Conveying device for packaging sensing LED production and using method

Abstract

The invention belongs to the field of electrical element preparation, and particularly relates to a conveying device for packaging sensing LED production and a using method.The conveying device comprises a jig, the jig comprises a base, the middle of the base is vertically communicated, a bracket is arranged on the base, the bracket is annularly arranged in the hollow position of the base, and the base is provided with a plurality of clamping grooves; the annularly arranged bracket forms the bracket groove, and the bracket groove is used for placing the printed circuit board; in the process of adjusting the size of the supporting groove, due to the fact that the supporting plate is kept fixed, the PCB placed on the supporting plate cannot generate unnecessary displacement or vibration due to movement of the supporting plate, and the position accuracy and stability of the PCB in the whole machining process are guaranteed. Meanwhile, more precise adjustment can be achieved only by moving the bracket instead of the whole supporting plate, and the problem of excessive adjustment or insufficient precision caused by overall movement is avoided.

Description

Technical Field

[0001] The present invention belongs to the field of electrical component preparation, and particularly relates to a conveying device and a usage method for the production of encapsulated sensing LEDs. Background Art

[0002] An encapsulated sensing LED, also known as a smart LED or an integrated LED, is a miniaturized module that integrates an LED and one or more sensors through a PCB (printed circuit board). However, in the process of producing such encapsulated sensing LEDs on existing PCBs, the following problems exist:

[0003] Firstly, with the increasing demand for the miniaturization of encapsulated sensing LEDs, the size of the PCB also decreases accordingly; when the thickness of the PCB is reduced to a very thin level, problems such as jamming may occur when using horizontal line equipment (horizontal production lines, production assembly lines are used for steps in the PCB manufacturing process, such as electroplating, cleaning, etc.). Due to the lack of sufficient rigidity, ultra-thin PCBs are prone to bending or deformation during transportation, resulting in their inability to pass through each process on the production line smoothly.

[0004] Secondly, as the thickness of the PCB decreases, the metal layer (usually copper) on its surface also becomes thinner. When processed by horizontal line equipment, if friction occurs between the PCB and the internal components of the equipment, it may cause scratching or damage to the metal layer. This situation not only affects the appearance quality of the final product but may also weaken its electrical performance and reliability.

[0005] Finally, for PCBs with particularly small sizes (e.g., less than 20x20 mm), existing horizontal line equipment may not be suitable. Because the minimum distance between the rollers on the conveyor belt is usually 25 mm, small PCBs may fall into the gaps between the rollers or be unable to maintain a stable position during transportation, thus causing a series of production problems.

[0006] In summary, in the process of preparing existing PCBs, the main problems faced by encapsulated sensing LEDs include: difficult transportation of ultra-thin PCBs, poor protection effect of the surface metal layer, and difficulty in adapting small PCBs to current production equipment. Summary of the Invention

[0007] In view of this, the purpose of the present invention is to provide a conveying device and a usage method for the production of encapsulated sensing LEDs to ensure that these PCBs with special specifications can complete the manufacturing process safely and efficiently.

[0008] To solve the above technical problems, the first technical solution of the present invention is a conveying device for the production of encapsulated sensing LEDs. The encapsulated sensing LED includes a printed circuit board. The conveying device includes a jig. The jig includes a base. The middle part of the base is vertically communicated. A bracket is arranged on the base. The bracket is annularly arranged inside the hollow of the base. The annularly arranged bracket forms the trough. The trough is used for placing the printed circuit board.

[0009] Preferably, the cooperation relationship between the base and the bracket in the jig: A piston chamber is opened on the base. A piston block is arranged in the piston chamber. The piston block is connected to the bracket, dividing the piston chamber into a rod chamber and a rodless chamber. The rodless chamber is hermetically arranged. An air hole is opened on the rod chamber. By controlling the conduction of the air hole, the switching between the closed state and the conduction state of the rod chamber is controlled. When the rod chamber is in the closed state, the bracket and the base are fixedly connected. When the rod chamber is in the conduction state, the bracket and the base are slidably connected. The switching between the fixed connection and the sliding connection between the base and the bracket realizes the control and fixation of the size of the trough.

[0010] Furthermore, the structural setting of the air hole: The air hole is arranged inside the hollow of the base and opposite to the bracket. A control member is movably arranged on the air hole. The control member is used for the conduction of the air hole, thereby controlling the switching between the closed state and the conduction state of the rod chamber.

[0011] Furthermore, a tray is further introduced in the jig to ensure good support for the printed circuit board: The jig includes a tray at the bottom of the trough. The bracket is composed of a top structural member, a middle structural member, and a bottom structural member. The top structural member and the bottom structural member are arranged in parallel. The middle structural member and the bottom structural member are arranged perpendicularly. The top structural member faces the outside of the hollow of the base. The top structural member is connected to the piston block. The bottom structural member faces the inside of the hollow of the base. The bottom structural member is connected to the tray. The top plane of the tray and the top plane of the bottom structural member are on the same horizontal plane. The tray and the bottom structural member are both used to support the printed circuit board.

[0012] Furthermore, the adjustment of the jig can be carried out without adjusting the position of the tray: A piston rod is arranged outside the tray. A piston channel is also arranged on the bracket. One end of the piston channel passes through the top structural member and communicates with the rodless chamber. The other end of the piston channel passes through the bottom structural member and is movably connected to the piston rod. When the base and the bracket are in a slidable connection, moving the bracket realizes the control of the size of the trough.

[0013] Further, the situation of adjusting the fixture chamber bracket and the valve: The bracket is divided into a fixed bracket and a sliding bracket according to the fixed connection and sliding connection with the base. The valves used to control the fixed bracket and the sliding bracket are a fixed valve and a sliding valve in sequence. The fixed valve is the valve in the conducting state, and the sliding valve is the valve in the closed state. When controlling the size of the bracket, there is at least one fixed bracket and the fixed valve to ensure that the support plate remains fixed during the adjustment process.

[0014] Further, the setting of the inlet end angle plate ensures good support for the printed circuit board: The brackets on the base include a first bracket and a second bracket arranged adjacent to each other. An end angle plate is arranged between the first bracket and the second bracket. The end angle plate is composed of a first structural member in contact with the first bracket and a second structural member in contact with the second bracket. The first structural member is perpendicular to the first bracket, and the second structural member is perpendicular to the second bracket. Fixing members are arranged on both the first bracket and the second bracket, and sliding members acting on the fixing members are arranged on both the first structural member and the second structural member. The cooperation between the fixing member and the sliding member realizes the sliding adjustment between the end angle plate and the first bracket and the second bracket.

[0015] Further, a material taking groove is opened on the fixture to facilitate subsequent material discharging: At least one of the brackets on the base is provided with a material taking groove. The material taking groove communicates with the support groove, and the depth of the material taking groove is greater than the depth of the support groove to facilitate removing the printed circuit board from the support groove.

[0016] Preferably, a tray and a carrier are introduced into the conveying device for batch transportation: The conveying device includes a tray and a carrier. The tray is used to place the fixture, and the carrier is used to transport the tray. An accommodation groove is opened on the tray, and the inner side of the accommodation groove is hollowed out. The accommodation groove is used to place the fixture. Positioning holes and direction identification holes are opened on the tray to facilitate the fixation of the tray on the carrier. A vertical rod is arranged on the top surface of the tray, and a limiting hole is arranged at the corresponding position of the vertical rod on the back surface of the tray. The cooperation between the vertical rod and the limiting hole realizes the stacked placement of the tray on the carrier.

[0017] In order to solve the above technical problems, the second technical solution of the present invention is a method for using a conveying device for packaging and sensing LED production, applying the conveying device in the first technical solution. The method is as follows:

[0018] S1. Open the air holes through the control member, adjust the position of the bracket according to the size of the printed circuit board to ensure that the size of the support groove is suitable for placing the printed circuit board, and then close all the air holes;

[0019] S2. Place the printed circuit board into the bracket, ensuring that it is placed stably on the support plate and the bottom structural member; if multiple printed circuit boards are required, repeat the above steps.

[0020] S3. Use the tray placement fixture and fix the tray on the carrier through the positioning holes and direction identification holes to ensure that there is no displacement during transportation.

[0021] S4. Utilize the vertical rod and limit hole system to stack multiple trays with fixtures to facilitate efficient use of space for transportation.

[0022] S5. After completing the production process, remove the printed circuit board easily through the material taking slot.

[0023] The technical effects of the present invention are mainly reflected in the following aspects:

[0024] By setting a piston chamber on the base and using air holes and control components (such as a sealing plug) to control the position of the piston block, precise adjustment of the bracket position is achieved; the size of the bracket can be flexibly adjusted according to different PCB sizes to ensure that each PCB can be properly supported.

[0025] During the process of adjusting the size of the bracket, since the support plate remains fixed, the PCB placed on it will not undergo unnecessary displacement or vibration due to the movement of the support plate, ensuring the position accuracy and stability of the PCB throughout the processing process; at the same time, only the bracket needs to be moved instead of the entire support plate, which can achieve more precise adjustment and avoid problems such as over-adjustment or insufficient precision caused by overall movement. Moreover, the design of the non-moving support plate reduces the risk of surface scratches or other physical damages to the PCB caused by movement; this is particularly important for ultra-thin or particularly sensitive PCBs. Brief Description of the Drawings

[0026] Figure 1 is the structural diagram of the present invention;

[0027] Figure 2 is Figure 1 the combined structural diagram of the fixture and the tray in

[0028] Figure 3 is Figure 1 the structural diagram of the fixture in

[0029] Figure 4 is Figure 1 the half-sectional structural diagram of the fixture in

[0030] Figure 5 is Figure 1 the partial sectional structural diagram of the fixture in

[0031] Figure 6 is Figure 1Structural diagram of the middle tray;

[0032] In the figure: 1. Fixture; 11. Base, 111. Piston chamber, 112. Piston block, 113. Rod chamber, 114. Rodless chamber; 12. Bracket, 121. Top structural member, 122. Intermediate structural member, 123. Bottom structural member, 124. Piston passage; 13. Tray groove, 14. Tray board, 141. Piston rod; 15. End angle plate; 16. First bracket, 17. Second bracket; 2. Tray, 21. Placement groove, 22. Positioning hole, 23. Direction identification hole, 24. Vertical rod; 3. Carrier. Specific implementation manners

[0033] The following further details the specific implementation manners of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master. In the embodiments, it should be understood that the orientation or positional relationships indicated by terms such as "middle", "upper", "lower", "top", "right side", "left end", "above", "back", "middle part", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. Additionally, in this specific implementation manner, if not otherwise specified, the connection or fixing methods between components can all be bolt fixing, pin fixing, or pin shaft connection, etc. commonly used in the prior art. Therefore, they will not be elaborated in this embodiment.

[0034] The packaged sensing LED and the printed circuit board mentioned in the embodiments are introduced in the background art and are also common knowledge in the art, so they will not be elaborated further.

[0035] Embodiment 1

[0036] Refer to Figure 3 、 Figure 4 、 Figure 5 , this embodiment discloses a conveying device for the production of packaged sensing LEDs, wherein the packaged sensing LED includes a printed circuit board. In order to solve the problem of bending or deformation of the ultra-thin PCB during transportation, the conveying device of this embodiment adopts the fixture 1. The conveying device includes the fixture 1, and the fixture 1 includes a base 11. The middle part of the base 11 is vertically and communicatively arranged. A bracket 12 is arranged on the base 11. The bracket 12 is annularly arranged inside the hollow part of the base 11. The annularly arranged bracket 12 forms the tray groove 13, and the tray groove 13 is used for placing the printed circuit board. In order to avoid scratching or damaging the metal layer on the surface of the PCB during processing on the production line, the present invention proposes to use a soft material for the part of the bracket 12 in contact with the PCB, which can effectively reduce friction and protect the metal layer from damage.

[0037] See Figure 4 and Figure 5 A piston chamber 111 is formed on the base 11. A piston block 112 is disposed within the piston chamber 111. The piston block 112 is connected to the bracket 12, dividing the piston chamber 111 into a rod chamber 113 and a rodless chamber 114. The rodless chamber 114 is hermetically sealed, and an air hole is formed in the rod chamber 113. By controlling the opening and closing of the air hole, the switching between the sealed state and the conductive state of the rod chamber 113 is controlled. When the rod chamber 113 is in the sealed state, the bracket 12 and the base 11 are fixedly connected. When the rod chamber 113 is in the conductive state, the bracket 12 and the base 11 are slidably connected. The switching between the fixed connection and the sliding connection between the base 11 and the bracket 12 realizes the control and fixation of the size of the bracket 13. By simply controlling the opening and closing of the air hole, the size of the bracket 13 can be quickly adjusted, greatly improving the versatility and adaptability of the device. When the air hole is conductive, the size of the bracket 13 can be adjusted by manually pushing the bracket 12.

[0038] Specifically, when it is necessary to adjust the size of the bracket 13 to accommodate PCBs of different sizes, the air hole on the rod chamber 113 is opened to make it in the conductive state. In this state, the position of the piston block 112 can be adjusted by controlling the amount of air entering the rod chamber 113, thereby changing the position of the bracket 12 relative to the base 11. This allows the user to flexibly adjust the size of the bracket 13 according to actual needs, ensuring that PCBs of various sizes can be stably placed. To enable even very small PCBs to pass through the production line smoothly, the size of the bracket 13 in the present invention adopts an adjustable design. Specifically, the size of the bracket 13 can be adjusted according to the actual size of the PCB, ensuring that even small PCBs smaller than 20x20 mm can be stably placed in the bracket 13 and will not fall into the gaps between the rollers.

[0039] The air hole is provided inside the hollow part of the base 11 and opposite to the bracket 12, ensuring that the air hole can easily act on the rod chamber 113 to achieve precise control of the position of the piston block 112. A control member is movably disposed on the air hole. The control member can be a sealing plug. By inserting or pulling out the sealing plug, the opening and closing state of the air hole can be manually or automatically controlled, thereby adjusting whether the rod chamber 113 is in the sealed state or the conductive state. The control member is used for the conduction of the air hole, thereby controlling the switching between the sealed state and the conductive state of the rod chamber 113. By simply inserting and pulling out the sealing plug, the state conversion of the rod chamber 113 can be easily achieved, greatly simplifying the operation process.

[0040] See Figure 4 and Figure 5, the fixture 1 includes a support plate 14 located at the bottom of the bracket 13, and the support plate 14 is used to jointly support the PCB placed thereon with the bottom structural member 123. The bracket 12 is composed of a top structural member 121, a middle structural member 122, and a bottom structural member 123. The top structural member 121 and the bottom structural member 123 are arranged in parallel, ensuring the balance and stability of the bracket 12 during movement. The middle structural member 122 and the bottom structural member 123 are arranged perpendicular to each other, providing the necessary strength and support for the entire bracket 12 to prevent deformation or damage caused by uneven stress. The top structural member 121 faces the outside of the hollow part of the base 11, and the top structural member 121 is connected to the piston block 112, responsible for adjusting the position of the bracket 12 through the movement of the piston block 112; the middle structural member 122 plays a role in connecting the top structural member 121 and the bottom structural member 123, enhancing the stability and rigidity of the overall structure; the bottom structural member 123 faces the inside of the hollow part of the base 11, and the bottom structural member 123 is connected to the support plate 14, directly participating in the support of the PCB. The top plane of the support plate 14 and the top plane of the bottom structural member 123 are on the same horizontal plane, and both the support plate 14 and the bottom structural member 123 are used to support the printed circuit board; ensuring that the PCB placed thereon can obtain uniform support and avoiding any pressure points that may cause the PCB to bend or be damaged.

[0041] See Figure 4 , Figure 5 , a piston rod 141 is provided on the outside of the support plate 14. The piston rod 141 is used to connect the bracket 12 and the support plate 14, but allows the two to move independently. A piston channel 124 is also provided on the bracket 12. One end of the piston channel 124 passes through the top structural member 121 and communicates with the rodless cavity 114, and the other end of the piston channel 124 passes through the bottom structural member 123 and is movably connected to the piston rod 141; specifically, the piston channel 124 starts from the top structural member 121, passes through the middle structural member 122 until the bottom structural member 123, and finally connects to the piston rod 141 located outside the support plate 14. When the base 11 and the bracket 12 are in a sliding connection, the movement of the bracket 12 is realized to control the size of the bracket 13; the piston rod 141 is movably connected to the support plate 14, which means that when the rod chamber 113 is in a conductive state, the bracket 12 can adjust its position through the movement of the piston block 112, but the support plate 14 remains fixed; at the same time, the position of the bracket 12 can be adjusted independently without changing the position of the support plate 14, so as to accurately control the size of the bracket 13.

[0042] The non - movement of the pallet 14 means that during the entire adjustment process, the PCB placed on it will not experience unnecessary displacement or vibration due to the movement of the pallet 14, which helps to ensure the stability and position accuracy of the PCB during processing. Since only the carriage 12 needs to be moved instead of the entire pallet 14, more precise adjustment can be achieved, avoiding problems such as over - adjustment or insufficient precision caused by overall movement. The design of the non - moving pallet 14 reduces the risk of scratching or other physical damage to the surface of the PCB caused by movement; this is particularly important for ultra - thin or particularly sensitive PCBs.

[0043] See Figure 3 , the carriage 12 is divided into a fixed carriage 12 and a sliding carriage 12 according to the fixed connection and sliding connection with the base 11. The fixed carriage 12 is used to provide a stable basic support during the adjustment process, while the sliding carriage 12 allows movement to adjust the size of the bracket 13. The valves for controlling the fixed carriage 12 and the sliding carriage 12 are a fixed valve and a sliding valve respectively. Each carriage 12 has a corresponding valve (fixed valve or sliding valve) for controlling whether it is in a fixed state or a sliding state. The fixed valve remains in a conducting state, making the corresponding carriage 12 immobile; the sliding valve can be closed or opened to control whether the corresponding carriage 12 slides. Specifically, the fixed valve is a valve in a conducting state, and the sliding valve is a valve in a closed state. When adjusting the size of the bracket 13, there is at least one fixed carriage 12 and a fixed valve to ensure the immobility of the pallet 14 during the adjustment process.

[0044] The carriage 12 on the base 11 includes a first carriage 16 and a second carriage 17 arranged adjacent to each other. An end - angle plate 15 is provided between the first carriage 16 and the second carriage 17. The end - angle plate 15 is composed of a first structural member in contact with the first carriage 16 and a second structural member in contact with the second carriage 17. The first structural member is perpendicular to the first carriage 16, and the second structural member is perpendicular to the second carriage 17. Fixing members are provided on both the first carriage 16 and the second carriage 17, and sliding members acting on the fixing members are provided on both the first structural member and the second structural member. The cooperation between the fixing members and the sliding members realizes the sliding adjustment between the end - angle plate 15 and the first carriage 16 and the second carriage 17. The fixing members and the sliding members can be slide rails and slide bars. Specifically, through the end - angle plate 15 and its sliding adjustment mechanism with the carriage 12, the size of the bracket 13 can be adjusted conveniently and quickly to meet the needs of PCBs of different sizes. At the same time, the design of the end - angle plate 15 not only increases the rigidity of the overall structure but also provides additional support points, helping to maintain the flatness and stability of the PCB.

[0045] At least one of the brackets 12 on the base 11 has a material taking groove formed thereon. The material taking groove communicates with the supporting groove 13, and the depth of the material taking groove is greater than that of the supporting groove 13. This allows for more convenient removal of the PCB from the supporting groove 13 using tools or other methods without causing damage to the PCB.

[0046] See Figure 1 , Figure 2 , the conveying device includes a tray 2 and a carrier 3. The carrier 3 can be the carrier vehicle shown in the drawings and can also be the horizontal line equipment mentioned in the background art. The tray 2 is used to place the jig 1, and the carrier 3 is used to transport the tray 2. An accommodation groove 21 is formed on the tray 2, and the inner side of the accommodation groove 21 is hollowed out. The accommodation groove 21 is used to place the jig 1. Positioning holes 22 and direction identification holes 23 are formed on the tray 2 to facilitate the fixation of the tray 2 on the carrier 3, ensuring that the tray 2 can be accurately fixed on the carrier 3 and preventing deviation or incorrect installation during transportation. A vertical rod 24 is provided on the top surface of the tray 2 to provide a support point when stacking with other trays 2. A limiting hole is provided at the corresponding position of the vertical rod 24 on the back surface of the tray 2. When multiple trays 2 are stacked, the vertical rod 24 is inserted into the limiting hole to ensure the stacking stability and safety. The cooperation between the vertical rod 24 and the limiting hole realizes the stacked placement of the tray 2 on the carrier 3.

[0047] Embodiment Two

[0048] A method for using a conveying device for packaging and sensing LED production, which applies the conveying device described in Embodiment One, is as follows:

[0049] S1 Adjust the position of the bracket 12: Open or close the air holes through a control member (such as a sealing plug), and adjust the position of the bracket 12 according to the size of the PCB to be processed. Ensure that the size of the supporting groove 13 is suitable for placing the PCB. Once the appropriate position is found, close all the air holes to fix the position of the bracket 12.

[0050] S2 Place the PCB: Carefully place the PCB into the adjusted supporting groove 13, ensuring that it is stably placed on the support plate 14 and the bottom structural member 123. If multiple PCBs need to be processed, repeat the above steps, adjust the size of each supporting groove 13 respectively, and place the corresponding PCB.

[0051] S3 Fix the tray 2 to the carrier 3: Place the tray 2 equipped with the jig 1 (including the bracket 12 on which the PCB has been placed) properly, and accurately fix it on the carrier 3 using the positioning holes 22 and direction identification holes 23 on the tray 2. This step ensures that the tray 2 will not be displaced or incorrectly installed during transportation.

[0052] S4 Stacking Tray 2: By utilizing the vertical rods 24 provided on the top surface of the tray 2 and the limit hole system at the corresponding position on the back surface, multiple trays 2 containing fixtures 1 can be stacked. This method not only improves the space utilization rate but also facilitates the logistics management of large-scale production.

[0053] S5 Removing the PCB: After all the necessary production processes are completed, the PCB can be easily removed through the specially designed material taking slot on the bracket 12. This design makes the operation more convenient and reduces the risk of potential damage to the PCB.

[0054] In addition; as common general knowledge in this industry; the structural members mentioned above are the general terms for each part of a single part. The concepts of the rod chamber 113 and the rodless chamber 114 come from hydraulic transmission. In the present invention, the piston chamber 111 on one side of the top structural member 121 is the rod chamber 113, and vice versa is the rodless chamber 114. The above is common general knowledge; therefore, the principles and structures thereof will not be elaborated in detail.

[0055] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A conveying device for producing packaged sensor LEDs, wherein the packaged sensor LEDs include a printed circuit board, characterized in that: The conveying device includes a fixture, and the fixture includes a base. The middle part of the base is vertically connected. A bracket is arranged on the base. The bracket is arranged in a ring shape in the hollow part of the base. The ring-shaped bracket forms the bracket, and the bracket is used for placing the printed circuit board.

2. The conveying device according to claim 1, characterized in that: The base is provided with a piston cavity, a piston block is arranged in the piston cavity, the piston block is connected to the bracket, and the piston cavity is divided into a rod cavity and a rodless cavity; the rodless cavity is sealed, and an air hole is provided on the rod cavity; by controlling the conduction of the air hole, the switching of the rod cavity between the sealed state and the conduction state is controlled; When the rod cavity is in a closed state, the bracket and the base are in a fixed connection; when the rod cavity is in a conducting state, the bracket and the base are in a sliding connection; the base and the bracket are switched between a fixed connection and a sliding connection to achieve control and fixation of the bracket size.

3. The conveying device according to claim 2, characterized in that: The air hole is arranged inside the hollow part of the base and opposite to the bracket. A control member is movably provided on the air hole, and the control member is used for conducting the air hole, so as to control the switching of the rod cavity between a closed state and a conducting state.

4. The conveying device according to claim 3, characterized in that: The jig includes a support plate located at the bottom of the bracket; The bracket is composed of a top structure, a middle structure and a bottom structure, the top structure and the bottom structure are arranged in parallel, and the middle structure and the bottom structure are arranged vertically; The top structural member faces the outer side of the hollow part of the base, and the top structural member is connected to the piston block; the bottom structural member faces the inner side of the hollow part of the base, and the bottom structural member is connected to the support plate; The top plane of the support plate and the top plane of the bottom structure are on the same horizontal plane, and both the support plate and the bottom structure are used to support the printed circuit board.

5. The conveying device according to claim 4, characterized in that: A piston rod is arranged on the outer side of the support plate; The bracket is also provided with a piston channel, one end of which is connected to the rodless chamber through the top structural member, and the other end of which is movably connected to the piston rod through the bottom structural member; When the base and the bracket are in sliding connection, the bracket is moved to control the size of the bracket.

6. The conveying device according to claim 5, characterized in that: The bracket is divided into a fixed bracket and a sliding bracket according to the fixed connection and the sliding connection between the bracket and the base, and the valves used to control the fixed bracket and the sliding bracket are fixed valves and sliding valves respectively, the fixed valve is a valve in a conducting state, and the sliding valve is a valve in a closed state; When controlling the size of the bracket, there is at least one fixed bracket and one fixed valve to ensure that the support plate remains stationary during the adjustment process.

7. The conveying device according to claim 5, characterized in that: The bracket on the base includes a first bracket and a second bracket arranged adjacent to each other, an end angle plate is arranged between the first bracket and the second bracket, the end angle plate is composed of a first structural member contacting the first bracket and a second structural member contacting the second bracket, the first structural member is perpendicular to the first bracket, and the second structural member is perpendicular to the second bracket; The first bracket and the second bracket are both provided with fixing parts, and the first structural member and the second structural member are both provided with sliding parts acting on the fixing parts. The fixing parts and the sliding parts cooperate to realize sliding adjustment between the end angle plate and the first bracket and the second bracket.

8. The conveying device according to claim 3, characterized in that: At least one bracket on the base has a material extraction groove, which is connected to the bracket. The depth of the material extraction groove is greater than the depth of the bracket, so as to facilitate the removal of the printed circuit board from the bracket.

9. The conveying device according to claim 1, characterized in that: The conveying device comprises a pallet and a carrier, wherein the pallet is used to place the jig, and the carrier is used to transport the pallet; The tray is provided with a placement groove, the inner side of which is hollowed out, and the placement groove is used to place the fixture; The tray is provided with positioning holes and direction identification holes to facilitate the fixing of the tray on the carrier; A vertical pole is disposed on the top surface of the pallet, and a limiting hole is disposed at a corresponding position of the vertical pole on the back surface of the pallet. The vertical pole and the limiting hole cooperate to realize stacking of the pallets on the carrier.

10. A method for using a conveying device for producing packaged sensor LEDs, characterized in that: Using the delivery device described in claims 1 to 9, the method of use is as follows: S1. Use the control part to open the air holes, adjust the position of the bracket according to the size of the printed circuit board, ensure that the size of the bracket is suitable for placing the printed circuit board, and then close all the air holes; S2. Place the printed circuit board into the bracket, ensuring that it is placed stably on the bracket and the bottom structure; if multiple printed circuit boards are required, repeat the above steps; S3. Use a pallet to place the jig and fix the pallet on the carrier through the positioning holes and direction identification holes to ensure that it will not move during transportation; S4. Use the pole and limit hole system to stack multiple pallets with jigs to facilitate efficient use of space for transportation; S5. After completing the production process, the printed circuit board can be easily taken out through the material chute.

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