 1. This mechanism avoids the airflow attenuation problem caused by clogging in traditional filters, maintains stable negative pressure airflow, and ensures continuous material collection efficiency. The integrated power and energy-saving design utilizes a single power source working in tandem. The fan unit not only provides the negative pressure airflow required for material collection, but its output shaft also drives the adjusting gear through a gear ring frame and gear ring, achieving power integration for both filtration and dust removal functions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a receiving device for a die bonder according to the present invention;

[0022] Figure 2 This is a schematic diagram of the linkage rotating rod structure according to a preferred embodiment of a receiving device for a die bonder according to the present invention;

[0023] Figure 3 This is a schematic diagram of a toothed filter screen structure according to a preferred embodiment of a receiving device for a die bonder according to the present invention.

[0024] In the diagram: 1-Filter bag, 2-Pipe body, 3-Fan frame, 4-Adjusting gear, 5-Vibration spring, 6-Linkage rod, 7-Irregular wheel, 8-Impact plate, 9-Toothed filter screen, 10-Fan, 11-Gear ring, 12-Gear ring frame. Detailed Implementation

[0025] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0026] like Figures 1-3 As shown in the figure, this embodiment provides a material receiving device for a die bonder.

[0027] Main frame: Tube 2: Made of cylindrical stainless steel with smooth inner wall, with a feed port at the top and a discharge port at the bottom. A fixed flange is welded to the outer wall for docking with the discharge flange of the die bonder.

[0028] Filter bag 1: sewn into the inner wall of the tube, forming a ring around the toothed filter screen 9. It is made of anti-static nylon cloth and is used to collect the filtered fine particles.

[0029] Fan unit: Fan frame 3: It has a cross-shaped support structure and is fixed to the middle of the pipe body 2 by bolts to support the fan 10.

[0030] Fan 10: A low-noise centrifugal fan with a rated power of 200W is selected and installed on one side of the fan frame 3, with the air outlet facing the discharge end of the pipe body 2.

[0031] Transmission component: Gear ring frame 12: fixed to the end of the output shaft of the fan 10, and rotates synchronously with the shaft.

[0032] Gear ring 11: Ring gear, welded to the outside of gear ring frame 12, with 80 teeth and a module of 2.

[0033] Filter assembly: Toothed filter 9: It is circular with triangular teeth evenly distributed on the inner wall, each tooth being 3mm high and 5mm apart. It is connected to the inner wall of the tube 2 via a **vibration spring 5**, with a spring elasticity coefficient of 10N / mm and an initial compression of 10mm.

[0034] Impact plate 8: A ring-shaped metal plate, fixed to the inner wall of the toothed filter screen 9, with a thickness of 2mm and a smooth surface.

[0035] Impact assembly: Adjusting gear 4: 40 teeth, module 2, meshes with gear ring 11, and is installed at one end of linkage rod 6.

[0036] Linkage rod 6: A stainless steel shaft with a diameter of 10mm, which is fixed to the inner wall of the tube body 2 through a bearing, and a special-shaped wheel 7 is installed at the other end.

[0037] 7. Eccentric wheel structure with a long axis radius of 25mm and a short axis radius of 15mm. It periodically impacts the impact plate 8 when rotating with the linkage rod 6.

[0038] The filter bag 1 is sewn to the inner wall of the tube 2, covering the installation area of ​​the toothed filter screen 9.

[0039] Connect the tube body 2 to the die bonder outlet by bolting with a fixed flange to ensure a seal.

[0040] Adjust the meshing clearance between gear 4 and gear ring 11 to 0.5mm to ensure smooth transmission.

[0041] Test the preload of the vibration spring 5 to ensure that the toothed filter screen 9 can vibrate freely without falling off.

[0042] Working principle

[0043] Power input:

[0044] After the die bonder completes the chip bonding, the airflow or particles containing chip waste, silicon chips, and adhesive particles enter the tube 2 through the feed port. At the same time, the fan 10 starts, generating a negative pressure airflow with a wind speed of 10-15m / s, which drives the waste to move towards the discharge end.

[0045] Filtration and separation:

[0046] Larger particles, such as chip fragments and solder blocks, settle directly to the bottom of filter bag 1.

[0047] Tiny particles such as silica powder and adhesive mist pass through the toothed filter screen 9 with the airflow, are intercepted by the toothed structure, and adhere to the surface of the filter screen.

[0048] Drive chain power transmission:

[0049] The output shaft of the fan 10 drives the gear ring frame 12 and the gear ring 11 to rotate at a high speed of 1400 r / min. The gear ring 11 drives the adjusting gear 4 to rotate counterclockwise with a transmission ratio of 2:1. The speed of the adjusting gear is 700 r / min.

[0050] Impact action of irregularly shaped wheels:

[0051] The adjusting gear 4 drives the irregular wheel 7 to rotate via the linkage rod 6. When the long shaft end of the irregular wheel contacts the impact plate 8, it applies an impact force of about 5-8N to the impact plate, causing the toothed filter screen 9 to overcome the elastic force of the vibration spring 5 and move to the left. When the short shaft end of the irregular wheel rotates to the contact position, the spring returns to its original position, causing the filter screen to vibrate to the right.

[0052] Dust removal effect:

[0053] The filter vibrates back and forth at a frequency of about 12 times per second. Particles attached to the surface of the teeth fall off due to inertia and fall into filter bag 1, preventing the filter from clogging and maintaining a stable negative pressure airflow.

[0054] Cleaning cycle:

[0055] When the waste collected by filter bag 1 reaches 80% of its volume, stop the machine, disassemble pipe body 2, remove the filter bag, empty the waste, and it can be reused.

[0056] Response to Abnormal Operating Conditions:

[0057] If the fan 10 is overloaded, such as when the filter is severely clogged, the meshing clearance between the gear ring 11 and the adjusting gear 4 can allow a brief slippage to prevent the motor from burning out. At the same time, the alarm system will be triggered to prompt for dust removal.

[0058] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A receiving device for a die bonder, characterized in that: Includes a pipe body (2), inside which a fan unit is installed, and the fan unit drives a filter screen group through a transmission component; The filter screen has a toothed structure and is arranged around the inside of the tube (2). It is installed on the inner wall of the tube (2) by a vibration spring (5) and is continuously struck by the impact group to vibrate inside the tube (2). The impact assembly is driven by a transmission component.

2. The receiving device for a die bonder according to claim 1, characterized in that: The fan unit includes a fan (10) and a fan frame (3); The pipe body (2) is equipped with a fan frame (3), and a fan (10) is provided on one side of the fan frame (3).

3. A receiving device for a die bonder according to claim 1, characterized in that: A transmission assembly is installed at the output end of the fan (10), which includes a gear ring frame (12) and a gear ring (11); A gear ring frame (12) is installed at the output end of the fan (10), and a gear ring (11) is fixed on the outside of the gear ring frame (12).

4. A receiving device for a die bonder according to claim 1, characterized in that: The filter assembly includes a toothed filter (9) and an impact plate (8); A toothed filter screen (9) is installed at the end of the vibrating spring (5), and an impact plate (8) is provided on the inner wall of the toothed filter screen (9).

5. A receiving device for a die bonder according to claim 4, characterized in that: The filter assembly includes an adjusting gear (4), a linkage rod (6), and a shaped wheel (7); The support shaft is fixed to the inner wall of the tube (2). The support shaft is provided with a linkage rod (6). One end of the linkage rod (6) is equipped with an adjusting gear (4), and the gear ring (11) meshes with the adjusting gear (4). The other end of the linkage rod (6) is equipped with a shaped wheel (7) that cooperates with the impact plate (8).

6. A receiving device for a die bonder according to claim 1, characterized in that: The inner wall of the tube (2) is provided with a filter bag (1).

7. A receiving device for a die bonder according to claim 1, characterized in that: A fixed flange is provided on the outer wall of the pipe body (2).

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