A paper calibrating and aligning machine

Abstract

The application discloses a paper calibrating and aligning paper mounting machine and relates to the technical field of thin plate conveying and feeding, which comprises a conveyor, a feeding table and a feeding assembly. The feeding table lifts the required aligned and integrated plate to the lower side of the feeding assembly. The feeding assembly picks up the plate on the feeding table and places the two plates on the conveyor after aligning and stacking at one end. The feeding assembly comprises a feeding module which crosses the conveyor and the feeding table. A loading plate is installed on the feeding slider of the feeding module. A plurality of suction nozzles are installed on the loading plate. The edge of the suction nozzle suction end is provided with an air chamber. The suction nozzle is in communication with the input end of a negative pressure system. The air chamber is in communication with the output end of the negative pressure system. The negative pressure system fills the air chamber through the output end, so that the air chamber expands between the sleeve and the plate. The uneven surface or recessed surface caused by the processing technology, the corrugated structure and the external object is adapted, so that there is no air leakage point between the suction nozzle and the plate. When the plate is adsorbed by the suction nozzle, the plate will not fall off.

Description

Technical Field

[0001] This invention relates to the field of thin plate handling and feeding technology, specifically a paper mounting machine for aligning and calibrating the face paper. Background Technology

[0002] A laminating machine is the core equipment for bonding two sheets of cardboard together. It is widely used in industries such as packaging and printing, and its working efficiency and processing precision directly determine the quality of the finished paper products. Currently, the feeding mechanism of laminating machines generally adopts negative pressure adsorption to grip and transport single sheets of cardboard. This method has become the mainstream feeding technology solution due to its advantages of stable adsorption and minimal damage to the cardboard surface.

[0003] However, in actual operation, the feeding mechanism still has some technical defects, making it difficult to meet the current diversified production needs. Specifically, with the diversification of paper processing requirements, cardboard structures exhibit diverse characteristics, encompassing various types such as flat cardboard, corrugated cardboard, and embossed cardboard. The suction nozzles of the feeding mechanism are mostly fixed structures, unable to adapt to the unevenness of different cardboard surfaces. When adsorbing cardboard with uneven surfaces, the suction nozzle cannot achieve full contact with the cardboard surface, resulting in uneven distribution of negative pressure adsorption force, leading to weak adsorption and cardboard slippage in some areas. Summary of the Invention

[0004] The purpose of this invention is to provide a laminating machine for aligning and calibrating the face paper, so as to solve the problem in the prior art that the suction nozzle cannot adapt to the unevenness of the surface of various cardboards.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mounting machine for aligning and calibrating face paper, comprising a conveyor, at least two loading platforms and a negative pressure system, wherein the loading platforms are located at the input end of the conveyor, the plates to be integrated are placed on the loading platforms, and the machine also includes a loading assembly;

[0006] The feeding assembly includes a feeding module spanning the conveyor and the feeding platform. A lifting component is installed on the feeding slider of the feeding module. A carrier plate is installed at one end of the lifting component, and several suction nozzles are installed on the carrier plate.

[0007] The suction nozzle includes a tube body, which is connected to the input end of the negative pressure system. An opening and closing mechanism is provided in the tube body, which is used to close or open the internal channel of the tube body.

[0008] The tube body has a soft layer at the adsorption end, and an air chamber is provided at the edge of the soft layer. The air chamber is connected to the output end of the negative pressure system. After the air chamber is filled with air, the edge of the soft layer expands.

[0009] The negative pressure system consists of two input and output ends, each composed of pipes. Valves are connected in series in each pipe. One input end is connected to the suction nozzle, and the other input end is connected to the filter screen. One output end is connected to the air chamber, and the other output end is used for exhaust.

[0010] When picking up a panel, the loading module moves the lifting component and the carrier plate above the panel. The lifting component lowers the height of the carrier plate so that the suction nozzle can contact and adhere to the panel. The negative pressure system draws in external air through the input end connected to the filter screen and then inflates the air chamber through the output end, causing the air chamber to expand between the kit and the panel. This expansion accommodates the uneven or recessed surfaces of the panel caused by processing technology, corrugated structure, or handling / external pressure, ensuring there are no air leaks between the suction nozzle and the panel, preventing the panel from falling off when it is suctioned. After the negative pressure system inflates the air chamber for a certain period, it begins to draw air from the suction nozzle, allowing the panel to be picked up by negative pressure. Then, the lifting component raises the carrier plate, and the loading module transfers the panel above the conveyor. Through feedback from the feedback component and control system regulation, the two panels are aligned, stacked at one end, and placed on the conveyor.

[0011] The tube body connects to the input end of the negative pressure system via air holes on the carrier plate. A through-slot is provided at one of the flared ends of the tube body, and a kit is installed inside this end. The soft layer is placed on the kit, and through holes are provided on both the kit and the air chamber at positions corresponding to the through-slot. The tube body is mounted on the carrier plate, and the negative pressure system draws air from the tube body through the pipes and air holes, and inflates the air chamber through the pipes, through-slot, and through holes. The kit is threaded onto the tube body, and the soft layer contacts the plate to prevent puncture during pickup. When the soft layer needs replacement, the kit is unscrewed from the tube body, and a new soft layer is installed. The kit design makes nozzle replacement more convenient, requiring only partial structural changes and reducing replacement costs.

[0012] The straight section of the tube extends outward to form an opening and closing cavity. A flat key is provided on the inner wall of the opening and closing cavity. The opening and closing mechanism includes a mesh plate and a plunger plate disposed within the cavity. The plunger plate slides in contact with the flat key and the inner wall of the cavity. The plunger plate is provided with a plug to seal the mesh openings and an air vent. Multiple bent piezoelectric plates are disposed between the plunger plate and the cavity. The piezoelectric plates are connected to the control system via wires. Before the negative pressure system extracts air from the nozzle, the control system energizes the piezoelectric plates via wires, causing the piezoelectric plates to bend further while simultaneously lifting the plunger plate. This causes the plug to detach from the mesh openings of the mesh plate, generating negative pressure at the trumpet-shaped end and attracting the plate. When the negative pressure reaches the set value, the pressure values ​​on both sides of the piezoelectric plate and the mesh plate are the same. The control system introduces a reverse current into the piezoelectric plate, causing the piezoelectric plate to return to its original shape and the plunger plate to insert the plunger into the mesh, forming a sealed negative pressure cavity inside the horn-shaped end. At this time, even if the negative pressure system fails, the plate will not fall off due to the loss of pressure in the suction nozzle. Moreover, when the negative pressure system is in normal use, the mesh plate and the plunger plate separate the internal space of the suction nozzle. When the suction nozzle releases the negative pressure adsorption on the plate, only the horn-shaped end of the suction nozzle releases the negative pressure. This not only enables the rapid unloading of the plate, but also maintains negative pressure in the opening and closing cavity and in the pipeline connected to the negative pressure system, shortening the time for the next negative pressure adsorption and increasing the adsorption and feeding speed.

[0013] The tube body is fitted with a sleeve, the inner diameter of the open end of the sleeve is equal to the outer diameter of the trumpet-shaped end of the tube body, the sleeve and the trumpet-shaped end of the tube body cooperate to form a positive pressure cavity, and the output end of the negative pressure system is connected to the positive pressure cavity through a pipe with a valve connected in series.

[0014] The tube body has several pressure relief ports and insertion holes circumferentially arranged at one end of its flared shape. There is a pressure relief port between every two insertion holes. A push rod is slidably installed in each insertion hole. One end of the push rod is provided with a smooth curved surface. Two push rods are connected to a sealing plate that closes the pressure relief port. A spring is installed between the sealing plate and the housing through a pin (the pin and spring are not shown in the figure).

[0015] The tube body has a rod hole between the opening / closing chamber and the insertion hole, connecting the two. A guide rod is slidably installed inside the rod hole, with one end of the guide rod passing through the mesh plate and connecting to the plunger plate. The negative pressure system fills the positive pressure chamber with air through the pipeline, causing the air chamber to expand and the air pressure in the positive pressure chamber to increase. When the air pressure reaches the set value, the valve closes the pipeline, maintaining pressure in the positive pressure chamber. When the feeding module places the plate on the conveyor and it is necessary to release the negative pressure of the suction nozzle, the control system increases the reverse current flowing into the piezoelectric plate, causing the piezoelectric plate to gradually flatten. During this process, the piezoelectric plate presses the plunger plate downward, causing the plunger plate to push the guide rod towards the push rod. One end of the guide rod contacts the smooth curved surface of the push rod and pushes the push rod into the positive pressure chamber, separating the sealing plate from the pressure relief port. Air in the positive pressure chamber and the air chamber quickly enters the interior of the horn-shaped end of the suction nozzle through the pressure relief port, rapidly releasing the negative pressure inside the horn-shaped end of the suction nozzle. After the plate is placed on the conveyor, during the resetting process of the loading cylinder carrying the carrier plate, the control system supplies a positive current to the piezoelectric plate, causing the piezoelectric plate to return to its original state. This causes the plunger plate to return to the state of only blocking the mesh plate under the action of the piezoelectric plate. The push rod is then reset under the push of the spring, causing the sealing plate to seal the pressure relief port again.

[0016] The flexible layer is fitted onto the kit. When the kit is installed on the tube body, the flexible layer is compressed by the tube body and the sleeve at the outer edge of the kit. The two ends of the flexible layer are rolled up and wrapped around the outside of the kit. To replace the flexible layer, simply remove it from the kit; it does not need to be replaced along with the kit. After replacing the flexible layer, screw the kit back onto the tube body. The interlocking action between the kit, the tube body, and the sleeve prevents the flexible layer from detaching from the kit.

[0017] The lifting component includes a material-receiving cylinder mounted on the feeding slider and a pair of slide rails. A base plate is slidably mounted on the slide rails. One end of the base plate is connected to the output end of the material-receiving cylinder. A connecting plate is mounted on the base plate. A correction component is mounted on one end of the connecting plate. One end of the correction component is connected to the carrier plate.

[0018] The correction component includes an upper plate connected to the connecting plate, two slide rail sliders mounted on the upper plate, a lower plate mounted on the slide rail sliders, and a correction cylinder mounted on the lower plate. The lower plate is connected to the carrier plate via a support column, and the correction cylinder is connected to a connecting block on the upper plate. The correction cylinder is an electric cylinder; when the feeding module provides power in the X-axis direction, the correction cylinder provides power in the Y-axis direction, and vice versa. After the feedback component acquires image data and transmits it to the control system, when the control system needs to adjust the feeding component to align the two plates, the correction cylinder will provide power in the other direction for the alignment of the plates.

[0019] The present invention also aims to provide another type of laminating machine for aligning and calibrating the face paper, thereby solving the technical problem of low alignment accuracy of cardboard in existing technologies. In existing laminating machines, the alignment accuracy of the two cardboard sheets to be laminated is generally low during the feeding process. Due to the negative pressure adsorption conveying, the cardboard is easily affected by airflow disturbances and conveying path deviations, resulting in slight offsets. Furthermore, the existing alignment and positioning structure is poorly designed and cannot perform real-time and accurate correction of the adsorbed cardboard, leading to edge misalignment and offset when the two cardboard sheets are laminated. This not only affects the neatness of the paper product's appearance but may also increase the scrap rate in subsequent die-cutting and trimming processes, increasing production costs.

[0020] To achieve the above objectives, the present invention provides the following technical solution: the mounting machine further includes an alignment component and a feedback component;

[0021] The alignment component adjusts the posture of the plates on the loading platform and works with the loading component to align the two plates.

[0022] The feedback component is located above the conveyor, acquires an image containing both plates simultaneously, and transmits it to the control system;

[0023] The alignment assembly includes uprights on both sides of the loading platform and an alignment plate above the conveyor. One upright is equipped with perpendicular side plates and baffles, while the other upright is equipped with a push cylinder, the output end of which is fitted with a push block. When the loading personnel place batches of panels on the loading platform, they can manually press the panels against the baffles. The push cylinder then uses the push block to push the panels against the side plates, thus correcting the panel picking posture through the side plates and baffles. The alignment plate serves to provide a foundation for alignment when two panels are aligned, driven by the loading module and the correction cylinder, pressing against the alignment plate.

[0024] The feedback component is a CCD camera or vision sensor that acquires image data. The loading personnel place batches of boards on the loading platform. The loading component picks up the boards from the platform, aligns two boards, stacks them at one end, and places them on the conveyor. The feedback component, located above the conveyor belt, acquires an image containing both boards simultaneously and uploads it to the control system. Based on the relative positions of the two boards in the image, the control system coordinates the loading and alignment components to align the two boards and adjust the stacked area. Through the configuration of the alignment, feedback, and loading components, the accuracy of aligning and stacking the two boards is improved, resulting in a higher quality finished product after integration.

[0025] The mounting machine also includes a lower pressure cylinder, which is located above the conveyor. A pressure plate is installed at the output end of the lower pressure cylinder, and the pressure plate presses the two plates together after they have been coated with glue.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The feedback component acquires an image containing both panels and uploads it to the control system. Based on the relative positions of the two panels in the image, the control system coordinates the feeding and alignment components to align the two panels and adjust their stacking area. Through the configuration of the alignment, feedback, and feeding components, the accuracy of alignment and stacking of the two panels is improved, resulting in a higher quality finished product after integration.

[0028] 2. Before negative pressure adsorption, the negative pressure system fills the air chamber with air, causing the air chamber to expand between the kit and the panel. This expands to accommodate the uneven surface of the panel due to its corrugated structure, ensuring that there are no air leaks between the nozzle and the panel, and preventing the panel from falling off when it is adsorbed by the nozzle.

[0029] 3. The plunger plate inserts the plunger into the mesh, creating a sealed negative pressure cavity inside the flared end. Even if the negative pressure system malfunctions, the plate will not fall due to pressure loss at the nozzle. In addition, when the negative pressure system is in normal use, the mesh plate and plunger plate separate the internal space of the nozzle. When the negative pressure adsorption of the nozzle on the plate is released, only the flared end of the nozzle is released from negative pressure. This not only enables rapid unloading of the plate, but also maintains negative pressure in the opening and closing cavity and in the pipeline connected to the negative pressure system, shortening the time for the next negative pressure adsorption and increasing the adsorption and feeding speed. Attached Figure Description

[0030] Figure 1 This is a perspective view of the overall structure of the present invention;

[0031] Figure 2 This is a perspective view of the feeding module of the present invention;

[0032] Figure 3 This is a perspective view of the suction nozzle of the present invention mounted on a carrier plate;

[0033] Figure 4 This is a partial sectional perspective view of the suction nozzle of the present invention;

[0034] Figure 5 This is a diagram showing the positions of the guide rod and push rod of the present invention;

[0035] Figure 6 This is a perspective view of the guide rod connecting plunger plate of the present invention;

[0036] Figure 7 For the present invention Figure 5 A magnified view of a portion of region A in the middle;

[0037] Figure 8 This is an exploded view of the lifting component of the present invention;

[0038] Figure 9This is a perspective view of the alignment component, pressing cylinder, and feedback component of the present invention on the bracket.

[0039] In the diagram: 1. Conveyor; 2. Loading platform; 3. Alignment assembly; 4. Pressing cylinder; 5. Feedback assembly; 6. Loading assembly; 10. Support; 31. Side plate; 32. Baffle; 33. Push cylinder; 34. Alignment plate; 61. Loading module; 62. Loading slider; 63. Picking cylinder; 64. Connecting plate; 65. Correction component; 651. Upper plate; 652. Correction cylinder; 653. Slide rail slider; 654. Lower plate; 66. Carrier plate; 67. Nozzle; 68. Tube body; 69. Shell; 70. Kit; 71. Soft layer; 72. Pressure relief port; 73. Air chamber; 74. Sealing plate; 75. Through groove; 76. Piezoelectric plate; 77. Mesh plate; 78. Plunger plate; 79. Plunger; 80. Guide rod; 81. Push rod. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example: Figure 1 - Figure 9 As shown, the present invention provides a technical solution for a laminating machine for aligning and calibrating face paper. In the following description, the board is referred to as paperboard. The laminating machine includes a support 10, a conveyor 1, two feeding platforms 2, an alignment component 3, a pressing cylinder 4, a feedback component 5, two feeding components 6, and a negative pressure system. The negative pressure system includes two input and output ends composed of pipelines. Valves are connected in series in both pipelines. One input end is connected to a suction nozzle 67, and the other input end is connected to a filter screen. One output end is connected to an air chamber 73, and the other output end is used for exhaust.

[0042] The support frame 10 spans the conveyor 1, and two loading platforms 2 are located at the input end of the conveyor 1. The cardboard to be integrated is placed on the loading platform 2.

[0043] The bracket 10 can also be equipped with a glue spraying mechanism (not shown in the figure) to spray glue onto the cardboard for bonding between the cardboards.

[0044] Alignment component 3 adjusts the posture of the cardboard on the loading platform 2 and works with loading component 6 to align the two cardboards;

[0045] The alignment assembly 3 includes uprights located on both sides of the loading platform 2 and an alignment plate 34 located above the conveyor 1. The alignment plate 34 is mounted on the bracket 10.

[0046] One upright is equipped with mutually perpendicular vertical side plates 31 and baffles 32, and another upright is equipped with a push cylinder 33, with a push block installed at the output end of the push cylinder 33.

[0047] The lower pressure cylinder 4 is located above the conveyor 1 and is mounted on the bracket 10. A pressure plate is installed at the output end of the lower pressure cylinder 4, and the pressure plate presses the two cardboard pieces after they have been coated with glue together.

[0048] Feedback component 5 is located on bracket 10 above conveyor 1. Feedback component 5 is a CCD camera or vision sensor that acquires image data, obtains images containing two cardboard pieces simultaneously, and transmits them to the control system.

[0049] One feeding component 6 corresponds to one feeding platform 2. The feeding module 61 picks up the cardboard from the feeding platform 2, aligns the cardboard, and stacks it on the conveyor 1.

[0050] The feeding assembly 6 includes a feeding module 61 spanning the conveyor 1 and the feeding platform 2. The feeding module 61 is mounted on the bracket 10. A lifting component is installed on the feeding slider 62 of the feeding module 61. A carrier plate 66 is installed at one end of the lifting component. Several suction nozzles 67 are installed on the carrier plate 66.

[0051] The suction nozzle 67 includes a tube 68, which is mounted on a carrier plate 66. The tube 68 is connected to the input end of the negative pressure system through an air hole on the carrier plate 66. An opening and closing mechanism is provided in the tube 68, which is used to close or open the internal channel of the tube 68.

[0052] The tube body 68 has a soft layer 71 at the adsorption end. The soft layer 71 is made of materials such as rubber and silicone. An air chamber 73 is provided at the edge of the soft layer 71. The air chamber 73 is connected to the output end of the negative pressure system. After the air chamber 73 is filled with air, the edge of the soft layer 71 expands.

[0053] The tube body 68 has a through groove 75 at one end that is flared. A kit 70 is threaded on the inner side of the flared end of the tube body 68. A soft layer 71 is fitted onto the kit 70. Through holes are provided on the kit 70 and the air chamber 73 at positions corresponding to the through groove 75.

[0054] When the kit 70 is installed on the tube 68, the flexible layer 71 is squeezed by the tube 68 and the sleeve 69 at the position where it wraps around the outside of the kit 70. The two ends of the flexible layer 71 are rolled up and wrapped around the outside of the kit 70. When replacing the new flexible layer 71, the flexible layer 71 can be removed from the kit 70, and it is not necessary to replace the kit 70 together.

[0055] The flexible layer 71 contacts the cardboard. When the flexible layer 71 needs to be replaced, unscrew the kit 70 from the tube 68 and replace it with a new flexible layer 71. After replacing the new flexible layer 71, screw the kit 70 back onto the tube 68. The cooperation between the kit 70, the tube 68, and the sleeve 69 prevents the flexible layer 71 from falling off the kit 70.

[0056] The straight section of the tube 68 extends outward to form an opening and closing cavity. A flat key is provided on the inner wall of the opening and closing cavity. The opening and closing mechanism includes a mesh plate 77 and a plunger plate 78 disposed in the opening and closing cavity. The plunger plate 78 slides in contact with the flat key and the inner wall of the opening and closing cavity. A plug 79 for sealing the mesh holes and a vent are provided on the plunger plate 78. Multiple piezoelectric plates 76 in a bent state are disposed between the plunger plate 78 and the opening and closing cavity. The piezoelectric plates 76 are connected to the control system through wires.

[0057] A sleeve 69 is fitted onto the tube body 68. The inner diameter of the open end of the sleeve 69 is equal to the outer diameter of the flared end of the tube body 68. The sleeve 69 and the flared end of the tube body 68 cooperate to form a positive pressure chamber. The output end of the negative pressure system is connected to the positive pressure chamber through a pipe with a valve connected in series.

[0058] The tube body 68 has several pressure relief ports 72 and insertion holes circumferentially arranged at one end of the flared end. There is a pressure relief port 72 between every two insertion holes. A push rod 81 is slidably installed in each insertion hole. One end of the push rod 81 is provided with a smooth curved surface. Two push rods 81 are connected to a sealing plate 74 that closes the pressure relief port 72. A spring is installed between the sealing plate 74 and the sleeve 69 through a pin.

[0059] The tube body 68 has a rod hole between the opening and closing cavity and the insertion hole. The rod hole connects the opening and closing cavity and the insertion hole. A guide rod 80 is slidably installed in the rod hole. One end of the guide rod 80 passes through the mesh plate 77 and is connected to the plunger plate 78.

[0060] The lifting component includes a material-receiving cylinder 63 mounted on the feeding slider 62 and a pair of slide rails. A base plate is slidably mounted on the slide rails. One end of the base plate is connected to the output end of the material-receiving cylinder 63. A connecting plate 64 is mounted on the base plate. A correction component 65 is mounted on one end of the connecting plate 64. One end of the correction component 65 is connected to the carrier plate 66.

[0061] The correction component 65 includes an upper plate 651 connected to the connecting plate 64, two slide rail sliders 653 mounted on the upper plate 651, a lower plate 654 mounted on the slide rail of the slide rail sliders 653, a correction cylinder 652 mounted on the lower plate 654, the correction cylinder 652 being an electric cylinder, the lower plate 654 being connected to the carrier plate 66 via a support column, and the correction cylinder 652 being connected to the connecting block on the upper plate 651.

[0062] When the feeding module 61 provides power in the X-axis direction, the correction cylinder 652 provides power in the Y-axis direction, and vice versa. After the feedback component 5 takes image data and transmits it to the control system, when the control system needs to adjust the feeding component 6 to align the two cardboards, the correction cylinder 652 will provide power in the other direction for the alignment of the cardboards.

[0063] The working principle of this invention: When the loading personnel place a batch of cardboard on the loading platform 2, they can first manually press the cardboard against the baffle 32. The cylinder rod of the push cylinder 33 extends and pushes the upper cardboard against the side plate 31 through the push block. Through the cooperation of the side plate 31, the baffle 32 and the push cylinder 33, the posture correction of the cardboard before it is picked up is achieved.

[0064] When picking up cardboard, the feeding module 61 moves the lifting component and carrier plate 66 above the cardboard. The picking cylinder 63 lowers the height of the carrier plate 66, allowing the suction nozzle 67 to contact and adhere to the cardboard. The negative pressure system draws in external air through the input end connected to the filter screen and inflates the positive pressure chamber through pipes, channels 75, and through holes, increasing the air pressure in the positive pressure chamber and causing the air chamber 73 to expand. When the air pressure in the positive pressure chamber reaches the set value, the valve closes the pipes to maintain pressure in the positive pressure chamber. The air chamber 73 expands between the kit 70 and the cardboard, eliminating any air leakage points between the suction nozzle 67 and the cardboard, preventing the cardboard from falling when it is sucked up by the suction nozzle 67.

[0065] After the negative pressure system fills the air chamber 73 with air for a certain period of time, before the negative pressure system extracts air from the suction nozzle 67, the control system energizes the piezoelectric plate 76 through a wire, causing the piezoelectric plate 76 to bend further while lifting the plunger plate 78, causing the plunger 79 to disengage from the mesh of the mesh plate 77, thus releasing the mesh of the mesh plate 77. The negative pressure system begins to extract air from the suction nozzle 67 to adsorb the cardboard under negative pressure. When the negative pressure reaches the set value, the pressure values ​​on both sides of the piezoelectric plate 76 and the mesh plate 77 are the same. The control system introduces a reverse current into the piezoelectric plate 76, causing the piezoelectric plate 76 to return to its original shape and insert the plug 79 into the mesh, forming a sealed negative pressure cavity inside the flared end. At this time, even if the negative pressure system malfunctions, the cardboard will not fall due to the loss of pressure in the suction nozzle 67. Moreover, when the negative pressure system is in normal use, it divides the internal space of the suction nozzle 67. When the negative pressure adsorption of the cardboard by the suction nozzle 67 is released, only the flared end of the suction nozzle 67 is released from negative pressure. This not only enables the cardboard to be fed quickly, but also maintains negative pressure in the opening and closing cavity and in the pipeline connected to the negative pressure system, shortening the time for the next negative pressure adsorption and increasing the adsorption and feeding speed.

[0066] After the suction nozzle 67 picks up the cardboard, the feeding cylinder 63 lifts the carrier plate 66, and the feeding module 61 transfers the cardboard to the top of the conveyor 1. After the cardboard is moved to the set position by the feeding module 61, the feedback component 5 acquires an image containing two cardboards at the same time and uploads the image to the control system. The control system controls the feeding module 61 and the correction cylinder 652 in the two feeding components 6 according to the relative position of the two cardboards in the image, so that the feeding module 61, the correction cylinder 652 and the alignment plate 34 cooperate with each other to align the two cardboards and adjust the overlapping area of ​​the two cardboards.

[0067] Under the feedback of the feedback component 5 and the regulation of the control system, the feeding module 61 and the correction cylinder 652 align the two cardboards and stack them at one end. Then, the picking cylinder 63 lowers the height of the carrier plate 66 so that the cardboard is placed on the conveyor 1. When the negative pressure of the suction nozzle 67 is released, the control system increases the reverse current flowing into the piezoelectric plate 76, so that the piezoelectric plate 76 gradually tends to a flat state. During this process, the piezoelectric plate 76 presses the plunger plate 78 down, so that the plunger plate 78 pushes the guide rod 80 towards the push rod 81. One end of the guide rod 80 contacts the smooth curved surface of the push rod 81 and pushes the push rod 81 into the positive pressure chamber, so that the sealing plate 74 separates from the pressure relief port 72. The air in the positive pressure chamber and the air chamber 73 quickly enters the interior of the horn-shaped end of the suction nozzle 67 through the pressure relief port 72, so as to quickly release the negative pressure inside the horn-shaped end of the suction nozzle 67.

[0068] After the cardboard is placed on conveyor 1, the cylinder rod of the lower cylinder 4 extends and presses the pressure plate onto the two stacked cardboards, pressing the two glued cardboards together. The material take-up cylinder 63 drives the carrier plate 66 to reset. During the reset process, the control system supplies a positive current to the piezoelectric plate 76, causing the piezoelectric plate 76 to return to its original state. Under the action of the piezoelectric plate 76, the plunger plate 78 returns to the state of only blocking the mesh plate 77. The push rod 81 is then reset under the push of the spring, causing the sealing plate 74 to seal the pressure relief port 72 again.

[0069] After the pressure cylinder 4 applies pressure for a certain period of time, it resets, and the conveyor 1 transports the cardboard to the subsequent workstation for further processing. The loading module 61 moves the carrier plate 66 back to the cardboard on the loading table 2 to continue picking up cardboard.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mounting machine for aligning and calibrating sheet paper, comprising a conveyor (1), at least two loading tables (2), and a negative pressure system, wherein the loading tables (2) are located at the input end of the conveyor (1), and the plates to be aligned are placed on the loading tables (2), characterized in that: It also includes a feeding component (6); The feeding assembly (6) includes a feeding module (61) spanning the conveyor (1) and the feeding platform (2). A lifting component is installed on the feeding slider (62) of the feeding module (61). A carrier plate (66) is installed at one end of the lifting component. Several suction nozzles (67) are installed on the carrier plate (66). The suction nozzle (67) includes a tube (68), which is connected to the input end of the negative pressure system. An opening and closing mechanism is provided in the tube (68), which is used to close or open the internal channel of the tube (68). The tube (68) has a soft layer (71) at the adsorption end, and an air chamber (73) is provided at the edge of the soft layer (71). The air chamber (73) is connected to the output end of the negative pressure system. After the air chamber (73) is filled with air, the edge of the soft layer (71) expands. The tube (68) is connected to the input end of the negative pressure system through the air hole on the carrier plate (66). The tube (68) is provided with a through groove (75) at one end that is flared. A kit (70) is installed on the inner side of the tube (68) that is flared. The soft layer (71) is provided on the kit (70). Through holes are provided on the kit (70) and the air chamber (73) at the positions corresponding to the through groove (75). The straight section of the tube (68) extends outward to form an opening and closing cavity. A flat key is provided on the inner wall of the opening and closing cavity. The opening and closing mechanism includes a mesh plate (77) and a plunger plate (78) provided in the opening and closing cavity. The plunger plate (78) slides in contact with the flat key and the inner wall of the opening and closing cavity. A plug (79) for sealing the mesh holes and a vent are provided on the plunger plate (78). A plurality of piezoelectric plates (76) in a bent state are provided between the plunger plate (78) and the opening and closing cavity. The piezoelectric plates (76) are connected to the control system through wires.

2. The laminating machine for aligning and calibrating face paper according to claim 1, characterized in that: The tube body (68) is fitted with a sleeve (69). The inner diameter of the open end of the sleeve (69) is equal to the outer diameter of the trumpet-shaped end of the tube body (68). The sleeve (69) and the trumpet-shaped end of the tube body (68) cooperate to form a positive pressure cavity. The output end of the negative pressure system is connected to the positive pressure cavity through a pipe with a valve connected in series. The tube body (68) has several pressure relief ports (72) and insertion holes circumferentially arranged at one end of the flared end. There is a pressure relief port (72) between every two insertion holes. A push rod (81) is slidably installed in each insertion hole. One end of the push rod (81) is provided with a smooth curved surface. Two push rods (81) are connected to a sealing plate (74) that closes the pressure relief port (72). A spring is installed between the sealing plate (74) and the casing (69) through a pin. The tube body (68) has a rod hole between the opening and closing cavity and the insertion hole. The rod hole connects the opening and closing cavity and the insertion hole. A guide rod (80) is slidably installed in the rod hole. One end of the guide rod (80) passes through the mesh plate (77) and is connected to the plunger plate (78).

3. A laminating machine for aligning and calibrating face paper according to claim 1, characterized in that: The soft layer (71) is fitted onto the kit (70). When the kit (70) is installed on the tube (68), the soft layer (71) is squeezed by the tube (68) and the shell (69) at the position where it wraps around the outside of the kit (70).

4. A laminating machine for aligning and calibrating face paper according to claim 1, characterized in that: The lifting component includes a picking cylinder (63) mounted on the feeding slider (62) and a pair of slide rails. A base plate is slidably mounted on the slide rails. One end of the base plate is connected to the output end of the picking cylinder (63). A connecting plate (64) is mounted on the base plate. A correction component (65) is mounted on one end of the connecting plate (64). One end of the correction component (65) is connected to the carrier plate (66).

5. A laminating machine for aligning and calibrating face paper according to claim 4, characterized in that: The corrective component (65) includes an upper plate (651) connected to a connecting plate (64) and two slide rail sliders (653) mounted on the upper plate (651). A lower plate (654) is mounted on the slide rail of the slide rail slider (653). A corrective cylinder (652) is mounted on the lower plate (654). The lower plate (654) is connected to the carrier plate (66) through a support column. The corrective cylinder (652) is connected to a connecting block on the upper plate (651).

6. A laminating machine for aligning and calibrating face paper according to claim 1, characterized in that: The mounting machine also includes an alignment component (3) and a feedback component (5); The alignment component (3) adjusts the posture of the plates on the loading platform (2) and, together with the loading component (6), aligns the two plates. The feedback component (5) is located above the conveyor (1), acquires an image containing two plates simultaneously, and transmits it to the control system; The alignment assembly (3) includes uprights on both sides of the loading platform (2) and an alignment plate (34) above the conveyor (1). One upright is equipped with vertical side plates (31) and baffles (32) that are perpendicular to each other, and the other upright is equipped with a push cylinder (33). The output end of the push cylinder (33) is equipped with a push block.

7. A laminating machine for aligning and calibrating face paper according to claim 6, characterized in that: The feedback component (5) is a CCD camera or vision sensor that acquires image data.

8. A laminating machine for aligning and calibrating face paper according to claim 1, characterized in that: The mounting machine also includes a lower pressure cylinder (4), which is located above the conveyor (1). A pressure plate is installed at the output end of the lower pressure cylinder (4), and the pressure plate presses the two plates together after they have been coated with glue.

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