Plastic plate feeding system and method for refrigerator cabinet

Abstract

The invention provides a plastic plate feeding system and method for a refrigerator cabinet. The system comprises a controller, a length adjusting mechanism, a lifting mechanism, a translation mechanism and a suction cup assembly. Firstly, the lifting mechanism and the length adjusting mechanism are driven by the translation mechanism to move to the position above a to-be-separated plastic plate; then the positions of the suction cup assemblies are adjusted through a length adjusting mechanism, so that the outer side suction cup assemblies are located above the corners of the top face of the plastic plate; then the lifting mechanism drives the length adjusting mechanism to move downwards, so that the suction cup assembly is in contact with the plastic plate; then the suction cup assembly is controlled to be sucked to the top face of the plastic plate in a vacuum mode; and the outer side suction cup assembly is controlled to ascend to a preset first position, so that the corners of the plastic plate are tilted to form a curved surface shape, the negative pressure between the plastic plate and the lower plate is reduced, and the problem that multiple plastic plates are grabbed during feeding is solved.

Description

Technical Field

[0001] The present application relates to the technical field of plate material feeding systems, and in particular to a plastic plate material feeding system and method for refrigerator cabinets. Background Art

[0002] The plastic sheet feeding system for refrigerator cabinets is an important part of the refrigerator manufacturing process. It is responsible for accurately transporting the plastic sheets to be processed from the storage area or raw material rack to the processing equipment or production line for subsequent cutting, forming, assembly and other processes. The plastic sheet feeding method is to first stack the plastic sheets flatly and place them on the feeding plate, and then use the manipulator of the plastic sheet feeding system to adsorb and grab the sheets for feeding. The manipulator grabbing method is that the manipulator is a plane with several pairs of suction cups on it. After the manipulator is lowered to the sheet, the suction cups begin to evacuate and adsorb. After 1-2 seconds of evacuation and adsorption, the manipulator is lifted as a whole, grabs a plastic sheet and rises to the position, and then moves horizontally to the specified position.

[0003] In the related art, the plastic sheet feeding method for refrigerator cabinets may absorb multiple plastic sheets during one grabbing process. This is mainly because when the sheets are stacked on a flat surface, they are closely attached and easily form a negative pressure phenomenon to attract them together. This situation will not only cause production suspension, but also cause the sheets that are already in the heating station to be damaged, thus seriously affecting production efficiency and increasing production waste. In order to solve this problem, the robot can grab the sheet and shake it more obviously during the rising process, trying to separate the two plastic sheets by shaking, but the problem of grabbing multiple plastic sheets will still occur. Summary of the invention

[0004] The present application provides a plastic sheet feeding system and method for a refrigerator cabinet, so as to solve the problem of grabbing multiple sheets when feeding the plastic sheet.

[0005] The first aspect of the present application provides a plastic sheet material feeding system for a refrigerator cabinet, comprising: a controller, a length adjustment mechanism, a lifting mechanism, a translation mechanism and a suction cup assembly;

[0006] The suction cup assembly is arranged at the bottom of the length adjustment mechanism, and is used to absorb the plastic sheet; the length adjustment mechanism is arranged at the bottom of the lifting mechanism, and is used to adjust the overall length of the suction cup assembly to adapt to plastic sheets of different sizes; one side of the lifting mechanism is connected to the translation mechanism, and the lifting mechanism is used to move the length adjustment mechanism in a vertical direction; the translation mechanism is used to move the lifting mechanism in a preset horizontal direction; the controller is electrically connected to the length adjustment mechanism, the lifting mechanism, the translation mechanism and the suction cup assembly respectively;

[0007] The suction cup assembly includes an outer suction cup assembly and an inner suction cup assembly; the outer suction cup assembly is arranged on the outer side of the bottom plane of the length adjustment mechanism, and is used for vacuum adsorbing the outer side of the plastic sheet and adjusting the upward height of the edge of the plastic sheet; the inner suction cup assembly is arranged on the inner side of the bottom plane of the length adjustment mechanism, and is used for vacuum adsorbing the inner side of the plastic sheet.

[0008] The present application uses the controller to first control the outer suction cup assembly to rise, while the inner suction cup assembly remains unchanged, so that the plastic sheet is formed into a curved shape, so that the grasped plastic sheet is no longer in a tightly fitted state with the plastic sheet below, thereby completely avoiding the hidden danger of two adjacent plastic sheets being fitted together due to negative pressure, and solving the problem of grasping multiple sheets when feeding plastic sheets.

[0009] Optionally, the plastic sheet material feeding system for refrigerator cabinets further includes a plurality of blowing components;

[0010] The blowing assembly is arranged at the edge of the bottom plane of the length adjustment mechanism, and the blowing assembly includes a compressed air supply device and a blowing nozzle; the compressed air supply device is connected to the blowing nozzle; the controller is electrically connected to the compressed air supply device; the nozzle of the blowing nozzle faces the plastic sheet to blow the plastic sheet.

[0011] The blowing assembly is used to blow the plastic sheet, which can not only remove dust, debris and other impurities on the surface of the sheet, improve the adsorption effect and processing quality, but also reduce the wear on the surface of the plastic sheet caused by friction of impurities to a certain extent, further improving the protection effect of the plastic sheet. At the same time, the precise adsorption and handling process also helps to prevent the plastic sheet from being accidentally collided and damaged during the loading process.

[0012] Optionally, the outer suction cup assembly includes four telescopic suction cups, and the four telescopic suction cups are respectively arranged at four corners of the bottom plane of the length adjustment mechanism;

[0013] The telescopic suction cup includes a suction cup, a cylinder and a piston rod; one end of the piston rod is connected to the movable piston inside the cylinder, and the other end of the piston rod is fixedly connected to the cylinder; the cylinder is electrically connected to the controller to drive the suction cup to rise and fall by controlling the extension and retraction of the movable piston.

[0014] The four telescopic suction cups are respectively arranged at the four corners of the bottom plane of the length adjustment mechanism. This layout enables the suction cup assembly to evenly disperse the force when working. When in contact with the surface of the plastic sheet, the four telescopic suction cups can share the load, effectively avoiding instability or damage caused by excessive local force. In addition, by controlling the expansion and contraction of the movable piston to drive the suction cup to rise and fall, the outer suction cup assembly can adjust the upward height of the edge of the plastic sheet through the lifting action while adsorbing the plastic sheet, thereby avoiding the problem of grabbing multiple sheets.

[0015] Optionally, the inner suction cup assembly includes four fixed suction cups; the fixed suction cups and the telescopic suction cups are evenly arranged on the plane at the bottom of the length adjustment mechanism.

[0016] The fixed suction cup and the telescopic suction cup are evenly distributed on the bottom plane of the length adjustment mechanism and work together so that the presence of the fixed suction cup increases the number of suction points, and when lifting the plastic sheet, the weight of the object can be dispersed, and the load borne by each suction point is relatively reduced. The fixed suction cup can also remain motionless when the telescopic suction cup is extended and retracted, ensuring the stability of the inner side of the plastic sheet, thereby facilitating the control of the upward warping height of the edge of the plastic sheet, and preventing the plastic sheet from being damaged due to excessive upward warping.

[0017] Optionally, the stroke of the piston rod is 10-100 mm.

[0018] The stroke of the piston rod can ensure that after the piston rod is retracted, the outer suction cup assembly is 10-100 mm higher than the inner suction cup assembly. This can not only make the edge of the plastic sheet warp up to no longer form a tight fit with the next plastic sheet, but also prevent the plastic sheet from being damaged due to excessive warping of the edge.

[0019] Optionally, the inner suction cup assembly or the outer suction cup assembly is provided with a vacuum pipeline, a control valve and a vacuum pump;

[0020] One end of the vacuum pipe is respectively connected to the inner suction cup assembly or the outer suction cup assembly, and the control valve is connected to the other end of the vacuum pipe; the output end of the control valve is connected to the input end of the vacuum pump; the controller is electrically connected to the control valve to control the adsorption and release of the plastic sheet by the inner suction cup assembly or the outer suction cup assembly.

[0021] By forming negative pressure in the vacuum pipe, a strong adsorption force is provided to the inner suction cup assembly or the outer suction cup assembly. This adsorption force can firmly adsorb items of various materials, especially materials such as plastic sheets that have a flat surface but are relatively light and easily deformed, reducing the risk of plastic sheets falling during lifting.

[0022] Optionally, a vacuum pipe and a vacuum generator are provided on the inner suction cup assembly or the outer suction cup assembly;

[0023] One end of the vacuum pipe is respectively connected to the inner suction cup assembly or the outer suction cup assembly, the vacuum generator is connected to the other end of the vacuum pipe, and the vacuum generator is electrically connected to the controller to control the adsorption and release of the plastic sheet by the inner suction cup assembly or the outer suction cup assembly.

[0024] The vacuum generator is directly connected to the vacuum pipe, eliminating the need for complex intermediate vacuum pumps and other priming equipment. This simplified structural design reduces the complexity of the system and makes the entire lifting device more compact in structure. The vacuum generator is electrically connected to the controller to achieve direct and rapid control of the adsorption process. When it is necessary to adsorb plastic sheets, the controller sends a command to the vacuum generator, which can quickly generate negative pressure in the vacuum pipe, allowing the suction cup assembly to immediately form an adsorption force to achieve precise adjustment.

[0025] A second aspect of the present application provides a method for feeding plastic sheets for refrigerator cabinets, which is applied to the plastic sheet feeding system for refrigerator cabinets described in the first aspect, and the method comprises:

[0026] The lifting mechanism and the length adjustment mechanism are driven by the translation mechanism to move to the top of the plastic sheet to be separated;

[0027] The position of the suction cup assembly is adjusted by the length adjustment mechanism so that the outer suction cup assembly is located above the corner of the top surface of the plastic sheet;

[0028] The length adjustment mechanism is driven to move downward by the lifting mechanism so that the suction cup assembly contacts the plastic sheet;

[0029] Control the suction cup assembly to vacuum adsorb on the top surface of the plastic sheet;

[0030] Controlling the outer suction cup assembly to rise to a preset first position so that the corners of the plastic sheet are raised to form a curved shape;

[0031] The lifting mechanism drives the length adjustment mechanism to move upward, so as to drive the adsorbed plastic sheet to rise;

[0032] The lifting mechanism and the length adjustment mechanism are driven to move to a specified position by the translation mechanism.

[0033] The above method controls the outer suction cup assembly to rise by the controller first, while the inner suction cup assembly remains unchanged, so that the plastic sheet is formed into a curved shape, so that the grasped plastic sheet is no longer in a tightly fitted state with the plastic sheet below, thereby completely avoiding the hidden danger of two adjacent plastic sheets being fitted together due to negative pressure, and solving the problem of grasping multiple sheets when feeding plastic sheets.

[0034] Optionally, the suction cup assembly is vacuum-adsorbed in front of the plastic sheet, and the bottoms of the outer suction cup assembly and the inner suction cup assembly are both located on the same plane;

[0035] After the outer suction cup assembly rises to the preset first position, the bottom of the outer suction cup assembly is 10-100 mm higher than the bottom of the inner suction cup assembly.

[0036] After the outer suction cup assembly rises to the preset first position, the bottom of the outer suction cup assembly is 10-100mm higher than the bottom of the inner suction cup assembly, which can not only make the edge of the plastic sheet warp up to no longer form a tight fit with the plastic sheet below, but also prevent the edge from being damaged due to excessive warping.

[0037] Optionally, after controlling the suction cup assembly to be vacuum-adsorbed on the top surface of the plastic sheet, the method further comprises:

[0038] Point the nozzle of the air blowing nozzle toward the plastic sheet;

[0039] The compressed air supply device is controlled to start to blow the plastic sheet.

[0040] By blowing the plastic sheet, not only can dust, debris and other impurities on the surface of the sheet be removed, improving the adsorption effect and processing quality, but also to a certain extent, it can reduce the wear on the surface of the plastic sheet caused by friction of impurities, further improving the protection effect of the plastic sheet. At the same time, the precise adsorption and handling process also helps to prevent the plastic sheet from being accidentally collided and damaged during the loading process.

[0041] It can be seen from the above technical scheme that the present application provides a plastic sheet feeding system and method for refrigerator cabinets, the plastic sheet feeding system for refrigerator cabinets includes: a controller, a length adjustment mechanism, a lifting mechanism, a translation mechanism and a suction cup assembly; the suction cup assembly is arranged at the bottom of the length adjustment mechanism for adsorbing plastic sheets; the length adjustment mechanism is arranged at the bottom of the lifting mechanism for adjusting the overall length of the suction cup assembly to adapt to plastic sheets of different sizes; one side of the lifting mechanism is connected to the translation mechanism, the lifting mechanism is used to move the length adjustment mechanism in a vertical direction; the translation mechanism is used to move the lifting mechanism in a preset horizontal direction; the controller is electrically connected to the length adjustment mechanism, the lifting mechanism, the translation mechanism and the suction cup assembly respectively; the suction cup assembly includes an outer suction cup assembly and an inner suction cup assembly; the outer suction cup assembly is arranged on the outer side of the bottom plane of the length adjustment mechanism for vacuum adsorbing the outer side of the plastic sheet and adjusting the upturned height of the edge of the plastic sheet; the inner suction cup assembly is arranged on the inner side of the bottom plane of the length adjustment mechanism for vacuum adsorbing the inner side of the plastic sheet. To solve the problem of grabbing multiple sheets when feeding plastic sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] Figure 1 This is a structural schematic diagram of a plastic sheet material feeding system for a refrigerator cabinet according to an embodiment of the present application;

[0044] Figure 2 This is a schematic structural diagram of a suction cup assembly in a plastic sheet material feeding system for a refrigerator cabinet according to an embodiment of the present application;

[0045] Figure 3 This is a schematic diagram of the process of the plastic sheet material feeding method for refrigerator cabinets described in an embodiment of the present application.

[0046] Illustration Description:

[0047] Among them, 1-length adjustment mechanism; 2-lifting mechanism; 3-suction cup assembly; 31-outer suction cup assembly; 32-inner suction cup assembly; 4-translation mechanism; 5-blowing assembly. DETAILED DESCRIPTION

[0048] The embodiments will be described in detail below, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following embodiments do not represent all implementation methods consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application.

[0049] The plastic sheet feeding system for refrigerator cabinets is an important part of the refrigerator manufacturing process. It is responsible for accurately transporting the plastic sheets to be processed from the storage area or raw material rack to the processing equipment or production line for subsequent cutting, forming, assembly and other processes. The plastic sheet feeding method is to first stack the plastic sheets flatly and place them on the feeding plate, and then use the manipulator of the plastic sheet feeding system to adsorb and grab the sheets for feeding. The manipulator grabbing method is that the manipulator is a plane with several pairs of suction cups on it. After the manipulator is lowered to the sheet, the suction cups begin to evacuate and adsorb. After 1-2 seconds of evacuation and adsorption, the manipulator is lifted as a whole, grabs a plastic sheet and rises to the position, and then moves horizontally to the specified position.

[0050] In the method for feeding plastic sheets for refrigerator cabinets in the related embodiments, multiple plastic sheets may be adsorbed during one grabbing process. This is mainly because when the sheets are stacked on a plane, they are closely attached and easily form a phenomenon of negative pressure sucking them together. This situation will not only cause production to be suspended, but also cause the sheets that are already in the heating station to be damaged, thereby seriously affecting production efficiency and increasing production waste. In order to solve this problem, the robot can grab the sheet and shake it more obviously during the rising process, trying to separate the two plastic sheets by shaking, but the problem of grabbing multiple plastic sheets will still occur.

[0051] To solve the problem of grabbing multiple sheets when feeding plastic sheets, refer to Figure 1 , some embodiments of the present application provide a plastic sheet feeding system for a refrigerator cabinet, comprising: a controller, a length adjustment mechanism 1, a lifting mechanism 2, a translation mechanism 4 and a suction cup assembly 3;

[0052] The suction cup assembly 3 is arranged at the bottom of the length adjustment mechanism 1, and is used to absorb the plastic sheet; the length adjustment mechanism 1 is arranged at the bottom of the lifting mechanism 2, and is used to adjust the overall length of the suction cup assembly 3 to adapt to plastic sheets of different sizes; one side of the lifting mechanism 2 is connected to the translation mechanism 4, and the lifting mechanism 2 is used to move the length adjustment mechanism 1 in the vertical direction; the translation mechanism 4 is used to move the lifting mechanism 2 in a preset horizontal direction; the controller is electrically connected to the length adjustment mechanism 1, the lifting mechanism 2, the translation mechanism 4 and the suction cup assembly 3 respectively;

[0053] The suction cup assembly 3 includes an outer suction cup assembly 31 and an inner suction cup assembly 32; the outer suction cup assembly 31 is arranged on the outer side of the bottom plane of the length adjustment mechanism 1, and is used for vacuum adsorption of the outer side of the plastic sheet and adjusting the upward height of the edge of the plastic sheet; the inner suction cup assembly 32 is arranged on the inner side of the bottom plane of the length adjustment mechanism 1, and is used for vacuum adsorption of the inner side of the plastic sheet.

[0054] It should be understood that the controller refers to a main command device that controls the start, speed regulation, braking and reversal of the motor by changing the wiring of the main circuit or control circuit and the resistance value in the circuit in a predetermined order, and a single-chip microcomputer can be selected. The length adjustment mechanism 1 can achieve precise adjustment of the length by a motor-driven lead screw, slide rail and other mechanisms. The lifting mechanism 2 can adopt a cylinder, an electric push rod, a hydraulic cylinder and other driving methods to achieve smooth and precise control of the lifting action. The translation mechanism 4 can adopt a motor-driven roller, a chain, a synchronous belt and other mechanisms to achieve rapid and precise positioning of the translation action.

[0055] The present application uses the controller to first control the outer suction cup assembly 31 to rise, while the inner suction cup assembly 32 remains unchanged, so that the plastic sheet is formed into a curved shape, so that the grasped plastic sheet is no longer in a tightly fitted state with the plastic sheet below, thereby completely avoiding the hidden danger of two adjacent plastic sheets being fitted together due to negative pressure, and solving the problem of grasping multiple sheets when feeding plastic sheets.

[0056] In some embodiments, the plastic sheet material feeding system for refrigerator cabinets further includes a plurality of blowing components 5;

[0057] The blowing assembly 5 is arranged at the edge of the bottom plane of the length adjustment mechanism 1, and the blowing assembly 5 includes a compressed air supply device and a blowing nozzle; the compressed air supply device is connected to the blowing nozzle; the controller is electrically connected to the compressed air supply device; the nozzle of the blowing nozzle faces the plastic sheet to blow the plastic sheet.

[0058] It should be understood that the controller is electrically connected to the compressed air supply device and can control the switch of the blowing nozzle and the intensity of the blowing.

[0059] The blowing assembly 5 is used to blow the plastic sheet, which can not only remove dust, debris and other impurities on the surface of the sheet, improve the adsorption effect and processing quality, but also reduce the wear on the surface of the plastic sheet caused by friction of impurities to a certain extent, further improving the protection effect of the plastic sheet. At the same time, the precise adsorption and handling process also helps to prevent the plastic sheet from being accidentally bumped and damaged during the loading process.

[0060] In some embodiments, see Figure 2The outer suction cup assembly 31 includes four telescopic suction cups, and the four telescopic suction cups are respectively arranged at the four corners of the bottom plane of the length adjustment mechanism 1;

[0061] The telescopic suction cup includes a suction cup, a cylinder and a piston rod; one end of the piston rod is connected to the movable piston inside the cylinder, and the other end of the piston rod is fixedly connected to the cylinder; the cylinder is electrically connected to the controller to drive the suction cup to rise and fall by controlling the extension and retraction of the movable piston.

[0062] The four telescopic suction cups are respectively arranged at the four corners of the bottom plane of the length adjustment mechanism 1. This layout enables the suction cup assembly 3 to evenly disperse the force when working. When in contact with the surface of the plastic sheet, the four telescopic suction cups can share the load, effectively avoiding instability or damage caused by excessive local force. In addition, by controlling the expansion and contraction of the movable piston to drive the suction cup to rise and fall, the outer suction cup assembly 31 can adjust the upward height of the edge of the plastic sheet through the lifting action while adsorbing the plastic sheet, thereby avoiding the problem of grabbing multiple sheets.

[0063] In some embodiments, see Figure 2 The inner suction cup assembly 32 includes four fixed suction cups; the fixed suction cups and the telescopic suction cups are evenly arranged on the plane at the bottom of the length adjustment mechanism 1.

[0064] The fixed suction cup and the telescopic suction cup are evenly distributed on the bottom plane of the length adjustment mechanism 1, and work together so that the presence of the fixed suction cup increases the number of suction points, and when lifting the plastic sheet, the weight of the object can be dispersed, and the load borne by each suction point is relatively reduced. The fixed suction cup can also remain motionless when the telescopic suction cup is extended and retracted, ensuring the stability of the inner side of the plastic sheet, thereby facilitating the control of the upward warping height of the edge of the plastic sheet, and preventing the plastic sheet from being damaged due to excessive upward warping.

[0065] In some embodiments, the stroke of the piston rod is 10-100 mm.

[0066] The stroke of the piston rod can ensure that after the piston rod is retracted, the outer suction cup assembly 31 is 10-100 mm higher than the inner suction cup assembly 32. This can not only make the edge of the plastic sheet warp up to no longer form a tight fit with the next plastic sheet, but also prevent the edge from being damaged due to excessive warping.

[0067] In some embodiments, the inner suction cup assembly 32 or the outer suction cup assembly 31 is provided with a vacuum pipeline, a control valve and a vacuum pump;

[0068] One end of the vacuum pipe is respectively connected to the inner suction cup assembly 32 or the outer suction cup assembly 31, and the control valve is connected to the other end of the vacuum pipe; the output end of the control valve is connected to the input end of the vacuum pump; the controller is electrically connected to the control valve to control the adsorption and release of the plastic sheet by the inner suction cup assembly 32 or the outer suction cup assembly 31.

[0069] It should be understood that, through the combined operation of the vacuum pipe, control valve and vacuum pump by the controller, the adsorption force can be accurately adjusted according to the characteristics of different plastic sheets (such as size, weight, surface flatness, etc.) and the requirements of the lifting process. For smaller and lighter plastic sheets, the adsorption force can be appropriately reduced to avoid damage to the sheets due to excessive adsorption force; while for larger and heavier sheets, the adsorption force can be increased to ensure safe lifting. This precise control capability allows the lifting device to be flexibly applied to a variety of scenarios to meet different production needs.

[0070] The method of using the above-mentioned components can be specifically divided into four stages: first, place the suction cup on the surface of the plastic sheet to be adsorbed, and ensure that there is no foreign matter between the suction cup and the sheet and that the contact is tight. Then open the control valve and start the vacuum pump. The vacuum pump begins to extract the air inside the suction cup. As the air is gradually extracted, a negative pressure is formed inside the suction cup, thereby generating an adsorption force on the plastic sheet. When the required vacuum degree is reached inside the suction cup, the plastic sheet is firmly adsorbed on the suction cup. At this time, the plastic sheet can be transported to the specified position by the translation mechanism 4. When the adsorption force needs to be released, close the control valve and cut off the connection between the vacuum pump and the suction cup. As the air inside the suction cup gradually flows back, the negative pressure disappears, and the adsorption force between the plastic sheet and the suction cup weakens until it disappears. At this time, the plastic sheet can be easily removed.

[0071] By forming negative pressure in the vacuum pipe, a strong adsorption force is provided to the inner suction cup assembly 32 or the outer suction cup assembly 31. This adsorption force can firmly adsorb objects of various materials, especially materials such as plastic sheets that have a flat surface but are relatively light and easily deformed, thereby reducing the risk of plastic sheets falling during lifting.

[0072] In other embodiments, a vacuum pipe and a vacuum generator are provided on the inner suction cup assembly 32 or the outer suction cup assembly 31; one end of the vacuum pipe is respectively connected to the inner suction cup assembly 32 or the outer suction cup assembly 31, the vacuum generator is connected to the other end of the vacuum pipe, and the vacuum generator is electrically connected to the controller to control the adsorption and release of the plastic sheet by the inner suction cup assembly 32 or the outer suction cup assembly 31.

[0073] The vacuum generator is directly connected to the vacuum pipe, eliminating the need for complex intermediate priming equipment such as vacuum pumps. This simplified structural design reduces the complexity of the system and makes the entire lifting device more compact in structure. The vacuum generator is electrically connected to the controller to achieve direct and rapid control of the adsorption process. When it is necessary to adsorb the plastic sheet, the controller sends a command to the vacuum generator, which can quickly generate negative pressure in the vacuum pipe, so that the suction cup assembly 3 immediately forms an adsorption force to achieve precise adjustment.

[0074] Some embodiments of the present application also provide a method for feeding plastic sheets for refrigerator cabinets, which is applied to the plastic sheet feeding system for refrigerator cabinets described in the above embodiments. Figure 3 , the method comprising:

[0075] S100: The lifting mechanism 2 and the length adjustment mechanism 1 are driven by the translation mechanism 4 to move to above the plastic sheet to be separated.

[0076] It should be understood that the translation mechanism 4 accurately moves the lifting mechanism 2 and the length adjustment mechanism 1 to the appropriate position above the plastic sheet according to the program and position information preset by the controller, so as to prepare for the subsequent adsorption operation.

[0077] S200: adjusting the position of the suction cup assembly 3 by means of the length adjustment mechanism 1 so that the outer suction cup assembly 31 is located above the top corner of the plastic sheet.

[0078] It should be understood that the length adjustment mechanism 1 can accurately adjust the position of the suction cup assembly 3 according to the size and shape of the plastic sheet to ensure the accuracy of adsorption. Through the precise cooperation of the length adjustment mechanism 1 and the lifting mechanism 2, it can be adjusted according to plastic sheets of different sizes to ensure that the suction cup assembly 3 accurately fits the surface of the sheet and avoids the problem of grabbing multiple sheets due to position deviation. For example, when processing smaller-sized plastic sheets, the length adjustment mechanism 1 can accurately shorten the overall length of the suction cup assembly 3 so that it just fits the size of the sheet; and when processing larger-sized sheets, the length can be adjusted accordingly to ensure the stability of adsorption.

[0079] S300: The length adjustment mechanism 1 is driven to move downward by the lifting mechanism 2 so that the suction cup assembly 3 contacts the plastic sheet.

[0080] S400: Control the suction cup assembly 3 to be vacuum-adsorbed on the top surface of the plastic sheet.

[0081] S500: Control the outer suction cup assembly 31 to rise to a preset first position, so that the corners of the plastic sheet are raised to form a curved shape.

[0082] It should be understood that the height of the preset first position can be selected from 10 to 100 mm. Before controlling the outer suction cup assembly 31 to rise to the preset first position, 1 to 2 seconds may be waited.

[0083] S600: The length adjustment mechanism 1 is driven to move upward by the lifting mechanism 2 to drive the adsorbed plastic sheet to rise.

[0084] S700: The lifting mechanism 2 and the length adjustment mechanism 1 are driven to move to a specified position by the translation mechanism 4.

[0085] It should be understood that the designated position is the next station where the plastic sheet needs to be placed. After being placed at the designated position, the suction cup assembly 3 needs to be controlled to perform vacuum release so that the plastic sheet is separated from the suction cup assembly 3.

[0086] The above method controls the outer suction cup assembly 31 to rise by the controller, while the inner suction cup assembly 32 remains unchanged, so that the plastic sheet is formed into a curved shape, so that the grasped plastic sheet is no longer in a tightly fitted state with the plastic sheet below, thereby completely avoiding the hidden danger of two adjacent plastic sheets being fitted together due to negative pressure, and solving the problem of grasping multiple sheets when feeding plastic sheets.

[0087] In some embodiments, the suction cup assembly 3 is vacuum-adsorbed in front of the plastic sheet, and the bottoms of the outer suction cup assembly 31 and the inner suction cup assembly 32 are both located on the same plane;

[0088] After the outer suction cup assembly 31 rises to the preset first position, the bottom of the outer suction cup assembly 31 is 10-100 mm higher than the bottom of the inner suction cup assembly 32 .

[0089] After the outer suction cup assembly 31 rises to the preset first position, the bottom of the outer suction cup assembly 31 is 10-100mm higher than the bottom of the inner suction cup assembly 32, which can not only make the edge of the plastic sheet warp up to no longer form a tight fit with the plastic sheet below, but also prevent the edge from being damaged due to excessive warping.

[0090] In some embodiments, after controlling the suction cup assembly 3 to vacuum adsorb on the top surface of the plastic sheet, the method further includes:

[0091] Point the nozzle of the air blowing nozzle toward the plastic sheet;

[0092] The compressed air supply device is controlled to start to blow the plastic sheet.

[0093] It should be understood that the compressed air supply device is used to provide compressed air with stable air pressure; the blowing nozzle can adjust and control the direction, flow rate and pressure of the blowing compressed air to adapt to plates of different sizes, materials and stacking heights, thereby ensuring the optimization of the blowing effect.

[0094] By blowing the plastic sheet, not only can dust, debris and other impurities on the surface of the sheet be removed, improving the adsorption effect and processing quality, but also to a certain extent, it can reduce the wear on the surface of the plastic sheet caused by friction of impurities, further improving the protection effect of the plastic sheet. At the same time, the precise adsorption and handling process also helps to prevent the plastic sheet from being accidentally collided and damaged during the loading process.

[0095] It can be seen from the above technical solutions that the embodiment of the present application provides a plastic sheet feeding system and method for a refrigerator cabinet, wherein the plastic sheet feeding system for a refrigerator cabinet comprises: a controller, a length adjustment mechanism 1, a lifting mechanism 2, a translation mechanism 4 and a suction cup assembly 3; the suction cup assembly 3 is arranged at the bottom of the length adjustment mechanism 1 for adsorbing the plastic sheet; the length adjustment mechanism 1 is arranged at the bottom of the lifting mechanism 2 for adjusting the overall length of the suction cup assembly 3 to adapt to plastic sheets of different sizes; one side of the lifting mechanism 2 is connected to the translation mechanism 4, and the lifting mechanism 2 is used to make the length adjustment mechanism 1 Move in the vertical direction; the translation mechanism 4 is used to make the lifting mechanism 2 move in the preset horizontal direction; the controller is electrically connected to the length adjustment mechanism 1, the lifting mechanism 2, the translation mechanism 4 and the suction cup assembly 3 respectively; the suction cup assembly 3 includes an outer suction cup assembly 31 and an inner suction cup assembly 32; the outer suction cup assembly 31 is arranged on the outer side of the bottom plane of the length adjustment mechanism 1, and is used for vacuum adsorption of the outer side of the plastic sheet and adjustment of the height of the edge of the plastic sheet; the inner suction cup assembly 32 is arranged on the inner side of the bottom plane of the length adjustment mechanism 1, and is used for vacuum adsorption of the inner side of the plastic sheet. To solve the problem of grabbing multiple sheets when feeding plastic sheets.

[0096] Similar parts between the embodiments provided in this application can be referenced to each other. The specific implementation methods provided above are only a few examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other implementation methods expanded based on the scheme of this application without creative work belong to the protection scope of this application.

Claims

1. A plastic sheet feeding system for refrigerator cabinets, characterized in that: include: A controller, a length adjustment mechanism (1), a lifting mechanism (2), a translation mechanism (4), and a suction cup assembly (3); The suction cup assembly (3) is arranged at the bottom of the length adjustment mechanism (1) and is used to absorb the plastic sheet; the length adjustment mechanism (1) is arranged at the bottom of the lifting mechanism (2) and is used to adjust the overall length of the suction cup assembly (3) to adapt to plastic sheets of different sizes; one side of the lifting mechanism (2) is connected to the translation mechanism (4), and the lifting mechanism (2) is used to move the length adjustment mechanism (1) in a vertical direction; the translation mechanism (4) is used to move the lifting mechanism (2) in a preset horizontal direction; the controller is electrically connected to the length adjustment mechanism (1), the lifting mechanism (2), the translation mechanism (4) and the suction cup assembly (3) respectively; The suction cup assembly (3) comprises an outer suction cup assembly (31) and an inner suction cup assembly (32); the outer suction cup assembly (31) is arranged on the outer side of the bottom plane of the length adjustment mechanism (1) and is used for vacuum adsorbing the outer side of the plastic sheet and adjusting the upward height of the edge of the plastic sheet; the inner suction cup assembly (32) is arranged on the inner side of the bottom plane of the length adjustment mechanism (1) and is used for vacuum adsorbing the inner side of the plastic sheet.

2. The plastic sheet material feeding system for refrigerator cabinets according to claim 1, characterized in that: Also includes a plurality of blowing components (5); The blowing assembly (5) is arranged at the edge of the bottom plane of the length adjustment mechanism (1), and the blowing assembly (5) comprises a compressed air supply device and a blowing nozzle; the compressed air supply device is connected to the blowing nozzle; the controller is electrically connected to the compressed air supply device; the nozzle of the blowing nozzle faces the plastic sheet so as to blow the plastic sheet.

3. The plastic sheet material feeding system for refrigerator cabinet according to claim 1, characterized in that: The outer suction cup assembly (31) comprises four telescopic suction cups, and the four telescopic suction cups are respectively arranged at four corners of the bottom plane of the length adjustment mechanism (1); The telescopic suction cup includes a suction cup, a cylinder and a piston rod; one end of the piston rod is connected to the movable piston inside the cylinder, and the other end of the piston rod is fixedly connected to the cylinder; the cylinder is electrically connected to the controller to drive the suction cup to rise and fall by controlling the extension and retraction of the movable piston.

4. The plastic sheet material feeding system for refrigerator cabinets according to claim 3 is characterized in that: The inner suction cup assembly (32) comprises four fixed suction cups; the fixed suction cups and the telescopic suction cups are evenly arranged on a plane at the bottom of the length adjustment mechanism (1).

5. The plastic sheet material feeding system for refrigerator cabinet according to claim 3, characterized in that: The stroke of the piston rod is 10-100 mm.

6. The plastic sheet material feeding system for refrigerator cabinet according to claim 1, characterized in that: The inner suction cup assembly (32) or the outer suction cup assembly (31) is provided with a vacuum pipeline, a control valve and a vacuum pump; One end of the vacuum pipe is respectively connected to the inner suction cup assembly (32) or the outer suction cup assembly (31), and the control valve is connected to the other end of the vacuum pipe; the output end of the control valve is connected to the input end of the vacuum pump; and the controller is electrically connected to the control valve to control the adsorption and release of the plastic sheet by the inner suction cup assembly (32) or the outer suction cup assembly (31).

7. The plastic sheet material feeding system for refrigerator cabinet according to claim 1, characterized in that: The inner suction cup assembly (32) or the outer suction cup assembly (31) is provided with a vacuum pipeline and a vacuum generator; One end of the vacuum pipe is respectively connected to the inner suction cup assembly (32) or the outer suction cup assembly (31), the vacuum generator is connected to the other end of the vacuum pipe, and the vacuum generator is electrically connected to the controller to control the adsorption and release of the plastic sheet by the inner suction cup assembly (32) or the outer suction cup assembly (31).

8. A method for feeding plastic sheets for refrigerator cabinets, characterized in that: The method for feeding a plastic sheet material for a refrigerator cabinet according to any one of claims 1 to 7 comprises: The lifting mechanism (2) and the length adjustment mechanism (1) are driven by the translation mechanism (4) to move to the top of the plastic sheet to be separated; The position of the suction cup assembly (3) is adjusted by means of a length adjustment mechanism (1) so that the outer suction cup assembly (31) is located above the corner of the top surface of the plastic sheet; The length adjustment mechanism (1) is driven to move downward by the lifting mechanism (2) so that the suction cup assembly (3) contacts the plastic sheet; Controlling the suction cup assembly (3) to vacuum-absorb on the top surface of the plastic sheet; Controlling the outer suction cup assembly (31) to rise to a preset first position so that the corners of the plastic sheet are raised to form a curved shape; The lifting mechanism (2) drives the length adjustment mechanism (1) to move upward, thereby driving the adsorbed plastic sheet to rise; The lifting mechanism (2) and the length adjustment mechanism (1) are driven to move to a specified position by the translation mechanism (4).

9. The method for feeding plastic sheets for refrigerator cabinets according to claim 8, characterized in that: The suction cup assembly (3) is vacuum-adsorbed in front of the plastic sheet, and the bottoms of the outer suction cup assembly (31) and the inner suction cup assembly (32) are both located on the same plane; After the outer suction cup assembly (31) rises to the preset first position, the bottom of the outer suction cup assembly (31) is 10-100 mm higher than the bottom of the inner suction cup assembly (32).

10. The method for feeding plastic sheets for refrigerator cabinets according to claim 8, characterized in that: After controlling the suction cup assembly (3) to vacuum-absorb on the top surface of the plastic sheet, the method further comprises: Point the nozzle of the air blowing nozzle toward the plastic sheet; The compressed air supply device is controlled to start to blow the plastic sheet.

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