A water-based ink printing and die-cutting machine for cardboard box processing

Abstract

This utility model discloses a water-based ink printing and die-cutting machine for cardboard box processing, including a right support plate and a left support plate. A guide assembly is provided between the left and right support plates. By starting a first low-speed motor, the first low-speed motor can drive the first-stage guide roller and the first synchronous pulley to rotate simultaneously through the first support shaft. During this process, the first synchronous pulley will drive the second-stage guide roller to rotate through the first synchronous toothed belt, the second synchronous pulley, and the second support shaft. The second support shaft will drive the third-stage guide roller to rotate through the third synchronous pulley, the second synchronous toothed belt, the fourth synchronous pulley, and the third support shaft. This allows the first-stage guide roller, the second-stage guide roller, and the third-stage guide roller to rotate synchronously and in the same direction to stably convey the cardboard to be die-cut. By starting a second low-speed motor, the upper support shaft can drive the limit pressure roller to rotate to assist in conveying the cardboard to be die-cut, preventing the cardboard to be die-cut from jumping up and down or swinging during the backward conveying process.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box processing technology, specifically to a water-based ink printing and die-cutting machine for cardboard box processing. Background Technology

[0002] During the cardboard box processing, a die-cutting machine is needed to cut the entire cardboard sheet in half so that it can be cut into the required size for subsequent water-based ink printing.

[0003] However, most existing die-cutting machines use a set of synchronously rotating conveyor rollers to convey and die-cut the cardboard. In actual use, this conveyor structure is very prone to causing the cardboard to jump up and down or swing during the die-cutting process, which affects the accuracy of the die-cutting position and makes it less practical. Utility Model Content

[0004] The purpose of this invention is to provide a water-based ink printing and die-cutting machine for cardboard box processing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A water-based ink printing and die-cutting machine for cardboard box processing includes a support base plate, a support column, a support plate, a right support plate, and a left support plate. The support column is installed on the front side of the upper end face of the support base plate, and the support plate is fixedly connected to the top of the support column. The cardboard to be die-cut is placed on the upper end face of the support plate. The left support plate is fixedly connected to the left side of the upper end face of the support base plate, and the right support plate is fixedly connected to the right side of the upper end face of the support base plate. A guide assembly is provided between the left and right support plates, and the guide assembly is used to support and guide the cardboard to be die-cut. A die-cutting assembly is provided above the guide assembly, and the die-cutting assembly is used to cut the cardboard to be die-cut as it passes by.

[0006] Preferably, the die-cutting assembly includes a third low-speed motor, a transmission roller, a second limiting ring, a die-cutting blade, a pressure feeding ring, and a transmission shaft. The third low-speed motor is installed on the rear side of the right end face of the right support plate. The transmission end of the third low-speed motor is connected to the transmission shaft. The transmission roller is provided on the annular side of the transmission shaft. The second limiting rings are symmetrically arranged on the left and right sides of the annular side of the transmission roller. The pressure feeding ring is provided at the middle position of the annular side of the transmission roller. The die-cutting blade is provided on the annular side of the pressure feeding ring.

[0007] Preferably, the guiding assembly includes a primary guiding roller, a first low-speed motor, a tertiary guiding roller, a die-cutting groove, a third support shaft, a second support shaft, a first support shaft, and a secondary guiding roller. The first low-speed motor is installed on the front side of the right end of the right support plate. The transmission end of the first low-speed motor is connected to the first support shaft. The primary guiding roller is arranged on the annular side of the first support shaft. The secondary guiding roller is arranged on the rear side of the primary guiding roller. The second support shaft is arranged inside the secondary guiding roller. The tertiary guiding roller is arranged on the rear side of the secondary guiding roller. The third support shaft is arranged inside the tertiary guiding roller. A die-cutting groove is opened in the middle of the annular side of the tertiary guiding roller.

[0008] Preferably, a second low-speed motor is installed above the first low-speed motor, and the transmission end of the second low-speed motor is connected to an upper support shaft. The upper support shaft is provided with a limiting pressure roller on its annular side, and the limiting pressure roller rotates synchronously and in opposite directions with the first-stage guide roller. The limiting pressure roller is provided with first limiting stop rings symmetrically on the left and right sides of its annular side, and the distance between the first limiting stop rings is the same as the left and right width of the cardboard to be die-cut.

[0009] Preferably, a first synchronous pulley is provided at the left end of the first support shaft, a second synchronous pulley is provided on the left side of the annular side of the second support shaft, a first synchronous toothed belt is connected between the second synchronous pulley and the first synchronous pulley, a third synchronous pulley is provided on the left side of the second synchronous pulley, a fourth synchronous pulley is provided on the left side of the annular side of the third support shaft, and a second synchronous toothed belt is connected between the fourth synchronous pulley and the third synchronous pulley.

[0010] Preferably, a protective cover is installed on the left end face of the left support plate, and guide ramps are fixedly connected to the rear ends of both the left and right support plates.

[0011] Preferably, the first-stage guide roller, the second-stage guide roller, and the third-stage guide roller have the same specifications and operating height, and the height of the upper surface of the support plate is the same as the height of the upper side of the annular side of the first-stage guide roller.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By starting the first low-speed motor, the first low-speed motor can drive the first-stage guide roller and the first synchronous pulley to rotate simultaneously through the first support shaft. During this process, the first synchronous pulley will drive the second-stage guide roller to rotate through the first synchronous toothed belt, the second synchronous pulley and the second support shaft. The second support shaft will drive the third-stage guide roller to rotate through the third synchronous pulley, the second synchronous toothed belt, the fourth synchronous pulley and the third support shaft. This makes the first-stage guide roller rotate synchronously and in the same direction with the second-stage guide roller and the third-stage guide roller to stably convey the die-cut paperboard. 2. By starting the second low-speed motor, the upper support shaft can drive the limiting pressure roller to rotate for auxiliary conveying of the cardboard to be die-cut, avoiding the cardboard to be die-cut from jumping up and down or swinging during the backward conveying process. In addition, the first limiting ring enables the limiting pressure roller to limit the cardboard to be die-cut as it passes, preventing the cardboard to be die-cut from shifting during the backward conveying process, thereby ensuring the stability of the cardboard to be die-cut in subsequent cutting. 3. By setting a pressure feeding ring, it is possible to prevent the cardboard to be die-cut from stopping or shifting upwards during the cutting process. At the same time, the second limit ring will limit the passage of the cardboard to be die-cut, preventing the cardboard to be die-cut from shifting during the cutting process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a structural diagram of the feeding assembly and the die-cutting assembly in this utility model; Figure 3 This is a partial structural diagram of the feeding assembly and the die-cutting assembly in this utility model; Figure 4 for Figure 3 A magnified view of A in the middle.

[0014] In the diagram: 1. Support base plate; 2. Cardboard to be die-cut; 3. Support column; 4. Support plate; 5. Guide assembly; 51. Primary guide roller; 52. First low-speed motor; 53. Second low-speed motor; 54. Limiting pressure roller; 55. First limiting retaining ring; 56. Tertiary guide roller; 57. Die-cutting groove; 58. Third support shaft; 59. Fourth synchronous pulley; 511. Second synchronous toothed belt; 512. Second support shaft; 513. Third synchronous toothed belt. 514. First synchronous toothed belt; 515. First synchronous pulley; 516. First support shaft; 517. Second synchronous pulley; 518. Secondary guide roller; 519. Upper support shaft; 6. Right support plate; 7. Die-cutting assembly; 71. Third low-speed motor; 72. Transmission roller; 73. Second limit stop ring; 74. Die-cutting blade; 75. Pressure feeding ring; 76. Transmission shaft; 8. Left support plate; 81. Protective cover; 82. Guide inclined plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-4This utility model provides a technical solution: Example 1: A water-based ink printing and die-cutting machine for cardboard box processing includes a support base plate 1, a support column 3, a support plate 4, a right support plate 6, and a left support plate 8. The support column 3 is installed on the front side of the upper end of the support base plate 1. The bottom of the support column 3 is fixed to the upper end of the support base plate 1 by mounting screws. The top of the support column 3 is connected to the support plate 4 by welding. The support column 3 can support and fix the support plate 4. The support plate 4 is fixedly connected to the top of the support column 3. The height of the upper end of the support plate 4 is the same as the height of the upper side of the annular side of the primary guide roller 51. The support plate 4 facilitates the operator to push the cardboard 2 to be die-cut into the space between the primary guide roller 51 and the limiting pressure roller 54. The cardboard 2 to be die-cut is placed on the upper end of the support plate 4. The left support plate 8 is fixedly connected to the left side of the upper end of the support base plate 1, and the right support plate 6 is fixedly connected to the right side of the upper end of the support base plate 1. The left support plate 8 and the right support plate 6 are both connected to the support base plate 1 by welding. The left support plate 8 and the right support plate 6 can support and limit the guide assembly 5 and the die-cutting assembly 7.

[0017] A guide assembly 5 is provided between the left support plate 8 and the right support plate 6. The guide assembly 5 is used to support and guide the die-cut paperboard 2 so that the die-cut paperboard 2 can move backward and be cut. A die-cutting assembly 7 is provided above the guide assembly 5. The die-cutting assembly 7 is used to cut the die-cut paperboard 2 that has passed through into two halves.

[0018] The die-cutting assembly 7 includes a third low-speed motor 71, a transmission roller 72, a second limiting ring 73, a die-cutting blade 74, a pressure feeding ring 75, and a transmission shaft 76. The third low-speed motor 71 is installed on the rear side of the right end face of the right support plate 6. The third low-speed motor 71 is electrically connected to an external control cabinet through a wire. When the third low-speed motor 71 is working, it can drive the transmission shaft 76 to rotate. The transmission end of the third low-speed motor 71 is connected to the transmission shaft 76. The transmission shaft 76 is connected to the transmission roller 72 by welding. The transmission shaft 76 can support the transmission roller 72. The transmission roller 72 is provided on the annular side of the transmission shaft 76. The transmission roller 72 is connected to the pressure feeding ring 75 and the second limiting ring 73 by welding. The transmission roller 72 can support the pressure feeding ring 75 and the second limiting ring 73.

[0019] The drive roller 72 has symmetrically arranged second limiting rings 73 on both sides of its annular side. The spacing between the second limiting rings 73 is the same as the width of the cardboard 2 to be die-cut. The second limiting rings 73 can limit the passage of the cardboard 2 to be die-cut, preventing the cardboard 2 from shifting during the cutting process by the die-cutting blade 74. A pressure feeding ring 75 is arranged in the middle of the annular side of the drive roller 72. The pressure feeding ring 75 and the die-cutting blade 74 are an integral structure. The pressure feeding ring 75 and the three-stage guide roller 56 rotate synchronously but in opposite directions. The distance between roller 5 and the third-stage guide roller 56 is the same as the thickness of the upper and lower parts of the cardboard 2 to be die-cut. The pressure conveying ring 75 has anti-slip texture on its annular side. The pressure conveying ring 75 with anti-slip texture on its annular side has good anti-slip properties, so as to guide the cardboard 2 to be die-cut backward and avoid the cardboard 2 to be die-cut from stopping during the cutting process. The pressure conveying ring 75 has a die-cutting blade 74 on its annular side. The upper and lower thickness of the die-cutting blade 74 is slightly greater than the upper and lower thickness of the cardboard 2 to be die-cut, so that the die-cutting blade 74 can cut the cardboard 2 to be die-cut in half.

[0020] Example 2: Based on Embodiment 1, in this embodiment, by starting the first low-speed motor 52, the first low-speed motor 52 can drive the first-stage guide roller 51 and the first synchronous pulley 515 to rotate simultaneously via the first support shaft 516. During this process, the first synchronous pulley 515 will drive the second-stage guide roller 518 to rotate via the first synchronous toothed belt 514, the second synchronous pulley 517, and the second support shaft 512. The second support shaft 512 will drive the third-stage guide roller 56 to rotate via the third synchronous pulley 513, the second synchronous toothed belt 511, the fourth synchronous pulley 59, and the third support shaft 58. This allows the first-stage guide roller 51, the second-stage guide roller 518, and the third-stage guide roller 56 to rotate synchronously and in the same direction for stable conveying of the die-cut paperboard 2.

[0021] The guiding assembly 5 includes a primary guiding roller 51, a first low-speed motor 52, a tertiary guiding roller 56, a die-cutting groove 57, a third support shaft 58, a second support shaft 512, a first support shaft 516, and a secondary guiding roller 518. The first low-speed motor 52 is installed on the front side of the right end of the right support plate 6. The first low-speed motor 52 is electrically connected to an external control cabinet via wires. When working, the first low-speed motor 52 can drive the first support shaft 516 to rotate. The transmission end of the first low-speed motor 52 is connected to the first support shaft 516. The first support shaft 516 is connected to the primary guiding roller 51 and the first synchronous pulley 515 by welding. The first support shaft 516 can be divided into... The primary guide roller 51 and the first synchronous belt pulley 515 are not supported. The primary guide roller 51 is arranged on the annular side of the first support shaft 516. The secondary guide roller 518 is arranged behind the primary guide roller 51, and the tertiary guide roller 56 is arranged behind the secondary guide roller 518. The primary guide roller 51, the secondary guide roller 518, and the tertiary guide roller 56 have the same specifications and operating height. When rotating, the primary guide roller 51, the secondary guide roller 518, and the tertiary guide roller 56 can support the cardboard 2 to be die-cut and smoothly convey it backward. The rotation direction of the primary guide roller 51, the secondary guide roller 518, and the tertiary guide roller 56 is... Figure 3 It has already been drawn in the middle.

[0022] The secondary guide roller 518 has a second support shaft 512 inside. The second support shaft 512 is connected to the secondary guide roller 518, the second synchronous pulley 517, and the third synchronous pulley 513 by welding. The second support shaft 512 can support the secondary guide roller 518, the second synchronous pulley 517, and the third synchronous pulley 513 respectively. The left end of the second support shaft 512 is in contact with the left side of the inner wall of the protective cover 81 to prevent the second support shaft 512 from shifting left and right during rotation. The tertiary guide roller 56 has a third support shaft 58 inside. The third support shaft 58 is connected to... The third-stage guide roller 56 and the fourth synchronous belt pulley 59 are connected by welding. The third support shaft 58 can support the third-stage guide roller 56 and the fourth synchronous belt pulley 59 respectively. The left end face of the third support shaft 58 is in contact with the left side of the inner wall of the protective cover 81 to prevent the third support shaft 58 from shifting left and right during rotation. A die-cutting groove 57 is opened in the middle of the annular side of the third-stage guide roller 56. The die-cutting groove 57 matches the die-cutting knife 74. The die-cutting groove 57 prevents hard contact or friction between the die-cutting knife 74 and the third-stage guide roller 56, thereby ensuring the service life of the die-cutting knife 74.

[0023] A second low-speed motor 53 is installed above the first low-speed motor 52. The second low-speed motor 53 is electrically connected to an external control cabinet via a wire. When working, the second low-speed motor 53 drives the upper support shaft 519 to rotate. The transmission end of the second low-speed motor 53 is connected to the upper support shaft 519, which is welded to the limiting pressure roller 54. The upper support shaft 519 supports the limiting pressure roller 54. The limiting pressure roller 54 is provided on the annular side of the upper support shaft 519, and the limiting pressure roller 54 and the first-stage guide roller 51 rotate synchronously but in opposite directions. The distance between the limiting pressure roller 54 and the first-stage guide roller 51 is the same as the thickness of the upper and lower parts of the cardboard 2 to be die-cut. The annular side of the limiting pressure roller 54 is provided with anti-slip texture. The limiting pressure roller 54 with anti-slip texture on the annular side has good anti-slip properties, so as to guide the cardboard 2 to be die-cut backward. The conveying mechanism also prevents the die-cut cardboard 2 from jumping upwards during the backward conveying process. The limiting pressure roller 54 has first limiting rings 55 symmetrically arranged on the left and right sides of its annular side, and the distance between the first limiting rings 55 is the same as the width of the die-cut cardboard 2. The first limiting rings 55 are connected to the limiting pressure roller 54 by welding. The first limiting rings 55 can limit the die-cut cardboard 2 as it passes, preventing it from shifting during the process of passing the limiting pressure roller 54 and the first-level guide roller 51. The distance between the third-level guide roller 56 and the first-level guide roller 51 is less than the front-to-back length of the die-cut cardboard 2, so that the die-cut cardboard 2 can be limited by the second limiting ring 73 before it separates from the first limiting ring 55, preventing it from shifting during the conveying process.

[0024] A first synchronous pulley 515 is provided at the left end of the first support shaft 516. A second synchronous pulley 517 is provided on the left side of the annular side of the second support shaft 512. A first synchronous toothed belt 514 connects the second synchronous pulley 517 and the first synchronous pulley 515. When the first synchronous pulley 515 rotates, it can drive the second synchronous pulley 517 to rotate synchronously and in the same direction through the first synchronous toothed belt 514, so that the second synchronous pulley 517 drives the second support shaft 512 to rotate synchronously and in the same direction as the first support shaft 516. A third synchronous pulley 513 is provided on the left side of the second synchronous pulley 517. A fourth synchronous pulley 59 is provided on the left side of the annular side of the third support shaft 58. A second synchronous toothed belt 511 connects the fourth synchronous pulley 59 and the third synchronous pulley 513. During rotation, the second synchronous toothed belt 511 drives the fourth synchronous pulley 59 to rotate synchronously and in the same direction, so that the fourth synchronous pulley 59 drives the third support shaft 58 to rotate synchronously and in the same direction as the second support shaft 512. A protective cover 81 is installed on the left end face of the left support plate 8. The protective cover 81 is a separately detachable structure. The protective cover 81 can not only protect the first synchronous toothed belt 514 and the second synchronous toothed belt 511, but also block and limit the left ends of the second support shaft 512 and the third support shaft 58. The rear end faces of the left support plate 8 and the right support plate 6 are fixedly connected to the guide ramp 82. The height of the upper end face of the guide ramp 82 is lower than the height of the upper side of the annular side of the third-stage guide roller 56. The guide ramp 82 can guide the cut cardboard to the ground below so that the workers can transfer it.

[0025] Working principle: During the cardboard box processing, the whole sheet of cardboard to be die-cut 2 needs to be cut into two. The operator first starts the first low-speed motor 52, the second low-speed motor 53, and the third low-speed motor 71. During this process, the first low-speed motor 52 drives the primary guide roller 51 and the first synchronous pulley 515 to rotate simultaneously through the first support shaft 516. The first synchronous pulley 515 drives the secondary guide roller 518 to rotate through the first synchronous toothed belt 514, the second synchronous pulley 517, and the second support shaft 512. The second support shaft 512 drives the secondary guide roller 518 to rotate through the third synchronous pulley. 513. The second synchronous toothed belt 511, the fourth synchronous pulley 59, and the third support shaft 58 drive the three-stage guide roller 56 to rotate, thereby causing the first-stage guide roller 51 to rotate synchronously and in the same direction with the second-stage guide roller 518 and the third-stage guide roller 56. At the same time, the second low-speed motor 53 drives the limiting pressure roller 54 to rotate synchronously and in opposite directions with the first-stage guide roller 51 via the upper support shaft 519 to assist in the conveying of the die-cut paperboard 2, preventing the die-cut paperboard 2 from jumping up and down or swaying during the backward conveying process. The third low-speed motor 71 drives the transmission roller 72 to rotate via the transmission shaft 76. The drive roller 72 drives the pressure ring 75 and the die-cutting blade 74 to rotate synchronously and in opposite directions with the third-stage guide roller 56. Then, the operator places the cardboard 2 to be die-cut flat on the support plate 4 and pushes it backward between the limiting pressure roller 54 and the first-stage guide roller 51. At this time, the synchronously and in opposite directions, the limiting pressure roller 54 and the first-stage guide roller 51 will convey the cardboard 2 to be die-cut backward. At the same time, the first limiting stop ring 55 will limit the cardboard 2 to be die-cut to prevent it from shifting during the backward conveying process. Then, the cardboard 2 will be conveyed by the second-stage guide roller 518. The cardboard is fed between the drive roller 72 and the third-stage guide roller 56. At this time, the rotating die-cutting blade 74 will cut the cardboard 2 to be die-cut into two halves. The pressing ring 75, which rotates synchronously and in the opposite direction to the third-stage guide roller 56, will press and feed the area of ​​the cardboard 2 to be die-cut, so as to prevent the cardboard 2 to be die-cut from stopping or shifting upward during the cutting process. At the same time, the second limiting ring 73 will limit the cardboard 2 to be die-cut, so as to prevent the cardboard 2 to be die-cut from shifting during the cutting process. Finally, the cardboard cut into two halves will slide down to the ground behind through the guide ramp 82.

[0026] It should be noted that the circuits, electronic components, and driving devices involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve improvements to the software and methods. At the same time, the power connection methods of each electrical device are existing mature technologies, which are well known to those skilled in the art, and will not be elaborated upon here.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-based ink printing and die-cutting machine for cardboard box processing, comprising a support base plate (1), a support column (3), a support plate (4), a right support plate (6), and a left support plate (8), characterized in that: A support column (3) is installed on the front side of the upper end of the support base plate (1). A support plate (4) is fixedly connected to the top of the support column (3). A cardboard (2) to be die-cut is placed on the upper end of the support plate (4). A left support plate (8) is fixedly connected to the left side of the upper end of the support base plate (1). A right support plate (6) is fixedly connected to the right side of the upper end of the support base plate (1). A guide assembly (5) is provided between the left support plate (8) and the right support plate (6), and the guide assembly (5) is used to support and guide the die-cut paperboard (2). A die-cutting assembly (7) is provided above the guide assembly (5), and the die-cutting assembly (7) is used to cut the die-cut paperboard (2) that passes through.

2. A water-based ink printing die cutter for carton processing according to claim 1, characterized in that: The die-cutting assembly (7) includes a third low-speed motor (71), a transmission roller (72), a second limiting ring (73), a die-cutting blade (74), a pressure feeding ring (75), and a transmission shaft (76). The third low-speed motor (71) is installed on the rear side of the right end face of the right support plate (6). The transmission end of the third low-speed motor (71) is connected to the transmission shaft (76). The transmission roller (72) is provided on the annular side of the transmission shaft (76). The second limiting ring (73) is symmetrically provided on the left and right sides of the annular side of the transmission roller (72). The pressure feeding ring (75) is provided in the middle position of the annular side of the transmission roller (72). The die-cutting blade (74) is provided on the annular side of the pressure feeding ring (75).

3. A water-based ink printing die cutter for carton processing according to claim 1, characterized in that: The guiding assembly (5) includes a primary guiding roller (51), a first low-speed motor (52), a tertiary guiding roller (56), a die-cutting groove (57), a third support shaft (58), a second support shaft (512), a first support shaft (516), and a secondary guiding roller (518). The first low-speed motor (52) is installed on the front side of the right end of the right support plate (6). The first low-speed motor (52) is connected to the first support shaft (516) at its transmission end. The primary guiding roller (51) is arranged on the annular side of the first support shaft (516). The secondary guiding roller (518) is arranged on the rear side of the primary guiding roller (51). The second support shaft (512) is arranged inside the secondary guiding roller (518). The tertiary guiding roller (56) is arranged on the rear side of the secondary guiding roller (518). The third support shaft (58) is arranged inside the tertiary guiding roller (56). The die-cutting groove (57) is opened in the middle position of the annular side of the tertiary guiding roller (56).

4. A water-based ink printing die cutter for carton processing according to claim 3, characterized in that: A second low-speed motor (53) is installed above the first low-speed motor (52). The transmission end of the second low-speed motor (53) is connected to an upper support shaft (519). The upper support shaft (519) has a limit pressure roller (54) on its annular side. The limit pressure roller (54) rotates synchronously and in opposite directions with the first-level guide roller (51). The limit pressure roller (54) has a first limit stop ring (55) symmetrically arranged on the left and right sides of its annular side. The distance between the first limit stop rings (55) is the same as the width of the cardboard (2) to be die-cut.

5. A water-based ink printing die cutter for processing cartons as defined in claim 3, characterized by: The first support shaft (516) is provided with a first synchronous pulley (515) at its left end, the second support shaft (512) is provided with a second synchronous pulley (517) on the left side of its annular side, the second synchronous pulley (517) and the first synchronous pulley (515) are connected by a first synchronous toothed belt (514), the second synchronous pulley (517) is provided with a third synchronous pulley (513) on the left side, the third support shaft (58) is provided with a fourth synchronous pulley (59) on the left side of its annular side, and the fourth synchronous pulley (59) and the third synchronous pulley (513) are connected by a second synchronous toothed belt (511).

6. A water-based ink printing die cutter for carton processing according to claim 1, characterized in that: A protective cover (81) is installed on the left end face of the left support plate (8), and guide ramps (82) are fixedly connected to the rear end faces of the left support plate (8) and the right support plate (6).

7. A water-based ink printing die cutter for carton processing according to claim 3, characterized in that: The first-stage guide roller (51), the second-stage guide roller (518), and the third-stage guide roller (56) have the same specifications and operating height. The height of the upper end face of the support plate (4) is the same as the height of the upper side of the annular side of the first-stage guide roller (51).

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