Feeding and conveying device for circuit board side edge grinding

Abstract

The invention discloses a feeding conveying device for circuit board side edge grinding, and relates to the field of circuit board conveying, the feeding conveying device comprises a rotary workbench, a stacking conveying belt and a feeding platform are sequentially arranged on the outer side of the rotary workbench in the circumferential direction of the rotary workbench, and a plurality of feeding conveying mechanisms are evenly distributed on the rotary workbench in the circumferential direction; the feeding conveying mechanism comprises a lifting box body, a rectangular window is formed in the side, close to the feeding platform, of the lifting box body, and a plurality of supporting partition plates are fixed in the rectangular window at equal intervals in the axial direction of the rotary workbench. The feeding platform comprises a horizontal positioning table, a transverse positioning plate and a longitudinal positioning plate, the transverse positioning plate and the longitudinal positioning plate are fixed to the two side edges of the horizontal positioning table respectively, two conveying grooves are formed in the horizontal positioning table in a penetrating mode, positioning conveying belts are arranged in the conveying grooves, and a push plate is arranged on the top face of the horizontal positioning table; and the moving direction of the push plate is perpendicular to the moving direction of the positioning conveying belt, the feeding position of the circuit board is more accurate, and subsequent circuit board grinding operation is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board conveying, and in particular to a feeding and conveying device used for grinding the side edges of circuit boards. Background Art

[0002] In the batch production of circuit boards, the circuit boards are output in a continuous board, and there are folding stamps between adjacent circuit boards. The folding stamps can be used to separate adjacent circuit boards. At this time, the separated circuit boards have many burrs and rough edges on the side, and the side of the circuit board needs to be polished. During the polishing process, a loading and conveying device is needed to load the circuit board to be polished to the polishing station. At present, the combination of conveyor belt and vacuum adsorption clamping is basically used for loading. However, the conveying position of the circuit board on the conveyor belt is inconsistent, and the accurate loading of the circuit board cannot be achieved; secondly, the conveying frequency of the circuit board on the conveyor belt cannot be determined, and it is difficult to adapt to the loading frequency of the polishing equipment. Therefore, most of them adopt the method of stacking first and then loading, that is, the staff stacks multiple groups of circuit boards neatly together, and then loads the stacked circuit boards in turn. However, the stacking method is not suitable for the polishing field, mainly because there are many burrs on the side of the circuit board, and the stacked circuit boards are easily scratched by burrs, which affects the quality of the circuit board. Secondly, the manual stacking method has high labor costs and low stacking efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a feeding and conveying device for grinding the side edges of circuit boards, so as to solve the deficiencies of the prior art.

[0004] The objective of the present invention is achieved through the following technical solutions: a feeding and conveying device for grinding the side of a circuit board, comprising a rotating worktable, a material-encoding conveying belt and a feeding platform are sequentially arranged on the outer side of the rotating worktable along its own circumferential direction, a plurality of feeding and conveying mechanisms are evenly distributed on the rotating worktable in a circumferential manner, the feeding and conveying mechanism comprises a lifting box, the lifting box has the freedom to move along the axial direction of the rotating worktable, a rectangular window is opened on one side of the lifting box close to the feeding platform, and a plurality of supporting partitions are fixed in the rectangular window at equal intervals along the axial direction of the rotating worktable; The loading platform includes a horizontal positioning platform, a transverse positioning plate and a longitudinal positioning plate, the transverse positioning plate is fixed on the top of the horizontal positioning platform away from one end of the lifting box body, the longitudinal positioning plate is fixed on one side of the horizontal positioning platform, two conveying grooves are opened through the horizontal positioning platform, and a positioning conveyor belt is arranged in the conveying groove, and the positioning conveyor belt is used to convey the circuit board in the lifting box body to the transverse positioning plate, and a push plate is provided on the top surface of the horizontal positioning platform, and the moving direction of the push plate is perpendicular to the moving direction of the positioning conveyor belt, and the push plate is used to convey the circuit board to the longitudinal positioning plate; It also includes a gantry conveying mechanism, which is used to load the circuit board on the loading platform to the polishing station, and the lifting box is used to stack materials from top to bottom and load materials from bottom to top.

[0005] Furthermore, a plurality of rectangular grooves are formed on the top surface of the support partition at equal intervals along the coding and conveying direction of the circuit board, a rotating shaft is rotatably arranged in the rectangular groove, a support roller is fixedly sleeved on the rotating shaft, and the top surface height of the support roller is higher than the top surface height of the support partition.

[0006] Furthermore, one end of the rotating shaft passes through the supporting partition and is connected to a gear, an intermediate gear is arranged between two adjacent rotating shafts, the intermediate gear is rotatably connected to the supporting partition via an intermediate shaft, the intermediate gear meshes with the gear, and a rack is vertically fixed on one side of each lifting box body, one of the intermediate shafts passes through the lifting box body and is connected to a driving gear, and the driving gear meshes with the rack.

[0007] Furthermore, a lifting mechanism is provided on the side of the lifting box away from the rectangular window, and the lifting mechanism includes a lifting pillar and a lifting plate. A screw groove is provided on the side of the lifting pillar close to the lifting box, a screw is rotatably arranged in the screw groove, a screw slider is threadedly mounted on the screw, and the screw slider is slidably adapted to the screw groove, and the two ends of the lifting plate are respectively connected to the screw slider and the lifting box, and a screw motor is installed on the top of the lifting pillar, and the output shaft of the screw motor is transmission-connected to the screw.

[0008] Furthermore, a lifting control mechanism is provided on one side of the lifting box body, and the lifting control mechanism includes a control base, a slider, an insert and a pressure sensor. A control groove is provided on the side of the control base close to the lifting box body, and the pressure sensor is installed in the control groove. The slider is slidably arranged in the control groove. The end of the slider close to the pressure sensor is connected to a spring, and the end of the spring away from the slider is connected to a pressure plate, the pressure plate contacts the pressure test axis of the pressure sensor, and the end of the slider away from the spring is connected to the insert. A control socket is provided on the side of the lifting box body close to the control base corresponding to each supporting partition. When the insert is inserted into one of the control sockets, the corresponding supporting partition faces the material stacking conveyor belt for stacking or faces the loading platform for loading. The top and bottom surfaces of the insert are provided with wedge-shaped surfaces. When the lifting box body is in the lowest position, the insert is inserted into the control socket at the highest position.

[0009] Furthermore, the conveying frames of the two positioning conveyor belts are connected together by a connecting plate, and a height adjustment cylinder is vertically arranged below the connecting plate. The telescopic shaft of the height adjustment cylinder is connected to the connecting plate, and the end of the push plate away from the longitudinal positioning plate is connected to the telescopic shaft of the pushing cylinder. The cylinder body of the pushing cylinder is installed on the horizontal positioning platform.

[0010] Furthermore, a distance sensor is embedded in the end surface of the push plate close to the longitudinal positioning plate.

[0011] Furthermore, the gantry conveying mechanism includes a gantry, a walking beam, a walking slide, a lifting seat, a rotating plate and a negative pressure feeding pipe, one end of the walking beam is slidably set on the gantry, the walking slide is slidably set on the walking beam, the moving direction of the walking beam is perpendicular to the moving direction of the walking slide on the horizontal plane, the lifting seat is set below the walking slide, the lifting seat has the freedom to move along the height direction of the gantry, the rotating plate is rotatably set at the bottom of the lifting seat, and the negative pressure feeding pipe is installed at the bottom of the rotating plate.

[0012] Furthermore, the gantry is provided with a first screw rod groove in the horizontal direction, a first screw rod is rotatably arranged in the first screw rod groove, the walking beam is threadedly mounted on the first screw rod, the walking beam is slidably adapted to the first screw rod groove, a first motor is installed on the gantry, the output shaft of the first motor is transmission-connected to the first screw rod, a second screw rod groove is provided at the bottom of the walking beam, a second screw rod is rotatably arranged in the second screw rod groove, a translation slider is threadedly mounted on the second screw rod, the walking slide is connected to the translation slide, a lifting cylinder is vertically installed on the walking slide, the telescopic shaft of the lifting cylinder is connected to the lifting seat, the rotating plate is rotationally connected to the lifting seat through a main shaft, a driving motor is installed on the top of the lifting seat, and the output shaft of the driving motor is transmission-connected to the main shaft.

[0013] Furthermore, a switching spindle is coaxially fixed to the bottom of the rotating worktable, and one end of the switching spindle away from the rotating worktable is rotatably mounted on a conveying base. A switching motor is arranged in the conveying base, and an output shaft of the switching motor is drivingly connected to the switching spindle.

[0014] The beneficial effects of the present invention are: 1. Use multiple supporting partitions to stack the circuit boards in the lifting box to avoid damage to the circuit boards caused by mutual influence between the circuit boards.

[0015] 2. The circuit board is automatically transported to the lifting box through the stacking conveyor belt. Through the movement of the lifting box, each supporting partition corresponds to the output position of the stacking conveyor belt in turn, so that the circuit board is automatically stacked in the lifting box, which improves the stacking efficiency and reduces the labor cost.

[0016] 3. The palletizing-completed lifting box is switched to the loading station by the rotation of the rotary table. At the same time, the next lifting box moves to the palletizing position to palletize the circuit boards, realizing the switching between palletizing and grinding and loading, so that the palletizing and grinding and loading of the circuit boards can be carried out continuously.

[0017] 4. Move the circuit board close to the transverse positioning plate through the positioning conveyor belt, position the transverse side of the circuit board through the transverse positioning plate, and then push the circuit board toward the longitudinal positioning plate through the push plate, and position the longitudinal side of the circuit board through the longitudinal positioning plate, thereby completing the positioning of the circuit board on the horizontal plane, making the loading position of the gantry conveying mechanism more accurate, which is convenient for the subsequent circuit board grinding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of a feeding and conveying device for grinding the side of a circuit board according to the present invention is shown in FIG. Figure 1 ; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 The structure of a feeding and conveying device for grinding the side of a circuit board according to the present invention is shown in FIG. Figure 2 ; Figure 4 The structure of a feeding and conveying device for grinding the side of a circuit board according to the present invention is shown in FIG. Figure 3 ; Figure 5 It is a side view of a supporting partition in a feeding and conveying device for grinding the side edge of a circuit board according to the present invention; Figure 6 It is a schematic diagram of the internal structure of a control base in a feeding and conveying device for grinding the side edge of a circuit board according to the present invention; Figure 7 The structure of a feeding and conveying device for grinding the side of a circuit board according to the present invention is shown in FIG. Figure 4 ; In the figure, 1-rotating workbench, 2-lifting box, 3-stack conveyor belt, 4-loading platform, 5-rectangular window, 6-support partition, 7-horizontal positioning platform, 8-lateral positioning plate, 9-conveyor trough, 10-positioning conveyor belt, 11-push plate, 12-longitudinal positioning plate, 13-rectangular groove, 14-rotating shaft, 15-support roller, 16-gear, 17-intermediate gear, 18-rack, 19-driving gear, 20-intermediate shaft, 21-lifting pillar, 22-lifting plate, 23-screw groove, 24-screw, 25-screw slider, 26-screw motor, 27-control base, 28-slider, 29-insert, 30 -pressure sensor, 31-control groove, 32-spring, 33-pressure plate, 34-control socket, 35-wedge surface, 36-connecting plate, 37-height adjustment cylinder, 38-pushing cylinder, 39-distance sensor, 40-gantry, 41-travel beam, 42-lifting seat, 43-rotating plate, 44-negative pressure feeding pipe, 45-travel slide, 46-first screw groove, 47-first screw, 48-first motor, 49-second screw groove, 50-second screw, 51-lifting cylinder, 52-spindle, 53-drive motor, 54-switching spindle, 55-conveying base, 56-baffle, 57-horizontal cylinder. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0020] Embodiment 1: Figures 1 to 7As shown, a feeding and conveying device for grinding the side of a circuit board comprises a rotating worktable 1, on the outer side of the rotating worktable 1 there are arranged a material-encoding conveying belt 3 and a feeding platform 4 in sequence along its circumferential direction, a plurality of feeding and conveying mechanisms are evenly distributed on the rotating worktable 1 in a circular pattern, the feeding and conveying mechanisms comprise a lifting box 2, the lifting box 2 has the freedom to move along the axial direction of the rotating worktable 1, a rectangular window 5 is provided on one side of the lifting box 2 close to the feeding platform 4, a plurality of supporting partitions 6 are fixed at equal intervals along the axial direction of the rotating worktable 1 in the rectangular window 5, a switching spindle 54 is coaxially fixed to the bottom of the rotating worktable 1, the end of the switching spindle 54 away from the rotating worktable 1 is rotatably mounted on a conveying base 55, a switching motor is arranged in the conveying base 55, the output shaft of the switching motor is transmission-connected to the switching spindle 54, the switching motor drives the switching spindle 54 to rotate, and the switching spindle 54 The rotating workbench 1 is driven to make the lifting box 2 cycle between stacking and grinding and loading. When one of the lifting boxes 2 is grinding and loading, the other lifting box 2 is performing the stacking operation, so that the stacking and loading of the circuit boards can be carried out simultaneously, thereby reducing the difficulty of matching the stacking, conveying and loading; during stacking, the rectangular window 5 of the lifting box 2 corresponds to the output end of the stacking conveyor belt 3, and the uppermost supporting partition 6 first corresponds to the stacking conveyor belt 3, and the circuit boards are transported to the supporting partition 6 through the stacking conveyor belt 3. The lifting box 2 moves upward, so that the supporting partition 6 moves up in turn to correspond to the stacking conveyor belt 3, so that the circuit boards are stacked in turn from top to bottom, realizing automatic stacking operation, improving stacking efficiency and reducing labor costs; secondly, the circuit boards are stacked in intervals in the lifting box 2 through multiple supporting partitions 6 to avoid damage to the circuit boards caused by mutual influence between the circuit boards;The loading platform 4 includes a horizontal positioning platform 7, a transverse positioning plate 8 and a longitudinal positioning plate 12. The horizontal positioning platform 7 is fixed with a transverse positioning plate 8 on the top of one end away from the lifting box 2, and a longitudinal positioning plate 12 is fixed on one side of the horizontal positioning platform 7. Two conveying grooves 9 are opened through the horizontal positioning platform 7, and a positioning conveyor belt 10 is arranged in the conveying groove 9. The positioning conveyor belt 10 is used to convey the circuit board in the lifting box 2 to the transverse positioning plate 8. The top surface of the horizontal positioning platform 7 is provided with a push plate 11. The moving direction of the push plate 11 is perpendicular to the moving direction of the positioning conveyor belt 10. The push plate 11 is used to convey the circuit board to the longitudinal positioning plate 12. It also includes a gantry conveying mechanism. The gantry conveying mechanism is used to load the circuit board on the loading platform 4 to the grinding station. The lifting box 2 is stacked from top to bottom and loaded from bottom to top. The stacked lifting box 2 is loaded correspondingly by the rotation of the rotating workbench 1 Platform 4, during the process of the lifting box 2 being transferred from the stacking station to the loading station, the height of the lifting box 2 does not need to be changed, so that the lowest supporting partition 6 of the lifting box 2 corresponds to the loading platform 4. During the loading process, the height of the lifting box 2 is lowered in sequence to load the materials from bottom to top. While the circuit boards in the lifting box 2 are loaded in sequence, the lifting box 2 is reset, so that the lifting box 2 can directly rotate the corresponding stacking conveyor belt to stack the circuit boards. During the loading process, the circuit board is moved close to the horizontal positioning plate 8 through the positioning conveyor belt 10, and the horizontal side of the circuit board is positioned by the horizontal positioning plate 8. Then, the circuit board is pushed toward the longitudinal positioning plate 12 by the push plate 11, and the longitudinal side of the circuit board is positioned by the longitudinal positioning plate 12, thereby completing the positioning of the circuit board on the horizontal plane, making the loading position of the gantry conveying mechanism more accurate, which is convenient for the subsequent circuit board grinding operation. In specific implementation, the opening of the rectangular window 5 is larger than the width of the stacking conveyor belt 3, so that circuit boards in any state can be conveyed to the supporting partition 6 in the rectangular window 5, so that circuit boards in different states can be stacked in the lifting box 2. ;

[0021] Embodiment 2: Figure 1 and Figure 2As shown, due to the different stacking states of the circuit boards on the stacking conveyor belt 3, there are two states of the circuit boards after they are positioned on the loading platform 4. One is that the width side of the circuit board contacts the transverse positioning plate and the length side contacts the longitudinal positioning plate 12. The other is that the length side of the circuit board contacts the transverse positioning plate and the width side contacts the longitudinal positioning plate 12. In order to keep the state of the circuit board consistent on the loading platform 4, on the basis of Example 1, a distance sensor 39 is embedded on the end face of the push plate 11 close to the longitudinal positioning plate 12. After the push plate 11 pushes the circuit board toward the longitudinal positioning plate 12 to complete the positioning, the distance sensor 39 is used to detect the distance between the push plate 11 and the longitudinal positioning plate 12, thereby detecting the length of the circuit board along the moving direction of the push plate 11, and then judging the state of the circuit board on the loading platform 4, so that the gantry conveying mechanism can make corresponding actions in time according to the state of the circuit board.

[0022] Embodiment 3: Based on Embodiment 2, Figures 1 to 7As shown, the gantry conveying mechanism includes a gantry 40, a walking beam 41, a walking slide 45, a lifting seat 42, a rotating plate 43 and a negative pressure feeding pipe 44. One end of the walking beam 41 is slidably set on the gantry 40, the walking slide 45 is slidably set on the walking beam 41, the moving direction of the walking beam 41 is perpendicular to the moving direction of the walking slide 45 on the horizontal plane, the lifting seat 42 is set below the walking slide 45, and the lifting seat 42 has the freedom to move along the height direction of the gantry 40. The rotating plate 43 is rotatably set at the bottom of the lifting seat 42, the negative pressure feeding pipe 44 is installed at the bottom of the rotating plate 43, and the gantry 40 is opened in the horizontal direction. There is a first screw rod groove 46, in which a first screw rod 47 is rotatably arranged, a walking beam 41 is threadedly mounted on the first screw rod 47, and the walking beam 41 is slidably adapted to the first screw rod groove 46, a first motor 48 is installed on the gantry 40, and the output shaft of the first motor 48 is connected to the first screw rod 47 by transmission, a second screw rod groove 49 is provided at the bottom of the walking beam 41, a second screw rod 50 is rotatably arranged in the second screw rod groove 49, a translation slider is threadedly mounted on the second screw rod 50, the walking slide 45 is connected to the translation slide, a second motor is arranged at one end of the walking beam 41, and the output shaft of the second motor is connected to the second screw rod 50 by transmission, and the walking A lifting cylinder 51 is vertically installed on the slide 45, and the telescopic shaft of the lifting cylinder 51 is connected to the lifting seat 42. The rotating plate 43 is rotatably connected to the lifting seat 42 through the main shaft 52. A driving motor 53 is installed on the top of the lifting seat 42. The output shaft of the driving motor 53 is connected to the main shaft 52. The first motor 48 drives the first screw rod 47 to rotate, so that the walking beam 41 moves linearly along the axial direction of the first screw rod 47 to drive the negative pressure feeding tube 44 to move along the X direction. The second motor drives the second screw rod 50 to rotate, so that the translation slider drives the walking slide 45 to move linearly along the axial direction of the second screw rod 50 to drive the negative pressure feeding tube 44 to move along the Y direction. The lowering cylinder 51 drives the lifting seat 42 to move up and down, so that the negative pressure feeding tube 44 has the freedom to move along the Z direction, so that the negative pressure feeding tube 44 has the freedom to move in the three directions of X, Y, and Z in the spatial coordinate system, and can feed the circuit board on the horizontal positioning table 7 to the polishing station; according to the feedback signal of the distance sensor 39, the state of the circuit board is judged. When the state of the circuit board is inconsistent with the specified loading state, after the negative pressure feeding tube 44 adsorbs the circuit board, the driving motor 53 drives the rotating plate 43 to rotate 90° through the main shaft 52, thereby adjusting the state of the circuit board, making the polishing and feeding state of the circuit board consistent, which is convenient for the subsequent polishing operation.

[0023] Embodiment 4: Since the lifting box 2 has the freedom to move up and down, in order to avoid interference with the code material conveyor belt 3 and the positioning conveyor belt 10, the code material conveyor belt 3 and the positioning conveyor belt 10 cannot be extended into the rectangular window 5 for conveying, so that the circuit board cannot be completely conveyed into the rectangular window 5, and the circuit board cannot be sent out from the lifting box 2. Therefore, based on the third embodiment, as Figures 1 to 6As shown, a plurality of rectangular grooves 13 are provided at equal intervals on the top surface of the support partition 6 along the direction of the code material conveying of the circuit board, a rotating shaft 14 is rotatably provided in the rectangular groove 13, a supporting roller 15 is fixedly sleeved on the rotating shaft 14, the top surface height of the supporting roller 15 is higher than the top surface height of the support partition 6, one end of the rotating shaft 14 passes through the support partition 6 and is connected to a gear 16, an intermediate gear 17 is provided between two adjacent rotating shafts 14, the intermediate gear 17 is rotatably connected to the support partition 6 through an intermediate shaft 20, the intermediate gear 17 meshes with the gear 16, and a rack 18 is vertically fixed on one side of each lifting box 2, wherein one intermediate shaft 2 0 passes through the lifting box 2 and is connected to a driving gear 19, which meshes with the rack 18. During stacking, the top surface of the support roller 15 is flush with the conveying surface of the stacking conveyor belt 3, and one end of the circuit board is conveyed to the rectangular window 5 through the stacking conveyor belt 3 and supported by the support roller 15. When the stacking conveyor belt 3 can no longer convey the circuit board, the lifting box 2 moves upward so that the next supporting partition 6 corresponds to the stacking conveyor belt 3. During the upward movement of the lifting box 2, the driving gear 19 rolls on the rack 18, and the driving gear 19 drives the intermediate shaft 20 to rotate. The intermediate shaft 20 is connected to the intermediate gear 17 and the gear 16. The meshing drives the rotating shaft 14 to rotate, and the rotating shaft 14 drives the supporting roller 15 to rotate. Through the setting of the intermediate gear 17, the rotation directions of the multiple supporting rollers 15 are the same. During the upward movement of the lifting box 2, the rotation direction of the supporting roller 15 is the same as the conveying rotation direction of the code material conveyor belt 3, so that the circuit board is continuously conveyed by the supporting roller 15, so that the circuit board is completely conveyed into the lifting box 2, and the circuit board conveyed to the right position abuts against the inner wall of the lifting box 2, so that the supporting roller 15 produces idling on the circuit board, so that the supporting roller 15 can rotate normally, avoiding interference, thereby not utilizing the driving device The lifting box 2 is equipped with a device, and the circuit board is automatically and completely transported into the lifting box 2 during the upward movement of the lifting box 2. Similarly, when the lifting box 2 corresponds to the loading platform 4 for grinding and loading, the lifting box 2 will move downward. During the downward movement of the lifting box 2, the intermediate shaft 20 is rotated in the opposite direction through the cooperation of the driving gear 19 and the rack 18, so that the supporting roller 15 is rotated in the opposite direction, and then the circuit board is sent out of the lifting box 2 through the rotation of the supporting roller 15, so that one end of the circuit board is located on the positioning conveyor belt 10, and then the circuit board is continued to be transported forward by the positioning conveyor belt 10, so that the circuit board is sent out of the lifting box 2. During specific implementation, in order to prevent the position of the circuit board in the non-loading state from remaining unchanged during grinding and loading, a baffle 56 is arranged between the loading platform 4 and the lifting box 2. A horizontal cylinder 57 is connected to one side of the baffle 56. The horizontal cylinder 57 drives the baffle 56 to move close to the lifting box 2. The baffle 56 blocks the rectangular window 5 area above the horizontal positioning platform 7, so that the circuit board that is not in the loading state is against the baffle 56, preventing the non-loaded circuit board from moving out of the lifting box 2, and then the circuit boards in the lifting box 2 can be transported to the loading platform 4 in sequence.

[0024] Embodiment 5: Based on Embodiment 4, Figures 1 to 4 As shown, a lifting mechanism is provided on the side of the lifting box 2 away from the rectangular window 5, and the lifting mechanism includes a lifting pillar 21 and a lifting plate 22. A screw groove 23 is provided on the side of the lifting pillar 21 close to the lifting box 2, and a screw 24 is rotatably provided in the screw groove 23. A screw slider 25 is threadedly sleeved on the screw 24, and the screw slider 25 is slidably adapted to the screw groove 23. The two ends of the lifting plate 22 are respectively connected to the screw slider 25 and the lifting box 2. A screw motor 26 is installed on the top of the lifting pillar 21. The output shaft of the screw motor 26 is connected to the screw 24. The screw motor 26 drives the screw 24 to rotate, so that the screw slider 25 moves linearly along the axial direction of the screw 24, and the screw slider 25 drives the lifting box 2 to move up and down through the lifting plate 22 to change the stacking and loading positions.

[0025] Furthermore, if Figures 1 to 6As shown, a lifting control mechanism is provided on one side of the lifting box 2, and the lifting control mechanism includes a control base 27, a slider 28, an insert 29 and a pressure sensor 30. A control groove 31 is provided on the side of the control base 27 close to the lifting box 2, and the pressure sensor 30 is installed in the control groove 31. The slider 28 is slidably arranged in the control groove 31. The end of the slider 28 close to the pressure sensor 30 is connected to a spring 32, and the end of the spring 32 away from the slider 28 is connected to a pressure plate 33, and the pressure plate 33 contacts the pressure test shaft of the pressure sensor 30. The end of the slider 28 away from the spring 32 is connected to an insert 29. A control socket 34 is provided on the side of the lifting box 2 close to the control base 27 corresponding to each supporting partition 6. When the insert 29 is inserted into one of the control sockets 34, the corresponding supporting partition 6 is facing the material conveyor belt 3 for material stacking or facing the loading platform 4 for material loading. The top and bottom surfaces of the insert 29 are provided with a wedge surface 35. When the lifting box 2 is in the lowest position, the insert 29 is inserted into the control socket 34 at the highest position. According to the pressure signal transmitted by the pressure sensor 30, The number is used to judge the stacking and loading position of the lifting box 2. When the plug 29 is inserted into the control socket 34, the pressure value of the pressure sensor 30 is the minimum. At this time, the lifting box 2 stops moving to perform the stacking or loading operation. When a stacking or loading operation is completed, the lifting box 2 continues to move. The lifting box 2 will squeeze the wedge surface 35 of the plug 29. Under the guidance of the wedge surface 35, the plug 29 squeezes the spring 32 away from the lifting box 2, so that the plug 29 is separated from the control socket 34. At this time, the spring 32 is compressed to generate a strong reaction force This force acts on the pressure sensor 30 through the pressure plate 33. At this time, the pressure value fed back by the pressure sensor 30 is the largest. When the downward control socket 34 of the lifting box 2 corresponds to the plug 29, the plug 29 is inserted into the control socket 34 under the reaction force of the spring 32, so that the spring 32 is reset and the pressure value of the pressure sensor 30 is the smallest. At this time, the control screw motor 26 is stopped, so that the movement of the lifting box 2 can be accurately controlled, so that the circuit board can be smoothly transported into the lifting box 2, or the circuit board can be smoothly sent out from the lifting box 2.

[0026] Embodiment 6: Based on Embodiment 5, Figure 1 and Figure 2As shown, the conveying frames of the two positioning conveyor belts 10 are connected together by a connecting plate 36, and a height adjustment cylinder 37 is vertically arranged below the connecting plate 36. The telescopic shaft of the height adjustment cylinder 37 is connected to the connecting plate 36, and the end of the push plate 11 away from the longitudinal positioning plate 12 is connected to the telescopic shaft of the pushing cylinder 38. The cylinder body of the pushing cylinder 38 is installed on the horizontal positioning platform 7. The upper surface of the horizontal positioning platform 7 is smoothed to reduce the friction force of the circuit board sliding on the horizontal positioning platform 7 and will not wear the circuit board. First, the circuit board is aligned with the horizontal positioning plate 8 through the positioning conveyor belt 10, and then the height adjustment cylinder 37 drives the two positioning conveyor belts 10 to move downward, so that the conveying surface of the positioning conveyor belts 10 is located below the top surface of the horizontal positioning platform 7, thereby greatly reducing the friction force of the circuit board during longitudinal movement, so that when the pushing cylinder 38 drives the push plate 11 to push the circuit board, the friction force of the circuit board sliding on the horizontal positioning platform 7 is small, thereby avoiding the wear of the circuit board.

Claims

1. A feeding and conveying device for grinding the side of a circuit board, characterized in that: The invention comprises a rotating worktable (1), wherein a material-encoding conveyor belt (3) and a loading platform (4) are sequentially arranged on the outer side of the rotating worktable (1) along its circumferential direction, and a plurality of loading conveyor mechanisms are evenly distributed on the rotating worktable (1) in a circumferential manner, wherein the loading conveyor mechanisms comprise a lifting box (2), wherein the lifting box (2) has the freedom to move along the axial direction of the rotating worktable (1), and a rectangular window (5) is provided on a side of the lifting box (2) close to the loading platform (4), and a plurality of supporting partitions (6) are fixed in the rectangular window (5) at equal intervals along the axial direction of the rotating worktable (1); The loading platform (4) comprises a horizontal positioning platform (7), a transverse positioning plate (8) and a longitudinal positioning plate (12); the transverse positioning plate (8) is fixed to the top of the horizontal positioning platform (7) at one end away from the lifting box (2); the longitudinal positioning plate (12) is fixed to one side of the horizontal positioning platform (7); two conveying grooves (9) are opened through the horizontal positioning platform (7); a positioning conveyor belt (10) is arranged in the conveying groove (9); the positioning conveyor belt (10) is used to convey the circuit board in the lifting box (2) to the transverse positioning plate (8); a push plate (11) is arranged on the top surface of the horizontal positioning platform (7); the moving direction of the push plate (11) is perpendicular to the moving direction of the positioning conveyor belt (10); the push plate (11) is used to convey the circuit board to the longitudinal positioning plate (12); It also comprises a gantry conveying mechanism, which is used to load the circuit board on the loading platform (4) to the polishing station, and the lifting box (2) stacks the materials from top to bottom and loads the materials from bottom to top.

2. A feeding and conveying device for grinding the side of a circuit board according to claim 1, characterized in that: The top surface of the support partition (6) is provided with a plurality of rectangular grooves (13) at equal intervals along the direction of conveying the circuit board material, a rotating shaft (14) is rotatably arranged in the rectangular groove (13), a support roller (15) is fixedly sleeved on the rotating shaft (14), and the top surface height of the support roller (15) is higher than the top surface height of the support partition (6).

3. A feeding and conveying device for grinding the side of a circuit board according to claim 2, characterized in that: One end of the rotating shaft (14) passes through the supporting baffle (6) and is connected to a gear (16); an intermediate gear (17) is provided between two adjacent rotating shafts (14); the intermediate gear (17) is rotatably connected to the supporting baffle (6) via an intermediate shaft (20); the intermediate gear (17) meshes with the gear (16); a rack (18) is vertically fixed to one side of each lifting box (2); one of the intermediate shafts (20) passes through the lifting box (2) and is connected to a driving gear (19); the driving gear (19) meshes with the rack (18).

4. A feeding and conveying device for grinding the side of a circuit board according to claim 1, characterized in that: A lifting mechanism is provided on a side of the lifting box (2) away from the rectangular window (5), and the lifting mechanism comprises a lifting pillar (21) and a lifting plate (22). A screw groove (23) is provided on a side of the lifting pillar (21) close to the lifting box (2), a screw (24) is rotatably provided in the screw groove (23), a screw slider (25) is threadedly sleeved on the screw (24), and the screw slider (25) is slidably adapted to the screw groove (23), the two ends of the lifting plate (22) are respectively connected to the screw slider (25) and the lifting box (2), and a screw motor (26) is installed on the top of the lifting pillar (21), and the output shaft of the screw motor (26) is drivingly connected to the screw (24).

5. A feeding and conveying device for grinding the side of a circuit board according to claim 4, characterized in that: A lifting control mechanism is provided on one side of the lifting box (2), and the lifting control mechanism comprises a control base (27), a slider (28), an insert (29) and a pressure sensor (30). A control groove (31) is provided on a side of the control base (27) close to the lifting box (2), and the pressure sensor (30) is installed in the control groove (31). The slider (28) is slidably arranged in the control groove (31). An end of the slider (28) close to the pressure sensor (30) is connected to a spring (32), and an end of the spring (32) away from the slider (28) is connected to a pressure plate (33), and the pressure plate (33) contacts the pressure sensor. The slider (28) is connected to the insert (29) at one end away from the spring (32); a control socket (34) is provided on a side of the lifting box (2) close to the control base (27) corresponding to each supporting partition (6); when the insert (29) is inserted into one of the control sockets (34), the corresponding supporting partition (6) faces the stacking conveyor belt (3) for stacking or faces the loading platform (4) for loading; the top and bottom surfaces of the insert (29) are provided with wedge-shaped surfaces (35); when the lifting box (2) is in the lowest position, the insert (29) is inserted into the control socket (34) in the highest position.

6. A feeding and conveying device for grinding the side of a circuit board according to claim 1, characterized in that: The conveying frames of the two positioning conveyor belts (10) are connected together by a connecting plate (36), and a height adjustment cylinder (37) is vertically arranged below the connecting plate (36). The telescopic shaft of the height adjustment cylinder (37) is connected to the connecting plate (36), and the end of the push plate (11) away from the longitudinal positioning plate (12) is connected to the telescopic shaft of the pushing cylinder (38), and the cylinder body of the pushing cylinder (38) is installed on the horizontal positioning platform (7).

7. A feeding and conveying device for grinding the side of a circuit board according to claim 6, characterized in that: A distance sensor (39) is embedded in the end surface of the push plate (11) close to the longitudinal positioning plate (12).

8. The feeding and conveying device for grinding the side of a circuit board according to claim 1, characterized in that: The gantry conveying mechanism comprises a gantry (40), a walking beam (41), a walking slide (45), a lifting seat (42), a rotating plate (43) and a negative pressure feeding pipe (44); one end of the walking beam (41) is slidably arranged on the gantry (40); the walking slide (45) is slidably arranged on the walking beam (41); the moving direction of the walking beam (41) is perpendicular to the moving direction of the walking slide (45) on a horizontal plane; the lifting seat (42) is arranged below the walking slide (45); the lifting seat (42) has the freedom to move along the height direction of the gantry (40); the rotating plate (43) is rotatably arranged at the bottom of the lifting seat (42); and the negative pressure feeding pipe (44) is installed at the bottom of the rotating plate (43).

9. A feeding and conveying device for grinding the side of a circuit board according to claim 8, characterized in that: The gantry (40) is provided with a first screw rod groove (46) in the horizontal direction, a first screw rod (47) is rotatably arranged in the first screw rod groove (46), the walking crossbeam (41) is threadedly sleeved on the first screw rod (47), the walking crossbeam (41) is slidably adapted to the first screw rod groove (46), a first motor (48) is installed on the gantry (40), an output shaft of the first motor (48) is drivingly connected to the first screw rod (47), a second screw rod groove (49) is provided at the bottom of the walking crossbeam (41), and the second screw rod groove ( A second screw rod (50) is rotatably arranged inside the lifting seat (49), a translation slider is threadedly sleeved on the second screw rod (50), the travel slide (45) is connected to the translation slide, a lifting cylinder (51) is vertically installed on the travel slide (45), the telescopic shaft of the lifting cylinder (51) is connected to the lifting seat (42), the rotating plate (43) is rotatably connected to the lifting seat (42) through the main shaft (52), a driving motor (53) is installed on the top of the lifting seat (42), and the output shaft of the driving motor (53) is transmission-connected to the main shaft (52).

10. A feeding and conveying device for grinding the side of a circuit board according to claim 1, characterized in that: A switching spindle (54) is coaxially fixed to the bottom of the rotating worktable (1); one end of the switching spindle (54) away from the rotating worktable (1) is rotatably mounted on a conveying base (55); a switching motor is disposed in the conveying base (55); an output shaft of the switching motor is drivingly connected to the switching spindle (54).

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