JP2000176878A - Cutter positioning jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig capable of easily, quickly and highly precisely operating slit width changing without requiring skill by eliminating inferiority of precision and workability in conventional technology. SOLUTION: A jig to position a plural number of knife holders 4 provided on a holder shaft 5 with specified intervals and to slit a web 1 in specified slit width by a leather blade 3 on each of the knife holders 4 is furnished with a fixed shaft 9 provided in parallel with the holder shaft 5, an interval setting bar 11 provided on the fixed shaft 9 free to displace in the axial direction and free to longitudinally oscillate around its shaft center as a center and a pair of contact arms 14, 15 provided on the interval setting bar 11, and it is devised possible to read a pitch between the leather blades 3, 3 of the both knife holders 4, 4 as slit width from a setting position on the interval setting bar 11 of the other contact arm 15 at the time when the one contact arm 14 is clamped by the two knife holders 4, 4 in a state of fixing it at a standard position of the interval setting bar 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter in which a long web is simultaneously slit in a longitudinal direction by a plurality of blades and wound up as required. The present invention relates to a jig for simplifying a positioning operation.

[0002]

2. Description of the Related Art As a method of slitting a web in a slitter, a straight leather cutting method in which a razor blade is inserted into a running path of the web and the web is slit, or a rotary circle is used in accordance with the material of the web to be processed and required accuracy. There is known a straight-line shear cutting method and the like in which a blade is meshed from above and below, and a web is shear-cut in the traveling path in the same manner as described above.

In these conventional systems, in most cases, a large number of blades or blade holders are fitted on a shaft, and the slit width can be changed simply by moving them on the shaft and fixing them at required positions. On the other hand, although it has a high degree of accuracy, it generally has only a low accuracy, and a high degree of skill is required to obtain a high accuracy.

As a countermeasure for solving the above-mentioned difficulty, a method of attaching a scale on the shaft has been adopted in part. In this case, when sequentially changing the slit width, the operator performs the work of visually moving the blade holder or the like to the required scale value on the scale while performing calculations to add the slit width one after another by mental arithmetic or the like. is there.
In this method, the calculation error is likely to occur, and it is difficult to avoid the troublesome operation of visually adjusting the blade holder and the like to the scale value on the scale and a decrease in accuracy due to the operation.
In the end, it is necessary to measure the distance between each blade or each blade holder one by one with a scale on hand to confirm whether there is a large error or error, and to correct it as necessary .

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art in which the accuracy and operability are poor, and to perform the operation of changing the slit width simply, quickly, and accurately without any skill. It is to provide a jig that can be used.

[0006]

A blade positioning jig according to the present invention positions a plurality of blade holders provided on a holder shaft so as to be displaceable in the axial direction thereof at predetermined intervals, and holds the plurality of blade holders on each blade holder. In a jig in which a long web is slit to a predetermined slit width by a set blade, a fixed shaft provided in parallel with the holder shaft, and the fixed shaft is displaceable in the axial direction thereof. An interval setting bar provided in parallel with the fixed axis so as to be able to swing back and forth around the center and detachable from the fixed axis;
The distance setting bar includes at least a pair of contact arms provided so as to be displaceable in the axial direction thereof, and the two blades are fixed with one contact arm fixed to a reference position on the distance setting bar. When sandwiched closely by the holders, the pitch between the blades of the two blade holders can be read as a slit width from a set position on the interval setting bar of the other contact arm.

In the above configuration, when the slit width is changed, each contact arm is fixed to a reference position on the interval setting bar and a set position corresponding to the required slit width, respectively.
The distance setting bar is swung forward about the axis of the fixed shaft integrally with the two contact arms, whereby the two contact arms are inserted between the two blade holders. continue,
Both contact arms are sandwiched between two blade holders,
In this state, the double blade holder is fixed at each position on the holder shaft. At this time, the pitch between the blades of the two blade holders has a required slit width according to the reference position and the set position of the two contact arms. The variable range of the slit width can be changed by appropriately changing the reference position on the interval setting bar to which one contact arm is fixed.

It is preferable that a scale is provided along the interval setting bar so that the set position or the reference position and the set position of the contact arm can be easily measured on the interval setting bar.

Further, the two contact arms sandwiched between the two blade holders as described above can be easily pulled out from between the two blade holders in order to change the width of the next adjacent slit or the like. It is preferable that a roller capable of rolling by contact with each of the blade holders is pivotally supported on each of the contact arms when they swing back and forth in a state where they are closely sandwiched between two blade holders.

[0010] Furthermore, the reference position on the interval setting bar to which one of the contact arms is fixed is set to the movable range of the contact arm on the interval setting bar so that the variable range of the slit width can be easily changed. May preferably be provided at both ends so that the variable range of the slit width when each reference position is selected preferably partially overlaps.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. FIG. 1 is a side view of a blade positioning jig according to an embodiment of the present invention applied to a slitter of a straight leather cut type when not slitting, FIG. 2 is a front view showing the entire blade positioning jig shown in FIG. FIG. 3 is a front view including a partial cross section showing a main part of the tool positioning jig shown in FIG. 1 in an enlarged manner, and FIG. 4 is a side view of a knife holder portion in a slit in a conventional straight leather cut type slitter. .

[Conventional Example] First, a description will be given of a conventional linear laser-cut type slitter which does not use the blade positioning jig according to the present invention. In FIG. And run in the direction of the arrow. A plurality of razor blades 3 as cutting blades are inserted into a straight path between the rollers 2 and 2 ', and the web 1 is slit into multiple strips. Each razor blade 3 is attached to a knife holder 4 as a knife holder provided with a suitable mechanism.
Are displaceably fitted on the holder shaft 5 and are juxtaposed at predetermined positions at predetermined intervals, and are fixed by knob screws 6, respectively.

When the slit width is changed, the operation of the slitter is temporarily stopped, the holder shaft 5 is slightly rotated clockwise from the outside, and thereby each razor blade 3 biting into the web 1 does not come into contact with the web 1. The knife holders 4 are raised to the height, and in this state, the knife holders 4 are rearranged on the holder shaft 5 so as to obtain a required slit width. In this case, a key is attached to the holder shaft 5 so that even if the knob screw 6 is loosened during the movement of each knife holder 4 on the holder shaft 5, each razor blade 3 is not lowered and the height of each razor blade 3 is aligned. A groove 8 is formed, and a key 8 fitted to the key groove 7 is attached to each knife holder 4. If the number of knife holders 4 is too large than the number of slits, the surplus is moved to a position outside the width of the web 1 and fixed so as not to be involved in the slits of the web 1.

After the operation of changing the slit width by changing, adjusting and fixing the positions of the knife holders 4 is completed as described above, the holder shaft 5 is rotated counterclockwise, whereby each razor blade 3 is rotated. As shown in FIG. 4, the web is cut into the web 1 to an appropriate depth, and the operation of the slitter is resumed in this state.

[Embodiment] The blade positioning jig according to the embodiment of the present invention shown in FIGS. 1 to 3 is attached to the conventional straight leather cut type slitter shown in FIG. The description of those in the range shown in FIG. 4 is omitted.

FIG. 1 shows a state in which the razor blade 3 is pulled up from the web 1 as described above when changing the slit width. 1 to 3, a fixed shaft 9 is fixedly mounted between the left and right frames 10, 10 'in parallel with the holder shaft 5. A distance setting bar 11 is arranged in parallel with the fixed shaft 9, and hangers 12, 12 ′ are fixed at the both ends of the distance setting bar 11 in the same phase and are hung on the fixed shaft 9, whereby the distance setting bar 11 is provided. Is
While maintaining the parallel relationship with the fixed shaft 9, the hanger 12, 1
Along with 2 ′, the fixed shaft 9 can be displaced in the axial direction, can swing back and forth around its axis, and can be detached from the fixed shaft 9. The front surface of the interval setting bar 11 is flattened and the scale 13 is fixed on the flat surface.

A pair of contact arms 14 and 15 are fitted on the interval setting bar 11 so as to be displaceable in the axial direction thereof.
The key grooves 16, 17 are fitted in the keys 18, 19, respectively, so that they are restricted in the rotation direction, and can be fixed at arbitrary positions in the axial direction by screws 20, 21 '.

The width of the slit is the width of the adjacent leather blade 3,
The distance between the knife holders 4 and 4 corresponds to the distance (pitch) between the same side surfaces of the knife holders 4 and 4 as can be seen from FIGS. In this embodiment, the minimum possible slit width is 60 mm. 2 and 3, the left key groove 16 on the interval setting bar 11 is provided from the left end of the interval setting bar 11 rightward over a predetermined length. In this embodiment, the key groove 16 disappears when the left contact arm 14 is moved rightward from the left end by exactly 100 mm, and the key 18 contacts the entire right end of the key groove 16 and the left contact arm 14 Is fixed at that position as a reference position.

Next, when the right contact arm 15 is brought close to the left contact arm 14 and the tip protruding downward from the both contact arms 14, 15 is sandwiched between the two knife holders 4, the leather blade is used. The value of the interval between the three and the three, that is, the value of the slit width, can be read from the scale value on the scale 13 below the right end face of the right contact arm 15. Right keyway 17
Indicates that the right contact arm 15 is moved from the slightly left position of the scale value 60 mm corresponding to the minimum possible slit width in the interval setting bar 11 to the right end (in this embodiment, the scale value 210 m
m).

Next, an operation method for positioning each knife holder 4 in order to change the slit width and set a new value using the blade positioning jig having the above-described configuration will be described.

First, the fixed shaft 9 in the blade positioning jig
Other parts (hereinafter simply referred to as a movable jig part) are integrally removed outside the machine, or in advance while the movable jig part is integrally hung on the fixed shaft 9 on the machine. The right contact arm 15 is moved on the interval setting bar 11 to a position at which the scale value on the scale 13 at the right end surface has a required slit width, and is fixed to the position by tightening the screw 20 ′ as a setting position. You. Next, between the first knife holder 4 fixed to the left end on the holder shaft 5 and the second knife holder 4 adjacent to the right side thereof, both ends of the pair of contact arms 14 and 15 form the movable jig portion. The movable jig part is slid on the fixed shaft 9 in this state, and first, the tip of the left arm 14 is pressed leftward against the right end face of the first knife holder 4. . Further, the second knife holder 4 is moved to the left by loosening the knob screw 6, and is fixed by tightening the knob screw 6 when its left end face is in close contact with the tip of the right contact arm 15. In this case, the two contact arms 14, 1
The tip of 5 is sandwiched between the first and second knife holders 4 and 4 closely below. If the slit width before the change is narrow and is set to be wider than that, the leading ends of the contact arms 14 and 15 cannot be inserted between the first and second knife holders 4 during the above operation. Then, the second knife holder 4 is temporarily moved rightward, and the above operation is performed with the tips of the contact arms 14, 15 inserted between the expanded first and second knife holders 4, 4. Just do it.

In the present embodiment, when the slit width is changed, as described above, the left contact arm 14 causes the key 18 to move the key 18 on the distance setting bar 11 to the left keyway 1.
6 is fixed to a reference position on the interval setting bar 11 so as to be in close contact with the right end of the scale 6, in this case, the scale of the scale 13 is set according to the setting position of the right contact arm 15 on the interval setting bar 11. According to the value, it is possible to set the slit width from 60 mm to a maximum of 210 mm. Here, when setting of the slit width of 210 mm or more is required, the reference position on the interval setting bar 11 of the left contact arm 14 can be appropriately changed from the above position to an arbitrary position in the left direction. Reliance arm 1
When 4 is fixed to the left end of the key groove 16 on the interval setting bar 11, a value obtained by adding 100 mm to the scale value of the scale 13, that is, a slit width from 160 mm to a maximum of 310 mm can be set.

As described above, after the slit width is set by positioning the second knife holder 4 with respect to the first knife holder 4, the movable jig portion is subsequently swung manually or the like, and The tips of the arms 14 and 15 are pulled out from between the first knife holder 4 and the second knife holder 4. The extracted movable jig portion is slid rightward on the fixed shaft 9 and the second knife holder 4 having the front ends of the abutment arms 14 and 15 fixed forward and the second knife holder 4 adjacent to the right side thereof. The next slit width is set by positioning the third knife holder 4 with respect to the second knife holder 4 in the same procedure as described above. The operation is completed by repeating the above operation and sequentially setting the required number of slit widths. After the operation is completed, the slitter can be operated while the movable jig portion is suspended on the fixed shaft 9, but when the movable jig portion becomes an obstacle such as paper feeding or monitoring of the web. May be removed.

As described above, after the positioning of the second knife holder 4 with respect to the first knife holder 4 or the positioning of the third knife holder 4 with respect to the second knife holder 4, etc. When the knife holders 4 are fixed with a slight pressure applied to them, the tips of the contact arms 14, 15 are pulled out from between the knife holders 4, 4 due to the frictional force between the contact surfaces. In some cases. In order to solve this problem, as shown in an enlarged view in FIG.
The rollers 2 and 15 are rolled so that when they swing back and forth, they can roll by contact with the side surfaces of the knife holders 4 facing each other.
1 is pivotally connected via a pin 22. In this embodiment,
A miniature bearing is used as the roller 21. The pin 22 supports the roller 21 and is embedded and fixed to the tip of each of the arms 14 and 15 toward the axis of the fixed shaft 9.

In the above embodiment, the blade positioning jig according to the present invention is applied to a slitter of a linear laser cut system. It is needless to say that the present invention is also useful for positioning each rotary round blade holder, a single individual upper blade holder, a respective individual leather holder, and the like, and is also applicable to positioning other than a blade.

[0026]

Since the tool positioning jig according to the present invention is constructed as described above, the structure is simple and the manufacturing cost is low, and after the positioning operation is completed, the operation is not obstructed by other operations or monitoring. The slit width can be removed as needed, eliminating the inconvenience of precision and operability in the prior art, and the operation of changing the slit width can be performed easily and quickly with high precision without requiring skill.

In the case where the scale is provided along the interval setting bar, the set position or the reference position and the set position of the contact arm can be easily measured from the scale value of the scale on the interval setting bar. In the case where a roller that can roll by contact with each blade holder when they swing back and forth in a state where they are sandwiched closely by two blade holders is provided on each contact arm, two The two contact arms sandwiched closely below by the blade holder can be easily extracted from between the blade holders for changing the next slit width or the like. Furthermore, when the reference position on the interval setting bar to which one of the contact arms is fixed is provided at each end of the movable range of the contact arm on the interval setting bar, the variable range of the slit width can be easily changed. be able to.

[Brief description of the drawings]

FIG. 1 is a side view of a blade positioning jig according to an embodiment of the present invention applied to a slitter of a straight leather cut type when a slit is not slit.

FIG. 2 is a front view showing the entire blade positioning jig shown in FIG. 1;

FIG. 3 is an enlarged front view showing a main part of the blade positioning jig shown in FIG. 1 and including a partial cross section.

FIG. 4 is a side view of a slitter of a knife holder portion in a conventional straight leather cut type slitter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Web 3 Leather blade 4 Knife holder 5 Holder shaft 9 Fixed shaft 11 Distance setting bar 14 Contact arm 15 Contact arm

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshihiko Sakai 4-7-8 Narashino, Funabashi-shi, Chiba F-term in TOWA SANGYO CO., LTD. 3C021 JA04 JA09 3C027 BB04

Claims (4)

[Claims] 1. A plurality of blade holders provided on a holder shaft so as to be displaceable in the axial direction thereof at predetermined intervals, and the long web is slit into a predetermined slit width by the blades held by each blade holder. In the jig, the fixed shaft is provided in parallel with the holder shaft, and the fixed shaft can be displaced in the axial direction, can swing back and forth around its axis, and is fixed. An interval setting bar provided detachably from the shaft and provided in parallel with the fixed axis, and at least a pair of abutment arms provided on the interval setting bar so as to be displaceable in the axial direction thereof. When the contact arm is fixed at the reference position on the interval setting bar and is sandwiched closely by two knife holders, the pitch between the blades of both knife holders is set to the interval setting bar of the other contact arm. A blade positioning jig which can be read as a slit width from a set position above. 2. The tool positioning jig according to claim 1, wherein a scale is provided along the interval setting bar. 3. Rollers that can roll by contact with each blade holder when each of the contact arms come into contact with each blade holder when they swing back and forth while being closely sandwiched between two blade holders. The tool positioning jig according to claim 1. 4. A reference position on an interval setting bar to which one contact arm is fixed is provided at each end of a movable range of the contact arm on the interval setting bar.
Or the blade positioning jig according to 3.