A material taking device for gas phase welding

Abstract

This utility model relates to the field of vapor phase welding technology, and in particular to a material handling device for vapor phase welding, including a material storage frame, a material discharge assembly, and an ejection assembly. The material discharge assembly includes an upper mounting plate, a lower mounting plate, an air blower, and a rolling shaft. The upper and lower mounting plates are both mounted on the material storage frame, and the upper mounting plate is fixedly mounted on the top surface of the lower mounting plate. The air blower and the rolling shaft are both mounted on the upper and lower mounting plates. A drive channel for the PCB board to pass through is provided between the air blowers and the rolling shaft on both sides. A conveyor belt is provided in the drive channel. Feeding rollers are distributed on the opposite side of the air blowers. Air blowing holes are distributed near the feeding rollers on the air blowers. An air inlet pipe is provided on the side of the air blower near the mounting plate. When the PCB board is moved out of the material storage frame by the conveyor belt, the air blowers on the upper and lower sides of the PCB board can effectively clean the upper and lower sides of the PCB board by blowing air, eliminating the need for personnel to perform cleaning operations with handheld cleaning equipment.

Description

Technical Field

[0001] This utility model relates to the field of vapor phase welding technology, and in particular to a material handling device for vapor phase welding. Background Technology

[0002] Vapor phase soldering (VPS), also known as condensation soldering, is a process that uses the latent heat of condensation of saturated vapor to heat electronic components and complete the soldering. Its core lies in using a special heat transfer fluid (usually a perfluoropolyether inert liquid) heated to above its boiling point in a heating bath, forming a highly uniform and stable saturated vapor zone. When a circuit board (PCB) pre-coated with solder paste and with components attached is placed into this vapor zone, the low-temperature workpiece surface immediately causes vapor condensation. This phase change process releases a large amount of latent heat, rapidly and uniformly heating the entire PCB to the boiling point of the vapor, causing the solder paste to melt and reflow simultaneously, forming high-quality solder joints.

[0003] In existing PCB reflow soldering processes, the circuit boards are transported to the workers via a conveyor rail. The workers then manually remove the circuit boards one by one from the rack and use an air gun to blow away dust and other debris to clean them before placing them in the equipment. This method of material handling is not only cumbersome but also increases the workload of the workers. Therefore, this invention proposes a material handling device for PCB reflow soldering to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is achieved through the following method: a material handling device for vapor phase welding, comprising a storage frame for storing PCB boards, a material dispensing component, and an ejection component. The material dispensing component is disposed on one side of the lower end of the storage frame, and the ejection component is disposed on the side of the lower end of the storage frame away from the material dispensing component. The material dispensing component includes an upper mounting plate, a lower mounting plate, an air blower, and a rolling shaft. The upper mounting plate and the lower mounting plate are mirror-symmetrically disposed on both sides of the lower end of the storage frame, and the upper mounting plate is fixedly disposed on the top surface of the lower mounting plate. The air blower and the rolling shaft are staggered and disposed facing each other on the upper mounting plate and the lower mounting plate. On one side, the air blower and roller on the upper mounting plate are installed facing the lower mounting plate, and the air blower and roller on the lower mounting plate are installed facing the upper mounting plate. A drive channel for the PCB board to pass through is left between the air blowers and rollers on both sides. A conveyor belt is installed in the drive channel. Feeding rollers are distributed on the side of the air blowers facing each other. The feeding rollers are flush with the rollers. Air blowing holes are distributed on the side of the air blower near the feeding rollers. An air inlet pipe is provided on the side of the air blower near the mounting plate. The air inlet pipe passes through the mounting plate and extends away from the storage frame.

[0005] In a further embodiment of the above description, the bottom surface of the storage box is provided with a support platform. One end of the support platform extends toward the storage box. The end of the conveyor belt away from the storage box is connected to the top surface of the support platform away from the storage box via a support base. The end of the conveyor belt near the storage box extends toward the inside of the storage box. The lower end of the storage box near the conveyor belt is provided with a clearance groove that matches the conveyor belt. A drive motor is installed at the lower end of the storage box near the clearance groove. The drive motor is synchronously driven by the conveyor belt through a linkage belt. The drive motor drives the conveyor belt to rotate through the linkage belt. When the ejected PCB board comes into contact with the conveyor belt, it will be moved toward the air blower by the conveyor belt.

[0006] In a further embodiment of the above description, the storage frame has a storage slot in the middle that matches the PCB board, and a discharge port is located at the lower end of the storage frame near the conveyor belt. The height of the discharge port is the same as the height of the PCB board. The storage slot extends towards the discharge port, and the bottom surface of the storage slot is flush with the lower edge of the discharge port. The storage slot is used to store the PCB boards in a centralized manner, while the discharge port, which is flush with the height of the PCB board, is used to limit the number of PCB boards taken out each time, preventing multiple PCB boards from being pushed out at once.

[0007] In a further embodiment of the above description, the storage frame has a top-out groove on its side away from the discharge port. The top-out groove is connected to the storage trough. The top-out assembly is installed on the outer side of the storage frame near the top-out groove. The top-out assembly includes a partition block and a top-out block. The partition block is movably disposed in the middle of the top-out groove, and its top surface is flush with the bottom surface of the storage trough. A separating block is connected above the partition block. The separating block has an inclined surface at its end near the storage trough, and its bottom surface is flush with the upper edge of the discharge port. The top-out blocks are movably disposed on both sides of the top-out groove. When the first and second ejection cylinders push out the PCBs, the separator block moves towards the stacked PCBs in the storage tank. Since the bottom surface of the separator block is flush with the upper edge of the discharge port, which is equivalent to the height of one PCB, the inclined surface on the separator block will insert into the gap between the stacked PCBs when the separator block moves, and then separate the stacked PCBs. After separation, the ejection block pushes out the PCBs near the discharge port, thus preventing two PCBs from being pushed out at once.

[0008] In a further embodiment of the above description, a first ejector cylinder is provided on the outer side of the storage frame near the partition block. The drive rod of the first ejector cylinder is connected to the partition block. A connecting plate is provided at the end of the first ejector cylinder away from the partition block. The connecting plate is fixedly connected to the outer wall of the storage frame. A connecting block is provided at the end of the ejector block away from the ejector slot. A second ejector cylinder is provided at the lower end of the inner side of the storage frame. The push rod of the second ejector cylinder is connected to the connecting block.

[0009] In a further embodiment of the above description, the top surface of the storage frame is provided with an opening that communicates with the storage trough, and a discharge funnel is provided on the top surface of the storage frame near the opening, with the discharge funnel being integrally connected to the storage frame.

[0010] Compared with the prior art, the beneficial effects of this utility model are: through the design of the air blower and the air blowing pipe on the air blower, the air blower is set opposite to the upper mounting plate and the lower mounting plate, and the air inlet pipe on the air blower is connected to the air pump, so that when the PCB board is moved out of the storage box by the conveyor belt, the air blowers on the upper and lower sides of the PCB board can effectively blow air to clean the upper and lower sides of the PCB board, eliminating the need for workers to use hand-held cleaning equipment to clean the PCB board. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of a material handling device for vapor phase welding according to this utility model; Figure 2 This is a three-dimensional structural schematic diagram of a material handling device for vapor phase welding according to this utility model from another perspective; Figure 3 This is an exploded structural diagram of a material handling device for vapor phase welding according to this utility model; Figure 4 This is an exploded structural diagram of a material handling device for vapor phase welding according to this utility model from another perspective. Figure 5 This is a schematic diagram of the assembly structure of a material handling device for vapor phase welding according to this utility model; Figure 6 This is a schematic diagram of the independent structure of the air blowing cylinder in a material handling device for vapor phase welding according to this utility model; Figure 7 This is a schematic diagram illustrating the working effect of a material handling device for vapor phase welding according to this utility model; Figure 8 This is a schematic diagram of the independent structure of the ejection component in a material handling device for vapor phase welding according to this utility model; In the diagram: 1-Storage box, 2-Upper mounting plate, 3-Lower mounting plate, 4-Air blower, 5-Rolling shaft; 6-Drive channel, 7-Conveyor belt, 8-Feeding roller, 9-Air blowing hole, 10-Air inlet pipe; 11-Support platform, 12-Clearing groove, 13-Drive motor, 14-Linkage belt, 15-Material storage trough; 16-Discharge port, 17-Top discharge trough, 18-Separating block, 19-Top discharge block, 20-Separating block, 21-Inclined surface; 22-First ejector cylinder, 23-Connecting plate, 24-Connecting block, 25-Second ejector cylinder, 26-Opening; 27-Discharge funnel. Detailed Implementation

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] For this embodiment, please refer to Figures 1-8 The present invention relates to a material handling device for vapor phase welding, comprising a storage frame 1 for storing PCB boards, a material dispensing component, and an ejection component. The material dispensing component is located on one side of the lower end of the storage frame 1, and the ejection component is located on the side of the lower end of the storage frame 1 away from the material dispensing component. The material dispensing component includes an upper mounting plate 2, a lower mounting plate 3, an air blower 4, and a rolling shaft 5. The upper mounting plate 2 and the lower mounting plate 3 are mirror-symmetrically arranged on both sides of the lower end of the storage frame 1, and the upper mounting plate 2 is fixedly mounted on the top surface of the lower mounting plate 3. The air blower 4 and the rolling shaft 5 are staggered on the opposite side of the upper mounting plate 2 and the lower mounting plate 3. The air blower 4 and the rolling shaft 5 of board 2 are installed facing the lower mounting plate 3, and the air blower 4 and the rolling shaft 5 of the lower mounting plate 3 are installed facing the upper mounting plate 2. A drive channel 6 for the PCB board to pass through is left between the air blowers 4 and the rolling shaft 5 on both sides. A conveyor belt 7 is provided in the drive channel 6. Feeding rollers 8 are distributed on the opposite side of the air blower 4. The feeding rollers 8 are flush with the rolling shaft 5. Air blowing holes 9 are distributed near the feeding rollers 8 of the air blower 4. An air inlet pipe 10 is provided on the side of the air blower 4 near the mounting plate. The air inlet pipe 10 passes through the mounting plate and extends in a direction away from the storage frame 1. Specifically: The air inlet pipe 10 on the air blower 4 is connected to the air outlet of the air pump (not shown). The air blown out by the air pump (not shown) is delivered into the air inlet pipe 10 and then blown out through the air outlet 9 to clean the PCB board. When the PCB board is stacked inside the storage frame 1, the PCB board is pushed out of the storage frame 1 by the ejection component. At the same time as being pushed out, the PCB board will come into contact with the conveyor belt 7. Under the action of the conveyor belt 7, the PCB board will be moved away from the storage frame 1. During the movement, the air blower 4 will blow air to clean the top and bottom surfaces of the PCB board. It should be noted that the specific structure of the conveyor belt 7 in this application adopts a narrow conveyor belt commonly found on the market. Its structure is no different from that of common narrow conveyor belts on the market and is a technical feature well known to those skilled in the art. No specific limitations are made here. The accompanying drawings are only for illustrative purposes and are not intended to limit the actual structure of the conveyor belt 7. Those skilled in the art should be able to make reasonable selections and designs based on the actual situation.

[0014] The bottom surface of the storage box 1 is provided with a support platform 11. One end of the support platform 11 extends toward the storage box 1. The end of the conveyor belt 7 away from the storage box 1 is connected to the top surface of the support platform 11 away from the storage box 1 through a support base. The end of the conveyor belt 7 close to the storage box 1 extends toward the inside of the storage box 1. The lower end of the storage box 1 is provided with a clearance groove 12 that matches the conveyor belt 7. The lower end of the storage box 1 is provided with a drive motor 13 near the clearance groove 12. The drive motor 13 is synchronously driven by the conveyor belt 7 through a linkage belt 14. Specifically, the drive motor 13 drives the conveyor belt 7 to rotate via the linkage belt 14. The specific connection structure adopts the common synchronous belt drive method on the market. The specific details are not described here. The attached drawings are only for illustration and are not intended to limit the actual structure. Those skilled in the art should be able to make reasonable selections and designs according to the actual situation.

[0015] The storage box 1 has a storage groove 15 in the middle that matches the PCB board. The lower end of the storage box 1 is provided with a discharge port 16 near the conveyor belt 7. The height of the discharge port 16 is the same as the height of the PCB board. The storage groove 15 extends toward the discharge port 16, and the bottom surface of the storage groove 15 is the same as the lower edge of the discharge port 16. The storage frame 1 has a top-out groove 17 on one side away from the discharge port 16. The top-out groove 17 is connected to the storage trough 15. The top-out assembly is installed on the outer side of the storage frame 1 near the top-out groove 17. The top-out assembly includes a partition block 18 and a top-out block 19. The partition block 18 is movably disposed in the middle of the top-out groove 17. The top surface of the partition block 18 is flush with the bottom surface of the storage trough 15. A separation block 20 is connected above the partition block 18. The end of the separation block 20 near the storage trough 15 has an inclined surface 21. The bottom surface of the separation block 20 is flush with the upper edge of the discharge port 16. The top-out block 19 is movably disposed on both sides of the top-out groove 17. The outer side of the storage frame 1 is provided with a first ejection cylinder 22 near the partition block 18. The drive rod of the first ejection cylinder 22 is connected to the partition block 18. The end of the first ejection cylinder 22 away from the partition block 18 is provided with a connecting plate 23. The connecting plate 23 is fixedly connected to the outer wall of the storage frame 1. The end of the ejection block 19 away from the ejection groove 17 is provided with a connecting block 24. The lower end of the inner side of the storage frame 1 is provided with a second ejection cylinder 25. The push rod of the second ejection cylinder 25 is connected to the connecting block 24. Specifically, when it is necessary to eject the stacked PCBs in the storage box 1, the first ejection cylinder 22 is activated. The drive of the first ejection cylinder 22 drives the separator block 18 to eject. At the same time, the separator block 18 drives the separation block 20 to move toward the PCBs. Since the inclined surface 21 on the separation block 20 and the bottom surface of the separation block 20 are flush with the upper edge of the discharge port 16, that is, the distance between the bottom surface of the separation block 20 and the bottom surface of the storage tank 15 is the height of a PCB, when the separator block 18 drives the separation block 20 to move toward the PCBs, the separator block 18 will be inserted into the gap between the stacked PCBs, thereby separating the stacked PCBs individually. Then the second ejector cylinder 25 is activated, and the second ejector cylinder 25 retracts, causing the connecting block 24 and the ejector block 19 to move toward the PCB board, ejecting the PCB board from the discharge port 16. After ejection, the PCB board comes into contact with the conveyor belt 7, and the cleaning process begins.

[0016] The top surface of the storage frame 1 is provided with an opening 26, which is connected to the storage trough 15. A discharge funnel 27 is provided on the top surface of the storage frame 1 near the opening 26, and the discharge funnel 27 is integrally connected to the storage frame 1.

[0017] The working process of this utility model is as follows: 1) Connect the air pump (not shown) to the air inlet pipe 10, turn on the drive motor 13, and drive the conveyor belt 7 to move through the linkage belt 14. 2) The first ejection cylinder 22 is activated. The first ejection cylinder 22 drives the separator 18 to eject. At the same time, the separator 18 drives the separation block 20 to move toward the PCB board. Since the inclined surface 21 on the separation block 20 and the bottom surface of the separation block 20 are flush with the upper edge of the discharge port 16, that is, the distance between the bottom surface of the separation block 20 and the bottom surface of the storage tank 15 is the height of a PCB board, when the separator 18 drives the separation block 20 to move toward the PCB board, the separator 18 will be inserted into the gap between the stacked PCB boards, thereby separating the stacked PCB boards individually. Then the second ejector cylinder 25 is activated, the second ejector cylinder 25 retracts, driving the connecting block 24 and the ejector block 19 to move toward the PCB board, ejecting the PCB board from the discharge port 16, and after ejection, the PCB board comes into contact with the conveyor belt 7. The conveyor belt 7 moves the PCB board away from the storage box 1. While moving, the air pump (not shown) blows air into the air blower 4 and finally sprays it out through the air outlet, thereby blowing out the dust or debris on the PCB board and achieving cleaning.

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions 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, 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.

[0019] Furthermore, in the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component 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," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A material handling device for vapor phase welding, comprising a storage frame for storing PCB boards, a discharging component, and an ejection component, wherein the discharging component is disposed on one side of the lower end of the storage frame, and the ejection component is disposed on the side of the lower end of the storage frame away from the discharging component, characterized in that: The discharge assembly includes an upper mounting plate, a lower mounting plate, an air blower, and a rolling shaft. The upper and lower mounting plates are mirror-symmetrically arranged on both sides of the lower end of the storage frame, with the upper mounting plate fixed to the top surface of the lower mounting plate. The air blower and rolling shaft are staggered on the opposite sides of the upper and lower mounting plates. The air blower and rolling shaft on the upper mounting plate face the lower mounting plate, and the air blower and rolling shaft on the lower mounting plate face the upper mounting plate. A drive channel for the PCB board to pass through is provided between the air blowers and rolling shafts on both sides. A conveyor belt is provided in the drive channel. Feeding rollers are distributed on the opposite side of the air blowers, and the feeding rollers are flush with the rolling shaft. Air blowing holes are distributed on the air blower near the feeding rollers. An air inlet pipe is provided on the side of the air blower near the mounting plate, and the air inlet pipe extends through the mounting plate in a direction away from the storage frame.

2. A material taking device for gas phase welding according to claim 1, characterized in that: The bottom surface of the storage box is provided with a support platform. One end of the support platform extends toward the storage box. The end of the conveyor belt away from the storage box is connected to the top surface of the support platform away from the storage box through a support base. The end of the conveyor belt near the storage box extends toward the inside of the storage box. The lower end of the storage box near the conveyor belt is provided with a clearance groove that matches the conveyor belt. A drive motor is installed at the lower end of the storage box near the clearance groove. The drive motor is synchronously driven by the conveyor belt through a linkage belt.

3. A material taking device for gas phase welding according to claim 1, characterized in that: The storage frame has a storage trough in the middle that matches the PCB board. The lower end of the storage frame is located near the conveyor belt and has a discharge port. The height of the discharge port is the same as the height of the PCB board. The storage trough extends towards the discharge port and the bottom of the storage trough is flush with the lower edge of the discharge port.

4. A material taking device for gas phase welding according to claim 3, characterized in that: The storage frame has a top-out groove on one side away from the discharge port. The top-out groove is connected to the storage trough. The top-out assembly is installed on the outer side of the storage frame near the top-out groove. The top-out assembly includes a partition block and a top-out block. The partition block is movably disposed in the middle of the top-out groove. The top surface of the partition block is flush with the bottom surface of the storage trough. A separation block is connected above the partition block. The end of the separation block near the storage trough has an inclined surface. The bottom surface of the separation block is flush with the upper edge of the discharge port. The top-out blocks are movably disposed on both sides of the top-out groove.

5. A material taking device for gas phase welding according to claim 4, characterized in that: A first ejector cylinder is provided on the outer side of the storage frame near the separator block. The drive rod of the first ejector cylinder is connected to the separator block. A connecting plate is provided at the end of the first ejector cylinder away from the separator block. The connecting plate is fixedly connected to the outer wall of the storage frame. A connecting block is provided at the end of the ejector block away from the ejector slot. A second ejector cylinder is provided at the lower end of the inner side of the storage frame. The push rod of the second ejector cylinder is connected to the connecting block.

6. A material taking device for gas phase welding according to claim 1, characterized in that: The top surface of the storage frame is provided with an opening that communicates with the storage trough. A discharge funnel is provided on the top surface of the storage frame near the opening, and the discharge funnel is integrally connected to the storage frame.

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