A cutting device for a corrugated cardboard production line

Abstract

The present invention relates to the technical field of corrugated paper processing, and discloses a cutting device for a corrugated paperboard production line, including a base, a fixed frame and a cutter, wherein a movable groove is provided inside the fixed frame, a rotating rod is rotatably connected inside the movable groove, a sliding groove is provided inside the rotating rod, a spring is fixedly connected to the bottom of the sliding groove, a slider is fixedly connected to the top of the spring, and a movable knife is fixedly connected to the middle of the top surface of the slider. The present invention controls the telescopic rod to move downward and the rotating rod to rotate simultaneously through a computer system, so that the movable knife rotated to a vertical state moves upward and extends out under the action of the potential energy of the spring, and the movable knife rotated to the side contacts the side wall of the movable groove, so that the movable knife slides in the sliding groove under the pressure of the side wall of the movable groove, and the shear force between the cutter and the movable knife is used to cut the corrugated paper, thereby avoiding the problem of burrs on the cut caused by the downward pressure of the cutter when the corrugated paper is cut, and improving the cutting quality of the corrugated paper.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated paper processing, in particular to a cutting device for a corrugated paperboard production line. Background Art

[0002] The corrugated paper cutting device is one of the important single machines in the corrugated board production line. It is mainly controlled by a computer to cut the board according to the set length. It has high cutting accuracy and is widely used.

[0003] When the existing corrugated paper cutting device cuts the cardboard, the telescopic rod drives the cutter to move downward to achieve the purpose of cutting the cardboard. However, when the cutter cuts the cardboard from top to bottom, the cutter first contacts the surface of the cardboard and then continues to cut down to cut the cardboard. When the cutter contacts the bottom plate of the cardboard, the overall hardness of the cardboard decreases at this time, which makes it easy for the cutter to have burrs when cutting the bottom plate, resulting in an uneven cut of the cardboard, thereby affecting the quality of the cardboard. At the same time, since the cut cardboard has been in contact with the conveyor belt on the discharging device, the cutter will be subjected to the pulling force of the conveyor belt while cutting the bottom plate, thereby affecting the accuracy of cardboard cutting and affecting the quality of the cardboard after cutting. Summary of the invention

[0004] In view of the shortcomings of the existing corrugated paper cutting device mentioned in the background technology during use, the present invention provides a cutting device for a corrugated cardboard production line, which has the advantages of improving the flatness of the cardboard cut, avoiding contact between the cardboard and the conveyor belt of the discharge device during cutting, and improving the cutting accuracy, thereby solving the technical problems mentioned in the above background technology.

[0005] The present invention provides the following technical solution: a cutting device for a corrugated cardboard production line, comprising a base, a fixed frame and a cutter, wherein a movable groove is provided inside the fixed frame, a rotating rod is rotatably connected inside the movable groove, a sliding groove is provided inside the rotating rod, a spring is fixedly connected to the bottom of the sliding groove, a slider is fixedly connected to the top of the spring, a movable knife is fixedly connected to the middle of the top surface of the slider, and a polishing layer is fixedly provided on the upper part of the side wall of the movable groove.

[0006] Preferably, the upper portion of the movable groove is connected to the outside air, the rotation of the rotating rod is controlled by a computer system, the number of the sliding grooves is four, and the four sliding grooves are evenly distributed in the rotating rod around the circumference of the rotating rod.

[0007] Preferably, the movable knife is located directly below the cutting knife when it is in the highest stroke in the vertical state, and the movable knife slides in contact with the grinding layer after rotating to the two side walls of the movable groove, and slides in contact with the side walls of the movable groove when the movable knife is in the lowest stroke in the vertical state.

[0008] Preferably, a through hole is provided inside the rotating rod and on the side at the lower part of the slide slot, an air groove is provided inside the movable knife, an inclined groove is provided inside the fixed frame and on the upper right side of the movable groove, a fixed shaft is fixedly connected to the middle part of the side wall of the inclined groove, and an inclined plate is movably sleeved on the outer surface of the fixed shaft.

[0009] Preferably, the slide grooves are divided into groups of two, the two slide grooves in each group of the slide grooves are connected through a through hole, and the slide grooves in the two groups are not connected to each other.

[0010] Preferably, the lower portion of the air groove extends into the slider, and the bottom of the air groove passes through the bottom surface of the slider and is connected to the slide groove on the lower side of the slider, and the top of the air groove passes through the top end of the movable knife.

[0011] Preferably, the bottom of the inclined plate when not deflected extends into the movable groove, and the bottom of the inclined plate after deflection is located in the inclined groove.

[0012] The present invention has the following beneficial effects:

[0013] 1. The present invention designs a movable groove, a rotating rod, a slide groove, a spring, a slider and a movable knife, and controls the telescopic rod to move downward and the rotating rod to rotate simultaneously through a computer system, so that the movable knife rotated to a vertical state is aligned with the cutter up and down, and the movable knife in the vertical state is moved upward and extended by the potential energy of the spring. At this time, the movable knife rotated to the side contacts the side wall of the movable groove, so that the movable knife is squeezed by the side wall of the movable groove and slides in the slide groove, and the shear force between the cutter and the movable knife is used to cut the corrugated paper, so that the problem of burrs on the cut caused by the downward pressure of the cutter when the corrugated paper is cut is avoided, and the cutting quality of the corrugated paper is improved.

[0014] 2. The present invention designs a movable knife, a polishing layer, an inclined groove, a fixed shaft and an inclined plate. Through the rotation of the rotating rod, the movable knife is driven by the rotating rod to rotate in the movable groove, and the rotating plate is used to deflect around the fixed shaft. The top of the deflected inclined plate extends upward, and the corrugated cardboard to be cut is lifted up by the extended inclined plate, so that the corrugated cardboard is separated from the second conveyor belt, and the uneven cardboard cut is avoided due to the pulling force of the second conveyor belt when the corrugated cardboard is cut. At the same time, the movable knife rotates in the movable groove, so that the blade of the movable knife fits with the polishing layer, so that paper powder, paper scraps, etc. adhered to the movable knife are scraped off by the polishing layer, and the sharpness of the movable knife is guaranteed, and the probability of burrs on the cardboard cut is reduced.

[0015] 3. The present invention designs a movable knife, a through hole, an air groove, an inclined groove, a fixed shaft and an inclined plate, and utilizes the movable knife on the side to contact the side wall of the movable groove, so that the movable knife on the side and the slider squeeze the gas in the side groove, and transmit it into the vertical groove through the through hole. At this time, the gas in the vertical groove is discharged through the air groove and acts on the corrugated cardboard, so that the corrugated cardboard receives an upward supporting force, thereby avoiding that the corrugated cardboard is only subjected to the pressure of the cutting knife during cutting, causing the cardboard to be damaged. At the same time, when the movable knife in the vertical state rotates to the side, since the original movable knife on the side rotates to the lower side and contacts the side wall of the movable groove, the gas in the original vertical groove will be squeezed and discharged through the through groove, and at this time, the movable knife on the side contacts the inclined plate, so that the gas is guided by the inclined plate and discharged at the top of the inclined groove, thereby acting on the cut corrugated cardboard, prompting the warped cardboard to receive an upward supporting force again, further promoting the efficiency of cardboard cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of a half-section structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the internal structure of the fixing frame of the present invention;

[0019] Figure 4 It is a schematic diagram of the internal structure of the movable knife of the present invention.

[0020] In the figure: 1, base; 2, conveyor belt 1; 3, conveyor belt 2; 4, fixed frame; 41, movable groove; 42, rotating rod; 43, slide groove; 431, through hole; 44, spring; 45, slider; 46, movable knife; 47, air groove; 48, grinding layer; 49, inclined groove; 491, fixed shaft; 492, inclined plate; 5, telescopic rod; 6, cutting knife. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1

[0023] See also Figure 1-Figure 4A cutting device for a corrugated cardboard production line includes a base 1, a conveyor belt 2 is provided on the left side of the top surface of the base 1, a conveyor belt 3 is provided on the right side of the top surface of the base 1, a fixed frame 4 is fixedly welded in the middle of the top surface of the base 1 and located between the conveyor belt 1 2 and the conveyor belt 2 3, a telescopic rod 5 is fixedly installed in the middle of the bottom surface of the top cross frame of the fixed frame 4, and a cutter 6 is fixedly installed at the bottom end of the telescopic rod 5.

[0024] See also Figure 1-Figure 4 The interior of the fixed frame 4 is provided with a movable groove 41, and the interior of the movable groove 41 is rotatably connected with a rotating rod 42. The rotating rod 42 and the telescopic rod 5 are both connected to the computer control system signal. A slide groove 43 is provided inside the rotating rod 42. The upper part of the movable groove 41 is connected to the outside air. The rotation of the rotating rod 42 is controlled by the computer system. The number of the slide grooves 43 is four, and the four slide grooves 43 are evenly distributed in the rotating rod 42 around the circumference of the rotating rod 42, so that when the rotating rod 42 rotates, the two adjacent slide grooves 43 are driven to cooperate with the exhaust. The bottom of the slide groove 43 is fixedly welded with Spring 44, a slider 45 is fixedly welded to the top of the spring 44, a movable knife 46 is fixedly welded to the middle of the top surface of the slider 45, a polishing layer 48 is fixedly provided on the upper part of the side wall of the movable groove 41, and the movable knife 46 is located directly below the cutter 6 when it is in the highest stroke in the vertical state. After the movable knife 46 rotates to the two side walls of the movable groove 41, it slides in contact with the polishing layer 48. When the movable knife 46 is in the lowest stroke in the vertical state, it slides in contact with the side wall of the movable groove 41, ensuring that the movable knife 46 can cooperate with the cutter 6 to cut the cardboard when it is in the vertical state.

[0025] See also Figure 1-Figure 4 , wherein, when the telescopic rod 5 and the rotating rod 42 are controlled to rotate by the computer system, the rotating rod 42 is used to rotate the movable knife 46 to a vertical state, and at this time, the potential energy of the spring 44 is used to drive the slider 45 and the movable knife 46 to move upward, so that the movable knife 46 in the vertical state cooperates with the cutter 6, resulting in a tangential motion between the movable knife 46 and the cutter 6, so as to cut the corrugated cardboard, thereby avoiding the occurrence of burrs on the cardboard cut due to the downward pressure of the cutter 6 when the cardboard is cut;

[0026] At the same time, the rotating rod 42 is used to drive the movable knife 46 to rotate, so that the blade of the movable knife 46 always slides against the inner wall of the movable groove 41, and the paper dust and paper scraps adhering to the movable knife 46 are scraped off through the action of the polishing layer 48. After the scraping, the paper dust and paper scraps are transported to the bottom of the movable groove 41 through the rotation of the movable knife 46, and finally discharged and collected through the discharge hole, while also ensuring the sharpness of the movable knife 46, ensuring that the cardboard can be cut quickly, and improving the efficiency of cardboard cutting.

[0027] The method of use (working principle) of the first embodiment of the present invention is as follows:

[0028] First, the corrugated paper is placed on the conveyor belt 2, and the telescopic rod 5 and the rotating rod 42 are controlled by the computer system to work, so that the telescopic rod 5 drives the cutter 6 to move downward, and at the same time, the rotating rod 42 rotates to drive the movable knife 46 to rotate to a vertical state, and the potential energy of the spring 44 is used to prompt the slider 45 to drive the movable knife 46 to move upward, so that a tangential motion is formed between the movable knife 46 and the cutter 6, thereby cutting the corrugated paper board. Secondly, when the rotating rod 42 drives the movable knife 46 to rotate in the movable groove 41, the blade of the movable knife 46 contacts the inner wall of the movable groove 41. When the movable knife 46 rotates to the polishing layer 48, the polishing layer 48 cooperates with the movable knife 46 to scrape off the paper scraps, paper powder, etc. adhered to the movable knife 46, and the scraped paper scraps, paper powder, etc. are discharged through the discharge hole at the bottom of the movable groove 41, which is convenient for collection, and also ensures the sharpness of the movable knife 46.

[0029] Embodiment 2

[0030] Based on Example 1, please refer to Figure 1-Figure 4 A through hole 431 is provided inside the rotating rod 42 and on the side of the lower part of the slide groove 43. The slide groove 43 is divided into two groups. The two slide grooves 43 in each group of slide grooves 43 are connected through the through hole 431, and the two groups of slide grooves 43 are not connected to each other, so that the gas between each group of slide grooves 43 can be normally transmitted. An air groove 47 is provided inside the movable knife 46. The lower part of the air groove 47 extends into the slider 45, and the bottom of the air groove 47 passes through the bottom surface of the slider 45 and is connected to the slide groove 43 on the lower side of the slider 45, ensuring that the slide groove 4 3 is discharged through the gas groove 47 and acts on the paperboard. The top of the gas groove 47 passes through the top of the movable knife 46. An inclined groove 49 is provided inside the fixed frame 4 and located at the upper right of the movable groove 41. A fixed shaft 491 is fixedly welded to the middle of the side wall of the inclined groove 49. An inclined plate 492 is movably sleeved on the outer surface of the fixed shaft 491. The bottom of the inclined plate 492 when not deflected extends into the movable groove 41. The bottom of the inclined plate 492 after deflection is located in the inclined groove 49, ensuring that the inclined plate 492 is moved when the movable knife 46 rotates.

[0031] See also Figure 1-Figure 4 When the rotating rod 42 drives the movable knife 46 to deflect to a vertical state, the movable knife 46 on the side is used to move the inclined plate 492, so that the top of the inclined plate 492 is deflected upward and tilted, and the tilted inclined plate 492 is used to lift the corrugated cardboard to be cut, so that the cardboard and the cutout form an angle, so that the cardboard is separated from the surface of the conveyor belt 2 3, and the phenomenon of rough edges caused by the pulling force of the conveyor belt 2 3 when the cardboard is cut is avoided, thereby improving the quality of cardboard cutting;

[0032] At the same time, when the movable knife 46 rotates to the side, the movable knife 46 on the side contacts the side wall of the movable groove 41, so that the gas in the chute 43 corresponding to the side movable knife 46 is squeezed and enters the vertical chute 43 through the through hole 431, so that the gas is discharged through the gas groove 47 in the vertical movable knife 46, thereby acting on the bottom surface of the corrugated cardboard, so that the cardboard is subjected to an upward supporting force during slitting, thereby preventing the cardboard from being damaged by the pressure of the cutter 6 only, and when the movable knife 46 in the original vertical state rotates to the side, the movable knife 46 in the original vertical state will contact the inclined plate 492. At this time, the chute 43 corresponding to the movable knife 46 in the original vertical state is squeezed, and the movable knife 46 on the side contacts the side wall of the movable groove 41, which makes the gas in the chute 43 corresponding to the movable knife 46 in the original vertical state can only be discharged through the inclined groove 49, thereby acting on the cut corrugated cardboard, so that the originally inclined cardboard is subjected to an upward supporting force again, further promoting the efficiency of cardboard slitting.

[0033] The method of use (working principle) of the second embodiment of the present invention is as follows:

[0034] When the rotating rod 42 drives the movable knife 46 to rotate to the vertical state, the movable knife 46 on the side moves the inclined plate 492, so that the top of the inclined plate 492 is tilted upward, thereby lifting the cardboard attached to the conveyor belt 2 3, so that the cardboard leaves the conveyor belt 2 3, and at the same time, the movable knife 46 on the side contacts the inner wall of the movable groove 41, so that the gas in the side slide groove 43 is squeezed into the vertical slide groove 43, so that the gas in the vertical slide groove 43 is discharged through the gas groove 47 and acts on the cardboard, so that the cardboard is supported upward during the cutting process.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for a corrugated cardboard production line, comprising a base (1), a fixing frame (4) and a cutter (6), characterized in that: A movable groove (41) is provided inside the fixed frame (4), a rotating rod (42) is rotatably connected inside the movable groove (41), a sliding groove (43) is provided inside the rotating rod (42), a spring (44) is fixedly connected to the bottom of the sliding groove (43), a sliding block (45) is fixedly connected to the top of the spring (44), a movable knife (46) is fixedly connected to the middle of the top surface of the sliding block (45), and a polishing layer (48) is fixedly provided on the upper part of the side wall of the movable groove (41); A through hole (431) is provided inside the rotating rod (42) and on the side surface located at the lower part of the slide groove (43); an air groove (47) is provided inside the movable knife (46); an inclined groove (49) is provided inside the fixed frame (4) and on the upper right side of the movable groove (41); a fixed shaft (491) is fixedly connected to the middle part of the side wall of the inclined groove (49); and an inclined plate (492) is movably sleeved on the outer surface of the fixed shaft (491).

2. A cutting device for a corrugated board production line according to claim 1, characterized in that: The upper portion of the movable groove (41) is in communication with the outside air. The rotation of the rotating rod (42) is controlled by a computer system. The number of the sliding grooves (43) is four. The four sliding grooves (43) are evenly distributed in the rotating rod (42) around the circumference of the rotating rod (42).

3. The cutting device for a corrugated board production line according to claim 1, characterized in that: The movable knife (46) is located directly below the cutting knife (6) when it is in the highest stroke in the vertical state. The movable knife (46) is in sliding contact with the grinding layer (48) after rotating to the two side walls of the movable groove (41). The movable knife (46) is in sliding contact with the side walls of the movable groove (41) when it is in the lowest stroke in the vertical state.

4. The cutting device for a corrugated board production line according to claim 1, characterized in that: The slide grooves (43) are divided into two groups, and the two slide grooves (43) in each group of the slide grooves (43) are connected via a through hole (431), and the two groups of the slide grooves (43) are not connected to each other.

5. The cutting device for a corrugated board production line according to claim 1, characterized in that: The lower part of the air groove (47) extends into the slider (45), and the bottom of the air groove (47) passes through the bottom surface of the slider (45) and communicates with the slide groove (43) on the lower side of the slider (45), and the top of the air groove (47) passes through the top end of the movable knife (46).

6. The cutting device for a corrugated board production line according to claim 1, characterized in that: The bottom of the inclined plate (492) when not deflected extends into the movable groove (41), and the bottom of the inclined plate (492) after deflection is located in the inclined groove (49).

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