JPS634636Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cutting device for cutting an original sheet (sheet-like article) such as a magnetic film into a predetermined width dimension.

An example of this type of cutting device is shown in FIG. This cutting device is provided with a lower blade (round blade tool) 3 having a plurality of round blades 2 in a device main body 1 rotatably via a bearing box 4 and a bearing 5, and a lower blade (round blade tool) 3 having a plurality of round blades 2 in the device main body 1. An upper blade (round blade tool) 7 having a diameter of 6 is rotatably provided in the same way as the lower blade 3. In this case, the bearing box 4,
4 is movable in the axial direction with respect to the device main body 1 and is fixed by tightening nuts 8 and 9. By loosening one of the nuts 8, 9 and tightening the other nut 9, 8, the lower blade 3 can be moved in the axial direction together with the bearing boxes 4, 4. Therefore, according to this cutting device, the surface pressure between the side surfaces of the round blades 2 and 6 can be adjusted appropriately, thereby improving the width dimension and sharpness of the cut after cutting the object to be cut. can be kept.

However, the above-mentioned cutting device has a drawback in that it takes a long time to adjust the surface pressure between the side surfaces of the round blades 2 and 6. That is, the appropriate surface pressure between the round blades 2 and 6 changes depending on the material of the object to be cut, the rotational speed of the round blades 2 and 6, the state of wear of the round blades 2 and 6, and the like. To quickly respond to such changes,
It is desirable to adjust the surface pressure while checking the width dimension and degree of sharpness of the cut during cutting. However, in the above cutting device, when adjusting the surface pressure, one of the tightening nuts 8 and 9 must be loosened. When loosening the tightening nuts 8 and 9,
The lower blade 3 can now move freely in the axial direction by the amount of loosening. If cutting is performed in this state, the lower blade 3 will vibrate and there is a risk that the cutting edge portions of the round blades 2 and 6 will be damaged. Therefore, when adjusting the surface pressure, it is necessary to temporarily stop the cutting process, then adjust the position of the lower blade 3 in the axial direction, and then perform the cutting process on a trial basis. Moreover, these steps had to be performed two to several times, which required a long time to adjust the surface pressure.

This invention was made in order to eliminate the above-mentioned drawbacks, and aims to provide a cutting device for sheet-like articles that can adjust the surface pressure of a round blade in a short time.

The feature of this invention is that the screw member is fixed to the main body of the device with its axis aligned with the axis of the round-blade tool that is movable in the axial direction, while The surface pressure of the round blade can be adjusted even during cutting by providing a screw member that is screwed into the screw member fixed to the device main body so that it can rotate freely and cannot move in the axial direction. It is in. In this case, it goes without saying that the screw members that screw together with each other may be provided directly on the device main body or the round-blade tool, or may be provided indirectly through other members.

An embodiment of this invention will be described below with reference to FIGS. 2 to 4. In addition, Fig. 2 is a partially cutaway front view of the cutting device according to this invention, and Fig. 3 is a partially cutaway front view of the cutting device according to this invention.
The figure is a partially cutaway side view of the same device.

In these figures, numeral 11 is the main body of the device. This device main body 11 has a pair of upper and lower round blade tools 12, 13 (hereinafter, the lower round blade tool 12 is the lower blade 3).
The upper round blade tool 13 is called the upper blade. ) are each rotatably provided.

The lower blade 12 has a shaft 14 and this shaft 14.
The shaft 14 is composed of a plurality of round blades 15 that are fitted and fixed on the outer periphery of the shaft 14, and a fitting shaft portion 14a on which the round blades 15 are fitted and fixed, and this fitting shaft portion 14a.
It is composed of a drive shaft portion 14b and a support shaft portion 14c fixed to each end of the shaft. The drive shaft portion 14b is provided in the device main body 11 via a bearing box 16 and bearings 17, 17 so as to be rotatable and immovable in the axial direction. A pulley (not shown) is provided via 18, and this pulley is rotationally driven by a belt (not shown). Further, the support shaft portion 14c is connected to the device main body 11.
It is provided rotatably and immovably in the axial direction via a bearing box 19 and bearings 20, 20, and a pulley 21 is attached to the end protruding from the device body 11.

On the other hand, the upper blade 13 is composed of a shaft 22 and a plurality of round blades 23 that are fitted and fixed to the outer periphery of the shaft 22, and the shaft 22 has a fitting shaft portion 22a on which the round blades 23 are fitted and fixed. and a driven shaft portion 2 fixed to each end of this fitting shaft portion 22a.
2b and a support shaft portion 22c. The driven shaft portion 22b is attached to the bearing box 2 in the device main body 11.
4 and bearings 25, 25 to be rotatable and movable within a predetermined range in the axial direction, and a pulley 26 rotated by the pulley 21 is provided at the end protruding from the device main body 11. installed. Further, the support shaft portion 22c is
A bearing box 27 and bearings 28, 28 are installed in the device main body 11.
It is provided so that it can rotate freely and move within a predetermined range in the axial direction. This support shaft portion 22c can be adjusted in position by a screw mechanism shown in FIG.
23 surface pressure adjustment can be performed.

That is, a female screw member 29 is fixed to the bearing box 27 with its axis aligned with the axis of the upper blade 13. This female threaded member 29 has a slit 29a (see FIG. 3) formed from the outer circumference to the inner circumference. Further, the female thread member 29 has a slit 29.
penetrating a portion having one of the wall surfaces defining a;
A handle 30 is attached which is threaded onto the portion having the other end. By turning this handle 30 to enlarge or reduce the width of the slit 29a,
The female thread diameter of the female thread member 29 can be expanded or reduced.

On the other hand, a male screw member 31 screwed into the female screw member 29 is provided on the end side of the support shaft portion 22c protruding from the device main body 11 so as to be rotatable via bearings 32 and immovable in the axial direction. ing.
Therefore, by turning the handle 30, the female screw member 2
With the female thread diameter of No. 9 expanded, handle 33
By rotating the male threaded member 31, the support shaft portion 22c and eventually the upper blade 13 can be moved in the axial direction. Note that a scale 34 for measuring the amount of rotation relative to the female thread member 29 is formed on the outer periphery of the male thread member 31.

Therefore, when adjusting the surface pressure of the round blades 15 and 23 in the cutting device configured as described above, first, the handle 30 is turned to enlarge the female thread diameter of the female thread member 29. Then, the male screw member 31
is in a state where it can rotate. Therefore, the handle 33
is rotated to move the upper blade 13 in its axial direction to adjust the surface pressure between the round blades 15 and 23.

Here, in this cutting device, since the female thread member 29 is fixed to the bearing box 16 fixed to the main body 11 of the device, even if the male thread member 31 is in a state where it can rotate, it cannot move in the axial direction. Free movement is blocked. Therefore, the upper blade 13 also does not move unnecessarily in its axial direction. Therefore,
Even during cutting, the surface pressure between the round blades 15 and 23 can be adjusted.

In this way, in the cutting device of this invention,
Since the pair of screw members 29 and 31 both adjust the position of the upper blade 13 and prevent it from moving in the axial direction, there must be no looseness between the screw members 29 and 31. In this regard, in the above embodiment, the slit 29a is formed in the female thread member 29 so that the female thread diameter can be adjusted.
By appropriately adjusting the female thread diameter, rattling between both threaded members 29 and 31 can be prevented. In addition, in order to prevent rattling, an elastic member such as a spring may be interposed between both screw members 29 and 31.

Next, another embodiment of this invention shown in FIGS. 5 and 6 will be described. Note that only the characteristic parts thereof will be described here, and the same parts as in the above embodiment are given the same reference numerals and the explanation thereof will be omitted.

In this embodiment, a worm 35 is rotatably provided in the device main body 11, while a male threaded member 3
1 is provided with a worm wheel 36 whose rotation is prevented by a key 37. By rotating the handle 38 attached to the worm 35, the male threaded member 31 is rotated via the worm mechanism, thereby causing the round blades 15, 23 to rotate.
It is designed to adjust the surface pressure between the two. In this case, the shaft 22 of the upper blade 13 and the shaft of the lower blade (not shown) are each formed integrally.

In each of the embodiments described above, the upper blade 13 is movable in its axial direction, but the lower blade 12 may be movable, or both may be movable. In that case, the lower blade 12 or both the lower blade and the upper blade 13 are provided with a screw member.

Further, in each of the above embodiments, the device main body 11
A female thread member 29 is provided on the side (bearing box 27), and a male thread member 31 is provided on the round blade tool (upper blade 13) side, but conversely, a male thread member is provided on the device main body 11 side, and the round blade tool A female thread member may be provided on the side. Further, the installation locations of the double screw members 29 and 31 are not limited to the outer portion of the device main body 11, but may be changed as appropriate, such as the inner portion of the device main body 11.

As explained above, according to the cutting device of this invention, the screw member is fixed to the device main body with its axis aligned with the axis of the round-blade tool that is movable in the axial direction, and The movable round-blade tool is provided with a screw member that is screwed into the screw member fixed to the main body of the device so as to be relatively rotatable and immovable in the axial direction. , since a first handle is provided for enlarging or reducing the thread diameter of this female threaded member, and a second handle for rotating this threaded member is provided for the threaded member provided on the round blade tool side; By operating the first handle,
The thread diameter of the female threaded member is enlarged, the threaded state of the female threaded member and the male threaded member is loosened, and the threaded member is made rotatable between the two threaded members, and by operating the second handle, the screw thread provided on the round blade tool side is adjusting the movement of the round-blade tool in its axial direction by rotating the screw member, and operating the first handle in the opposite direction;
The surface pressure between the round blades is reduced during cutting by reducing the thread diameter of the female threaded member, fixing the space between both threaded members, and placing the round blade tool in a non-rotatable state to prevent the round blade tool from moving in the axial direction. Adjustment can be made, and since movement of the round-blade tool in the axial direction is prevented by a force in a direction perpendicular to the axial direction by changing the thread diameter of the female threaded member, when tightening the female threaded member. Even when loosening, the round-blade tool does not move in the axial direction, and there is no deviation in surface pressure adjustment. This provides the effect that the surface pressure adjustment work can be performed in a short time and with high precision.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view showing an example of a conventional cutting device with some parts omitted; FIGS. 2 to 4 show an embodiment of the invention; FIG. 2 is a partially cutaway front view; FIG. 3 is a partially cutaway side view, FIG. 4 is a partially cutaway front view showing an enlarged view of the main part, FIGS. 5 and 6 show other embodiments of this invention, and FIG. is a view similar to FIG. 4, and FIG. 6 is a view taken in the direction of the arrow in FIG. 11...Device body, 12...Round blade tool (lower blade),
13...Round blade tool (upper blade), 15...Round blade, 23
... Round blade, 29 ... Female thread member, 29a ... Slit, 30 ... First handle, 31 ... Male thread member, 33 ... Second handle.

Claims (1)

[Scope of utility model registration request] A sheet-shaped article cutting device in which a pair of round blade tools each having a plurality of round blades is rotatably provided in the device main body, and at least one of the pair of round blade tools is movable in the axial direction thereof,
A screw member is fixed to the device main body with its axis aligned with the axis of a round blade tool that is movable in the axial direction, and the screw member is fixed to the round blade tool that is movable in the axial direction. A screw member that is screwed into the screw member is provided to be relatively rotatable and immovable in the axial direction, and a first handle is provided on the female thread member of the two screw members for enlarging or reducing the thread diameter of the female thread member. A cutting device for sheet-like articles, characterized in that a screw member provided on the round blade tool movable in the axial direction is provided with a second handle for rotating the screw member.