Anti-offset automatic chip mounter

Abstract

The invention particularly relates to an anti-deviation automatic chip mounter which comprises a machine body, a mounting module is assembled in the middle of the machine body, a tape winding type feeder is assembled on the side edge of the machine body, an automatic feeding mechanism is assembled on the left side of the machine body, and a movable correction mechanism is assembled in the machine body. The automatic feeding mechanism comprises a lifting assembly and a filling assembly. The lifting assembly comprises a lifting frame, a conveying table is assembled on the inner side of the lifting frame in an up-down sliding mode, and electric sliding rails are fixedly assembled on the front side and the rear side in the lifting frame. A notch is formed in the right side of the conveying table, an assembling box is fixedly arranged on the left side of the conveying table, conveying belts are assembled on the front and rear sides of the conveying table, and a conveying motor is fixedly assembled in the assembling box; the filling assembly comprises a filling frame, a conveying groove is formed in the right side of the filling frame, and a plurality of C-shaped bearing plates are fixedly assembled in the filling frame. The moving correction mechanism comprises a guiding assembly and a conveying assembly, the guiding assembly is assembled on the left side of the conveying assembly, and the guiding assembly and the conveying assembly are each composed of a front plate and a back plate.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic chip placement machines, and in particular relates to an anti-drift automatic chip placement machine. Background Art

[0002] In the electronics manufacturing sector, automatic placement machines are the core equipment for implementing surface mount technology (SMT). They use placement modules to precisely assemble components. A typical placement module consists of an XYZ precision motion mechanism, a placement head with integrated multiple vacuum nozzles, and an alignment vision system. It relies on visual positioning and motion control to achieve component pickup and circuit board coordinate matching. The accompanying tape feeder carries the component tape on a tray, guides the tape through guide grooves, removes the cover tape using a peeling mechanism, and uses a sensor group to detect component position, providing continuous feeding support for high-speed placement. However, existing equipment still has some defects in the circuit board conveying and positioning process: the circuit boards are generally transported by mechanical pushing during the transfer to the placement station. When the circuit boards loaded with printed solder paste are placed in the feed rack manually or semi-automatically, they need to rely on side baffles and corner blocks for physical limitation, or there is no limiting structure. During the pushing and conveying process, the edge of the circuit board continues to rub against the inclined surface of the baffle, which can easily cause the copper foil on the edge of the board to peel off or the substrate to collapse. At the same time, mechanical collisions can easily cause the uncured solder paste to shift, directly affecting the subsequent component soldering yield. Racks without limiting structures can easily cause the circuit boards to slip. In addition, when transporting to the mounting area, the position of the circuit board is prone to cumulative deviation. Traditional conveyor belts lack width adaptive capabilities, and circuit boards of different sizes are prone to deflection and movement in a fixed-width transmission channel. These problems reduce the yield and stability of the mounting equipment. Therefore, an anti-deviation automatic placement machine is provided to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide an anti-deviation automatic placement machine to solve the problems existing in the background technology.

[0004] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows: An anti-drift automatic placement machine comprises a body, a placement module is mounted in the middle of the body, a roll-to-roll feeder is mounted on the side of the body, an automatic feeding mechanism is mounted on the left side of the body, and a movement correction mechanism is mounted inside the body; The automatic feeding mechanism includes a lifting component and a filling component; The lifting assembly includes a lifting frame, a conveying platform is mounted on the inner side of the lifting frame for sliding up and down, and electric slide rails are fixedly mounted on the front and rear sides of the lifting frame, and the movable ends of the two electric slide rails are fixedly connected to the front and rear ends of the conveying platform respectively; A notch is provided on the right side of the conveying platform, an assembly box is fixedly provided on the left side of the conveying platform, conveyor belts are provided on both the front and rear sides of the conveying platform, a conveying motor is fixedly provided inside the assembly box, and an output end of the conveying motor is transmission-connected to the conveyor belt; The loading assembly includes a loading frame, a conveying trough is opened on the right side of the loading frame, and a plurality of C-shaped loading plates are fixedly installed inside the loading frame, and the plurality of C-shaped loading plates are evenly distributed up and down; The movement and correction mechanism includes a guide assembly and a transmission assembly, wherein the guide assembly is assembled on the left side of the transmission assembly, and the guide assembly and the transmission assembly are both composed of a front plate and a back plate, wherein the front plate and the back plate are separated from each other in front and back directions, and a space is formed between the two, and the front and back width of the middle space of the guide assembly is smaller than the front and back width of the middle space of the transmission assembly; The front plate and the back plate are both equipped with a transmission belt and a transmission motor, the output end of the transmission motor is connected to the transmission belt, the upper sides of the front plate and the back plate are fixedly equipped with a pad, and the pad is located below the upper transmission belt. The front plate and the back plate of the transmission assembly are both fixedly equipped with a correction plate, a pressure plate and a pushing cylinder, the left ends of the front plate and the back plate are fixedly equipped with the correction plate, the upper ends of the front plate and the back plate are fixedly equipped with the pressure plate, the inner sides of the front plate and the back plate are fixedly equipped with the pushing cylinder, the pushing cylinder is located below the pressure plate, and the output end of the pushing cylinder is fixedly equipped with an elastic gasket.

[0005] Preferably, the front plate is fixedly assembled inside the body, the back plate is slidably assembled inside the body, the front plate is fixedly assembled with a servo motor, the front plate is rotatably mounted with a ball screw, the output end of the servo motor is transmission-connected to the ball screw, and the movable bearing end of the ball screw is fixedly connected to the back plate.

[0006] Preferably, the front plate is fixedly equipped with a sliding rod, and the sliding rod is connected to the back plate in a front-rear sliding manner.

[0007] Preferably, an adjustment frame is installed on the inner side of the loading frame for sliding back and forth, and a number of supporting bars are evenly fixed on the upper and lower parts of the adjustment frame. An adjustment slot is opened on the upper end of the loading frame, and a threaded rod is fixed on the upper end of the adjustment frame. A fastening cap is provided on the upper side of the threaded rod for rotating threads.

[0008] Preferably, the front side of the C-shaped supporting plate and the supporting bar are both fixedly provided with side baffles and corner blocks.

[0009] Preferably, a plurality of lifting rods are fixedly mounted on the inner side of the lifting frame, and linear ball bearings are fixedly mounted on both the front and rear sides of the conveying platform, and the lifting rods are connected to the linear ball bearings in an up and down sliding manner.

[0010] Preferably, the automatic feeding mechanism further includes a conveying assembly, which includes two electric conveyor belts, and the right ends of the two electric conveyor belts are respectively fixedly assembled on the upper and lower sides of the left end of the lifting frame.

[0011] Preferably, a group of the lifting components is further assembled on the left side of the conveying component, and the left ends of the two electric conveyor belts are respectively fixedly assembled on the upper and lower sides of the right end of the lifting frame of the left lifting component.

[0012] Preferably, the front plate and the back plate are both rotatably provided with a plurality of transmission rollers connected to the transmission belt transmission, the front plate and the back plate are both slidably equipped with adjustment blocks on the left and right, the adjustment blocks are rotatably equipped with adjustment rollers, the front plate and the back plate are both fixedly provided with adjustment cylinders, the output end of the adjustment cylinder is fixedly provided with a multi-stage telescopic rod, the other end of the multi-stage telescopic rod is fixedly connected to the adjustment block, a spring is fixedly provided between the adjustment cylinder and the adjustment block, and the spring is sleeved on the outside of the multi-stage telescopic rod.

[0013] A method for using an anti-drift automatic placement machine includes the following steps: First, adjust the width of the inner side of the loading rack according to the width of the circuit board. When adjusting, first loosen the two fastening caps so that the adjustment rack can slide back and forth inside the loading rack. After the adjustment is completed, tighten the two fastening caps. Then, the distance between the front plate and the back plate of the transmission assembly is adjusted according to the width of the circuit board. The servo motor is started to drive the ball screw to rotate, thereby pushing the back plate away from or closer to the front plate, so that the front and back sides of the circuit board can be transported on the front and back conveyor belts of the transmission assembly without protruding outside the two conveyor belts. At this time, the printed circuit board with solder paste is assembled on the C-carrying plate of the loading rack and the carrying bar of the adjustment rack, and the circuit board is limited by the side baffles and corner blocks; after the circuit board is loaded, the conveyor platform of the leftmost lifting rack is lowered, and the loading rack is placed on the lowered conveyor platform, and then the electric slide rail is started to transport the conveyor platform with the loading rack upward to the upper electric conveyor belt. At this time, the conveyor belt of the conveyor platform can be started to move the loading rack to the upper electric conveyor belt for placement, and the left lifting rack can be lowered to load and transport the next group of loading racks; The loading rack on the upper electric conveyor belt can be transported to the conveying platform of the right lifting rack to start the board loading operation. When loading the board, since the front plate and the left side of the back plate of the left guide assembly are both inside the lifting rack on the right, and the conveying platform and the loading rack are respectively provided with slots and conveying slots, the conveying platform of the right lifting rack is controlled to descend at this time, so that the circuit board assembled on the lower side of the loading rack can contact the conveyor belt of the guide assembly. Since the lowering of the conveying platform can make the lower circuit board out of the blocking range of the side baffle and the corner stopper, the conveyor belt can smoothly convey the circuit board. After the loading of the circuit boards on the loading rack is completed, the lower end of the loading rack has moved to a position parallel to the lower electric conveyor belt, and the empty loading rack can be moved to the lower electric conveyor belt by the right conveyor platform and the lower electric conveyor belt to wait, so that the loading rack is transported between the two lifting racks in a cycle. When the PCB moves to the junction of the guide assembly and the conveyor assembly, the two sides of the PCB will contact the side of the correction plate, allowing the PCB to be accurately moved onto the conveyor belt of the conveyor assembly. At this time, the front and back sides of the PCB are both on the conveyor belt of the conveyor assembly, and then it is transported to the patch area along the conveyor belt. When the circuit board moves to the patch area, it is located between the pressure plate and the push cylinder. At this time, the push cylinder is started, and the elastic gasket assembled at the output end of the push cylinder squeezes the conveyor belt and the circuit board. The pressure plate and the elastic gasket are used to fix the circuit board in place, ensuring that after the placement module is initially positioned, the circuit board will not move during the placement process. Finally, after the placement is completed, the cylinder is pushed to drive the elastic gasket at its output end to move downward and contact the fixed limit, and the mounted circuit board will move to the next process along the conveyor belt.

[0014] Advantages of the present invention: 1. The automatic feeding mechanism of the present invention adopts a bilaterally symmetrical lifting assembly in conjunction with an electric conveyor belt, which realizes the automatic lifting and lowering, horizontal conveying and empty rack recovery cycle of the loading rack, eliminating the need for manual high-level handling of the loading rack, thereby reducing labor intensity. The corresponding notches and conveyor troughs of the conveyor platform and the loading rack, combined with the descending action of the lifting frame, enable the bottom layer of circuit boards to descend smoothly and vertically onto the conveyor belt of the guide assembly. This design avoids the risks of friction, tilting or collision between the circuit boards and the side guards or corner blocks in traditional push-type conveying, effectively protecting the integrity of the circuit board edges and preventing the solder paste from being displaced by external forces.

[0015] 2. The partition design of different widths and narrow spacings between the guide component and the transmission component, combined with the correction plate at the junction of the two, automatically corrects the position deviation of the circuit board during transportation, so that the side of the circuit board can be loaded on the two conveyor belts of the transmission component, which is convenient for subsequent processing. The pressure plate and the push cylinder with elastic gasket form a flexible clamping mechanism, which can firmly lock the position of the circuit board before placement, ensuring the absolute stillness and no deviation of the circuit board during placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further illustrated by means of the following non-limiting examples.

[0017] Figure 1 This is a schematic diagram of the structure of an anti-drift automatic placement machine of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of an anti-drift automatic placement machine of the present invention. Figure 2 ; Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle; Figure 4 for Figure 2 A magnified schematic diagram of point B in the middle; Figure 5 This is a schematic diagram of the partial structure of an anti-drift automatic placement machine of the present invention. Figure 1 ; Figure 6 for Figure 5 Enlarged schematic diagram of point C in the middle; Figure 7 This is a schematic diagram of the partial structure of an anti-drift automatic placement machine of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of the partial structure of an anti-drift automatic placement machine of the present invention. Figure 3 ; Figure 9 for Figure 8 The enlarged schematic diagram of point D in the middle; Figure 10 for Figure 8 The enlarged schematic diagram of point E in the middle; Figure 11 for Figure 8 The enlarged schematic diagram of point F in the middle; The main component symbols are described as follows: Body 1, placement module 11, tape feeder 12, lifting frame 13, conveyor table 131, notch 1311, assembly box 1312, conveyor belt 1313, electric slide 132, lifting rod 133, linear ball bearing 134, loading frame 14, conveyor trough 141, C-shaped load plate 142, adjustment frame 143, load bar 144, adjustment slot 145, threaded rod 146, fastening cap 147, side guard 148, corner block 149 , guide component 15, transmission component 151, front plate 152, back plate 153, transmission belt 154, transmission roller 1541, adjustment block 1542, adjustment roller 1543, adjustment cylinder 1544, multi-stage telescopic rod 1545, spring 1546, pad 155, correction plate 156, pressure plate 157, pushing cylinder 158, elastic gasket 1581, servo motor 16, ball screw 161, slide rod 162, electric conveyor belt 17. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1-2 As shown, an anti-deviation automatic placement machine of the present invention includes a body 1, a placement module 11 is installed in the middle of the body 1, a tape feeder 12 is installed on the side of the body 1, an automatic feeding mechanism is installed on the left side of the body 1, and a moving correction mechanism is installed inside the body 1; The placement module 11 is basically composed of a precision motion mechanism, a placement head integrated with several vacuum nozzles, and an alignment vision system for identifying component positions and PCB positioning. The motion mechanism enables the placement head to move in the XYZ directions, and the vacuum nozzles pick up and accurately place components at the specified position on the PCB. The tape feeder 12 is basically composed of a tray carrying the component tape, a peeling mechanism for peeling off the component cover tape, a guide groove for positioning the tape's movement path, and a sensor group for detecting the component position. The tape feeder 12 supplies the components needed for patch processing through a rotating tape-conveyed tray, meeting the requirements of fast and automatic patch processing. like Figure 3-7 As shown, the automatic feeding mechanism includes a lifting component and a filling component; The lifting assembly includes a lifting frame 13, on the inside of which a conveying platform 131 is mounted for sliding movement up and down. Electric slide rails 132 are fixedly mounted on the front and rear sides of the lifting frame 13. The movable ends of the two electric slide rails 132 are fixedly connected to the front and rear ends of the conveying platform 131 respectively. A notch 1311 is provided on the right side of the conveyor platform 131, and an assembly box 1312 is fixedly provided on the left side of the conveyor platform 131. Conveyor belts 1313 are installed on both the front and rear sides of the conveyor platform 131. Conveyor motors are fixedly provided inside the assembly box 1312, and the output ends of the conveyor motors are transmission-connected to the conveyor belts 1313. The two conveyor motors can drive the conveyor belts 1313 on both sides to move. Support plates or rollers are provided on both sides of the conveyor platform 131 to support the smooth movement of the conveyor belts 1313, thereby ensuring smooth transportation of the conveyor belts 1313. The loading assembly includes a loading frame 14, a conveying trough 141 is opened on the right side of the loading frame 14, and a plurality of C-shaped load plates 142 are fixedly assembled inside the loading frame 14, and the plurality of C-shaped load plates 142 are evenly distributed up and down; By opening the slots 1311 and the conveying slots 141, the lifting frame 13 can facilitate the loading of circuit boards onto the two conveyor belts 154 of the guide assembly 15 when slowly conveying the loading frame 14 downwards; this avoids collisions of the circuit boards during movement, prevents the solder paste from shaking due to collisions, and protects the integrity of the edges of the circuit boards; and such a conveying mode is far superior to the pushing conveying mode. In this conveying mode, there is no need to consider setting inclined surfaces for the side guards or corner blocks, so that scratches and tilts are not generated during the pushing and conveying of the circuit boards, thereby achieving smooth conveying of the circuit boards.

[0020] like Figure 8-11 As shown, the mobile correction mechanism includes a guide assembly 15 and a transmission assembly 151. The guide assembly 15 is assembled on the left side of the transmission assembly 151. The guide assembly 15 and the transmission assembly 151 are both composed of a front plate 152 and a back plate 153. The front plate 152 and the back plate 153 are separated from each other front to back, and there is a space between them. The front and rear width of the middle space of the guide assembly 15 is smaller than the front and rear width of the middle space of the transmission assembly 151. The front plate 152 and the back plate 153 are both equipped with a conveyor belt 154 and a conveyor motor, and the output end of the conveyor motor is connected to the conveyor belt 154 for transmission. The upper sides of the front plate 152 and the back plate 153 are fixedly equipped with a pad 155, and the pad 155 is located below the upper conveyor belt 154. The front plate 152 and the back plate 153 of the transmission assembly 151 are both fixedly equipped with a correction plate 156, a pressure plate 157 and a pushing cylinder 158. The left ends of the front plate 152 and the back plate 153 are both fixedly equipped with the correction plate 156, the upper ends of the front plate 152 and the back plate 153 are both fixedly equipped with a pressure plate 157, and the inner sides of the front plate 152 and the back plate 153 are both fixedly equipped with a pushing cylinder 158, and the pushing cylinder 158 is located below the pressure plate 157. The output end of the pushing cylinder 158 is fixedly equipped with an elastic gasket 1581.

[0021] The front plate 152 is fixedly assembled inside the body 1, and the back plate 153 is slidably assembled inside the body 1 back and forth. The front plate 152 is fixedly assembled with a servo motor 16, and the front plate 152 is rotatably mounted with a ball screw 161. The output end of the servo motor 16 is transmission-connected to the ball screw 161, and the movable bearing end of the ball screw 161 is fixedly connected to the back plate 153.

[0022] The front plate 152 is fixedly mounted with a slide bar 162 , and the slide bar 162 is connected to the back plate 153 for forward and backward sliding.

[0023] An adjustment frame 143 is installed on the inner side of the loading frame 14 for sliding back and forth. A number of supporting bars 144 are evenly fixed on the upper and lower parts of the adjustment frame 143. An adjustment slot 145 is opened on the upper end of the loading frame 14. A threaded rod 146 is fixed on the upper end of the adjustment frame 143. A fastening cap 147 is provided on the upper side of the threaded rod 146 for rotation.

[0024] Side guards 148 and corner blocks 149 are fixed to the front side of the C-shaped carrier plate 142 and the carrier bar 145. The side guards 148 and corner blocks 149 ensure that the circuit boards on the loading rack 14 are placed stably and prevent the circuit boards from sliding out of the loading rack 14. A plurality of lifting rods 133 are fixedly mounted on the inner side of the lifting frame 13 , and linear ball bearings 134 are fixedly mounted on both the front and rear sides of the conveying platform 131 . The lifting rods 133 and the linear ball bearings 134 are slidably connected to each other up and down.

[0025] The automatic feeding mechanism further includes a conveying assembly, which includes two electric conveyor belts 17 . The right ends of the two electric conveyor belts 17 are respectively fixedly assembled on the upper and lower sides of the left end of the lifting frame 13 .

[0026] The left side of the conveyor assembly is also equipped with a lifting assembly. The left ends of two electric conveyor belts 17 are fixedly mounted on the upper and lower sides of the right end of the lifting frame 13 of the left lifting assembly. The installation of the left lifting assembly eliminates the need for manual lifting or lowering of the loading frame 14, reducing labor and making the process smoother. The front plate 152 and the back plate 153 both rotate with several transmission rollers 1541 connected to the transmission belt 154. The front plate 152 and the back plate 153 are both equipped with adjustment blocks 1542 for sliding left and right. The adjustment blocks 1542 are rotatably equipped with adjustment rollers 1543. The front plate 152 and the back plate 153 are both fixedly equipped with adjustment cylinders 1544. The output end of the adjustment cylinder 1544 is fixedly equipped with a multi-stage telescopic rod 1545. The other end of the multi-stage telescopic rod 1545 is fixedly connected to the adjustment block 1542. A spring 1546 is fixedly equipped between the adjustment cylinder 1544 and the adjustment block 1542. The spring 1546 is sleeved on the outside of the multi-stage telescopic rod 1545.

[0027] The upper side of the conveyor belt 154 of the guide assembly extends beyond the upper ends of the front plate 152 and the back plate 153 via the conveyor rollers 1541, allowing the conveyor belt 154 to move the circuit board. The upper side of the conveyor belt 154 of the transmission assembly 151 does not extend beyond the upper ends of the front plate 152 and the back plate 153 due to the assembly of the conveyor rollers 1541. Thus, the upper sides of the front plate 152 and the back plate 153 can be used to block the movement of the circuit board, ensuring smooth movement of the circuit board without deflection. When mounting circuit boards: the circuit boards printed with solder paste are first placed on the C-shaped carrying plate 142 of the loading rack 14 and the carrying bar 144 of the adjusting rack 143, and are limited and positioned by the side baffles 148 and the corner blocks 149. The loading rack 14 is placed on the conveying platform 131 of the left lifting assembly, and is lifted to a position flush with the upper electric conveyor belt 17 by the electric slide rail 132. The conveyor belt 1313 then delivers the loading rack 14 to the upper electric conveyor belt 17; the loading rack 14 is then conveyed to the conveying platform 131 of the right lifting assembly, and the conveyor platform 131 descends so that the circuit boards at the bottom of the loading rack 14 contact the conveyor belt 154 of the guide assembly 15; after the circuit boards are out of the limiting range of the corner blocks 149, they are conveyed by the conveyor belt 154 of the guide assembly 15 It is received and transported to the right; when the circuit board moves to the junction of the guide component 15 and the transmission component 151, the positions of the correction plates 156 on both sides of the circuit board are corrected to ensure that the circuit board accurately enters the two conveyor belts 154 of the transmission component 151 and continues to move; when the circuit board reaches the patch area, it is located between the pressure plate 157 and the pushing cylinder 158, and the pushing cylinder 158 drives the elastic gasket 1581 to move upward, and clamps the circuit board together with the pressure plate 157; then the placement module 11 picks up the components from the tape feeder 12 through the vacuum suction nozzle, and positions them with the help of the alignment vision system, and accurately places the components on the specified position of the circuit board; after the placement is completed, the pushing cylinder 158 resets and releases the circuit board, and the mounted circuit board is transported to the next process by the conveyor belt 154.

[0028] A method for using an anti-drift automatic placement machine includes the following steps: First, adjust the width of the inner side of the loading rack according to the width of the circuit board. When adjusting, first loosen the two fastening caps so that the adjustment rack can slide back and forth inside the loading rack. After the adjustment is completed, tighten the two fastening caps. Then, the distance between the front plate and the back plate of the transmission assembly is adjusted according to the width of the circuit board. The servo motor is started to drive the ball screw to rotate, thereby pushing the back plate away from or closer to the front plate, so that the front and back sides of the circuit board can be transported on the front and back conveyor belts of the transmission assembly without protruding outside the two conveyor belts. At this time, the printed circuit board with solder paste is assembled on the C-carrying plate of the loading rack and the carrying bar of the adjustment rack, and the circuit board is limited by the side baffles and corner blocks; after the circuit board is loaded, the conveyor platform of the leftmost lifting rack is lowered, and the loading rack is placed on the lowered conveyor platform, and then the electric slide rail is started to transport the conveyor platform with the loading rack upward to the upper electric conveyor belt. At this time, the conveyor belt of the conveyor platform can be started to move the loading rack to the upper electric conveyor belt for placement, and the left lifting rack can be lowered to load and transport the next group of loading racks; The loading rack on the upper electric conveyor belt can be transported to the conveying platform of the right lifting rack to start the board loading operation. When loading the board, since the front plate and the left side of the back plate of the left guide assembly are both inside the lifting rack on the right, and the conveying platform and the loading rack are respectively provided with slots and conveying slots, the conveying platform of the right lifting rack is controlled to descend at this time, so that the circuit board assembled on the lower side of the loading rack can contact the conveyor belt of the guide assembly. Since the lowering of the conveying platform can make the lower circuit board out of the blocking range of the side baffle and the corner stopper, the conveyor belt can smoothly convey the circuit board. After the loading of the circuit boards on the loading rack is completed, the lower end of the loading rack has moved to a position parallel to the lower electric conveyor belt, and the empty loading rack can be moved to the lower electric conveyor belt by the right conveyor platform and the lower electric conveyor belt to wait, so that the loading rack is transported between the two lifting racks in a cycle. When the PCB moves to the junction of the guide assembly and the conveyor assembly, the two sides of the PCB will contact the side of the correction plate, allowing the PCB to be accurately moved onto the conveyor belt of the conveyor assembly. At this time, the front and back sides of the PCB are both on the conveyor belt of the conveyor assembly, and then it is transported to the patch area along the conveyor belt. When the circuit board moves to the patch area, it is located between the pressure plate and the push cylinder. At this time, the push cylinder is started, and the elastic gasket assembled at the output end of the push cylinder squeezes the conveyor belt and the circuit board. The pressure plate and the elastic gasket are used to fix the circuit board in place, ensuring that after the placement module is initially positioned, the circuit board will not move during the placement process. Finally, after the placement is completed, the cylinder is pushed to drive the elastic gasket at its output end to move downward and contact the fixed limit, and the mounted circuit board will move to the next process along the conveyor belt.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. An anti-drift automatic placement machine, comprising a body, a placement module mounted in the middle of the body, and a tape feeder mounted on the side of the body, characterized in that: The left side of the machine body is equipped with an automatic feeding mechanism, and the interior of the machine body is equipped with a moving correction mechanism; The automatic feeding mechanism includes a lifting component and a filling component; The lifting assembly includes a lifting frame, a conveying platform is mounted on the inner side of the lifting frame for sliding up and down, and electric slide rails are fixedly mounted on the front and rear sides of the lifting frame, and the movable ends of the two electric slide rails are fixedly connected to the front and rear ends of the conveying platform respectively; A notch is provided on the right side of the conveying platform, an assembly box is fixedly provided on the left side of the conveying platform, conveyor belts are provided on both the front and rear sides of the conveying platform, a conveying motor is fixedly provided inside the assembly box, and an output end of the conveying motor is transmission-connected to the conveyor belt; The loading assembly includes a loading frame, a conveying trough is opened on the right side of the loading frame, and a plurality of C-shaped loading plates are fixedly installed inside the loading frame, and the plurality of C-shaped loading plates are evenly distributed up and down; The movement and correction mechanism includes a guide assembly and a transmission assembly, wherein the guide assembly is assembled on the left side of the transmission assembly, and the guide assembly and the transmission assembly are both composed of a front plate and a back plate, wherein the front plate and the back plate are separated from each other in front and back directions, and a space is formed between the two, and the front and back width of the middle space of the guide assembly is smaller than the front and back width of the middle space of the transmission assembly; The front plate and the back plate are both equipped with a transmission belt and a transmission motor, the output end of the transmission motor is connected to the transmission belt, the upper sides of the front plate and the back plate are fixedly equipped with a pad, and the pad is located below the upper transmission belt. The front plate and the back plate of the transmission assembly are both fixedly equipped with a correction plate, a pressure plate and a pushing cylinder, the left ends of the front plate and the back plate are fixedly equipped with the correction plate, the upper ends of the front plate and the back plate are fixedly equipped with the pressure plate, the inner sides of the front plate and the back plate are fixedly equipped with the pushing cylinder, the pushing cylinder is located below the pressure plate, and the output end of the pushing cylinder is fixedly equipped with an elastic gasket.

2. The anti-deviation automatic placement machine according to claim 1, characterized in that: The front plate is fixedly assembled inside the machine body, the back plate is slidably assembled inside the machine body, the front plate is fixedly assembled with a servo motor, the front plate is rotatably mounted with a ball screw, the output end of the servo motor is transmission-connected to the ball screw, and the movable bearing end of the ball screw is fixedly connected to the back plate.

3. The anti-deviation automatic placement machine according to claim 2, characterized in that: The front plate is fixedly equipped with a sliding rod, and the sliding rod is connected to the back plate in a forward and backward sliding manner.

4. The anti-deviation automatic placement machine according to claim 2, characterized in that: An adjustment frame is installed on the inner side of the loading frame for sliding forward and backward. A number of supporting bars are evenly fixed on the upper and lower parts of the adjustment frame. An adjustment slot is opened on the upper end of the loading frame. A threaded rod is fixed on the upper end of the adjustment frame. A fastening cap is provided on the upper side of the threaded rod for rotating thread.

5. The anti-deviation automatic placement machine according to claim 4, characterized in that: The front side of the C-shaped bearing plate and the bearing bar are both fixedly provided with side baffles and corner blocks.

6. The anti-deviation automatic placement machine according to claim 1, characterized in that: A plurality of lifting rods are fixedly assembled on the inner side of the lifting frame, and linear ball bearings are fixedly assembled on both the front and rear sides of the conveying platform. The lifting rods are connected to the linear ball bearings in an up-and-down sliding manner.

7. The anti-deviation automatic placement machine according to claim 1, characterized in that: The automatic feeding mechanism also includes a conveying assembly, which includes two electric conveyor belts. The right ends of the two electric conveyor belts are respectively fixedly assembled on the upper and lower sides of the left end of the lifting frame.

8. The anti-deviation automatic placement machine according to claim 7, characterized in that: A set of lifting components is also assembled on the left side of the conveying component, and the left ends of the two electric conveyor belts are respectively fixedly assembled on the upper and lower sides of the right end of the lifting frame of the left lifting component.

9. The anti-deviation automatic placement machine according to claim 1, characterized in that: The front plate and the back plate are both rotatably provided with a plurality of transmission rollers connected to the transmission belt transmission, the front plate and the back plate are both slidably equipped with adjustment blocks, the adjustment blocks are rotatably equipped with adjustment rollers, the front plate and the back plate are both fixedly equipped with adjustment cylinders, the output end of the adjustment cylinders is fixedly equipped with a multi-stage telescopic rod, the other end of the multi-stage telescopic rod is fixedly connected to the adjustment block, a spring is fixedly equipped between the adjustment cylinder and the adjustment block, and the spring is sleeved on the outside of the multi-stage telescopic rod.

10. A method for using an anti-deviation automatic placement machine, based on the anti-deviation automatic placement machine according to any one of claims 1 to 9, characterized in that: The following steps are included: First, adjust the width of the inner side of the loading rack according to the width of the circuit board. When adjusting, first loosen the two fastening caps so that the adjustment rack can slide back and forth inside the loading rack. After the adjustment is completed, tighten the two fastening caps. Then, the distance between the front plate and the back plate of the transmission assembly is adjusted according to the width of the circuit board. The servo motor is started to drive the ball screw to rotate, thereby pushing the back plate away from or closer to the front plate, so that the front and back sides of the circuit board can be transported on the front and back conveyor belts of the transmission assembly without protruding outside the two conveyor belts. At this time, the printed circuit board with solder paste is assembled on the C-carrying plate of the loading rack and the carrying bar of the adjustment rack, and the circuit board is limited by the side baffles and corner blocks; after the circuit board is loaded, the conveyor platform of the leftmost lifting rack is lowered, and the loading rack is placed on the lowered conveyor platform, and then the electric slide rail is started to transport the conveyor platform with the loading rack upward to the upper electric conveyor belt. At this time, the conveyor belt of the conveyor platform can be started to move the loading rack to the upper electric conveyor belt for placement, and the left lifting rack can be lowered to load and transport the next group of loading racks; The loading rack on the upper electric conveyor belt can be transported to the conveying platform of the right lifting rack to start the board loading operation. When loading the board, since the front plate and the left side of the back plate of the left guide assembly are both inside the lifting rack on the right, and the conveying platform and the loading rack are respectively provided with slots and conveying slots, the conveying platform of the right lifting rack is controlled to descend at this time, so that the circuit board assembled on the lower side of the loading rack can contact the conveyor belt of the guide assembly. Since the lowering of the conveying platform can make the lower circuit board out of the blocking range of the side baffle and the corner stopper, the conveyor belt can smoothly convey the circuit board. After the loading of the circuit boards on the loading rack is completed, the lower end of the loading rack has moved to a position parallel to the lower electric conveyor belt, and the empty loading rack can be moved to the lower electric conveyor belt by the right conveyor platform and the lower electric conveyor belt to wait, so that the loading rack is transported between the two lifting racks in a cycle. When the PCB moves to the junction of the guide assembly and the conveyor assembly, the two sides of the PCB will contact the side of the correction plate, allowing the PCB to be accurately moved onto the conveyor belt of the conveyor assembly. At this time, the front and back sides of the PCB are both on the conveyor belt of the conveyor assembly, and then it is transported to the patch area along the conveyor belt. When the circuit board moves to the patch area, it is located between the pressure plate and the push cylinder. At this time, the push cylinder is started, and the elastic gasket assembled at the output end of the push cylinder squeezes the conveyor belt and the circuit board. The pressure plate and the elastic gasket are used to fix the circuit board in place, ensuring that after the placement module is initially positioned, the circuit board will not move during the placement process. Finally, after the placement is completed, the cylinder is pushed to drive the elastic gasket at its output end to move downward and contact the fixed limit, and the mounted circuit board will move to the next process along the conveyor belt.

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