Paper feeding mechanism for paper mounting machine

Abstract

The invention discloses a paper feeding mechanism for a paper mounting machine, which relates to the field of paper mounting machines, and comprises a paper feeding table corresponding to the paper feeding end of the paper mounting machine, a driving wheel mounted on the paper feeding table and used for conveying backing paper, and a rack mounted on the paper feeding table, a feeding unit used for conveying a backing paper pile to the paper feeding table, a positioning unit used for preventing the backing paper pile from deviating in the conveying process and a dust suction unit used for cleaning dust on the surface of backing paper are installed on the machine frame, and the dust suction unit corresponds to the transmission wheels. The upper portion of the backing paper pile is limited by the positioning plate, the problem that the backing paper pile shifts forwards and inclines and topples over in the moving process is solved, and the limiting roller rolls on the side face of the backing paper pile and does not affect the backing paper pile to move to the paper feeding table. The dust collection unit cleans dust and other impurities on the surface of the backing paper to avoid the influence on the follow-up attaching effect of the surface paper on the surface of the backing paper, and the finished product quality is improved.

Description

Technical Field

[0001] The invention relates to the field of paper laminating machines, and more particularly to a paper feeding mechanism used on a paper laminating machine. Background Art

[0002] In the production and processing of corrugated boxes, the laminating machine is a device that laminates the surface paper with patterns and the bottom paper made of corrugated cardboard together to enhance the appearance and durability of the corrugated boxes. The laminating machine is mainly composed of a paper feeding mechanism, a paper laminating mechanism and a paper pressing mechanism. The paper feeding mechanism feeds the surface paper and the bottom paper respectively, the laminating mechanism glues the bottom paper to bond the surface paper and the bottom paper together, and the surface paper and the bottom paper are pressed at the paper pressing mechanism so that the surface paper and the bottom paper can be laminated together to ensure their firmness. After laminating, the product is transported to the discharge of the laminating machine through the transportation mechanism to complete the entire processing flow of the laminating machine.

[0003] The invention patent with application number 202311300436.8 discloses a feeding mechanism for a paper laminating machine. By pre-stacking the cardboard to be replenished on each lifting seat, when the cardboard needs to be replenished on the placement table, the driving source will drive the support frame to slide to the side of the feed port of the conveying component, and then the lifting seat will lift the cardboard to a specified height under the drive of the driving source. When the height of the cardboard enters the pushing range of the pushing assembly, the pushing assembly can push the cardboard on the lifting seat onto the conveying assembly, thereby achieving the purpose of automatically replenishing the cardboard. In addition, by setting up multiple lifting seats, workers can pre-replenish multiple copies of cardboard at one time to ensure that there are sufficient cardboards to be replenished, thereby effectively reducing the downtime of the paper laminating machine, ensuring production efficiency, and meeting the needs of mass production in the factory. A longer time can be reserved for workers to freely arrange their work, which is more humane. The cardboard can be leveled under the action of the limit plates on both sides to ensure that the cardboard is neatly stacked; it can also prevent the cardboard from offsetting during the conveying process, thereby ensuring that the bottom layer of cardboard can be stably and accurately sent out from the gap between the grid frame and the placement table.

[0004] According to the above technical solution, the cardboards to be replenished are pre-stacked on each lifting seat in a cardboard pile state with a certain height and heavy weight. In the process of the pushing component pushing the cardboard pile into the conveying component, the pushing component needs to exert a large thrust due to the heavy weight of the cardboard pile, which can easily cause the cardboard pile to tip forward or deviate forward and tilt. Although the limiting plates on both sides prevent the cardboard pile from shifting, they can only prevent the cardboard pile from shifting left and right, but cannot prevent the cardboard pile from shifting, tilting or tipping forward. Moreover, when the limiting plates on both sides limit the two sides of the cardboard pile, if the limiting plates on both sides clamp the two sides of the cardboard pile, it will affect the pushing component to push the cardboard pile onto the conveying component. If the limiting plates on both sides do not contact the cardboard pile to clamp it, the limiting effect will be reduced, and the cardboard pile may deviate left and right.

[0005] The invention patent with application number 202111072973.2 discloses a face paper conveying mechanism of a paper laminating machine and the face paper laminating machine thereof. By adjusting the inclination angle between the face paper correction belt and the correction bracket in the face paper correction belt assembly, the conveying surface of the driven conveying part formed by multiple correction guide wheels is changed, and the conveying direction of the face paper correction belt assembly is tilted relative to the conveying direction of the conveying belt assembly. The conveying direction of the conveying surface is tilted relative to the conveying direction of the conveying belt assembly. The driven conveying part is gradually tilted inward along its conveying direction. The inclination direction of the face paper correction belt assembly is arranged opposite to the inclination direction of the driven conveying part, so that the face paper is conveyed in the conveying surface formed between the driven conveying part and the face paper correction belt assembly, so as to realize the correction effect of the face paper edge when conveying and pressing the face paper with the bottom paper. The face paper is transmitted to the face paper correction device through the face paper automatic feeding device and conveyed and corrected on the face paper correction belt assembly and the conveying belt assembly, thereby improving the effect of paper laminating production quality.

[0006] According to the above technical scheme, although the side paper is conveyed and straightened to achieve the correction effect, and the effect of completely flushing and matching the face paper with the bottom paper when conveying is improved, the dust and other impurities adhering to the surface of the bottom paper cannot be cleaned when the bottom paper is automatically fed. The dust adhering to the surface of the bottom paper may cause the face paper and the bottom paper to fit poorly, and problems such as bubbles and degumming may occur, which affect the subsequent bonding effect of the face paper on the cardboard surface and reduce the quality of the finished product. Summary of the invention

[0007] In view of the deficiencies in the prior art, an object of the present invention is to provide a paper feeding mechanism for a paper mounting machine.

[0008] To achieve the above object, the present invention provides the following technical solutions: A paper feeding mechanism for a paper mounting machine comprises a paper feeding platform corresponding to a paper feeding end of the paper mounting machine, a transmission wheel installed on the paper feeding platform for conveying bottom paper, and a frame installed on the paper feeding platform, wherein a loading unit for conveying a bottom paper pile to the paper feeding platform, a positioning unit for preventing the bottom paper pile from deviating during conveyance, and a dust collecting unit for cleaning dust on the surface of the bottom paper are installed on the frame, and the dust collecting unit corresponds to the transmission wheel.

[0009] The loading unit includes a paper placing seat, a pushing plate, a hydraulic cylinder and a first air cylinder. The frame includes a loading space corresponding to the paper feeding table. The hydraulic cylinder is installed in the loading space and connected to the paper placing seat. The output end of the first air cylinder is connected to the pushing plate, and the pushing plate corresponds to the bottom paper pile on the paper placing seat.

[0010] The positioning unit includes two limiting side plates and a pressing plate. The two limiting side plates are installed on both sides of the frame. The first cylinder is installed on the two limiting side plates. The two limiting side plates cooperate to form a paper feeding space corresponding to the loading space. The pressing plate is movably connected to the mounting frame and placed above the bottom paper pile. Both limiting side plates are movably connected with limiting rollers, and the limiting rollers roll on the side surface of the bottom paper pile.

[0011] The present invention is further configured such that the dust suction unit includes two dust suction parts respectively corresponding to the two limiting side plates, the dust suction part includes a dust suction pipe, a transfer pipe, a suction fan and a dust collecting box, one end of the dust suction pipe is passed through the corresponding limiting side plate, and the pipe mouth at one end of the dust suction pipe is connected with the paper feeding space and corresponds to the transmission wheel, the other end of the dust suction pipe is connected with the transfer pipe, the air suction port of the suction fan is connected with the transfer pipe, and the air exhaust port of the suction fan is connected with the dust collecting box, the dust collecting box is provided with an air outlet, and a filter is installed on the air outlet.

[0012] The present invention is further configured such that the positioning unit also includes two power parts corresponding to the two limiting side plates respectively and a chassis for protecting the power parts, one end of the dust suction pipe passes through the chassis and the limiting side plates and is connected to the paper feeding space, the chassis includes a chassis door, and the power parts are respectively connected to the limiting rollers on the corresponding limiting side plates, so that the power parts drive the limiting rollers on the corresponding limiting side plates to move and limit the two sides of the bottom paper pile.

[0013] The present invention is further configured that the limiting rollers on the limiting side plate are provided with a plurality of limiting rollers, and the plurality of limiting rollers are divided into two groups. The power member includes two connecting frames for respectively installing the two groups of limiting rollers, two first racks installed on one connecting frame, two second racks installed on the other connecting frame, two first gears respectively meshed with the two first racks, two second gears respectively meshed with the two second racks, and two servo motors installed on the mounting frame. The two groups of limiting rollers are rotatably connected to the two connecting frames respectively, one connecting frame includes two first guide plates, and the other connecting frame includes two second guide plates, the two first racks are respectively installed on the two first guide plates, the two second racks are respectively installed on the two second guide plates, the two first gears are meshed, and the two second gears are meshed. The output end of a servo motor is meshed with a first gear, and the output end of another servo motor is meshed with a second gear. A mounting plate placed between two connecting frames is installed in the chassis. Another first gear and another second gear are both rotatably connected to the mounting plate. Two first guide channels corresponding to the two first guide plates are opened on the limiting side plate, and two second guide channels corresponding to the two second guide plates are opened on the limiting side plate. The first guide plate and the first rack thereon move in the first guide channel, and the second guide plate and the second rack thereon move in the second guide channel. A first slide rail is installed in the first guide channel to facilitate the sliding of the first guide plate, and a second slide rail is installed in the second guide channel to facilitate the sliding of the second guide plate.

[0014] The present invention is further configured as follows: a fixed plate is provided on the frame, two ends of the fixed plate are respectively mounted on two limiting side plates, the first cylinder is mounted on the fixed plate, the fixed plate includes a movable hole corresponding to the first cylinder, the output end of the first cylinder passes through the movable hole and is connected to the push plate, and the output end of the first cylinder moves in the movable hole.

[0015] The present invention is further configured such that a conveying roller is rotatably connected to the paper placement seat, the bottom paper pile is placed on the conveying roller, a mounting groove is provided on the paper placement seat, a plurality of conveying rollers are provided, the plurality of conveying rollers are evenly arranged and rotatably connected in the mounting groove, the outer peripheral top end surface of the conveying roller extends out of the mounting groove, and the bottom edge of the push plate corresponds to the outer peripheral top end surface of the conveying roller.

[0016] The present invention is further configured such that the positioning unit also includes a mounting frame and a second cylinder, the two ends of the mounting frame are respectively mounted on both sides of the frame, the second cylinder is mounted on the mounting frame, and the output end of the second cylinder is connected to the pressing plate, and the pressing plate corresponds to the loading space and the paper feeding space.

[0017] The present invention is further configured such that a receiving groove is formed on the pressing plate, a roller is rotatably connected in the receiving groove, and an outer peripheral top end surface of the roller extends out of the receiving groove.

[0018] The present invention is further configured such that an extension rod is provided on the push plate, and a screw hole threadedly connected to the extension rod is opened on the push plate.

[0019] The present invention is further configured such that a fixing frame is installed on the filter screen, and the fixing frame is clamped on the air outlet.

[0020] By adopting the above technical solution, the beneficial effects of the present invention are: 1. The limiting rollers on the two limiting side plates can prevent the bottom paper pile from shifting left and right, and the positioning plate prevents the bottom paper pile from shifting forward, tilting, or tipping over during the process of conveying the bottom paper pile to the paper feeding table. The limiting rollers on the two limiting side plates clamp the bottom paper pile from both sides and roll on the surfaces of both sides of the bottom paper pile during the movement of the bottom paper pile. When the limiting rollers on the two limiting side plates limit the two sides of the bottom paper pile, the limiting effect is guaranteed to avoid the problem of the bottom paper pile shifting left and right during the movement, and it will not affect the push plate to push the bottom paper pile to the paper feeding table.

[0021] 2. When the transmission wheel conveys the bottom paper to the paper feeding end of the paper laminating machine, the suction fan generates suction to the paper feeding space through the dust suction pipe. In the process of conveying the bottom paper, the dust suction pipe sucks the dust on the surface of the bottom paper into the dust collecting box, so as to clean the dust and other impurities adhering to the surface of the bottom paper, avoid affecting the laminating effect of the subsequent surface paper on the surface of the bottom paper, and improve the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0023] Figure 2 It is a structural diagram of the cooperation between the power part and the limiting side plate.

[0024] Figure 3 It is a schematic diagram of the structure that two servo motors cooperate with the first gear and the second gear respectively.

[0025] Figure 4 It is a structural schematic diagram of the cooperation between the first cylinder and the fixed plate.

[0026] Figure 5 It is a schematic diagram of the structure of the cooperation between the pressing plate and the roller.

[0027] Figure 6 It is a structural diagram of the cooperation between the filter and the dust box.

[0028] In the figure: paper feeding table 1, transmission wheel 2, frame 3, paper placing seat 4, push plate 5, hydraulic cylinder 6, first cylinder 7, feeding space 301, limiting side plate 8, pressing plate 9, paper feeding space 302, limiting roller 10, dust suction part 11, dust suction pipe 111, transfer pipe 112, suction fan 113, dust collecting box 114, air outlet 115, filter 116, power part 12, chassis 13, box door 131, connecting frame 121, first rack 122, second rack 123, The first gear 124, the second gear 125, the servo motor 126, the first guide plate 127, the second guide plate 128, the mounting plate 132, the first guide channel 801, the second guide channel 802, the first slide rail 803, the second slide rail 804, the fixed plate 14, the movable hole 141, the conveying roller 15, the mounting groove 401, the mounting frame 16, the second cylinder 17, the accommodating groove 901, the roller 902, the extension rod 501, the screw hole 502, and the fixed frame 1161. DETAILED DESCRIPTION

[0029] Reference Figures 1 to 6 The embodiments of the present invention are further described.

[0030] A paper feeding mechanism for a paper mounting machine comprises a paper feeding platform 1 corresponding to a paper feeding end of the paper mounting machine, a transmission wheel 2 installed on the paper feeding platform 1 for transmitting bottom paper, and a frame 3 installed on the paper feeding platform 1. The transmission wheel 2 rotates toward the paper feeding end of the paper mounting machine under the drive of an external motor, so that the bottom paper at the bottom layer of a bottom paper pile on the paper feeding platform 1 can be transmitted to the paper mounting machine under the drive of the transmission wheel 2. A loading unit for transmitting the bottom paper pile to the paper feeding platform 1, a positioning unit for preventing the bottom paper pile from shifting during the transmission process, and a dust collecting unit for cleaning dust on the surface of the bottom paper are installed on the frame 3.

[0031] The loading unit includes a paper placing seat 4, a pushing plate 5, a hydraulic cylinder 6 and a first air cylinder 7. The frame 3 includes a loading space 301 corresponding to the paper feeding table 1. The hydraulic cylinder 6 is installed in the loading space 301 and connected to the paper placing seat 4. The output end of the first air cylinder 7 is connected to the pushing plate 5, and the pushing plate 5 corresponds to the bottom paper pile on the paper placing seat 4.

[0032] The positioning unit includes two limiting side plates 8 and a pressing plate 9. The two limiting side plates 8 are installed on both sides of the frame 3. The first cylinder 7 is installed on the two limiting side plates 8. The two limiting side plates 8 cooperate to form a paper feeding space 302 corresponding to the loading space 301, and the paper feeding space 302 corresponds to the paper feeding platform 1. The pressing plate 9 is movably connected to the mounting frame 16 and placed above the bottom paper pile. The two limiting side plates 8 are movably connected to the limiting rollers 10, and the limiting rollers 10 roll on the side surface of the bottom paper pile.

[0033] The dust suction unit includes two dust suction parts 11 corresponding to the two limiting side plates 8 respectively. The dust suction part 11 includes a dust suction pipe 111, a transfer pipe 112, a suction fan 113 and a dust collecting box 114. The dust suction pipe 111 is provided with a number of so as to expand the dust suction range and improve the cleaning effect. One end of the dust suction pipe 111 is penetrated on the corresponding limiting side plate 8, and the pipe mouth at one end of the dust suction pipe 111 is connected with the paper feeding space 302 and corresponds to the transmission wheel 2. The other end of the dust suction pipe 111 is connected with the transfer pipe 112 through a pipeline, and the air suction port of the suction fan 113 is also connected with the transfer pipe 112 through a pipeline, and the air outlet of the suction fan 113 is also connected with the dust collecting box 114 through a pipeline. An air outlet 115 is opened on the dust collecting box 114, and a filter 116 is installed on the air outlet 115.

[0034] When in use, the bottom paper pile is placed on the paper placing seat 4, the hydraulic cylinder 6 works to drive the paper placing seat 4 to rise so that the upper surface of the paper placing seat 4 corresponds to the lowermost end of the pushing plate 5, and the lowermost edge of the pushing plate 5 corresponds to the bottom paper of the bottom paper pile, the first cylinder 7 works to drive the pushing plate 5 to move toward the bottom paper pile until it contacts the bottom paper pile, as the first cylinder 7 continues to work, the pushing plate 5 pushes the bottom paper pile on the paper placing seat 4 to move onto the paper feeding platform 1, and the bottom paper pile is transmitted to the paper mounting machine under the action of the transmission wheel 2, then, the pushing plate 5 moves away from the bottom paper pile and returns to its original position under the action of the first cylinder 7, the hydraulic cylinder 6 works to make the paper placing seat 4 descend for the convenience of the worker to place the next bottom paper pile, repeat the above operation, realize the continuous loading of the bottom paper, facilitate the continuous operation of the paper mounting machine, do not need to stop the machine for loading, and improve the production efficiency.

[0035] During the movement of the bottom paper pile toward the paper feeding platform 1, the position of the positioning plate is adjusted to make it contact with the uppermost bottom paper of the bottom paper pile to limit the upper part of the bottom paper pile, so as to prevent the upper bottom paper of the bottom paper pile from easily deviating forward and tipping over during the movement. The limiting rollers 10 on the two limiting side plates 8 are moved to limit the two sides of the bottom paper pile, so that the limiting rollers 10 on the two limiting side plates 8 can prevent the bottom paper pile from deviating left and right. The limiting rollers 10 on the two limiting side plates 8 are cooperated to clamp the bottom paper pile from both sides of the bottom paper pile and roll on the surfaces of both sides of the bottom paper pile during the movement of the bottom paper pile, so that when the limiting rollers 10 on the two limiting side plates 8 limit the two sides of the bottom paper pile, the limiting effect is guaranteed to avoid the problem of left and right deviation of the bottom paper pile during the movement, and at the same time, it will not affect the pushing plate 5 to push the bottom paper pile to move onto the paper feeding platform 1.

[0036] In the process of the driving wheel 2 conveying the bottom paper to the paper feeding end of the paper laminating machine, the suction fan 113 works to generate suction to the paper feeding space 302 through the dust suction pipe 111, so that in the process of the driving wheel 2 conveying the bottom paper of the bottom paper pile to the paper laminating machine, the bottom paper of the bottom paper pile is removed from the bottom paper pile, and the dust suction pipe 111 sucks the dust on the surface of the bottom paper into the dust collecting box 114 under the action of the suction fan 113, so as to achieve the purpose of cleaning the dust and other impurities adhered to the surface of the bottom paper, avoid affecting the laminating effect of the subsequent face paper on the surface of the bottom paper, and improve the quality of the finished product, the air outlet 115 prevents the excessive pressure in the dust collecting box 114 from affecting the normal cleaning of the dust, and the filter 116 prevents the dust entering the dust collecting box 114 from directly flying out from the air outlet 115 to pollute the working environment.

[0037] The positioning unit also includes two power parts 12 corresponding to the two limiting side plates 8 respectively and a chassis 13 for protecting the power parts 12. One end of the dust suction pipe 111 passes through the chassis 13 and the limiting side plate 8 and is connected to the paper feeding space 302. The chassis 13 includes a door 131, which is convenient for opening the door 131 to perform regular maintenance on the power parts 12 in the chassis 13. The power parts 12 are respectively connected to the limiting rollers 10 on the corresponding limiting side plates 8, so that the power parts 12 can drive the limiting rollers 10 on the corresponding limiting side plates 8 to move to limit the two sides of the bottom paper pile.

[0038] The limiting rollers 10 on the limiting side plate 8 are provided with a plurality of limiting rollers 10, each of which is divided into two groups. The power member 12 includes two connecting frames 121 for mounting the two groups of limiting rollers 10, two first racks 122 mounted on one connecting frame 121, two second racks 123 mounted on the other connecting frame 121, two first gears 124 respectively meshed with the two first racks 122, two second gears 125 respectively meshed with the two second racks 123, and two servo motors 16 mounted on the mounting frame 16. 26, two groups of limiting rollers 10 are rotatably connected to two connecting frames 121, one connecting frame 121 includes two first guide plates 127, the other connecting frame 121 includes two second guide plates 128, two first racks 122 are respectively mounted on the two first guide plates 127, two second racks 123 are respectively mounted on the two second guide plates 128, two first gears 124 are meshed, two second gears 125 are meshed, an output end of a servo motor 126 is meshed with a first gear 124, and another The output end of the servo motor 126 meshes with a second gear 125. A mounting plate 132 is installed in the chassis 13 and is placed between the two connecting frames 121. The other first gear 124 and the other second gear 125 are both rotatably connected to the mounting plate 132. The gear shaft of the other first gear 124 and the gear shaft of the other second gear 125 are respectively rotatably connected to the mounting plate 132 through two bearings. The limiting side plate 8 is provided with two first guide channels 801 corresponding to the two first guide plates 127, respectively. Two second guide channels 802 corresponding to the two second guide plates 128 are opened on the side plate 8. The first guide plate 127 and the first rack 122 thereon move in the first guide channel 801, and the second guide plate 128 and the second rack 123 thereon move in the second guide channel 802. A first slide rail 803 is installed in the first guide channel 801 to facilitate the sliding of the first guide plate 127, and a second slide rail 804 is installed in the second guide channel 802 to facilitate the sliding of the second guide plate 128.

[0039] A servo motor 126 drives the first gear 124 to rotate, thereby rotating another first gear 124 and a corresponding first rack 122. The rotation of the other first gear 124 drives the other first rack 122 to rotate, and the two first guide plates 127 connected to the two first racks 122 move accordingly, and then a connecting frame 121 connected to the two first guide plates 127 moves to drive a group of limiting rollers 10 on the connecting frame 121 to move, so that the limiting rollers 10 on the connecting frame 121 limit the side of the bottom paper pile when the bottom paper pile moves to the paper feeding table 1, so as to prevent the bottom paper pile on the paper placing seat 4 from pushing the material. When the plate 5 moves toward the paper feeding platform 1 under the action of the plate 5, the two sides are offset. At the same time, another servo motor 126 works to drive the second gear 125 to rotate, so that another second gear 125 rotates. The two second gears 125 rotate to drive the two second guide plates 128 to move, and then another connecting frame 121 connected to the second guide plate 128 moves and drives another group of limiting rollers 10 thereon to move, so that another group of limiting rollers 10 limits the bottom paper pile moved to the paper feeding platform 1, so that when the bottom layer of the bottom paper pile is transmitted through the transmission wheel 2, the bottom paper pile remains stable and will not deviate, so that the bottom paper can be accurately transmitted, which is conducive to the precise fitting of the subsequent surface paper and the bottom paper.

[0040] Each limiting roller 10 of the limiting roller 10 group is rotatably connected to the corresponding connecting frame 121, so that the limiting roller 10 can limit the left and right sides of the bottom paper pile. When the bottom paper pile moves, the limiting roller 10 rolls on the side of the bottom paper pile without affecting the movement of the bottom paper pile. According to the size of the bottom paper pile, the servo controller controls the number of revolutions of the servo motor 126 to control the moving distance of the corresponding connecting frame 121, thereby adjusting the moving distance of the limiting roller 10 so that the limiting roller 10 can limit bottom paper piles of different sizes.

[0041] When it is necessary to place the next bottom paper pile on the paper placing seat 4, the push plate 5 moves away from the bottom paper pile and returns to its original position under the action of the first cylinder 7, and the hydraulic cylinder 6 works to make the paper placing seat 4 descend to facilitate the worker to place the next bottom paper pile. At the same time, a servo controller controls a servo motor 126 to rotate in the opposite direction to make a group of limiting rollers 10 corresponding to the loading space 301 on a connecting frame 121 move toward the corresponding limiting side plate 8 to avoid affecting the lifting of the next bottom paper pile placed on the paper placing seat 4. The next bottom paper pile is lifted to the same height as the previous bottom paper pile and corresponds to the push plate 5. At this time, a servo motor The machine 126 rotates in the positive direction to make the limit roller 10 group corresponding to the feeding space 301 move toward the bottom paper pile to limit the side of the bottom paper pile, and the pressing plate 9 limits the top of the bottom paper pile to prevent the next bottom paper pile from deviating during the movement toward the paper feeding platform 1. Since the next bottom paper pile and the previous bottom paper pile are of the same size, during the movement of the next bottom paper pile toward the paper feeding platform 1, the limit roller 10 group on the other connecting frame 121 rolls on the side of the bottom paper pile, which will not affect the movement of the next bottom paper pile, and finally realizes continuous feeding of the bottom paper pile without stopping for loading, thereby improving production efficiency.

[0042] A fixing plate 14 is provided on the frame 3, and both ends of the fixing plate 14 are respectively mounted on the two limiting side plates 8, and the first cylinder 7 is mounted on the fixing plate 14. The fixing plate 14 includes a movable hole 141 corresponding to the first cylinder 7, and the output end of the first cylinder 7 passes through the movable hole 141 to be connected with the push plate 5, and the output end of the first cylinder 7 moves in the movable hole 141. The installation of the first cylinder 7 on the two limiting side plates 8 is realized through the fixing plate 14, and the push plate 5 will not affect the lifting and lowering of the bottom paper pile on the paper placing seat 4.

[0043] A conveying roller 15 is rotatably connected to the paper placing seat 4, and the bottom paper pile is placed on the conveying roller 15. A mounting groove 401 is opened on the paper placing seat 4, and a plurality of conveying rollers 15 are provided. The plurality of conveying rollers 15 are evenly arranged and rotatably connected in the mounting groove 401. The outer peripheral top end surface of the conveying roller 15 extends out of the mounting groove 401, and the bottom edge of the push plate 5 corresponds to the outer peripheral top end surface of the conveying roller 15. When the paper placing seat 4 is raised until the outer peripheral top end surface of the conveying roller 15 is flush with the bottom edge of the pushing plate 5, the arrangement of the conveying roller 15 makes it easier for the pushing plate 5 to push the bottom paper pile into the paper feeding platform 1, and in the process of the pushing plate 5 pushing the bottom paper pile under the action of the first cylinder 7, the bottom edge of the pushing plate 5 will not conflict with the outer peripheral top end surface of the conveying roller 15 to avoid affecting the pushing of the bottom paper pile by the pushing plate 5.

[0044] The positioning unit also includes a mounting frame 16 and a second cylinder 17, the two ends of the mounting frame 16 are respectively mounted on both sides of the frame 3, the second cylinder 17 is mounted on the mounting frame 16, and the output end of the second cylinder 17 is connected to the pressing plate 9, and the pressing plate 9 corresponds to the loading space 301 and the paper feeding space 302, the pressing plate 9 limits the top layer of the bottom paper in the bottom paper pile, and the second cylinder 17 controls the descending distance of the pressing plate 9 so that the pressing plate 9 can limit the bottom paper piles of different heights, the pressing plate 9 corresponds to the loading space 301 and the paper feeding space 302, so that the pressing plate 9 always keeps the bottom paper pile limited during the movement of the bottom paper pile to the paper feeding platform 1, and further prevents the bottom paper pile from shifting during the movement.

[0045] The pressing plate 9 is provided with a receiving groove 901, in which a roller 902 is rotatably connected. The roller 902 is rotatably connected to the inner wall of the receiving groove 901 through a bearing, and the outer peripheral top end surface of the roller 902 extends out of the receiving groove 901, so that when the bottom paper pile moves toward the paper feeding platform 1, the roller 902 on the pressing plate 9 rolls on the surface of the topmost bottom paper of the bottom paper pile, so that the pressing plate 9 keeps limiting the upper part of the bottom paper pile without affecting the movement of the bottom paper pile, which is conducive to the smooth movement of the bottom paper pile toward the paper feeding platform 1.

[0046] An extension rod 501 is provided on the push plate 5. A screw hole 502 threadedly connected to the extension rod 501 is opened on the push plate 5. The extension rod 501 is extended by rotating the extension rod 501, so that the pushing range of the push plate 5 can be extended according to the height of the bottom paper pile, thereby improving practicality.

[0047] A fixing frame 1161 is installed on the filter 116, and the fixing frame 1161 is snapped onto the air outlet 115. After the dust box 114 is used for a long time, the dust entering the dust box 114 adheres to the filter 116, and the filter 116 needs to be cleaned regularly. The filter 116 is snapped onto the air outlet 115 through the fixing frame 1161, which facilitates the removal of the filter 116 from the dust box 114 for regular cleaning.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A paper feeding mechanism for a paper mounting machine, comprising a paper feeding platform (1) corresponding to a paper feeding end of the paper mounting machine, a transmission wheel (2) mounted on the paper feeding platform (1) for conveying a bottom paper, and a frame (3) mounted on the paper feeding platform (1), characterized in that: The frame (3) is equipped with a loading unit for conveying a bottom paper pile to the paper feeding platform (1), a positioning unit for preventing the bottom paper pile from shifting during conveying, and a dust collecting unit for cleaning dust on the surface of the bottom paper, and the dust collecting unit corresponds to the driving wheel (2); The loading unit comprises a paper placing seat (4), a pushing plate (5), a hydraulic cylinder (6) and a first air cylinder (7); the frame (3) comprises a loading space (301) corresponding to the paper feeding platform (1); the hydraulic cylinder (6) is installed in the loading space (301) and connected to the paper placing seat (4); the output end of the first air cylinder (7) is connected to the pushing plate (5); and the pushing plate (5) corresponds to the bottom paper pile on the paper placing seat (4); The positioning unit comprises two limiting side plates (8) and a pressing plate (9), the two limiting side plates (8) being mounted on both sides of the frame (3), the first cylinder (7) being mounted on the two limiting side plates (8), the two limiting side plates (8) cooperating to form a paper feeding space (302) corresponding to the feeding space (301), the pressing plate (9) being movably connected to the mounting frame (16) and placed above the bottom paper pile, the two limiting side plates (8) being movably connected to limiting rollers (10), and the limiting rollers (10) rolling on the side surface of the bottom paper pile.

2. A paper feeding mechanism for a paper laminating machine according to claim 1, characterized in that: The dust suction unit comprises two dust suction parts (11) respectively corresponding to the two limiting side plates (8); the dust suction part (11) comprises a dust suction pipe (111), a transfer pipe (112), a suction fan (113) and a dust collection box (114); one end of the dust suction pipe (111) is passed through the corresponding limiting side plate (8); a pipe opening at one end of the dust suction pipe (111) is connected to the paper feeding space (302) and corresponds to the transmission wheel (2); the other end of the dust suction pipe (111) is connected to the transfer pipe (112); the air suction port of the suction fan (113) is connected to the transfer pipe (112); the air exhaust port of the suction fan (113) is connected to the dust collection box (114); an air outlet (115) is provided on the dust collection box (114); and a filter screen (116) is installed on the air outlet (115).

3. A paper feeding mechanism for a paper laminating machine according to claim 2, characterized in that: The positioning unit further comprises two power members (12) respectively corresponding to the two limiting side plates (8) and a chassis (13) for protecting the power members (12); one end of the dust suction pipe (111) passes through the chassis (13) and the limiting side plates (8) to communicate with the paper feeding space (302); the chassis (13) comprises a chassis door (131); the power members (12) are respectively connected to the limiting rollers (10) on the corresponding limiting side plates (8), so that the power members (12) drive the limiting rollers (10) on the corresponding limiting side plates (8) to move and limit the two sides of the bottom paper pile.

4. A paper feeding mechanism for a paper laminating machine according to claim 3, characterized in that: The limiting side plate (8) is provided with a plurality of limiting rollers (10), each of which is divided into two groups. The power member (12) comprises two connecting frames (121) for mounting the two groups of limiting rollers (10), two first racks (122) mounted on one connecting frame (121), two second racks (123) mounted on the other connecting frame (121), two first gears (124) respectively meshed with the two first racks (122), two second gears (125) respectively meshed with the two second racks (123), and two servo motors (126) mounted on the mounting frame (16). The two groups of limiting rollers (10) are rotatably connected to the two connecting frames (121), and one connecting frame (121) comprises two first guide gears (124) and two servo motors (126) respectively meshed with the two first racks (122). The connecting frame (121) includes two second guide plates (128), two first racks (122) are respectively mounted on the two first guide plates (127), two second racks (123) are respectively mounted on the two second guide plates (128), two first gears (124) are meshed, two second gears (125) are meshed, an output end of a servo motor (126) is meshed with a first gear (124), and an output end of another servo motor (126) is meshed with a second gear (125), a mounting plate (132) disposed between the two connecting frames (121) is mounted in the chassis (13), another first gear (124) and another second gear (125) are both rotatably connected to the mounting plate (132), The limiting side plate (8) is provided with two first guide channels (801) corresponding to the two first guide plates (127) respectively, and the limiting side plate (8) is provided with two second guide channels (802) corresponding to the two second guide plates (128) respectively. The first guide plate (127) and the first rack (122) thereon move in the first guide channel (801), and the second guide plate (128) and the second rack (123) thereon move in the second guide channel (802). A first slide rail (803) is installed in the first guide channel (801) to facilitate the sliding of the first guide plate (127), and a second slide rail (804) is installed in the second guide channel (802) to facilitate the sliding of the second guide plate (128).

5. A paper feeding mechanism for a paper laminating machine according to claim 4, characterized in that: The frame (3) is provided with a fixing plate (14), the two ends of the fixing plate (14) are respectively mounted on the two limiting side plates (8), the first cylinder (7) is mounted on the fixing plate (14), the fixing plate (14) comprises a movable hole (141) corresponding to the first cylinder (7), the output end of the first cylinder (7) passes through the movable hole (141) to be connected to the push plate (5), and the output end of the first cylinder (7) moves in the movable hole (141).

6. A paper feeding mechanism for a paper laminating machine according to claim 5, characterized in that: The paper placing seat (4) is rotatably connected to a conveying roller (15), and the bottom paper pile is placed on the conveying roller (15). The paper placing seat (4) is provided with a mounting groove (401), and a plurality of conveying rollers (15) are provided. The plurality of conveying rollers (15) are evenly arranged and rotatably connected in the mounting groove (401), and the outer peripheral top end surface of the conveying roller (15) extends out of the mounting groove (401), and the bottom edge of the push plate (5) corresponds to the outer peripheral top end surface of the conveying roller (15).

7. A paper feeding mechanism for a paper laminating machine according to claim 6, characterized in that: The positioning unit further comprises a mounting frame (16) and a second cylinder (17), wherein two ends of the mounting frame (16) are respectively mounted on two sides of the frame (3), the second cylinder (17) is mounted on the mounting frame (16), and an output end of the second cylinder (17) is connected to a pressing plate (9), and the pressing plate (9) corresponds to the loading space (301) and the paper feeding space (302).

8. The paper feeding mechanism for a paper laminating machine according to claim 7, characterized in that: The pressing plate (9) is provided with a receiving groove (901), a roller (902) is rotatably connected in the receiving groove (901), and the outer peripheral top end surface of the roller (902) extends out of the receiving groove (901).

9. A paper feeding mechanism for a paper laminating machine according to claim 8, characterized in that: The push plate (5) is provided with an extension rod (501), and the push plate (5) is provided with a screw hole (502) threadedly connected to the extension rod (501).

10. A paper feeding mechanism for a paper laminating machine according to claim 9, characterized in that: A fixing frame (1161) is installed on the filter screen (116), and the fixing frame (1161) is snap-connected to the air outlet (115).

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