CN208084512U - A paper cutting device for household paper - Google Patents

Abstract

The utility model relates to a processing equipment technical field of household paper, concretely relates to paper cutting device of household paper, include the stock form feeding mechanism, draw paper mechanism, second paper feed roller, paper cutting mechanism, second paper feed roller and the receiving agencies that set gradually along the direction of form advancing to reach the pressure paper wheel with first paper feed roller matched with, paper cutting mechanism includes conveyer belt, knife rest and the guiding mechanism who is used for adjusting the interval of knife rest and conveyer belt, the knife rest is rotatable roll-type knife rest, be provided with a plurality of cutters along the circumferencial direction on the roll surface of knife rest, the tangent plane of cutter is perpendicular to the circumference radial with the knife rest; draw paper mechanism including a pair of draw paper roll that is crisscross setting from top to bottom and set up in the cavity roller at draw paper roll both ends, draw and seted up a plurality of through-hole along the circumference on the roll surface of paper roll, the one end and the through-hole intercommunication of cavity roller, the other end of cavity roller is provided with vacuum interface. The utility model discloses a paper cutting device has guaranteed the stability of form advancing, has improved the cut paper accuracy.

Description

A paper cutting device for household paper

technical field

The utility model relates to the technical field of processing equipment for household paper, in particular to a paper cutting device for household paper.

Background technique

The existing paper towel processing equipment usually adopts the cam feeding method. Its structure includes a paper feeding roller, a paper pressing wheel and a paper cutting mechanism respectively located at the front and rear ends of the paper. The paper feeding roller rotates at a constant speed to feed the paper forward, and the paper cutting mechanism needs to convey The incoming roll paper is cut at equal distances. When the paper cutting mechanism completes the paper cutting, there are still points between the cut paper. At this time, the pressure roller rotates to press the paper at the front part. The speed of the paper is greater than the speed of the paper conveyed later, so that the connecting points of the paper are torn off, and the paper after the paper cutting is completed continues to be conveyed forward and collected. Because the above paper feeding method is a push-back feeding method, the front end of the paper is not controlled, especially when the paper thickness is thin and the paper feeding speed is fast, the paper is prone to large shaking up and down, and the paper cutting mechanism cannot be accurately performed. Cutting, and even cutting out the inclined surface, resulting in poor paper cutting accuracy and poor stability; The gap often needs to be adjusted according to the thickness of the paper, which affects the production speed and reduces the production efficiency.

Contents of the invention

The purpose of the utility model is to provide a paper cutting device for household paper with high paper cutting precision and good stability in view of the deficiencies in the prior art.

A paper cutting device for household paper is provided, which includes a frame, a roll paper feeding mechanism, a paper cutting mechanism and a receiving mechanism arranged in sequence along the paper feeding direction, and also includes first paper feeding rollers respectively arranged under the front part of the paper And the second paper feed roller arranged under the rear part of the paper, the pressure roller matched with the first paper feed roller, and the paper leading mechanism arranged between the second paper feed roller and the roll paper feeding mechanism, in:

The paper cutting mechanism includes a conveyor belt, a knife rest arranged above the conveyor belt, and an adjustment mechanism for adjusting the distance between the knife rest and the conveyor belt. The knife rest is a rotatable roller knife rest. The roller surface of the knife holder is provided with a plurality of cutting knives along the circumferential direction, and the cutting surfaces of the cutting knives are perpendicular to the radial direction of the circumference of the knife holder;

The paper threading mechanism includes a pair of paper threading rollers arranged up and down staggeredly and hollow roller shafts arranged at both ends of the paper threading rollers. Several through holes are opened on the roller surface of the paper threading rollers along the circumference. The hollow rollers One end of the shaft communicates with the through hole, and the other end of the hollow roller shaft is provided with a vacuum port, and the vacuum port is connected to a vacuum device.

In the above technical solution, the plurality of cutting knives are equidistantly arranged on the roller surface of the knife holder.

In the above technical solution, the paper cutting mechanism further includes a first motor, and the first motor is drivingly connected to the roller shaft of the knife holder.

In the above technical solution, the adjustment mechanism includes an air cylinder, and the cylinder rod of the air cylinder is connected to the bearing seat of the tool holder.

In the above technical solution, the paper threading roller includes an upper threading roller and a lower threading roller, and the paper passing through the upper threading roller and the lower threading roller is in an S shape.

In the above technical solution, it also includes an elastic mechanism for adjusting the gap between the pressing roller and the first paper feeding roller, the elastic mechanism includes a bracket, an elastic member and a supporting shaft, and the supporting shaft and the pressing roller The axle is fixedly connected, one end of the elastic member is fixed to the bracket, and the other end of the elastic member is fixedly connected to the support shaft.

The above technical solution also includes a second motor for driving the first paper feeding roller, a third motor for driving the second paper feeding roller, a fourth motor for driving the paper leading roller and a control system.

In the above technical solution, the first paper feeding roller, the second paper feeding roller and the paper leading roller are all provided with rotational speed sensors, and the rotational speed sensors are electrically connected to the control system.

The beneficial effects of the utility model:

A paper cutting device for household paper of the utility model, when working, the roll paper feeding mechanism first feeds the paper to the paper-leading roller, and the vacuum device starts at this time, when the paper enters the paper-leading roller, the paper is in the hole formed by the through hole Under the condition of negative pressure, it is tightly adsorbed on the roller surface and rotates synchronously with it. Since the two paper delivery rollers are arranged staggered up and down, the passing paper forms an S shape, which is beneficial for the paper to cover as much as possible on the paper delivery roller. On the circumferential surface of the paper, to generate a large enough paper-leading force, to ensure that the paper can be fed to the paper-cutting mechanism at a relatively fast speed and stably, effectively avoiding the up-and-down shaking of the paper when the paper speed is too fast, and thus greatly improving the paper-cutting accuracy ;When the paper enters the conveyor belt of the paper cutting mechanism, the knife rest starts to rotate, and at the same time, the adjustment mechanism drives the knife rest to move down and approach the conveyer belt to the set distance. At this time, the cutter starts to cut the paper. In the conveying direction, the paper is cut into paper towel units of the same length in turn. According to the thickness of the paper, the distance between the knife holder and the conveyor belt can be adjusted through the adjustment mechanism, so as to control the paper cutting pressure of the cutter and further improve the paper cutting accuracy; completed After the paper is cut, the paper towel unit is transported to the second paper feed roller. At this time, the pressure roller rotates to press the paper at the front part, so that the connecting points between the adjacent paper towel units are torn apart after the paper is cut, and the obtained The paper towel units are transported to the receiving mechanism in turn to be collected. Compared with the prior art, the paper cutting device of the utility model ensures the stability of paper feeding and greatly improves the precision of paper cutting.

Description of drawings

Utilize accompanying drawing to further illustrate the utility model, but the embodiment in the accompanying drawing does not constitute any restriction to the utility model, for those of ordinary skill in the art, under the premise of not paying creative work, also can obtain according to following accompanying drawing Additional drawings.

Fig. 1 is a structural schematic diagram of a paper cutting device for household paper according to the present invention.

Fig. 2 is a structural schematic diagram of a paper cutting mechanism of a household paper paper cutting device of the present invention.

Fig. 3 is a structural schematic diagram of a paper threading roller of a paper cutting device for household paper according to the present invention.

Reference signs:

Roll paper feeding mechanism 1;

Paper cutting mechanism 2, knife holder 21, cutter 22, cylinder 23, conveyor belt 24;

The first paper feed roller 3, the second paper feed roller 4, the pressure roller 5, and the receiving mechanism 6;

Paper threading mechanism 7, paper threading roller 71, through hole 711, hollow roller shaft 72, vacuum interface 73;

Elastic mechanism 8, bracket 81, elastic member 82, support shaft 83;

A first motor 10 , a second motor 20 , and a third motor 30 .

Detailed ways

The utility model is further described in conjunction with the following examples.

A paper cutting device for household paper in this embodiment, as shown in Figure 1 and Figure 2, includes a frame, a roll paper feeding mechanism 1, a paper cutting mechanism 2 and a material receiving mechanism 6 arranged in sequence along the paper feeding direction, The first paper feed roller 3 arranged under the front part of the paper, the second paper feed roller 4 arranged under the rear part of the paper, the pressure roller 5 matched with the first paper feed roller 3, and the paper feed roller 5 arranged at the second paper feed roller. Paper threading mechanism 7 between paper roll 4 and roll paper feeding mechanism 1. Paper cutting mechanism 2 comprises conveyer belt 24, is arranged on the knife rest 21 above conveyer belt 24, the first motor 10 and is used to adjust the adjustment mechanism of the distance between knife rest 21 and conveyer belt 24, and knife rest 21 is a rotatable roller type Knife rest 21, the first motor 10 is driven and connected with the roller shaft of knife rest 21, and the roller surface of knife rest 21 is provided with three cutting knives 22 along the circumferential direction, and the three cutting knives 22 are distributed at equal intervals, which is convenient for paper cutting When the paper towel unit is equal in length, the cutting surface of the cutting knife 22 is perpendicular to the radial direction of the knife holder 21, so that excessive force on the paper can be avoided when cutting the paper. The adjustment mechanism includes a cylinder 23, and the cylinder rod of the cylinder 23 is connected with the bearing seat of the knife rest 21 through a connecting piece. During use, according to the thickness of the paper, the distance between the knife rest 21 and the conveyor belt 24 can be adjusted by moving the cylinder rod up and down. The distance is within the set range, so that the paper cutting pressure of the cutter 22 is well controlled, and the paper cutting precision is further improved.

As shown in Figures 1 and 3, the paper threading mechanism 7 includes a pair of paper threading rollers 71 arranged staggered up and down and hollow roller shafts 72 arranged at both ends of the paper threading rollers 71. There are several through holes 711, one end of the hollow roller shaft 72 communicates with the through holes 711, the other end of the hollow roller shaft 72 is provided with a vacuum port 73, and the vacuum port 73 is connected to a vacuum device. Specifically, the paper threading roller 71 includes an upper paper threading roller 71 and a lower paper threading roller 71, the paper passing through the upper paper threading roller 71 and the lower paper threading roller 71 is in an S shape, and the through holes 711 opened on the paper threading roller 71 are evenly distributed. Set to increase the traction force for absorbing the paper, so that the paper can cover as much as possible on the circumferential surface of the paper delivery roller 71, so as to ensure the stable output of the paper. When working, the roll paper feeding mechanism 1 feeds the paper to the paper-leading roller 71, and the vacuum device is activated. When the paper enters the paper-leading roller 71, the paper is tightly adsorbed on the roller surface under the negative pressure formed by the through hole 711. Thereupon synchronous rotation, because two paper-leading rollers 71 are arranged up and down staggeredly, so that the passing paper forms S shape, promptly helps paper cover on the circumferential surface of paper-leading roller 71 as much as possible, to produce enough big The paper guide force ensures the stable output of the paper, effectively avoids the up and down shaking of the paper when the paper speed is too fast, ensures the stability of the paper feeding, and improves the paper feeding efficiency and paper cutting accuracy.

In this embodiment, as shown in Figure 1, the paper cutting device also includes an elastic mechanism 8 for adjusting the gap between the pressure roller 5 and the first paper feed roller 3, and the elastic mechanism 8 includes a bracket 81, an elastic member 82 and a support shaft 83 , the support shaft 83 is fixedly connected to the axle of the platen roller 5 , one end of the elastic member 82 is fixed to the bracket 81 , and the other end of the elastic member 82 is fixedly connected to the support shaft 83 . Specifically, the elastic member 82 is a compression spring. The roller of the pinch roller 5 sticks to the surface of the paper. When the thickness of the paper changes, the elastic member 82 is compressed or stretched, so that the pressure of the paper between the pinch roller 5 and the first paper feed roller 3 can be kept stable. Within the range, and does not need to frequently manually adjust the distance between the pressure roller 5 and the first paper feed roller 3, the operation is simple and convenient.

In this embodiment, the paper cutting device also includes a second motor 20 for driving the first paper feed roller 3, a third motor 30 for driving the second paper feed roller 4, and a fourth motor 30 for driving the paper delivery roller 71. motor and control system. The second motor 20, the third motor 30 and the fourth motor 40 respectively drive the first paper feed roller 3, the second paper feed roller 4 and the paper leading roller 71 to keep rotating at a constant speed. As a preferred embodiment, the first paper feed roller 3, Both the second paper feeding roller 4 and the paper threading roller 71 are provided with rotational speed sensors, and the rotational speed sensors are electrically connected to the control system to realize automatic control and improve paper feeding efficiency and paper cutting accuracy.

The working principle of the utility model is as follows:

The roll paper feeding mechanism 1 first feeds the paper to the paper-leading roller 71. At this time, the vacuum device is activated. When the paper enters the paper-leading roller 71, the paper is tightly adsorbed on the roller surface under the negative pressure formed by the through hole and then The synchronous rotation, because the two paper delivery rollers 71 are staggered up and down, so that the passing paper forms an S shape, which is conducive to the paper covering as much as possible on the circumferential surface of the paper delivery roller 71, so as to produce a large enough paper delivery The force ensures that the paper can be fed to the paper cutting mechanism 2 at a relatively fast speed and stably, effectively avoiding the up and down shaking of the paper when the paper speed is too fast, thereby greatly improving the cutting accuracy; when the paper enters the conveyor belt of the paper cutting mechanism 2 24. The knife rest 21 starts to rotate, and at the same time, the adjustment mechanism drives the knife rest 21 to move down and approach the conveyor belt 24 to a set distance. The paper is cut into paper towel units of the same length. According to the thickness of the paper, the distance between the knife holder 21 and the conveyor belt 24 can be adjusted through the adjustment mechanism, so as to control the paper cutting pressure of the cutter 22 and further improve the paper cutting accuracy; After the paper is cut, the paper towel unit is transported to the second paper feed roller. At this time, the pressure roller rotates to press the paper at the front part, so that the connection points between adjacent paper towel units are torn off and separated after the paper is cut, and the obtained paper towel The units are transported to the receiving mechanism 6 in turn to be collected.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (8)

1. A paper cutting device for household paper, comprising a frame, a roll paper feeding mechanism, a paper cutting mechanism and a receiving mechanism arranged in sequence along the paper feeding direction, characterized in that: it also includes The first paper feed roller, the second paper feed roller arranged under the rear part of the paper, the pressure roller matched with the first paper feed roller, and the paper feed roller arranged between the second paper feed roller and the roll paper feeding mechanism paper threading mechanism, in which: The paper cutting mechanism includes a conveyor belt, a knife rest arranged above the conveyor belt, and an adjustment mechanism for adjusting the distance between the knife rest and the conveyor belt. The knife rest is a rotatable roller knife rest. The roller surface of the knife holder is provided with a plurality of cutting knives along the circumferential direction, and the cutting surfaces of the cutting knives are perpendicular to the radial direction of the circumference of the knife holder; The paper threading mechanism includes a pair of paper threading rollers arranged up and down staggeredly and hollow roller shafts arranged at both ends of the paper threading rollers. Several through holes are opened on the roller surface of the paper threading rollers along the circumference. The hollow rollers One end of the shaft communicates with the through hole, and the other end of the hollow roller shaft is provided with a vacuum port, and the vacuum port is connected to a vacuum device. 2 . The paper cutting device for household paper according to claim 1 , wherein the plurality of cutting knives are equidistantly distributed on the roller surface of the knife holder. 3 . 3 . The paper cutting device for household paper according to claim 1 , wherein the paper cutting mechanism further comprises a first motor, and the first motor is drivingly connected to the roller shaft of the knife holder. 4 . 4 . The paper cutting device for household paper according to claim 1 or 3 , wherein the adjustment mechanism includes a cylinder, and a cylinder rod of the cylinder is connected to a bearing seat of the knife holder. 5 . 5. A paper cutting device for household paper according to claim 1, characterized in that: the paper threading roller comprises an upper threading roller and a lower threading roller, through which the upper threading roller and the lower threading roller The paper of the roll is S-shaped. 6. A paper cutting device for household paper according to claim 1, further comprising an elastic mechanism for adjusting the gap between the pressure roller and the first paper feed roller, and the elastic mechanism includes a bracket , an elastic member and a support shaft, the support shaft is fixedly connected to the axle of the platen roller, one end of the elastic member is fixed to the bracket, and the other end of the elastic member is fixedly connected to the support shaft. 7. A paper cutting device for household paper according to claim 1, further comprising a second motor for driving the first paper feed roller, a third motor for driving the second paper feed roller And the fourth motor and control system for driving the paper threading roller. 8. A paper cutting device for household paper according to claim 7, characterized in that: the first paper feed roller, the second paper feed roller and the paper threading roller are all provided with rotational speed sensors, and the rotational speed sensors Electrically connected with the control system.