Automatic PCB (printed circuit board) feeding machine

Abstract

The invention discloses an automatic PCB (printed circuit board) conveying machine which is characterized in that a plurality of inserting plates are arranged on opposite sides of two clamping plates at intervals along the length direction, and an inserting groove is formed between every two adjacent inserting plates; first fixing plates are arranged on the upper portions of the sides, opposite to the containing table, of the straight plates and the lower portions of the sides, opposite to the containing table, of the straight plates, an arc-shaped frame is arranged between the transverse moving plates and the clamping plates, and a groove is formed in the side, close to the connecting frame, of the top of the containing table and located between the two transverse moving plates; a first air cylinder is arranged on one side of the groove and on the placing table, a sliding plate capable of moving up and down along the sliding frame is arranged at the movable end of the first air cylinder, and a supporting plate provided with an electromagnet is fixedly arranged on the side, opposite to the first air cylinder, of the sliding frame. According to the automatic PCB conveying machine, the position precision of the PCB is improved, the falling risk of the PCB in the transferring process is greatly reduced, the conveying efficiency of materials can be improved, and therefore the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of PCB circuit board processing, and in particular to an automatic PCB circuit board feeding machine. Background Art

[0002] PCB circuit board automatic feeder is mainly used to realize automatic transmission and positioning of circuit boards during PCB production process. During PCB production process, circuit boards need to be transferred and positioned many times in order to complete different production processes, such as solder paste printing, component mounting, reflow soldering, etc. The automatic board feeding device effectively improves PCB production efficiency and reduces manual operation, but it needs regular maintenance and inspection to ensure the smooth progress of the production process.

[0003] After searching, the patent publication number CN216104793U discloses "a circuit board feeding machine", including a conveying platform, a material taking manipulator and a board placing platform located on one side of the conveying platform. The conveying platform is provided with a conveying mechanism, and the conveying mechanism is connected to a conveying power mechanism; the conveying platform is provided with a pressing plate mechanism that can move up and down and a positioning mechanism that can move along the width direction of the conveying mechanism. The device allows the staff to place the PCB boards on the board placing platform in batches, and the material taking manipulator automatically absorbs the PCB boards on the board placing platform and places them on the conveying platform. As the number of sheets on the board placing platform decreases, the board placing platform will automatically move up, which is convenient for the material taking manipulator to take and load the materials. Compared with the existing pre-cutting machine, this mechanism can automatically load the pre-cutting machine in large quantities. The anti-sticking plate cylinder installed on the material taking manipulator can impact and vibrate the absorbed PCB boards, so that the remaining sheets bonded to the bottom of the PCB boards fall off. This board loading mechanism replaces the current manual operation method, greatly improves production efficiency and reduces production costs, and can meet the needs of industrialized production.

[0004] After the inspection of the existing PCB circuit board automatic feeding device is completed, it needs to be transported back by a moving device, and then put back into the original place, and moved by the pushing device of the placement table to push the circuit board so that multiple circuit boards are neatly arranged. However, when pushing, the existing pushing device is difficult to ensure that the circuit board is accurately pushed into the specified position. At the same time, there is a certain distance and height difference between the existing moving device and the circuit board placement plate, and there is no connection between different mechanisms, resulting in a very high risk of the circuit board falling. It takes extra time for personnel to pick up and replace the circuit board, resulting in poor continuity in the transmission of the circuit board, which affects production efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic PCB circuit board feeding machine, which not only improves the position accuracy of the circuit board, but also greatly reduces the risk of the circuit board falling during the transfer process, improves the safety of circuit board transfer, is conducive to improving the material transmission efficiency, and thus improves production efficiency.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a PCB circuit board automatic feeding machine, comprising: a connecting frame provided with a first conveyor belt, a placing table provided on one side of the connecting frame, and a bottom plate provided between the placing table and the connecting frame; Two straight plates are symmetrically arranged on the top of the bottom plate, and a lifting plate is arranged between the two straight plates. Two clamping plates are arranged at intervals on the top of the lifting plate. A plurality of plugging plates are arranged at intervals along the length direction on the opposite sides of the two clamping plates, and a slot is formed between two adjacent plugging plates, and the circuit board can be inserted between the two slots; a first fixing plate is arranged on the upper part of the straight plate opposite to the placing table and the lower part opposite to the placing table, and a second cylinder with a push block fixedly installed at a movable end is arranged on the top of the first fixing plate, and the two second cylinders are arranged opposite to each other; Two transverse plates with a second conveyor belt on the top are arranged on the placement table, and an arc frame is arranged between the transverse plate and the clamping plate, a groove is opened between the two transverse plates and on the top of the placement table close to the connecting frame, and a second wedge block is arranged inside the groove, and a first wedge block with a sliding frame on the top is slidably installed on the surface of the second wedge block, a first cylinder is arranged on one side of the groove and on the placement table, and a slide plate that can move up and down along the sliding frame is installed on the movable end of the first cylinder, and a support plate with an electromagnet is fixedly installed on the side of the sliding frame opposite to the first cylinder.

[0007] The further improved scheme in the above technical scheme is as follows: 1. In the above scheme, a third fixing plate is respectively arranged on the opposite sides of the two clamping plates, and a double-headed screw with a rotating member in the middle is rotatably installed between the two third fixing plates, and the two clamping plates are respectively sleeved on both ends of the double-headed screw.

[0008] 2. In the above solution, both ends of the two transverse plates are slidably mounted on an I-shaped plate respectively, and the transverse plates are provided with a fastener that cooperates with the I-shaped plate.

[0009] 3. In the above scheme, a second fixed plate is installed at one end of the transverse plate close to the connecting frame, and a clamping frame is rotatably connected to the second fixed plate, and the clamping frame is fixedly connected to the arc frame on a side opposite to the second fixed plate.

[0010] 4. In the above scheme, the arc frame includes: arc plates spaced apart at upper and lower positions, and a connecting plate that fixes the two arc plates together, and the two arc plates and the connecting plate together form a guide groove, and the side openings of the two guide grooves are arranged opposite to each other.

[0011] 5. In the above solution, a strip plate is provided at one end of the two arc-shaped plates away from the clamping frame.

[0012] 6. In the above solution, when the movable end of the first cylinder is extended, the first wedge block moves up along the inclined surface of the second wedge block.

[0013] 7. In the above scheme, a slide groove is provided on each of the opposite sides of the two straight plates, and a lead screw is rotatably installed inside one of the slide grooves, and a smooth rod is fixedly installed inside the other slide groove. One end of the lifting plate is threadedly connected to the lead screw, and the other end is connected to the smooth rod sliding sleeve.

[0014] 8. In the above scheme, a limit plate is fixedly installed at both ends of the top of the transverse plate, a pulley is rotatably connected between the two limit plates located at the same end, and the second conveyor belt is set between the two pulleys.

[0015] 9. In the above solution, a forward and reverse motor for driving the pulley to rotate is arranged on the outer wall of the limit plate.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The automatic PCB feeding machine of the present invention has a first fixed plate disposed on the upper part of the straight plate opposite to the placing table and on the lower part opposite to the placing table, and a second cylinder with a push block fixedly mounted on a movable end is disposed on the top of the first fixed plate, and the two second cylinders are disposed opposite to each other, and the movable end of the second cylinder pushes out the circuit boards between the slots of the two clamping plates in sequence during the movement of the lifting plate, thereby realizing automatic loading of the circuit boards in sequence and improving the continuity of loading the circuit boards; and a first cylinder is disposed on one side of the groove and on the placing table, and a slide plate capable of moving up and down along the sliding frame is disposed on the movable end of the first cylinder , and a support plate provided with an electromagnet is fixedly installed on the side of the sliding frame opposite to the first cylinder. The first wedge block moves along the inclined surface of the second wedge block by retracting or extending the movable end of the first cylinder, and the electromagnet cooperates with the circuit board magnetically and moves along the arc frame, and is relayed by the second conveyor belt on the placement table. On the basis of realizing the transfer and transmission of the circuit board, the circuit board moves along the arc groove during the forward and reverse transmission process, which greatly reduces the risk of the circuit board falling during the transfer process, improves the safety of the circuit board transfer, and improves the continuity of the circuit board transfer between different mechanisms, which is conducive to improving the transmission efficiency of materials, thereby improving production efficiency.

[0017] 2. The automatic PCB circuit board feeding machine of the present invention has a third fixed plate disposed on the opposite sides of the two clamping plates, and a double-headed screw with a rotating part in the middle is rotatably installed between the two third fixed plates. The two clamping plates are respectively sleeved on the two ends of the double-headed screw, and the distance between the two clamping plates can be adjusted by toggling the rotating part to drive the double-headed screw to adjust the distance between the two clamping plates, so as to adapt to circuit boards of different sizes to be inserted between the two slots, thereby expanding the application scope of the device. In addition, the two ends of its two transverse plates are respectively slidably installed on an I-shaped plate, and the transverse plate is installed with a fastener that cooperates with the I-shaped plate; a second fixed plate is installed at one end of the transverse plate close to the connecting frame, and a clamping frame is rotatably connected to the second fixed plate, and the clamping frame is fixedly connected to a side opposite to the second fixed plate with an arc frame to transport the circuit board through the second conveyor belt on the transverse plate, and the transverse plate is adjusted to move along the I-shaped part to drive the arc frame on the clamping frame to move, so that the circuit board can be guided and transmitted while adapting to circuit boards of different sizes, thereby expanding the application scope of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a structural schematic diagram of the automatic PCB circuit board feeding machine of the present invention; Attached Figure 2 It is a schematic cross-sectional structure diagram of the automatic PCB circuit board feeding machine of the present invention; Attached Figure 3 The local structure of the automatic PCB feeding machine of the present invention is shown in FIG. Figure 1 ; Attached Figure 4 It is a schematic cross-sectional structure diagram of a placement table in the automatic PCB circuit board feeding machine of the present invention; Attached Figure 5 It is a schematic diagram of the cross-sectional structure of the transverse moving plate in the automatic PCB circuit board feeding machine of the present invention; Attached Figure 6 The local structure of the automatic PCB feeding machine of the present invention is shown in FIG. Figure 2 ; Attached Figure 7 It is a partial structural cross-sectional view of the automatic PCB circuit board feeding machine of the present invention.

[0019] In the above drawings: 1, placing table; 2, arc frame; 201, arc plate; 202, connecting plate; 203, strip plate; 3, first cylinder; 4, electromagnet; 5, first motor; 61, first conveyor belt; 62, second motor; 63, connecting frame; 64, limit rod; 65, sleeve rod; 7, third fixed plate; 8, straight plate; 9, bottom plate; 10, support rod; 111, lifting plate; 112, slide groove; 113, top plate; 114, light rod; 115, lead screw; 121, second conveyor belt; 122, transverse plate; 123, Limiting plate; 13, clamping plate; 14, first fixed plate; 15, second cylinder; 16, push block; 17, sliding frame; 18, slide plate; 19, first wedge block; 20, second wedge block; 21, support plate; 22, I-shaped plate; 23, pulley; 24, fastener; 25, clamping frame; 26, rotating column; 27, second fixed plate; 28, forward and reverse motor; 29, transmission wheel; 30, driven wheel; 31, rotating member; 32, threaded rod; 33, groove; 34, second slide groove; 35, guide groove; 36, plug plate; 37, slot. DETAILED DESCRIPTION

[0020] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0021] Embodiment 1: A PCB circuit board automatic feeding machine, comprising: a connecting frame 63 provided with a first conveyor belt 61, a placing table 1 provided on one side of the connecting frame 63, and a bottom plate 9 provided between the placing table 1 and the connecting frame 63; Two straight plates 8 are symmetrically arranged on the top of the bottom plate 9, and a lifting plate 111 is arranged between the two straight plates 8. Two clamping plates 13 are arranged at intervals on the top of the lifting plate 111. A plurality of plugging plates 36 are arranged at intervals along the length direction on the opposite sides of the two clamping plates 13, and a slot 37 is formed between two adjacent plugging plates 36, and the circuit board can be inserted between the two slots 37; a first fixing plate 14 is arranged on the upper part of the straight plate 8 opposite to the placing table 1 and the lower part opposite to the placing table 1, and a second cylinder 15 with a push block 16 fixedly installed on the movable end is arranged on the top of the first fixing plate 14, and the two second cylinders 15 are arranged opposite to each other; By placing multiple circuit boards between two clamping plates on the lifting plate in advance, during the lifting process of the lifting plate, the push block at the movable end of the second cylinder pushes out the circuit boards between the clamping plates in sequence, and the first cylinder pushes the sliding frame to extend the pushed out circuit boards, so that the electromagnet moves to between the arc frame and the clamping plate to absorb the circuit boards, and then the first cylinder retracts to move the circuit boards along the arc frame to above the second conveyor belt, and the circuit boards are continuously transmitted through the second transmission belt for detection; Two transverse plates 122 with second conveyor belts 121 on top are arranged on the placement table 1, and an arc frame 2 is arranged between the transverse plates 122 and the clamping plate 13, a groove 33 is opened between the two transverse plates 122 and on the top of the placement table 1 close to the connecting frame 63, and a second wedge block 20 is arranged inside the groove 33, and a first wedge block 19 with a sliding frame 17 on the top is slidably installed on the surface of the second wedge block 20, a first cylinder 3 is installed on one side of the groove 33 and on the placement table 1, and a slide plate 18 that can move up and down along the sliding frame 17 is installed on the movable end of the first cylinder 3, and a support plate 21 with an electromagnet 4 is fixedly installed on the side of the sliding frame 17 opposite to the first cylinder 3.

[0022] A third fixing plate 7 is disposed on the opposite sides of the two clamping plates 13, and a double-headed screw 32 with a rotating member 31 in the middle is rotatably installed between the two third fixing plates 7. The two clamping plates 13 are respectively sleeved on both ends of the double-headed screw 32. By driving the rotating member to drive the double-headed screw to rotate forward, the two clamping plates move away from each other, thereby increasing the distance between the two slots on the same horizontal line and accommodating larger circuit boards. The driving rotating member drives the double-headed screw to rotate reversely, so that the two clamping plates move toward each other, thereby reducing the distance between the two slots on the same horizontal line and accommodating smaller circuit boards, thereby expanding the scope of application of the device.

[0023] Both ends of the two transverse plates 122 are slidably mounted on an I-shaped plate 22, and the transverse plates 122 are provided with a fastener 24 that matches the I-shaped plate 22; By pushing the transverse plate to slide along the I-shaped piece, the distance between the two transverse plates is adjusted, and the distance between the two second conveyor belts is adjusted to adapt to circuit boards of different sizes. The transverse plate can also be embedded in the side wall of the I-shaped piece through fasteners to achieve a fixed connection between the transverse plate and the I-shaped piece, thereby improving the position stability of the transverse plate.

[0024] A second fixed plate 27 is installed at one end of the lateral plate 122 close to the connecting frame 63, and a clamping frame 25 is rotatably connected to the second fixed plate 27, and the clamping frame 25 is fixedly connected to the arc frame 2 on the side opposite to the second fixed plate 27; The clamping frame is rotatably connected to the second fixed plate of the transverse plate through a rotating column. The distance between the two ends of the arc frames away from the transverse plate can be adjusted by rotating the arc frame around the axis to accommodate circuit boards of different sizes. One side of the circuit board is embedded in the strip plate, which is beneficial to maintaining the horizontal state of the circuit board, thereby facilitating the electromagnet to magnetically attract the circuit board.

[0025] The arc frame 2 comprises: arc plates 201 spaced apart at upper and lower positions, and a connecting plate 202 for fixing the two arc plates 201 together. A guide groove 35 is formed between the two arc plates 201 and the connecting plate 202 , and the side openings of the two guide grooves 35 are arranged opposite to each other.

[0026] A strip plate 203 is disposed at one end of the two arc-shaped plates 201 away from the clamping frame 25 .

[0027] When the movable end of the first cylinder 3 is extended, the first wedge block 19 moves upward along the inclined surface of the second wedge block 20 .

[0028] A slide groove 112 is provided on each of the opposite sides of the two straight plates 8, and a lead screw 115 is rotatably installed inside one of the slide grooves 112, and a light rod 114 is fixedly installed inside the other slide groove 112. One end of the lifting plate 111 is threadedly connected to the lead screw 115, and the other end is slidably connected to the light rod 114.

[0029] A limiting plate 123 is fixedly installed at both ends of the top of the above-mentioned transverse plate 122, and a pulley 23 is rotatably connected between the two limiting plates 123 located at the same end, and the above-mentioned second conveyor belt 121 is sleeved between the two pulleys 23.

[0030] A forward and reverse motor 28 for driving the pulley 23 to rotate is disposed on the outer wall of the limiting plate 123 .

[0031] The upper end of the lead screw 115 can extend through the slide slot 112 and is fixedly connected to a driven wheel 30. A first motor 5 having an output shaft fixedly connected to a transmission wheel 29 is installed on the straight plate 8, and the transmission wheel 29 and the driven wheel 30 are in transmission cooperation. After the inspection is completed, the circuit board is transmitted in the reverse direction through the second conveyor belt to the top of the electromagnet. The electromagnet is charged to adsorb the circuit board, and the circuit board is inserted between the two slots through the extension of the first cylinder. During the descent of the lifting plate, multiple circuit boards are inserted into the slots in turn. During the insertion of the circuit board, each time the electromagnet is inserted, it will continue to push the previous circuit board into the slot, thereby avoiding the situation where the circuit board is not inserted deep enough and causes the circuit board to fall. During the insertion process, the circuit board between the clamping plates can also be pushed out by the second cylinder located at the bottom of the straight plate, so that the circuit board falls on the first conveyor belt and flows to the next station.

[0032] Both ends of the first conveyor belt 61 are respectively sleeved on the circumferential outer wall of a sleeve rod 65 , and the sleeve rod 65 is arranged on a limiting rod 64 , and the limiting rod 64 is rotatably connected to the connecting frame 63 .

[0033] A second motor 62 for driving the limiting rod 64 to rotate is disposed on the outer wall of the connecting frame 63 .

[0034] A second slide groove 34 for the slide plate 18 to be inserted into is provided on one side of the slide frame 17 opposite to the first cylinder 3 and along the vertical direction.

[0035] Embodiment 2: A PCB circuit board automatic feeding machine, comprising: a connecting frame 63 provided with a first conveyor belt 61, a placing table 1 provided on one side of the connecting frame 63, and a bottom plate 9 provided between the placing table 1 and the connecting frame 63; Two straight plates 8 are symmetrically arranged on the top of the bottom plate 9, and a lifting plate 111 is arranged between the two straight plates 8. Two clamping plates 13 are arranged at intervals on the top of the lifting plate 111. A plurality of plugging plates 36 are arranged at intervals along the length direction on the opposite sides of the two clamping plates 13, and a slot 37 is formed between two adjacent plugging plates 36, and the circuit board can be inserted between the two slots 37; a first fixing plate 14 is arranged on the upper part of the straight plate 8 opposite to the placing table 1 and the lower part opposite to the placing table 1, and a second cylinder 15 with a push block 16 fixedly installed on the movable end is arranged on the top of the first fixing plate 14, and the two second cylinders 15 are arranged opposite to each other; During the movement of the lifting plate, the active end of the second cylinder pushes out the circuit boards between the slots of the two clamping plates in sequence, thereby realizing sequential loading of the circuit boards and improving the continuity of the circuit board loading, which is beneficial to improving the material transmission efficiency, thereby improving the production efficiency; Two transverse plates 122 with second conveyor belts 121 on the top are arranged on the placing table 1, and an arc frame 2 is arranged between the transverse plates 122 and the clamping plate 13, a groove 33 is opened between the two transverse plates 122 and on the top of the placing table 1 close to the connecting frame 63, and a second wedge block 20 is arranged inside the groove 33, and a first wedge block 19 with a sliding frame 17 on the top is slidably installed on the surface of the second wedge block 20, a first cylinder 3 is arranged on one side of the groove 33 and on the placing table 1, and a slide plate 18 that can move up and down along the sliding frame 17 is installed on the movable end of the first cylinder 3, and a support plate 21 with an electromagnet 4 is fixedly installed on the side of the sliding frame 17 opposite to the first cylinder 3; By retracting or extending the movable end of the first cylinder, the first wedge block moves along the inclined surface of the second wedge block, and the electromagnet cooperates with the circuit board and moves along the arc frame, and is relayed by the second conveyor belt on the placement table. On the basis of realizing the transfer and transmission of the circuit board, the circuit board moves along the arc groove during the forward and reverse transmission process, which greatly reduces the risk of the circuit board falling during the transfer process, improves the safety of the circuit board transfer, and also improves the continuity of the circuit board transfer between different mechanisms, thereby improving the transportation efficiency of the circuit board.

[0036] A third fixing plate 7 is disposed on the opposite sides of the two clamping plates 13, and a double-headed screw 32 with a rotating member 31 in the middle is rotatably installed between the two third fixing plates 7. The two clamping plates 13 are respectively sleeved on both ends of the double-headed screw 32. The distance between the two clamping plates can be adjusted by toggling the rotating member to drive the double-headed screw, so that circuit boards of different sizes can be inserted between the two slots, thereby expanding the application range of the device.

[0037] Both ends of the two transverse plates 122 are slidably mounted on an I-shaped plate 22 , and a fastener 24 matching the I-shaped plate 22 is mounted on the transverse plates 122 .

[0038] A second fixed plate 27 is installed at one end of the lateral plate 122 close to the connecting frame 63, and a clamping frame 25 is rotatably connected to the second fixed plate 27, and the clamping frame 25 is fixedly connected to the arc frame 2 on the side opposite to the second fixed plate 27; The circuit board is transported by the second conveyor belt on the transverse plate, and the arc frame on the clamping frame is driven to move by adjusting the transverse plate to move along the workpiece, so that the circuit board can be guided and transmitted while adapting to circuit boards of different sizes, thereby expanding the scope of application of the device.

[0039] The arc frame 2 comprises: arc plates 201 spaced apart at upper and lower positions, and a connecting plate 202 for fixing the two arc plates 201 together. A guide groove 35 is formed between the two arc plates 201 and the connecting plate 202 , and the side openings of the two guide grooves 35 are arranged opposite to each other.

[0040] A strip plate 203 is disposed at one end of the two arc-shaped plates 201 away from the clamping frame 25 .

[0041] When the movable end of the first cylinder 3 is extended, the first wedge block 19 moves upward along the inclined surface of the second wedge block 20 .

[0042] A slide groove 112 is provided on each of the opposite sides of the two straight plates 8, and a lead screw 115 is rotatably installed inside one of the slide grooves 112, and a light rod 114 is fixedly installed inside the other slide groove 112. One end of the lifting plate 111 is threadedly connected to the lead screw 115, and the other end is slidably connected to the light rod 114.

[0043] A limiting plate 123 is fixedly installed at both ends of the top of the above-mentioned transverse plate 122, and a pulley 23 is rotatably connected between the two limiting plates 123 located at the same end, and the above-mentioned second conveyor belt 121 is sleeved between the two pulleys 23.

[0044] A forward and reverse motor 28 for driving the pulley 23 to rotate is disposed on the outer wall of the limiting plate 123 .

[0045] The I-shaped plates 22 are respectively arranged on both sides of the groove 33 .

[0046] A rotating column 26 is disposed inside the clamping frame 25 , and the second fixing plate 27 is sleeved on the circumferential outer wall of the rotating column 26 .

[0047] A top plate 113 is disposed above the clamping plate 13 and between the two third fixing plates 7 .

[0048] A plurality of support rods 10 are disposed at the bottom of the placement table 1 .

[0049] The working principle is: By placing multiple circuit boards between two clamping plates on the lifting plate in advance, during the lifting process of the lifting plate, the push block at the movable end of the second cylinder pushes out the circuit boards between the clamping plates in sequence, and the first cylinder pushes the sliding frame to extend the pushed out circuit boards, so that the electromagnet moves to between the arc frame and the clamping plate to absorb the circuit boards, and then the first cylinder retracts to move the circuit boards along the arc frame to above the second conveyor belt, and the circuit boards are continuously transmitted through the second transmission belt for detection; The double-ended lead screw is driven to rotate forward by the driving rotating member, so that the two clamping plates move away from each other, thereby expanding the distance between the two slots on the same horizontal line, and can accommodate a larger circuit board. The double-ended lead screw is driven to rotate in the reverse direction by the driving rotating member, so that the two clamping plates move toward each other, thereby reducing the distance between the two slots on the same horizontal line, and can accommodate a smaller circuit board, thereby expanding the application range of the device. By pushing the transverse moving plate to slide along the I-shaped piece, the distance between the two transverse moving plates is adjusted, and the distance between the two second conveyor belts is adjusted to adapt to circuit boards of different sizes. The transverse moving plate can also be embedded into the side wall of the I-shaped piece through a fastener to achieve a fixed connection between the transverse moving plate and the I-shaped piece, thereby improving the position stability of the transverse moving plate. The clamping frame is rotatably connected to the second fixed plate of the transverse plate through a rotating column. The distance between the ends of the two arc frames away from the transverse plate can be adjusted by rotating the arc frame around the axis to accommodate circuit boards of different sizes. One side of the circuit board is embedded in the strip plate, which is conducive to keeping the circuit board in a horizontal state, thereby facilitating the electromagnet to magnetically attract and cooperate with the circuit board. After the inspection is completed, the circuit board is transmitted in the reverse direction through the second conveyor belt to the top of the electromagnet. The electromagnet is charged to adsorb the circuit board, and the circuit board is inserted between the two slots through the extension of the first cylinder. During the descent of the lifting plate, multiple circuit boards are inserted into the slots in turn. During the insertion of the circuit board, each time the electromagnet is inserted, it will continue to push the previous circuit board into the slot, thereby avoiding the situation where the circuit board is not inserted deep enough and causes the circuit board to fall. During the insertion process, the circuit board between the clamping plates can also be pushed out by the second cylinder located at the bottom of the straight plate, so that the circuit board falls on the first conveyor belt and flows to the next station.

[0050] When the above-mentioned PCB automatic feeding machine is used, the active end of the second cylinder pushes out the circuit boards between the slots of the two clamping plates in sequence during the movement of the lifting plate, thereby realizing sequential feeding of the circuit boards and improving the continuity of feeding the circuit boards, which is beneficial to improving the transmission efficiency of the materials, thereby improving the production efficiency; In addition, the first cylinder retracts or extends the movable end thereof, so that the first wedge moves along the inclined surface of the second wedge, and the electromagnet cooperates with the circuit board by magnetic attraction and moves along the arc frame, and is relayed by the second conveyor belt on the placement table. On the basis of realizing the transfer and transmission of the circuit board, the circuit board moves along the arc groove during the forward and reverse transmission process, which greatly reduces the risk of the circuit board falling during the transfer process, improves the safety of the circuit board transfer, and improves the continuity of the circuit board transfer between different mechanisms, thereby improving the transmission efficiency of the circuit board; In addition, the circuit board is transported by the second conveyor belt on the transverse plate, and the arc frame on the clamping frame is driven to move by adjusting the transverse plate to move along the I-shaped piece, so that the circuit board can be guided and transmitted while adapting to circuit boards of different sizes, thereby expanding the scope of application of the device; in addition, it can adjust the distance between the two clamping plates by driving the double-headed screw by turning the rotating part, thereby adapting to circuit boards of different sizes to be inserted between the two slots, thereby expanding the scope of application of the device.

[0051] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A PCB circuit board automatic feeding machine, comprising: A connecting frame (63) provided with a first conveyor belt (61), characterized in that a placing platform (1) is provided on one side of the connecting frame (63), and a bottom plate (9) is provided between the placing platform (1) and the connecting frame (63); Two straight plates (8) are symmetrically arranged on the top of the bottom plate (9), and a lifting plate (111) is arranged between the two straight plates (8); two clamping plates (13) are arranged at intervals on the top of the lifting plate (111); a plurality of plugging plates (36) are arranged at intervals on opposite sides of the two clamping plates (13) and along the length direction; a slot (37) is formed between two adjacent plugging plates (36); and a circuit board can be inserted between the two slots (37); a first fixing plate (14) is arranged on the upper part of the straight plate (8) opposite to the placing table (1) and on the lower part of the side opposite to the placing table (1); and a second cylinder (15) with a push block (16) fixedly installed on a movable end is arranged on the top of the first fixing plate (14); and the two second cylinders (15) are arranged opposite to each other; Two transverse plates (122) with second conveyor belts (121) on the top are arranged on the placement table (1), and an arc frame (2) is arranged between the transverse plates (122) and the clamping plate (13). A groove (33) is provided between the two transverse plates (122) and on the top of the placement table (1) near the connecting frame (63). A second wedge block (20) is arranged inside the groove (33), and a first wedge block (19) with a sliding frame (17) on the top is slidably installed on the surface of the second wedge block (20). A first cylinder (3) is arranged on one side of the groove (33) and on the placement table (1), and a slide plate (18) capable of moving up and down along the sliding frame (17) is installed at the movable end of the first cylinder (3), and a support plate (21) provided with an electromagnet (4) is fixedly installed on the side of the sliding frame (17) opposite to the first cylinder (3).

2. The automatic PCB circuit board feeding machine according to claim 1, characterized in that: A third fixing plate (7) is respectively arranged on opposite sides of the two clamping plates (13), and a double-headed screw (32) with a rotating member (31) in the middle is rotatably mounted between the two third fixing plates (7), and the two clamping plates (13) are respectively sleeved on both ends of the double-headed screw (32).

3. The automatic PCB circuit board feeding machine according to claim 1 or 2, characterized in that: Both ends of the two transverse plates (122) are respectively slidably mounted on an I-shaped plate (22), and a fastener (24) matching the I-shaped plate (22) is mounted on the transverse plates (122).

4. The automatic PCB circuit board feeding machine according to claim 3 is characterized in that: A second fixed plate (27) is installed at one end of the transverse plate (122) close to the connecting frame (63), and a clamping frame (25) is rotatably connected to the second fixed plate (27), and the clamping frame (25) is fixedly connected to the arc frame (2) on a side opposite to the second fixed plate (27).

5. The automatic PCB feeding machine according to claim 4, characterized in that: The arc frame (2) comprises: arc plates (201) spaced apart at upper and lower positions, and a connecting plate (202) for fixedly connecting the two arc plates (201); the two arc plates (201) and the connecting plate (202) jointly form a guide groove (35); and the side openings of the two guide grooves (35) are arranged opposite to each other.

6. The automatic PCB circuit board feeding machine according to claim 5, characterized in that: A strip plate (203) is provided at one end of each of the two arc-shaped plates (201) away from the clamping frame (25).

7. The automatic PCB circuit board feeding machine according to claim 1, characterized in that: When the movable end of the first cylinder (3) is extended, the first wedge block (19) moves upward along the inclined surface of the second wedge block (20).

8. The automatic PCB circuit board feeding machine according to claim 1, characterized in that: A slide groove (112) is provided on opposite sides of the two straight plates (8), and a lead screw (115) is rotatably installed inside one of the slide grooves (112), and a smooth rod (114) is fixedly installed inside the other slide groove (112). One end of the lifting plate (111) is threadedly connected to the lead screw (115), and the other end is slidably connected to the smooth rod (114).

9. The automatic PCB circuit board feeding machine according to claim 1, characterized in that: A limit plate (123) is fixedly mounted on both ends of the top of the transverse plate (122), a belt pulley (23) is rotatably connected between the two limit plates (123) at the same end, and the second conveyor belt (121) is sleeved between the two belt pulleys (23).

10. The automatic PCB circuit board feeding machine according to claim 9, characterized in that: A forward and reverse motor (28) for driving the pulley (23) to rotate is provided on the outer wall of the limiting plate (123).

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