A cardboard box cutting mechanism

Abstract

This invention relates to a carton cutting mechanism, comprising two columns, a mounting rod, a pressing plate, and a receiving plate. Two driving cylinders are vertically mounted on the mounting rod, and the piston rods of both cylinders are connected to the top of the pressing plate. Two pressing blocks are located at the bottom of the pressing plate, and a cutting mechanism is mounted on the pressing plate between the two pressing blocks. The bottom of the cutting mechanism is positioned higher than the bottom of the pressing blocks. In this application, the pressing plate moves downward using the driving cylinders, simultaneously driving the cutting mechanism on the pressing plate to move downward. When the pressing blocks abut against and press against the carton, the cutting mechanism and the carton are still in a non-contact state. That is, the carton is first pressed, and then the laser cutting unit performs the cutting operation. This single step achieves both the pressing of the carton and the approach of the cutting mechanism to the carton, avoiding the need for other driving mechanisms to drive the cutting mechanism after pressing the carton, saving time and effort, and improving the cutting efficiency of the carton.

Description

Technical Field

[0001] This invention relates to the field of machinery, and more particularly to a carton cutting mechanism. Background Technology

[0002] Cardboard boxes are the most widely used packaging products. Depending on the materials used, there are corrugated cardboard boxes, single-layer cardboard boxes, and various specifications and models. During the production process, cardboard boxes need to be cut according to the different dimensions of the products to be packaged, in order to achieve the goal of packaging the product effectively without excessive waste of cardboard. In existing cardboard box production processes, the cardboard box is first compressed, then a cutting mechanism is driven close to the box, and finally the box is cut. The reaction time of each step in this process results in discontinuous actions between steps, significantly impacting the cutting efficiency. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, this invention is proposed.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a carton cutting mechanism, including two columns, with a gap between the two columns, and a mounting rod, a pressing plate and a receiving plate arranged horizontally from top to bottom between the two columns;

[0005] The mounting rod is vertically equipped with two drive cylinders, which operate synchronously. The piston rods of the two drive cylinders are connected to the top of the pressure plate. The bottom of the pressure plate is equipped with two pressure blocks, and a cutting mechanism is provided on the pressure plate between the two pressure blocks. The bottom of the cutting mechanism is set higher than the bottom of the pressure blocks.

[0006] Each of the two columns has a column slide rail along the height direction on one side facing each other. The two ends of the clamping plate are respectively set in the column slide rails of the two columns, and the clamping plate moves along the column slide rail.

[0007] The cutting mechanism includes a cutting rod and a cutting moving block. The cutting rod is arranged perpendicular to the pressure plate. A cutting transverse slide rail is provided on the cutting rod along its length. The top of the cutting moving block is matched and arranged inside the cutting transverse slide rail. A cutting longitudinal slide rail is provided on the bottom of the cutting moving block, perpendicular to the cutting transverse slide rail. A turntable is provided inside the cutting longitudinal slide rail. A laser cutting part is provided at the bottom of the turntable. The laser cutting part, the turntable, and the cutting moving block are all connected to a controller.

[0008] In a preferred embodiment of the present invention, the outer ring of the cutting mechanism is provided with a dust suction mechanism, the dust suction mechanism including a dust cover;

[0009] The dust cover includes two long sidewalls and two short sidewalls. The two long sidewalls are arranged opposite each other, and the two short sidewalls are arranged opposite each other, forming a square body with openings at both the top and bottom. The width of the cutting rod is greater than the width of the short sidewalls. The top of the square body is connected to the cutting rod, and the bottom opening of the square body faces the receiving plate. A dust suction pipe is provided on one of the short sidewalls, and the dust suction pipe is connected to a dustproof fan.

[0010] In a preferred embodiment of the present invention, the long sidewall includes a first fixed plate, a first telescopic plate, and a first movable plate; the first telescopic plate is connected to both sides of the first fixed plate, and the first movable plate is connected to the other side of the two first telescopic plates; the bottom ends of the first fixed plate, the first telescopic plate, and the first movable plate are all flush; the first fixed plate is provided with a first receiving cavity for accommodating the first telescopic plate.

[0011] The bottom end of the cutting rod is provided with a dustproof slide rail. The first telescopic plate and the first movable plate are both set in the dustproof slide rail and can move along the dustproof slide rail. The first telescopic plate 5022 can retract into or extend out of the first receiving cavity.

[0012] In a preferred embodiment of the present invention, the short sidewall includes a second fixed plate, and a second telescopic plate and a second movable plate are sequentially provided at the bottom end of the second fixed plate, and the bottom end of the second fixed plate and the bottom end of the first movable plate are flush; the second fixed plate is provided with a second receiving cavity for accommodating the second telescopic plate, and the second telescopic plate extends out or retracts into the second receiving cavity.

[0013] In a preferred embodiment of the present invention, the bottom ends of the two first movable plates of the long sidewall are further provided with sealing plates. The sealing plates include sealing telescopic plates and sealing movable plates. The sealing telescopic plates are connected to the first movable plates, and the first movable plates are provided with a third receiving cavity for accommodating the sealing telescopic plates. One side of the sealing movable plates and the sealing telescopic plates are both connected to the short sidewall, and the other side of the sealing movable plates and the sealing telescopic plates forms a sealing free end. A gap is left between the sealing free ends of the two sealing plates.

[0014] The bottom end of the sealing movable plate, the bottom end of the long sidewall, and the bottom end of the short sidewall are provided with elastic sealing gaskets.

[0015] In a preferred embodiment of the present invention, stacked cardboard boxes are placed on the receiving plate, and a cutting groove is provided on the receiving plate at the position corresponding to the cutting mechanism; a protective layer is provided on the inner wall of the cutting groove.

[0016] The receiving plate is provided with multiple through holes penetrating the top and bottom of the receiving plate, and a paper scrap collection groove is provided at the lower part of the receiving plate, which is connected to a collection suction fan.

[0017] In a preferred embodiment of the present invention, movable abutting mechanisms are respectively provided on both sides of the carton on the receiving plate. The movable abutting mechanism includes an abutting cylinder and a movable abutting frame connected to the abutting cylinder. The abutting cylinder is mounted on a column. The receiving plate is provided with an abutting frame slide rail. The movable abutting frame is mounted in the abutting frame slide rail and can move along the abutting slide rail. The movable abutting frame faces the carton.

[0018] In a preferred embodiment of the present invention, the movable abutment frame includes a movable frame and movable blocks. The movable blocks are provided on the side of the movable frame facing the carton. The movable blocks protrude from the movable frame. There are multiple movable blocks, which are spaced apart on the movable frame.

[0019] In a preferred embodiment of the present invention, an opening is provided on the movable frame between two adjacent movable blocks, the movable frame has a hollow structure inside, the opening connects to the hollow structure, and a suction fan is connected to the top of the movable frame through a suction pipe.

[0020] In a preferred embodiment of the present invention, the movable block is positioned above the height of the cardboard box, and the length of the movable frame is greater than the length of the cardboard box.

[0021] The beneficial effects of this invention are as follows: In this application, the downward movement of the pressing plate is achieved by driving the cylinder, which also drives the downward movement of the cutting mechanism on the pressing plate. Since the bottom end of the cutting mechanism is set higher than the bottom end of the pressing block, when the pressing block abuts against and presses against the carton, the cutting mechanism and the carton are still in a non-contact state. That is, the carton is pressed first, and then the laser cutting part cuts the carton. One step realizes the two actions of pressing the carton and the cutting mechanism approaching the carton, avoiding the need to drive the cutting mechanism through other driving mechanisms after pressing the carton, saving time and effort, and improving the cutting efficiency of the carton. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0023] Figure 2 This is a schematic diagram of the cutting mechanism structure of the present invention;

[0024] Figure 3 yes Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the protective cover structure;

[0026] Figure 5 This is a reference diagram showing the usage status of the protective cover;

[0027] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0028] Figure 7 This is a schematic diagram of the movable contact mechanism of the present invention;

[0029] Figure 8 This is a schematic diagram of the movable abutment frame 702 of the present invention;

[0030] In the diagram: Column 1; Column slide rail 101; Mounting rod 2; Drive cylinder 201; Pressing plate 3; Pressing block 301; Receiving plate 4; Cutting groove 401; Abutment frame slide rail 402; Cutting mechanism 5; Cutting rod 501; Dustproof slide rail 5011; Cutting moving block 502; Cutting transverse slide rail 503; Cutting longitudinal slide rail 504; Turntable 505; Laser cutting part 506; Short side wall 601; Second fixing plate 6011; Second telescopic... Plate 6012; Second movable plate 6013; Second receiving cavity 6014; Long side wall 602; First fixed plate 6021; First telescopic plate 6022; First movable plate 6023; First receiving cavity 6024; Sealing plate 603; Sealing telescopic plate 6031; Sealing movable plate 6032; Third receiving cavity 6033; Dust suction pipe 604; Movable abutment mechanism 7; Abutment cylinder 701; Movable abutment frame 702; Paper scrap collection trough 8. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Example 1: As Figures 1 to 5The carton cutting mechanism shown includes two columns 1 with a gap between them. A mounting rod 2, a pressing plate 3 and a receiving plate 4 are arranged horizontally from top to bottom between the two columns 1.

[0034] The mounting rod 2 is vertically equipped with two drive cylinders 201, which operate synchronously. The piston rods of the two drive cylinders are connected to the top of the pressure plate 3. The bottom of the pressure plate 3 is equipped with two pressure blocks 301. A cutting mechanism 5 is provided on the pressure plate 1 between the two pressure blocks 301. The bottom of the cutting mechanism 5 is set higher than the bottom of the pressure blocks.

[0035] Each of the two columns 1 has a column slide rail 101 along the height direction on one side facing each other. The two ends of the clamping plate 3 are respectively set in the column slide rail 101 of the two columns, and the clamping plate 3 moves along the column slide rail 101.

[0036] The cutting mechanism includes a cutting rod 501 and a cutting moving block 502. The cutting rod 501 is arranged perpendicular to the pressing plate 3. A cutting transverse slide rail 503 is provided on the cutting rod 501 along its length. The top of the cutting moving block 502 is matched and arranged inside the cutting transverse slide rail 503. A cutting longitudinal slide rail 504 perpendicular to the cutting transverse slide rail 503 is provided on the bottom of the cutting moving block 502. A turntable 505 is provided inside the cutting longitudinal slide rail 504. A laser cutting part 506 is provided at the bottom of the turntable 505. The laser cutting part 506, the turntable 505 and the cutting moving block 502 are all connected to a controller.

[0037] In use, the cardboard boxes 9 to be cut are first stacked and placed on the receiving plate 4. The receiving plate 4 provides support for the cardboard boxes. Then, by driving two driving cylinders 201 to operate synchronously, the piston rods of the driving cylinders push the pressing plate 3 along the column slide rail 101 on the column 1 towards the receiving plate 4. This causes the pressing block 301 on the pressing plate 3 to continuously approach the cardboard boxes on the receiving plate until the pressing block 301 presses firmly onto the cardboard boxes. In this application, the downward movement of the pressing plate 3 is achieved by the driving cylinders 201, which also... The cutting mechanism 5 on the pressing plate 3 moves downward. Since the bottom end of the cutting mechanism 5 is higher than the bottom end of the pressing block 301, the cutting mechanism 5 and the carton are in a non-contact state when the pressing block 301 abuts against and presses against the carton. That is, the carton is pressed first, and then the laser cutting part 506 cuts the carton. When cutting the carton, the controller controls the rotation of the turntable, or controls the turntable to move along the cutting longitudinal slide rail, or controls the cutting moving block to move along the cutting transverse slide rail, and finally realizes the cutting of the carton.

[0038] After the pressing plate of the present invention approaches the carton, it presses the carton to be cut by pressing the pressing block, which facilitates the subsequent cutting. Since the cutting mechanism is also set on the pressing plate, the downward movement of the pressing plate also drives the downward movement of the cutting mechanism. That is, one step realizes two actions: pressing the carton and the cutting mechanism approaching the carton. This avoids the need to drive the cutting mechanism through other driving mechanisms after pressing the carton, saving time and effort and improving the cutting efficiency of the carton.

[0039] In a preferred embodiment, the outer ring of the cutting mechanism 5 in this application is provided with a dust suction mechanism, which includes a dust cover 6;

[0040] The dust cover includes two long sidewalls 602 and two short sidewalls 601. The two long sidewalls 602 are arranged opposite each other, and the two short sidewalls 601 are arranged opposite each other. A square body with openings at both the top and bottom is formed between the two long sidewalls 602 and the two short sidewalls 601. The width of the cutting rod 501 is greater than the width of the short sidewalls 602. The top of the square body is connected to the cutting rod 501, and the bottom opening of the square body faces the receiving plate 4. A dust suction pipe 604 is provided on one of the short sidewalls 601, and the dust suction pipe 604 is connected to a dustproof fan.

[0041] Fine paper scraps are generated during the cutting process of cardboard boxes. If they are not collected in time, they will not only pollute the environment but also affect the health of workers. This application solves this problem by installing a protective cover around the cutting mechanism. During the cutting process, the cut part of the cardboard box is covered by the protective cover to prevent the fine paper scraps generated during the cutting process from flying. The paper scraps are sucked out and collected by a dust suction pipe and a dustproof fan. This application realizes the collection of paper scraps during the cutting process and avoids environmental pollution at the source.

[0042] In one specific embodiment, the long sidewall 602 in this application includes a first fixed plate 6021, a first telescopic plate 6022, and a first movable plate 6023; the first telescopic plates 6022 are respectively connected to both sides of the first fixed plate 6021, and the first movable plates 6023 are respectively connected to the other side of the two first telescopic plates 6022; the bottom ends of the first fixed plate 6021, the first telescopic plate 6022, and the first movable plate 6023 are all flush; the first fixed plate 6021 is provided with a first receiving cavity 6024 for accommodating the first telescopic plate 6022;

[0043] The bottom end of the cutting rod 501 is provided with a dustproof slide rail 5011. The first telescopic plate 5022 and the first moving plate 502 are both set in the dustproof slide rail 5011 and can move along the dustproof slide rail. The first telescopic plate 5022 can retract into or extend out of the first receiving cavity 6024.

[0044] The short sidewall 601 includes a second fixed plate 6011. The bottom end of the second fixed plate 6011 is provided with a second telescopic plate 6012 and a second movable plate 6013 in sequence. The bottom end of the second fixed plate 6011 and the bottom end of the first movable plate 6023 are flush. The second fixed plate 6011 is provided with a second receiving cavity 6014 to accommodate the second telescopic plate 6012. The second telescopic plate 6012 extends out or retracts into the second receiving cavity 6014.

[0045] Since cardboard boxes come in different models, the required cutting length varies when cutting boxes of different widths. Therefore, adjusting the protective cover to match the required cutting length improves dust collection efficiency. When cutting wider cardboard boxes, the first telescopic plate inside the first receiving cavity 6024 can be moved along the dustproof slide rail by external force to extend the length of the long sidewall, making it easier to adapt to cutting wider cardboard boxes. When the first telescopic plate is not needed, it can be retracted into the first receiving cavity to shorten the length of the long sidewall, making it easier to cut shorter cardboard boxes. Similarly, when it is necessary to cut cartons of different thicknesses, the second telescopic plate inside the second receiving cavity 6014 can be moved. At this time, the overall height of the short sidewall increases, making it easier to cut cartons of higher thickness. When it is not necessary to use a longer short sidewall, the second telescopic plate can be retracted into the second receiving cavity to adjust the overall size of the protective cover, making it easier to adapt to the cutting of cartons of various widths and thicknesses, thus improving the applicability of the protective cover.

[0046] The bottom ends of the two first movable plates on the long sidewall are also provided with sealing plates 603. The sealing plate 603 includes a sealing telescopic plate 6031 and a sealing movable plate 6032. The sealing telescopic plate 6031 is connected to the first movable plate 6023, and the first movable plate 6023 is provided with a third receiving cavity 6033 for accommodating the sealing telescopic plate. One side of the sealing movable plate 6032 and the sealing telescopic plate 6031 are both connected to the short sidewall, and the other side of the sealing movable plate 6032 and the sealing telescopic plate 6031 forms a sealing free end 6034. A gap is left between the sealing plate free ends of the two sealing plates.

[0047] The bottom end of the sealing movable plate 6032, the bottom end of the long side wall 602, and the bottom end of the short side wall 601 are provided with elastic sealing gaskets.

[0048] When the protective cover is installed over the carton cutting mechanism, if the short sidewall is tightly attached to the sidewall of the carton, there is not enough space between the carton and the short sidewall, which greatly affects the removal of paper scraps from the sidewall of the carton. In this application, by setting a sealing plate, the sealing plate is made to contact the sidewall of the carton, leaving a certain space between the short sidewall and the sidewall of the carton, which makes it easy to remove the carton from the sidewall of the carton by the suction fan during cutting. In addition, the setting of the sealing plate and the elastic sealing gasket increases the sealing performance of the protective cover, minimizes the leakage of paper scraps or dust, and ensures the cleanliness of the cutting working environment.

[0049] Since the protective cover is mounted on the cutting rod, which is located at the bottom of the pressure plate, the protective cover moves downward along with the cutting rod as the driving cylinder drives the pressure plate to press the carton. The two long side walls of the protective cover abut against the top of the carton 9, thus blocking the paper scraps flying out from the cutting seam during cutting. The short side wall is longer than the long side wall, thus blocking both sides of the carton. The long and short side walls block the paper scraps generated by the cutting mechanism inside the protective cover, and the dust suction fan sucks the paper scraps out, effectively removing the paper scraps and preventing them from flying and polluting the environment.

[0050] In this application, stacked cardboard boxes are placed on the receiving plate 4, and a cutting groove 401 is provided on the receiving plate at the position corresponding to the cutting mechanism; a protective layer is provided on the inner wall of the cutting groove; when the cutting mechanism cuts the cardboard boxes, the cutting groove collects the paper scraps generated during the laser cutting process; since the receiving plate has multiple through holes penetrating the top and bottom of the receiving plate, a paper scrap collection groove 8 is provided at the lower part of the receiving plate 4, and the paper scrap collection groove 8 is connected to a collection suction fan. The paper scraps generated when the laser cutting part cuts the cardboard boxes fall into the cutting groove, and since the receiving plate has multiple through holes, the collection suction fan can easily collect the paper scraps remaining in the cutting groove and on the receiving plate through the paper scrap collection groove and through holes.

[0051] Example 2: The difference between this example and Example 1 is as follows: Figures 6 to 8 As shown, the receiving plate 4 is provided with movable abutting mechanisms 7 on both sides of the carton. The movable abutting mechanism 7 includes an abutting cylinder 701 and a movable abutting frame 702 connected to the abutting cylinder. The abutting cylinder 701 is provided on the column 1. The receiving plate 4 is provided with an abutting frame slide rail 402. The movable abutting frame 702 is provided in the abutting frame slide rail 402 and can move along the abutting slide rail 402. The movable abutting frame 702 faces the carton.

[0052] The movable abutment frame 702 includes a movable frame 7021 and a movable block 7022. The movable frame 7021 has a movable block 7022 on the side facing the carton. The movable block 7022 protrudes from the movable frame 7021. There are multiple movable blocks 7022, which are spaced apart on the movable frame 7021.

[0053] Before the driving cylinder drives the pressing plate to move towards the receiving plate, the abutting cylinder 701 can be driven, so that the abutting cylinder drives the moving abutting frame 702 to move along the abutting frame slide rail 402, thereby realizing that the moving block 7022 of the abutting moving frame 702 abuts against the side of the carton, realizing the alignment of the side of the carton. Then the driving cylinder drives the pressing plate to move towards the carton. The setting of the moving abutting mechanism 7 in this application enables the alignment of the two sides of the stacked carton before cutting the carton, and also plays a role in fixing the two sides of the carton, ensuring the accuracy and precision of cutting multiple stacked cartons during cutting.

[0054] An opening 7023 is provided on the movable frame between two adjacent movable blocks 7022. The movable frame 7021 has a hollow structure inside, and the opening connects to the hollow structure. The top of the movable frame 7021 is connected to a suction fan through a suction pipe. When the cutting mechanism cuts the carton, the movable abutting mechanism abuts against both sides of the carton. The suction fan performs a suction action on the hollow structure and opening inside the movable frame, thereby sucking out paper scraps or impurities on the side wall of the carton, reducing or avoiding residual paper scraps or impurities on the carton, and facilitating subsequent printing or drying of the carton.

[0055] The moving block 7022 is set higher than the height of the carton, and the length of the moving frame 7021 is greater than the length of the carton, ensuring that the carton or impurities on the side wall of the carton are completely and effectively sucked out.

[0056] In this embodiment, when the cutting mechanism cuts the carton, a suction fan is used to suck out the residual cardboard or impurities on the side wall of the carton, reducing the steps of cleaning cardboard scraps, saving time, and improving the production efficiency of the carton.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A cardboard box cutting mechanism, characterized in that, It includes two columns with a gap between them, and a mounting rod, a pressure plate and a receiving plate are arranged horizontally from top to bottom between the two columns; The mounting rod is vertically equipped with two drive cylinders, which operate synchronously. The piston rods of the two drive cylinders are connected to the top of the pressure plate. The bottom of the pressure plate is equipped with two pressure blocks, and a cutting mechanism is provided on the pressure plate between the two pressure blocks. The bottom of the cutting mechanism is set higher than the bottom of the pressure blocks. Each of the two columns has a column slide rail along the height direction on one side facing each other. The two ends of the clamping plate are respectively set in the column slide rails of the two columns, and the clamping plate moves along the column slide rail. The cutting mechanism includes a cutting rod and a cutting moving block. The cutting rod is arranged perpendicular to the pressure plate. A cutting transverse slide rail is provided on the cutting rod along its length. The top of the cutting moving block is matched and arranged inside the cutting transverse slide rail. A cutting longitudinal slide rail is provided on the bottom of the cutting moving block and is perpendicular to the cutting transverse slide rail. A turntable is provided inside the cutting longitudinal slide rail. A laser cutting part is provided at the bottom of the turntable. The laser cutting part, the turntable, and the cutting moving block are all connected to a controller. The outer ring of the cutting mechanism is equipped with a dust collection mechanism, which includes a dust cover. The dust cover includes two long sidewalls and two short sidewalls. The two long sidewalls are arranged opposite each other, and the two short sidewalls are arranged opposite each other, forming a square body with openings at both the top and bottom. The width of the cutting rod is greater than the width of the short sidewalls. The top of the square body is connected to the cutting rod, and the bottom opening of the square body faces the receiving plate. A dust suction pipe is provided on one of the short sidewalls, and the dust suction pipe is connected to a dustproof fan. The long sidewall includes a first fixed plate, a first telescopic plate, and a first movable plate; the first fixed plate is connected to the first telescopic plate on both sides, and the first movable plate is connected to the other side of each of the two first telescopic plates; the bottom ends of the first fixed plate, the first telescopic plate, and the first movable plate are all flush; the first fixed plate is provided with a first receiving cavity to accommodate the first telescopic plate. The bottom end of the cutting rod is provided with a dustproof slide rail. The first telescopic plate and the first movable plate are both set in the dustproof slide rail and can move along the dustproof slide rail. The first telescopic plate can retract into or extend out of the first receiving cavity. The short sidewall includes a second fixed plate, and a second telescopic plate and a second movable plate are sequentially provided at the bottom end of the second fixed plate, and the bottom end of the second fixed plate and the bottom end of the first movable plate are flush; the second fixed plate is provided with a second receiving cavity to accommodate the second telescopic plate, and the second telescopic plate extends out or retracts into the second receiving cavity; The bottom ends of the two first movable plates of the long sidewall are also provided with sealing plates. The sealing plates include sealing telescopic plates and sealing movable plates. The sealing telescopic plates are connected to the first movable plates, and the first movable plates are provided with a third receiving cavity to accommodate the sealing telescopic plates. One side of the sealing movable plates and the sealing telescopic plates are connected to the short sidewalls, and the other side of the sealing movable plates and the sealing telescopic plates forms a sealing free end. A gap is left between the sealing free ends of the two sealing plates. The bottom end of the sealing movable plate, the bottom end of the long sidewall, and the bottom end of the short sidewall are provided with elastic sealing gaskets.

2. The carton cutting mechanism according to claim 1, characterized in that, Stacked cardboard boxes are placed on the receiving plate, and a cutting groove is provided on the receiving plate at the position corresponding to the cutting mechanism; a protective layer is provided on the inner wall of the cutting groove; The receiving plate is provided with multiple through holes penetrating the top and bottom of the receiving plate, and a paper scrap collection groove is provided at the lower part of the receiving plate, which is connected to a collection suction fan.

3. The carton cutting mechanism according to claim 1, characterized in that, The receiving plate is also provided with movable abutting mechanisms on both sides of the carton. The movable abutting mechanism includes an abutting cylinder and a movable abutting frame connected to the abutting cylinder. The abutting cylinder is mounted on a column. The receiving plate is provided with an abutting frame slide rail. The movable abutting frame is mounted in the abutting frame slide rail and can move along the abutting slide rail. The movable abutting frame faces the carton.

4. The carton cutting mechanism according to claim 3, characterized in that, The movable abutment frame includes a movable frame and movable blocks. The movable blocks are provided on the side of the movable frame facing the carton. The movable blocks protrude from the movable frame. There are multiple movable blocks, which are spaced apart on the movable frame.

5. The carton cutting mechanism according to claim 4, characterized in that, An opening is provided on the moving frame between two adjacent moving blocks. The moving frame has a hollow structure inside, and the opening connects to the hollow structure. A suction fan is connected to the top of the moving frame through a suction pipe.

6. The carton cutting mechanism according to claim 5, characterized in that, The movable block is positioned above the height of the cardboard box, and the length of the movable frame is greater than the length of the cardboard box.

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