JP2000141284A - Slitter for wall paper starcher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems such as the abnormal noise, the partial abrasion of a cutter or the like by rotatably and slidably supporting one of a pair of cutting blades to a mount shaft in a wall paper slitter comprising a pair of cutting blades closely contacted with one another while staggered. SOLUTION: A slitter comprises a pair of upper blade 1 and lower blade 2 closely contacted with one another in a staggered state at both sides of the wall paper, and the wall paper is cut by this close contact part. On this occasion, a conventional D-shaped hole of a boss 14 for the lower blade is changed to a round hole, and the boss 14 is rotatably and slidably mounted on a lower blade mount shaft 3. The boss 14 is pressed to the upper blade 2 with the constant pressure by a pressing roller 6 and a spring 15. The boss 14 is slided against a spring 15 to constantly keep the contact pressure of the upper and lower blades, so that the boss can be smoothly rotated even when a blade surface of the upper blade 1 or the lower blade 2 is vibrated to some degree when the boss 14 is rotated in accompany with the upper blade 1 by the contact frictional resistance by the pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter used for a wallpaper sizing machine.

[0002]

2. Description of the Related Art Conventionally, in the pasting work of wallpaper, two types of construction methods have been performed, that is, an overlap cutting operation and a striking operation. In the former, the wallpaper next to each other is overlaid and pasted,
This method cleans the joint by applying a ruler to the overlapping part and cutting it with a cutter from above.The latter is to cut both ends of the wallpaper with a slitter at the time of gluing and abut the cut surface of the adjacent wallpaper and construct it Is the way.
Of course, not only in the butting work but also in the overlap cutting work, it is common to cut in advance only the paper at both ends of the wallpaper with a slitter. Both methods require width adjustment to adjust the wallpaper to a required width, and a slitter has been used to cut off both sides of the wallpaper and adjust the width. Various types of slitters for this wallpaper gluing machine have been developed and put into practical use, but a typical one is shown in FIG. ing.

This slitter is attached to the cloth material side of the sizing machine main body as shown in FIGS. 2 and 8 by hooking a hook (19) to a stay of the sizing machine main body. The blade is rotated in response to this, and mainly the upper blade (1), the lower blade (2), the boss (14) for the lower blade, the upper blade mounting shafts (12) and (13), and the lower blade mounting shaft. (3), guide roller (4), holding roller (6),
It comprises a spring (15), a lower blade fixing stay (7), an upper blade fixing stay (8), and brackets (5) and (20).

[0004] The slitter for the wallpaper gluing machine has an upper blade (1) and a lower blade arranged on a mounting shaft at a position substantially parallel to each other and at right angles to the feeding direction of the wallpaper, respectively, on the front side and the back side of the wallpaper. (2), the upper blade (1) and the lower blade (2) are pressed against each other in a staggered manner on both sides in the wallpaper feeding direction. A guide roller (4) is provided on the lower blade mounting shaft (3),
The lower blade mounting shaft (3) is supported by the lower blade fixing stay (7) by the bracket (5), and a pressing roller (6) as a pressing means and a spring (15) are provided near the lower blade (2). ) Is arranged. The upper blade (1) is mounted on the upper blade mounting shafts (12) and (13). The upper blade mounting shafts (12) and (13) of the upper blade (1) connect the frames at both ends and the bracket (20). It is supported by a stay (8) for fixing the upper blade.

[0005] Upper blade mounting shaft (12) (13) of the upper blade (1)
Is attached to the lower blade mounting shaft (3) with a slight inclination with respect to the lower blade (2). By inclining the upper blade with respect to the lower blade, the upper blade (1) and the lower blade (2) that come into contact with each other. Are provided with a clearance angle, and are brought into contact at one point.

The slitter is provided with a cutter seal (9), a scale plate (10), and the like. The lower blade mounting shaft (3) of the lower blade (2) is driven through several gears from the sizing machine side, and is mounted on the lower blade mounting shaft (3) through the drive connection gear (11). The shaft (13) of the upper blade (1) on the right side is rotationally driven by the set gear (21).
Rotates through a gear (22), and the upper blade mounting shaft (12) of the upper blade (1) on the left side rotates the lower blade mounting shaft (3) of the lower blade (2) on the gear in the left frame. The upper blade (1) is rotated by being transmitted to a gear (not shown) of an upper blade mounting shaft (12) via a (not shown). (See FIG. 4) In this conventional slitter for a wallpaper sizing machine, the lower blade (2) is moved to the upper blade (1) by a spring (15) interposed between the press roller (6) and the lower blade (2). The cutting width of the wallpaper is made variable by changing the positions of the upper blade (1) and the lower blade (2).

The upper blade (1) is an upper blade mounting shaft (12) (13).
And rotates with the mounting shaft. The lower blade (2) is shown in FIG.
The lower blade boss (14) is attached to the lower blade boss (14) as shown in (1). The lower blade boss (14) has a hole having a D-shaped cross section, and the lower blade mounting shaft (3) is chamfered to have a D-shaped cross section. Axis. When the corner of the D-shaped hole of the lower blade boss (14) is hooked on the corner of the lower blade mounting shaft (3) having the D-shaped cross section, the lower blade is prevented from rotating and the rotation of the lower blade mounting shaft (3) occurs. The lower blade (2) rotates. Then, the wallpaper A is cut by the wallpaper A passing through the portion where the upper blade (1) and the lower blade (2) are rotating.

[0008]

Even if the lower blade (2) is pressed against the upper blade (1) with a constant pressing force by the pressing roller (6) and the spring (15), the uneven pattern of the cut wallpaper is obtained. As a result, the rotation was not smooth and the rotation load became heavy during one rotation.

When the rotation becomes heavy, this load is transmitted to the side of the sizing machine which drives the slitter via gears. However, the drive motor on the side of the sizing machine tries to rotate against the load. I do. For this reason, as shown in FIG. 5, a force for lifting the slitter acts between the gears at the connection portion between the gluing machine body and the slitter for the wallpaper gluing machine, which causes a problem that the slitter rattles during operation. I was

On the other hand, if the blade surface of the upper blade (1) or the lower blade (2) is slightly deviated from the axis, the lower blade (2) faces the lower blade mounting shaft ( Rotation is performed by the corner of the D-shaped hole of the lower blade boss (14) catching on the corner of the D-shaped lower blade mounting shaft (3), rather than the force of sliding in the axial direction of 3) to escape. Since the force to be applied is larger, the lower blade (2) does not escape (slid in the axial direction), and the contact pressure between the upper blade (1) and the lower blade (2) is lower than the contact pressure specified by the spring. , And as a result, there have been places where the resistance to rotation is increased.

As the upper blade (1) and the lower blade (2) are worn, the blade surface wears out during use. Usually, the hardness of the blade is such that the lower blade is harder than the upper blade. The upper blade wears more. The degree of abrasion of the upper blade was such that the greater the deflection of the blade surface of the blade, and the greater the inclination angle of the upper blade with respect to the lower blade, the more likely it was to cause uneven wear, resulting in a decrease in cutting performance and durability. . If the angle of inclination of the upper blade with respect to the lower blade is too large, the blade surface of the upper blade will be largely scraped off during the break-in operation of the assembled blade, and the width of the blade with a large run-out of the blade surface will not be sharpened during the break-in operation. There is a problem that the wallpaper becomes uniform and the wallpaper cannot be cut cleanly. Further, an unpleasant sound (sound that becomes a squeaky key) was generated during operation due to a change in the contact pressure between the upper blade (1) and the lower blade (2).

[0012]

In the slitter for a wallpaper gluing machine according to the first aspect of the present invention, on both sides in the feeding direction of the wallpaper, at positions orthogonal to the feeding direction, on the front and back sides of the wallpaper. Each of the mounting shafts has a pair of cutting blades, and the pair of cutting blades are slitters for wallpaper cutting that are pressed against each other in a staggered manner, and one of the pair of cutting blades is the above-described cutting blade. A holding means rotatable and slidable with respect to the mounting shaft and pressing against the other cutting blade is provided.

According to a second aspect of the present invention, there is provided the slitter for a wallpaper gluing machine according to the first aspect of the present invention, wherein the mounting shaft of one of the pair of left and right cutting blades is further mounted. For the mounting axis of the other cutting blade,
It is characterized by being inclined by 0.1 degrees to 0.8 degrees.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The invention of this application has the above-mentioned features, but the embodiments will be shown below and the embodiments of the invention will be described in more detail.

As shown in FIGS. 6 (a) and 6 (b), the conventional D-shaped hole (FIG. 6 (a)) of the lower blade boss (14) is changed to a round hole (FIG. 6 (b)). The difference from the conventional one is that the upper blade (1) is rotatably and slidably mounted on the lower blade mounting shaft (3). To a constant pressure.

Since the lower blade boss (14) has a round D-shaped hole, it slides even when the lower blade mounting shaft (3) is rotated by itself. However, the lower blade boss (14) is spring-loaded by the spring (15) and the pressing roller (6). By pressing against the upper blade (1), it rotates along with the upper blade (1) with contact frictional resistance.

[0017] Even if the blade surface of the upper blade (1) or the lower blade (2) is slightly deflected, the lower blade (2) is rotatable and slidable with respect to the lower blade mounting shaft (3). (1
5), the lower blade boss (14) slides against the force of the spring against the runout of the blade surface, and rotates in the same manner as the conventional one to keep the contact pressure between the upper and lower blades constant. The resistance did not become heavy, and it came to rotate smoothly. In addition, it was confirmed that the wallpaper could be cut well with the above structure if the pressing force of the spring (15) was adjusted so that the lower blade (2) did not stop rotating when cutting the wallpaper A.

Further, in order to incline the upper blade with respect to the lower blade, the upper blade mounting shafts (12) and (13) are connected to the lower blade lower blade mounting shaft (3).
On the other hand, in the related art, the inclination is about 0.9 degrees, but the inclination angle is reduced to about 0.5 degrees. As a result, the wear of the blade surface is reduced, and the possibility of uneven wear when the blade surface of the blade is waving is further reduced. This inclination angle is 0.9
If it is larger than the degree, the blade surface will be largely scraped off in the initial running-in operation. If the angle is less than 0 degree, the contact position between the upper blade and the lower blade is deviated. Therefore, the angle is preferably set to about 0.1 to 0.8 degrees.

In the above embodiment, the D-shaped hole of the lower blade boss is merely a round hole. However, as shown in FIG. 7, a bush (16) or the like may be appropriately pressed into the round hole and used. Good. By press-fitting and using the bush (16) and the like, it is possible to rotate and slide more smoothly.

In the above description, the lower blade (2) is rotatable and slidable on the lower blade mounting shaft (3) as a structure that is currently the mainstream. However, the lower blade is fixed and the lower blade is fixed. A holding roller or the like may be arranged on the upper blade side, and the upper blade (1) may be freely rotatable and slidable on the upper blade mounting shafts (12) (13).

[0021]

As described in detail above, the present invention eliminates problems such as lifting of the slitter, abnormal noise, uneven wear of the blade, reduced durability, etc., which occur in the conventional slitter, and reduces the durability of the blade. Improved character and smooth cutting.

[Brief description of the drawings]

FIG. 1 is a diagram showing the appearance of a slitter for a wallpaper gluing machine.

FIG. 2 shows a state in which a slitter is attached to a wallpaper gluing machine.

FIG. 3 is a view for explaining the structure of a blade portion;

FIG. 4 is a diagram illustrating the structure of a slitter for a wallpaper gluing machine.

FIG. 5 illustrates a conventional problem.

6A is a diagram illustrating a conventional lower blade boss. FIG. 6B is a diagram illustrating a lower blade boss of the present invention.

FIG. 7 is a view for explaining a lower blade boss using a bush or the like.

FIG. 8 is a side view showing a state where a slitter is attached to a wallpaper gluing machine.

[Explanation of symbols]

 A Wallpaper 1 Upper blade 2 Lower blade 3 Lower blade mounting shaft 4 Guide roller 5 Bracket 6 Holding roller 7 Lower blade fixing stay 8 Upper blade fixing stay 9 Cutter seal 10 Scale plate 11 Drive connection gear 12 Upper blade mounting shaft 13 Upper blade mounting shaft 14 Lower blade boss 15 Spring 16 Bush 17 Frame 18 Cover 19 Hook 20 Upper blade bearing bracket 21 Gear 22 Gear

Claims (2)

[Claims] 1. A pair of cutting blades each having a mounting shaft disposed on the front and back sides of the wallpaper at positions orthogonal to the feeding direction on both sides of the wallpaper in the feeding direction, and the pair of cutting blades. Is a slitter for wallpaper cutting that is pressed against a staggered shape, and one of the pair of cutting blades is rotatable and slidable with respect to the mounting shaft, and a presser that presses against the other cutting blade. A slitter for a wallpaper sizing machine, characterized in that means is provided. 2. The mounting shaft of one of the pair of left and right cutting blades is inclined by 0.1 to 0.8 degrees with respect to the mounting shaft of the other cutting blade. A slitter for a wallpaper gluing machine according to 1.