KR102509178B1 - Simple film cutting device - Google Patents

Abstract

The present invention relates to a simple film cutting device capable of reducing vibration by eliminating the swaying motion that significantly induces vibration due to linear reciprocating and linear lifting movements of a link when a camshaft rotates by the drive of a motor. The film cutting device comprises: a lower base (10); a fixed block (20) which is mounted on the lower base (10) and fixed with fastening means; a camshaft (30) which has an eccentric cam (31) formed on a body thereof and is assembled to the fixed block (20) in a rotatable manner to rotate by the drive of a motor (M); a lower plate (40) which is linked to the camshaft (30) and moves up and down when the camshaft (30) rotates; a head (50) which is positioned above a pedestal (20a) mounted on the fixed block (20), and moves up and down with the lower plate (40) when the camshaft (30) rotates such that a cutter mounted underneath cuts the film placed on the pedestal (20a); a plurality of shafts (60) which are fitted into the fixed block (20) to move vertically so that the lower plate (40) and the head (50) can also move vertically, and due to the lower plate (40) fixed at lower portions thereof and the head (50) at upper portions thereof, move the lower plate (40) and head (50) up and down together when the camshaft (30) rotates; a link (70), of which one end is connected while accommodating the cam (31) therein and the other end is fixed to the lower plate (40) in a linear reciprocating movement manner, so as to move linearly back and forth by an eccentric distance when the cam (31) rotates; and linear motion means (80) which is assembled between the other end of the link (70) and the lower plate (40) to connect the link and the lower plate and to allow the linear reciprocating movement of the link (70) when the cam (31) rotates.

Description

Simple film cutting device {Simple film cutting device}

The present invention relates to a film cutting device, and more particularly, to reduce link vibration by shortening the length of a link connected to a cam of a shaft and making it linearly reciprocate, while simplifying the structure to increase manufacturing cost and productivity. Simple type film cutting It's about the device.

In general, a film cutting device is a device in which a head equipped with a cutter ascends and descends to cut a film exposed thereunder into a required shape.

As a technology related to a conventional cutting machine, a reciprocating lifting and lowering device having a height adjustment function of Registration Patent No. 10-1526276 and a cutting machine using the same were disclosed on June 9, 2015.

This prior registration patent is registered by the present applicant for invention, in a reciprocating lifting and lowering device composed of a spring plate that moves up and down from a fixed table, provided so as to be symmetrical on both sides of the fixed table, one end of which is fixed by a first shaft Upper link combined with; Provided to be symmetrical on both sides of the spring plate, one end coupled to the spring plate by a second shaft and the other end coupled to the upper link by a third shaft lower link; An extension formed extending upward from either upper link; A connecting link connecting between the extension part and the third shaft connecting the upper and lower links on the other side where the extension part is not formed; A first camshaft that is fixed to a fixed table and rotates; a driving link having one end coupled to the eccentric first camshaft and the other end connected to the third shaft; A length adjuster for adjusting the length of the driving link;

In the registered patent structured as above, since the upper and lower links are provided symmetrically on both sides and both links are operated at the same angle, there is no fear of the lifting device being leveled, and the power is distributed to both links for stable lifting and lowering. Although this effect is achieved, since it is composed of many parts, the structure is very complicated, so that not only productivity is lowered, but also a lot of cost is required for manufacturing.

In addition, since the links connected to many camshafts simultaneously oscillate, there is a problem in that precision is lowered due to severe vibration during an object cutting operation.

Republic of Korea Patent No. 10-1526276

Therefore, the present invention is to solve the various problems of the conventional cutting machine as described above, the problem to be solved is to perform the linear reciprocating movement and linear lifting movement when the shaft rotates by the drive of the motor Vibration It is to provide a simple type film cutting device capable of reducing vibration by removing the oscillation motion that causes a large amount of vibration.

Another problem to be solved by the present invention is to provide a simple type film cutting device capable of increasing productivity and reducing manufacturing cost by reducing the parts involved in changing the swinging motion of the cam into the lifting motion of the head.

The simple type film cutting device of the present invention for achieving the above object is a lower base;

a fixing block mounted on the lower base and fixed by a fastening means;

A camshaft having an eccentric cam formed on the body and rotatably assembled to the fixing block to rotate by driving a motor;

a lower plate interlocked with the camshaft and moving up and down when the camshaft rotates;

a head located above the pedestal mounted on the fixed block, moving up and down with a lower plate interlocked when the camshaft rotates, so that a cutter mounted thereunder cuts the film placed on the pedestal;

A plurality of shafts that are inserted into a fixing block so that the lower plate and the head can be moved up and down, and the lower plate and the head are fixed to the upper part of the lower plate to move the lower plate and the head up and down together when the camshaft rotates;

a link having one end connected while accommodating the cam and the other end fixed to the lower plate to be capable of linear reciprocating motion, and linearly reciprocating as much as the eccentric distance when the cam rotates; and

It includes; a linear motion means that is assembled between the other end of the link and the lower plate to connect them, and allows the link to linearly reciprocate when the cam rotates.

The present invention further includes a weight reducing means to offset the weight of the lower plate and the parts loaded on the lower plate,

Here, the weight reduction means is fixed to the fixed block and a pillar extending below the lower plate;

A stopper fixed to the lower end of the pillar or assembled to be adjustable in height; and

It includes; an elastic member assembled to a pillar between the lower plate and the stopper to support and support the lower plate.

The fixing block of the present invention extends a plurality of supports through which shaft assembly holes pass through the corners of the upper plate, fastening holes are penetrated on the outside of each support so that they can be fixed to the lower base with bolts, and both ends of the camshaft can be rotated on both sides of the lower side. The passage is cut so that it can be accommodated, and an accommodation hole wider than the passage is penetrated on the inside communicating with the passage.

The linear motion means of the present invention includes a rail fixed to the lower plate to coincide with the rotational direction of the cam; and

A slide block fixed to the other end of the link and linearly reciprocating along with the link whenever the cam rotates once in a state where it is inserted into the rail.

The present invention configured as described above has the advantage of reducing vibration because the link does not oscillate by performing linear reciprocating movement and linear ascending movement when the shaft rotates, thereby securing the precision of cutting. there is.

In addition, the present invention has the advantage of being able to realize miniaturization of the device by reducing the parts involved in changing the swinging motion of the single-acting cam to the lifting motion of the head.

In addition, the present invention has the advantage of increasing productivity according to manufacturing and reducing cost by implementing a slim device.

1 is a front view of the present invention
2 is a side view of the present invention
Figure 3 is a perspective view showing an assembly assembled on the lower plate of the present invention
Figure 4 is an exploded perspective view of Figure 3
Figure 5 is a front image showing the assembly assembled on the lower plate of the present invention
Figure 6 is a three-dimensional image of the state in which the fixing block is removed from Figure 5
7 is a perspective view of the lower base of the present invention
8 is a front image of the fixed block of the present invention
9 is a rear image of the fixed block of the present invention
10 is a front view showing the camshaft of the present invention
11 is an image showing the camshaft of the present invention
12 is an image showing the lower plate of the present invention
13 is an image showing the link of the present invention
14 is a conceptual diagram showing a stroke generated according to a trajectory generated when the camshaft rotates according to the present invention;
15 is a front view showing that the head of the present invention is lowered and located at its bottom dead center;
16 is a front view showing that the head of the present invention is elevated and located at its top dead center;

Hereinafter, the configuration of a simple type film cutting device according to the present invention will be described in detail with reference to the accompanying drawings.

The simple type film cutting device (A) of the present invention includes a lower base (10);

A fixing block 20 mounted on the lower base 10 and fixed by a fastening means;

A camshaft 30 having an eccentric cam 31 formed on the body and rotatably assembled to the fixing block 20 to rotate by driving the motor M;

a lower plate 40 that is interlocked with the camshaft 30 and moves up and down when the camshaft 30 rotates;

The film is located above the pedestal 20a mounted on the fixed block 20 and moves up and down together with the lower plate 40 interlocked when the camshaft 30 rotates so that the cutter mounted thereunder is placed on the pedestal 20a. Head 50 for cutting;

The lower plate 40 and the head 50 are inserted into the fixing block 20 so as to be able to move up and down so that the head 50 can be interlocked, and the lower plate 40 is fixed to the lower part and the head 50 is fixed to the upper part, respectively, so that the camshaft 30 A plurality of shafts 60 that raise and lower the lower plate 40 and the head 50 together when they rotate;

A link 70 having one end connected while accommodating the cam 31 and the other end fixed to the lower plate 40 so as to be capable of linear reciprocating motion, and linearly reciprocating by an eccentric distance when the cam 31 rotates; and

It includes a linear motion means 80 that is assembled between the other end of the link 70 and the lower plate 40 to connect them and allow the link 70 to linearly reciprocate when the cam 31 rotates. .

The present invention further includes a weight reducing means 90 to offset the weight of the lower plate 40 and the components loaded on the lower plate 40 .

The present invention configured as described above is a device that simplifies the power transmission system from the motor M as a driving source to the head 50 that finally cuts the film. That is, it is composed of a motor (M), a camshaft 30, a link 70, a linear motion means 80, a lower plate 40, a shaft 60, and a head 50, and their interlocking structure is simplified to make a slim A device was implemented.

As shown in FIG. 7, the lower base 10 is located at the bottom and is placed on the floor of the installation place. The lower base 10 has a certain height and is provided with a space to accommodate parts therein, ribs 11 protrude on the inner bottom to have rigidity, and a support 12 protrudes upward at the corner portion, The fixing block 20 is mounted and fixed. A tapped hole 13 is machined on the top of the support 12 so that the mounted fixing block 20 can be fastened and fixed with a bolt B. The lower base 10 is not limited to the shape shown in the drawings and can be made in various shapes according to convenience.

As shown in FIGS. 5 to 6 and 8 to 9, the fixing block 20 extends a plurality of supports 22 through which shaft assembly holes 21 pass through the corners of the upper plate, and the outer side of each support 22 In the lower base 10, a fastening hole 23 is penetrated at a position coincident with the tapped hole 13 so that it can be fixed with a bolt B, and both ends of the camshaft 30 are rotatably accommodated on both sides of the lower base. The passage 24 is cut so as to be able to pass through, and the receiving hole 25 wider than the passage 24 passes through the inner side communicating with the passage 24.

The fixing block 20 configured as described above matches the tapped hole 13 and the fastening hole 23 in a state in which the support 22 is mounted on the support 12 of the lower base 10, and then bolts thereto ( When B) is fastened, it is integrally fixed with the lower base 10.

The camshaft 30 is a rotating body that moves the head 50 up and down by being rotated by a driving motor M. The camshaft 30 is rotatably fixed to the fixing block 20 as shown in FIGS. 10 to 11, and a cam 31 protrudes to one side in the center of the body and is eccentric. The camshaft 30 is seated in the receiving hole 25 located therein through the passage 24 of the fixing block 20 and is rotated by the driving of the motor M while supported by the bearing.

Specifically, it is assumed that the eccentric distance of the cam 31 is 10 mm as shown in FIG. 14 . The solid line indicates that the cam 31 is eccentric 10 mm above the center C of the camshaft 30. In this state, when the motor M is driven and the camshaft 30 rotates 90 degrees in the direction of the arrow, the center of the cam 31 becomes the same height as the camshaft 30, and then rotates another 90 degrees to rotate 180 degrees from the origin. As indicated by the double-dotted line, the cam 31 is eccentric 10 mm below the center of the camshaft 30.

Therefore, when the camshaft 30 rotates once, the cam 31 is eccentric twice by 10mm at the top and 10mm at the bottom of the camshaft 30, so the head 50 that moves up and down in conjunction with the cam 31 moves 20mm is raised and lowered, and the stroke of the 20mm head 50 becomes.

The lower plate 40 is interlocked with the camshaft 30 and moves up and down when the camshaft 30 rotates. As shown in FIGS. 1 and 2, the shaft 60 is fixed to the lower end and a link 70 is mounted to transmit the linear motion of the link 70 to the shaft 60.

The lower plate 40 is configured in a plate-like shape as shown in FIG. 12, and a shaft assembly hole 41 into which the shaft 60 is inserted penetrates at its corner, and a tap hole for fastening the rail 81 on both sides of the upper plate. (42) is processed.

The head 50 is fastened and fixed to the upper portion of the shaft 60 so as to be positioned above the pedestal 20a mounted on the fixing block 20. The head 50 moves up and down together with the shaft 60 when the camshaft 30 rotates, and the cutter mounted on the bottom thereof cuts the film placed on the support 20a. Since this is the same as or similar to a known one, specific drawings will be omitted.

The shaft 60 is inserted into the shaft assembly hole 21 of the fixing block 20 so that the lower plate 40 and the head 50 can be interlocked, and the lower plate 40 at the lower part and the head at the upper part ( 50) are respectively fixed so that when the camshaft 30 rotates, the lower plate 40 and the head 50 move up and down together. A plurality of shafts 60 are used, and four are used in the present invention.

As shown in FIG. 13, one end of the link 70 is connected while accommodating the cam 31 and the other end is fixed to the lower plate 40 so as to be capable of linear reciprocating motion, and the eccentric distance generated when the cam 31 rotates reciprocating in a straight line as much as An assembly hole 71 accommodating the cam 31 passes through the link 70 at the top, and a plurality of assembly holes 71 can be used. As an example, the present invention uses two as shown in the drawing. In addition, a plate-shaped fixing piece 73 with a tapped hole 72 is prepared so that the slide block 82 can be fastened and fixed at the bottom, and a reinforcing rib is provided between the fixing piece 73 and the outer circumferential surface on which the assembly hole 71 is formed. (74) is padded.

The linear movement means 80 is assembled between the other end of the link 70, that is, the fixing piece 73 and the lower plate 40 to connect them, and the link 70 by the eccentric distance generated when the cam 31 rotates. ) enables linear reciprocating motion.

The linear movement means 80 includes a rail 81 fastened to the tapped hole 24 of the lower plate 40 to match the rotational direction of the cam 31; and

A slide block 82 that is fixed to the fixing piece 73 of the link 70 and linearly reciprocates along with the link 70 whenever the cam 31 rotates once in a state where it is inserted into the rail 81; do.

Since the slide block 82 is inserted into the rail 81 fixed to the lower plate 40 and the slide block 82 is fixed to the link 70, when the cam 31 rotates, it reciprocates in a straight line along that direction. make a move

On the other hand, the present invention may further include a weight reducing means 90 to offset the weight of the lower plate 40 and the components loaded on the lower plate 40.

The weight reduction means 90 is fixed to the fixing block 20 and a pillar 91 extending below the lower plate 40;

A stopper 92 fixed to the lower end of the pillar 91 or assembled to be adjustable in height; and

An elastic member 93 assembled to the pillar 91 between the lower plate 40 and the stopper 92 to support the lower plate 40; includes.

The elastic member 93 may use a coil spring as shown in the drawing, and the coil spring is supported by the stopper 92 located at the bottom and is attached to the lower plate 40 and the lower plate 40 mounted thereon. Since the weight of the loaded parts is absorbed and reduced, when the camshaft 30 rotates, the head 50 naturally rises and falls while cutting the film at high speed.

Next, the process of cutting the film by the film cutting device (A) of the present invention will be described.

As shown in FIG. 15, the head 50 is lowered and the distance between the pedestal 20a and the head 50 is 128 mm. In this state, since the head 50 is lowered, the cutter mounted on the head 50 is placed on the pedestal 20a. The film is cut. At this time, the cam 31 is located below the center of the camshaft C and is located in the direction of 180 degrees, as indicated by the dotted-dashed line in FIG. 14 .

In this state, when the cam 31 indicated by the solid line in FIG. 14 is rotated in the direction of the arrow by the driving of the motor M and reaches the position of 270 degrees, the cam 31 moves up and down by 10 mm so that the center is at the same height as the camshaft 30. , and then further rotated by 90 degrees to reach the 0 degree position, the cam 31 is moved up and down by an additional 10 mm so that the cam 31 is eccentric 10 mm above the center of the camshaft 30.

In this process, the link 70 descends along the trajectory of the cam 31 while linearly moving in the direction in which the cam 31 is pushed according to the guidance of the linear motion means 80, and then moves in the direction in which the cam 31 is pushed , That is, it moves in a straight line again in the opposite direction and moves up and down to return to the original position.

Therefore, since the trajectory drawn while the camshaft 30 rotates half a turn is eccentric so as to protrude 10mm downward and 10mm upward with respect to the center C of the camshaft 30, the total eccentric distance is 10mm+10mm=20mm. This can be easily confirmed by the fact that the cam 31 completes a 180-degree rotation from the initial state indicated by the dotted-dashed line, and its eccentric position is located 20 mm above as indicated by the solid line.

Accordingly, when the camshaft 30 continuously rotates, the link 70 and the lower plate 40 equipped with the link 70 rise by 20 mm and then descend by 20 mm repeatedly, so that the head 50 interlocked with them It also goes up and down the same distance.

When the head 50 descends by 20 mm, the point becomes the bottom dead center, and when the head 50 moves up and down by 20 mm, the point becomes the top dead center, so the stroke becomes 20 mm. Therefore, when the head 50 reaches the bottom dead center, the cutter mounted on the head 50 cuts the film placed on the pedestal 20a, and when the head 50 reaches the top dead center, the cutting is completed and a new film is placed in between. When supplied to the pedestal 20a, it descends and continuously cuts the film.

In the present invention configured as described above, when the camshaft 30 rotates, the link 70 moves linearly by the linear motion means 80 to raise and lower the lower plate 40, and the head 50 interlocked with the lower plate 40 ) cuts the film while moving up and down, so the connection system from the camshaft 30 to the head 50 is simple.

Therefore, the present invention uses one cam and since the link 70 interlocked with the cam moves linearly and reciprocally, it is possible to reduce the vibration by removing the rocking motion that causes the large vibration, and to secure the precision of cutting with the reduced vibration. It can be said that it is an invention with inventive step because it has a point that can be made, a point that can realize miniaturization and slimming of a product with a simple configuration, and a point that can increase productivity and reduce cost accordingly.

A: simple type film cutting device 10: lower base
20: fixed block 30: camshaft
31: cam 40: lower plate 50: head 60: shaft
70: Link 80: Linear motion means
90: weight reduction means

Claims (4)

lower base 10;
A fixing block 20 mounted on the lower base 10 and fixed by a fastening means;
A camshaft 30 having an eccentric cam 31 formed on the body and rotatably assembled to the fixing block 20 to rotate by driving the motor M;
A lower plate 40 that is interlocked with the camshaft 30 and moves up and down when the camshaft 30 rotates;
It is located above the pedestal 20a mounted on the fixed block 20, and moves up and down together with the lower plate 40 interlocked when the camshaft 30 rotates, so that the cutter mounted on the lower part cuts the film placed on the pedestal 20a. Cutting head 50;
The lower plate 40 and the head 50 are inserted into the fixing block 20 so as to be able to move up and down so that the head 50 can be interlocked, and the lower plate 40 is fixed to the lower part and the head 50 is fixed to the upper part, respectively, so that the camshaft 30 A plurality of shafts 60 that raise and lower the lower plate 40 and the head 50 together when rotating;
A link 70 having one end connected while accommodating the cam 31 and the other end fixed to the lower plate 40 so as to be reciprocally linearly reciprocated by an eccentric distance when the cam 31 rotates;
A linear motion means 80 that is assembled between the other end of the link 70 and the lower plate 40 to connect them and enable the link 70 to linearly reciprocate when the cam 31 rotates; and
A weight reducing means 90 to offset the weight of the lower plate 40 and the parts loaded on the lower plate 40; includes,

Here, the fixing block 20 extends a plurality of supports 22 through which the shaft assembly holes 21 pass through the corners of the top plate, and bolts B are attached to the lower base 10 on the outside of each support 22. The fastening hole 23 is penetrated so that it can be fixed, and the passage 24 is cut so as to rotatably accommodate both ends of the camshaft 30 on both sides of the lower side, and the passage 24 communicates with the passage 24 on the inside. ) is passed through the receiving hole 25 wider than;

The linear motion means 80 includes a rail 81 fixed to the lower plate 40 to coincide with the rotational direction of the cam 31; and
A slide block 82 that is fixed to the other end of the link 70 and linearly reciprocates along with the link 70 whenever the cam 31 rotates once in a state where it is fitted to the rail 81; includes,

The weight reduction means 90 includes a pillar 91 fixed to the fixing block 20 and extending below the lower plate 40;
A stopper 92 fixed to the lower end of the pillar 91 or assembled to be adjustable in height; and
A simple type film cutting device comprising an elastic member 93 assembled to the pillar 91 between the lower plate 40 and the stopper 92 to support and support the lower plate 40. delete delete delete

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