CN109968428B

CN109968428B - Belt-shaped paper material cutting device

Info

Publication number: CN109968428B
Application number: CN201711451982.6A
Authority: CN
Inventors: 程卫民; 孙斌; 杜坤艳; 张颖靓
Original assignee: China Tobacco Machinery Technology Center Co ltd
Current assignee: China Tobacco Machinery Technology Center Co ltd
Priority date: 2017-12-27
Filing date: 2017-12-27
Publication date: 2020-12-11
Anticipated expiration: 2037-12-27
Also published as: CN109968428A

Abstract

The invention discloses a belt-shaped paper material cutting device, which comprises: a drive shaft; the tipping paper conveying assembly is fixedly connected with the driving shaft, rotates around the driving shaft and is used for adsorbing and conveying the strip paper to the next process area; the cutting component is arranged on the tipping paper conveying component and is used for cutting the strip paper into sheets; the driving assembly is fixedly connected to the driving shaft and drives the cutting assembly to work; and the supporting component is used for supporting the strip-shaped paper material cutting device. The precise cutting device can accurately finish the precise cutting of the tipping paper, simplify the structure, reduce the difficulty in manufacturing, mounting and debugging the device, save the equipment space and reduce the corresponding economic cost.

Description

Belt-shaped paper material cutting device

Technical Field

The invention relates to the field of tobacco processing, in particular to a strip-shaped paper material cutting device.

Background

In the process of filter cigarette production, after the filter tip and the cigarettes are converged at the converging drum wheel, a piece of filter tip tipping paper (commonly called tipping paper) needs to be wrapped on the excircle of each filter tip and each cigarette so as to fix the filter tip at the tail end of the cigarette. Cigarette making equipment continues to produce, and it is necessary to continuously supply filter tipping paper in the form of sheets. Due to the needs of cigarette technology, a cutting device is needed on cigarette equipment, and continuous strip-shaped filter tip tipping paper is cut into filter tip tipping paper sheets in time, so that the downstream technology can be continued conveniently.

At present, filter tipping paper cutting devices adopted in domestic and foreign cigarette equipment can be basically divided into two types in principle, namely a split extrusion type cutting device and a split shearing type cutting device.

A split extrusion type cutting device is mainly used for early medium-low speed rolling and connecting unit equipment and mainly comprises two roller body structures of a knife roller and a paper roller. In the cutting process, the paper tape of the tipping paper adsorbed on the surface of the paper roll is extruded mainly through the cutting edge of the knife roll, and the strip tipping paper is cut into the sheet tipping paper through the impact and extrusion effects. Its main features are high impact force, easy abrasion of cutting edge and short service life of cutter.

A split shearing type cutting device is widely applied to medium-high speed rolling and connecting equipment. The technology can refer to related patents, patent application numbers 201010113994.X, 201110169271.6, 201210187972.7 and 200520046369.2. Similar to a split extrusion type cutting device, the device mainly comprises a knife roller and a paper roller. The device is characterized in that the paper cutting blade and the cutting edge on the paper roll are combined to form a cutting process under the action of a cutting principle applied by the device, and the continuous tipping paper is cut off through the cutting force. The cutting device is mainly characterized by very high precision, small impact force and greatly prolonged service life of the blade. But due to the high precision, the requirements on the manufacturing, assembly and commissioning processes are also very high. At present, several different paper roll configurations have been derived from such split shear type cutting devices.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a cutting device for strip-shaped paper materials, which can simplify the structure and reduce the difficulty in manufacturing, installation and debugging.

In order to solve the above technical problems, the present invention provides a cutting device for a strip-shaped paper material, comprising a driving shaft; the tipping paper conveying assembly is fixedly connected with the driving shaft, rotates around the driving shaft and is used for adsorbing and conveying the strip paper to the next process area; the cutting component is arranged on the tipping paper conveying component and is used for cutting the strip paper into sheets; the driving assembly is fixedly connected to the driving shaft and drives the cutting assembly to work; and the supporting component is used for supporting the strip-shaped paper material cutting device.

Preferably, the tipping paper conveying assembly comprises a front drum, at least two grooves are uniformly distributed on the circumferential surface of the front drum along the axial direction, small holes are uniformly distributed on the circumferential surface of the front drum outside the grooves along the axial direction and the circumferential direction, and the small holes penetrate through a negative pressure channel inside the front drum.

Preferably, the cutting assembly is a fixed blade and a movable blade, wherein the fixed blade is arranged on one side of the groove and tightly attached to the side surface of the groove, the tail end of the groove close to the driving assembly is provided with a movable blade rotation center, the movable blade is arranged on the tail end of the groove close to the driving assembly, and the movable blade rotates by taking the rotation center as an axis and tightly attaches to the fixed blade to form a shear port.

Preferably, the fixed blade is tightly attached to the side surface of the groove after being pressed by a pressing block, and the pressing block is fixed on the circumferential surface of the front drum through screws.

Preferably, the movable blade is fixed on the groove through a gear.

Preferably, the driving assembly comprises a rear drum fixedly connected with the tipping paper conveying assembly, a through groove corresponding to the groove is formed in the axial direction of the rear drum, a gear shaft is arranged in the through groove, one end of the gear shaft is meshed with the gear through a rack, a rolling device is arranged at the other end of the gear shaft, and the rolling device rolls on the supporting assembly.

Preferably, the support assembly comprises a cam, the working curve of which is in close abutment with the rolling means.

Preferably, the cam is internally provided with a support flange, the cam is in key connection with the support flange, and the inside of the support flange acts on the driving shaft through a bearing.

The invention combines the knife roller and the paper roller required in the cutting process into a whole, and realizes the cutting process of the tipping paper on one roller body. According to the invention, the device can accurately finish the precise cutting of the tipping paper, simplify the structure, reduce the difficulty in manufacturing, mounting and debugging the device, save the equipment space and reduce the corresponding economic cost.

Drawings

The invention is described in further detail below with reference to the following figures and detailed description:

fig. 1 is a front view of a cutting device for a paper web of the present invention.

Fig. 2 is a schematic left side view of the cutting device for the band-shaped paper material of the present invention.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 1.

Fig. 4 is a cross-sectional view taken along line B-B of fig. 2.

Description of the reference numerals

1 filter tip tipping paper 2 movable blade

3 Gear 4 cam

5 support flange 6 drive shaft

7 front drum wheel 8 rear drum wheel

9 gear shaft 10 rolling device

11 fixed blade 12 briquetting

Detailed Description

The invention relates to a cutting device for a strip-shaped paper material, which comprises: a drive shaft 6; connect dress paper conveyor components, cutting assembly, drive assembly, supporting component. Connect dress paper conveyor components, cutting assembly, drive assembly, the equal coaxial setting of supporting component.

The tipping paper conveying assembly is fixedly connected with the driving shaft 6 and rotates around the driving shaft 6, and is used for adsorbing and conveying the strip paper to the next process area; the tipping paper conveying assembly comprises a front drum 7, and the front drum 7 is fixed on a boss of the driving shaft 6 through a positioning and fastening structure and rotates synchronously with the driving shaft. The circumferential surface of the front drum 7 is uniformly distributed with a plurality of grooves with certain depth and width, and the grooves are enough for installing a fixed blade therein. At the non-groove position of the circumferential surface of the front drum, a plurality of rows of small holes are uniformly arranged along the circumferential direction and the axial direction, and the small holes can be communicated with a negative pressure channel in the front drum. When the front drum rotates to a certain angle, the negative pressure can adsorb the tipping paper on the surface of the front drum, so that the tipping paper and the drum are in a relative static state.

The cutting assembly is arranged on the tipping paper conveying assembly and used for cutting the banded paper into sheets. The cutting assembly comprises a fixed blade 11 and a movable blade 2, wherein the fixed blade 11 is fixed on one side of the groove through the pressing blocks 12 at the front end and the rear end of the fixed blade 11. The pressure block 12 is fixed on the outer circular platform of the front drum 7 by screws. One end of each groove of the front drum wheel, which is close to the driving assembly, is provided with a movable blade 2 and a gear 3, and one plane of the movable blade 2 is tightly attached to one plane of the fixed blade 11. The gear 3 drives the movable blade 2 to rotate (lift) correspondingly through the rotation motion, and the movable blade and the fixed blade can form a shearing cutting edge.

The driving assembly is fixedly connected to the driving shaft 6 and drives the cutting assembly to work. The driving assembly comprises a rear drum wheel 8, the front end of the rear drum wheel 8 is fixedly connected with the rear end of the front drum wheel 7, a plurality of through grooves are formed in the circumferential direction of the rear drum wheel 8, and the number and the positions of the through grooves correspond to the grooves of the front drum wheel 7. A gear shaft 9 is mounted in each through slot. One end of the gear shaft 9 has a rack structure engaged with the gear 3, and the other end is provided with a rolling device 10. The surface of the rolling means 10 is in close contact with the working surface of the cam 4 installed at the end of the driving shaft 6.

The supporting assembly is used for supporting the strip-shaped paper material cutting device and comprises a cam 4 and a supporting flange 5, the cam 4 is connected with the supporting flange 5 through a key, and a rolling bearing is installed in a hole of the supporting flange 5 and can act on the driving shaft 6 in a supporting mode. Meanwhile, the cam 4 is fixed on an external box body or a wallboard through a bracket, and the position of the cam 4 is kept fixed. The working surface of the cam 4 has a varying lift profile. The change of the curve causes the back and forth movement of the gear shaft 9, and the back and forth movement is transmitted to the gear 3 through the gear shaft 9, and finally the movable blade 2 is driven to lift, so that the cutting process of the tipping paper 1 is completed.

When the device of the invention works normally, the movable blade 2 can present a corresponding working angle due to the change of the lift curve of the cam 4, and after the continuous tipping paper 1 is avoided, the movable blade 2 descends to form a shearing cutting edge with the fixed blade 11, so that the tipping paper 1 is cut off rapidly. The cut tipping paper sheets are absorbed by the negative pressure on the surface of the front drum wheel 7 and rotate to the next drum wheel along with the front drum wheel 7, and the processes of cutting and conveying the tipping paper are finished.

All the wheels and rotating parts of the device have the same rotation axis with the driving shaft 6 as the rotation center. External power is transmitted to the driving shaft 6 through connection, and the corresponding rotating parts are driven to move.

The tipping paper cutting device can ensure that the tipping paper, the movable cutter and the fixed cutter complete the cutting process of the tipping paper in a relatively static state, and is beneficial to improving the cutting quality. And because the three parts are in relative static circumference, the original knife roll is not required to be designed and installed and adjusted with high precision, the design and manufacturing cost is saved, the equipment structure is simplified, and the space is saved.

The present invention has been described in detail with reference to the specific embodiments, but these should not be construed as limitations of the present invention. Many variations and modifications may be made by one of ordinary skill in the art without departing from the principles of the present invention, which should also be considered as within the scope of the present invention.

Claims

1. A ribbon-like paper material cutting device characterized by comprising:

a drive shaft (6);

the tipping paper conveying assembly is fixedly connected with the driving shaft (6) and rotates around the driving shaft (6) and is used for adsorbing and conveying the strip paper to the next process area;

the cutting component is arranged on the tipping paper conveying component and is used for cutting the strip paper into sheets;

the driving assembly is fixedly connected to the driving shaft (6) and drives the cutting assembly to work;

the supporting assembly is used for supporting the strip-shaped paper material cutting device;

the tipping paper conveying assembly comprises a front drum wheel (7), wherein at least two grooves are uniformly distributed on the circumferential surface of the front drum wheel (7) along the axial direction;

the cutting assembly comprises a fixed blade (11) and a movable blade (2), wherein the fixed blade (11) is arranged on one side of the groove and is tightly attached to the side surface of the groove, the tail end part of the groove, which is close to the driving assembly, is provided with a rotary center of the movable blade, the movable blade (2) is provided with a tail end part of the groove, which is close to the driving assembly, and the movable blade (2) rotates by taking the rotary center as an axis and is tightly attached to the fixed blade (11) to form a shearing opening; the movable blade (2) is fixed on the groove through a gear (3);

the driving assembly comprises a rear drum wheel (8) which is fixedly connected with the tipping paper conveying assembly, a through groove corresponding to the groove is formed in the axial direction of the rear drum wheel (8), a gear shaft (9) is arranged in the through groove, one end of the gear shaft (9) is meshed with the gear (3) through a rack, a rolling device (10) is arranged at the other end of the gear shaft, and the rolling device (10) rolls on the supporting assembly;

the supporting component comprises a cam (4), and the working curved surface of the cam is tightly attached to the rolling device (10).

2. The strip-like paper material cutting device as claimed in claim 1, characterized in that small holes are uniformly distributed in the circumferential direction and the axial direction on the circumferential surface of the front drum (7) outside said grooves, said small holes penetrating to the negative pressure passage inside the front drum (7).

3. The apparatus for cutting a strip-shaped paper material as claimed in claim 2, wherein said fixed blade is pressed by a pressing block (12) and is closely fitted to the side of the recess, and said pressing block (12) is fixed to the circumferential surface of the front drum (7) by screws.

4. Device according to claim 3, characterized in that the cam (4) is internally equipped with a support flange (5), the cam (4) being keyed to the support flange (5), the support flange (5) being internally bearing-mounted on the drive shaft (6).