KR20060122032A - Rotary cutter and method for adjusting fixing angle of stationary blade in rotary cutter - Google Patents

Abstract

A rotary cutter and a method of adjusting a fixing angle of a stationary blade in a rotary cutter are provided to simply and precisely adjust a blade to reduce maintenance cost. A rotary cutter includes a shaker(52), a stationary blade(53), a shaking restriction device(56), an elastic body(57), and a shaking device(59). The shaker supports a stationary cutter about a shaft in a shaking manner. The stationary blade projects from one side of the shaker. The shaking restriction device restricts shaking of the shaker in one direction. The elastic body biases the shaker in the restricted direction. The shaking device forcedly shakes the shaker.

Description

ROTARY CUTTER AND METHOD FOR ADJUSTING FIXING ANGLE OF STATIONARY BLADE IN ROTARY CUTTER}

1 is an explanatory diagram of a rotary cutter device of the prior art;

2 is a conceptual view of the present invention rotary cutter device.

3 is an exploded view of the fixed cutter.

4 is an explanatory view of a method of adjusting a fixed blade at an angle of 0 °.

Explanatory drawing at the time of the fixed blade oscillation of a rotary cutter device.

6 is an explanatory view of the principle that can form a plurality of cutting points of the fixed blade and the rotary blade.

7 is an explanatory diagram of a protrusion amount adjusting structure of a fixed blade;

<Description of the code>

10- cutter drum

12- rotary blade

40-feed roller

41- guide plate

50- fixed cutter

51- axis

52- oscillator

53- fixed blade

54-frame

55-bearing

56-Adjustment bolt (fluctuation control means)

57- Spring (elastic body)

58- link member

59- swinging means

60- universal motor

The present invention relates to a rotary cutter device applicable to a labeling machine, a printing press, and the like. More specifically, the present invention relates to a rotating cutter device for continuously cutting a tape-like sheet to an accurate length and a method for adjusting the mounting angle of the fixed blade.

1 shows a model of a rotary cutter device arranged in a labeling machine.

The conventional rotary cutter device is provided with the cutter drum 10 rotated in one direction about the support shaft 11, and the fixed cutter 20 facing the cutter drum 10. The fixed cutter 20 has a fixed blade. (21) is protruded, and the opposing distance between the cutting edge of the fixed blade 21 and the rotary blade 12 of the cutter drum 10 can be adjusted manually. The cutter drum 10 is provided with the rotary blade 12 which protruded in the outer peripheral surface, and the sub motor 30 which drove the cutter drum 10, and the sub motor 30 is electrically connected with the control unit 31. As shown in FIG. . The supply roller 32 which consists of a pair of rotary rollers for supplying the roll label L also has the sub motor 33 as a drive source, and is electrically connected with the control unit 31. As shown in FIG. In addition, a photoconductor (not shown) is arranged along the roll label transfer path, and the cutting gap mark displayed on the roll label is read and the information is input to the control unit 31. The control unit 31 operates at the speed of the machine. In response to this, a program for controlling the rotation of the cutter drum 10 and the sub-motors 30 and 33 of the feed roller 32 is incorporated so that the roll label L can be cut to a predetermined length.

The following improvements have been made to the rotary cutter device.

(1) It is necessary to readjust the spacing between the two blades 12 and 21 when the blades of either the rotary blade 12 or the fixed blade 21 are replaced or when the blades wear out. 21), the operation of screwing the fixed cutter 20 side and fine-adjusting the gap while looking at the end of the knife and the cutting operation of actually cutting the label must be repeated several times. in need.

Particularly, in the rotary cutter device of the labeling machine, a high speed cutting of about 400 to 700 sheets per minute is applied to an extremely thin roll label paper, so that the precision of the adjustment of the blades 12 and 21 greatly affects the sharpness of the label. The adjustment of the two blades determines the difficulty.

(2) If the blades 12, 21 are inaccurately adjusted and the tip of the knife is slightly over, either of the blades 12, 21 will be broken, or if a small gap is created between the blades 12, 21, The cut surface becomes jagged and the problem of bad label generation occurs.

(3) The timing of rotation of the cutter drum 10 and the feed roller 32 when the operation is resumed after stopping the operation of the rotary cutter device due to the sub-control of the rotation of the cutter drum 10 and the feed roller 32. The roll label L cannot be cut until this coincides.

At this time, there is room for improvement in terms of operating efficiency of the labeling machine as well as operating efficiency of the rotary cutter device.

(4) The sub-motors 30 and 33 require an auxiliary equipment such as an encoder or a transmission or a control program, and if such auxiliary equipment is included, the cost of the sub-motors 30 and 33 is increased by several times or more compared to general general-purpose motors. Cause.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for adjusting the mounting angle of the fixed blade in the rotary cutter device and the rotary cutter device, which can easily and accurately adjust the cutting edge.

Another object of the present invention is to provide a method for adjusting the mounting angle of the fixed blade in the rotary cutter device and the rotary cutter device which can reduce the cost of the device.

First, the present invention is a rotary cutter device having a cutter drum which rotates in one direction about a support axis and has a rotary blade on the outer periphery and a fixed cutter disposed opposite to the cutter drum, wherein the fixed cutter can swing around the support shaft. Oscillating body to be promulgated, a fixed blade protruding to one side of the oscillating body, oscillation regulating means for regulating oscillation toward one direction of the oscillating body, and an elastic body for providing normal force to the oscillating body in the direction of regulating the oscillation And a rocking means for forcing a rocking force to the rocking body, the contact portion between the elastic body and the rocking body, the contact portion between the rocking restraint means and the rocking body, and the point of attachment of the pivot of the rocking body. It provides a rotary cutter device, characterized in that configured to support the body.

In the above rotary cutter device, the swing restricting means may be constituted by adjusting bolts which are fitted to the stop members arranged opposite to the side of the swinging body, and the adjustment bolt is rotated and the angle of installation of the fixed blade integral with the swinging body can be adjusted. good.

In the rotary cutter device, the drive source of the cutter drum may be a general-purpose motor.

In the rotary cutter device, the rocking means may be configured to continue the rotation of the cutter drum when the fixed blade and the rocking body integrally swing.

Secondly, the present invention manually rotates the cutter drum using the rotary cutter device, and the rotary blade passing through the fixed blade does not bond to the fixed blade and rotates the adjustment bolt to a position where the swinging body does not swing. In the rotary cutter device which adjusts the installation angle of a fuselage | body, it provides the adjustment method of the installation angle of a fixed blade.

Example

Embodiments of the present invention will be described below with reference to the drawings.

(1) Outline of Rotary Cutter Device

2 shows a model picture of a rotary cutter device.

In the right direction in FIG. 2, a feed roller 40 composed of a pair of rollers is positioned, and at the same time, a guide plate 41 for guiding a roll label is located in front of the feed roller 40, and the left side of the guide plate 41 is located. The rotary cutter unit is located at.

A gear mechanism can be sufficiently coped without using a sub-motor as a drive source of the feed roller 40.

The rotary cutter device is constructed according to the cutter drum 10 rotated in one direction about the support shaft 11 and the fixed cutter 50 facing and installed on the cutter drum 10, but the present invention is the cutter drum. The use of the sub-motor as the driving source of the 10 and the supply roller 40 and the configuration of the fixed cutter 50 in a swinging manner are different from those of the conventional apparatus. Each part will be described below.

(2) cutter drum

The cutter drum 10 protrudes the rotary blade 12 on the outer peripheral surface thereof.

The present invention uses a low-cost general-purpose motor 60 as a driving source of the cutter drum 10 without using an expensive sub-motor or a sub-control program.

The reason why the general-purpose motor 60 can be used as a drive source of the cutter drum 10 is because the fixed cutter 50 is swinged and the cutter drum 10 is rotated so that the operation of the rotary cutter device can be stopped.

(3) fixed cutter

The fixed cutter 50 faces the clockwise direction of the fixed blade 53 and the oscillating body 52 protruding to one side of the oscillating body 52 and the oscillating body 52 which are oscillated around the support shaft 51. It is provided with the rocking | fluctuation regulation means which regulates rocking | fluctuation, the elastic body which gives a normal force to the rocking body 52 in a clockwise direction, and the rocking means which forcibly gives a rocking force to the rocking body 52. As shown in FIG.

[Flux]

3 shows an example of the fixed cutter 50 excluding the swinging means.

The upper and lower plates of the frame 54 whose overall shape is substantially nose-shaped are provided with bearings 55 and 55 on the same vertical line, and the support shafts 51 and 51 which protrude upward and downward of the swinging body 52 are bearings ( 55, 55) is rotatably inserted.

The bearing shafts 51 and 51 of the swinging body 52 may be directly attached to the frame 54 without using the bearing 55.

On the other hand, although the side surface of the oscillation body 52 in which the fixed blade 53 is provided may be flat, if the side surface of the side of the supply roller 40 is formed in an oblique chamfer form with the fixed blade 53 interposed, a roll label may be used. There is an advantage that can guide the tip of the blade smoothly.

[Fluctuation control means]

On one side of the frame 54 facing the side of the swinging body 52, an adjustment bolt 56, which is a swing restricting means, is provided through the side close to the fixed blade 53 with respect to the support shaft 51.

By joining the tip of the adjustment bolt 56 to the side surface of the swinging body 52, it not only functions as a stopper member that constantly regulates the clockwise swinging of the swinging body 52, By adjusting the amount of protrusion, it functions also as a member which adjusts the installation angle of the oscillation body 52, ie, the installation angle of the fixed blade 53. As shown in FIG.

[Elastic body]

Between the same side of the frame 54 in which the adjusting bolt 56 is provided and the swinging body 52, the spring 57 which is an elastic body is remodeled in a contracted state.

The spring 57 has a function of absorbing the swing of the protruding portion of the swinging body 52, a function of supporting the swinging body 52 in the absence of rocking, and a knife edge of the fixed blade 53 and the rotary blade 12. An elastic member having a function of allowing the swinging of the swinging body 52 to be adjusted to adjust the side surface of the swinging body 52 to the adjusting bolt 56 so that the spring shaft 51 acts as usual. To the opposite side of the fixing blade (53).

That is, the adjustment ball 56, the support shaft portion of the swinging body 52, and the spring 57 are arranged in a side close to the cutter drum 10. As shown in FIG.

The fluctuation restricting means is not limited to the illustrated form, and the fluctuation restricting means may apply a known means capable of adjusting the amount of protrusion other than the bolt.

In addition, the elastic body may also be applied to various elastic members in addition to the coil spring, and the elastic body may be mounted so as to generate a tensile force in the above-mentioned biasing direction as well as the shape of the elastic body.

[Swaying means]

As shown in Fig. 2, the link member 58 extends on the opposite side of the fixed blade 32 of the swinging body 52, and the end of the link member 58 is connected to the swinging means 59.

The swinging means 59 is for forcibly rocking the fixed blade 52 and the integral rocking body 52 and stopping cutting of the roll label. For example, a solenoid displaced by energization, various fluid cylinders, screws Although a transfer mechanism can be used, an air cylinder with a simple structure and fast operation speed is very suitable.

The operation of the swinging means 59 may be manual control, but may be an automatic control that detects an operation stop or an interruption of the labeling machine as an electrical signal and coordinates and controls the detection signal. This automatic control does not require a particularly complicated program. Very simple to control without.

(4) action

The operation of the rotary cutter device will be described below.

[Support structure of fixed blade]

The rotary cutter device according to the present invention is configured to be able to support the swinging body 52 having the fixed blade 53 at three points as shown in FIG. 4.

When the contact portion between the spring 57 and the oscillator 52 is P1, the contact portion between the adjustment bolt 56 and the oscillator 52 is P2, and the protruding portion of the support shaft 51 of the oscillator 52 is P3. The fixed blade 53 and the integral rocking body 52 are supported by the above three points in a state where there is no rocking.

It is extremely difficult to detect the support shaft 51 without bearing the displacement center of the pivot shaft 51 completely because only the bearing is supported by the bearing.

By combining and using the spring 57 and the adjusting bolt 56 as in the present invention, the play of the bearing is influenced. It is possible to stop the swinging body 52 at a fixed position.

The contact portion P1 between the spring 57 and the oscillation body 52 becomes an inverted point by adopting a configuration in which the adjusting bolt 56 and the spring 57 are disposed before and after the support shaft 51. The contact portion P2 between the bolt 56 and the oscillation body 52 becomes a point so that the clearance of the protruding portion P3 is substantially absent in order to bias the protruding portion P3 of the support shaft 51 of the oscillating body 52 in one direction.

Therefore, the swinging center of the swinging body 52 does not depend on the magnitude of the swinging of the bearing, and does not change its position.

[Adjustment of installation angle of fixed blade]

Fine adjustment of the cutting edge 53 of the fixed blade 50 and the rotary blade 12 of the cutter drum 10 that constitutes the fixed cutter 50 is performed by reverse operation of the adjustment bolt 56 and reverse operation of the cutter drum 10. The specific knife tip adjustment method is explained below.

As shown in FIG. 4, when the cutter drum 10 is manually rotated in the reverse direction and the rotary blade 12 passes from the downstream side to the upstream side (the right direction in the figure) of the fixed blade 53, the oscillating body ( 52) to see if it swings.

When the rotary blade 53 is joined to the fixed blade 12 and the swinging body 52 contracts the spring 57 and swings in the counterclockwise direction about the leading portion of the support shaft 51, the fixed blade 12 Of the cutting edge is to enter the rotary blade 12 side than the predetermined cutting point P4.

According to the swing amount of the swinging body 52, the adjustment bolt 56 is rotated and the installation angle of the swinging body 52 is finely adjusted.

In addition, if the rocking | fluctuation of the oscillation body 52 is not confirmed at the time of passing the rotary blade 53, the point becomes that the knife point of the fixed blade 53 corresponded to the predetermined cutting point P4.

In this way, the cutter drum 10 can be rotated slowly to check the presence or absence of oscillation of the swinging body 52, so that the mounting angle of the fixed blade 53 can be adjusted simply and accurately. Gauges are not necessary at all for the adjustment work that matches the tip of the knife to a predetermined cutting point P4.

[When cutting]

In Fig. 2, the cutter drum 10 is rotated counterclockwise by the drive of the general-purpose motor 60. In this state, when the continuous feeding of the roll label by the feed roller 40 is started, the roll label is guide plate. It is conveyed to the rotary cutter device via (41) and passes between the cutter drum (10) and the fixed cutter (50).

As soon as the rotary blade 12 of the cutter drum 10 passes through the fixed blade 53 of the fixed cutter 50, the roll label is cut to a predetermined length dimension.

When the label is cut, the rotational force in the clockwise direction acts on the oscillating body 52, but the oscillating body 52 does not oscillate because this force is supported by the adjusting bolt 56 joined to the side of the oscillating body 52. Keep stopped.

Further, as described above, since the holding portion, which is the swinging center of the swinging body 52, does not swing, and the predetermined cutting point P4 of the two blades 12, 53 is not displaced, the label can be cut efficiently and cut to a clean cutting surface. Can be.

[Interruption of cutting]

It is necessary to temporarily stop cutting by the rotary cutter device, for example, when replacing a roll label.

When the cutting is stopped, the feed of the roll label is stopped and the fixed cutter 50 is forcibly rocked. At this time, the rotation of the cutter drum 10 is continued.

FIG. 5 shows the rotary cutter device at the time of stopping. When the rocking means 59 of the fixed cutter 50 is operated in the extending direction, the ring member 58 is used and the rocking body 52 integral with the fixed blade 53. ) Swings in the counterclockwise direction about the support shaft 51 while compressing and deforming the spring 57. This swing angle θ is sufficient to be about 5 degrees to 9 degrees.

Since a gap is generated between the fixed blade 53 and the rotary blade 12 with swinging of the swinging body 52, cutting is impossible even if the cutter drum 10 is rotating.

[Resume cutting]

The rotation cutter device using the conventional sub-motor has a long waiting time until the operation resumes.

On the contrary, in the present invention, since the rotation of the cutter drum 10 is continued even during the interruption, cutting of the label can be quickly resumed simply by releasing the extension of the swinging means 59 and returning the swinging body 52 to its original position. Can be.

That is, when the extension of the swinging means 59 is released, the spring 57 is pressed by the accumulated spring force, and the swinging body 52 swings clockwise about the support shaft 51 and the The side is joined to the adjusting bolt 56 and the swing is regulated.

As a result, the swinging body 52 is supported once again in a state where there is no rocking by three points of two contact portions P1, P2 and the holding portion P3 as shown in Fig. 4, so that the fixed blade 53 is placed at a predetermined cutting point P4. Return.

When the cutting operation is resumed, since the swinging body 52 automatically returns to its original position, it is unnecessary to readjust the mounting angle of the fixed blade 53.

[When blade wears]

The fixed blade 53 or the rotary blade 12 is worn by cutting the label.

In the present invention, when the blades 53 and 12 are worn, the cutting bolt P4 can be newly installed by slightly rotating the adjusting bolt 56 in the retracting direction.

As a result, the service life of the rotary cutter device is significantly improved.

The principle which can form a new cutting point P4 is demonstrated by FIG.

In FIG. 6, P5 represents the rotation center of the fixed blade 53, and P6 represents the rotation center of the rotary blade 12. In FIG.

The swinging body 53 is swinging type, but the swinging center of the fixed blade 53 does not displace as described above. The rotational center of the rotary blade 12 also does not shift.

Therefore, if the first cutting point P 41 is set on the label supply side (upper side in the figure) than a straight line connecting the centers of the two edges 53 and 12, the fixed blade 53 swings to the swing center P5 in accordance with the wear of the blade. By d, the cutting point P 42 and P 4n can be newly formed.

The limit of the formation position of the new cutting point P (4e) can be formed until it reaches a straight line connecting the centers of both edges (53, 12).

Even if the fixed blade 53 is configured to be swingable in this manner, an accurate cutting point can be secured until the swinging center is bent.

In addition, since the swing radius of the fixed blade 53 and the pitch of the adjustment bolt 56 are known, the swing angle of the fixed blade 53 according to the rotation angle of the adjustment bolt 56 is calculated in advance by calculation. In this way, the adjustment bolt 56 can be rotated by the required angle to form a new cutting point according to the amount of wear on the blade.

(5) Other Examples

FIG. 7 shows another embodiment in which the vertical degree of the fixed blade 53 of the fixed cutter 50 can be adjusted.

On one side of the swinging body 52, a plurality of bolt holes 52b provided on the rear surface of the swinging body 52 while being provided with a receiving port 52a having a sphere width capable of receiving the fixed blade 53 are provided. The contact hole 52c communicates with the collaborative space between the bottom and the receiving port 52a.

The contact hole 52c accommodates the rod 52d pressed against the back of the fixed blade 53 and rotates the fastening bolt 52e screwed into the bolt hole 52b to use the rod 52d. 53 is to adjust the fine adjustment of the vertical degree.

Moreover, many fixing screws 52f are provided in the side of the receiving port 52a, and the fixed blade 53 which finished adjustment of the protrusion amount can be pressed and fixed to the side surface of the receiving port 52a.

Moreover, although the case where the roll label was cut | disconnected was demonstrated above, the cutting edge of either one of the rotary blade 12 or the fixed blade 63 may be formed intermittently, and a sewing machine graduation may be put.

The present invention has at least the following unique effects.

(1) It is configured to support the fixed blade and the rocking body at three points to eliminate the rocking of the pivot of the rocking body and to support the rocking body in the absence of rocking. With the simple adjustment of the rotary operation, the fixed blade and the cutting edge of the rotary blade can be adjusted to the correct cutting point.

(2) An oscillator was oscillated in one direction by using an elastic body in one of the members supporting the oscillator.

Therefore, the cutting body can be interrupted by forcibly rocking the rocking body while the rotation of the cutter drum is continued, and cutting is possible only by returning the rocking body to the position of the base. This is quite good.

(3) Since a general-purpose motor can be used for the drive source of the cutter drum, a conventional sub-motor and a program for controlling the same become unnecessary, and the cost of the rotary cutter device can be reduced.

(4) By combining the fluctuation control means such as adjusting bolts and the elastic body such as springs, the fluctuations of the pivot of the fluctuation body can be completely eliminated and the swing center of the fixed blade can be obtained accurately.

Therefore, when the blade is worn, the wear of the tip of the blade can be replenished by operating the swinging body without changing the blade, so that the durability of the rotary cutter device is significantly improved.

Claims (5)

In a rotary cutter device having a cutter drum which rotates in one direction about a support axis, and has a cutter drum having a rotary blade on its outer circumference and disposed opposite to the cutter drum, A rocking body in which the fixed cutter is oscillated around the support shaft; A fixed blade protruding to one side of the oscillator; Rocking control means for regulating rocking in one direction of the rocking body; An elastic body which gives the oscillating body a normal force in a direction in which the oscillation is regulated; A rocking means for forcibly giving a rocking force to the rocking body; A rotary cutter device configured to support the oscillator by three points of contact between the elastic body and the oscillator, the oscillation restricting means, the contact portion of the oscillator, and the protruding portion of the pivot. The method of claim 1, Rotation cutter device characterized in that the oscillation restricting means is composed of an adjustment bolt screwed to the stop member disposed opposite to the side of the oscillator, and the adjustment bolt is rotated to adjust the installation angle of the oscillator and the fixed blade integrally. ． The method according to claim 1 or 2, Rotary cutter device characterized in that the drive source of the cutter drum is a general-purpose motor. The method according to claim 1, wherein And a rotating cutter device configured to continue rotation of the cutter drum when forcibly rocking the fixed blade and one of the swinging bodies by the swinging means. In using the rotary cutter device according to claim 2, The cutter drum is manually rotated and the fixed blade passes through the rotary blade so that the fixed blade is not joined and the adjustment bolt is rotated to a position where the swinging body does not swing, and the mounting angle of the swinging body is adjusted. The adjustment method of the installation angle of a fixed blade in a cutter apparatus.

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