RU1778011C - Device for automatic cutting of corrugated filtering paper coiled into tube - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in an apparatus for automatically cutting filter paper into curtains with a predetermined number of pleats on automatic lines for manufacturing filter elements (curtains). The purpose of the invention is to increase the reliability and quality of the cut by obtaining smooth edges of the corrugated curtain of the product with a given number of corrugations and to ensure safety. The device comprises a housing 1, in which a cutting mechanism is located, consisting of an engine 1 and a circular knife 3, a mechanism for moving the product into the cutting zone in the form of a pneumatic cylinder 4, mounted under the product supply zone on columns 6, rigidly fixed to the plate 6 of the housing 1. stock 7 of the pneumatic cylinder is connected to a receiving means made in the form of a receiving pipe 8 with a flange and a tray, which can be moved (lowered and raised) on the columns. Catchers are made in the form of pins. The receiving pipe has grooves. To ensure that the incoming corrugations of the product freely pass into the pipe without jamming and can move freely along the axis when it is fixed, the catchers are made with grooves covering the circular knife, have rounded peaks with radii R1. bevels, lateral surfaces and bevels with rounded edges with the possibility of contact with the corrugations. 1 s.p. f-ly, 8 ill. sl c

Description

The invention relates to mechanical engineering and can be used in devices for automatically cutting filter paper into curtains with a given number of corrugations on automatic lines for manufacturing filter elements (curtains)

In the manufacture of filter elements on automatic lines, paper filter curtains are used. Measuring cutters are known.

Known devices cannot be used to automatically cut paper curtains due to its low stiffness.

A device for automatically cutting a paper curtain with a predetermined number of zigs is also known. The reference mechanism in this device consists of freely rotating on the axis of the drum with jumpers of circular cross section, the number of which corresponds to a given number of zigs in the cut off parts of the curtain. Jumper pitch

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the drum is equal to the zigzag pitch of the curtain, which moves in the guide tray and, being engaged with the jumpers, rotates the drum. The angle of rotation of the latter is sensed by the transducer driving the cutting mechanism.

In this device, due to the insufficient rigidity of the filtering curtain, edges with uneven surfaces are formed after pieces of the filtering element, as well as a large dispersion in the number of zigs that significantly exceeds the permissible ones, which do not allow the use of the filtering element for further technological operations.

The closest in technical essence to the claimed device is a device for cutting paper corrugated tubular products, which consists of a housing in which there is a mechanism for counting corrugations, including drive worms, a circular knife and a receiving sleeve with holes. The worms are rotated by the drive of an automatic filter curtain manufacturing line using a shaft and a set of gears. The gears are selected in such a way that for one revolution of the shaft, the product is fed to one corrugation. Using a flag and a sensor (proximity switch), the converter fixes the number of corrugations of the pipe that has passed through the worms.

Upon reaching a predetermined number of shaft revolutions, the converter drives a cam, which moves the (knife) disk knife, and, with some advance of the knife, supplies compressed air to the receiving sleeve in which the product is currently located (corrugated filter paper). Compressed air stretches the paper (pipe), giving it stiffness. In this case, the circular knife produces a piece of corrugated pipe.

The known device has the following disadvantages. Firstly, due to the different stiffness of the paper of the corrugated pipe (depending on the difference in diameters - internal and external), the compressed air unstably stretches the corrugations and does not modify the corrugated pipe into a relatively smooth, or even not stretched at all, due to than the cut occurs in any part of the corrugation — along the top, along the depression, in the intervals between folds (in cross section), and often an oblique cut — from the top to the top — within the same corrugation due to the wrinkling of the corrugated pipe. Therefore, when straightening the cut hemispheres, uneven edges of the cut parts of the curtain are obtained

(especially when there is a cut in between the folds, which often happens), this makes it impossible to further automate subsequent

technological operations. Secondly, there is a danger of injury to operating personnel, since a constantly rotating circular knife (when the line is running) is practically in the service area of the line,

0 where the installer or operator has to fix the product (corrugated filter paper) when it seizes or fails for some reason when it passes through the inlet pipe.

5 The aim of the invention is to improve the reliability of product quality by obtaining smooth edges of the corrugated curtain of the product with a given number of corrugations and ensuring safety.

0 This goal is achieved by the fact that a device comprising a housing with a cutting mechanism located therein, consisting of an electric motor, on the shaft of which is fixedly rotating

5, a disk knife, equipped with casings, a mechanism for moving the product into the cutting zone in the form of a pneumatic cylinder mounted motionless on the product supply zone on columns, the rod of which is connected to the receiving

Q means, made in the form of a pipe with grooves, rigidly connected to the tray and flange, which can be moved on the columns fixed rigidly on the body, with catchers placed on the plate

5 housings made in the form of pins having rounded peaks and bevels with radii, side surfaces to reduce friction when in contact with products and to ensure reliable and accurate orientation

0 of one and only one of its corrugations, when lowering the rod in the place with the receiving means, in which the product is located, taken out of the service area into the cutting zone to measured lengths with a constantly rotating disk knife at the confluence of the corrugation: dividing it into absolutely equal two parts. Only a cut in place gives smooth surfaces to the edges of the parts of the curtain. Disposal of the product (corrugated

- filter paper) from servicing the line to cut it to measured lengths by moving the cylinder rod with the receiving means located on it, in which the product is currently located, constantly coming from the feed mechanism, with an automatic line, ensures safe servicing of this section lines. The tray eliminates the possibility of bloating corrugated filter paper and provides a stable

dimensional receipt of the corrugations in the receiving means when lowering.

Figure 1 shows the proposed device: figure 2 is a view a in figure 1; in Fig.3 is a section bB in Fig.2; figure 4 is a section bb in figure 2; figure 5 is a view of a at the initial position of the cylinder rod; Fig.6 is a design of catchers; in Fig.7 is a view of G in Figb; Fig.8 is a view of D in Fig.7.

The device for automatically cutting corrugated filter paper rolled into a pipe includes a housing 1, a cutting mechanism located therein in the form of an electric motor 2, a disk knife 3 is fixed to its shaft, and a mechanism for moving the product into the cutting zone in the form of a pneumatic cylinder 4 mounted under the feed zone motionlessly on the columns 5, rigidly fixed on the plate 6 of the housing 1, the rod 7 of the pneumatic cylinder 4 is connected to the receiving means, made in the form of a pipe 8 with a flange 9 and a tray 10, with the possibility of movement (lowering and lifting) on the columns. The cutting mechanism is located under the feed zone of the product and has catchers in the form of pins. The pipe 8 is made with a groove 12, and rounded edges of the inner surface with radii R so that the incoming corrugations 13 of article 14 (corrugated filter paper) freely pass into the pipe 8 without jamming and braking and can move freely along the axis when it is fixed. The catchers 11 are made with grooves 15 covering the circular knife 3, have rounded tops with radii RI, bevels 16 and 17, side surfaces 18 and 19 and bevels 20, 21 with rounded edges of radius r and radii n at the junction of the bevels and surfaces for reducing the slip coefficient when in contact with the paper corrugations 13 of the product 14, and also - eliminating damage to the paper corrugations - nadir, cuts, etc. and reliable and accurate fixation of one and only one corrugation.

The grooves 22 are used to adjust and install the catchers 11 to the required diameter of the hollow of the corrugation 13 of the product 14. The receiver 23 of the automatic line is a source of continuous supply of the product 14 to this device. By means of flag 24, sensor 25, the required number of corrugations 13 is counted and a command is given to turn on the pneumatic cylinder 4 (lowering and raising the rod 7).

By means of the flag 26 and the sensor 27, the pneumatic rod 7 is returned

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lindra 4 to its original position. Shrouds 28 cover the exposed parts of a continuously rotating circular knife 3.

The device operates as follows.

When feeding the article 14 from the receiver 24 of the automatic line, the corrugations 13 enter the receiving tube 8 through the tray 10. By means of the flag 24 and the sensor 25, a predetermined number of corrugations 13 of the article 14 is counted, which is fixed by the counter (not shown in Fig.), After the necessary the number of corrugations 13, a command is given to turn on the pneumatic cylinder 4, while the movement of the rod 7 downward, connected to the receiving pipe 8 through the flange 9, begins, and it, in turn, with the columns 5, along which the flange 9 moves. When moving the receiving pipe 8 with in her product 14, the last bends, one corrugation 13 of product 14 falls on the rounded peaks with a radius R1 of catchers 11, in any case slides from them, and also slides along the side surfaces 18 and 19, bevels 16 and 17 and is oriented closer to the trough corrugation 13, thereby pre-fixing one corrugation. Since the article 14 is rather rigid within the corrugation 13, the distortions of the corrugation 13 diagonally (in a longitudinal settlement) - in one catcher the corrugation 13 touches surface 18 with its bevel, and in the other - surface 19 - it does not occur. With further lowering of the rod 7 with the receiving pipe 8, the corrugation 13 of the product 14 touches (contacts) the bevels 20 and 21. In this case, the corrugation 13 is finally fixed by the catchers 11, as well as the rod 7 with the receiving pipe 8 continues to lower to the constantly rotating disk knife 3, a piece of product 14 is carried out on the measured length curtains exactly along the corrugation cavity 13. At the end of the stroke of the rod 7 with the receiving pipe 8 and after the length of the product 14 of the measured length, a flag 26 fixed to the end of the receiving pipe 8, the entrance to the groove of the sensor 27 gives return stock command 7, at which m takes the initial position to resume the cycle.

In this way, quality reliable reliable cutting of corrugated paper curtains to measured lengths is carried out. This makes it possible, due to the smooth edges of the cut parts of the product, to ensure high-quality execution of the further technological assembly operation and reduction of paper waste.

Claims (2)

1. An automatic cutting device for filtering corrugated paper rolled into a pipe, comprising a cutter mounted in the housing, consisting of an engine and a circular knife, a corrugation counting mechanism and a receiving means, characterized in that, in order to increase the reliability and quality of the cut by obtaining smooth edges of the corrugated curtains and to increase safety in operation, it contains a mechanism for moving the product into the cutting zone, including rigidly mounted on the column body and mounted motionless above the product feeding zone pneumatic cylinder to the columns and the receiving means is a tube with grooves and rigidly Figure 1 connected to the tube of the tray to arrange the product and the flange mounted on the columns and connected to the rod of the pneumatic cylinder, the cutting mechanism is located under the feed zone of the product and equipped with catchers for fixing the corrugation of the product, made in the form of pins having rounded tops, bevels and grooves for arranging a circular knife. 2. The device according to claim 1, with the exception that the cutting mechanism is equipped with shrouds located above the disk knife on the sides of the catchers. gf Fie. 2. FIG. 3 FIG. If // 3 8 at the initial position of the cylinder rod l "/ Ј / 6 l // 9V.5 X