CN212402904U

CN212402904U - Isometric cutting mechanism for multiple rolls of paper

Info

Publication number: CN212402904U
Application number: CN202020311099.8U
Authority: CN
Inventors: 蔡锦者; 李立顺
Original assignee: Zhejiang Dayuan Machinery Co ltd
Current assignee: Zhejiang Dayuan Machinery Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2021-01-26
Anticipated expiration: 2030-03-13

Abstract

The invention discloses an isometric cutting mechanism for multiple rolls of paper, which comprises at least two groups of roll paper placing frames, a traction device consisting of a compression roller and a power roller, and a knife roller. The structure of the invention can control the brake device on the drum placing shaft through the electric control device according to the tension detected by the tension detection device so as to control the rotating speed of the drum, thereby controlling the tension of the multiple rolls of paper, so that the multiple rolls of paper can keep equal length after being cut, and the cutting precision of the paper is ensured.

Description

Isometric cutting mechanism for multiple rolls of paper

Technical Field

The invention relates to a paper splitting machine, in particular to a cutting mechanism for simultaneously cutting multiple layers of paper into equal lengths.

Background

A paper slitter is a machine for slitting a whole roll of paper into single sheets of paper with required length, and is provided with a paper traction device and a cutting knife, wherein the traction device comprises a driving traction roller and a driven traction roller, the paper passes through the space between the driving traction roller and the driven traction roller, under the action of the driving traction roller, the upper surface and the lower surface of the paper are respectively contacted with the roller surfaces of the driving traction roller and the driven traction roller, the paper is pulled to the cutting knife due to the action of friction force, and the cutting knife is generally cut by a hob cutter. The cut paper is generally used for making paper boxes and other packaging products, and then processes such as die cutting, gold stamping, indentation and the like are needed. In order to improve the cutting efficiency, a plurality of rolls of paper cylinders are generally drawn to the cutting knife at the same time for cutting. The roller surface of the driven traction roller is generally made of soft materials, the roller surface of the driving traction roller is made of hard materials, the driven traction roller is pressed on the driving traction roller to generate deformation, and paper is in an arc surface state between the driven traction roller and the driving traction roller. However, when multiple layers of paper pass between the passive traction roller and the active traction roller, the linear speed of the paper of the active traction roller is always larger than that of the paper close to the active traction roller, so that the length of the paper far away from the traction roller is longer than that of the paper close to the active traction roller, and the paper far away from the traction roller is cut longer than that of the paper close to the active traction roller during cutting. This makes the precision of the paper that it cuts not enough when providing work efficiency, causes the precision of follow-up production to fail the guarantee.

Disclosure of Invention

In view of the shortcomings of the background art, the technical problem to be solved by the invention is to provide a multi-roll paper equal-length cutting mechanism capable of performing equal-length cutting on a plurality of rolls of paper.

Therefore, the invention is realized by adopting the following technical scheme: the utility model provides a isometric mechanism that cuts of multireel paper, includes draw gear and the rotor that at least two sets of roll web rack, compression roller and power roller are constituteed, its characterized in that the roll web rack with be equipped with corresponding tension detection device between the draw gear, the roll web rack has the roll web and places the axle, the epaxial brake equipment that installs is placed to the roll web, tension detection device passes through electrically controlled device and is connected with corresponding brake equipment.

The tension detection device comprises a paper feeding roller and a dynamometer, and the dynamometer is electrically connected with the electric control device.

The brake device is provided with a brake disc, the roll paper placing frame is provided with a rotating shaft, and the brake disc is installed on the roll paper placing shaft.

The electric control device comprises a program and a control circuit, and the control circuit is electrically connected with the brake device.

According to the structure, in the process of drawing the roll paper, the tension of the paper is detected by the tension detection device, the tension in the process of drawing the paper is controlled by the electric control device to control the brake device, so that the tension of the paper far away from the power roller is larger than that of the paper close to the power roller, the paper far away from the power roller is stretched, the paper is contracted after passing through the drawing device, and after the contracted paper is cut, the paper in each layer is equal in length, so that the precision control of the paper in the subsequent production process is facilitated.

Drawings

The invention has the following drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a tension detecting device according to the present invention;

FIG. 3 is a schematic view of a first embodiment of a web of paper placed on a web holder according to the present invention;

FIG. 4 is a schematic view of a second embodiment of a web of the present invention positioned on a web holder;

fig. 5 is a schematic view of a third embodiment of the web of the present invention placed on a web holder.

Detailed Description

Referring to the attached drawings, the equal-length cutting mechanism for multiple rolls of paper comprises at least two groups of traction devices consisting of a roll paper placing rack, a compression roller 3 and a power roller 4, and a knife roller 5, wherein a rolling cutter is arranged on the knife roller 5, a corresponding tension detection device 2 is arranged between the roll paper placing rack 1 and the traction device, namely, each roll paper placing rack 1 is provided with one tension detection device 2, the roll paper placing rack 1 is provided with a roll paper placing shaft 12, the roll paper placing shaft 10 can be diversified, for example, a conical chuck 12 (shown in fig. 3) is arranged on the roll paper placing shaft 10, the conical chuck 12 is penetrated into a paper tube of roll paper, for example, an inflatable chuck 12 (shown in fig. 4) is arranged on the roll paper placing shaft 10, the inflatable chuck 12 can be inserted into the paper tube of roll paper, or the roll paper placing shaft 10 is directly connected with a long inflatable shaft 12 (shown in fig. 5) to replace the chuck, the long air shaft 12 may be extended into the rolled paper tube. The roll paper placing shaft 10 is provided with a brake device, the brake device is provided with a brake disc 11, and the brake disc 11 is arranged on the roll paper placing shaft 10. The brake device can be a pneumatic brake device or an electric brake device, when the pneumatic brake device is adopted, a brake pad 13 is arranged on one side of a brake disc 11, the brake pad 13 is connected with a pneumatic actuator 14, the purpose can be achieved, when the electric brake device is adopted, the brake pad 13 is connected with the electric actuator 14, or a magnetic powder clutch is directly adopted, the brake devices are common devices in the field, and the specific structures are not described again. The tension detection device 2 is connected with a corresponding brake device through an electric control device 6. Wherein the tension detection device 2 comprises a paper passing roller 7 and a dynamometer 8, and the dynamometer 8 is electrically connected with the electronic control device 6. The electric control device 6 according to the present invention includes a program and a control circuit, and the control circuit is electrically connected to the brake device. After the program design is finished, setting the tension required by each roll of paper; the tension of the web can be controlled by the control circuit by running the program. Of course, the tension can be set constant during the process when one machine is cutting only one specific size of web. Taking cutting two rolls of web paper as an example, as shown in fig. 1, the tension detecting device 2 measures the tension of the upper and lower layers of paper, respectively, the tension of the paper passes through the paper passing roller 7 and the dynamometer 8, the measured information is transmitted to the electric control device 6, then the operator sets the tension of the upper layer of paper by taking the tension of the lower layer of paper as a reference through the input interface, after the program runs, the braking force of the braking device is controlled by the control circuit, so that the tension of each layer of paper can be controlled, the tension of the paper on the upper layer must be set to be larger than that of the lower layer, so that the paper on the upper layer is stretched during the drawing process, although the linear velocity of the upper layer of paper is higher than that of the lower layer, the upper layer of paper is stretched and then contracted after passing through the power roller 4 and the press roller 3, and the contracted paper is cut by the hobbing cutter on the knife roller 5, so that the two layers of paper are equal in length. Two or more layers of paper may be set by the same principle as described above. By the mechanism, the paper sheets cut by the mechanism become relatively equal in length, and the processing precision of subsequent paper sheets is guaranteed.

Claims

1. The utility model provides a isometric mechanism that cuts of multireel paper, includes draw gear and rotor (5) that at least two sets of roll web rack (1), compression roller (3) and power roller (4) are constituteed, its characterized in that roll web rack (1) with be equipped with corresponding tension detection device (2) between the draw gear, roll web rack (1) has the roll web and places axle (10), install brake equipment on roll web places axle (10), tension detection device (2) are connected with corresponding brake equipment through electrically controlled device (6).

2. The equal length cutting mechanism for multiple rolls of paper sheets as claimed in claim 1, wherein the tension detecting device (2) comprises a paper passing roller (7) and a dynamometer (8), and the dynamometer (8) is electrically connected with the electric control device (6).

3. Isometric cutting mechanism for rolls of paper according to claim 1, characterized in that the brake device has a brake disc (11), the brake disc (11) being mounted on the roll placement shaft (10).