Packaging sensor LED production conveying device and use method

Abstract

The application belongs to the field of electrical element preparation, and particularly relates to a conveying device for packaging sensing LED production and a use method, which discloses that the conveying device comprises a jig, the jig comprises a base, a middle part of the base is vertically and communicatively arranged, a bracket is arranged on the base, the bracket is annularly arranged in a hollow part of the base, the annularly arranged bracket forms a bracket groove, and the bracket groove is used for placing the printed circuit board; in the process of adjusting the size of the bracket groove, since the bracket remains fixed, the PCB placed thereon will not be unnecessarily displaced or vibrated due to movement of the bracket, so that the positional accuracy and stability of the PCB in the whole processing process are ensured; meanwhile, only the bracket needs to be moved instead of the whole bracket, so that more fine adjustment can be realized, and the problems of excessive adjustment or insufficient accuracy caused by overall movement can be avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of electrical component preparation, and specifically relates to a conveying device for producing encapsulated sensing LEDs and a use method thereof. BACKGROUND

[0002] Encapsulated sensing LEDs, also known as smart LEDs or integrated LEDs, are miniaturized modules that integrate an LED and one or more sensors together through a PCB (printed circuit board). However, there are several problems in the current PCB production process for producing such encapsulated sensing LEDs:

[0003] Firstly, as the demand for miniaturization of encapsulated sensing LEDs increases, the size of the PCB also decreases; when the PCB thickness is reduced to a very thin level, the use of horizontal line equipment (horizontal production line, production line used in the PCB manufacturing process such as electroplating, cleaning, etc.) may encounter the problem of machine jamming. Ultra-thin PCBs lack sufficient rigidity and are prone to bending or deformation during transportation, which makes them unable to smoothly pass through each process on the production line.

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

[0005] Finally, for particularly small-sized PCBs (e.g., less than 20x20 mm), the current 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 gap between the rollers or cannot be stably positioned during transmission, thereby causing a series of production problems.

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

[0007] Therefore, the present application aims to provide a conveying device for producing encapsulated sensing LEDs and a use method thereof to ensure that these special specifications of PCBs can be safely and efficiently completed in the manufacturing process.

[0008] In order to solve the above technical problems, the first technical solution of the present invention is a conveying device for the production of packaged sensor LEDs, wherein the packaged sensor LEDs include a printed circuit board, the conveying device includes a jig, the jig includes a base, the middle part of the base is vertically connected, a bracket is provided 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.

[0009] Preferably, the matching relationship between the base and the bracket in the fixture is as follows: a piston chamber is provided on the base, a piston block is provided in the piston chamber, the piston block is connected to the bracket, and the piston chamber is divided into a rod chamber and a rodless chamber; the rodless chamber is sealed, and an air hole is provided on the rod chamber; by controlling the conduction of the air hole, the switching of the rod chamber between the closed state and the conducting state 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 conducting state, the bracket and the base are slidingly connected; the base and the bracket are switched between the fixed connection and the sliding connection to realize the control and fixation of the bracket size.

[0010] Furthermore, the structure of the air hole is arranged as follows: the air hole is arranged inside the hollow part of the base and opposite to the bracket, and a control part is movably provided on the air hole, and the control part is used for the conduction of the air hole, thereby controlling the switching of the rod cavity between the closed state and the conducting state.

[0011] Furthermore, a support plate is further introduced into the jig to ensure good support for the printed circuit board: the jig includes a support plate located at the bottom of the bracket; the bracket is composed of a top structural member, an intermediate structural member and a bottom structural member, the top structural member and the bottom structural member are arranged in parallel, and the intermediate structural member and the bottom structural member are arranged vertically; the top structural member faces the outside of the hollow part of the base, and the top structural member is connected to the piston block; the bottom structural member faces the inside 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 structural member are on the same horizontal plane, and the support plate and the bottom structural member are both used to support the printed circuit board.

[0012] Furthermore, the jig can be adjusted without adjusting the position of the support plate: a piston rod is provided on the outer side of the support plate; a piston channel is also provided on the support plate, one end of the piston channel is connected to the rodless cavity through the top structural member, and the other end of the piston channel is movably connected to the piston rod through the bottom structural member; when the base and the support plate are in a sliding connection, the support plate is moved to control the size of the bracket.

[0013] Furthermore, 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 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 the fixed valve to ensure that the bracket is fixed during the adjustment process.

[0014] Furthermore, an end angle plate is introduced to ensure good support for the printed circuit board: 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, and 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 provided on the first bracket and the second bracket, and sliding members are provided on the first structural member and the second structural member to act on the fixing members, and the fixing members and the sliding members cooperate to realize sliding adjustment between the end angle plate and the first bracket and the second bracket.

[0015] Furthermore, a material extraction groove is provided on the jig to facilitate subsequent material removal: at least one bracket on the base has a material extraction groove provided on the bracket, the material extraction groove is connected to the bracket, and 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.

[0016] Preferably, the conveying device introduces pallets and carriers for batch transportation: the conveying device includes a pallet and a carrier, the pallet is used to place the jig, and the carrier is used to transport the pallet; the pallet is provided with a placement groove, the inner side of the placement groove is hollowed out, and the placement groove is used to place the jig; the pallet is provided with positioning holes and direction identification holes to facilitate the fixation of the pallet on the carrier; the top surface of the pallet is provided with a vertical pole, and the back surface of the pallet is provided with a limiting hole at the corresponding position of the vertical pole, and the vertical pole and the limiting hole cooperate to realize the stacking of the pallets 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 producing packaged sensor LEDs, which uses the conveying device described in the first technical solution. The method of use is as follows:

[0018] 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 bracket size 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 bracket and the bottom structure; if multiple printed circuit boards are required, repeat the above steps;

[0020] S3. Use a pallet to place the jig and secure it to the carrier using the positioning holes and direction identification holes to ensure it does not move during transportation.

[0021] S4. Use the vertical pole and limit hole system to stack multiple pallets containing jigs to facilitate efficient use of space for transportation;

[0022] S5. After the production process is completed, the printed circuit board is easily taken out through the material chute.

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

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

[0025] During the bracket resizing process, the pallet remains stationary, preventing the PCB placed on it from unnecessary displacement or vibration due to the pallet's movement. This ensures the PCB's positional accuracy and stability throughout the entire process. Furthermore, since only the bracket, rather than the entire pallet, needs to be moved, more precise adjustments can be achieved, avoiding over-adjustment or insufficient precision caused by overall movement. Furthermore, the stationary pallet design reduces the risk of scratches or other physical damage to the PCB surface due to movement; this is particularly important for ultra-thin or particularly sensitive PCBs. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 for Figure 1 Coordination structure diagram of the middle fixture and the pallet;

[0028] Figure 3 for Figure 1 The structural diagram of the middle fixture;

[0029] Figure 4 for Figure 1 Half-section structure diagram of the middle fixture;

[0030] Figure 5 for Figure 1 Partial cross-sectional structural diagram of the middle fixture;

[0031] Figure 6 for 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. middle structural member; 123. bottom structural member; 124. piston channel; 13. bracket; 14. support plate; 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 pole; 3. carrier. DETAILED DESCRIPTION

[0033] The following is a further detailed description of the specific implementation methods of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and grasp. In the embodiments, it should be understood that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "top", "right", "left end", "above", "back", "middle", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, in this specific embodiment, if the connection or fixing method between the components is not particularly specified, the connection or fixing method can be fixed by bolts or pins commonly used in the prior art, or by pin connections, etc. Therefore, it will not be described in detail in this embodiment.

[0034] The packaged sensor LED and printed circuit board mentioned in the embodiment have been introduced in the background technology, and are also common knowledge in the field, so they will not be described in detail.

[0035] Example 1

[0036] See also Figure 3 、 Figure 4 、 Figure 5 , this embodiment discloses a conveying device for the production of packaged sensor LEDs, wherein the packaged sensor LEDs include printed circuit boards. In order to solve the problem of bending or deformation of ultra-thin PCBs during transportation, the conveying device of this embodiment adopts a jig 1, and the conveying device includes a jig 1, and the jig 1 includes a base 11, and the middle part of the base 11 is arranged in an upright and connected manner. A bracket 12 is provided on the base 11, and the bracket 12 is arranged in a ring shape in the hollow part of the base 11. The ring-shaped bracket 12 forms the bracket 13, and the bracket 13 is used for placing the printed circuit board. In order to avoid scratches or damage to the metal layer on the surface of the PCB when it is processed on the production line, the present invention proposes to use soft materials in the part where the bracket 12 contacts the PCB, which can effectively reduce friction and protect the metal layer from damage.

[0037] See also Figure 4 、 Figure 5 The base 11 is provided with a piston chamber 111, and a piston block 112 is provided in 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 sealed, and an air hole is provided on the rod chamber 113; by controlling the conduction of the air hole, the switching of the rod chamber 113 between the closed state and the conducting state is controlled; when the rod chamber 113 is in the closed state, the bracket 12 and the base 11 are fixedly connected; when the rod chamber 113 is in the conducting state, the bracket 12 and the base 11 are slidingly connected; the base 11 and the bracket 12 are switched between the fixed connection and the sliding connection to realize the control and fixation of the size of the bracket 13. The size of the bracket 13 can be quickly adjusted by simply controlling the opening and closing of the air hole, which greatly improves the versatility and adaptability of the device. When the air hole is open, the size of the bracket 13 can be adjusted by manually pushing the bracket 12.

[0038] Specifically, when the size of the bracket 13 needs to be adjusted to accommodate PCBs of different sizes, the air holes on the rod chamber 113 are opened to put it in a conducting 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 placed securely. In order to allow PCBs of particularly small sizes to pass through the production line smoothly, the size of the bracket 13 of the present invention adopts an adjustable design. Specifically, the bracket 13 can be adjusted according to the actual size of the PCB, ensuring that even a small PCB smaller than 20x20 mm can be securely placed in the bracket 13 and will not fall into the gap between the rollers.

[0039] The air hole is arranged inside the hollow part of the base 11 and opposite to the bracket 12, ensuring that the air hole can conveniently act on the rod chamber 113 to achieve precise control of the position of the piston block 112. A control member is movably provided on the air hole, and the control member can be a sealing plug. By inserting or removing the sealing plug, the conduction state of the air hole can be manually or automatically controlled, thereby adjusting whether the rod chamber 113 is in a closed state or a conducting state. The control member is used for the conduction of the air hole, thereby controlling the switching of the rod chamber 113 between the closed state and the conducting state; the state of the rod chamber 113 can be easily converted by simply plugging and unplugging the sealing plug, which greatly simplifies the operation process.

[0040] See also Figure 4 、 Figure 5The fixture 1 includes a support plate 14 located at the bottom of the bracket 13. The support plate 14 is used to support the PCB placed thereon together with the bottom structural member 123. The bracket 12 is composed of a top structural member 121, an intermediate structural member 122, and a bottom structural member 123. The top structural member 121 and the bottom structural member 123 are arranged in parallel to ensure the balance and stability of the bracket 12 during movement. The intermediate structural member 122 and the bottom structural member 123 are arranged vertically, providing the necessary strength and support for the entire bracket 12, preventing deformation or damage due to uneven force. The top structural member 121 faces the outside of the hollow portion of the base 11. The top structural member 121 is connected to the piston block 112 and is responsible for adjusting the position of the bracket 12 through the action of the piston block 112. The middle structural member 122 serves to connect the top structural member 121 and the bottom structural member 123, thereby enhancing the stability and rigidity of the overall structure. The bottom structural member 123 faces the inside of the hollow portion of the base 11. The bottom structural member 123 is connected to the support plate 14 and directly participates in supporting 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. The support plate 14 and the bottom structural member 123 are both 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 also 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. The bracket 12 is also provided with a piston channel 124. One end of the piston channel 124 passes through the top structural member 121 and connects to the rodless cavity 114. 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, and reaches the bottom structural member 123, and finally connects to the piston rod 141 located on the outside of the support plate 14. When the base 11 and the bracket 12 are in a sliding connection, the bracket 12 is moved 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 cavity 113 is in a conducting state, the position of the bracket 12 can be adjusted by moving the piston block 112, but the support plate 14 remains fixed; at the same time, the position of the bracket 12 can be adjusted separately without changing the position of the support plate 14, so as to accurately control the size of the bracket 13.

[0042] The immobility of pallet 14 means that the PCB placed on it will not be subjected to unnecessary displacement or vibration due to the movement of pallet 14 during the entire adjustment process, helping to ensure the stability and positional accuracy of the PCB during processing. Since only bracket 12 needs to be moved, rather than the entire pallet 14, more precise adjustments can be made, avoiding the problems of over-adjustment or lack of precision caused by overall movement. The immobility of pallet 14 reduces the risk of scratches or other physical damage to the PCB surface caused by movement; this is particularly important for ultra-thin or particularly sensitive PCBs.

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

[0044] The bracket 12 on the base 11 includes a first bracket 16 and a second bracket 17 arranged adjacent to each other, and an end angle plate 15 is arranged between the first bracket 16 and the second bracket 17, and the end angle plate 15 is composed of a first structural member in contact with the first bracket 16 and a second structural member in contact with the second bracket 17, the first structural member is perpendicular to the first bracket 16, and the second structural member is perpendicular to the second bracket 17; the first bracket 16 and the second bracket 17 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, and the fixing parts and the sliding parts cooperate to realize sliding adjustment between the end angle plate 15 and the first bracket 16 and the second bracket 17; the fixing parts and the sliding parts can be slide rails and slide bars. Specifically, through the sliding adjustment mechanism between the end angle plate 15 and the bracket 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, which helps to maintain the flatness and stability of the PCB.

[0045] At least one of the brackets 12 on the base 11 has a material extraction groove formed thereon, and the material extraction groove is connected to the bracket 13. The depth of the material extraction groove is greater than the depth of the bracket 13, so that the PCB can be more conveniently removed from the bracket 13 using tools or other methods without causing damage to the PCB.

[0046] See also Figure 1 、 Figure 2 The conveying device includes a pallet 2 and a carrier 3. The carrier 3 can be the carrier vehicle shown in the accompanying drawings and can be the horizontal line device mentioned in the background technology. The pallet 2 is used to place the jig 1, and the carrier 3 is used to transport the pallet 2. A placement groove 21 is provided on the pallet 2. The inner side of the placement groove 21 is hollowed out. The placement groove 21 is used to place the jig 1. The pallet 2 is provided with a positioning hole 22 and a direction identification hole 23 to facilitate the fixation of the pallet 2 on the carrier 3, ensuring that the pallet 2 can be accurately fixed on the carrier 3 to prevent displacement or incorrect installation during transportation. The top surface of the pallet 2 is provided with a vertical rod 24 to provide a support point when stacked with other pallets 2. The back of the pallet 2 is provided with a limiting hole at the corresponding position of the vertical rod 24. When multiple pallets 2 are stacked, the vertical rod 24 is inserted into the limiting hole to ensure stacking stability and safety. The vertical rod 24 and the limiting hole cooperate to achieve the stacking of the pallets 2 on the carrier 3.

[0047] Example 2

[0048] A method for using a conveying device for producing packaged sensor LEDs, using the conveying device described in Example 1, is as follows:

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

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

[0051] S3: Secure pallet 2 to carrier 3: Place pallet 2 with jig 1 (including bracket 12 with PCB placed on it) and secure it accurately to carrier 3 using positioning holes 22 and orientation holes 23 on pallet 2. This step ensures that pallet 2 will not be displaced or incorrectly installed during transportation.

[0052] S4 Stacking Pallets 2: Multiple pallets 2 loaded with jigs 1 can be stacked using the vertical bars 24 on the top of the pallet 2 and the corresponding stopper holes on the back. This method not only improves space utilization but also facilitates logistics management for large-scale production.

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

[0054] Furthermore, as is common knowledge in the industry, the aforementioned structural members are collectively referred to as individual components within a single part. The concepts of rod chamber 113 and rodless chamber 114 originate from hydraulic transmission. In this invention, the piston chamber 111 on one side of the top structural member 121 is the rod chamber 113, while the opposite side is the rodless chamber 114. This is common knowledge, so the principles and structure will not be elaborated upon.

[0055] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement 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 printed circuit boards, 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 provided on the base. The bracket is arranged in an annular shape in the hollow part of the base. The annular bracket forms a bracket, and the bracket is used to place the printed circuit board. A piston chamber is provided on the base, and a piston block is provided 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 airtight, and an air hole is provided on the rod chamber; by controlling the conduction of the air hole, the switching of the rod chamber between the closed state and the conducting state 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 conducting state, the bracket and the base are slidingly connected; the switching between the fixed connection and the sliding connection between the base and the bracket realizes the control and fixation of the bracket size; 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. The control member is used to conduct the air hole, thereby controlling the switching of the rod cavity between the closed state and the conducting state.

2. The conveying device according to claim 1, characterized in that: The jig includes a support plate located at the bottom of the bracket; 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, and the middle structural member and the bottom structural member are arranged vertically; The top structural member faces the outside of the hollow portion of the base, and the top structural member is connected to the piston block; the bottom structural member faces the inside of the hollow portion of the base, and the bottom structural member is connected to the support plate; The top plane of the supporting plate and the top plane of the bottom structural member are on the same horizontal plane, and both the supporting plate and the bottom structural member are used to support the printed circuit board.

3. The conveying device according to claim 2, characterized in that: A piston rod is provided 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 cavity 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.

4. The conveying device according to claim 3, 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. The air holes for controlling the fixed bracket and the sliding bracket are fixed valves and sliding valves respectively. The fixed valve is an air hole in a sealed state, and the sliding valve is an air hole in a conductive 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.

5. The conveying device according to claim 4, 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 provided 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; The first bracket and the second bracket are both provided with fixing parts, and the first structural part and the second structural part 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.

6. The conveying device according to any one of claims 2 to 5, characterized in that: At least one bracket on the base has a material extraction slot formed thereon, the material extraction slot is connected to the bracket, and the depth of the material extraction slot is greater than the depth of the bracket, so as to facilitate the removal of the printed circuit board from the bracket.

7. The conveying device according to claim 6, characterized in that: The conveying device includes a pallet and a carrier, 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; The top surface of the tray is provided with a vertical rod, and the back surface of the tray is provided with a limiting hole at a corresponding position of the vertical rod. The vertical rod and the limiting hole cooperate to realize the stacking of the trays on the carrier.

8. A method for using a conveying device for producing packaged sensor LEDs, characterized by: The conveying device according to claim 7 is used, and the method of use is as follows: S1. Open the air holes through the control unit, adjust the position of the bracket according to the size of the printed circuit board, ensure that the bracket size 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 secure it to the carrier using the positioning holes and direction identification holes to ensure it does not move during transportation. S4. Use the vertical pole and limit hole system to stack multiple pallets containing jigs to facilitate efficient use of space for transportation; S5. After the production process is completed, the printed circuit board is easily taken out through the material chute.

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