Cutting device for paperboard production

Abstract

The invention relates to the technical field of cutting devices, and particularly discloses a paperboard production cutting device which comprises a machine body, the machine body is provided with a cutting mechanism used for cutting paperboards, and the machine body is further provided with a clamping mechanism, an adsorption mechanism and a discharging mechanism. The clamping mechanism is arranged on the machine body and used for clamping and fixing the side edge of a paperboard, the clamping mechanism is matched with the machine body in a lifting mode, the adsorption mechanism comprises an air exhaust channel and a plurality of adsorption parts, the adsorption parts are communicated with the air exhaust channel, the air exhaust end of the air exhaust channel is connected with air exhaust equipment, and the air exhaust equipment is connected with the air exhaust mechanism. And the discharging mechanism comprises a moving assembly and a supporting piece, the moving assembly drives the supporting piece to slide in the mode of being attached to the machine body, the upper end of the supporting piece elastically abuts against the lower end face of the paperboard, and the cutting quality of the paperboard is improved through the cutting device.

Description

Technical Field

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

[0002] In the production and processing of cardboard, especially in the proofing operation of new products, in order to quickly produce a small number of samples or prototypes, quickly adapt to the cutting requirements of different designs, and reduce the cost of trial and error, a vibrating knife cutter is usually used to handle some cardboard cutting operations. In the related technology, when the cardboard is cut by a cutting machine, in order to ensure the cutting accuracy of the cardboard, the cardboard needs to be fixed during the cutting process.

[0003] The patent application document with patent publication number CN116890478A discloses a cutting device for processing paper packaging boxes, including a workbench, the upper surface of which is slidably connected to a clamping assembly, the upper surface of which is slidably connected to a slide, and the inner cavity of the slide is provided with a second slide rod. When cutting cardboard in batches, the cutting device clamps cardboards of different specifications through the clamping assembly, thereby avoiding wasting time by replacing the clamping assembly and improving production efficiency. The cardboard is flexibly clamped by the clamping mechanism to avoid deformation of the cardboard due to pressure during the clamping process, and at the same time, the position of the cardboard is prevented from being offset due to too little pressure, thereby improving cutting accuracy.

[0004] When the supporting component of the cutting device in the above patent application document clamps the cardboard, it can adapt to the difference in the length of different cardboards to change the distance in the middle of the connecting frame, and fix the two ends of the cardboard to ensure the stability of the cardboard during the cutting operation. During the cutting operation, as the cut part of the cardboard increases the separation range from the cardboard, the relatively fixed cardboard will shake with the vibration of the cutting knife, resulting in poor uniformity of the cut part of the cardboard in the later stage of cutting, affecting the cutting quality of the cardboard, and when using a vibrating knife cutter to cut the cardboard, the cut part is prone to adhesion to the cardboard at its bottom, and when the cut part is removed later, the adhesion part is prone to produce burrs. Summary of the invention

[0005] The present invention provides a cutting device for cardboard production, aiming to solve the problem that when the cutting device in the related art cuts the cardboard, as the cut part gradually separates from the board body, the cut part shakes relative to the fixed cardboard due to the vibration of the cutting knife, thereby affecting the neatness of the cardboard cutting, and the bottom of the cut part of the cardboard is adhered to the cardboard and easily leaves burrs after separation.

[0006] The cutting device for cardboard production of the present invention comprises a machine body, on which a cutting mechanism for cutting cardboard is provided, and on which a clamping mechanism, an adsorption mechanism and a feeding mechanism are further provided. The clamping mechanism is provided on the machine body and is used to clamp and fix the side edge of the cardboard, and the clamping mechanism cooperates with the lifting and lowering of the machine body. The adsorption mechanism comprises an exhaust channel and a plurality of adsorption members, each of which is communicated with the exhaust channel, and an exhaust device is connected to the exhaust end of the exhaust channel, and an exhaust port of each of the adsorption members is in contact with the lower end surface of the cardboard. The feeding mechanism comprises a moving component and a supporting component, and the moving component drives the supporting component to slide in contact with the machine body, and the upper end of the supporting component elastically abuts against the lower end surface of the cardboard.

[0007] The beneficial effects are as follows: the cutting quality of the cardboard is improved; the clamping mechanism is used to fix the cardboard to be cut as a whole to ensure the overall stability of the cardboard during the cutting process; the adsorption mechanism is used to adsorb and fix the part of the cardboard to be cut during the cutting process to reduce or avoid the shaking of the cut part of the cardboard as the separation range from the cardboard increases during the cutting process, thereby improving the stability and neatness of the finished cardboard during the cutting process; after the cut part of the cardboard is adhered to the cardboard, the unloading mechanism is used to assist the cutting mechanism to completely cut off the adhered part, thereby reducing the possibility of burrs at the cutting position of the cardboard and improving the neatness of the cutting position of the cardboard and the cutting effect.

[0008] Preferably, the clamping mechanism comprises a clamping member 1, a clamping member 2, a driving member 1 and a driving member 2, the protruding end of the driving member 1 is connected to the clamping member 1, and drives the clamping member 1 to slide longitudinally relative to the machine body, the protruding end of the driving member 2 is connected to the clamping member 2, and drives the clamping member 2 to slide longitudinally relative to the clamping member 1, and the upper end of the clamping member 1 and the upper end of the clamping member 2 movably clamp the cardboard.

[0009] Preferably, the clamping member 1 and the clamping member 2 are both in a "U" shape, and a strip-shaped clamping plate 1 is fixed to both sides of the upper end of the clamping member 1, and a strip-shaped clamping plate 2 is fixed to both sides of the upper end of the clamping member 2, and the clamping plate 1 and the clamping plate 2 are respectively attached to the upper and lower end surfaces of the cardboard.

[0010] The beneficial effects are: it is convenient to flexibly fix the cardboard to be cut, and cardboards of different thicknesses can be fixed. The clamping member 1 and the clamping member 2 cooperate to clamp the two ends of the cardboard to be cut, which greatly facilitates the fixing operation of the cardboard and improves the clamping and fixing efficiency of the cardboard.

[0011] Preferably, the support member includes a bottom plate and a support plate, the support plate is located on the upper side of the bottom plate and is connected to the bottom plate via an elastic member, and the bottom plate slides in contact with the machine body.

[0012] Preferably, a connecting portion is fixed at the bottom of the base plate, the connecting portion is slidably matched with the body, the moving component includes a screw and a driving source, the driving end of the driving source is connected to the screw, and the connecting portion is threadedly matched with the screw.

[0013] The beneficial effects are: it is convenient for the support member to cooperate with the cutting mechanism to completely cut off the sticking part of the cardboard, and when the support plate is subjected to longitudinal pressure, the elastic member is pressed downward to ensure that when the cutting knife cuts the sticking part of the cardboard in a vibration manner, the blade of the cutting knife can fully penetrate the sticking part, thereby promoting the complete separation of the sticking part of the cardboard.

[0014] Preferably, an airflow sensor is provided on the adsorbent corresponding to the cutting area, and the airflow sensor is used to monitor the airflow changes at the air suction port of the adsorbent. A control unit is also provided on the body, and the control unit is used to receive the monitoring signals of each of the airflow sensors and control the working state of the driving source according to the acquired monitoring signals.

[0015] The beneficial effects are: improving the working flexibility of the unloading mechanism, and facilitating the control of the support member to quickly and accurately move to the position where the cardboard is adhered through the cooperation of the airflow sensor and the control unit.

[0016] Preferably, the cutting mechanism comprises a feeding assembly and a cutting knife, and the feeding assembly drives the cutting knife to move and rise and fall relative to the machine body.

[0017] The beneficial effects are: ensuring the working efficiency of the cutting mechanism, controlling the movement and lifting of the cutting knife relative to the machine body through the feeding assembly, and flexibly controlling the cutting knife to cut accurate shapes and patterns on the cardboard according to preset requirements during the cardboard cutting operation.

[0018] Preferably, the exhaust end of the exhaust channel is connected to an exhaust pipe, and the exhaust pipe is connected to the exhaust device.

[0019] The beneficial effects of the present invention are: (1) The cutting quality of the cardboard is improved. The clamping mechanism is used to fix the cardboard to be cut as a whole to ensure the overall stability of the cardboard during the cutting process. The adsorption mechanism is used to adsorb and fix the part of the cardboard to be cut during the cutting process to reduce or avoid the shaking of the cut part of the cardboard as the separation range from the cardboard increases during the cutting process, thereby improving the stability and neatness of the finished cardboard during the cutting process. After the cut part of the cardboard is adhered to the cardboard, the unloading mechanism is used to assist the cutting mechanism to completely cut off the adhered part, thereby reducing the possibility of burrs at the cutting position of the cardboard and improving the neatness of the cutting position and cutting effect of the cardboard.

[0020] (2) It is convenient for the support member to cooperate with the cutting mechanism to completely cut off the sticking part of the cardboard. When the support plate is subjected to longitudinal pressure, it presses the elastic member downward to ensure that when the cutting knife cuts the sticking part of the cardboard in a vibrating manner, the blade of the cutting knife can fully penetrate the sticking part, thereby promoting the complete separation of the sticking part of the cardboard. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a schematic diagram of the state in which the cutting mechanism of the present invention performs the first cutting on the cardboard.

[0021] Figure 2 It is a schematic diagram of the state in which the cutting mechanism of the present invention performs secondary cutting on the paperboard.

[0022] Figure 3 It is a schematic diagram of the connection structure between the feeding mechanism and the machine body in the present invention.

[0023] Figure 4 It is a schematic diagram of the connection structure between the adsorption mechanism and the body in the present invention.

[0024] Figure 5 It is a schematic diagram of the connection structure between the clamping mechanism and the machine body in the present invention.

[0025] Reference numerals: 1. Machine body; 11. Feed assembly; 12. Cutting knife; 2. Driving member 1; 21. Clamping member 1; 211. Clamping plate 1; 22. Clamping member 2; 221. Clamping plate 2; 23. Driving member 2; 3. Driving source; 31. Screw rod; 32. Bottom plate; 321. Connecting part; 33. Support plate; 34. Elastic member; 4. Exhaust channel; 41. Adsorption member; 411. Exhaust port; 412. Air flow sensor; 42. Exhaust pipe; 5. Base cardboard; 51. Finished cardboard. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0027] like Figure 1 and Figure 2As shown, the cutting device for cardboard production of the present invention comprises a body 1, on which a cutting mechanism, a clamping mechanism, an adsorption mechanism and a feeding mechanism are provided. The cutting mechanism cuts the cardboard into a certain shape and pattern according to preset requirements. The cutting mechanism comprises a feeding assembly 11 and a cutting knife 12. The feeding assembly 11 drives the cutting knife 12 to slide and rise and fall relative to the body 1, so that the feeding assembly 11 moves the cutting knife 12 according to the preset cutting requirements of the cardboard, so that the cutting knife 12 further cuts the cardboard according to the cutting requirements. The cutting knife 12 is connected to the feeding assembly 11 through a vibration generator, and the vibration generator is used to convert an electrical signal into a mechanical vibration, so that the cutting knife 12 generates a high-frequency vibration and completes the cutting action. The specific structure and working mode of the cutting mechanism belong to the prior art and will not be described in detail here.

[0028] The clamping mechanism is used to fix the cardboard to be cut to ensure the overall stability of the cardboard during the cutting process. For ease of description, the cardboard to be cut is the basic cardboard 5, and the cardboard cut by the cutting mechanism as required is the finished cardboard 51. The adsorption mechanism is used to adsorb and fix the finished cardboard 51 during the cutting process to reduce or avoid the shaking of the finished cardboard 51 as the separation range from the basic cardboard 5 increases during the cutting process, thereby improving the stability and edge neatness of the finished cardboard 51 during the cutting process. When the cutting mechanism controls the vibration of the cutting knife 12 to cut the cardboard, in order to avoid the blade of the cutting knife 12 directly contacting the machine body 1 to damage the blade of the cutting knife 12, the cutting knife 12 is mostly avoided to completely penetrate the bottom of the cardboard to be cut, resulting in the bottom of the finished cardboard 51 being adhered to the basic cardboard 5 after the cutting operation is completed, so that the bottom of the removed finished cardboard 51 is prone to burrs. The unloading mechanism is used to move to the finished cardboard 51 after the first cutting operation of the finished cardboard 51 is completed to assist the cutting mechanism in performing a second cutting on the finished cardboard 51, so that the bottom of the finished cardboard 51 is completely separated from the basic cardboard 5, thereby ensuring the final cutting quality of the finished cardboard 51.

[0029] like Figure 5As shown, the clamping mechanism includes a clamping member 1 21, a clamping member 22, a driving member 1 2 and a driving member 23. The protruding end of the driving member 1 2 is connected to the clamping member 1 21, and drives the clamping member 1 21 to slide longitudinally relative to the body 1. The protruding end of the driving member 23 is connected to the clamping member 22, and drives the clamping member 22 to slide longitudinally relative to the clamping member 1 21. The driving member 1 2 and the driving member 2 23 are both cylinders. The upper end of the clamping member 1 21 and the clamping member 2 The upper end of 22 forms a gap adapted to the thickness of the cardboard, the clamping member 1 21 and the clamping member 22 are both "U"-shaped, and a strip-shaped clamping plate 1 211 is fixed to both sides of the upper end of the clamping member 1 21, and a strip-shaped clamping plate 221 is fixed to both sides of the upper end of the clamping member 22. The clamping plate 1 211 and the clamping plate 221 are respectively attached to the upper and lower end surfaces of the cardboard for clamping, and the end surface of the body 1 for placing the basic cardboard 5 is a work surface.

[0030] In the initial state, the upper end surface of the clamping plate 1 211 is flush with the work surface, and the distance between the clamping plate 221 and the clamping plate 1 211 is greater than the thickness of the cardboard to be cut. The staff puts the base cardboard 5 on the work surface of the body 1, and makes the lower end surfaces of both ends of the base cardboard 5 fit with the upper end surfaces of the two clamping plates 1 211 at the same time. Then, the driving member 23 drives the clamping member 22 to move downward relative to the clamping member 1 21, until the two clamping plates 221 are respectively fitted with the upper end surfaces of both ends of the base cardboard 5, and the clamping plates 1 211 and the clamping plates 2 221 cooperate to clamp and fix the two ends of the base cardboard 5 to prevent the base cardboard 5 from shifting relative to the work surface during the cutting process.

[0031] like Figure 4 As shown, the adsorption mechanism includes an exhaust channel 4 and a plurality of adsorption members 41, each adsorption member 41 is connected to the exhaust channel 4, the exhaust end of the exhaust channel 4 is connected to an exhaust pipe 42, the exhaust pipe 42 is connected to an exhaust device, and an exhaust port 411 of each adsorption member 41 is opened on the work surface. After the base cardboard 5 is placed on the work surface, the exhaust port 411 of each adsorption member 41 is in contact with the lower end surface of the base cardboard 5, and the exhaust port 411 is opposite to the area to be cut of the base cardboard 5.

[0032] The exhaust device exhausts air through the exhaust pipe 42 and the exhaust channel 4, so that the lower end surface of the base cardboard 5 is closely fitted with the exhaust port 411 of the adsorption member 41, further improving the stability of the base cardboard 5 during the cutting process. After the cutting operation of the cutting mechanism is completed, the driving member 2 drives the clamping member 21 to move upward, and the clamping member 22 moves the clamping member 21 upward synchronously, that is, after a cutting operation is completed, the clamping mechanism drives the cardboard to move upward as a whole, and the cut finished cardboard 51 stays on the surface of the working platform under the suction of the adsorption member 41, realizing the automatic separation of the finished cardboard 51 and the base cardboard 5.

[0033] Affected by the vibration cutting action of the cutting knife 12 and the characteristics of the cardboard material, for example, when cutting some cardboards containing special coatings or interlayers, the cutting knife 12 may be obstructed, resulting in the cutting knife 12 being unable to completely reach the bottom plate 32 of the cardboard. After the cutting operation of the cutting knife 12 is completed, the bottom of the finished cardboard 51 is adhered to the base cardboard 5 and is not easy to fall off. The unloading mechanism is used to assist the cutting mechanism to completely cut off the adhered finished cardboard 51.

[0034] like Figures 3 to 5 As shown, the unloading mechanism includes a moving component and a support member, the moving component drives the support member to slide against the body 1, the upper end of the support member is elastically abutted against the lower end surface of the cardboard, specifically, the support member includes a bottom plate 32 and a support plate 33, the support plate 33 is located on the upper side of the bottom plate 32 and is elastically connected to the bottom plate 32, the bottom plate 32 slides against the body 1, a connecting portion 321 is fixed to the bottom of the bottom plate 32, the connecting portion 321 is slidably matched with the body 1, the moving component includes a screw rod 31 and a driving source 3, the driving source 3 can be a motor, the driving end of the driving source 3 is connected to the screw rod 31, the connecting portion 321 is threadedly matched with the screw rod 31, an airflow sensor 412 is also provided on the adsorption member 41, the airflow sensor 412 is used to monitor the airflow changes at the suction port 411 of the adsorption member 41, and a control unit is also provided on the cutting device, the control unit is used to receive the monitoring signal of the airflow sensor 412, and the control unit can control the working state of the driving source 3 according to the acquired monitoring signal of the airflow sensor 412.

[0035] After one cutting action is completed, the clamping mechanism drives the base cardboard 5 to move up, and the finished cardboard 51 that has fallen off relative to the base cardboard 5 is retained on the workbench under the adsorption action of the adsorption member 41, and the finished cardboard 51 that is adhered to the base cardboard 5 rises with the action of the clamping mechanism, and the air suction port 411 of the adsorption member 41 corresponding to the rising finished cardboard 51 is connected with the outside, and the air flow enters the corresponding adsorption member 41, and the air flow sensor 412 sends a signal to the control unit, and the control unit controls the driving source 3 to work. When the driving source 3 works, it drives the screw rod 31 to rotate, and the support member moves to the laminating work platform until it is longitudinally opposite to the air flow sensor 412 that sends the signal and stops moving. At the same time, the support member corresponds to the adhered finished cardboard 51, and then the clamping mechanism drives the base cardboard 5 to move down until the lower end surface of the finished cardboard 51 is adhered to the upper end surface of the support member, and finally the cutting mechanism is started again to perform a secondary cutting action on the adhered finished cardboard 51. The state of the support member during the secondary cutting is as follows: Figure 2 and Figure 3 As shown, when the support plate 33 is subjected to longitudinal pressure, the elastic member 34 is pressed downward to ensure that when the cutting knife 12 cuts the adhesion portion between the finished cardboard 51 and the base cardboard 5 in a vibration manner, the blade portion of the cutting knife 12 can fully penetrate the adhesion portion of the finished cardboard 51, thereby promoting the complete separation of the finished cardboard 51.

[0036] In the initial state, the support member is located on one side of the base paperboard 5, and can also be used to limit the placement position of the base paperboard 5. When the base paperboard 5 is moved in contact with the work surface and the upper end surface of the clamping plate 211, the base paperboard 5 is placed in place after one end of the base paperboard 5 abuts against the support member. The specific state is as follows: Figure 1 As shown, the support member positions the placed basic cardboard 5 in the initial state, which can improve the placement accuracy of the basic cardboard 5 on the work surface, thereby increasing the cutting accuracy of the finished cardboard 51. In addition, when the support member moves in close contact with the work surface, it can also push the detached finished cardboard 51 to move, which is convenient for the centralized collection of the finished cardboard 51. When the support member moves in close contact with the work surface, it can also clean up the cutting debris remaining on the work surface, reducing the impact of the debris on the subsequent cardboard cutting operation.

[0037] The cutting device provided by the present invention improves the stability during the cardboard cutting process, reduces the shaking caused by the cut part of the cardboard being separated from the cardboard, ensures the neatness of the cardboard cutting, and at the same time, by arranging a feeding mechanism and a cutting mechanism to cooperate with each other, performs a secondary cutting operation on the finished cardboard that has not completely fallen off, effectively reduces the adhesion of the cardboard after cutting, and improves the cutting effect of the cardboard.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A cutting device for cardboard production, comprising a body (1), wherein the body (1) is provided with a cutting mechanism for cutting cardboard, characterized in that: The machine body (1) is also provided with a clamping mechanism, an adsorption mechanism and a feeding mechanism. The clamping mechanism is provided on the machine body (1) and is used to clamp and fix the side edge of the paperboard. The clamping mechanism and the machine body (1) are lifted and lowered in coordination. The adsorption mechanism comprises an air suction channel (4) and a plurality of adsorption members (41). Each of the adsorption members (41) is in communication with the air suction channel (4). An air suction device is connected to an air suction end of the air suction channel (4). An air suction port (411) of each of the adsorption members (41) is in contact with the lower end surface of the paperboard. The feeding mechanism comprises a moving component and a supporting member. The moving component drives the supporting member to slide in contact with the machine body (1). The upper end of the supporting member elastically contacts with the lower end surface of the paperboard.

2. The cutting device for cardboard production according to claim 1, characterized in that: The clamping mechanism comprises a clamping member 1 (21), a clamping member 2 (22), a driving member 1 (2) and a driving member 2 (23); the protruding end of the driving member 1 (2) is connected to the clamping member 1 (21) and drives the clamping member 1 (21) to slide longitudinally relative to the machine body (1); the protruding end of the driving member 2 (23) is connected to the clamping member 2 (22) and drives the clamping member 2 (22) to slide longitudinally relative to the clamping member 1 (21); the upper end of the clamping member 1 (21) and the upper end of the clamping member 2 (22) movably clamp the paperboard.

3. The cutting device for cardboard production according to claim 2, characterized in that: The clamping member 1 (21) and the clamping member 2 (22) are both in a U-shape, and a strip-shaped clamping plate 1 (211) is fixed to both sides of the upper end of the clamping member 1 (21), and a strip-shaped clamping plate 2 (221) is fixed to both sides of the upper end of the clamping member 2 (22), and the clamping plate 1 (211) and the clamping plate 2 (221) are respectively attached to the upper and lower end surfaces of the paperboard.

4. The cutting device for cardboard production according to claim 1, characterized in that: The support member comprises a bottom plate (32) and a support plate (33); the support plate (33) is located on the upper side of the bottom plate (32) and is connected to the bottom plate (32) via an elastic member (34); the bottom plate (32) slides in contact with the machine body (1).

5. The cutting device for cardboard production according to claim 4, characterized in that: A connecting portion (321) is fixed to the bottom of the base plate (32), the connecting portion (321) being slidably matched with the machine body (1), the moving assembly comprising a screw rod (31) and a driving source (3), the driving end of the driving source (3) being connected to the screw rod (31), and the connecting portion (321) being threadably matched with the screw rod (31).

6. The cutting device for cardboard production according to claim 5, characterized in that: An airflow sensor (412) is provided on the adsorption member (41) corresponding to the cutting area, and the airflow sensor (412) is used to monitor the airflow change at the air suction port (411) of the adsorption member (41). The machine body (1) is also provided with a control unit, and the control unit is used to receive the monitoring signals of each of the airflow sensors (412) and control the working state of the driving source (3) according to the acquired monitoring signals.

7. The cutting device for cardboard production according to claim 1, characterized in that: The cutting mechanism comprises a feeding assembly (11) and a cutting knife (12), wherein the feeding assembly (11) drives the cutting knife (12) to move and rise and fall relative to the machine body (1).

8. The cutting device for cardboard production according to claim 1, characterized in that: The air extraction end of the air extraction channel (4) is connected to an air extraction pipe (42), and the air extraction pipe (42) is connected to the air extraction equipment.

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