A conveying device for defoaming PCB board

Abstract

The invention relates to the technical field of PCB conveying equipment, and specifically discloses a conveying equipment for defoaming PCB boards, comprising a conveying frame and an adsorbent, wherein the adsorbent comprises a suction cup and a receiving plate, wherein the suction cup is used for adsorbing PCB boards, wherein a mounting sleeve is arranged on the receiving plate, wherein a slider is rotatably arranged inside the mounting sleeve, wherein the slider and the mounting sleeve are combined to form an intermediate cavity, wherein a suction pipe 1 connected to the intermediate cavity is arranged on the mounting sleeve, wherein the suction cup is arranged on a side of the slider away from the receiving plate, wherein the rotation axes of the suction cup and the slider are arranged at intervals, wherein a through hole for connecting the suction cup and the intermediate cavity is penetrated and opened on the slider, wherein an impeller is rotatably arranged on a side of the slider close to the intermediate cavity, wherein the impeller is arranged close to the through hole, wherein a gear ring is coaxially arranged on the inner wall of the mounting sleeve with the slider, wherein a gear 2 meshing with the gear ring is arranged on the rotating shaft of the impeller; the conveying equipment for defoaming PCB boards of the invention has the effect of facilitating the suction cup to adsorb PCB boards.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board conveying equipment, and in particular to a conveying equipment for defoaming PCB boards. Background Art

[0002] PCB boards play multiple roles in electronic equipment, such as supporting, connecting, protecting and improving production efficiency. They are an indispensable and important part of the modern electronic industry. Due to the poor heat resistance and moisture resistance of PCB boards and the presence of impurities in the materials, blistering will occur during production. The blistering PCB boards need to be processed in time, otherwise it will have an adverse effect on subsequent production and processing, quality inspection and product performance. For the blistering PCB boards, it is necessary to use conveying equipment to transport the PCB boards to the defoaming equipment for defoaming treatment.

[0003] The patent application document with publication number CN111153211A discloses a transport device that can prevent the adsorption of multiple sheets, including a transport mounting seat, a transport mechanism arranged on the transport mounting seat, and a vertical drive mechanism for driving the transport mechanism to move vertically, wherein the transport mechanism includes a support, a plurality of first suction cups and a second suction cup arranged on the support, wherein the first suction cup is multiple, the second suction cup is arranged on the side of the support and located in the middle of the first suction cup, and the second suction cup includes a suction nozzle and a drive member for driving the suction nozzle to move vertically. During transportation, the sheet material is adsorbed by the first suction cup and the second suction cup to be transported and transferred.

[0004] However, this solution still has the following problems: the conveying equipment uses suction cups to absorb the sheet material to convey the sheet material, but when bubbles appear on the absorbed part of the sheet material, the surface of the sheet material will become uneven, affecting the absorption of the suction cup to that part, or even causing the absorption to fail. And if too many suction cups fail to absorb, the sheet material is prone to bending and deformation when the conveying equipment is conveying the sheet material, and in severe cases, the sheet material may even be damaged. Summary of the invention

[0005] The invention provides a conveying device for defoaming a PCB board, aiming to solve the problem in the related art that a suction cup cannot adsorb the PCB board due to bubbles on the PCB board.

[0006] The conveying device for defoaming a PCB board of the present invention comprises a conveying frame slidably arranged on the defoaming device, and also comprises an adsorbing member, the adsorbing member comprises a suction cup and a receiving plate connected to the conveying frame, the suction cup is arranged on the side of the receiving plate for adsorbing the PCB board, a mounting sleeve is arranged on the receiving plate, a sliding block is rotatably arranged in the mounting sleeve, a side of the sliding block close to the receiving plate and the mounting sleeve are surrounded to form an intermediate cavity, a suction pipe 1 is arranged on the mounting sleeve, the suction pipe 1 is connected with the intermediate cavity for exhausting air to form a negative pressure in the intermediate cavity, the suction cup is arranged on the side of the sliding block away from the receiving plate, the rotation axes of the suction cup and the sliding block are arranged at intervals, a through hole for connecting the suction cup and the intermediate cavity is opened on the sliding block, an impeller is rotatably arranged on the side of the sliding block close to the intermediate cavity, the impeller is arranged close to the through hole so that the airflow in the through hole drives the impeller to rotate when passing through the impeller, a gear ring is coaxially arranged on the inner wall of the mounting sleeve with the sliding block, and a gear 2 meshing with the gear ring is arranged on the rotating shaft of the impeller.

[0007] The effect is that when the suction cup fails to adsorb the PCB board due to bubbling of the PCB board, an airflow will be formed in the through hole and enter the middle cavity while the middle cavity maintains a negative pressure. When the airflow passes through the impeller, the impeller drives the second gear to rotate. Under the action of the second gear and the gear ring, the slider rotates, driving the eccentrically arranged suction cup on the slider to rotate accordingly, so that the position of the suction cup relative to the PCB board is adjusted, until the suction cup moves to a place where there is no bubbling on the PCB board to adsorb the PCB board. By automatically adjusting the position of the suction cup, the adsorption effect on the PCB board is guaranteed, which is convenient for subsequent transportation.

[0008] Preferably, the slider is slidably arranged in the installation sleeve toward the receiving plate, and guide groove 1 and guide groove 2 are opened on the side of the slider, guide groove 1 is arranged around the slider, guide groove 2 is arranged at the end of guide groove 1 away from the receiving plate, guide groove 2 is arranged along the sliding direction of the slider, and guide groove 2 is arranged along the sliding direction of the receiving plate. A guide block is arranged on the inner wall of the gear ring, and the guide block is slidably arranged in guide groove 1 and guide groove 2. The center of straw 1 is spaced apart from the rotation axis of the slider, and when the slider moves to abut against straw 1, the side of the slider blocks straw 1.

[0009] The effect is that when the slider rotates, the guide block slides in the guide groove 1. Because the middle cavity is in a negative pressure state, the slider tends to move toward the receiving plate. When the guide block moves to the guide groove 2 and the suction cup still does not adsorb the PCB board, the slider moves toward the receiving plate, and the guide block slides in the guide groove 2 until the slider abuts against the end of the suction pipe 1 to seal it, stop the suction cup from adsorbing the PCB board, and reduce the phenomenon that the suction pipe 1 continues to pump air when the suction cup cannot adsorb.

[0010] Preferably, a sealing ring is coaxially arranged on the outside of the sliding block, and the sealing ring is in sliding contact with the inner wall of the mounting sleeve.

[0011] The effect is to improve the sealing between the slider and the mounting sleeve, reduce the air leakage in the gap between the slider and the mounting sleeve, so as to ensure the negative pressure value in the middle cavity during air extraction, thereby improving the adsorption stability between the suction cup and the PCB board.

[0012] Preferably, an elastic member 1 is provided between the sealing ring and the gear ring, the elastic member 1 is connected to the sealing ring and the gear ring respectively, and the elastic member 1 is used to drive the guide block to slide in the guide groove 1 along an end away from the guide groove 2.

[0013] The effect is that when the slider moves toward the receiving plate, the elastic member 1 is compressed, that is, when the slider abuts against the straw 1 to seal it, the elastic member 1 is in a compressed state, so that after the air extraction stops, the slider moves to the initial position.

[0014] Preferably, a second elastic member is provided on the side of the sealing ring facing away from the receiving plate, and both ends of the second elastic member are respectively connected to the sealing ring and the inner wall of the mounting sleeve, and the second elastic member is used to drive the slider to slide in a direction away from the receiving plate.

[0015] The effect is that when the slider rotates, the elastic member 2 twists accordingly, so that after the slider moves to the initial position under the action of the elastic member 1, the elastic member 2 drives the suction cup to rotate to the initial position to prepare for the next conveying.

[0016] Preferably, at least two groups of adsorption members are provided, and the receiving plates in the multiple adsorption members are arranged in parallel and spaced apart, each group of adsorption members includes multiple suction cups, and the multiple suction cups in each group of adsorption members are arranged along the length direction of the receiving plates.

[0017] The effect is that multiple suction cups are set to adsorb multiple places on the PCB board when the PCB board is transported, thereby increasing the force-bearing area of ​​the PCB board, reducing the phenomenon of the PCB board falling during transportation, and thus improving the stability of the PCB board during transportation.

[0018] Preferably, a controller is provided on the conveying rack, and a sensor is provided at one end of the suction tube close to the slider. The signal output end of the sensor is electrically connected to the signal receiving end of the controller. The sensor is used to detect whether the slider is abutting against the suction tube. The control end of the controller is connected to a negative pressure pump that provides negative pressure to the middle cavity, and is used to control the switch of the negative pressure pump. After the sensor detects that the number of times the suction cup has not been adsorbed on the PCB board reaches a threshold, the controller controls the negative pressure pump to shut down and stop conveying the PCB board.

[0019] The effect is that a threshold is set, and when the PCB board is transported, the adsorption status of multiple suction cups is detected by the sensing component. After the slider moves to abut against the suction tube, the sensing component detects a signal, and the suction cup is not adsorbed on the PCB board. The signal is then transmitted to the controller, and the controller judges the received signal. If the number of non-adsorption reaches the threshold, the controller controls the negative pressure pump to stop working, that is, stops transporting the PCB board, thereby reducing the phenomenon of the PCB board falling off or being damaged during transportation due to too many suction cups not being adsorbed on the PCB board.

[0020] Preferably, a rubber layer is provided on a side of the slider close to the first straw, and the slider abuts against the first straw through the rubber layer.

[0021] The effect is that the slider abuts against the end of straw one through the rubber layer. After the end of straw one abuts against the rubber layer, the corresponding parts of the rubber layer and straw one are deformed, thereby increasing the contact area between the rubber layer and straw one, thereby achieving the effect of improving the sealing performance of the slider and straw one through the rubber layer, thereby improving the sealing effect on straw one.

[0022] Preferably, the end of the suction tube 1 extends into the middle cavity, and the length of the suction tube 1 in the middle cavity is greater than the height of the impeller above the side of the slider.

[0023] The effect is that the length of the straw 1 extending into the middle cavity is set to be greater than the height of the impeller above the slider, so that when the slider abuts against the straw 1, there is still space in the middle cavity sufficient to place the impeller, thereby reducing the collision between the impeller and the inner wall of the middle cavity, protecting the impeller, and reducing the phenomenon of the impeller interfering with the abutment of the slider and the straw 1, so that the slider 1 can block the straw 1.

[0024] Preferably, the suction cup includes a second suction tube and a suction head, the second suction tube is connected to the slider and communicated with the through hole, the suction head is arranged on the side of the second suction tube away from the slider, and the side of the second suction tube close to the suction head extends to the outside of the mounting sleeve.

[0025] The effect is that the suction head is connected to the through hole through the second suction tube, and the suction head extends to the outside of the mounting sleeve through the second suction tube, so that when the slider rotates or slides in the mounting sleeve, the second suction head is located outside the mounting sleeve, thereby reducing the phenomenon that the suction head interferes with the movement of the slider. At the same time, the suction head is arranged outside the mounting sleeve so that the suction head can be completely adsorbed on the PCB board, thereby improving the stability of the suction head when adsorbing the PCB board.

[0026] Beneficial effects:

[0027] The present invention arranges a slider in the installation sleeve, and when bubbling occurs at a position on the PCB board corresponding to the suction cup, the airflow passing through the through hole drives the impeller to rotate, and the rotation of the impeller drives the slider to rotate, and the suction cup and the slider are eccentrically arranged, and the rotation of the slider can adjust the position of the suction cup relative to the PCB board, so that the suction cup moves to a non-bubbled position on the PCB board so as to be adsorbed on the PCB board and transport the PCB board. At the same time, arranging a plurality of suction cups can ensure the force-bearing area of ​​the PCB board, improve the stability of the PCB board during transportation, reduce the damage or falling of the PCB board, and improve the transportation quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a structural schematic diagram of the conveying frame in the present invention.

[0030] Figure 3 It is a structural schematic diagram of the adsorption component in the present invention.

[0031] Figure 4 It is a structural schematic diagram of the installation sleeve in the present invention.

[0032] Figure 5 It is a partial exploded schematic diagram of the slider and the straw in the present invention.

[0033] Figure 6 It is a structural schematic diagram of the impeller in the present invention.

[0034] Figure 7 It is a partial exploded schematic diagram of the slider and the guide block in the present invention.

[0035] Reference numerals:

[0036] 01. Defoaming equipment; 02. Mounting plate; 1. Conveying rack; 11. Screw; 12. Adjusting part; 2. Adsorption part; 3. Pushing part; 4. Receiving plate; 5. Suction cup; 51. Suction tube 2; 52. Suction head; 6. Mounting sleeve; 61. Gear ring; 611. Guide block; 62. Suction tube 1; 7. Sliding block; 71. Guide groove 1; 72. Guide groove 2; 73. Sealing ring; 74. Elastic part 1; 75. Elastic part 2; 76. Through hole; 77. Intermediate cavity; 8. Impeller; 81. Gear 2; 9. Control part; 91. Controller; 92. Induction part. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0038] like Figures 1 to 7As shown, the conveying equipment for defoaming of PCB boards of the present invention comprises a conveying frame 1, an adsorption member 2 and a pushing member 3. A mounting plate 02 is arranged on the defoaming equipment 01. The conveying frame 1 is slidably arranged on the mounting plate 02 toward the direction of the defoaming equipment 01. The pushing member 3 is arranged on the conveying frame 1. The pushing member 3 can be arranged as a cylinder. The output end of the pushing member 3 is connected to the adsorption member 2 to drive the adsorption member 2 to move to the PCB board, and the PCB board is adsorbed by the adsorption member 2. Then, the conveying frame 1 is moved to the defoaming equipment 01 to convey the PCB board.

[0039] In this embodiment, the conveyor frame 1 slides on the mounting plate 02 and is driven by a motor. Specifically, the motor is arranged on the conveyor frame 1, and a gear 1 is arranged at the output end of the motor. A rack is arranged on the mounting plate 02 along the sliding direction of the conveyor frame 1. The gear 1 is meshed with the rack. When the motor drives the gear 1 to rotate, the conveyor frame 1 is driven to move through the rack, thereby adjusting the position of the conveyor frame 1. In other embodiments, a cylinder may be arranged between the conveyor frame 1 and the mounting plate 02, and the conveyor frame 1 is driven by connecting the output end of the cylinder with the conveyor frame 1, thereby achieving the effect of conveying the PCB board.

[0040] Reference Figures 2 to 4 , the adsorbent 2 includes a receiving plate 4 and a suction cup 5, the suction cup 5 is arranged on the side of the receiving plate 4 away from the pushing member 3, and the suction cup 5 is used to adsorb the PCB board so that the PCB board can be moved with the conveying frame 1 later. The adsorbent 2 is provided with at least two groups, and in this embodiment, it is set as two groups. The two groups of adsorbents 2 are arranged at intervals. A lead screw 11 is arranged on the conveying frame 1 along the spacing direction of the two groups of adsorbents 2. There are two lead screws 11 and two groups of adsorbents 2 corresponding to each other. The lead screw 11 passes through the receiving plate 4 and is threaded with the receiving plate 4. The lead screw 11 is rotatably arranged on the conveying frame 1. An adjusting member 12 is arranged on the conveying frame 1. The adjusting member 12 can be set as a motor. The output end of the control member 9 is connected to the lead screw 11 to drive the lead screw 11 to rotate. The control member 9 adjusts the position of the receiving plate 4 by driving the lead screw 11 to rotate, and then adjusts the distance between the two groups of adsorbents 2 to adapt to PCBs of different sizes, so as to facilitate the subsequent transportation of the PCB boards.

[0041] Reference Figure 4 and Figure 5, a mounting sleeve 6 is arranged on the receiving plate 4, a slider 7 is arranged inside the mounting sleeve 6, the side of the slider 7 close to the receiving plate 4 and the mounting sleeve 6 are surrounded to form an intermediate cavity 77, and a suction pipe 1 62 is arranged on the mounting sleeve 6. The suction cup 5 includes a suction pipe 2 51 and a suction head 52, the suction pipe 2 51 is connected to the side of the slider 7 away from the intermediate cavity 77, the suction head 52 is arranged on the side of the suction pipe 2 51 away from the slider 7, a through hole 76 is opened through the slider 7, the suction pipe 2 51 and the through hole 76 are coaxially arranged, and the suction pipe 2 51 is connected to the through hole 76, that is, the suction pipe 2 51 is connected to the intermediate cavity 77 through the through hole 76. After the suction cup 5 approaches the PCB board, air is sucked toward the outside of the intermediate cavity 77 through the suction pipe 1 62, so that a negative pressure is formed in the intermediate cavity 77, and then the suction head 52 is adsorbed on the PCB board through the through hole 76 and the suction pipe 2 51, so that the subsequent PCB board can move with the conveying rack 1 to perform a conveying operation on the PCB board.

[0042] Reference Figure 5 and Figure 6 The slider 7 and the mounting sleeve 6 are coaxially arranged, and the slider 7 is rotatably arranged in the mounting sleeve 6 around its center line. A gear ring 61 is arranged on the inner wall of the mounting sleeve 6, and the gear ring 61 is sleeved on the outside of the slider 7. An impeller 8 is rotatably arranged at one end of the slider 7 close to the receiving plate 4, and the rotation axis of the impeller 8 is arranged close to the edge of the through hole 76, that is, when the external air enters the middle cavity 77 through the suction cup 5 and the through hole 76, the airflow formed in the through hole 76 drives the impeller 8 to rotate when passing through the impeller 8. A gear 2 81 is coaxially arranged on the rotation axis of the impeller 8, and the gear 2 81 is meshed with the gear ring 61. The suction pipe 2 51 and the axis of the slider 7 are arranged at intervals, that is, the suction cup 5 is eccentrically arranged on the slider 7.

[0043] After the suction tube 62 is evacuated to form a negative pressure in the middle cavity 77, the suction cup 5 applies suction to the PCB board. When there is a bubble at the adsorption point corresponding to the suction cup 5, the suction cup 5 cannot be adsorbed on the PCB board, and the outside air will enter the middle cavity 77 through the suction cup 5, the suction tube 2 51 and the through hole 76. At this time, the suction tube 1 62 continues to pump air. When the air flow passes through the impeller 8, it drives the impeller 8 to rotate. The rotation of the impeller 8 drives the gear 2 81 to rotate. The gear 2 81 rotates and meshes with the gear ring 61, and at the same time drives the slider 7 to rotate. The rotation of the slider 7 drives the suction cup 5 to rotate. When the suction cup 5 rotates, its position moves relative to the PCB board until the suction cup 5 bypasses the bubble and is finally adsorbed on the PCB board, thereby ensuring the adsorption effect of the suction cup 5 on the PCB board, so as to facilitate the subsequent transportation of the PCB board.

[0044] Reference Figure 7The slider 7 is slidably arranged in the installation sleeve 6 in the direction toward the receiving plate 4. A guide groove 1 71 is provided on the side of the slider 7 around the rotation axis of the slider 7. The two ends of the guide groove 1 71 are arranged at intervals. A guide groove 2 72 is provided on the side of the slider 7 along the sliding direction thereof. The guide groove 2 72 is connected to one end of the guide groove 1 71. The guide groove 2 72 is arranged on the side of the guide groove 1 71 away from the receiving plate 4. A guide block 611 is provided on the inner wall of the gear ring 61. The guide block 611 is slidably arranged in the guide groove 1 71 and the guide groove 2 72. The center of the suction tube 1 62 is arranged at intervals from the rotation axis of the slider 7. When the slider 7 moves to abut against the end of the suction tube 1 62, the side of the slider 7 abuts against the end of the suction tube 1 62 and blocks the suction tube 1 62.

[0045] In the initial state, the guide block 611 is in the guide groove 1 71. When the impeller 8 drives the slider 7 to rotate, the guide block 611 moves in the guide groove 1 71. After the slider 7 drives the suction cup 5 to rotate for nearly one circle, the guide block 611 moves to the guide groove 2 72. If the suction cup 5 is still not adsorbed on the PCB board at this time, under the action of the negative pressure of the middle cavity 77, the slider 7 is driven to move toward the receiving plate 4. At the same time, the guide block 611 slides in the guide groove 2 72 until the slider 7 moves to abut against the suction pipe 1 62, thereby blocking the suction pipe 1 62 and stopping the air extraction operation of the suction pipe 1 62, thereby reducing the phenomenon that the suction cup 5 is unable to adsorb due to excessive bubbles on the PCB board and the suction pipe 5 is still being exhausted. In addition, in other embodiments, in order to improve the sealing effect of the slider 7 on the straw 62 when the slider 7 abuts against the straw 62, a rubber layer is provided on the side of the slider 7 close to the straw 62, and the slider 7 abuts against the straw 62 through the rubber layer, thereby improving the sealing effect after the slider 7 and the straw 62 abut against each other.

[0046] In order to enable the impeller 8 to rotate under the action of the airflow, the impeller 8 is provided with a center rod and blades. A plurality of blades are arranged around the center rod, and the angle between every two adjacent blades is the same. The center rod is arranged near the edge of the through hole 76. When the blade rotates to a horizontal state, it faces the through hole 76, that is, the blade in the horizontal state is perpendicular to the center line of the through hole 76, so as to ensure that the blade can contact the airflow with the maximum surface when rotating, drive the blade to rotate, and then adjust the position of the suction cup 5.

[0047] In other embodiments, in order to ensure that the slide block 7 blocks the straw 1 62 after sliding to abutting the straw 1 62, the guide block 611 is set to move to the guide groove 2 72 or slide in the guide groove 2 72, at which time the through hole 76 and the straw 1 62 are arranged horizontally at intervals, that is, after the slide block 7 and the end of the straw 1 62 abut, the through hole 76 is prevented from overlapping with the straw 1 62 at the end, thereby reducing the leakage when the straw 1 62 is blocked. In addition, it can be set that when the guide block 611 slides in the guide groove 2 72, the straw 1 62 and the through hole 76 are arranged symmetrically around the center line of the slide block 7, and the through hole 76 and the center of the slide block 7 are arranged at intervals, and when the slide block 7 and the straw 1 62 abut, the centers of the straw 1 62 and the slide block 7 are also arranged at intervals, so that when the straw 1 62 is blocked, the phenomenon of connection between the straw 1 62 and the through hole 76 is reduced.

[0048] Reference Figure 4 The end of the suction pipe 1 62 extends into the middle cavity 77, and the length of the suction pipe 1 62 in the middle cavity 77 is greater than the height of the impeller 8 above the side of the slider 7, so that after the slider 7 moves to abut the end of the suction pipe 1 62, there is a part of the space for placing the impeller 8 in the middle cavity 77, which reduces the phenomenon that the impeller 8 interferes with the cooperation between the slider 7 and the suction pipe 1 62. The end of the suction pipe 2 51 close to the suction head 52 extends to the outside of the installation sleeve 6, which reduces the phenomenon that the suction head 52 enters the installation sleeve 6 during plugging, thereby reducing the phenomenon that the suction head 52 interferes with the movement of the slider 7.

[0049] Reference Figure 4 and Figure 5 A sealing ring 73 is coaxially arranged on the outside of the slider 7. The sealing ring 73 slides and abuts against the inside of the mounting sleeve 6. The sealing ring 73 is arranged on the side of the gear ring 61 away from the receiving plate 4. When the slider 7 slides or rotates, the sealing between the side of the slider 7 and the mounting sleeve 6 is ensured.

[0050] Reference Figure 4 and Figure 5 , an elastic member 74 is provided between the sealing ring 73 and the gear ring 61. The elastic member 74 can be set as a torsion spring, which is sleeved on the outside of the slider 7. One end of the torsion spring is connected to the sealing ring 73, and the other end is connected to the gear ring 61. When the guide block 611 slides in the guide groove 1 71, the torsion spring is subjected to torsion force, that is, when the guide block 611 enters the guide groove 2 72, the torsion spring is in a twisted state, so that after the guide block 611 moves into the guide groove 1 71, the elastic member 74 is used to drive the guide block 611 to slide in the guide groove 1 71 along the end away from the guide groove 2 72, that is, the slider 7 rotates to the initial position under the action of the elastic member 74.

[0051] Reference Figure 4 and Figure 5In addition, an elastic member 75 is provided on the side of the sealing ring 73 away from the receiving plate 4. The elastic member 75 can be set as a spring. One end of the spring is connected to the sealing ring 73, and the other end is connected to the inner wall of the mounting sleeve 6. The spring sleeve is arranged on the outside of the slider 7. When the slider 7 slides toward the receiving plate 4, the spring 75 gradually applies a force to the slider 7 to make it move away from the receiving plate 4, that is, when the guide block 611 slides in the guide groove 72, the spring 75 gradually applies a force to the slider 7 to make it move away from the receiving plate 4, so that when the suction pipe 62 stops pumping, as the negative pressure in the middle cavity 77 gradually decreases, the slider 7 moves to the initial position under the action of the elastic member 75, so as to adsorb the PCB board again for transportation.

[0052] Reference Figure 2 and Figure 3 Each group of adsorption parts 2 includes multiple suction cups 5, and multiple mounting sleeves 6 and multiple suction cups 5 are arranged one by one. The multiple receiving plates 4 in the multiple groups are arranged in parallel, and the multiple suction cups 5 in each group are arranged along the length direction of the receiving plate 4. By arranging multiple suction cups 5 to adsorb the PCB board at the same time, the area covered by the adsorption point when the PCB board is transported is increased, and the stability when the PCB board is transported is improved.

[0053] Reference Figures 1 to 5 A control member 9 is provided on the conveying frame 1 and the mounting sleeve 6. The control member 9 includes a controller 91 and a sensor 92. The sensor 92 is provided on the suction pipe 62. The controller 91 is provided on the conveying frame 1. The signal output end of the sensor 92 is electrically connected to the signal receiving end of the controller 91. The control end of the controller 91 is connected to a vacuum pump that provides negative pressure to the intermediate cavity 77, and is used to control the switch of the vacuum pump. The sensor 92 is provided as a pressure sensor. The sensor 92 is provided at one end of the suction pipe 62 close to the slider 7, and the detection end of the sensor 92 extends to the port of the suction pipe 62. The sensor 92 is provided as a pressure sensor, which is used to detect whether the slider 7 moves to abut against the end of the suction pipe 62, that is, to detect whether the corresponding suction pipe 62 is in a blocked state. The sensor 92 is used to detect whether the suction cup 5 is adsorbed on the PCB board, that is, when the slider 7 moves to block the corresponding suction pipe 62, the suction cup 5 is not adsorbed on the PCB board.

[0054] In this embodiment, a threshold is set according to the number of suction cups 5 that are not adsorbed to the PCB board. After the induction component 92 detects that the number of non-adsorption exceeds the threshold, the controller 91 controls the vacuum pump to stop working. Specifically, in this embodiment, whether the threshold is exceeded is determined based on the three states of adsorption of the suction cup 5. State 1 is that at least one of the four suction cups 5 near the corners of the PCB board does not adsorb the PCB board; state 2 is that at least two of the consecutive adjacent suction cups 5 do not adsorb the PCB board; state 3 is that more than three of the multiple suction cups 5 do not adsorb the PCB board. In other embodiments, state 2 and state 3 can be adaptively adjusted according to the size of the PCB board to adjust the number of suction cups 5 adsorbed. If any of the three states is met, it is determined that the threshold is reached. When the PCB board is adsorbed by the suction cup 5, the controller 91 determines the adsorption quantity and position of the suction cup 5 according to the signal transmitted by the induction element 92, and then determines whether it belongs to the above three adsorption states. If it belongs to any one of them, the controller 91 controls the vacuum pump to turn off, stops the adsorption of all suction cups 5, that is, stops the transportation of the PCB board, and reduces the phenomenon of deformation, damage or falling of the PCB board during transportation due to excessive number of unadsorbed suction cups 5 or suction cups 5 at designated positions not adsorbed on the PCB board. In other embodiments, multiple suction cups 5 can also be divided into multiple areas, and it is set that more than one area is not completely adsorbed on the PCB board, which is also considered to exceed the threshold. In order to ensure the transportation effect, the vacuum pump's suction power can also be increased after the controller 91 determines that it exceeds the threshold, that is, the adsorption force of the suction cup 5 is increased. If it still exceeds the threshold after the increase, the transportation is stopped. If it is reduced to within the threshold, the PCB board continues to be transported.

[0055] The implementation principle of the present invention is as follows: the adjusting member 12 adaptively adjusts the distance between the two groups of receiving plates 4 according to the size of the PCB board to be conveyed, and then the pushing member 3 drives the conveying frame 1 to move so that the suction cup 5 moves to the PCB board, and the vacuum pump evacuates air to form a negative pressure in the middle cavity 77, and the suction cup 5 is adsorbed on the PCB board under the action of the negative pressure. When bubbles appear at the position corresponding to the suction cup 5 on the PCB board, the suction cup 5 cannot be adsorbed, and the suction pipe 1 62 will continue to evacuate air to ensure that the middle cavity 77 is under negative pressure, generating airflow in the through hole 76, and driving the impeller 8 to rotate when the airflow passes through the impeller 8, and the impeller 8 rotates through the gear 2 81 and the gear ring 61 to drive the slider 7 to rotate, and the rotation of the slider 7 drives the suction cup 5 eccentrically set on the slider 7 to rotate, and the position of the suction cup 5 relative to the PCB board is adjusted until the suction cup 5 is adsorbed on the PCB board, and the suction effect of the suction cup 5 on the PCB board is improved so as to transport it. In addition, when the suction cup 5 rotates, the guide block 611 slides in the guide groove 1 71. When the guide block 611 moves to the guide groove 2 72 and the suction cup 5 is still not adsorbed on the PCB, the guide block 611 will move into the guide groove 2 72. At the same time, the slider 7 moves toward the suction tube 1 62 under the action of the negative pressure in the middle cavity 77 until it abuts against the suction tube and blocks the suction tube 1 62. At this time, the sensor 92 transmits the signal of the suction cup 5 not being adsorbed to the controller 91. The controller 91 determines whether the number of the suction cups 5 that have not been adsorbed reaches a threshold value. When the threshold value is reached, the transportation of the PCB is stopped, thereby reducing the phenomenon that the PCB is deformed or damaged due to uneven force during the transportation process caused by too many suction cups 5 not adsorbing the PCB, thereby ensuring the transportation effect.

[0056] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A conveying device for defoaming a PCB board, comprising a conveying frame (1) arranged on the defoaming device (01) for conveying, characterized in that: The device also comprises an adsorption member (2), the adsorption member (2) comprising a suction cup (5) and a receiving plate (4) connected to the conveying frame (1), the suction cup (5) being arranged on the side of the receiving plate (4) for adsorbing the PCB board, the receiving plate (4) being provided with a mounting sleeve (6), a slider (7) being rotatably arranged in the mounting sleeve (6), a side of the slider (7) close to the receiving plate (4) and the mounting sleeve (6) being surrounded to form an intermediate cavity (77), a suction pipe (62) being arranged on the mounting sleeve (6), the suction pipe (62) being connected to the intermediate cavity (77) for extracting air so as to form a negative pressure in the intermediate cavity (77), the suction cup (5) being arranged on the slider (7) On a side away from the receiving plate (4), the rotation axes of the suction cup (5) and the slider (7) are arranged at intervals, a through hole (76) for connecting the suction cup (5) and the intermediate cavity (77) is opened through the slider (7), an impeller (8) is rotatably arranged on a side of the slider (7) close to the intermediate cavity (77), the impeller (8) is arranged close to the through hole (76) so that when the airflow in the through hole (76) passes through the impeller (8), the impeller (8) is driven to rotate, a gear ring (61) is coaxially arranged on the inner wall of the mounting sleeve (6) and the slider (7), and a gear 2 (81) meshing with the gear ring (61) is arranged on the rotation axis of the impeller (8).

2. The PCB defoaming conveying equipment according to claim 1, characterized in that: The slider (7) is slidably arranged in the installation sleeve (6) in the direction of the receiving plate (4); a guide groove 1 (71) and a guide groove 2 (72) are provided on the side of the slider (7); the guide groove 1 (71) is arranged around the slider (7); the guide groove 2 (72) is arranged at one end of the guide groove 1 (71) away from the receiving plate (4); the guide groove 2 (72) is arranged along the sliding direction of the slider (7); the guide groove 2 (72) is arranged along the sliding direction of the receiving plate (4); a guide block (611) is arranged on the inner wall of the gear ring (61); the guide block (611) is slidably arranged in the guide groove 1 (71) and the guide groove 2 (72); the center of the suction tube 1 (62) is spaced from the rotation axis of the slider (7); when the slider (7) moves to abut against the suction tube 1 (62), the slider (7) blocks the suction tube 1 (62).

3. The PCB defoaming conveying equipment according to claim 2, characterized in that: A sealing ring (73) is coaxially arranged on the outside of the sliding block (7), and the sealing ring (73) is in sliding contact with the inner wall of the mounting sleeve (6).

4. The PCB defoaming conveying equipment according to claim 3, characterized in that: An elastic member 1 (74) is provided between the sealing ring (73) and the gear ring (61). The elastic member 1 (74) is connected to the sealing ring (73) and the gear ring (61) respectively. The elastic member 1 (74) is used to drive the guide block (611) to slide in the guide groove 1 (71) along an end away from the guide groove 2 (72).

5. The PCB defoaming conveying device according to claim 4, characterized in that: A second elastic member (75) is provided on the side of the sealing ring (73) facing away from the receiving plate (4), and the two ends of the second elastic member (75) are respectively connected to the sealing ring (73) and the inner wall of the mounting sleeve (6). The second elastic member (75) is used to drive the slider (7) to slide in a direction away from the receiving plate (4).

6. The PCB defoaming conveying equipment according to claim 1, characterized in that: At least two groups of adsorption components (2) are provided, and the receiving plates (4) in the plurality of adsorption components (2) are arranged in parallel and at intervals, and each group of adsorption components (2) comprises a plurality of suction cups (5), and the plurality of suction cups (5) in each group of adsorption components (2) are arranged along the length direction of the receiving plates (4).

7. The PCB defoaming conveying device according to claim 1, characterized in that: A controller (91) is provided on the conveying frame (1); a sensing element (92) is provided at one end of the suction tube (62) close to the slider (7); a signal output end of the sensing element (92) is electrically connected to a signal receiving end of the controller (91); the sensing element (92) is used to detect whether the slider (7) is in contact with the suction tube (62); a control end of the controller (91) is connected to a switch of a negative pressure pump that provides negative pressure to the middle cavity (77); after the sensing element (92) detects that the number of suction cups (5) that are not adsorbed on a PCB board reaches a threshold value, the controller (91) controls the negative pressure pump to turn off and stop conveying the PCB board.

8. The PCB defoaming conveying device according to claim 2, characterized in that: A rubber layer is provided on one side of the slider (7) close to the suction tube one (62), and the slider (7) abuts against the suction tube one (62) via the rubber layer.

9. The PCB defoaming conveying device according to claim 2, characterized in that: The end of the suction tube 1 (62) extends into the middle chamber (77), and the length of the suction tube 1 (62) in the middle chamber (77) is greater than the height of the impeller (8) above the side of the slider (7).

10. The PCB defoaming conveying device according to claim 1, characterized in that: The suction cup (5) comprises a second suction tube (51) and a suction head (52); the second suction tube (51) is connected to the slider (7) and communicates with the through hole (76); the suction head (52) is arranged on a side of the second suction tube (51) away from the slider (7); and a side of the second suction tube (51) close to the suction head (52) extends to the outside of the mounting sleeve (6).

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