JPH0411037Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutting device for cutting a sheet material (sheet-like article) such as a magnetic film into a predetermined width dimension.

[Prior Art] As a cutting device for this type of sheet-like article, the applicant has already proposed a technique described in Utility Model Application No. 177914/1983.

The above technique mainly consists of a lower blade 12 and an upper blade 13 provided on a cutting device main body 11, as shown in FIGS. 3 to 5.

The lower blade 12 is composed of a shaft 14 and a plurality of round blades 15 that are fitted and fixed to the outer periphery of the shaft 14. The shaft 14 has a round blade 1
The drive shaft 14b and the support shaft 14c are respectively fixed to each end of the fitting shaft 14a by bolts 14d. The drive shaft portion 14b is rotatable via the bearing box 16 and the bearings 17, 17.
and is provided so as to be immovable in the axial direction. A pulley (not shown) is provided at the end of one side (left side in FIG. 3) protruding from the cutting device main body 11 via a key 18, and this pulley is rotated by a belt (not shown). It is becoming driven.
Further, the support shaft portion 14c is provided rotatably via the bearing box 19 and bearings 20, 20, but not movable in the axial direction. A pulley 21 is attached to the other end protruding from the cutting device main 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. The shaft 22 includes a fitting shaft portion 22a into which a round blade 23 is fitted and fixed, and a driven shaft portion 22b and a support shaft portion 22 which are respectively fixed to each end of the fitting shaft portion 22a with bolts 22d.
It is composed of c. The driven shaft portion 22b is rotatably provided via the bearing box 24 and bearings 25, 25, and is movable within a predetermined range in the axial direction. Further, the support shaft portion 22c is provided so as to be rotatable via the bearing box 27 and the bearings 28, and to be movable within a predetermined range in the axial direction. In addition,
Reference numeral 26 indicates a pulley rotated by the pulley 21.

A female screw member 29 having a female screw formed on its inner peripheral surface is fixed to the bearing box 27 with its axis aligned with the axis of the upper blade 13. This female thread member 2
As shown in FIG. 4, a slit 29a extending from the front surface to the back surface is formed in the upper end portion of 9. As shown in FIG. Further, a handle 30 is attached to the female threaded member 29, passing through the right side of the wall defining the slit 29a and screwed into the left side. Based on this configuration, by rotating the handle 30 and moving it to the left in the figure, the right part of the slit 29a is moved to the left,
The female screw member 29 is elastically deformed and its female screw diameter is reduced. On the other hand, by rotating the handle 30 in the opposite direction, the right side portion of the slit 29a returns to the right side due to the elasticity of the female screw member 29, thereby increasing the female screw diameter.

On the other hand, a male threaded member 31 that is screwed into the female threaded member 29 is rotatably supported by the support shaft portion 22c via bearings 32, 32. Male thread member 31
is tightened or released by reducing or expanding the female thread diameter of the female thread member 29, and becomes either non-rotatable or rotatable with respect to the female thread member 29. This female screw member 29 is attached to the bearing box 27 so that it cannot move relative to the support shaft portion 22c in the axial direction. Further, a handle 33 is attached to the end of the male threaded member 31. With this configuration, by rotating the handle 33 with the female thread diameter of the female thread member 29 expanded, the support shaft portion 22c, that is, the shaft 22 moves in the axial direction together with the female thread member 29, and the upper blade 13 is moved in the axial direction. It can be moved in the axial direction. Note that the male threaded member 31 is connected to the support shaft portion 2 by bearings 32, 32.
2a, the shaft 22 can freely rotate.

In the cutting device, the round blades 15, 2
When adjusting the surface pressure in step 3, first, the handle 30 is turned to enlarge the female thread diameter of the female thread member 29. Then, the male threaded member 31 becomes rotatable. Then, turn the handle 33 to remove the upper blade 13.
Move (offset) the round blade 1 in its axial direction.
Adjust the surface pressure between 5 and 23.

By the way, when the cutting device is configured as described above, the surface pressure of the round blades 15, 23 can be adjusted even during the cutting process, and the surface pressure can be adjusted in a short time, which is an advantage.

[Problems to be Solved by the Invention] However, in the cutting device having the above configuration, the threaded engagement of the female threaded member 29 and the male threaded member 31 offsets (moves) the support shaft portion 22c, that is, the upper blade 13 in its thrust direction. ) and fixed. Therefore, as the handle 30 is rotated, the diameter of the female thread of the female thread member 29 is expanded or reduced, but this changes the pitch of the thread, making it easier for dirt to enter the threaded portion and damage the threaded portion. When rotating the handle 33 to rotate the male threaded member 31,
There has been a problem in that the thread crests and troughs of the female thread member 29 and the male thread member 31 interfere with each other, thereby gradually deteriorating the meshing state. In particular, since the male threaded member 31 is made with fine thread pitch and high precision in order to determine its offset amount (axial movement amount), the above problem is caused by the upper blade 13.
This means that it has the important drawback of gradually becoming unable to make delicate surface pressure adjustments.

Further, in order to rotate the male threaded member 31 while meshing with the female threaded member 29, the male threaded member 31 is inserted at the lower end corner of the slit 29a of the female threaded member 29.
damage the threaded part of the machine (this is what happens when you just cut the thread with a die). To avoid this,
It is necessary to round the edge (inner diameter) of the lower end corner of the slit 29a. However, since the edge of the lower end corner of the slit 29a is the inner diameter of the screw and is also the lower end of the slit 29a, this work is difficult.

In the present invention, when the sheet-like article cutting device has the above configuration, the screw engagement condition deteriorates due to interference between the thread peaks and valleys, and due to this, delicate surface pressure adjustment of the round blade becomes impossible. , and the difficulty of rounding the edges of the lower corners of the slits.

[Means for Solving the Problems] The present invention solves the above problems by providing a cylindrical sleeve at one end of the shaft so as to be rotatable relative to the shaft via a bearing. The sleeve is installed in a state where relative movement in the axial direction is prevented, and the sleeve is installed in the cutting device main body through a rolling bearing so that it can rotate freely relative to the cutting device, and the male threaded part provided on the sleeve is screwed into the female threaded part provided in the cutting device main body. The sleeve is provided on the cutting device main body so that it can be moved in the axial direction of the shaft, the ring portion of the tightening member is provided on the cutting device main body so that its inner diameter can be expanded or contracted, and the sleeve is provided on the ring portion of the tightening member. The sleeve can be fixed to the cutting device main body by fitting the sleeve into the cutting device and tightening the ring portion of the tightening member.

[Function] In the cutting device having the above configuration, the shaft (sleeve) is moved in the axial direction by the screwing of the female threaded part and the male threaded part, and the shaft (sleeve)
Since the prevention and fixation of the axial movement of the shaft are done by tightening the tightening members,
This avoids the conventional problem of interference between the peaks and valleys of the female and male thread parts caused by tightening the split nut-shaped female thread member, and adjusts the surface pressure of the round blade by constantly moving the shaft smoothly even during cutting. can be done subtly.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2. The cutting device of the present invention has a surface pressure adjustment mechanism in the upper blade that is left and right opposite to that of the prior art shown in FIG. 12), the same or substantially the same configurations that provide the same functions and effects will be given the same reference numerals as those in the prior art, and the explanation will be omitted.

That is, the cutting device of the present invention mainly includes a lower blade 12 and an upper blade 53, which are respectively provided on a cutting device main body 51.

The upper blade 53 is composed of a shaft 62 and a plurality of round blades 63 that are fitted and fixed to the outer periphery of the shaft 62. The shaft 62 includes a fitting shaft portion 62a into which a round blade 63 is fitted and fixed, and a fitting shaft portion 62a.
It consists of a support shaft portion 62c fixed to one end (on the left side in FIG. 1) of a, and a driven shaft portion 62b fixed to the other end of the fitting shaft portion 62a.

A cylindrical sleeve 8 is provided on the driven shaft portion 62b.
0 is supported through a bearing 65 and a spacer 65b to be rotatable relative to the driven shaft portion 62b (a part of the shaft 62). A female threaded portion is formed on the inner peripheral side of the left end of this sleeve 80 in FIG.
A ring-shaped male threaded member 81 having a male thread formed on the outer periphery is screwed into this female threaded portion. The center portion of the male threaded member 81 is passed through the driven shaft portion 62b with a gap, and the male threaded member 81 and the driven shaft portion 62b are connected to each other.
and can be rotated relative to each other. Further, a receiving portion 80 having a smaller diameter than the left end portion is provided at the right end portion of the sleeve 80.
a is formed, and the bearing 65 and the spacer 65b are formed by the receiving portion 80a and the male threaded member 81.
is sandwiched between. On the other hand, a tightening nut 85 is screwed onto the right end side of the driven shaft portion 62b with its outer peripheral surface spaced apart from the inner peripheral surface of the sleeve 80, and the tightening nut 85 and the left end of the driven shaft portion 62b The bearing 65 and spacer 65b are sandwiched between them. With such a configuration, the driven shaft portion 62b and the spacer 65b can rotate relative to each other, but are prevented from relative movement in the axial direction.

Furthermore, an offset male screw portion 80b for moving the shaft 62 in the axial direction is formed on the outer peripheral surface of the left end of the sleeve 80. On the other hand, an offset nut (female threaded portion) 82 is fixed to the left end of the bearing box 64, and the offset male threaded portion 80b is screwed into this offset nut 82. Furthermore, a needle-shaped roller bearing (rolling bearing) 83a and a spacer 83b are interposed between the outer circumference of the sleeve 80 and the inner circumference of the bearing box 64. It is also said that relative rotation is possible.

Further, the sleeve 80 is attached to the other end of the sleeve 80.
A rotating member 88 for rotating the driven shaft 62b is inserted through a through hole formed in the center of the rotating member 88, and is attached with a bolt 90 so that the rotating member 88 and the driven shaft 62b can rotate freely. There is. A hole 92 is provided on the outer periphery of the other end of the rotating member 88 . This hole 92 has an offset handle 9
3 is removably fitted by a spring pin 91. Further, a tightening member 95 and a scale plate 96 are provided on the outer peripheral side of the rotating member 88.

The tightening member 95 has a tightening member main body 95b.
is fixed to the side surface of the bearing box 64 attached to the cutting device main body 51 with bolts 97.
At the center of this tightening member 95, the sleeve 80
A fitting hole 95a for fitting is formed. A ring portion 99 is formed at the peripheral edge of this insertion hole 95a, and the upper half of this ring portion 99 has a notch 98.
It is separated from the tightening member main body 95b by. At the upper end of this ring portion 99, two upright pieces 99a, 99a are provided. There is a slit 100 between these two upright pieces 99a, 99a.
is formed to communicate with the insertion hole 95a from the outer periphery. A screw hole and a through hole 99b are formed in the opposing direction of the upright pieces 99a, 99a.
A tightening lever 101 for tightening or loosening the ring portion 99 is provided in the through hole 99b.
The tightening lever 101 is attached by threading a male threaded portion formed at the tip of the tightening lever 101 into the threaded hole.

The scale plate 96 is connected to the offset handle 93.
The amount of rotation of the rotating member 88 and the sleeve 80 due to the rotation of (not shown) is rotatably attached to the rotating member 88.

Next, the support shaft portion 62c located on the left side in FIG.
The bearing box 67 and the bearing 6 are attached to the cutting device main body 51.
8, and is provided so as to be rotatable and movable within a predetermined range in the axial direction. Further, the support shaft portion 6
A tightening nut 69 that prevents the bearing 68 from moving in the axial direction is screwed onto one end of the bearing 2c. In addition, male thread members 70a and 70 are provided in the female thread portions formed on the inner periphery of one end and the other end of the bearing box 67, respectively.
b passes through the support shaft portion 62c and is threadedly engaged with the outer circumferential surface of the support shaft portion 62c in a spaced state. Gaps S1 and S2 are provided between the inner end surfaces of the male threaded members 70a and 70b and the bearings 68 located at both ends. Therefore, the support shaft portion 62c, as well as the fitting shaft portion 62a and the driven shaft portion 62b,
By rotating the offset handle 93, it can be moved in the axial direction within the range of the gap (S1+S2).

Next, the operation of this cutting device, particularly the axial movement of the shaft 62, that is, the surface pressure adjustment mechanism of the upper blade 53 will be explained.

First, the tightening lever 101 is rotated to widen the interval between the slits 100 and the ring portion 99 is loosened. When the ring portion 99 loosens, the inner diameter of the ring portion 99 expands, and in this state, the sleeve 80 becomes rotatable and movable in the axial direction with respect to the cutting device main body 51. Then, the offset handle 93 is rotated. Then, the sleeve 80 integrated with the rotating member 88 rotates within the offset nut 82 screwed thereto and moves in the axial direction (offsets). The sleeve 80 is connected to the driven shaft portion 6
2b, that is, relative movement in the axial direction with the shaft 62 is prevented, so as the sleeve 80 moves, the shaft 62 also moves in the axial direction, and the round blades 15,
The surface pressure is adjusted between 63 and 63.

After adjusting the surface pressure, rotate the tightening lever 101 of the tightening member 95 to remove the upright pieces 99a, 99.
a, that is, tighten the ring part 99 and insert into the insertion hole 95.
The sleeve 80, which is loosely fitted to the sleeve 80, is fixed, and movement of the sleeve 80 in the axial direction is prevented. By the way, since the sleeve 80 and the driven shaft portion 62b are provided so as to be relatively rotatable, the tightening member 95
The tightening or loosening operation of the driven shaft portion 62b
The surface pressure between the round blades 15 and 63 can be adjusted even during the rotation of the blade, that is, during cutting of a sheet-like article. In addition, since the tightening member 95 tightens and loosens the sleeve 80 with its ring portion 99, a threaded portion is not provided as a tightening mechanism, and unlike the conventional method, there is no surface pressure due to damage to the threaded portion. This solves the problem of inability to adjust. Of course, in this surface pressure adjustment mechanism, since the tightening lever 101 and the offset handle 93 are only operated, the surface pressure can be adjusted quickly and in a short time. Of course, since this tightening mechanism does not have a threaded portion, there is no need for the difficult work of rounding the edge of the lower end of the slit, which was conventionally required.

Further, the cutting device described above has the advantage that the shaft bearing can be made larger than that shown in FIG.

That is, in the cutting device shown in FIG. 3, the bearing 32 that receives the thrust load is smaller than the bearing 28 that receives the radial load. This is because the center lines of the female threaded member 29 and the male threaded member 31 do not match, so when the male threaded member 31 is tightened, a radial load acts on the support shaft portion 22c, but at this time the bearing 32 is shape, the load acting on the support shaft portion 22c becomes large, and the bearing 2
This is because a large load will be placed on 8. For this reason, the bearing 32 has to be made smaller,
Since the life of the bearing 32 is shorter than the life of the bearing 28, maintenance and inspection must be performed frequently.

However, in the above-described cutting device, the bearings 65 between the sleeve 80 and the driven shaft portion 62b can be radial thrust bearings of the same type and size, so that the above-mentioned problems do not occur at all. Further, since the bearings 65 of the driven shaft portion 62b and the support shaft portion 62c can be arranged in symmetrical positions, stability during cutting can be improved.

Furthermore, in the above-mentioned cutting device, up to 170 round blades 63 are installed, and each round blade 6
In order to apply a predetermined surface pressure to the sleeve 80,
A force of 100Kg or more may be applied in the axial direction,
Moreover, a load in the radial direction due to the weight of the upper blade 53 and the like also acts. For this reason, not only is play likely to occur between the sleeve 80 and the cutting device main body 51, but also a large force is required to move the sleeve 80 manually. In this regard, in the above-mentioned cutting device, the sleeve 80 is provided in the cutting device main body 51 via the roller bearing 83a so as to be relatively rotatable, and the offset male threaded portion 80b of the sleeve 80 is screwed into the offset nut 82, so that Since the sleeve 80 is configured as a mechanism, the frictional resistance and wear of the sleeve 80 are small, the sleeve 80 can be rotated smoothly, and the sleeve 80 can be moved without any resistance. Therefore, the sleeve 80 can be moved with a small force, and the occurrence of play between the sleeve 80 and the cutting device main body 51 can be prevented, making it possible to perform delicate position adjustments of the upper blade 53. This allows the desired surface pressure to be applied to the round blades 15, 63 with high precision.

By the way, depending on the cutting device, separate drive sources may be connected to the upper blade and the lower blade, and in this case,
Normally, the rotational speed of the upper and lower blades is measured at the end of the shaft while setting the surface pressure to the optimum condition. In this regard, in the present invention, the cylindrical sleeve 8
Since the surface pressure adjustment mechanism is provided in the second embodiment, the driven shaft portion 62b can be made to protrude outward from the sleeve 80, and the pulley 26 can be attached to the driven shaft portion 62b and connected to the drive source, as in the above embodiment. Therefore, it is very convenient to be able to measure the rotational speed and set the surface pressure at the same place. Further, contrary to the above embodiment, the support shaft portion 62 on the opposite side of the sleeve 80
Since the pulley 26 and the drive source can be connected to c, it is possible to flexibly correspond to the layout of factory space and equipment.

In the above embodiment, the upper blade 53 is movable in its axial direction, but the sleeve 80 is mainly movable.
A surface pressure adjusting mechanism consisting of a and a tightening member 95 may be provided on the lower blade 12 or both the lower blade 12 and the upper blade 53 so that these can be moved.

[Effect of the invention] In the cutting device having the above structure, a cylindrical sleeve is attached to one end of the shaft through a bearing so that it can freely rotate relative to the shaft and prevent relative movement in the axial direction. The shaft is attached to the cutting device main body by attaching the sleeve to the cutting device main body so that it can rotate freely relative to the cutting device main body via a rolling bearing, and by screwing the male threaded portion provided on the sleeve into the female threaded portion provided on the cutting device main body. A ring part of the clamping member is provided on the cutting device main body so that its inner diameter can be expanded or contracted, a sleeve is fitted into the ring part of the clamping member, and the ring part of the clamping member is tightened. Therefore, since the sleeve is provided so that it can be fixed to the main body of the cutting device, problems such as interference between the peaks and troughs of the female and male threaded parts, which are caused by tightening the split nut-shaped female threaded member, can be avoided as in the past. Even during cutting, the shaft can be moved smoothly and the surface pressure of the round blade can be finely adjusted. Furthermore, the sleeve can be rotated smoothly, and accordingly, the sleeve can be moved without any resistance. Therefore, the sleeve can be moved with a small force, and play between the sleeve and the main body of the cutting device can be prevented, allowing delicate positional adjustments of the round blade tool. Excellent effects such as being able to obtain a desired surface pressure with high precision can be obtained.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of this invention, with Figure 1 being a longitudinal sectional front view with a part of the cutting device omitted, and Figure 2 being viewed from the - line arrow in Figure 1. Figures 3 to 5 show an example of a conventional cutting device, and FIG. 3 is a longitudinal sectional front view similar to FIG. 1 with some parts of the cutting device omitted, and FIG. A partially cutaway side view, and FIG. 5 is a partially cutaway front view showing an enlarged view of the main part. 12... Lower blade (round blade tool), 14... Shaft,
15... Round blade, 51... Cutting device main body, 53...
Upper blade (round blade tool), 62...shaft, 63...
Round blade, 65...Rolling bearing (bearing), 80...Sleeve, 80b...Male thread for offset, 82
...Offset nut (female thread), 83a...
...Bearing, 95...Tightening member, 99...Ring part.

Claims (1)

[Scope of utility model registration request] A seat in which a pair of round blade tools, each having a plurality of round blades, are rotatably provided in the cutting device body at the axially intermediate portion of the shaft, and at least one of the pair of round blade tools is movable in the axial direction. In the cutting device for a shaped article, a cylindrical sleeve is provided at one end of the shaft so as to be rotatable relative to the shaft through a bearing and prevented from moving relative to the shaft, and the sleeve is The sleeve is provided in the cutting device main body so as to be relatively rotatable via a rolling bearing, and the male threaded portion provided in the sleeve is screwed into the female threaded portion provided in the cutting device main body, so that the sleeve is connected to the cutting device A ring portion of a tightening member is provided on the main body so as to be movable and adjustable in an axial direction of the shaft, a ring portion of a tightening member is provided on the cutting device main body so that its inner diameter can be expanded or contracted, and the sleeve is fitted into the ring portion of the tightening member. A cutting device for sheet-like articles, wherein the sleeve is fixed to the cutting device main body by tightening a ring portion of the tightening member.