A cutting device for diaper production

Abstract

The present invention discloses a cutting device for diaper production, comprising a bottom plate, a first pressing roller, a second pressing roller, a cutting hole, a cutting frame, a pressing plate, a die-cutting knife, a first telescopic mechanism, and a first driving roller. The die-cutting knife is connected below the pressing plate, the pressing plate is provided with a plurality of air outlets in a vertical direction, and the plurality of air outlets are commonly connected to an air source. The first telescopic mechanism is connected to the cutting frame, the pressing plate is connected to the first telescopic mechanism, an opening is provided in the middle of the cutting plate, a first connecting portion is provided below the cutting plate, the first connecting portion is connected to the bottom plate, a groove whose shape is adapted to the die-cutting knife is formed between the cutting plate and the cutting hole, the groove is located directly below the die-cutting knife, the first driving roller is partially located in the opening, and the outer wall of the first driving roller protrudes from the upper surface of the cutting plate; the cutting device for diaper production provided by the present invention can effectively avoid knife sticking. The cutting device for diaper production provided by the present invention belongs to the technical field of diaper cutting equipment and is applied to diaper production lines.

Description

Technical Field

[0001] The present invention relates to the technical field of diaper cutting equipment, and in particular to a cutting device for diaper production. Background Art

[0002] Diapers are a highly absorbent product, which mainly include an inner layer that contacts human skin, a water-absorbent core layer, and an outer layer that prevents leakage. The water-absorbent core layer is located in the middle, and the outer layer is generally a plastic film. The inner and outer layers are bonded together by hot melt adhesive.

[0003] The current production line for diapers mainly includes assembly, cutting, and packaging. After the raw materials are assembled and bonded in the assembly process, the semi-finished diapers are transported along the conveyor rollers into the cutting device. After being cut, they are transported along the conveyor rollers into the packaging device for folding and packaging. In the existing cutting device, cutting is generally achieved by friction between two cooperating die-cutting rollers. However, due to the presence of hot melt adhesive between the inner and outer layers of the diaper, the heat generated by the die-cutting rollers during the continuous cutting process will partially melt the hot melt adhesive and cause the knife to stick. The fiber debris generated during the cutting process cannot be effectively cleaned. After cutting is completed, the finished diapers may be offset when entering the packaging process, resulting in the need to reposition them before they can be successfully packaged by the packaging device. Summary of the Invention

[0004] The purpose of the present invention is to provide a cutting device for diaper production to solve one or more technical problems existing in the prior art and at least provide a beneficial option or create conditions.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0006] First, the present invention provides a cutting device for diaper production, comprising:

[0007] A bottom plate, one side of the bottom plate is connected to a first pressing roller, the other side of the bottom plate is connected to a second pressing roller, the bottom plate is provided with a cutting hole, and the cutting hole is located between the first pressing roller and the second pressing roller;

[0008] a cutting frame, the cutting frame being arranged above the cutting hole and connected to the bottom plate;

[0009] The cutting module includes a pressure plate, a die-cutting knife, and a first telescopic mechanism. The first telescopic mechanism is arranged below the cutting frame and connected to the cutting frame. The pressure plate is connected below the first telescopic mechanism, and the die-cutting knife is fixedly connected below the pressure plate. The pressure plate is provided with a plurality of air outlet holes, and the air outlet holes discharge air downward. The plurality of air outlet holes are connected to an air source in common, and the plurality of air outlet holes are evenly distributed on the inner and outer sides of the die-cutting knife along the contour of the die-cutting knife.

[0010] The outer layer of the semi-finished diaper to be processed is tightly attached to the bottom plate, and under the action of the first pressing roller and the second pressing roller, it moves from the first pressing roller to the second pressing roller and maintains a certain tension during the movement. The shape of the cutting plate is consistent with the unfolded shape of the finished diaper, and the shape of the die-cutting knife is also consistent with the unfolded shape of the diaper. The die-cutting knife is annular as a whole, and the die-cutting knife moves up and down following the pressing plate under the action of the first telescopic mechanism. The first driving roller moves the cut diaper product toward the second pressing roller, and after passing through the second pressing roller, it moves to the subsequent packaging process. The cut waste passes through the second pressing roller to the next processing process, and the cut waste is wound up by the waste winder located above the outside after passing through the second pressing roller, which does not affect the continued transportation of the cut finished diapers.

[0011] When one side of the finished diaper after cutting hits the second pressing roller, the other side of the finished diaper is on the first drive roller and is about to completely leave the first drive roller. The length of the diaper is set to L1, and the distance between the first drive roller and the second pressing roller is set to L2. The value of L1 is not less than L2.

[0012] During cutting, the air source will continue to be output through the air outlet. As the pressing plate moves downward relative to the semi-finished diaper, the distance between the pressing plate and the semi-finished diaper gradually decreases, and the force of the gas on the semi-finished diaper gradually increases. When the die-cutting knife cuts the semi-finished diaper, the force of the gas on the diaper reaches its peak. Then the die-cutting knife begins to rise, and the gas presses the cut finished diaper to prevent the outer plastic film from being lifted by the die-cutting knife and affecting the next cut. As the die-cutting knife rises, the pressure of the gas on the cut finished diaper gradually decreases. Compared with the negative pressure adsorption method, by spraying gas downward from the top, the distance between the pressing plate and the diaper to be processed is changed during the cutting process, and the pressure acting on the finished diaper can be changed, which can prevent the semi-finished diaper from being excessively adsorbed.

[0013] Gas is ejected from the air outlet, with some of it being ejected onto the inner wall of the die-cutter. It then moves downward along the inner wall of the die-cutter onto the diaper, pressing the semi-finished diaper tightly while transferring heat generated by the friction between the die-cutter and the pressure plate into the air. This dissipates heat from the die-cutter, preventing the die-cutter from heating up during continuous cutting and melting the hot-melt adhesive in the semi-finished diaper. This helps resolve the issue of hot-melt adhesive sticking to the die during continuous cutting. It also blows fiber fragments and metal powder generated by metal friction during the cutting process toward the bottom of the cutting hole, preventing contamination of the finished diaper. However, the heat carried away by the gas does not melt the hot-melt adhesive between the inner and outer layers of the diaper.

[0014] Furthermore, there is an angle of 30 to 60 degrees between the axis of some of the air outlet holes and the vertical direction, so that the gas ejected from the air outlet holes is sprayed obliquely from the pressure plate to the inner wall of the die-cutting knife, and pressed downward along the inner wall of the die-cutting knife.

[0015] As an extension of the above solution, the pressure plate includes a first upper cover and a first lower plate located relatively below the first upper cover. The air outlet is located on the first lower plate. A second connecting portion is provided at the top of the first upper cover, and the second connecting portion is connected to the first telescopic mechanism. A cavity is enclosed between the first upper cover and the first lower plate. An air inlet is provided at the center of the top of the first upper cover, and the air inlet is connected to the air source, and the air inlet is in communication with the cavity. This arrangement allows the gas output from the air source to first be dispersed and buffered through the cavity before being ejected from the air outlets, facilitating uniform air output.

[0016] As an extension of the above scheme, a semiconductor refrigeration plate is provided at the intersection of the outer wall of the die-cutting knife and the first lower plate. The cold end of the semiconductor refrigeration plate is in contact with the outer wall of the die-cutting knife, the upper part of the cold end of the semiconductor refrigeration plate is connected to the first lower plate, and the hot end of the semiconductor refrigeration plate is provided between the air outlet and the outer wall of the die-cutting knife.

[0017] Adhering the cooling side of the semiconductor refrigeration sheet to the outer ring of the die-cutting knife can further reduce the temperature of the die-cutting knife during operation, avoiding the temperature increase of the die-cutting knife due to repeated friction, and avoiding the sticking of the knife due to partial melting of the hot melt adhesive. In addition, since the semiconductor refrigeration sheet is also partially in contact with the first lower plate, the semiconductor refrigeration sheet will also cool the pressing plate, so that the temperature of the gas passing through the pressing plate is also reduced, further enhancing the heat dissipation effect on the die-cutting knife. The heat generated by the hot end of the semiconductor refrigeration sheet is transferred to the air by the gas ejected from the air outlet, which is not enough to melt the hot melt adhesive, nor can it affect the diaper located on the inner ring of the die-cutting knife.

[0018] As an extension of the above solution, a first buckle is provided on the outer wall of the pressing plate, which is helpful for fixing the power cord of the semiconductor cooling plate.

[0019] As an extension of the above solution, a cutting device for diaper production further includes a cutting plate, the cutting plate being located in the middle of the cutting hole, the upper surface of the cutting plate being flush with the bottom plate, the cutting plate being provided with a first connecting portion connected to the bottom plate, the cutting plate being located directly below the die cutter, the shape of the cutting plate being adapted to the shape of the inner wall of the die cutter, the cutting plate being provided with a drive roller hole, the first connecting portion being provided below the drive roller hole;

[0020] a first driving roller, the first driving roller being disposed below the driving roller hole and connected to the first connecting portion, the axis of the first driving roller being parallel to the axis of the first pressing roller, and the first driving roller partially protruding from the driving roller hole;

[0021] The first telescopic mechanism causes the pressing plate to reciprocate up and down, so that the die-cutting knife cooperates with the cutting plate to cut the semi-finished diapers.

[0022] The outer surface of the first drive roller is wrapped with a silicone sleeve. Since the outer layer of diapers is generally made of impermeable plastic, the gas ejected from the air outlet increases the friction between the plastic layer of the semi-finished diaper and the first drive roller, which helps the cut finished diapers continue to move under the action of the first drive roller. It also ensures that the semi-finished diaper adheres closely to the first drive roller during the cutting process, preventing displacement and thus preventing defects such as jagged edges or uneven cut edges in the finished diapers caused by displacement during cutting.

[0023] The first and second pressure rollers are also covered with silicone sleeves to increase friction between them and the diapers during transport, ensuring that both semi-finished and finished diapers remain stable during transport. After exiting the second pressure roller, the finished diapers, cut in this process, are smoothly transported to the next process under the action of the second pressure roller.

[0024] In this solution, the inner wall of the die-cutting knife is arranged to fit closely with the edge of the cutting plate to reduce the distance between the inner wall of the die-cutting knife and the cutting plate, thereby preventing the outer plastic film of the diaper from having more space to move downward when the die-cutting knife is pressed down, thereby avoiding uneven cutting edges of the outer plastic film, and applying air pressure to the edge to be cut to reduce the probability of the outer plastic film extending downward. At the same time, since the first driving roller is present in the area corresponding to the middle part of the die-cutting knife below the diaper to be cut, there is friction between the surface of the first driving roller and the outer plastic film of the diaper to be cut, so the air outlet is not provided in the middle area of the pressing plate, and the air flow turbulence caused by the provision of too many air outlets is avoided, so that the debris produced by cutting is blown away.

[0025] As an extension of the above solution, the first connecting portion includes a first connecting post and a second connecting post. The first connecting post is connected to the base plate, one end of the second connecting post is connected to the cutting plate, and the other end of the second connecting post is connected to the first connecting post. The first driving roller is connected to the second connecting post. This arrangement simplifies the connection structure between the cutting plate and the base plate. Since the die-cutting knife can only extend a limited distance below the cutting plate, providing the first connecting portion below the cutting plate can fully utilize the space below the base plate.

[0026] As an extension of the above solution, a cutting device for diaper production also includes a second telescopic mechanism, which is arranged between the first connecting column and the second connecting column, and the first connecting column is connected to the second connecting column through the second telescopic mechanism.

[0027] By providing the second telescopic mechanism between the first and second connecting posts, the height difference between the cutting board surface and the bottom plate surface can be quickly adjusted, making equipment installation and commissioning faster. Furthermore, a third telescopic mechanism can be provided between the first drive roller and the second connecting post to quickly adjust the distance between the outer wall surface of the first drive roller and the cutting board surface.

[0028] As an extension of the above solution, a cutting device for diaper production also includes a first rotating device and a robot. The first rotating device is arranged on the top of the cutting frame, and an image recognition sensor and a temperature detection sensor are connected below the robot. The robot is connected to the first rotating device.

[0029] By setting up an image recognition sensor, images of the edges of the cut finished diapers can be collected, and the data collected by the image recognition sensor can be transmitted back to the connected industrial computer. The detection system on the industrial computer compares the returned data with the preset data. If there are obvious protrusions or gaps in the image of the edge of the diaper collected, the detection system will determine that the cutting quality does not meet the standards, and output a signal to control the movement of the robot arm, so that the robot arm can clamp the cut finished diapers, move upward and then rotate to the outside of the bottom plate, remove the finished diapers that do not meet the quality standards, and then reset them, so that the waste removal process is completed during the cutting process.

[0030] On the other hand, the absorbent core will deteriorate due to absorbing too much moisture in the air. After deterioration, the temperature change in this area will be lower than normal. The temperature detection sensor is also connected to the industrial computer. The temperature detection sensor is used to collect the surface temperature of the area corresponding to the absorbent core on the diaper. After the cut diapers are transmitted from the cutting area, they pass through the temperature detection sensor. The temperature detection sensor transmits the signal back to the detection system. When there is an error between the detected temperature and the preset temperature, such as the detected temperature is more than 0.5 degrees Celsius lower than the preset temperature, a signal will be output to control the robot to remove the cut diapers with quality problems.

[0031] As an extension of the above solution, the manipulator includes a first arm arranged in the horizontal direction and a second arm arranged in the vertical direction, the second arm is provided with a telescopic arm movable in the vertical direction, the lower end of the telescopic arm is connected to a clamping claw, the left end of the first arm is connected to the first rotating device, the right end of the first arm is connected to the second arm, the second arm is located to the right of the second pressure roller, the image recognition sensor and the temperature detection sensor are connected below the first arm, and the image recognition sensor is located to the right of the temperature detection sensor. The structure of this manipulator is relatively simple, and the image recognition sensor and the temperature detection sensor are connected to the first arm, especially the image recognition sensor and the temperature detection sensor are connected below the first arm, and the image recognition sensor is located to the right of the temperature detection sensor, which can shorten the collection distance. The waste rejection mechanism provided on the cutting device can compress the production stations of the production line.

[0032] During the process of removing finished diapers that do not meet the quality standards, the detection system will obtain the status of the robot 800. When the status of the robot 800 is not reset, the cutting work and the movement of the first drive roller will be suspended. After the robot 800 is reset, it will be restarted and continue to operate to ensure the production quality of the finished diapers.

[0033] As an extension of the above solution, with the second pinch roller positioned on the left relative to the center, a positioning baffle is provided on the right side of the second pinch roller, connected to the bottom plate. Since the cut diapers will enter the packaging process after passing through the second pinch roller, the positioning baffle on the right side of the second pinch roller can correct the orientation of the cut diapers after exiting the second pinch roller, preventing positional deviations before entering the packaging process, which could affect subsequent processes.

[0034] The cutting device for diaper production provided by the present invention reduces the distance between the inner wall of the die-cutting knife and the cutting plate, performs gas cooling treatment on the die-cutting knife, and uses gas to position the semi-finished diapers to be processed, thereby enhancing the cutting effect and effectively preventing the knife from sticking. After cutting, the finished diapers can be transported to the next packaging link in an orderly manner and can be rejected in the cutting link, which can shorten the length of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0036] Figure 1 is a schematic diagram of a cutting device for diaper production provided by the present invention;

[0037] Figure 2 This is a partial bottom view of the cutting device for diaper production provided by the present invention;

[0038] Figure 3 This is a partial schematic diagram of a cutting device for diaper production provided by the present invention;

[0039] Figure 4 This is an overall schematic diagram of the cutting device for diaper production provided by the present invention;

[0040] Figure 5 is a schematic diagram of a first connecting portion provided in an embodiment;

[0041] Figure 6 It is a partial cross-sectional view of the cutting module provided in the embodiment.

[0042] In the accompanying drawings: 100, bottom plate, 101, first pressing roller, 102, second pressing roller, 103, cutting hole, 104, storage box, 200, cutting frame, 300, cutting module, 301, pressing plate, 3011, first upper cover, 3012, first lower plate, 3013, second connecting part, 3014, first buckle, 3015, first upper cover plate, 3016, upper cover sheet, 302, die cutting knife, 303, first telescopic mechanism, 304, air outlet, 305, air inlet, 400, cutting Cutting plate, 401, first connecting part, 4011, first connecting column, 4012, second connecting column, 4013, second telescopic mechanism, 4014, third telescopic mechanism, 500, first driving roller, 501, driving roller hole, 600, semiconductor cooling plate, 700, first rotating device, 800, manipulator, 801, first arm, 802, second arm, 803, telescopic arm, 804, clamping claw, 900, image recognition sensor, 901, temperature detection sensor, 902, positioning baffle. DETAILED DESCRIPTION

[0043] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0045] In the description of the present invention, if there are words such as "several", it means one or more, and "more" means more than two. Greater than, less than, and exceed are understood as not including the number itself, and above, below, and within are understood as including the number itself.

[0046] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0047] Reference Figures 1 to 6 , several embodiments of the cutting device for diaper production of the present invention are given below.

[0048] like Figures 1 to 5 As shown, a cutting device for diaper production includes:

[0049] A bottom plate 100, with a first pressing roller 101 connected to one side of the bottom plate 100 and a second pressing roller 102 connected to the other side of the bottom plate 100. The bottom plate 100 is provided with a cutting hole 103, and the cutting hole 103 is located between the first pressing roller 101 and the second pressing roller 102;

[0050] A cutting frame 200 , which is disposed between the first pressing roller 101 and the second pressing roller 102 and connected to the bottom plate 100 ;

[0051] The cutting module 300 includes a pressure plate 301, a die-cutting knife 302, and a first telescopic mechanism 303. The first telescopic mechanism 303 is arranged below the cutting frame 200 and is connected to the cutting frame 200. The pressure plate 301 is connected below the first telescopic mechanism 303. The die-cutting knife 302 is fixedly connected below the pressure plate 301. The pressure plate 301 is provided with a plurality of air outlet holes 304. The air outlet holes 304 discharge air downward. The plurality of air outlet holes 304 are connected to an air source in common. The plurality of air outlet holes 304 are evenly distributed on the inner and outer sides of the die-cutting knife 302 along the contour of the die-cutting knife 302.

[0052] A cutting board 400 is provided with an opening. A first connecting portion 401 is provided below the cutting board 400. The first connecting portion 401 is connected to the bottom plate 100. The cutting board 400 is located directly below the die cutter 302. The shape of the cutting board 400 is adapted to the inner wall of the die cutter 302. There are two openings, which are symmetrically arranged at both ends of the cutting board in the left and right directions.

[0053] The first driving roller 500 is connected to the first connecting portion 401, the axis of the first driving roller 500 is parallel to the axis of the first pressing roller 101, the first driving roller 500 is partially located in the opening, and the outer wall of the first driving roller 500 protrudes from the upper surface of the cutting plate 400, and the number of the first driving rollers 500 is 2.

[0054] The positioning baffle 902 is provided on the right side of the second pressing roller 102 with the second pressing roller 102 being located on the relatively left side. The positioning baffle 902 is connected to the bottom plate 100 .

[0055] To ensure more uniform gas output, the pressing plate 301 includes a first upper cover 3011 and a first lower plate 3012. The first lower plate 3012 is located relatively below the first upper cover 3011. The gas outlet 304 is located on the first lower plate 3012. A second connecting portion 3013 is provided at the top of the first upper cover 3011, which is connected to the first telescopic mechanism 303. A cavity is enclosed between the first upper cover 3011 and the first lower plate 3012. An air inlet 305 is provided at the center of the top of the first upper cover 3011. The air inlet 305 is connected to the gas source and communicates with the cavity. This arrangement allows the gas output from the gas source to be dispersed and buffered by the cavity before being ejected from the gas outlets, facilitating uniform gas output.

[0056] like Figure 6 As shown, in order to make the processing of the pressure plate 301 easier, the first upper cover 3011 can be provided to include a first upper cover plate 3015 and an upper cover flap 3016. The first upper cover plate 3015 is provided with a first annular groove, and the first annular groove has a built-in sealing ring. The first lower plate 3012 is also provided with the first annular groove. During installation, the upper cover flap 3016 is simultaneously inserted into the first annular grooves on the first upper cover plate 3015 and the first lower plate 3012, and then fixed by means of bolt locking or welding.

[0057] The semi-finished diaper moves from the first pressing roller 101 to the second pressing roller 102 under the action of the first pressing roller 101 and the second pressing roller 102, and maintains a certain tension during the movement. The shape of the cutting plate 400 is consistent with the unfolded shape of the finished diaper, and the shape of the die-cutting knife 302 is also consistent with the unfolded shape of the diaper. The die-cutting knife 302 is annular as a whole. The die-cutting knife 302 follows the pressing plate 301 and moves up and down under the action of the first telescopic mechanism 303, constantly repeating the action of entering and exiting the cutting hole 103. When the die-cutting knife 302 enters the cutting hole, the inner wall of the die-cutting knife 302 fits tightly with the outer wall of the cutting plate 400 to cut the semi-finished diaper passing through the interval to obtain a finished diaper. During cutting, the pressing plate 301 moves downward but does not contact the bottom plate 100.

[0058] The first drive roller 500 moves the cut diapers toward the second pressure roller 102. After passing through the second pressure roller 102, the finished diapers are moved to the subsequent packaging process. The cut waste passes through the second pressure roller 102 and is then wound up by a waste winder located above the outside, without affecting the continued conveyance of the cut diapers. It should be noted that when one side of the cut finished diaper hits the second pressure roller 102, the other side of the finished diaper is on the first drive roller 500 and is about to completely leave the first drive roller 500. Assuming the length of the diaper is L1, the distance between the first drive roller 500 and the second pressure roller 102 is L2, and the value of L1 is not less than L2.

[0059] The outer surface of the first drive roller 500 is wrapped with a silicone sleeve. Since the outer layer of diapers is generally made of a waterproof plastic film, the gas ejected from the air outlet increases the friction between the plastic layer of the semi-finished diaper and the first drive roller 500, facilitating the continued movement of the cut finished diaper under the action of the first drive roller 500. Furthermore, the semi-finished diaper can be kept in close contact with the first drive roller 500 during the cutting process, preventing displacement and thus preventing defects such as jagged edges or uneven cut edges in the finished diaper caused by displacement during cutting.

[0060] During cutting, air is continuously output through the air outlet 304. As the pressing plate 301 moves downward relative to the semi-finished diaper, the distance between the pressing plate 301 and the semi-finished diaper gradually decreases, causing the force of the air on the semi-finished diaper to gradually increase. When the die-cutter 302 cuts the semi-finished diaper, the force of the air on the diaper reaches its peak. The die-cutter 302 then begins to rise, pressing the cut diaper against the finished diaper, preventing the plastic film from being lifted by the die-cutter 302 and affecting the next cut. As the die-cutter 302 rises, the pressure of the air on the cut diaper gradually decreases. Compared to the negative pressure adsorption method, by injecting air downward from above and changing the distance between the pressing plate 301 and the diaper to be processed during the cutting process, the variable pressure on the finished diaper can prevent the semi-finished diaper from being excessively adsorbed.

[0061] As gas is ejected from the air outlet from top to bottom, some of the gas is ejected onto the inner wall of the die cutter 302 and acts downward along the inner wall of the die cutter 302 onto the diaper, pressing the semi-finished diaper tightly while transferring heat generated by the friction between the die cutter 302 and the cutting plate 400 into the air. This dissipates heat from the die cutter 302, preventing the die cutter 302 from heating up during continuous cutting and melting the hot melt adhesive between the inner and outer layers of the semi-finished diaper. This helps solve the problem of hot melt adhesive sticking to the die cutter during continuous cutting. It also blows fiber fragments and metal powder generated by metal friction during the cutting process toward the bottom of the cutting hole, preventing contamination of the finished diaper. However, the heat carried away by the gas does not melt the hot melt adhesive between the inner and outer layers of the diaper.

[0062] During cutting, the semi-finished diaper is most likely to shift at the moment the die-cutter 302 is pressed downward. At this moment, the edge of the semi-finished diaper to be cut is subjected to the greatest force, and the outer plastic film of the diaper is also most likely to stick to the knife. By applying air pressure to the edge to be cut, the probability of the outer plastic film extending downward is reduced. Furthermore, because the first drive roller 500 is located in the area below the diaper to be cut corresponding to the middle of the die-cutter 302, friction between the surface of the first drive roller 500 and the outer plastic film to be cut is generated. Therefore, the air vents are not provided in the middle area of the pressing plate 301 to avoid drilling too many holes in the first lower plate 3012 and to avoid air flow turbulence caused by the provision of too many air vents, which could cause debris produced by cutting to be blown away.

[0063] At the same time, the first pressing roller 101 and the second pressing roller 102 are also wrapped with a silicone sleeve to increase the friction of the first pressing roller 101 and the second pressing roller 102 on the diapers during the transmission process, so that the semi-finished diapers and the finished diapers will not shift during the transmission process. After coming out of the second pressing roller 102, the finished diapers cut in this process can be smoothly transferred to the next process under the action of the second pressing roller 102. Furthermore, there is an angle of 30 to 60 degrees between the axis of some of the air outlet holes 304 and the vertical direction, so that the gas ejected from the air outlet holes 304 is ejected obliquely from the pressing plate 301 to the inner wall of the die-cutting knife 302, and pressed downward along the inner wall of the die-cutting knife 302.

[0064] The fiber fragments or metal powders blown downward by the gas will be blown into the storage box 104 to avoid secondary pollution. Preferably, a Velcro can be connected below the cutting hole 103 to adhere the filter bag, so that the filter bag can be quickly cleaned.

[0065] In some embodiments, a semiconductor refrigeration plate 600 is provided at the intersection of the outer wall of the die-cutting knife 302 and the first lower plate 3012, the cold end of the semiconductor refrigeration plate 600 is in contact with the outer wall of the die-cutting knife 302, the upper part of the cold end of the semiconductor refrigeration plate 600 is connected to the first lower plate 3012, and the hot end of the semiconductor refrigeration plate 600 is provided between the air outlet 304 and the outer wall of the die-cutting knife 302.

[0066] The cooling side of the semiconductor refrigeration sheet 600 is adhered to the outer ring of the die-cutting knife 302, which can further reduce the temperature of the die-cutting knife 302 during operation, avoiding the temperature increase of the die-cutting knife 302 due to repeated friction, and avoiding the sticking of the knife due to local melting of the hot melt adhesive. In addition, since the semiconductor refrigeration sheet 600 is also partially in contact with the first lower plate 3012, the semiconductor refrigeration sheet 600 will also cool the pressing plate 301, so that the temperature of the gas passing through the pressing plate 301 is also reduced, further enhancing the heat dissipation effect on the die-cutting knife 302. Since the gas coming out of the air outlet 304 is oblique, when the gas is sprayed onto the heat sink fins of the hot end of the semiconductor refrigeration plate 600, the heat is dissipated to the heat sink fins and the heat is transferred to the air. After the heat generated by the hot end of the semiconductor refrigeration plate 600 is transferred to the air by the gas sprayed from the air outlet 304, it is not enough to melt the hot melt adhesive. The finished diapers that need to be retained are located in the inner circle of the die-cutting knife 302, and the heat generated by the semiconductor refrigeration plate 600 will not affect the cut finished diapers.

[0067] There are four semiconductor cooling sheets 600 , which are respectively placed at the four corners of the outer circle of the die-cutting knife 302 to evenly dissipate heat for the die-cutting knife 302 .

[0068] Furthermore, the outer wall of the pressing plate 301 is provided with a first clip 3014. The addition of the first clip 3014 facilitates securing the power cord of the semiconductor refrigeration chip 600. Multiple first clips 3014 are provided on the first lower plate 3012, the upper cover plate 3016, and the first upper cover plate 3015, respectively, so that the power cord of the semiconductor refrigeration chip 600 is arranged along the outer wall of the pressing plate from the bottom of the pressing plate to the center of the top of the pressing plate. The optimal arrangement is one in which the distance from the power cord of the semiconductor refrigeration chip 600 to the center of the top of the pressing plate is minimized. The power cords of multiple semiconductor refrigeration chips 600 are arranged in the same manner.

[0069] The first buckle 3014 has a buckle base plate in contact with the pressure plate and a buckle body connected to the power cord of the semiconductor refrigeration plate 600. The buckle base plate and the buckle body are integrally formed. The buckle body is in the shape of a circular tube to allow the power cord to pass through. It has a buckle opening with the axis extension direction of the buckle body as the front-to-back direction. The buckle base plate is located on the right side of the buckle body, and the buckle opening is located on the lower side of the buckle body. The buckle opening is vertically downward, and the opening angle of the buckle opening is 30 degrees. The buckle base plate is glued to the pressure plate to facilitate the installation and fixation of the power cord.

[0070] Since the existing diaper production line includes multiple workstations, in order to shorten the length of the production line and save production space, one workstation can be set up to realize multiple functions. In some embodiments, a cutting device for diaper production also includes a waste rejection function, specifically, including a first rotating device 700 and a manipulator 800. The first rotating device 700 is arranged on the top of the cutting frame 200, and the image recognition sensor 900 and the temperature detection sensor 901 are connected to the bottom of the manipulator 800. The manipulator 800 is connected to the first rotating device 700.

[0071] The manipulator 800 includes a first arm 801 arranged in the horizontal direction and a second arm 802 arranged in the vertical direction. The second arm 802 is provided with a telescopic arm 803 that can move along the vertical direction. The lower end of the telescopic arm 803 is connected to a clamping claw 804. The left end of the first arm 801 is connected to the first rotating device 700, and the right end of the first arm 801 is connected to the second arm 802. The second arm 802 is located on the right side of the second pressure roller 102. The image recognition sensor 900 and the temperature detection sensor 901 are connected below the first arm 801. The image recognition sensor 900 is arranged on the right side of the temperature detection sensor 901.

[0072] By setting up the image recognition sensor 900, the image of the edge of the cut finished diaper can be collected, and the data collected by the image recognition sensor 900 is transmitted back to the connected industrial computer. The detection system on the industrial computer compares the returned data with the preset data. If there are obvious protrusions or gaps in the image of the edge of the diaper collected, the detection system will determine that the cutting quality is not up to standard, and output a signal to control the movement of the robot 800, so that the robot 800 can clamp the cut finished diaper, move upward and then rotate to the outside of the bottom plate, remove the finished diapers that do not meet the quality standards, and then reset them, so that the waste removal process is completed during the cutting process.

[0073] On the other hand, the absorbent core will absorb too much moisture from the air and deteriorate. After deterioration, the temperature change in this area will be lower than normal. The temperature detection sensor 901 is also connected to the industrial computer. The temperature detection sensor 901 is used to collect the surface temperature of the area corresponding to the absorbent core on the diaper. After the cut diapers are transferred from the cutting area, they pass through the temperature detection sensor 901. The temperature detection sensor 901 transmits the collected data back to the detection system. If there is a difference between the detected temperature and the preset temperature, such as the detected temperature is more than 0.5 degrees Celsius lower than the preset temperature, the output signal controls the robot 800 to remove the cut diapers with quality problems. The image recognition sensor 900 is located to the right of the temperature detection sensor 901 to shorten the collection distance.

[0074] In the process of removing finished diapers that do not meet the quality standards in the above embodiment, the detection system will obtain the status of the robot 800. When the status of the robot 800 is not reset, the cutting work and the movement of the first drive roller are suspended. After the robot 800 is reset, it will be restarted and continue to operate to ensure the production quality of the finished diapers.

[0075] like Figure 5 As shown, in some embodiments, to simplify the device structure and facilitate installation and debugging, the first connecting portion 401 includes a first connecting post 4011 and a second connecting post 4012. The first connecting post 4011 is connected to the base plate 100, one end of the second connecting post 4012 is connected to the cutting board 400, and the other end of the second connecting post 4012 is connected to the first connecting post 4011. The first driving roller 500 is connected to the second connecting post 4012. This arrangement simplifies the connection structure between the cutting board 400 and the base plate 100. Since the die cutter 302 extends below the cutting board 400, disposing the first connecting portion 401 below the cutting board 400 can fully utilize the space below the base plate 100, eliminating the need for a fixing mechanism above the base plate 100 to secure the cutting board 400.

[0076] A second telescopic mechanism 4013 is also provided between the first connecting post 4011 and the second connecting post 4012, connecting the first connecting post 4011 and the second connecting post 4012, respectively. By providing the second telescopic mechanism 4013 between the first connecting post 4011 and the second connecting post 4012, the height difference between the surface of the cutting board 400 and the surface of the base plate 100 can be quickly adjusted, facilitating faster installation and commissioning of the equipment. Furthermore, a third telescopic mechanism 4014 is provided between the first drive roller 500 and the second connecting post 4012, enabling quick adjustment of the distance between the outer surface of the first drive roller 500 and the surface of the cutting board 400.

[0077] The above specifically describes the preferred embodiments of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A cutting device for diaper production, characterized in that: include: A bottom plate (100), wherein one side of the bottom plate (100) is connected to a first pressing roller (101), and the other side of the bottom plate (100) is connected to a second pressing roller (102), and the bottom plate (100) is provided with a cutting hole (103), and the cutting hole (103) is located between the first pressing roller (101) and the second pressing roller (102); a cutting frame (200), the cutting frame (200) being arranged above the cutting hole (103) and connected to the bottom plate (100); A cutting module (300), the cutting module (300) comprising a pressing plate (301), a die-cutting knife (302), and a first telescopic mechanism (303), the first telescopic mechanism (303) being arranged below the cutting frame (200) and connected to the cutting frame (200), the pressing plate (301) being connected below the first telescopic mechanism (303), the die-cutting knife (302) being fixedly connected below the pressing plate (301), the pressing plate (301) being provided with a plurality of air outlet holes (304), the air outlet holes (304) being arranged to discharge air downward, the plurality of air outlet holes (304) being connected to an air source in common, and the plurality of air outlet holes (304) being evenly distributed on the inner and outer sides of the die-cutting knife (302) along the contour of the die-cutting knife (302); a cutting plate (400), the cutting plate (400) being located in the middle of the cutting hole (103), the upper surface of the cutting plate (400) being flush with the bottom plate (100), the cutting plate (400) being provided with a first connecting portion (401), the first connecting portion (401) being connected to the bottom plate (100), the cutting plate (400) being located directly below the die-cutting knife (302), the shape of the cutting plate (400) being adapted to the shape of the inner wall of the die-cutting knife (302), the cutting plate (400) being provided with a driving roller hole (501), the first connecting portion (401) being arranged below the driving roller hole (501); a first driving roller (500), the first driving roller (500) being arranged below the driving roller hole (501) and connected to the first connecting portion (401), the axis of the first driving roller (500) being parallel to the axis of the first pressing roller (101), and a portion of the first driving roller (500) protruding from the driving roller hole (501); The first telescopic mechanism (303) causes the pressing plate (301) to reciprocate up and down, allowing the die-cutting knife (302) to cooperate with the cutting plate (400) to cut the semi-finished diaper.

2. The cutting device for diaper production according to claim 1, characterized in that: The pressing plate (301) comprises a first upper cover (3011) and a first lower plate (3012) arranged relatively below the first upper cover (3011); the air outlet (304) is arranged on the first lower plate (3012); a second connecting portion (3013) is provided on the top of the first upper cover (3011); the second connecting portion (3013) is connected to the first telescopic mechanism (303); a cavity is enclosed between the first upper cover (3011) and the first lower plate (3012); an air inlet (305) is provided in the center of the top of the first upper cover (3011); the air inlet (305) is connected to an air source, and the air inlet (305) is in communication with the cavity.

3. The cutting device for diaper production according to claim 2, characterized in that: A semiconductor cooling plate (600) is provided at the intersection of the outer wall of the die-cutting knife (302) and the first lower plate (3012); the cold end of the semiconductor cooling plate (600) is in contact with the outer wall of the die-cutting knife (302); the upper part of the cold end of the semiconductor cooling plate (600) is connected to the first lower plate (3012); and the hot end of the semiconductor cooling plate (600) is provided between the air outlet (304) and the outer wall of the die-cutting knife (302).

4. The cutting device for diaper production according to claim 3, characterized in that: The outer wall of the pressing plate (301) is provided with a first buckle (3014).

5. The cutting device for diaper production according to claim 1, characterized in that: The first connecting portion (401) includes a first connecting column (4011) and a second connecting column (4012), wherein the first connecting column (4011) is connected to the base plate (100), one end of the second connecting column (4012) is connected to the cutting plate (400), and the other end of the second connecting column (4012) is connected to the first connecting column (4011), and the first driving roller (500) is connected to the second connecting column (4012).

6. The cutting device for diaper production according to claim 5, characterized in that: The invention also includes a second telescopic mechanism (4013), wherein the second telescopic mechanism (4013) is arranged between the first connecting column (4011) and the second connecting column (4012), and the first connecting column (4011) is connected to the second connecting column (4012) through the second telescopic mechanism.

7. The cutting device for diaper production according to claim 1, characterized in that: The invention also includes a first rotating device (700) and a manipulator (800), wherein the first rotating device (700) is arranged on the top of the cutting frame (200), an image recognition sensor (900) and a temperature detection sensor (901) are connected to the manipulator (800), and the manipulator (800) is connected to the first rotating device (700).

8. The cutting device for diaper production according to claim 7, characterized in that: The manipulator (800) includes a first arm (801) arranged in the horizontal direction and a second arm (802) arranged in the vertical direction. The second arm (802) is provided with a telescopic arm (803) movable in the vertical direction. The lower end of the telescopic arm (803) is connected to a clamping claw (804). The left end of the first arm (801) is connected to the first rotating device (700), and the right end of the first arm (801) is connected to the second arm (802). The second arm (802) is located on the right side of the second pressing roller (102). The image recognition sensor (900) and the temperature detection sensor (901) are connected below the first arm (801).

9. The cutting device for diaper production according to claim 1, characterized in that: With the position of the second pressing roller (102) as the relatively left side, a positioning baffle (902) is provided on the right side of the second pressing roller (102), and the positioning baffle (902) is connected to the bottom plate (100).

Images