JP2000197839A - Slitter for wallpaper pasting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid adverse effect on blade width adjustment by dust by a method in which in a slitter to be fitted detachably to a wallpaper pasting machine, upper and lower shafts pivoting a pair of upper and lower rotary blades shearing the side fringe parts of a wall finish material are covered on both end sides of each rotary blade with dustproof covers. SOLUTION: In the slitter main body 1 of a slitter for a wallpaper pasting machine, a lower shaft 5 covering the whole length in the width direction of the main body 1 corresponding to the width direction of a wall finish material is installed, and an upper shaft 4 is installed on each of both upper end sides. The upper and lower shaft 4, 5 are interlocked/rotated through a gear box 10, and on each shaft 4, 5, a circular blade-shaped over cutter 2 and an under cutter 3 are arranged at positions shearing the side fringe parts of the wall finish material. Dustproof covers (bellows covers) 11a, 11b, 12a, 12b are fitted expandably/contractably on both sides of the cutters 2, 3 of each shaft 4, 5 to prevent the adhesion of dust to each shaft 4, 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter mounted on a wallpaper gluing machine for continuously applying glue to the back of a long wall material when, for example, a sheet-like wall material is attached to an indoor wall surface. More particularly, the present invention relates to a dustproof cover that covers an upper and lower shaft that supports a pair of upper and lower rotary blades.

[0002]

2. Description of the Related Art Conventionally, in a general wallpaper sizing machine, for example, as shown in FIG. 2 (a), a long sheet-like wall covering material 120 is drawn in from the rear and pulled out from the front. Wallpaper gluing machine main unit 10 that applies glue to the back side
0, the slitter 101 is attached with a hook 117 or the like,
Shearing the side edges of the wall covering 120 along its transport direction,
The desired wall covering width was adjusted.

As shown in a schematic configuration diagram of FIG. 2B, a conventional general slitter 101 for a wallpaper gluing machine includes an overcutter (upper blade) 102 supported by a short shaft 104 and a long cutter 102. It mainly includes a pair of upper and lower rotary blades, each of which includes an under cutter (lower blade) 103 supported by a shaft 105, a guide roll 106, and a spring stopper 107.

[0004] The overcutter 102 is of a round blade type and can slide on short shafts 104 separately mounted above both ends of the slitter 101, but is determined in accordance with a desired wall material width. After being positioned at the shearing portion, it is fixed on the short shaft 104 by tightening a set screw 102b attached to a boss 102a penetrating the overcutter 102.

The short shaft 104 has one end rotatably supported about a shaft via a bearing on a short shaft bracket 114 fixed inside the rear side plate 112 of the slitter 101, and the other end provided with a gear box 110. It is mounted above both ends of the slitter 101 in a state of being housed therein.

On the other hand, the undercutter 103 is also a round blade type, and is fixed to a cutter set boss 108 by being bossed. Also, under cutter 103
Are the spring stopper 107 and the spring 10
9 is slidably supported on the long shaft 105 together with the spring stopper 107.
7a is fixed on the long shaft 105 by tightening, and the spring 109, one end of which is held by the spring stopper 107, is moved from the other end to the under cutter 10
3 through the cutter set boss 108 and the spring 10
The elastic force of No. 9 always urges the cutter toward the over cutter 102.

The long shaft 105 includes a slitter 10
1 is disposed at both lower ends of the slitter 10.
A long shaft bracket 115 fixed inside the front side plate 113 is rotatably supported about the axis. The long shaft 105 rotatably supports a guide roll 106 for feeding the wall covering material into the main body 100 of the gluing machine at the center.

[0008] Both ends of the long shaft 105 are accommodated in the gear box 110, but a gear is provided near the tip, and the gear is fitted to the gear provided at the tip of the short shaft 104 in the gear box 110. It is in. Therefore, the rotation of the two gears causes the short shaft 104
In addition, the upper and lower rotating blades of the overcutter 102 and the undercutter 103 are rotated in opposite directions via the long shaft 105 while contacting each other.

Normally, in a state where the slitter 101 is attached to the sizing machine main body 100 by the hook 117, the drive of the sizing machine is transmitted to transmit the gearbox 110.
A power transmission gear 118 for rotating the upper and lower rotary blades of the overcutter 102 and the undercutter 103 and the guide roll 106 via the internal gears is provided outside the front surface of the gear box 110.

In such a configuration, the gluing machine main body 1
A plurality of rolls on the 00 side are driven to rotate by a motor.
(At this time, both ears of the wall material are sheared), the wall material is pulled in to the front side in the gluing machine main body 100, the drive of the roll is stopped, and the initial setting of the gluing is performed. .

After the initial setting of the gluing is completed, when the plurality of rolls and the over cutter 102 and the under cutter 103 on the gluing machine main body 100 side are rotated by driving the motor, the wall covering 120 is glued through the slitter 101. Since the desired cross width is obtained while being transported into the attaching machine main body 100, glue is applied to the back surface in the main body 100, and the liner is drawn out from the front face of the main body 100 while the liner is laminated on the glue application surface. Cutting is performed for each length equivalent to the height of the wall surface to which the material is to be attached.

[0012]

In a slitter for a general wallpaper sizing machine as described above, almost all components other than those in a gear box are exposed to the outside air.
As the usage time elapses, dust such as dust on the site and cutting powder of wall materials adhere and accumulate.

In particular, when such dust or dust accumulates on the shaft surface, the rotary blade cannot slide smoothly on the shaft surface, and it becomes difficult to adjust the width of the rotary blade. In addition, if fine dust enters between the shaft and the rotary blade, a fine gap is likely to occur between the upper blade and the lower blade, and the wall material can be sheared without obtaining a good contact state of both blades. Sometimes it goes away. However, there is a problem that it is difficult to clean the space between the shaft and the rotary blade and the like, and since the dirt cannot be removed unless the parts are disassembled, it takes time and effort.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a slitter for a wallpaper sizing machine in which the sliding of the rotary blade is always smooth, and the blade width adjustment and the adverse effect on the shearing due to dust can be avoided. It is in.

[0015]

To achieve the above object, a slitter for a wallpaper sizing machine according to the first aspect of the present invention is detachably attached to a main body of the wallpaper sizing machine, and has a pair of upper and lower members. Along with the rotation of the rotary blade, in a slitter for a wallpaper gluing machine that shears the side edges of the sheet-like wall covering conveyed to the gluing machine main body along the transport direction, the pair of upper and lower rotating blades is used. The upper shaft and the lower shaft, which are respectively slidably supported in the axial direction, are covered with dustproof covers that can expand and contract as the rotary blade slides, at both ends of each rotary blade.

Further, a slitter for a wallpaper gluing machine according to the invention according to a second aspect of the present invention is the slitter for a wallpaper gluing machine according to the first aspect, wherein each of the dustproof covers has a bellows shape.

In the present invention, since the shafts at both ends of the rotary blade are covered with the dustproof covers which can expand and contract in both upper and lower directions, no dust or dust adheres or accumulates on the shaft surface. The blade width can always be easily adjusted because the shaft can always slide smoothly on the shaft.

Further, since fine dust does not enter between the rotary blade and the shaft surface, and no gap is formed between the upper blade and the lower blade, the both blades can always come into good contact, and shearing of the wall material becomes difficult. Will not be. In addition, since there is no need for complicated cleaning, the work efficiency can be improved.

Further, since the dust-proof cover according to the present invention is extendable and contractible, it can follow the movement of the rotary blade along the shaft, and does not make the rotary blade width adjustment difficult. As a configuration of such a dustproof cover, for example, one having a bellows shape is simple. In the bellows-shaped dustproof cover, in the case of the upper shaft, two bellows covers for covering the shaft may be provided in a contracted and biased state on both ends of the upper shaft so as to sandwich the upper blade located substantially at the center. In the blade width adjustment, one bellows cover is further contracted with the movement of the upper blade, and at the same time, the bellows cover on the opposite side is released from the urging and is quickly extended.

Also, in the case of the lower shaft, two bellows covers which cover the shaft may be provided at both ends in a contracted and urged state so as to sandwich the lower blade. In the case where a guide roll for feeding into the machine body is installed, a cover may be provided only on the exposed portion between the lower blade and the end of the guide roll. Further, if a spring stopper is provided between the lower blade and the guide roll, a cover for covering the entire spring may be provided separately between the spring stopper and the lower blade.

The upper and lower rotating blades may be provided only at one end of the slitter, or may be provided at both ends of the slitter. In either case, at least one of the shafts supporting each rotating blade is provided. Provide a dust-proof cover in the blade movement area.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a slitter provided with a bellows-shaped dustproof cover as one embodiment of the present invention.
FIG. 1 is a partial sectional view of one end of a slitter having the same basic configuration as that shown in FIG. Here, the other end of the slitter is omitted as having a configuration symmetrical to the portion shown in FIG.

In the slitter for a wallpaper sizing machine according to the present embodiment, first, a lower shaft 5 is provided on the slitter main body 1 over the entire left and right lengths in the main body width direction corresponding to the width direction of the wall covering material to be sheared. Upper shafts 4 are provided at both upper ends thereof. That is, one end of each upper shaft 4 is housed in the gear box 10 on both sides of the slitter main body 1, and the other end of the upper shaft 4 is attached to an upper bracket 14 fixed to the upper inner side of the rear surface of the main body 1 via a bearing. The lower shaft 5 is rotatably supported at the center and slidable in the axial direction. The lower shaft 5 is housed in a gear box 10 at both ends below the upper shaft 4 and is fixed to a lower inner surface of the front surface of the main body 1. The lower bracket is rotatably supported on a lower bracket via a bearing so as to be rotatable about the center of the shaft and slidable in the axial direction.

A round blade-type overcutter 2 is slidably supported on the upper shaft 4 at a substantially central portion thereof. Each overcutter 2 is fixed on the upper shaft 4 by tightening a boss 16 formed on the overcutter 2 with a set screw.

On both sides of the lower shaft 5, a round blade type under cutter 3 is provided with a cutter set boss 8.
And is slidably supported on the lower shaft 5 together with the cutter set boss 8. Lower shaft 5
Further, a spring 9 having one end abutting on the undercutter 3 via a cutter set boss 8 and a spring stopper 7 holding the other end of the spring 9 are slidably supported respectively.

The spring stoppers 7 are fixed to the lower shaft 5 by respectively tightening set bolts. Therefore, when the spring stopper 7 is fixed,
The undercutter 3 is always moved by the elastic force of the spring 9 via the cutter set boss 8 to the overcutter 2.
And is positioned and fixed substantially on the lower shaft 5. A guide roll 6 is rotatably supported at the center of the lower shaft 5 to smoothly feed the wall covering material to be conveyed into the main body of the gluing machine.

As described above, a pair of upper and lower rotations for shearing one side edge of the wall covering by the overcutter 2 and the undercutter 3 supported on one end of the upper and lower shafts (4, 5). Blades are configured and the shaft (4,
The pair of upper and lower rotary blades for shearing the other side edge is constituted by the overcutter 2 and the undercutter 3 which are pivotally supported on the other end side of 5).

In the gear box 10, a gear G1 is fixed to the end of each upper shaft 4 and a gear G2 is fixed to both ends of the lower shaft 5, respectively. The gear G1 and the gear G2 are fitted at both ends. Therefore, when the driving of the gluing machine is transmitted to the gear G2 via the transmission gear G3 in a state where the slitter is attached to the body of the gluing machine, the lower shaft 5 rotates with the gear G2, The gear G1 fitted to the gear G2 also rotates in the opposite direction, and accordingly, the upper shaft 4 also rotates. Due to the rotation of the upper and lower shafts (4, 5) in the opposing directions, the pair of overcutters 2 and the undercutters 3 that abut each other also rotate in the opposing directions, and the wall material conveyed between the two cutters is sheared.

Further, in this embodiment, bellows covers (11, 12), which are dustproof covers, are extendable on both ends of the over cutter 2 of the upper shaft 4 and both ends of the under cutter 3 of the lower shaft 5, respectively. Installed.

That is, in the upper shaft 4, the upper bellows cover 11a that covers from the boss 16 of the over cutter 2 to the gear box 10 and the upper bellows cover 11b that covers from the over cutter 2 to the upper bracket 14 are in a contracted and biased state. The lower shaft 5 includes a lower bellows cover 12a that covers from the undercutter 3 to the gear box 10, a lower bellows cover 12s that covers the boss 8 of the undercutter 3 from the spring stopper 7 together with the spring 9, and a spring. A lower bellows cover 12b that covers from the stopper 7 to the end of the guide roll 6 is attached in a contracted and biased state.

Therefore, in adjusting the width of the rotary blade, for example,
Put the over cutter 2 on the shaft 4 and the gearbox 10
The upper bellows cover 11a of the gear box 10 is further contracted at the bellows portion, and the upper bellows cover 11b of the upper bracket 14 is somewhat released from the biasing force to extend the bellows portion. Thus, the upper bellows cover (11) that covers the upper shaft 4 at both ends of the over cutter 2
a, 11b) respectively follow and expand and contract quickly as the overcutter 2 slides.

On the other hand, as the over cutter 2 slides toward the gear box 10 on the lower shaft 5, the shaft 5 is moved toward the gear box 10 until the under cutter 3 comes into contact with the over cutter 2 by the urging force of the spring 9.
Slide on top. As the under cutter 3 slides, the bellows portion of the lower bellows cover 12a on the gear box 10 side is further contracted, the biasing force on the lower bellows cover 12s on the spring stopper 7 side is released to some extent, and the bellows portion becomes Extends with. As described above, also in the lower shaft 5, the lower bellows covers (12a, 12s) covering both end sides of the under cutter 3 quickly follow and expand and contract as the under cutter 3 slides.

Therefore, in the slitter according to the present embodiment, the shaft is always covered with the dustproof cover at both ends of each of the overcutter 2 and the undercutter 3, so that the dust and the shearing powder of the wall material are placed on the shaft. Dust is prevented from adhering, and no dust or dust enters between each cutter and the shaft, so that each cutter slides smoothly in the adjustment of the rotary blade width, and dirt that hinders contact between the upper and lower cutters. There is no accumulation of water and the shearing of the wall covering is always good, and no troublesome cleaning is required.

Further, in this embodiment, a dustproof cover is provided on both ends of the spring stopper 7 of the lower shaft 5. Therefore, the spring stopper 7
When the spring stopper 7 slides, the lower bellows cover 12s covering the entire spring 9 on the gear box 10 and the lower bellows cover 12b on the guide roll 6 follow and expand and contract quickly.

Therefore, since the shaft is always covered with the dust-proof cover at both ends of the spring stopper 7, dust such as dust or shearing powder of wall material adheres to the shaft around the spring stopper 7. The spring stopper 7 is prevented from entering between the shaft and the spring stopper 7, so that the slide for positioning the spring stopper 7 is always smooth. Further, since there is no possibility that dust or dirt enters the spring 9 and accumulates, the expansion and contraction of the spring 9 is always smooth.

[0036]

As described above, according to the slitter for wallpaper sizing of the present invention, since the shaft supporting the upper and lower rotary blades is covered with the extendable dustproof cover, each rotary blade, spring stopper, etc. Can prevent the members from sliding on the shaft and the adhesion of dust and dirt, which makes it difficult for the vertically rotating blades to shear the wall covering. The adjustment of the blade width, the positioning of the spring stopper, and the shearing of the wall material can always be performed satisfactorily without the need for a cutting tool.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing a schematic configuration of a slitter for a wallpaper sizing machine according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing an example of a conventional slitter for a wallpaper gluing machine, where (a) is a side view showing a state where the slitter is attached to a gluing machine main body, and (b) is a schematic configuration of the slitter main body. FIG.

[Explanation of symbols]

 1: Slitter body 2: Over cutter 3: Under cutter 4: Upper shaft 5: Lower shaft 6: Guide roll 7: Spring stopper 8: Under cutter boss 9: Spring 10: Gear box 11a, 11b: Upper bellows cover 12a, 12s , 12b: Lower bellows cover 14: Upper bracket 16: Overcutter boss G1, G2, G3: Gear

Claims (2)

[Claims] 1. A side edge portion of a sheet-like wall covering which is detachably attached to a main body portion of a wallpaper gluing machine and is conveyed to the main body portion of the gluing machine with rotation of a pair of upper and lower rotating blades. In a slitter for a wallpaper gluing machine that shears along a transport direction, an upper shaft and a lower shaft that support the pair of upper and lower rotating blades so as to be slidable in the axial direction, respectively, with the sliding of the rotating blades. A slitter for a wallpaper sizing machine, wherein both ends of each rotary blade are covered with an extendable dustproof cover. 2. The slitter for a wallpaper sizing machine according to claim 1, wherein each of the dustproof covers has a bellows shape.