CN115320169B - Cardboard cross cutting device for corrugated case - Google Patents

Abstract

The present invention discloses a cardboard die-cutting device for corrugated paperboard boxes, comprising: a first roller body and a second roller body arranged in parallel on a support frame, the two ends of the first roller body and the second roller body are respectively correspondingly driven and connected to a first motor and a second motor, a gap is reserved between the first roller body and the second roller body, an indentation cutting device is arranged on the surface of the first roller body, the indentation cutting device comprises a plurality of indentation molds arranged in a circumferential array along the surface of the first roller body, the edges of adjacent indentation molds are mutually fitted, and the two ends of the indentation molds are symmetrically fixed with cutting knives; the second roller body comprises a transmission shaft, a hollow roller tube body sleeved on the transmission shaft, the transmission shaft is connected to the second motor driving, the transmission shaft is connected to the roller tube body in rotation, and a waste separation component is elastically connected to the position on the roller tube body corresponding to the cutting knives. Through the present invention, the problem that the final cut carton mold needs to be processed again in the prior art, that is, the cutting waste is separated from the carton mold, which is time-consuming and labor-intensive can be solved.

Description

A cardboard die-cutting device for corrugated paper boxes

Technical Field

The invention relates to a cardboard die-cutting device for a corrugated paper box, and belongs to the technical field of cardboard die-cutting.

Background technique

The corrugated cardboard die-cutting technology is to process the cardboard through cutting, printing, creases and other processes, and finally form it into a carton mold that can be folded into a carton. It usually uses a die-cutting machine, that is, the die-cutting machine is provided with two rollers that rotate relative to each other, one of the rollers is provided with a cutting knife at both ends, and the other roller is provided with a creasing mold, and the creasing mold is located between the cutting knives at both ends, wherein the two rollers squeeze each other and rotate, and a gap is reserved between the two rollers; at this time, the cardboard passes vertically through the gap between the two rollers and moves horizontally along the direction of the roller rotation. The creasing mold will print and crease the cardboard to form the crease of the carton, and the cutting knife will cut the edge of the cardboard to form the lap tongue at both ends of the carton. In this process, in order to ensure that the cardboard can be stably pushed to the gap between the two rollers, a hydraulic pushing mechanism is required to stably push the cardboard.

In the prior art, during the cutting process of the corrugated cardboard die-cutting structure, due to the insufficient pressure between the two rollers or the insufficient sharpness of the cutting blade during the rotation of the rollers, the cutting waste is adhered to the cutting edge of the carton mold and cannot be separated, resulting in the final processed carton mold requiring secondary processing, that is, separating the cutting waste from the carton mold. This process is time-consuming and labor-intensive, adds a working step, and thus increases production costs.

Summary of the invention

The technical problem to be solved by the present invention is to provide a cardboard die-cutting device for corrugated paper boxes, which solves the problem in the prior art that the final cut carton mold needs to be subjected to secondary processing, that is, the cutting waste is separated from the carton mold, which is time-consuming and labor-intensive.

The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

A cardboard die-cutting device for corrugated paper boxes, comprising: a first roller body and a second roller body arranged in parallel on a support frame, the two ends of the first roller body and the second roller body are respectively correspondingly driven and connected to a first motor and a second motor, a gap is reserved between the first roller body and the second roller body, an indentation cutting device is arranged on the surface of the first roller body, the indentation cutting device comprises a plurality of indentation dies arranged in an array along the circumference of the surface of the first roller body, the edges of adjacent indentation dies are fitted to each other, and cutting knives are symmetrically fixedly connected to the two ends of the indentation dies;

The second roller body includes a transmission shaft and a hollow pressure roller tube body sleeved on the transmission shaft, the transmission shaft is drive-connected to the second motor, the transmission shaft is rotationally connected to the pressure roller tube body, and a waste separation component is elastically connected to the position of the pressure roller tube body corresponding to the cutting knife.

As a preferred example, the waste separation component includes an annular ring and an elastic support body. There are several elastic support bodies, and their circumference is arranged on the outer surface of the pressure roller tube body. The inner wall of the annular ring is fixedly connected to the elastic support body.

Among them, the annular ring is made of rubber. When the cardboard contacts the annular ring, the friction with the cardboard is increased, thereby increasing the shaking force. On the one hand, the elastic support body can provide support for the annular ring and limit the annular ring to the outer surface of the pressure roller tube body; on the other hand, it can shake at will under the action of external force, providing a shaking range for the annular ring.

As a preferred example, the elastic support body is a pressure spring.

Among them, the elastic support body adopts a pressure spring, which can convert the pressure received longitudinally into a lateral shaking swing force to realize the possibility of shaking.

As a preferred example, a plurality of air outlet holes are arranged on the circumference of both ends of the pressure roller tube body, the air outlet holes correspond to the positions of the cutting blades, an impeller group is arranged in the pressure roller tube body, and the impeller group is symmetrically fixedly connected to both ends of the transmission shaft.

Among them, the impeller provides a wind source for the overall structure, so that the wind can blow toward the cardboard through the air outlet and act on the cut gap between the waste material and the overlapping tongue, so that under the action of wind force, the waste material can be further quickly separated from the overlapping tongue.

As a preferred example, the air outlet hole is in the shape of a water drop, and the diameter of the air outlet hole gradually expands toward the axial direction of the pressure roller tube body.

The water drop shape forms a water drop air duct, and the wind generated by the impeller group directly acts on the gap between the overlapping tongue and the waste through the water drop air duct, playing a role in guiding the wind direction.

As a preferred example, a plurality of blowing holes are provided on the annular ring.

The blowing holes will further increase the contact area between the wind and the cardboard, further improving the blowing effect.

As a preferred example, a tension adjustment component is provided between the indentation mold and the cutting knife.

A tension adjustment component is provided between the indentation mold and the cutting knife, so that the tightness of the cutting knife can be adjusted. Then, when the cutting knife collapses inward due to long-term use, the tension adjustment component can restore the original position to ensure that the cutting knife is firm.

As a preferred example, the tension adjustment assembly includes a first pipe fitting fixedly connected to the indentation mold, and a second pipe fitting inserted into the first pipe fitting, one end of the second pipe fitting extends to the surface of the cutting blade and is fixed to each other, and the plug-in end of the first pipe fitting is threadedly connected with a retaining ring, which can be tightened or loosened.

Specifically, the plug-in protrusions are arranged circumferentially on the plug-in end of the first pipe, and the plug-in protrusions are arranged with gaps. When the clamping ring is tightened clockwise, the plug-in protrusions move closer to each other, so that the plug-in protrusions contact and press the second pipe, and vice versa.

As a preferred example, the cutting blade is trapezoidal in shape as a whole, and two sides thereof are respectively fixedly connected to the straight edges of the indentation mold, and the second pipe is fixedly connected to the top of the trapezoid.

The beneficial effects of the present invention are:

(1) Through the present invention, the indentation mold and the cutting knife are combined together on one of the rollers, so that the purpose of cutting can be achieved while indenting; and a waste separation component is installed on the other roller, so that the waste reserved after cutting can be separated from the overlap tongue through the natural shaking of the waste separation component, thereby avoiding secondary processing of the carton mold and improving the overall work efficiency.

(2) Through the present invention, a plurality of air outlet holes are arranged on the surface of the roller having the waste separation component, and an impeller group rotating with the second motor is placed inside the roller, so that wind force is generated inside the roller and diffused onto the cardboard through the air outlet holes, thereby blowing the waste directly away from the already formed carton mold, thereby further improving the separation effect.

(3) Through the present invention, a tension adjustment component is provided between the indentation mold and the cutting knife, so that the tightness of the cutting knife can be adjusted. Then, when the cutting knife collapses inward due to being used for too long, the tension adjustment component can restore the original position, thereby ensuring that the cutting knife is firm.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic structural diagram of an indentation cutting device according to the present invention;

FIG3 is a schematic diagram of the structure of the interior of the second roller body of the present invention;

FIG4 is a schematic diagram of the internal structure of the waste separation assembly of the present invention;

FIG5 is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

FIG6 is a schematic diagram of the structure of an indentation mold and a cutting knife in Example 3 of the present invention;

FIG7 is a schematic diagram of a partial structure of FIG6 of the present invention;

FIG8 is a schematic diagram of the final carton mold structure of the present invention.

In the figure: 1. first roller body, 11. indentation cutting device, 2. second roller body, 21. transmission shaft, 22. roller tube body, 221. air outlet, 3. first motor, 4. second motor, 5. indentation mold, 6. cutting knife, 7. waste separation component, 71. annular ring, 711. air blowing hole, 712. mounting seat, 72. elastic support body, 8. impeller group, 81. blade, 82. bushing, 9. tension adjustment component, 91. first pipe fitting, 92. second pipe fitting, 93. snap ring, 10. support frame, 12. cardboard, 13. carton mold, 14. longitudinal support rod, 15. bearing, 16. lap tongue.

Detailed ways

In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

In the description of the present invention, it should be understood that the terms "lateral", "longitudinal", "end", "edge", "sidewall", "up", "down", "upper part", "lower part", "directly above", "surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "end" 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 technical solutions of 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.

Example 1

As shown in Fig. 1-2, a cardboard die-cutting device for corrugated paperboard boxes comprises: a first roller body 1 and a second roller body 2 arranged in parallel on a support frame 10, the two ends of the first roller body 1 and the second roller body 2 are respectively correspondingly driven and connected to a first motor 3 and a second motor 4, a gap is reserved between the first roller body 1 and the second roller body 2, and an indentation cutting device 11 is arranged on the surface of the first roller body 1, and the indentation cutting device 11 comprises a plurality of indentation molds 5 arranged in a circumferential array along the surface of the first roller body 1, the edges of adjacent indentation molds 5 are fitted to each other, and the two ends of the indentation mold 5 are symmetrically fixedly connected with cutting knives 6;

Referring to FIG3 , the second roller body 2 includes a transmission shaft 21 and a hollow roller body 22 sleeved on the transmission shaft 21, wherein a longitudinal support rod 14 with a hole is provided in the roller body 22, a bearing 15 is fixed in the hole, and the transmission shaft 21 passes through the bearing 15 and rotates relative to the roller body 22. The transmission shaft 21 is connected to the second motor 4 through a gear drive, and the transmission shaft 21 is rotatably connected to the roller body 22, and a waste separation component 7 is elastically connected to the position of the roller body 22 corresponding to the cutting blade 6.

With reference to Fig. 1, Fig. 3 and Fig. 4, a plurality of air outlet holes 221 are arranged at the circumference of both ends of the roller tube body 22, and the air outlet holes 221 correspond to the positions of the cutting blades 6. An impeller group 8 is arranged inside the roller tube body 22, and the impeller group 8 is symmetrically fixedly connected to both ends of the transmission shaft 21. The impeller group 8 includes a sleeve 82 fixedly connected to the transmission shaft 21, and blades 81 fixed in an array along the circumference of the sleeve 82, and the impeller group 8 provides a wind source for the overall structure, so that the wind can blow toward the cardboard through the air outlet holes 221, and act on the cut gap between the waste material and the overlapping tongue 16, so that the waste material can be further quickly separated from the overlapping tongue 16 under the action of the wind.

Wherein, referring to FIG4, the waste separation assembly 7 includes an annular ring 71 and an elastic support body 72. There are several elastic support bodies 72, and the circumference of the elastic support bodies 72 is arranged on the outer surface of the roller tube body 22. The inner wall of the annular ring 71 is fixedly connected with the elastic support body 72. Specifically, the elastic support body 72 is a pressure spring, and one end of the pressure spring is fixed in the mounting seat 712. The annular ring 71 is made of rubber. When the cardboard contacts the annular ring 71, the friction with the cardboard is increased, thereby increasing the shaking force. On the one hand, the elastic support body 72 can provide support for the annular ring 71 and limit the annular ring 71 to the outer surface of the roller tube body 22; on the other hand, it can shake freely under the action of external force, providing a shaking range for the annular ring 71. Wherein, the elastic support body 72 uses a pressure spring, which can convert the longitudinal pressure received into a lateral shaking swing force to achieve the possibility of shaking.

Specifically, the air outlet hole 221 is in a water drop shape, and the diameter of the air outlet hole 221 gradually expands toward the axial direction of the roller tube body 22. The water drop shape forms a water drop air duct, and the wind generated by the impeller group 8 directly acts on the gap between the overlapping tongue 16 and the waste through the water drop air duct, playing a role in guiding the wind direction.

Example 2

Referring to Fig. 5, on the basis of embodiment 1, a plurality of blowing holes 711 are provided on the annular collar 71. The blowing holes 711 will further increase the contact area between the wind and the paperboard, and further improve the blowing effect.

Example 3

Referring to Figures 6-7, on the basis of Example 2, a tension adjustment component 9 is provided between the indentation mold 5 and the cutting blade 6. A tension adjustment component 9 is provided between the indentation mold 5 and the cutting blade 6, so that the tightness of the cutting blade 6 can be adjusted, and then when the cutting blade 6 is used for too long and collapses inward, the tension adjustment component 9 can restore the original position to ensure that the cutting blade 6 is secure.

Among them, the tension adjustment component 9 includes a first pipe fitting 91 fixedly connected to the indentation mold 5, and a second pipe fitting 92 inserted in the first pipe fitting 91. One end of the second pipe fitting 92 extends to the surface of the cutting blade 6 and is fixed to each other. The plug-in end of the first pipe fitting 91 is threadedly connected with a retaining ring 93, and the retaining ring 93 can be tightened or loosened. Specifically, the plug-in end of the first pipe fitting 91 is circumferentially provided with plug-in protrusions, and the plug-in protrusions are arranged with gaps. When the retaining ring 93 is tightened clockwise, the plug-in protrusions move closer to each other, so that the plug-in protrusions contact and press the second pipe fitting 92, and vice versa. The cutting blade 6 is a trapezoid as a whole, and its two sides are respectively fixedly connected to the straight edges of the indentation mold 5, and the second pipe fitting 92 is fixedly connected to the top of the trapezoid.

In the above embodiment, referring to FIG. 2 , the edges at both ends of the indentation mold 5 are arc edges, a plurality of arc edges form a complete circle, and the sides adjacent to the arc edges are straight lines.

The specific operation process of this device is as follows:

First, the first motor and the second motor are turned on at the same time, and the first roller and the second roller rotate in opposite directions, that is, one rotates clockwise and the other rotates counterclockwise; then the paperboard is gradually moved close to the gap between the first roller and the second roller through the hydraulic pushing mechanism. When the first roller and the paperboard are in contact with each other, the paperboard 12 moves downward under the driving force of the rotation. During the movement, since the indentation and cutting device is located on the outer surface of the first roller, it can complete the action of indentation and cutting the edge of the paperboard; at the same time, since the waste separation component on the second roller shakes back and forth under the action of contact friction, the waste embedded in the edge of the paperboard will be shaken off by the shaking force, so that the formed carton mold is separated from the waste. Among them, since the paperboard is always supported by the hydraulic pushing mechanism during the pushing process (the hydraulic pushing mechanism can be a hydraulic mechanical arm), the paperboard will not be deflected due to the shaking force of the waste separation component during the entire cutting process, so that the waste is finally separated from the carton mold, and the final carton mold is obtained as shown in Figure 8.

The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims (6)

1. A cardboard die-cutting device for corrugated paper boxes, comprising: a first roller (1) and a second roller (2) arranged in parallel on a support frame, the two ends of the first roller (1) and the second roller (2) being respectively correspondingly driven and connected to a first motor (3) and a second motor (4), a gap being reserved between the first roller (1) and the second roller (2), characterized in that an indentation cutting device (11) is arranged on the surface of the first roller (1), the indentation cutting device (11) comprising a plurality of indentation dies (5) arranged in a circular array along the surface of the first roller (1), the edges of adjacent indentation dies (5) being in contact with each other, and cutting knives (6) being symmetrically fixedly connected to the two ends of the indentation dies (5); The second roller body (2) comprises a transmission shaft (21) and a hollow roller tube body (22) sleeved on the transmission shaft (21); the transmission shaft (21) is drivingly connected to the second motor (4); the transmission shaft (21) is rotationally connected to the roller tube body (22); a waste separation component (7) is elastically connected to a position on the roller tube body (22) corresponding to the cutting blade (6); The waste separation assembly (7) comprises an annular ring (71) and an elastic support body (72); the elastic support body (72) is a plurality of elastic support bodies (72) whose circumference is arranged on the outer surface of the roller tube body (22); the inner wall of the annular ring (71) is fixedly connected to the elastic support body (72); The elastic support body (72) is a pressure spring; A plurality of air outlet holes (221) are arranged on the circumference of both ends of the pressure roller tube body (22), the air outlet holes (221) corresponding to the positions of the cutting blades (6), and an impeller group (8) is arranged inside the pressure roller tube body (22), the impeller group (8) being symmetrically fixedly connected to both ends of the transmission shaft (21). 2. A cardboard die-cutting device for corrugated paper boxes according to claim 1, characterized in that the air outlet hole (221) is in the shape of a water drop, and the diameter of the air outlet hole (221) gradually expands toward the axial direction of the pressure roller tube body (22). 3. A cardboard die-cutting device for corrugated paper boxes according to claim 2, characterized in that a plurality of blowing holes (711) are provided on the annular ring (71). 4. A cardboard die-cutting device for corrugated paper boxes according to claim 1, characterized in that a tension adjustment component (9) is provided between the creasing die (5) and the cutting knife (6). 5. A cardboard die-cutting device for corrugated paper boxes according to claim 4, characterized in that the tension adjustment component (9) comprises a first pipe (91) fixedly connected to the creasing die (5), and a second pipe (92) inserted into the first pipe (91), one end of the second pipe (92) extends to the surface of the cutting blade (6) and is fixed to each other, and a clamping ring (93) is threadedly connected to the plug-in end of the first pipe (91), and the clamping ring (93) can be tightened or loosened. 6. A cardboard die-cutting device for corrugated boxes according to claim 5, characterized in that the cutting knife (6) is trapezoidal in shape as a whole, and its two sides are respectively fixedly connected to the straight edges of the creasing mold (5), and the second tube (92) is fixedly connected to the top of the trapezoid.