An auxiliary paster for printed circuit board

Abstract

This utility model discloses an auxiliary chip placement device for printed circuit boards, including a handle, a first mounting plate, and a second mounting plate. The handle houses the first and second mounting plates, and a servo motor and a miniature air pump are respectively fixedly mounted on the bottom and top surfaces of the first and second mounting plates. Beneficial effects: This utility model features a suction nozzle, allowing the operator to hold the device and activate the miniature air pump by pressing a pump switch. Once activated, the suction nozzle's bottom opening experiences negative pressure due to the connection between the suction tube and the spindle tube, allowing it to pick up chips from smooth surfaces. A soft pad on the bottom of the base prevents chip scratches, facilitating chip movement for placement and improving the convenience of manual chip placement during low-volume circuit board processing. This reduces chip scratches and damage, increasing the yield rate.

Description

Technical Field

[0001] This utility model relates to the field of manual chip mounting technology for printed circuit boards, and more specifically, to an auxiliary chip mounting device for printed circuit boards. Background Technology

[0002] Printed circuit boards (PCBs) provide electrical connections for electronic components. Their development spans over 100 years. Their design primarily involves layout design. The main advantages of using PCBs are significantly reduced wiring and assembly errors, and improved automation and productivity.

[0003] Traditional printed circuit boards (PCBs) are mounted using large integrated pick-and-place machines, which offer high automation and efficiency. However, no matter how efficient these machines are, they cannot achieve a 100% pass rate. There will always be defective PCBs with inaccurate placement or loose mounting. These small batches of PCBs require manual remounting. Due to the small size of the chips, workers cannot easily handle them with their fingers and usually use tweezers. However, tweezers can easily scratch the chip's surface packaging structure and make it difficult to fine-tune the mounting angle, which is cumbersome and affects work efficiency and ease of use. Further improvements are needed. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an auxiliary chip placement device for printed circuit boards, which has the advantages of improving the convenience and efficiency of manual chip placement, thereby solving the problems mentioned in the background technology.

[0005] (II) Technical Solution To achieve the aforementioned advantages of improved convenience and work efficiency in manual chip placement, the specific technical solution adopted by this utility model is as follows: A printed circuit board auxiliary chip placement device includes a handle, a first mounting plate, and a second mounting plate. The first mounting plate and the second mounting plate are fixedly installed inside the handle. A servo motor and a micro air pump are respectively fixedly installed on the bottom surface of the first mounting plate and the top surface of the second mounting plate. A spindle tube is rotatably connected through the surface of the first mounting plate. An air suction pipe is connected through the air inlet end of the micro air pump. The other end of the air suction pipe is connected through the top opening of the spindle tube via a pneumatic rotary connector. A suction nozzle is connected through the bottom opening of the spindle tube. A soft pad is adhered to the bottom surface of the suction nozzle.

[0006] Furthermore, a drive gear is fixedly connected to the output end of the servo motor, and a driven gear is fixedly sleeved on the outer surface of the spindle tube, with the driven gear meshing with the drive gear.

[0007] Furthermore, the output end of the miniature air pump is connected to an exhaust pipe.

[0008] Furthermore, a storage battery is fixedly installed inside the handle.

[0009] Furthermore, a forward switch and a reverse switch are installed on the outer wall of the front face of the handle, and the output terminals of the forward switch and the reverse switch are electrically connected to the input terminal of the servo motor.

[0010] Furthermore, a pump switch is installed on the outer wall of the handle back, and the output end of the pump switch is electrically connected to the input end of the micro air pump.

[0011] Furthermore, the spindle tube is rotatably connected to the bottom of the handle and the first mounting plate via bearings.

[0012] (III) Beneficial Effects Compared with the prior art, the present invention provides an auxiliary chip mounting device for printed circuit boards, which has the following advantages: (1) This utility model is equipped with a suction nozzle. The operator can hold this device and start the micro air pump by pressing the pump switch with their finger. When the micro air pump is started, the suction tube and the main shaft tube are connected to create a negative pressure at the bottom of the suction nozzle, which can adsorb the smooth top surface of the chip to complete the picking operation. The soft pad on the bottom of the base avoids scratching the chip and makes it convenient for the operator to move the chip for placement. It helps the operator to move the chip easily, improves the convenience of manual placement when processing a small number of circuit boards, reduces chip scratches and damage, and improves the yield rate.

[0013] (2) This utility model is equipped with a servo motor and a spindle tube. The operator can control the drive motor to rotate in the forward and reverse directions by pressing the forward and reverse switches, thereby controlling the spindle tube to rotate in the forward and reverse directions, which in turn drives the nozzle and chip to rotate in the forward and reverse directions, adjusting the chip installation angle, further improving the convenience of use. The drive motor rotation speed is no more than 5r / min, which is suitable for the operator to make fine adjustments to the installation angle, further improving the installation accuracy and the convenience of use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a printed circuit board auxiliary mounting device according to an embodiment of the present utility model; Figure 2 This is a front view of a printed circuit board auxiliary mounting device according to an embodiment of the present utility model; Figure 3 This is a rear view of a printed circuit board auxiliary mounting device according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the external structure of a printed circuit board auxiliary mounting device according to an embodiment of the present utility model.

[0016] In the picture: 1. Handle; 2. First mounting plate; 3. Second mounting plate; 4. Spindle tube; 5. Servo motor; 6. Drive gear; 7. Driven gear; 8. Pneumatic rotary connector; 9. Miniature air pump; 10. Suction pipe; 11. Exhaust pipe; 12. Battery; 13. Nozzle; 14. Soft pad; 15. Forward switch; 16. Reverse switch; 17. Pump switch. Detailed Implementation

[0017] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0018] According to an embodiment of the present invention, an auxiliary mounting device for printed circuit boards is provided.

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. Please refer to them. Figure 1 and Figure 4According to an embodiment of this utility model, an auxiliary mounting device for printed circuit boards includes a handle 1, a first mounting plate 2, and a second mounting plate 3. The handle 1 is a hollow cylindrical structure made of high-strength ABS hard plastic, integrally molded using precision injection molding. It features an internal reinforcing rib structure, significantly improving structural strength while maintaining lightweight design. The outer surface of the handle 1 is treated with an anti-slip texture and covered with a layer of high-elasticity silicone friction pad. The silicone pad surface has a textured surface with a friction coefficient exceeding 0.8, effectively increasing grip comfort and stability, preventing hand fatigue and slippage even during prolonged operation. The first mounting plate 2 and the second mounting plate 3 are fixedly installed inside the handle 1, with the first mounting plate 2 located below the second mounting plate 3. Both mounting plates are made of high-strength aluminum alloy and precision milled using a CNC machining center, with surface flatness error controlled within ±0.02mm to ensure accurate installation of internal components. Furthermore, a servo motor 5 and a miniature vacuum pump 9 are fixedly mounted on the bottom surface of the first mounting plate 2 and the top surface of the second mounting plate 3, respectively. The servo motor 5 is a high-precision, low-inertia model, characterized by fast response and accurate positioning. The miniature vacuum pump 9 adopts an oil-free, silent design and can achieve a vacuum level of -80kPa. Both are mature, reliable, and readily available equipment on the market. A main spindle tube 4 is rotatably connected through the surface of the first mounting plate 2. The main spindle tube 4 is made of stainless steel and is precision-machined and ground, arranged coaxially with the handle 1 with a coaxiality error of less than 0.05mm. An air inlet pipe 10 is connected through the air inlet of the miniature vacuum pump 9. The air inlet pipe 10 is made of high-strength PVC flexible hose, possessing good flexibility and sealing performance. The other end of the air inlet pipe 10 is connected through to the top opening of the main spindle tube 4 via a pneumatic rotary connector 8. The pneumatic rotary connector 8 is a common through-rotation connection device, employing a double-bearing structure design, allowing for 360° free rotation for stable gas delivery, ensuring that the vacuum function is not affected during the rotation of the main spindle tube 4. Furthermore, a suction nozzle 13 is connected to the bottom of the spindle tube 4. The suction nozzle 13 is made of high-strength ceramic material, characterized by high hardness and strong wear resistance. A 0.3mm thick polyurethane soft pad 14 is bonded to the bottom surface. This soft pad has good elasticity and wear resistance, with a surface roughness Ra≤0.4μm. The outer diameter of the bottom opening of the suction nozzle 13 is designed to be 3mm-5mm, adaptable to most common chip sizes. The operator can hold this device and start the miniature vacuum pump 9 by pressing the pump switch 17 with their finger. After the miniature vacuum pump 9 is started, through the connection between the vacuum tube 10 and the spindle tube 4, a negative pressure state can be quickly formed at the bottom opening of the suction nozzle 13 within 1 second. The negative pressure value can reach -70kPa, which can firmly adsorb the smooth top surface of the chip to complete the pick-up operation. The soft pad 14 located on the bottom surface of the suction nozzle 13 can effectively prevent scratching the chip, making it convenient for the operator to move the chip for placement. It assists the operator in easily moving the chip, improves the convenience of manual placement when processing a small number of circuit boards, reduces chip scratches and damage, and significantly improves the yield rate.

[0020] Please refer to Figure 1 The servo motor 5 has a drive gear 6 fixedly connected to its output end. The drive gear 6 is made of high-strength alloy steel and has undergone carburizing and quenching treatment, achieving a tooth surface hardness of HRC58-62. A driven gear 7 is fixedly sleeved on the outer surface of the spindle tube 4. The driven gear 7 is also made of alloy steel and matches the module and pressure angle of the drive gear 6. The driven gear 7 meshes with the drive gear 6, forming a common gear transmission drive structure. Operators can control the forward and reverse rotation of the drive motor by pressing the forward switch 15 and the reverse switch 16. The forward and reverse switches 15 and 16 are waterproof tactile buttons, characterized by long lifespan and high reliability. The servo motor 5 is equipped with a high-precision encoder, enabling precise angle control, thereby controlling the forward and reverse rotation of the spindle tube 4, which in turn drives the nozzle 13 and the chip to rotate in the forward and reverse directions, adjusting the chip mounting angle. The drive motor rotation speed is continuously adjustable from 0 to 5 r / min, with a minimum speed resolution of 0.01 r / min, making it suitable for operators to fine-tune the installation angle. Tests have shown that the chip installation angle error can be controlled within ±0.5°, further improving the installation accuracy and ease of use.

[0021] Please refer to Figure 1 and Figure 4 The miniature air pump 9 has an exhaust pipe 11 connected to its output end. The exhaust pipe 11 is made of high-temperature and corrosion-resistant fluororubber hose, and its inner diameter has been optimized to ensure smooth exhaust. The exhaust pipe 11 extends out of the top surface of the handle 1 and is equipped with a sound-absorbing filter at the outlet, which can effectively reduce exhaust noise and prevent dust and other impurities from entering the pump body, thus extending the service life of the equipment.

[0022] Please refer to Figure 1 and Figure 4 The handle 1 houses a high-capacity lithium polymer battery 12 with a capacity of 2000mAh. It utilizes an intelligent charge / discharge management chip, providing multiple protection functions including overcharge, over-discharge, overcurrent, and short circuit protection. This battery can provide continuous and stable power to the micro air pump 9 and servo motor 5 for 4-6 hours. A dedicated Type-C charging port for the battery 12 is embedded on the top surface of the handle 1, supporting fast charging technology and allowing for a full charge in 2 hours, meeting rapid charging needs.

[0023] Please refer to Figure 1 and Figure 2 The handle 1 has a forward switch 15 and a reverse switch 16 installed on the outer wall of its front face. The switch surface is frosted for a comfortable feel. The output terminals of the forward switch 15 and the reverse switch 16 are electrically connected to the input terminal of the servo motor 5 through a high-temperature resistant and interference-resistant shielded wire, which is a common control switch form to ensure the stability and reliability of signal transmission.

[0024] Please refer to Figure 1 and Figure 3 The pump switch 17 is installed on the outer wall of the back of the handle 1. The pump switch 17 adopts a waterproof and dustproof design with a protection level of IP65. The output end of the pump switch 17 is connected to the input end of the miniature air pump 9 by a plug-in terminal, which is convenient for later maintenance and replacement. This is a common switch type.

[0025] Please refer to Figure 1 The spindle tube 4 is rotatably connected to the bottom of the handle 1 and the first mounting plate 2 by two sets of high-precision deep groove ball bearings. The bearings adopt a sealed structure, which can effectively prevent dust and impurities from entering. The radial runout error of the bearings is controlled within 0.01mm, which improves the stability of rotation and ensures that the spindle tube 4 maintains high precision and low noise operation during rotation.

[0026] Working Principle: The operator can hold the device and activate the miniature air pump 9 by pressing the pump switch 17. The miniature air pump 9 starts rapidly, and through the connection between the air extraction tube 10 and the main shaft tube 4, a negative pressure is created at the bottom of the nozzle 13 in a very short time. Utilizing the principle of negative pressure adsorption, the chip's smooth top surface can be firmly adsorbed, completing the pick-up operation. The soft pad 14 located on the bottom of the nozzle 13 effectively prevents scratching the chip, facilitating the operator to move the chip to the designated position on the printed circuit board for placement. This device greatly assists the operator in easily moving chips, significantly improving the convenience of manual placement when processing small quantities of circuit boards, reducing chip scratches and damage caused by improper manual operation, and greatly improving the yield rate. Simultaneously, the operator can control the drive motor to rotate in the forward and reverse directions by pressing the forward and reverse switches 15 and 16 according to the chip installation requirements. The drive motor, through the meshing of the drive gear 6 and driven gear 7, controls the forward and reverse rotation of the main shaft tube 4, thereby driving the nozzle 13 and the chip to rotate in the forward and reverse directions, achieving precise adjustment of the chip installation angle. The drive motor rotates at a speed not exceeding 5 r / min. This speed range is ideal for operators to fine-tune the installation angle, allowing precise control of the chip installation angle. This further improves the accuracy of installation and ease of use, providing an efficient and reliable auxiliary tool for chip placement on printed circuit boards.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A printed circuit board auxiliary taping device comprising a handle (1), a first mounting plate (2) and a second mounting plate (3), characterized in that, The handle (1) is fixedly installed with a first mounting plate (2) and a second mounting plate (3). The bottom surface of the first mounting plate (2) and the top surface of the second mounting plate (3) are respectively fixedly installed with a servo motor (5) and a micro air pump (9). The surface of the first mounting plate (2) is rotatably connected to a spindle tube (4). The air inlet end of the micro air pump (9) is connected to an air suction pipe (10). The other end of the air suction pipe (10) is connected to the top opening of the spindle tube (4) through a gas rotary connector (8). The bottom opening of the spindle tube (4) is connected to a suction nozzle (13). The bottom surface of the suction nozzle (13) is adhered with a soft pad (14).

2. An auxiliary paster device for printed circuit board according to claim 1, characterized in that, The output end of the servo motor (5) is fixedly connected to a drive gear (6), and the outer surface of the spindle tube (4) is fixedly sleeved with a driven gear (7), and the driven gear (7) meshes with the drive gear (6).

3. An auxiliary paster device for printed circuit board according to claim 1, characterized in that, The output end of the micro air pump (9) is connected to an exhaust pipe (11).

4. The printed circuit board auxiliary patch device of claim 1, wherein, A battery (12) is fixedly installed inside the handle (1).

5. The printed circuit board auxiliary patch device of claim 1, wherein, The handle (1) is equipped with a forward switch (15) and a reverse switch (16) on the outer wall of its front facade, and the output terminals of the forward switch (15) and the reverse switch (16) are electrically connected to the input terminal of the servo motor (5).

6. An auxiliary paster device for printed circuit board according to claim 1, wherein, A pump switch (17) is installed on the outer wall of the back face of the handle (1), and the output end of the pump switch (17) is electrically connected to the input end of the micro air pump (9).

7. An auxiliary paster for printed circuit board as claimed in claim 1 wherein, The main spindle tube (4) is rotatably connected to the bottom of the handle (1) and the first mounting plate (2) via bearings.

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