Deviation correcting device for SMT patch production and processing

Abstract

The invention belongs to the technical field of SMT (surface mount technology), and particularly relates to an SMT production and processing deviation rectifying device which comprises an SMT mechanism and two supports, a conveying belt is arranged between the two supports, the SMT mechanism is arranged on the rear side of the conveying belt, a sliding seat is arranged between the two supports in a sliding manner, a magnetic strip is mounted at the upper end of the sliding seat, and the magnetic strip is arranged on the upper end of the sliding seat. A plurality of iron bars matched with the magnetic strips are installed on the inner side of the conveying belt, a fixing plate is installed on the rear sides of the two supports, a first spring is arranged between the sliding base and the fixing plate, and positioning mechanisms are arranged at the left end and the right end of the sliding base. In the working process of the conveying belt, the sliding base can synchronously move along with the conveying belt through the adsorption effect of the magnetic strip and the iron strip, positioning and deviation rectifying are conducted on the left side and the right side of the circuit board through the positioning rod in the positioning mechanism, additional electrical components are not needed through the design, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of SMT patches, and in particular relates to a deviation correction device for production and processing of SMT patches. Background Art

[0002] SMT placement machines are key equipment used in electronic manufacturing for automated assembly of surface mount technology components. They use precision robotic arms and vision systems to pick up electronic components from trays at high speed and precision and accurately place them at predetermined locations on printed circuit boards (PCBs), thereby achieving large-scale, efficient and stable quality production of electronic products.

[0003] In the prior art, a conveyor belt is used to transport a circuit board to the working area of ​​a placement machine. During the placement process, the conveyor belt is controlled to pause to stop the movement of the circuit board. However, this method has certain problems. When the conveyor belt stops working, the position of the circuit board cannot be accurately located, further affecting the accuracy of the placement. Summary of the invention

[0004] The purpose of the present invention is to provide a deviation correction device for SMT patch production and processing, so as to solve the problems raised in the background technology.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A deviation correction device for SMT patch production and processing, comprising the SMT patch mechanism and two brackets, a conveyor belt is provided between the two brackets, the SMT patch mechanism is arranged at the rear side of the conveyor belt, a slide seat is slidably provided between the two brackets, a magnetic strip is installed at the upper end of the slide seat, a plurality of iron strips matching the magnetic strip are installed at the inner side of the conveyor belt, a fixing plate is installed at the rear side of the two brackets, a first spring is provided between the slide seat and the fixing plate, and positioning mechanisms are provided at both left and right ends of the slide seat;

[0007] The positioning mechanism includes a strip plate fixed to the side wall of the slide seat, a slide groove is provided in the middle of the strip plate, an L-shaped rod is slidably installed in the slide groove, a positioning rod is fixed to the upper end of the L-shaped rod, a second spring is provided between the side of the L-shaped rod away from the conveyor belt and the side wall of the slide groove, a fixing seat located at the lower side of the strip plate is fixed to the side wall of the bracket, a guide groove is provided in the fixing seat, a guide rod located in the guide groove is fixed to the lower end of the L-shaped rod, and the guide groove is composed of a vertical groove and two oblique grooves, and the two oblique grooves are respectively arranged at the front and rear ends of the vertical groove.

[0008] The positioning rod is provided with circular grooves on both the front and rear sides, a slide plate is slidably provided in the circular groove, a circular rod is rotatably installed on one side of the slide plate, the end of the circular rod extends out of the circular groove and is connected to a toggle rod, a spiral groove is provided on the side wall of the circular groove, a straight groove connected to the end of the spiral groove is provided on the side wall of the circular groove, a guide block matching the spiral groove is fixed to the toggle rod, and the slide plate is provided with a pulling assembly.

[0009] The pulling assembly includes a movable groove provided inside the guide rod, a movable block is slidably provided in the movable groove, a third spring is provided between the upper side of the movable block and the side wall of the movable groove, the movable block and the slide plate are connected by a pull wire, an abutment rod is fixed to the lower end of the movable block, an abutment plate matching the abutment rod is fixed to the bottom of the fixed seat, a groove is provided in the middle of the abutment plate, the groove is located between the two inclined grooves, a fourth spring is provided between the slide plate and the side wall of the circular groove, and the elastic force of the third spring is greater than the sum of the elastic forces of the two fourth springs.

[0010] The surface of the conveyor belt is provided with identification frames matching with the plurality of iron bars.

[0011] A sleeve is installed on the rear side of the fixed plate, a piston rod sliding in the sleeve is fixed to the slide seat, a connecting rod is fixed to the front side of the slide seat, a nozzle is installed on the upper end of the connecting rod, a one-way air outlet channel is opened in the middle of the piston rod, the one-way air outlet channel extends to the upper end of the connecting rod and is connected with the nozzle through a hose, and a one-way air inlet is provided on the rear side of the sleeve.

[0012] A U-shaped seat is installed at the upper end of the connecting rod, and a rotating block is rotatably installed in the U-shaped seat through a rotating shaft. The rotating block is connected to the nozzle, and a cavity is opened in the U-shaped seat. The rotating shaft extends into the cavity and is connected to a gear. A rack meshing with the gear is slidably provided in the cavity, and a fifth spring is provided between the upper end of the rack and the cavity, a pushing rod extending out of the cavity is fixed to the lower end of the rack, and a boss matching the pushing rod is fixed to the upper end of the bracket.

[0013] During the operation of the conveyor belt, the slide can move synchronously with the conveyor belt through the adsorption effect of the magnetic strip and the iron strip, and the positioning rod in the positioning mechanism is used to position and correct the left and right sides of the circuit board. This design does not require additional electrical components. Compared with the prior art, the circuit board is positioned and corrected after it moves to the bottom of the SMT patch mechanism. The present application performs positioning and correction during the transportation process, which reduces waiting time and improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0015] Figure 1 It is a structural schematic diagram of an embodiment of a deviation correction device for SMT patch production and processing of the present invention;

[0016] Figure 2 It is a schematic diagram of the overall structure of the transmission belt of the present invention;

[0017] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0018] Figure 4 The cross-sectional structure of the transmission belt of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 5 for Figure 4 A schematic diagram of the structure enlarged at B in the middle;

[0020] Figure 6 The cross-sectional structure of the transmission belt of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 7 for Figure 6 A schematic diagram of the structure enlarged at C in the middle;

[0022] Figure 8 The cross-sectional structure of the transmission belt of the present invention is shown in FIG. Figure 3 ;

[0023] Fig. 9 for Figure 8 A schematic diagram of the structure at D in the middle is enlarged;

[0024] Fig.10 The cross-sectional structure of the transmission belt of the present invention is shown in FIG. Figure 4 ;

[0025] Fig.11 for Fig.10 Enlarged schematic diagram of the structure at E in the middle.

[0026] The main component symbols are described as follows:

[0027] SMT patch mechanism 0, bracket 01, conveyor belt 1, identification frame 101, slide 12, magnetic strip 13, iron strip 14, fixing plate

[0028] 15, first spring 16, strip plate 2, slide groove 21, L-shaped rod 22, positioning rod 23, second spring 24, fixed seat 25, guide groove 26, vertical groove 261, oblique groove 262, guide rod 27, circular groove 3, slide plate 31, circular rod 32, toggle rod 33, spiral groove 34, straight groove 35, guide block 36, movable groove 4, movable block 41, third spring 42, pull wire 43, abutment rod 44, abutment plate 45, groove 46, fourth spring 47, sleeve 5, piston rod 51, connecting rod 52, nozzle 53, one-way air outlet channel 54, hose 55, U-shaped seat 6, rotating block 61, cavity 62, gear 63, rack 64, fifth spring 65, push rod 66, boss 67. DETAILED DESCRIPTION

[0029] 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 in conjunction with the accompanying drawings and embodiments.

[0030] like Figure 1-11 As shown, a deviation correction device for SMT patch production and processing of the present invention comprises an SMT patch mechanism 0 and two brackets 01, a conveyor belt 1 is arranged between the two brackets 01, the SMT patch mechanism 0 is arranged at the rear side of the conveyor belt 1, a slide seat 12 is slidably arranged between the two brackets 01, a magnetic strip 13 is installed on the upper end of the slide seat 12, a plurality of iron strips 14 matching the magnetic strip 13 are installed on the inner side of the conveyor belt 1, a fixing plate 15 is installed on the rear side of the two brackets 01, a first spring 16 is arranged between the slide seat 12 and the fixing plate 15, and positioning mechanisms are arranged at both left and right ends of the slide seat 12;

[0031] The positioning mechanism includes a strip plate 2 fixed to the side wall of the slide seat 12, a slide groove 21 is opened in the middle of the strip plate 2, an L-shaped rod 22 is slidably assembled in the slide groove 21, a positioning rod 23 is fixed to the upper end of the L-shaped rod 22, a second spring 24 is provided between the side of the L-shaped rod 22 away from the conveyor belt 1 and the side wall of the slide groove 21, a fixing seat 25 located on the lower side of the strip plate 2 is fixed to the side wall of the bracket 01, the fixing seat 25 is opened with a guide groove 26, a guide rod 27 located in the guide groove 26 is fixed to the lower end of the L-shaped rod 22, and the guide groove 26 is composed of a vertical groove 261 and two oblique grooves 262, and the two oblique grooves 262 are respectively arranged at the front and rear ends of the vertical groove 261.

[0032] In the initial state, the guide rod 27 is located at the end of the inclined slot 262 on the front side, and the positioning rod 23 is away from the middle of the conveyor belt 1;

[0033] When in use, the external feeding device evenly conveys the circuit board to be processed to the conveyor belt 1, ensuring that each circuit board is located above the iron bar 14 of the conveyor belt 11, and then the conveyor belt 1 conveys the circuit board to the bottom of the SMT patch mechanism 0 for patch processing;

[0034] The conveyor belt 1 works to convey the circuit board to the SMT patch mechanism 0. When the iron bar 14 of the conveyor belt 1 moves to the top of the magnetic strip 13 of the slide 12, the iron bar 14 will be adsorbed by the magnetic strip 13, and the slide 12 can be driven to move backward synchronously with the conveyor belt 1. Then the guide rod 27 will slide along the front side inclined groove 262 into the vertical groove 261, driving the positioning rod 23 to slide toward the middle of the conveyor belt 1, and the width of the vertical groove 262 is greater than the guide rod 27. In this way, the elastic force of the second spring 24 can push the positioning rod 23 to abut against the left and right ends of the circuit board to correct the deviation of the circuit board until the circuit board moves to the bottom of the SMT patch mechanism 0, the conveyor belt 1 stops working, and the SMT patch mechanism 0 can perform the patch work on the circuit board. Such a design can automatically correct the deviation of the circuit board during the process of conveying the circuit board without the need for additional electrical components. Compared with the prior art, the circuit board is positioned and corrected after the circuit board moves to the bottom of the SMT patch mechanism. This application can omit this action and improve the processing efficiency.

[0035] When the circuit board is located below the SMT patch mechanism 0, the guide rod 27 is located at the rear end of the vertical slot 261. When the conveyor belt 1 continues to work to transport the circuit board, the guide rod 27 will enter the rear inclined slot 262, and the positioning rod 23 will be away from the circuit board. The slide 12 cannot continue to slide backward, and the magnetic strip 14 and the iron strip 15 will be separated from the adsorption. The slide 12 is reset forward by the elastic force of the first spring 16, waiting for the next iron strip 15 to move to the upper side of the slide 12.

[0036] A circular groove 3 is provided on both the front and rear sides of the positioning rod 23, a slide plate 31 is slidably provided in the circular groove 3, a circular rod 32 is rotatably installed on one side of the slide plate 31, the end of the circular rod 32 extends out of the circular groove 3 and is connected to a toggle rod 33, a spiral groove 34 is provided on the side wall of the circular groove 3, a straight groove 35 connected to the end of the spiral groove 34 is provided on the side wall of the circular groove 3, a guide block 36 matching the spiral groove 34 is fixed to the toggle rod 33, and the slide plate 31 is provided with a pulling assembly.

[0037] The pulling assembly includes a movable groove 4 provided inside the guide rod 27, a movable block 41 is slidably provided in the movable groove 4, a third spring 42 is provided between the upper side of the movable block 41 and the side wall of the movable groove 4, the movable block 41 and the slide plate 31 are connected by a pull wire 43, an abutment rod 44 is fixed to the lower end of the movable block 41, an abutment plate 45 matching the abutment rod 44 is fixed to the bottom of the fixed seat 25, a groove 46 is provided in the middle of the abutment plate 45, the groove 46 is located between the two oblique grooves 262, a fourth spring 47 is provided between the slide plate 31 and the side wall of the circular groove 3, and the elastic force of the third spring 42 is greater than the sum of the elastic forces of the two fourth springs 47.

[0038] In the initial state, the bottom of the abutment rod 44 abuts against the abutment plate 45, and the slide plate 31 is located at the end of the circular groove 3. At this time, the toggle rod 33 is in a vertical state. When the guide rod 27 moves into the vertical groove 261, the positioning rod 23 clamps the left and right sides of the circuit board, and the strip plate 2 continues to slide backward. At this time, the abutment rod 44 moves backward to move into the groove 46. The elastic force of the third spring 42 pushes the movable block 41 to move downward. The slide plate 31 is pulled by the pull wire 43, and the guide block 36 fixed by the circular rod 32 moves in the spiral groove 34, which will drive the circular rod 32 to rotate to a horizontal state. Then the guide block 36 enters the straight groove 35, so that the toggle rod 33 keeps this state and approaches the circuit board to position the front and back sides of the circuit board.

[0039] After the circuit board patch processing is completed, the conveyor belt 1 continues to work to transport the circuit board, and the abutment rod 44 abuts against the side wall of the groove 46 and moves to the upper end of the abutment plate 45. The elastic force of the fourth spring 47 pushes the toggle rod 33 away from the circuit board, and the guide rod 27 enters the inclined groove 262, driving the positioning rod 23 away from the circuit board, thereby canceling the clamping of the circuit board.

[0040] The surface of the conveyor belt 1 is provided with an identification frame 101 that matches the plurality of iron bars 14 ; the identification frame 101 can be used to determine whether the position of the circuit board corresponds to the iron bar 25 to prevent errors.

[0041] A sleeve 5 is installed on the rear side of the fixed plate 15, a piston rod 51 sliding in the sleeve 5 is fixed to the slide 12, a connecting rod 52 is fixed to the front side of the slide 12, a nozzle 53 is installed on the upper end of the connecting rod 52, a one-way air outlet channel 54 is opened in the middle of the piston rod 51, the one-way air outlet channel 54 extends to the upper end of the connecting rod 52 and is connected with the nozzle 53 through a hose 55, and a one-way air inlet is provided on the rear side of the sleeve 5.

[0042] A U-shaped seat 6 is installed at the upper end of the connecting rod 52, and a rotating block 61 is rotatably installed in the U-shaped seat 6 through a rotating shaft. The rotating block 61 is connected to the nozzle 53, and a cavity 62 is opened in the U-shaped seat 6. The rotating shaft extends into the cavity 62 and is connected to a gear 63. A rack 64 meshing with the gear 63 is slidably provided in the cavity 62, and a fifth spring 65 is provided between the upper end of the rack 64 and the cavity 62. A push rod 66 extending out of the cavity 62 is fixed to the lower end of the rack 64, and a boss 67 matching the push rod 66 is fixed to the upper end of the bracket 01.

[0043] When a circuit board on the conveyor belt 1 is adsorbed by the corresponding iron bar 14 and the magnetic bar 13, the position of the next circuit board on the conveyor belt 1 will correspond to the nozzle 53. When the slide seat 12 slides backward, the piston rod 51 can slide backward in the sleeve 5 to push the internal air into the hose 55 through the one-way air outlet channel 54, and finally spray it from the several air outlets on the nozzle 53 to the surface of the circuit board. The connecting rod 52 moves backward, and the push rod 66 will abut against the inclined surface of the boss 67, pushing the push rod 66 to move upward, then the rack 64 slides upward in the cavity 62, driving the gear 63 to rotate, and then driving the nozzle 53 to flip. Therefore, the impurities on the surface of the circuit board can be blown away by the rotating air outlet of the nozzle 53 to prevent the impurities from affecting the subsequent patch work of the circuit board.

[0044] When the slide seat 12 is reset, the piston rod 51 moves forward, and the outside air is drawn into the sleeve 5 through the one-way air inlet, so as to prepare for the next circuit board to be cleaned.

[0045] 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 familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A correction device for SMT patch production and processing, comprising the SMT patch mechanism and two brackets, a conveyor belt is arranged between the two brackets, and the SMT patch mechanism is arranged at the rear side of the conveyor belt, characterized in that: A slide seat is slidably arranged between the two brackets, a magnetic strip is installed on the upper end of the slide seat, a plurality of iron strips matching the magnetic strip are installed on the inner side of the conveyor belt, a fixing plate is installed on the rear side of the two brackets, a first spring is arranged between the slide seat and the fixing plate, and positioning mechanisms are arranged on both the left and right ends of the slide seat; The positioning mechanism includes a strip plate fixed to the side wall of the slide seat, a slide groove is provided in the middle of the strip plate, an L-shaped rod is slidably installed in the slide groove, a positioning rod is fixed to the upper end of the L-shaped rod, a second spring is provided between the side of the L-shaped rod away from the conveyor belt and the side wall of the slide groove, a fixing seat located at the lower side of the strip plate is fixed to the side wall of the bracket, a guide groove is provided in the fixing seat, a guide rod located in the guide groove is fixed to the lower end of the L-shaped rod, and the guide groove is composed of a vertical groove and two oblique grooves, and the two oblique grooves are respectively arranged at the front and rear ends of the vertical groove.

2. The SMT patch production and processing correction device according to claim 1 is characterized by: The positioning rod is provided with circular grooves on both the front and rear sides, a slide plate is slidably provided in the circular groove, a circular rod is rotatably installed on one side of the slide plate, the end of the circular rod extends out of the circular groove and is connected to a toggle rod, a spiral groove is provided on the side wall of the circular groove, a straight groove connected to the end of the spiral groove is provided on the side wall of the circular groove, a guide block matching the spiral groove is fixed to the toggle rod, and the slide plate is provided with a pulling assembly.

3. The SMT patch production and processing correction device according to claim 2 is characterized by: The pulling assembly includes a movable groove provided inside the guide rod, a movable block is slidably provided in the movable groove, a third spring is provided between the upper side of the movable block and the side wall of the movable groove, the movable block and the slide plate are connected by a pull wire, an abutment rod is fixed to the lower end of the movable block, an abutment plate matching the abutment rod is fixed to the bottom of the fixed seat, a groove is provided in the middle of the abutment plate, the groove is located between the two inclined grooves, a fourth spring is provided between the slide plate and the side wall of the circular groove, and the elastic force of the third spring is greater than the sum of the elastic forces of the two fourth springs.

4. The SMT patch production and processing correction device according to claim 1 is characterized by: The surface of the conveyor belt is provided with identification frames matching with the plurality of iron bars.

5. The SMT patch production and processing correction device according to claim 1 is characterized by: A sleeve is installed on the rear side of the fixed plate, a piston rod sliding in the sleeve is fixed to the slide seat, a connecting rod is fixed to the front side of the slide seat, a nozzle is installed on the upper end of the connecting rod, a one-way air outlet channel is opened in the middle of the piston rod, the one-way air outlet channel extends to the upper end of the connecting rod and is connected with the nozzle through a hose, and a one-way air inlet is provided on the rear side of the sleeve.

6. The SMT patch production and processing correction device according to claim 5 is characterized by: A U-shaped seat is installed at the upper end of the connecting rod, and a rotating block is rotatably installed in the U-shaped seat through a rotating shaft. The rotating block is connected to the nozzle, and a cavity is opened in the U-shaped seat. The rotating shaft extends into the cavity and is connected to a gear. A rack meshing with the gear is slidably provided in the cavity, and a fifth spring is provided between the upper end of the rack and the cavity, a pushing rod extending out of the cavity is fixed to the lower end of the rack, and a boss matching the pushing rod is fixed to the upper end of the bracket.

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