A sheet conveying device

Abstract

The present invention relates to the technical field of sheet conveying, and specifically discloses a sheet conveying device, which includes an adsorbing member arranged on a frame. The adsorbing member includes a suction nozzle, and a cleaning member and a driving member are arranged inside the suction nozzle; the driving member includes: a rotating sleeve rotatably assembled inside the suction nozzle, and blades arranged on the side surface of the rotating sleeve; the cleaning member includes: a receiving portion slidably assembled up and down inside the rotating sleeve, a cleaning roller rotatably connected to the receiving portion, and a first rotating member connecting the cleaning roller and the receiving portion. The first rotating member drives the cleaning roller to rotate. The receiving portion is in threaded cooperation with the rotating sleeve, and the cleaning roller is arranged inside the rotating sleeve; when the suction nozzle does not adsorb the sheet, the airflow formed inside it passes through the blades and drives the rotating sleeve to rotate. After the rotating sleeve rotates and drives the cleaning roller to move outside the rotating sleeve, the cleaning roller rotates with the rotating sleeve to clean the impurities on the surface of the sheet and the suction nozzle; the sheet conveying device of the present invention has the effect of cleaning the impurities on the sheet to facilitate adsorption by the suction nozzle.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet conveying, and particularly relates to a sheet conveying device. Background Art

[0002] A sheet refers to a flat material with a relatively thin thickness, such as a film sheet made of plastic. During the processing of the sheet, it is usually necessary to use a suction cup to place the stacked sheets one by one on the conveying device, and the conveying device conveys the sheet to the next process for processing.

[0003] A patent document with the publication number CN107758280B discloses a sheet loading system, including a sheet placement rack, a sheet picking device, and a conveying device. The sheet placement rack includes a bottom plate for placing a sheet stack on the bottom plate. The sheet picking mechanism includes a suction cup, the suction port of the suction cup faces downward and is close to the top of the sheet stack for picking up the sheet from the top of the sheet stack. The sheet picking mechanism further includes a transfer device for transferring the sheet picked up by the suction cup to the conveying device. The conveying device is used to receive the sheet transferred by the transfer device and transfer the sheet to a predetermined position. By setting the sheet placement rack, the sheet picking device, and the conveying device, and by setting a transfer device on the sheet picking device, the sheet picked up by the sheet picking mechanism from the sheet placement rack is transferred to the conveying device.

[0004] However, the following problems still exist in this solution. When the sheet is conveyed by the suction cup, the suction cup adsorbs the sheet relying on the sealed space formed between it and the sheet surface. If there are impurities such as dust, oil stains, and particles on the sheet surface or contaminants on the suction nozzle, it will cause the suction cup to not contact the sheet sufficiently, unable to form an effective vacuum, or the impurities will hinder the close fit between the suction cup and the sheet, reducing the ability to maintain the vacuum negative pressure, ultimately resulting in adsorption failure or falling off midway. Additionally, in other existing technologies, multiple suction cups are used to adsorb the sheet simultaneously, but there will still be a situation where some of the suction nozzles cannot adsorb the sheet due to impurities, making the sheet prone to bending deformation or even damage due to uneven force during transfer, and when placing the sheet on the conveying device, it is prone to deviation due to bending, affecting subsequent processing. Summary of the Invention

[0005] The present invention provides a sheet conveying device, aiming to solve the problem in the related technology that the suction nozzle cannot effectively adsorb the sheet due to impurities on the sheet surface.

[0006] The sheet conveying device of the present invention includes an adsorbing member arranged on a frame for transferring the sheet. The adsorbing member includes a suction nozzle for adsorbing the sheet, and a cleaning member and a driving member are arranged in the suction nozzle;

[0007] The driving member includes: a rotating sleeve rotatably assembled in the suction nozzle, and blades inclined on the side surface of the rotating sleeve;

[0008] The cleaning part includes: a receiving part slidably assembled up and down in the rotating sleeve, a cleaning roller rotatably connected to the receiving part, and a first rotating part connected to the cleaning roller and the receiving part. The first rotating part is used to drive the cleaning roller to rotate to a horizontal state. The receiving part is in threaded cooperation with the rotating sleeve, and the cleaning roller is arranged in the rotating sleeve.

[0009] When the suction nozzle does not adsorb the sheet, the airflow formed inside it passes through the blades and drives the rotating sleeve to rotate. The rotation of the rotating sleeve drives the receiving part and the cleaning roller to move downward. After the cleaning roller moves to the outside of the rotating sleeve, the first rotating part drives the cleaning roller to rotate and be located between the sheet and the suction nozzle. The cleaning roller rotates with the rotating sleeve to clean the impurities on the surfaces of the sheet and the suction nozzle.

[0010] The effect is that the adsorbing part adsorbs the sheet to convey the sheet. When the suction nozzle does not adsorb the sheet, there is a gap between it and the sheet. At the same time, the specified negative pressure is not reached inside the suction nozzle, and the suction nozzle continuously sucks air, causing an airflow to be formed inside the suction nozzle. The airflow passes through the blades to drive the blades to rotate, the blades drive the rotating sleeve to rotate, the rotation of the rotating sleeve drives the receiving part to move downward, the receiving part drives the cleaning roller to move downward and gradually move to the outside of the rotating sleeve. Then the first rotating part drives the cleaning roller to rotate to between the sheet and the suction nozzle. At this time, the suction nozzle continuously sucks air, the rotating sleeve still maintains a rotating state, and at the same time drives the cleaning roller to rotate accordingly. The rotating cleaning roller covers the area on the sheet corresponding to the suction nozzle to clean the impurities on the surfaces of the sheet and the suction nozzle, so that the suction nozzle can stably adsorb on the sheet and improve the stability during sheet conveying.

[0011] Preferably, the adsorbing part includes a mounting plate for mounting the suction nozzle. A sliding rod and a fixed sleeve are assembled on the mounting plate. The fixed sleeve and the sliding rod are both coaxially arranged inside the suction nozzle. The sliding rod is arranged inside the fixed sleeve. The receiving part is in sliding cooperation with the sliding rod, and the rotating sleeve is in rotational cooperation with the fixed sleeve.

[0012] The effect is that the receiving part is in sliding cooperation with the sliding rod, and the sliding rod restricts the moving direction of the receiving part, so that the receiving part can only move up and down in the rotating sleeve. So that when the rotating sleeve rotates, it can drive the receiving part to move up and down. At the same time, the rotating sleeve is in cooperation with the fixed sleeve, so that the rotating sleeve can rotate under the action of the blades.

[0013] Preferably, the receiving part includes a slider, an intermediate block and a first elastic part. The slider is in sliding cooperation with the sliding rod. The cleaning roller is connected to the intermediate block. One end of the first elastic part is connected to the slider, and the other end is rotatably connected to the intermediate block. The slider is in threaded cooperation with the rotating sleeve. The intermediate block is slidably assembled up and down in the rotating sleeve. The cleaning roller rotates with the rotating sleeve through the intermediate block. When the cleaning roller cleans the impurities, the intermediate block stops moving, and the slider continues to move downward and compresses the first elastic part.

[0014] The effect is that when the blade drives the rotating sleeve to rotate, the rotating sleeve drives the slider to move downward when it rotates. The slider drives the intermediate block to move downward through the first elastic member until the cleaning roller is driven to move outside the rotating sleeve. When the cleaning roller rotates to the horizontal state, that is, when the cleaning roller is between the sheet material and the suction nozzle, the cleaning roller abuts against the sheet material. At this time, the intermediate block stops moving, but drives the cleaning roller to rotate to clean impurities as the rotating sleeve rotates. At the same time, the rotating sleeve drives the slider to move downward and approach the intermediate block, and compresses the first elastic member. Before the first elastic member is completely compressed, the cleaning roller completes the cleaning of impurities. By arranging the first elastic member between the intermediate block and the slider, the slider can move relative to the intermediate block so that the cleaning roller can clean impurities.

[0015] Preferably, a second rotating member is arranged in the fixed sleeve. The second rotating member is connected to the rotating sleeve. When the rotating sleeve rotates and drives the cleaning roller to move downward, the second rotating member is twisted. When the air extraction stops, the airflow inside the suction nozzle disappears, and the second rotating member drives the rotating sleeve to rotate in the reverse direction to drive the cleaning roller to move into the rotating sleeve.

[0016] The effect is that when the rotating sleeve rotates and moves downward, the second rotating member is twisted and stressed. After the sheet material and the suction nozzle are cleaned, the suction nozzle stops extracting air, the airflow inside the suction nozzle disappears, the blade stops rotating, the second rotating member drives the rotating sleeve to rotate in the reverse direction, and then drives the slider to move upward, and further drives the slider and the intermediate block to move to the initial position, so that the cleaning roller moves into the rotating sleeve again, reducing the phenomenon that the cleaning roller interferes with the suction nozzle to adsorb the sheet material, and at the same time adjusting the cleaning roller to the initial position so that when the suction nozzle cannot adsorb the sheet material next time, the suction nozzle and the sheet material can be cleaned.

[0017] Preferably, the suction nozzle includes a first sliding sleeve and a second sliding sleeve. The first sliding sleeve is connected to the mounting plate. The second sliding sleeve is slidably matched with the first sliding sleeve. The suction head of the suction nozzle is arranged on the second sliding sleeve. An elastic member for connecting the two is arranged between the second sliding sleeve and the first sliding sleeve. The elastic member is used to drive the second sliding sleeve to slide downward away from the first sliding sleeve. When the cleaning roller rotates to the horizontal state, it cooperates with the suction head to drive the second sliding sleeve to slide upward so that the cleaning roller is between the suction nozzle and the sheet material.

[0018] The effect is that after the cleaning roller moves outside the rotating sleeve, during the process of the cleaning roller rotating to the horizontal state, it cooperates with the suction nozzle to drive the second sliding sleeve to move upward until the cleaning roller is between the suction nozzle and the sheet material. By the sliding fit between the second sliding sleeve and the first sliding sleeve, the phenomenon that the suction nozzle interferes with the cleaning roller entering between the suction nozzle and the sheet material is reduced. At the same time, the cleaning roller is clamped between the suction nozzle and the sheet material, so that the cleaning roller is in full contact with the sheet material and the suction nozzle, thereby improving the cleaning effect on impurities.

[0019] Preferably, a feeding component, a conveying component and a connecting frame are arranged on the frame. The feeding component is used to place stacked sheet materials. The connecting frame slides left and right between the feeding component and the conveying component. The connecting frame is arranged above the feeding component and the conveying component. A lifting member is arranged on the connecting frame. The lifting member is connected to the suction attachment and is used to drive the suction attachment to move up and down.

[0020] The effect is that the connecting frame reciprocates between the loading component and the conveying component, and at the same time, the lifting member drives the adsorbing member to move up and down to adsorb the sheet material and place the sheet material on the conveying component, realizing the transfer of the sheet material.

[0021] Preferably, a sensing member is arranged inside the suction nozzle. The sensing member is used to detect the internal air pressure of the suction nozzle. A controller is arranged on the mounting plate. The sensing member is electrically connected to the controller. A power member is arranged between the mounting plate and the lifting member. The power member is used to drive the mounting plate to rotate to change the position where the suction nozzle adsorbs the sheet material. When the suction nozzle still cannot adsorb the sheet material after the cleaning roller cleans the impurities, the controller controls the power member to rotate the mounting plate.

[0022] The effect is that when the suction nozzle does not adsorb the sheet material, the internal negative pressure thereof does not reach the specified value, and the sensing member sends a signal to the controller, that is, when it is detected that the inside of the suction nozzle does not reach the specified value, it is regarded that the suction nozzle is not adsorbed on the sheet material. When it is first detected that the specified negative pressure value is not reached, the air extraction pump continuously extracts air, and the rotating sleeve rotates to drive the cleaning roller to move to the outside of the rotating sleeve to clean the impurities. After cleaning, the sheet material is adsorbed again through the suction nozzle. If it is still not detected that the negative pressure value is not reached after cleaning, that is, after the controller continuously receives two signals, it means that the sheet material and the suction nozzle still cannot be adsorbed after cleaning. At this time, the controller controls the power member to start, and the power member drives the mounting plate to rotate, changing the position where the suction nozzle adsorbs the sheet material, and adsorbing the sheet material again. Repeat the above operations. If the controller still continuously receives two signals sent by the sensor, it means that the sheet material still cannot be adsorbed after changing the position and cleaning the suction nozzle and the sheet material. At this time, it may be that the suction nozzle is damaged, so the suction nozzle is replaced or the machine is stopped for debugging to replace the damaged suction nozzle in time. By setting the sensing member and the controller, the damaged suction nozzle can be found in time, avoiding the cleaning roller repeatedly cleaning the suction nozzle and the sheet material, which affects the loading efficiency.

[0023] Preferably, two groups are arranged at intervals between the mounting plate and the suction nozzle. Two suction nozzles are arranged on each mounting plate, and the suction nozzles on the two groups of mounting plates are evenly distributed.

[0024] The effect is that multiple suction nozzles adsorb the sheet material at the same time, improving the stability during the conveyance of the sheet material.

[0025] Preferably, loading components and adsorbing members are arranged on both sides of the conveying component, and the adsorbing members on the two groups of the conveying component alternately place the sheet material on the conveying component.

[0026] The effect is that through the loading components and the adsorbing members on both sides of the conveying component, the two groups of adsorbing members alternately feed materials and alternately place the sheet material on the conveying component, improving the conveying efficiency of the sheet material.

[0027] Preferably, a through hole communicating with the suction nozzle is formed in the mounting plate, and a suction pipe communicating with the through hole is arranged on the mounting plate. The air pump sucks air through the suction pipe and the through hole to the suction nozzle.

[0028] The effect is that the air pump sucks air through the suction pipe to the suction nozzle, making the inside of the suction nozzle in a negative pressure state so that the suction nozzle can adsorb the sheet material. At the same time, when the sheet material is not adsorbed, an air flow can be formed inside the suction nozzle to drive the rotating sleeve to rotate, cleaning the sheet material and the suction nozzle.

[0029] Beneficial effects:

[0030] 1. In the present invention, a rotating sleeve is arranged inside the suction nozzle, and a receiving portion and a cleaning roller are arranged inside the rotating sleeve. When the suction nozzle is not adsorbed on the sheet material, an air flow is formed inside the suction nozzle. The air flow drives the rotating sleeve to rotate through the blades. The rotation of the rotating sleeve drives the receiving portion and the cleaning roller to move, so that the cleaning roller moves to the outside of the rotating sleeve. At the same time, the first rotating member drives the cleaning roller to rotate between the suction nozzle and the sheet material. The cleaning roller rotates with the rotating sleeve to clean the sheet material and the suction nozzle, so that the suction nozzle can be adsorbed on the sheet material, improving the stability during sheet material transportation.

[0031] 2. A first elastic member is arranged between the slider and the intermediate block. After the cleaning roller rotates to the horizontal state and abuts against the sheet material, the intermediate block stops moving. When the rotating sleeve rotates to drive the cleaning roller to rotate through the intermediate block, the slider continues to move and presses the first elastic member, enabling the slider to move a certain distance relative to the intermediate block, and completing the cleaning of the sheet material before the first elastic member is completely compressed, avoiding the phenomenon that the movement of the slider and the rotation of the rotating sleeve are interfered after the cleaning roller abuts against the sheet material, and improving the stability of the operation of the entire structure.

[0032] 3. The suction nozzle is provided with a first sliding sleeve and a second sliding sleeve, so that when the cleaning roller rotates and cooperates with the suction nozzle, the second sliding sleeve can be driven to slide upward by the suction nozzle. After the cleaning roller contacts the sheet material and continues to move, the cleaning roller rotates under the action of the sheet material and the first rotating member. The cooperation between the cleaning roller and the suction nozzle drives the suction nozzle to move upward, making the suction nozzle move a certain distance relative to the sheet material until the cleaning roller rotates between the suction nozzle and the sheet material, realizing the simultaneous cleaning of the cleaning roller and the sheet material when the cleaning roller rotates. In addition, the suction nozzle keeps abutting against the cleaning roller under the action of the second elastic member, improving the cleaning effect on the sheet material and the suction nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is the overall structural schematic diagram of the embodiment of the present invention.

[0034] Figure 2 is the side view of the embodiment of the present invention.

[0035] Figure 3 is Figure 2 the enlarged schematic diagram at A in

[0036] Figure 4It is a schematic structural diagram of the adsorbing component in the embodiment of the present invention.

[0037] Figure 5 It is a schematic structural diagram of the suction nozzle in the embodiment of the present invention.

[0038] Figure 6 It is a schematic structural diagram of the cleaning component in the embodiment of the present invention.

[0039] Figure 7 It is Figure 6 an enlarged schematic diagram of part B in

[0040] Figure 8 It is a partial exploded schematic diagram of the cleaning roller and the receiving part in the embodiment of the present invention.

[0041] Figure 9 It is a schematic diagram of the state when the cleaning roller is located between the suction nozzle and the sheet in the embodiment of the present invention.

[0042] Reference numerals:

[0043] 01, sheet; 1, frame; 2, conveying component; 3, loading component; 31, loading rack; 32, pushing part; 33, pushing plate; 34, blocking rod; 4, connecting frame; 5, adsorbing component; 51, mounting plate; 511, through hole; 512, suction pipe; 52, suction nozzle; 521, first sliding sleeve; 522, second sliding sleeve; 523, second elastic part; 6, lifting component; 7, cleaning component; 71, sliding rod; 72, receiving part; 721, slider; 722, middle block; 723, first elastic part; 724, relief groove; 73, cleaning roller; 74, first rotating part; 8, driving component; 81, fixed sleeve; 82, rotating sleeve; 83, blade; 84, second rotating part; 9, connecting ring; 91, power part. Detailed description of the specific implementation

[0044] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0045] As Figures 1 to 9 shown, the sheet conveying device of the present invention includes: a conveying component 2 assembled on the frame 1 for conveying the sheet 01, a loading component 3 arranged on one side of the conveying component 2 for feeding, and a transfer component slidably assembled left and right between the conveying component 2 and the loading component 3. The conveying component 2 is set as a conveyor belt. A plurality of sheets 01 are stacked and placed in the loading component 3. The transfer component reciprocates between the loading component 3 and the conveying component 2 to place the sheets 01 in the loading component 3 on the conveying component 2 one by one for conveying, so as to perform subsequent processing on the sheets 01.

[0046] Refer to Figures 2 to 7, the transfer component includes: a connecting frame 4 slidably assembled left and right on the frame 1, a suction attachment 5 provided on the connecting frame 4, a lifting member 6 provided between the connecting frame 4 and the suction attachment 5, a control member connected to the suction attachment 5, a cleaning member 7 provided on the suction attachment 5, and a driving member 8. A cylinder is provided on the frame 1, and the output end of the cylinder is connected to the connecting frame 4. The cylinder drives the connecting frame 4 to reciprocate between the feeding component 3 and the conveying component 2 through the telescopic movement of the piston rod. The suction attachment 5 is used to adsorb the sheet 01. The lifting member 6 drives the suction attachment 5 to move up and down. The control member adjusts the position of the suction attachment 5 for adsorbing the sheet 01. The driving member 8 is connected to the cleaning member 7. When impurities on the surface of the sheet 01 affect the adsorption of the suction attachment 5, the driving member 8 drives the cleaning member 7 to clean the impurities so that the suction attachment 5 can adsorb the sheet 01.

[0047] Referring to Figures 2 to 5 , the suction attachment 5 includes: a mounting plate 51 connected to the lifting member 6, a suction nozzle 52 provided below the mounting plate 51. A through hole 511 is formed in the mounting plate 51, and the through hole 511 communicates with the suction nozzle 52. A suction pipe 512 is provided on the mounting plate 51, and the suction pipe 512 communicates with the suction nozzle 52 through the through hole 511. The suction pipe 512 is connected to a vacuum pump. After the suction nozzle 52 contacts the sheet 01, the vacuum pump evacuates air through the suction pipe 512 and the through hole 511, making the inside of the suction nozzle 52 in a negative pressure state to adsorb the sheet 01. There are two sets of intervals between the mounting plate 51 and the suction nozzle 52, and two suction nozzles 52 are provided on each mounting plate 51, so that multiple suction nozzles 52 are evenly distributed in the horizontal plane. The sheet 01 is adsorbed by multiple suction nozzles 52 to improve the stability when adsorbing the sheet 01.

[0048] Referring to Figures 5 to 8 , the cleaning member 7 includes: a slide bar 71 connected to the mounting plate 51, a receiving portion 72 slidably assembled up and down outside the slide bar 71, a cleaning roller 73 provided at the bottom of the receiving portion 72, and a rotating member one 74 provided between the cleaning roller 73 and the receiving portion 72. The slide bar 71 is coaxially arranged with the suction nozzle 52. The cleaning roller 73 is rotationally matched with the receiving portion 72. The rotating member one 74 is set as a torsion spring, and both ends of the torsion spring are respectively connected to the cleaning roller 73 and the receiving portion 72. The rotating member one 74 is used to drive the cleaning roller 73 to rotate to a horizontal state. A wiping layer is provided on the outside of the cleaning roller 73, and the wiping layer is used to wipe impurities such as dust or oil stains. The cleaning member 7 is provided in the driving member 8. The wiping layer is set as a sponge sleeve. After the cleaning roller 73 rotates to the horizontal state, the sponge sleeve contacts the sheet 01 and the suction nozzle 52 respectively to clean them. At the same time, the sponge sleeve is sleeved outside the cleaning roller 73, which is convenient for replacing the sponge sleeve after long-term use.

[0049] In the initial state, the cleaning roller 73 is inside the driving member 8 and in a vertical state. When the suction nozzle 52 does not adsorb the sheet 01, the driving member 8 drives the receiving portion 72 to move downward. The receiving portion 72 drives the cleaning roller 73 to move away from the driving member 8. At the same time, the cleaning roller 73 moves close to the sheet 01. Under the action of the first rotating member 74, the cleaning roller 73 rotates to a horizontal state, as shown in Figure 9 shown. At the same time, it is located between the suction nozzle 52 and the sheet 01. Then the driving member 8 drives the cleaning roller 73 to rotate to clean the impurities on the position of the sheet 01 corresponding to the suction nozzle 52 and on the suction nozzle 52, so as to perform subsequent adsorption of the sheet 01.

[0050] Referring to Figures 5 to 8 , the receiving portion 72 includes: a slider 721 that slides up and down with the sliding rod 71, an intermediate block 722 connected to the cleaning roller 73, and a first elastic member 723. The slider 721 and the intermediate block 722 are arranged at intervals up and down. The intermediate block 722 is arranged below the slider 721. The first elastic member 723 is arranged between the slider 721 and the intermediate block 722. The first elastic member 723 is set as a spring, and both ends of the spring are respectively connected to the slider 721 and the intermediate block 722. The slider 721 cooperates with the driving member 8, and the intermediate block 722 is slidably assembled on the driving member 8 up and down.

[0051] The driving member 8 drives the slider 721 to move downward. The slider 721 drives the intermediate block 722 and the cleaning roller 73 to move through the first elastic member 723. After the cleaning roller 73 rotates to a horizontal state, the rotating sleeve 82 drives the cleaning roller 73 to rotate with the rotating sleeve 82 through the intermediate block 722 to clean the sheet 01. The cleaning roller 73 abuts against the sheet 01, and the intermediate block 722 stops moving. When the cleaning roller 73 rotates to clean the impurities, the rotating sleeve 82 drives the slider 721 to continue to move downward close to the intermediate block 722 and compress the first elastic member 723. Before the first elastic member 723 is completely compressed, the cleaning of the sheet 01 and the suction nozzle 52 is completed. The air pump stops pumping air, the rotating sleeve 82 stops rotating, the first rotating member 74 drives the rotating sleeve 82 to move reversely and reset, and at the same time the first elastic member 723 resets, so that the distance between the intermediate block 722 and the slider 721 returns to the initial length for the next cleaning.

[0052] Referring to Figure 6 and Figure 7 , a connecting ring 9 is rotatably arranged on one side of the intermediate block 722 close to the first elastic member 723. The connecting ring 9 is coaxially arranged with the rotating sleeve 82. The first elastic member 723 is connected to the connecting ring 9, that is, the first elastic member 723 is rotationally matched with the intermediate block 722 through the connecting ring 9, so that when the slider 721 moves up and down, the intermediate block 722 can rotate while moving with the rotating sleeve 82, reducing the phenomenon that the first elastic member 723 interferes with the rotation of the intermediate block 722.

[0053] Referring to Figure 6 and Figure 7, a relief groove 724 is formed above the middle block 722. The end of the sliding rod 71 passes through the slider 721 and extends into the relief groove 724, and the sliding rod 71 is spaced from the inner wall of the relief groove 724, so that the sliding rod 71 does not contact the middle block 722, reducing the phenomenon that the sliding rod 71 cooperates with the slider 721 in the middle rod.

[0054] Refer to Figures 5 to 8 , the driving member 8 includes: a fixed sleeve 81 fixedly connected to the mounting plate 51, a rotating sleeve 82 rotatably fitted with the fixed sleeve 81, a blade 83 arranged outside the rotating sleeve 82, and a rotating member two 84 arranged inside the fixed sleeve 81. The fixed sleeve 81 is coaxially arranged outside the sliding rod 71. The rotating sleeve 82 is fitted with the lower end of the fixed sleeve 81. A threaded groove is formed on the inner wall of the rotating sleeve 82. The receiving portion 72 is threadedly fitted with the rotating sleeve 82 through the threaded groove, that is, a thread cooperating with the threaded groove is arranged on the side of the slider 721. The middle block 722 is slidably assembled up and down in the rotating sleeve 82. A plurality of blades 83 are arranged around the rotating sleeve 82. The blades 83 are inclined. The rotating member two 84 is arranged as a torsion spring. The torsion spring is sleeved outside the sliding rod 71. One end of the torsion spring is connected to the inner wall of the fixed sleeve 81, and the other end is connected to the rotating sleeve 82.

[0055] In the initial state, the cleaning roller 73 is arranged in the rotating sleeve 82. When the suction nozzle 52 does not adsorb the sheet 01, the air pump continuously pumps air to the suction nozzle 52 in order to make the suction nozzle 52 reach the specified negative pressure, forming an air flow on the inner wall of the suction nozzle 52. The air flow drives the rotating sleeve 82 to rotate through the inclined blades 83. The rotation of the rotating sleeve 82 drives the slider 721 to move downward, thereby adjusting the position of the cleaning roller 73 until the cleaning roller 73 moves outside the rotating sleeve 82 to clean the impurities on the sheet 01 and the suction nozzle 52. At the same time, when the rotating sleeve 82 rotates, the rotating member two 84 rotates and is stressed. After the cleaning roller 73 wipes the sheet 01, the suction nozzle 52 stops pumping air. At this time, the blade 83 is not stressed, and the rotating sleeve 82 rotates in the opposite direction under the action of the rotating member two 84, thereby driving the slider 721 and the middle block 722 to move upward, and at the same time driving the cleaning roller 73 to move into the rotating sleeve 82 for resetting, so as to clean the sheet 01 again. At the same time, when pumping air again, it is convenient for the suction nozzle 52 to adsorb the position wiped by the cleaning roller 73.

[0056] Refer to Figure 5 and Figure 9 , the suction nozzle 52 includes a sliding sleeve one 521 connected to the mounting plate 51 and a sliding sleeve two 522 slidably fitted with the sliding sleeve one 521 up and down. The sliding sleeve two 522 is connected to the suction head of the suction nozzle 52. An elastic member two 523 is arranged between the sliding sleeve two 522 and the sliding sleeve one 521. The elastic member two 523 is arranged as a spring. The two ends of the spring are respectively connected to the sliding sleeve one 521 and the sliding sleeve two 522. The elastic member two 523 is used to drive the sliding sleeve two 522 to move downward.

[0057] When the suction nozzle 52 does not adsorb the sheet 01, the cleaning roller 73 moves between the suction nozzle 52 and the sheet 01. When the cleaning roller 73 contacts the suction head, the second sliding sleeve 522 is driven by the suction head to move upward, and at the same time, the second elastic member 523 is compressed, so that the cleaning roller 73 moves between the suction head and the sheet 01, reducing the phenomenon that the suction head interferes with the cleaning roller 73 to wipe the sheet 01. After the cleaning roller 73 moves back into the rotating sleeve 82, the second sliding sleeve 522 moves to the initial position under the action of the second elastic member 523.

[0058] To ensure the adsorption effect when the suction nozzle 52 adsorbs the sheet 01, a sealing ring is arranged between the second sliding sleeve 522 and the second sliding sleeve 522, so that the second sliding sleeve 522 remains sealed when sliding relative to the first sliding sleeve 521, reducing the phenomenon of air leakage in the sliding fit between the two.

[0059] Refer to Figure 2 and Figure 3 The lifting member 6 is set as a cylinder. The cylinder is arranged on the connecting frame 4. The piston rod of the cylinder is connected to the mounting plate 51. The up and down adjustment of the suction nozzle 52 is realized through the cylinder. When the connecting frame 4 moves to the feeding assembly 3, the lifting member 6 drives the suction nozzle 52 downward to the feeding assembly 3 to adsorb the sheet 01. After adsorbing the sheet 01, it drives the suction nozzle 52 to move upward. The connecting frame 4 drives the suction nozzle 52 to move above the conveyor belt. The lifting member 6 drives the suction nozzle 52 to move downward to place the sheet 01 on the conveyor belt, and finally drives the suction nozzle 52 to move upward again. The connecting frame 4 moves above the feeding assembly 3, and repeats the above operations to place the sheets 01 on the conveyor belt one by one.

[0060] The control member includes: a sensor arranged inside the suction nozzle 52, a controller arranged on the mounting plate 51, and a power member 91 connected to the mounting plate 51. The power member 91 is set as a motor. The output shaft of the motor is vertically downward. The output end of the lifting member 6 is connected to the power member 91. The output end of the power member 91 is connected to the mounting plate 51, which is used to drive the mounting plate 51 to rotate. The sensor is set as a pressure sensor, which is used to detect the air pressure inside the suction nozzle 52. The sensor is electrically connected to the signal receiving end of the controller. The control end of the controller is respectively electrically connected to the switch of the power member 91 and the switch of the air extraction pump, which is used to control the power member 91 and the air extraction pump.

[0061] After the cleaning roller 73 cleans the sheet 01, adsorption is carried out through the suction nozzle 52. If the suction nozzle 52 fails to adsorb on the sheet 01 again, the sensor detects that the negative pressure value inside the suction nozzle 52 does not reach the specified range and sends a signal to the controller. The controller stops the air extraction pump and at the same time controls the power member 91 to drive the mounting plate 51 to rotate, so that the suction nozzle 52 corresponds to different positions on the sheet 01, and adsorbs the sheet 01 again. If it still fails to adsorb, the machine stops to replace the corresponding suction nozzle 52.

[0062] The controller controls the rotation of the power component 91 after continuously receiving two signals sent by the sensor. When the sensor detects the signal for the first time, the air extraction pump continuously extracts air, and the cleaning roller 73 is used to clean the sheet 01 and the suction nozzle 52. When the second signal is received, it indicates that the suction nozzle 52 still fails to adsorb after cleaning. At this time, the controller controls the power component 91 to rotate to change the adsorption position, and determines whether the failure to adsorb is caused by the damage of the suction nozzle 52. If it still fails to adsorb, the suction nozzle 52 is replaced or the machine is stopped for debugging.

[0063] Refer to Figures 1 to 3 , the feeding assembly 3 includes: a feeding frame 31, a pushing member 32 installed on the feeding frame 31, a pushing plate 33 provided at the output end of the pushing member 32, and a retaining rod 34 provided on the feeding frame 31. The retaining rod 34 is provided above the feeding frame 31, and a plurality of retaining rods 34 are provided. The plurality of retaining rods 34 surround and form a structure for blocking the stacked sheets 01 to prevent the stacked sheets 01 from tipping over. The pushing member 32 is set as a cylinder, and the pushing member 32 drives the pushing plate 33 to move up and down. The pushing plate 33 is arranged between the plurality of retaining rods 34. The stacked sheets 01 are placed on the placing plate. The pushing member 32 drives the stacked sheets 01 to move upward through the pushing plate 33, and cooperates with the adsorbing member 5 for feeding.

[0064] Refer to Figure 1 and Figure 2 , a set of feeding assemblies 3 and transfer assemblies are provided on both sides of the conveyor belt. Each set of feeding assemblies 3 and transfer assemblies are provided with a plurality of them along the conveying direction of the conveyor belt. The plurality of feeding assemblies 3 and the plurality of transfer assemblies are arranged in one-to-one correspondence. When feeding, the two transfer assemblies alternately place the sheets 01 on the conveyor belt to improve the feeding efficiency of the sheets 01.

[0065] The implementation principle of the present invention is as follows: During feeding, the connecting frame 4 drives the suction nozzle 52 to move above the stacked sheets 01, and the lifting member 6 drives the suction nozzle 52 to move to the position of the sheet 01 to adsorb the sheet 01. After adsorbing the sheet 01, the lifting member 6 drives the suction nozzle 52 to move upward to the initial position, and the connecting frame 4 horizontally moves above the conveyor belt. The lifting member 6 drives the suction nozzle 52 to move downward again, places the sheet 01 on the conveyor belt, and at the same time the suction nozzle 52 stops adsorbing the sheet 01, so that the sheet 01 moves along with the conveyor belt, and the sheet 01 is conveyed by the conveyor belt to the next process for processing. Repeat the above operations to place the sheets 01 stacked in the feeding assembly 3 on the conveyor belt one by one for feeding.

[0066] When there are impurities at the position where the sheet 01 is adsorbed or on the suction nozzle 52, resulting in the suction nozzle 52 being unable to adsorb on the sheet 01, the specified negative pressure value is not reached inside the suction nozzle 52. The air extraction pump continuously extracts air, forming an air flow inside the suction nozzle 52. The air flow drives the blade 83 to rotate through the inclined blade 83. The blade 83 drives the rotating sleeve 82 to rotate. The rotation of the rotating sleeve 82 drives the receiving part 72 to slide downward relative to the sliding rod 71. The receiving part 72 drives the cleaning roller 73 to move. After the cleaning roller 73 moves to the outside of the rotating sleeve 82, the first rotating part 74 drives the cleaning roller 73 to rotate to a horizontal state. At the same time, the contact between the cleaning roller 73 and the suction nozzle 52 drives the second sliding sleeve 522 to slide upward, so that the cleaning roller 73 is located between the suction nozzle 52 and the sheet 01. The cleaning roller 73 rotates with the rotating sleeve 82 under the action of the middle block 722, cleaning the impurities on the sheet 01 and the suction nozzle 52. After the cleaning is completed, the air extraction is stopped, the blade 83 stops rotating, and the rotating sleeve 82 rotates in the reverse direction under the action of the second rotating part 84, driving the receiving part 72 to move upward until the cleaning roller 73 moves back into the rotating sleeve 82 again.

[0067] In addition, as the cleaning roller 73 retracts, it will contact the inner side of the suction nozzle 52, thereby cleaning the remaining positions inside the suction nozzle 52 to improve the stability when the suction nozzle 52 adsorbs the sheet 01.

[0068] The cleaning roller 73 cleans the position to be adsorbed on the sheet 01 and the suction nozzle 52, so that the suction nozzle 52 can adsorb on the sheet 01, reducing the phenomenon that the transportation of the sheet 01 is affected by impurities and improving the stability when transporting the sheet 01.

[0069] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A sheet conveying device, comprising an adsorption member arranged on a frame for transferring sheets, characterized in that: The adsorption member includes a suction nozzle for adsorbing sheets, and a cleaning member and a driving member are arranged in the suction nozzle; the driving member includes: a rotating sleeve rotatably assembled in the suction nozzle, and a blade obliquely arranged on the side of the rotating sleeve; the cleaning member includes: a receiving portion slidably assembled in the rotating sleeve, a cleaning roller rotatably connected to the receiving portion, and a rotating member 1 connected to the cleaning roller and the receiving portion, the rotating member 1 is used to drive the cleaning roller to rotate to a horizontal state, the receiving portion is threadedly matched with the rotating sleeve, and the cleaning roller is arranged in the rotating sleeve; When the suction nozzle does not suck the sheet, the airflow formed inside it passes through the blades and drives the rotating sleeve to rotate. The rotating sleeve drives the receiving part and the cleaning roller to move downward. After the cleaning roller moves to the outside of the rotating sleeve, the rotating part drives the cleaning roller to rotate and is between the sheet and the suction nozzle. The cleaning roller rotates with the rotating sleeve to clean impurities on the sheet and the suction nozzle. The adsorption member includes a mounting plate for mounting the suction nozzle, a slide rod and a fixed sleeve are mounted on the mounting plate, the fixed sleeve and the slide rod are coaxially arranged in the suction nozzle, the slide rod is arranged inside the fixed sleeve, the receiving portion is slidably matched with the slide rod, and the rotating sleeve is rotatably matched with the fixed sleeve; A rotating part 2 is arranged in the fixed sleeve and is connected to the rotating sleeve. When the rotating sleeve rotates and drives the cleaning roller to move downward, the rotating part 2 is twisted. When the air suction stops, the airflow inside the suction nozzle disappears, and the rotating part 2 drives the rotating sleeve to rotate in the opposite direction to drive the cleaning roller to move into the rotating sleeve.

2. The sheet material conveying device according to claim 1, characterized in that: The receiving part includes a slider, an intermediate block and an elastic member 1. The slider is slidably matched with the slide rod, the cleaning roller is connected to the intermediate block, one end of the elastic member 1 is connected to the slider, and the other end is rotatably connected to the intermediate block, the slider is threadedly matched with the rotating sleeve, the intermediate block is slidably assembled in the rotating sleeve, the cleaning roller rotates with the rotating sleeve through the intermediate block, and when the cleaning roller cleans impurities, the intermediate block stops moving, the slider continues to move downward and compresses the elastic member 1.

3. The sheet material conveying device according to claim 1, characterized in that: The suction nozzle includes a sliding sleeve 1 and a sliding sleeve 2. The sliding sleeve 1 is connected to the mounting plate. The sliding sleeve 2 is slidably matched with the sliding sleeve 1. The suction head of the suction nozzle is arranged on the sliding sleeve 2. An elastic member 2 connecting the sliding sleeve 2 and the sliding sleeve 1 is arranged between the sliding sleeve 2 and the sliding sleeve 1. The elastic member 2 is used to drive the sliding sleeve 2 to slide downward away from the sliding sleeve 1. When the cleaning roller rotates to a horizontal state, it cooperates with the suction head of the suction nozzle to drive the sliding sleeve 2 to slide upward, so that the cleaning roller is between the suction nozzle and the sheet.

4. The sheet material conveying device according to claim 1, characterized in that: The frame is provided with a loading assembly, a conveying assembly and a connecting frame. The loading assembly is used to place stacked sheets. The connecting frame slides left and right between the loading assembly and the conveying assembly. The connecting frame is arranged above the loading assembly and the conveying assembly. A lifting member is arranged on the connecting frame. The lifting member is connected to the adsorption member to drive the adsorption member to move up and down.

5. The sheet material conveying device according to claim 4, characterized in that: A sensor is provided inside the suction nozzle, which is used to detect the air pressure inside the suction nozzle. A controller is provided on the mounting plate, which is electrically connected to the sensor. A power component is provided between the mounting plate and the lifting component, which is used to drive the mounting plate to rotate to change the position of the suction nozzle to adsorb the sheet. When the suction nozzle still cannot adsorb the sheet after the cleaning roller cleans the impurities, the controller controls the power component to rotate the mounting plate.

6. The sheet material conveying device according to claim 5, characterized in that: Two groups of mounting plates and suction nozzles are arranged at intervals, two suction nozzles are arranged on each group of mounting plates, and the suction nozzles on the two groups of mounting plates are evenly distributed.

7. The sheet material conveying device according to claim 4, characterized in that: Both sides of the conveying assembly are provided with a feeding assembly and an adsorption member, and the adsorption members of the two groups of the conveying assembly alternately place the sheets on the conveying assembly.

8. The sheet material conveying device according to claim 1, characterized in that: A through hole connected to the suction nozzle is provided in the installation plate, a suction pipe connected to the through hole is provided on the installation plate, and an air pump sucks air from the suction nozzle through the suction pipe and the through hole.

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