CN218988333U - Slitting and rewinding machine pressure roller constant pressure control device - Google Patents

Abstract

The utility model discloses a constant pressure control device for a compression roller of a slitting rewinder, which comprises a driving arm and a compression roller, wherein the middle part of the driving arm is rotatably arranged on a fixed shaft, and the driving arm takes the fixed shaft as a rotating fulcrum; the press roller is arranged at one end of the driving arm, and the other end of the driving arm is provided with a pressure bearing wheel; the cam shaft is fixedly arranged on the cam shaft and is in contact with the peripheral surface of the pressure-bearing wheel, and the cam shaft is connected with a cam shaft driving mechanism. During rewinding operation, the contour high points of the cam are always propped against the pressure-bearing wheel, so long as the position of the cam is unchanged, the pressure transmitted to the driving arm by the pressure-bearing wheel is constant, the pressure of the pressing roller is constant, the whole operation process is not influenced by air source pressure fluctuation, the constant paper tension of rewinding can be always ensured, the consistency of the tightness of small paper rolls for slitting and rewinding is ensured, the paper is not easy to bite on the end surface, and the product percent of pass is greatly improved.

Description

Slitting and rewinding machine pressure roller constant pressure control device

technical field

The utility model belongs to the technical field of slitting machines, in particular to a constant pressure control device for pressure rollers of a slitting and rewinding machine.

Background technique

The slitting and rewinding machine is a device that unwinds, slits, and rewinds large and large diameter paper into small rolls of paper (such as thermal paper, stickers, etc.), which includes an unwinding mechanism and a slitting mechanism. and rewinding mechanism, etc.

When the existing slitting and rewinding machine rewinds the slit paper, the paper is transported to the rewinding station by the power roller and the pressure roller in cooperation with the traction paper. The principle is that the pressure roller is directly controlled by the cylinder through a swing mechanism. Transport the cut paper to be rewinded to the rewinding mechanism. For example, Chinese patent (CN207738185U) discloses a slitting machine without power knife mechanism, including knife roll, auxiliary roll, pressure roll and power roll, the two ends of the auxiliary roll and power roll are respectively fixed on the housing, and the two ends of the knife roll The two ends of the pressure roller are fixed on the shell through the swing plate, the middle part of the swing plate is connected with the piston of the cylinder, the cylinder is hinged on the shell, and the knife roller is evenly fixed with Slitting knife; the paper is pulled out from between the knife roller and the auxiliary roller by the traction of the pressure roller and the power roller. Among them, the pressure roller is provided by the air cylinder. When the pressure of the air source is unstable, the pressure of the pressure roller will also fluctuate accordingly, resulting in that the tension of the paper delivered to the rewinding station cannot be kept constant, resulting in small paper rolls for slitting and rewinding. The tightness is inconsistent, and the end face is easy to bite the paper, which reduces the qualified rate of the product.

Utility model content

The technical problem to be solved by the utility model is to provide a slitting and rewinding machine pressure roller constant pressure control device with ingenious structural design, which is not affected by air source pressure fluctuations and can always ensure constant pressure roller pressure and thus constant tension of rewinding paper. .

In order to solve the above-mentioned technical problems, the technical solution of the utility model is: the constant pressure control device of the pressing roller of the slitting and rewinding machine, including a driving arm and a pressing roller, the middle part of the driving arm is rotatably mounted on a fixed shaft, and the driving arm The fixed shaft is used as the fulcrum of rotation; the pressure roller is installed on one end of the driving arm, and the other end of the driving arm is equipped with a pressure bearing wheel;

It also includes a rotatably arranged camshaft, on which a cam that conflicts with the outer peripheral surface of the pressure bearing wheel is fixedly installed, and the camshaft is connected with a camshaft driving mechanism.

As a preferred technical solution, the end of the drive arm close to the pressure bearing wheel is also provided with a pressure roller separation mechanism.

As a preferred technical solution, the pressure roller separation mechanism is a tension spring.

As a preferred technical solution, the camshaft driving mechanism includes a driving cylinder, and the piston end of the driving cylinder is connected to the camshaft through a connecting rod.

Compared with the prior art, the utility model has the following beneficial effects: during the rewinding operation, the high point of the contour of the cam always presses against the pressure bearing wheel, as long as the position of the cam remains unchanged, the pressure transmitted from the pressure bearing wheel to the driving arm If it is constant, the pressure of the pressure roller is constant, and the whole operation process is not affected by the fluctuation of the air source pressure, which can always ensure the constant tension of the rewinding paper, so as to ensure that the tightness of the small paper rolls for slitting and rewinding is consistent, and the end surface It is not easy to bite the paper, which greatly improves the product qualification rate.

Description of drawings

The following drawings are only intended to illustrate and explain the utility model schematically, and do not limit the scope of the utility model. in:

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is a structural schematic diagram of another direction of the embodiment of the utility model.

In the figure: 1-drive arm; 2-pressure roller; 3-fixed shaft; 4-wall panel; 5-pressure bearing wheel; 6-camshaft; 7-cam; 8-camshaft driving mechanism; 81-driving cylinder; 82-connecting rod; 9-extension spring; 10-power roller.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, further set forth the utility model. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in Figure 1 and Figure 2, the pressure roller constant pressure control device of the slitting and rewinding machine includes a driving arm 1 and a pressure roller 2, the middle part of the driving arm 1 is rotatably mounted on a fixed shaft 3, and the fixed shaft 3 is fixedly installed Between the two wallboards 4, the driving arm 1 can swing up and down with the fixed shaft 3 as the fulcrum; Wheel 5, in this embodiment, the pressure bearing wheel 5 is installed on the side wall of the drive arm 1 near its end; it also includes a camshaft 6 that is rotatably arranged between the two wall panels, and is fixedly installed on the camshaft 6 There is a cam 7 that conflicts with the outer peripheral surface of the pressure bearing wheel 5, the camshaft 6 is connected with a camshaft drive mechanism 8, and the camshaft drive mechanism 8 is used to drive the camshaft 6 to rotate; the drive arm 1 is close to the bearing One end of the pressure roller 5 is also provided with a pressure roller separation mechanism, and in this embodiment, the pressure roller separation mechanism is a tension spring 9 .

Referring to Fig. 2, in the present embodiment, the camshaft driving mechanism 8 includes a driving cylinder 81, the piston end of the driving cylinder 81 is connected with the camshaft 6 through a connecting rod 82, and the piston rod of the driving cylinder 81 drives Camshaft 6 rotates. Of course, the camshaft driving mechanism 8 can also adopt other common structures to realize the rotation of the camshaft 6, which should all belong to the protection scope of the present utility model.

The working principle of the utility model is as follows: during the rewinding operation, the camshaft 6 is driven to rotate by the camshaft driving mechanism, and the camshaft 6 drives the cam 7 to rotate. Under the action, the pressure roller is separated from the power roller. At this time, the paper to be rewound after slitting passes through the middle of the power roller and the pressure roller to the rewinding station, and then under the action of the driving cylinder 81, passes through the connecting rod 82 drives the camshaft 6 to rotate, so that the profile of the cam 7 rotates from the low point to the high point. At this time, the high point of the cam 7 presses on the pressure bearing wheel 5, thereby driving the pressure roller 2 to press the paper to be rewound and cut. On the power roller 10 , the paper is transported to the downstream winding rod under the traction effect of the pressure roller 2 and the power roller 10 . During the entire rewinding process, the high point of the contour of the cam 7 is always pressed against the pressure bearing wheel 5, and the pressure is transmitted to the pressure bearing wheel 5 through the cam 7. As long as the position of the cam 7 remains unchanged, the pressure bearing wheel 5 will be transmitted to the driving arm If the pressure of 1 is constant, the pressure of pressure roller 2 will be constant. The whole operation process will not be affected by the fluctuation of air source pressure, and the tension of the rewinding paper can always be kept constant, so as to ensure the tightness of the small paper rolls for slitting and rewinding. The degree is consistent, and the end surface is not easy to bite the paper, which greatly improves the product qualification rate.

When it is necessary to separate the pressure roller 2 upward from the power roller 10, the camshaft 6 can be driven to rotate through the camshaft driving mechanism. When the profile of the cam 7 changes from a high point to a low point, under the tension of the tension spring 9, the driving arm swings back And make pressure roller 2 break away from power roller 10.

The above descriptions are only illustrative specific implementations of the present utility model, and are not intended to limit the scope of the present utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the protection scope of the present invention.

Claims (4)

1. The constant pressure control device for the pressing roller of the slitting rewinder comprises a driving arm and the pressing roller, and is characterized in that: the middle part of the driving arm is rotatably arranged on the fixed shaft, and the driving arm takes the fixed shaft as a rotating fulcrum; the press roller is arranged at one end of the driving arm, and the other end of the driving arm is provided with a pressure bearing wheel;

the cam shaft is fixedly arranged on the cam shaft and is in contact with the peripheral surface of the pressure-bearing wheel, and the cam shaft is connected with a cam shaft driving mechanism.

2. The constant pressure control device for a pressing roller of a slitting and rewinding machine as claimed in claim 1, characterized in that: and a compression roller separating mechanism is further arranged at one end of the driving arm, which is close to the pressure-bearing wheel.

3. The constant pressure control device for the pressing roller of the slitting and rewinding machine as claimed in claim 2, characterized in that: the compression roller separating mechanism is a tension spring.

4. A slitting rewinder nip roll constant pressure control apparatus as claimed in any one of claims 1 to 3, wherein: the cam shaft driving mechanism comprises a driving cylinder, and the piston end of the driving cylinder is connected with the cam shaft through a connecting rod.

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