SMT (surface mount technology) device and method for LED (light-emitting diode) and PCB (printed circuit board) surface mounting

Abstract

The invention relates to the technical field of electrical board processing, in particular to an SMT (Surface Mount Technology) mounting device and method for LED (Light Emitting Diode) and PCB (Printed Circuit Board) mounting, comprising an assembly frame, an XYZ three-axis moving platform fixedly mounted at the top of the assembly frame, and a side edge assembly frame arranged on one side of the assembly frame, two assembly top plates are fixedly mounted at the top of the side edge assembly frame; a sliding seat is fixedly installed at the bottom of the side edge assembling frame, the movable strip is driven to move through rotation of the lead screw, the fixed strip and the movable strip are made to be close to each other, control over the rotating speed and efficiency of the patch belt wheel is achieved, it is guaranteed that the patch belt wheel cannot continue to rotate due to inertia, and on an SMT patch production line, the belt wheel is usually used for conveying the patch belt wheel to move; if the belt wheel rotates due to inertia, the position of the patch belt wheel is slightly shifted in the conveying process, the position of the patch element after stopping is influenced, the accurate positioning of the patch absorbing structure is influenced, and the patch precision and accuracy are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical board processing, in particular to an SMT patch device and method for LED and PCB board patch. Background Art

[0002] LEDs are usually mounted on PCBs using SMT. This method involves mounting LED chips directly on the surface of the PCB and making electrical connections through pads and solder. Its advantages are high production efficiency and the ability to achieve automated large-scale production. SMT technology can quickly and accurately mount a large number of LED chips on PCBs, greatly increasing production speed.

[0003] In the SMT patch process, accurate position control is the key. When the patch wheel rotates due to inertia, it will cause deviations in the patch position. For example, when attaching tiny electronic components to a PCB (printed circuit board), the inertial rotation of the patch wheel may cause the placement of the component to exceed the allowable tolerance range. This will cause serious quality problems for high-precision electronic products such as smartphone motherboards, computer graphics cards, etc., because even a small position deviation may cause the components to fail to connect normally or transmit signals. In addition to position deviation, inertial rotation may also cause angular deviation of the patch. Some SMT patch components (such as chips) have specific pin arrangement and installation direction requirements. If the patch wheel rotates due to inertia, the patch may rotate at an angle when placed on the PCB, causing the pins to fail to accurately dock with the corresponding pads, resulting in poor welding and affecting the function and reliability of the product. Summary of the invention

[0004] The object of the present invention is to provide a SMT chip mounting device and method for mounting LEDs on PCB boards, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: an SMT patch device for LED and PCB board patch, comprising an assembly frame, an XYZ three-axis moving platform fixedly installed on the top of the assembly frame, and a side assembly frame arranged on one side of the assembly frame, wherein two assembly top plates are fixedly installed on the top of the side assembly frame, a slidable seat is fixedly installed on the bottom of the side assembly frame, a driving motor is arranged inside the side assembly frame, a driving roller is fixedly installed on the output shaft of the driving motor, a transmission belt located between the two assembly top plates is rotatably connected to the driving roller, a plurality of patch assembly frames equidistantly arranged are arranged between the side assembly frames, a trapezoidal groove is opened at the position of the patch assembly frame corresponding to the position of the patch assembly frame, a rotatable pressing plate is rotatably connected to the assembly top plate, and the rotatable pressing plate is movably engaged with the The cam is provided with a plurality of guide wheels, each of which is provided with a plurality of guide wheels, and the plurality of guide wheels are provided with a plurality of guide wheels respectively.

[0006] Preferably, the rotatable guide plate is horizontally arranged in the trapezoidal groove.

[0007] Preferably, the rotatable pressure plate is adapted to the shape of the trapezoidal groove.

[0008] Preferably, the bottom support frame and the patch assembly frame form a semi-enclosed structure corresponding to the shape of the patch pulley.

[0009] Preferably, a fixing strip is fixedly mounted on the patch assembly frame, a side panel is fixedly mounted on the patch assembly frame at a position corresponding to the fixing strip, a movable strip is slidably connected within the structure composed of the side panel and the patch assembly frame, a transverse plate is also fixedly mounted on the patch assembly frame, a screw rod is threadedly connected within the transverse plate, one end of the screw rod is rotatably connected to the movable strip, and the fixed strip and movable strip structures are respectively arranged on both sides of the patch pulley.

[0010] Preferably, the fixed strip and the movable strip are arranged along the radial direction of the patch pulley.

[0011] Preferably, long blocking strips are fixedly mounted on the tops of the two assembly top plates near the sides.

[0012] Preferably, an insertable part is fixedly mounted on the side of the side assembly frame, a handle is fixedly mounted on the insertable part, an inserted part is fixedly mounted on the side of the assembly frame, an insertable spring piece is fixedly mounted on a side of the insertable part close to the inserted part, and the insertable spring piece is movably plugged into the inserted part.

[0013] Preferably, an electric push rod is fixedly installed on the XYZ three-axis moving platform, a diagonal support bracket is fixedly installed on the bottom end of the piston rod of the electric push rod, an air flow disk is fixedly installed on the bottom end of the diagonal support bracket, a connecting ring is provided at the bottom of the air flow disk, an air outlet ring is provided at the bottom of the connecting ring, an air outlet ring is provided in the air outlet ring, an air pipe is fixedly installed in the connecting ring, the air flow disk and the air pipe are connected, an adsorption head is provided in the structure composed of the connecting ring and the air outlet ring, a sieve plate is fixedly installed on the bottom of the adsorption head, air supply pipes are provided on the top of the adsorption head and the air flow disk, an air pump is fixedly installed on the electric push rod, and the air pipe of the air pump is connected to the air supply pipe.

[0014] A method for using an SMT patch device for patching LEDs and PCB boards, S1: an assembly rack and a side assembly rack component structure can be disassembled, and an auxiliary patch pulley is placed in the bottom support rack and the patch assembly rack component structure.

[0015] S2: The rotatable pressing plate rotates around the assembly top plate, and then the rotatable guide plate rotates around the assembly top plate. The patch pulley is placed in the structure composed of the patch assembly frame and the bottom support frame. The telescopic column and the convex block are re-popped out and engaged in the middle position of the patch pulley. The fixed bar and the movable bar are close to each other. The friction roller is driven to rotate by the output shaft of the micro motor to realize the movement of the SMT patch.

[0016] S3: The XYZ three-axis mobile platform drives the electric push rod and the structure on the electric push rod to move. The air pump generates airflow, which enters the air pipe and the air relief groove through the air flow disk. The airflow discharged through the air relief groove forms a ring-shaped stable belt. The adsorption head and the sieve plate form a structure to absorb the SMT patch. After moving to the specified position, the SMT patch falls onto the LED and PCB board.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The movable bar is driven to move by rotating the screw rod, so that the fixed bar and the movable bar are close to each other, so as to control the rotation speed and efficiency of the patch pulley and ensure that the patch pulley will not continue to rotate due to inertia. On the SMT patch production line, the pulley is usually used to transport the patch pulley to move to realize the replenishment operation. If the pulley rotates due to inertia, it will cause a slight deviation in the position of the patch pulley during the conveying process, affecting the position of the patch component after it stops, thereby affecting the precise positioning of the patch structure and improving the precision and accuracy of the patch.

[0018] 2. The air pump generates airflow, which enables the airflow to move in the air pipe. The airflow moves in the air pipe and enters the air pipe and the air relief groove through the airflow disk. The airflow discharged through the air relief groove forms a ring-shaped stable belt to ensure the stability of the SMT patch in the ring structure. In the SMT patch process, the accuracy of the patch is very important. The ring-shaped airflow belt can accurately control the position of the SMT patch. When the patch is placed on the airflow belt, the stable pressure of the airflow can keep the patch in a fixed position and will not be displaced due to slight external vibrations or slight shaking of the machine itself. SMT patch components are usually small and fragile and are easily physically damaged. The ring-shaped airflow belt fixes the patch through a soft airflow, avoiding the damage such as extrusion and collision that may be caused by traditional mechanical fixing methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the present invention.

[0020] Figure 2 It is a side view structural schematic diagram of the present invention.

[0021] Figure 3 It is a schematic diagram of the top structure of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure at the corresponding position of the insertable part of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the corresponding position of the air pump of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the corresponding position of the electric push rod of the present invention.

[0025] Figure 7 It is a schematic diagram of the structure at the corresponding position of the gas transmission pipe of the present invention.

[0026] Figure 8 It is a schematic diagram of the structure at the corresponding position of the air outlet ring of the present invention.

[0027] Fig. 9 It is a schematic diagram of the structure of the transmission belt at the corresponding position of the present invention.

[0028] Fig.10 It is a schematic diagram of the structure at the corresponding position of the driving motor of the present invention.

[0029] Fig.11 It is a structural schematic diagram of the corresponding position of the bottom support frame of the present invention.

[0030] Fig.12 It is a structural schematic diagram of the corresponding position of the movable bar of the present invention.

[0031] Fig.13 It is a schematic diagram of the structure at the corresponding position of the patch pulley of the present invention.

[0032] Fig.14 It is a schematic diagram of the structure at the corresponding position of the bump of the present invention.

[0033] In the figure: 1, assembly frame; 2, XYZ three-axis moving platform; 3, side assembly frame; 4, assembly top plate; 401, trapezoidal groove; 5, slidable seat; 6, driving motor; 7, driving roller; 8, transmission belt; 9, patch assembly frame; 10, rotatable pressure plate; 11, rotatable guide plate; 12, limit strip; 13, bottom support frame; 14, patch pulley; 15, assembly set; 16, internal fixed seat; 17, spring; 18, telescopic column; 19, bump; 20, micro Motor; 21. Friction roller; 22. Fixed bar; 23. Side panel; 24. Movable bar; 25. Cross panel; 26. Screw rod; 27. Long blocking bar; 28. Insertable part; 29. ​​Handle; 30. Inserted part; 31. Insertable spring piece; 32. Electric push rod; 33. Diagonal support frame; 34. Air flow disk; 35. Connecting ring; 36. Air outlet ring; 3601. Air release groove; 37. Air pipe; 38. Adsorption head; 39. Sieve plate; 40. Air pipe; 41. Air pump. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 14The present invention provides a technical solution: an SMT patch device for LED and PCB board patch, comprising an assembly frame 1, an XYZ three-axis moving platform 2 fixedly installed on the top of the assembly frame 1, and a side assembly frame 3 arranged on one side of the assembly frame 1, the XYZ three-axis moving platform 2 is used to drive the structure of adsorbing and blowing the patch to move, the assembly frame 1 and the side assembly frame 3 form a structure that can be assembled, and the connection between the auxiliary assembly frame 1 and the side assembly frame 3 is auxiliary, two assembly top plates 4 are fixedly installed on the top of the side assembly frame 3, the assembly top plates 4 display multiple patches, facilitate the removal of the patches, and improve the convenience of patch extraction, a slidable seat 5 is fixedly installed on the bottom of the side assembly frame 3, and a plurality of pulleys are arranged at the bottom of the slidable seat 5, so as to ensure the side assembly frame 3 The side assembly frame 3 is provided with a driving motor 6, and a driving roller 7 is fixedly installed on the output shaft of the driving motor 6. The driving roller 7 is externally connected to a transmission belt 8 located between two assembly top plates 4. The driving motor 6 drives the driving roller 7 to rotate, thereby driving the transmission belt 8 to move, and the LED and the PCB board are placed on the transmission belt 8, and the LED and the PCB board are driven to move by the transmission belt 8, so as to facilitate the placement of SMT patches on the LED and the PCB board. A plurality of equidistantly arranged patch assembly frames 9 are arranged between the side assembly frames 3, and the patch assembly frames 9 are used for placing patch pulleys 14. A trapezoidal groove 401 is opened at a position corresponding to the patch assembly frame 9 on the assembly top plate 4, and the part of the patch pulley 14 pulled out is in the trapezoidal groove 401. 01, so as to realize the conveying of SMT patches, a rotatable pressing plate 10 is rotatably connected on the assembly top plate 4, and the rotatable pressing plate 10 is movably engaged in the trapezoidal groove 401. The rotatable pressing plate 10 and the rotatable guide plate 11 are combined to form a structure located on both sides of the extraction part of the patch pulley 14, and the movement of the extraction part of the auxiliary patch pulley 14 is rotatably connected in the assembly top plate 4. A limiting strip 12 located below the rotatable guide plate 11 is fixedly installed in the assembly top plate 4, and the rotatable guide plate 11 can be rotated and lifted, and the auxiliary patch pulley 14 is installed in the structure composed of the bottom support frame 13 and the patch assembly frame 9. The limiting strip 12 can support the rotatable guide plate 11 and the rotation of the rotatable guide plate 11 The angle is limited to ensure that the rotatable guide plate 11 is level after stopping. A bottom support frame 13 is fixedly installed in the patch assembly frame 9. The upper surface of the bottom support frame 13 is adapted to the shape of the patch pulley 14 to ensure the installation effect of the patch pulley 14. The patch pulley 14 is arranged in the structure composed of the bottom support frame 13 and the patch assembly frame 9. An assembly sleeve 15 is fixedly installed at the position corresponding to the axis of the patch pulley 14 on the patch assembly frame 9. An internal fixed seat 16 is fixedly installed in the assembly sleeve 15. A spring 17 located in the patch pulley 14 is fixedly installed at the outer end of the internal fixed seat 16. A structure composed of a telescopic column 18 and a protrusion 19 is fixedly installed at the end of the spring 17 away from the assembly sleeve 15. The protrusion 19 is movably engaged at the center of the patch pulley 14.The structure composed of the telescopic column 18 and the protrusion 19 is telescopic in the assembly sleeve 15, and the deformation of the spring 17 assists the telescopic column 18 and the protrusion 19 to telescope. Through the telescopic column 18 and the protrusion 19, it is ensured that after the patch pulley 14 is installed in the structure composed of the bottom support frame 13 and the patch assembly frame 9, the telescopic column 18 and the protrusion 19 can be engaged on the patch pulley 14 and fix the patch pulley 14. A micro motor 20 is fixedly installed in the assembly top plate 4, and a friction roller 21 is fixedly installed on the output shaft of the micro motor 20. The friction roller 21 contacts the extraction part of the patch pulley 14, and the micro motor 20 drives the friction roller 21 to rotate. The rotation of the friction roller 21 drives the extraction part of the patch pulley 14 to move between the friction roller 21 and the rotatable pressing plate 10, ensuring the stable movement of the extraction part of the patch pulley 14.

[0036] The rotatable guide plate 11 is horizontally arranged in the trapezoidal groove 401. The horizontal arrangement of the rotatable guide plate 11 ensures the horizontal movement of the withdrawn part of the patch pulley 14, thereby ensuring the horizontal placement of the SMT patch and facilitating the removal of the SMT patch.

[0037] The rotatable pressing plate 10 is adapted to the shape of the trapezoidal groove 401 , ensuring the pressure effect of the rotatable pressing plate 10 on the withdrawn part of the patch pulley 14 , thereby ensuring the effect of driving the withdrawn part of the patch pulley 14 .

[0038] The bottom support frame 13 and the patch assembly frame 9 form a semi-enclosed structure corresponding to the shape of the patch pulley 14 to ensure the placement effect of the patch pulley 14.

[0039] A fixed strip 22 is fixedly installed on the patch assembly frame 9, and a side plate 23 is fixedly installed on the patch assembly frame 9 at a position corresponding to the fixed strip 22. A movable strip 24 is slidably connected in the structure composed of the side plate 23 and the patch assembly frame 9. A cross plate 25 is also fixedly installed on the patch assembly frame 9. A screw rod 26 is threadedly connected to the cross plate 25. One end of the screw rod 26 is rotatably connected to the movable strip 24. The fixed strip 22 and the movable strip 24 constitute a structure respectively arranged on both sides of the patch pulley 14. The fixed strip 22 supports the patch pulley 14 from one side, and the rotation of the screw rod 26 drives the movable strip 24 threadedly connected thereto to move. The movable strip 24 and the fixed strip 22 support and fix the patch pulley 14 from both sides to ensure the stopping effect of the patch pulley 14 after movement.

[0040] The fixed bar 22 and the movable bar 24 are arranged along the radial direction of the patch pulley 14 to ensure the contact surface between the fixed bar 22 and the side plate 23 and the side surface of the patch pulley 14, thereby ensuring the movement stability of the patch pulley 14 during movement.

[0041] Long blocking bars 27 are fixedly installed near the tops of the two assembly top plates 4. The long blocking bars 27 limit the position of the PVB board to ensure the movement stability of the PVB board.

[0042] An insertable portion 28 is fixedly mounted on the side of the side assembly frame 3, and a handle 29 is fixedly mounted on the insertable portion 28. An inserted portion 30 is fixedly mounted on the side of the assembly frame 1. An insertable spring piece 31 is fixedly mounted on the side of the insertable portion 28 close to the inserted portion 30. The insertable spring piece 31 is movably inserted into the inserted portion 30. The insertable spring piece 31 is a deformable teardrop-shaped piece. After the side assembly frame 3 and the assembly frame 1 are assembled, the insertable spring piece 31 is movably inserted into the inserted portion 30 to ensure the connection between the assembly frame 1 and the side assembly frame 3.

[0043] An electric push rod 32 is fixedly installed on the XYZ three-axis mobile platform 2, an oblique support frame 33 is fixedly installed at the bottom end of the piston rod of the electric push rod 32, an air flow disk 34 is fixedly installed at the bottom end of the oblique support frame 33, a connecting ring 35 is arranged at the bottom of the air flow disk 34, an air outlet ring 36 is arranged at the bottom of the connecting ring 35, an air discharge groove 3601 is opened in the air outlet ring 36, an air pipe 37 is fixedly installed in the connecting ring 35, the air flow disk 34 and the air pipe 37 are connected, and an adsorption head 38 is arranged in the structure composed of the connecting ring 35 and the air outlet ring 36 A sieve plate 39 is fixedly installed at the bottom of the adsorption head 38, and an air pipe 40 is provided on the top of the adsorption head 38 and the air flow disk 34. An air pump 41 is fixedly installed on the electric push rod 32. The air pipe of the air pump 41 is connected with the air pipe 40. The air pump 41 generates exhaust airflow and inhaled airflow when it works, thereby ensuring the stability of the air outlet and air inlet structure of the air relief groove 3601 and the adsorption head 38. The air outlet of the air relief groove 3601 forms an annular airflow, ensuring that the SMT patch is located in the middle of the annular airflow, thereby ensuring the stability of the SMT patch.

[0044] A method for using an SMT patch device for patching LEDs and PCB boards, S1: the assembly frame 1 and the side assembly frame 3 can be disassembled, and the auxiliary patch pulley 14 is placed in the structure composed of the bottom support frame 13 and the patch assembly frame 9.

[0045] S2: The rotatable pressing plate 10 rotates around the assembly top plate 4, and then the rotatable guide plate 11 rotates around the assembly top plate 4, the patch pulley 14 is placed in the structure composed of the patch assembly frame 9 and the bottom support frame 13, the telescopic column 18 and the protrusion 19 form a re-pop-out and engage in the middle position of the patch pulley 14, the fixed bar 22 and the movable bar 24 approach each other, and the friction roller 21 is driven to rotate by the output shaft of the micro motor 20 to realize the movement of the SMT patch.

[0046] S3: The XYZ three-axis mobile platform 2 drives the electric push rod 32 and the structure on the electric push rod 32 to move. The air pump 41 generates airflow, which enters the air pipe 37 and the air relief groove 3601 through the airflow disk 34. The airflow discharged through the air relief groove 3601 forms an annular stable belt. The adsorption head 38 and the sieve plate 39 form a structure to absorb the SMT patch. After moving to the specified position, the SMT patch falls onto the LED and the PCB board.

[0047] Working principle: The first step: the assembly frame 1 and the side assembly frame 3 can be disassembled. When the assembly frame 1 and the side assembly frame 3 are disassembled, the handle 29 is pulled, and the insertable spring piece 31 is deformed and pulled out from the inserted part 30. After the insertable spring piece 31 is deformed and pulled out from the insertable spring piece 31, the assembly frame 1 and the side assembly frame 3 are disassembled, which facilitates the placement of the patch pulley 14 in the structure composed of the bottom support frame 13 and the patch assembly frame 9.

[0048] The second step: the rotatable pressing plate 10 is rotated around the assembly top plate 4, and then the rotatable guide plate 11 is rotated around the assembly top plate 4 to give the patch pulley 14 sufficient placement hole space, and the patch pulley 14 is placed in the structure composed of the patch assembly frame 9 and the bottom support frame 13. After the patch pulley 14 is placed in the structure composed of the patch assembly frame 9 and the bottom support frame 13, the center position of the patch pulley 14 contacts the protrusion 19, and the center position of the patch pulley 14 corresponds to the telescopic column 18 and the protrusion 19 structure. The telescopic column 18 and the protrusion 19 structure is retracted into the assembly sleeve 15, and the spring 17 is pressurized. After the patch pulley 14 is placed in place, the telescopic column 18 and the protrusion 19 re-pop out and engage in the middle position of the patch pulley 14 to ensure that To ensure the placement stability of the patch pulley 14, the pulled-out part of the patch pulley 14 is placed along the lowered rotatable guide plate 11, and the pulled-out part of the patch pulley 14 is placed on the upper surface of the rotatable guide plate 11, and then the pulled-out part of the patch pulley 14 is placed between the friction roller 21 and the rotatable pressing plate 10, and the rotatable pressing plate 10 applies pressure to the pulled-out part of the patch pulley 14, and then the movable bar 24 is driven to move by rotating the screw rod 26, so that the fixed bar 22 and the movable bar 24 are close to each other, so as to control the rotation speed and efficiency of the patch pulley 14, and ensure that the patch pulley 14 will not continue to rotate due to inertia, and the friction roller 21 is driven to rotate by the output shaft of the micro motor 20, and the friction roller 21 drives the pulled-out part of the patch pulley 14 to move, so as to realize the movement of the SMT patch.

[0049] Step 3: The XYZ three-axis mobile platform 2 drives the electric push rod 32 and the structure on the electric push rod 32 to move, and the air pump 41 works to generate airflow, thereby realizing the movement of the airflow in the air pipe 40. The airflow moves in the air pipe 40 and enters the adsorption head 38, and also enters the air pipe 37 and the air relief groove 3601 through the air flow disk 34. The airflow discharged through the air relief groove 3601 forms an annular stable belt to ensure the stability of the SMT patch in the annular structure. The adsorption head 38 and the sieve plate 39 form a structure to absorb the SMT patch. After moving to the specified position, the SMT patch falls onto the LED and PCB board.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A SMT patch device for LED and PCB patch, comprising an assembly frame (1), an XYZ three-axis moving platform (2) fixedly mounted on the top of the assembly frame (1), and a side assembly frame (3) arranged on one side of the assembly frame (1), characterized in that: Two assembly top plates (4) are fixedly mounted on the top of the side assembly frame (3), a slidable seat (5) is fixedly mounted on the bottom of the side assembly frame (3), a driving motor (6) is arranged inside the side assembly frame (3), a driving roller (7) is fixedly mounted on the output shaft of the driving motor (6), a transmission belt (8) located between the two assembly top plates (4) is rotatably connected to the driving roller (7), a plurality of patch assembly frames (9) arranged equidistantly are arranged between the side assembly frames (3), a trapezoidal groove (401) is provided on the assembly top plate (4) at positions corresponding to the patch assembly frames (9), a rotatable pressing plate (10) is rotatably connected to the assembly top plate (4), the rotatable pressing plate (10) is movably engaged in the trapezoidal groove (401), a rotatable guide plate (11) is rotatably connected to the assembly top plate (4), and a limiting strip (20) located below the rotatable guide plate (11) is fixedly mounted inside the assembly top plate (4). 12), a bottom support frame (13) is fixedly installed in the patch assembly frame (9), a patch pulley (14) is arranged in the structure composed of the bottom support frame (13) and the patch assembly frame (9), an assembly sleeve (15) is fixedly installed at a position corresponding to the axis of the patch pulley (14) on the patch assembly frame (9), an inner fixing seat (16) is fixedly installed in the assembly sleeve (15), and a fixing seat (16) is fixedly installed at an outer end of the inner fixing seat (16) located at the patch pulley (14). A spring (17) is installed inside the assembly sleeve (15), and a structure consisting of a telescopic column (18) and a protrusion (19) is fixedly installed at one end of the spring (17) away from the assembly sleeve (15), and the protrusion (19) is movably engaged at the center position of the patch pulley (14). A micro motor (20) is fixedly installed inside the assembly top plate (4), and a friction roller (21) is fixedly installed on the output shaft of the micro motor (20), and the friction roller (21) is in contact with the extracted part of the patch pulley (14).

2. The SMT patch device for LED and PCB patch according to claim 1, characterized in that: The rotatable guide plate (11) is horizontally arranged in the trapezoidal groove (401).

3. The SMT patch device for LED and PCB patch according to claim 2, characterized in that: The rotatable pressing plate (10) is adapted to the shape of the trapezoidal groove (401).

4. The SMT patch device for LED and PCB patch according to claim 3, characterized in that: The bottom support frame (13) and the patch assembly frame (9) form a semi-enclosed structure corresponding to the shape of the patch pulley (14).

5. The SMT patch device for LED and PCB patch according to claim 4, characterized in that: A fixed strip (22) is fixedly mounted on the patch assembly frame (9), a side plate (23) is fixedly mounted on the patch assembly frame (9) at a position corresponding to the fixed strip (22), a movable strip (24) is slidably connected within the structure formed by the side plate (23) and the patch assembly frame (9), a transverse plate (25) is also fixedly mounted on the patch assembly frame (9), a screw rod (26) is internally threadedly connected to the transverse plate (25), one end of the screw rod (26) is rotatably connected to the movable strip (24), and the fixed strip (22) and the movable strip (24) are respectively arranged on both sides of the patch pulley (14).

6. The SMT patch device for LED and PCB patch according to claim 5, characterized in that: The fixed strip (22) and the movable strip (24) are arranged along the radial direction of the patch pulley (14).

7. The SMT patch device for LED and PCB patch according to claim 6, characterized in that: Long blocking strips (27) are fixedly mounted on the tops of the two assembly top plates (4) near the sides.

8. The SMT patch device for LED and PCB patch according to claim 7, characterized in that: An insertable portion (28) is fixedly mounted on the side of the side assembly frame (3), a handle (29) is fixedly mounted on the insertable portion (28), an inserted portion (30) is fixedly mounted on the side of the assembly frame (1), an insertable spring sheet (31) is fixedly mounted on a side of the insertable portion (28) close to the inserted portion (30), and the insertable spring sheet (31) is movably plugged into the inserted portion (30).

9. The SMT patch device for LED and PCB patch according to claim 8, characterized in that: An electric push rod (32) is fixedly mounted on the XYZ three-axis mobile platform (2); an inclined support frame (33) is fixedly mounted on the bottom end of the piston rod of the electric push rod (32); an air flow disk (34) is fixedly mounted on the bottom end of the inclined support frame (33); a connecting ring (35) is arranged at the bottom of the air flow disk (34); an air outlet ring (36) is arranged at the bottom of the connecting ring (35); an air discharge groove (3601) is provided in the air outlet ring (36); and a connecting ring (35) is fixedly mounted in the connecting ring (35). An air pipe (37) is installed, the air flow disk (34) and the air pipe (37) are connected, an adsorption head (38) is arranged in the structure composed of the connecting ring (35) and the air outlet ring (36), a sieve plate (39) is fixedly installed at the bottom of the adsorption head (38), and an air supply pipe (40) is arranged on the top of the adsorption head (38) and the air flow disk (34), and an air pump (41) is fixedly installed on the electric push rod (32), and the air pipe of the air pump (41) is connected to the air supply pipe (40).

10. A method for using an SMT patch device for LED and PCB board patch, used for the SMT patch device for LED and PCB board patch according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: The structure composed of the assembly frame (1) and the side assembly frame (3) can be disassembled, and the auxiliary patch pulley (14) is placed in the structure composed of the bottom support frame (13) and the patch assembly frame (9). S2: The rotatable pressing plate (10) is rotated around the assembly top plate (4), and then the rotatable guide plate (11) is rotated around the assembly top plate (4). The patch pulley (14) is placed in a structure composed of a patch assembly frame (9) and a bottom support frame (13). The telescopic column (18) and the protrusion (19) are re-popped out and engaged in the middle position of the patch pulley (14). The fixed bar (22) and the movable bar (24) are close to each other. The friction roller (21) is driven to rotate by the output shaft of the micro motor (20), thereby realizing the movement of the SMT patch. S3: The XYZ three-axis moving platform (2) drives the electric push rod (32) and the structure on the electric push rod (32) to move, and the air pump (41) generates airflow, which enters the air pipe (37) and the air discharge groove (3601) through the air flow plate (34). The airflow discharged through the air discharge groove (3601) forms a ring-shaped stable belt. The adsorption head (38) and the sieve plate (39) form a structure to absorb the SMT patch. After moving to the specified position, the SMT patch falls onto the LED and the PCB board.

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