JP4380119B2 - Slitting machine for wallpaper pasting machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a slitter for a wallpaper pasting machine that applies glue to the back of a wallpaper.
[0002]
[Prior art]
Conventionally, in the pasting work of wallpaper, two kinds of construction methods, a lap cut construction and a butt construction, have been performed. The former is a method in which the adjacent wallpaper is stacked and pasted, and a ruler is applied to the overlapped part and cut with a cutter from above. The latter is a method in which both ends of the wallpaper are cut with a slitter at the time of gluing. It is a method of matching the cut surfaces of the matching wallpaper. Of course, only the paper at both ends of the wallpaper is cut with a slitter in advance in the butt construction as well as in the lap construction. Either method requires width adjustment to adjust the wallpaper to the required width, and therefore slitters have been used to adjust the width by cutting off both sides of the wallpaper. Various types of slitters for wallpaper pasting machines have been developed and put to practical use, but a typical one shown in FIG. 5 is known. ing.
[0003]
This slitter is attached to the cloth original fabric side of the gluing machine body by hooking the hook 19 to the stay of the gluing machine body, and the cutting tool receives the driving force by the gear from the gluing machine. The upper blade 1, the lower blade 2, the lower blade boss 14, the upper blade mounting shafts 12, 13, the lower blade mounting shaft 3, the guide roller 4, the presser roller 6, the spring 15, and the lower blade The blade fixing stay 7, the upper blade fixing stay 8, and the bearing brackets 5 and 20 are configured. In addition, a slitter of a type that has a drive motor in the slitter itself and can be set in a manual gluing machine is also known.
[0004]
The slitter for wallpaper pasting machine is a pair of upper blade 1 and lower blade 2 disposed on the front side and the back side of the wallpaper on mounting shafts that are substantially parallel to each other and orthogonal to the feeding direction of the wallpaper. The upper blade 1 and the lower blade 2 are pressed against each other on both sides in the feeding direction of the wallpaper, and a guide roller 4 is provided on the lower blade mounting shaft 3 of the lower blade 2. The lower blade mounting shaft 3 is supported by the lower blade fixing stay 7 by the bracket 5, and a pressing roller 6 and a spring 15 as a pressing means are disposed in the vicinity of the lower blade 2. The upper blade 1 is mounted on the upper blade mounting shafts 12 and 13, and the upper blade mounting shafts 12 and 13 of the upper blade 1 are supported by the upper blade fixing stay 8 via both end frames and the bearing bracket 20. ing.
[0005]
The upper blade mounting shafts 12 and 13 of the upper blade 1 are attached to the lower blade mounting shaft 3 of the lower blade 2 so as to be slightly inclined. The lower blade 2 is provided with a clearance angle and is in contact with one point.
[0006]
The slitter is provided with a cutter seal 9 and a scale plate 10. The lower blade mounting shaft 3 of the lower blade 2 is driven by the gluing machine side through several gears and is rotationally driven by a gear 21 mounted on the lower blade mounting shaft 3 through a drive connecting gear 11. The attachment shaft 13 of the right upper blade 1 rotates via a gear 22, and the upper blade attachment shaft 12 of the left upper blade 1 rotates the lower blade attachment shaft 3 of the lower blade 2 and the gear in the left frame. The upper blade 1 is rotated by being driven to transmit to a gear (not shown) of the upper blade mounting shaft 12 via the upper blade 1 (not shown). (See FIG. 9) In this conventional slitter for wallpaper pasting machine, the lower blade 2 is pressed against the upper blade 1 by the spring 15 interposed between the presser roller 6 and the lower blade 2, and the upper blade 1 and the lower blade. The cutting width of the wallpaper is made variable by changing the position of 2.
[0007]
The upper blade 1 is fixed to the upper blade mounting shafts 12 and 13 and rotates together with the mounting shaft. The lower blade 2 is attached to a lower blade boss 14 as shown in FIG. 6, and 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. It has become the axis of. The corner of the lower blade mounting shaft 3 having a D-shaped cross section is caught by the corner of the D-shaped hole of the boss 14 for the lower blade, so that the lower blade 2 rotates as the lower blade mounting shaft 3 rotates. . The wallpaper is cut when the wallpaper A passes through the portion where the upper blade 1 and the lower blade 2 are rotating.
[0008]
In addition, a slitter for wallpaper that makes it easy to set and fix the cutting blade to the required dimension width and adjust the spring pressure for pressure contact with the cutting blade, making the preparation and operation for cutting easy. Known as Kaihei 11-170192. This structure is shown in FIG.
[0009]
[Problems to be solved by the invention]
As described above, a slitter or the like that can easily align the cutting blade has been proposed and various developments have been made. However, there are still problems that are not sufficient and are desired to be solved.
[0010]
This is because the conventional upper blade 1 is fixed by a set screw or a lever 23 coming into contact with the upper blade mounting shafts 12 and 13 as shown in FIG. Since the fixed position of the upper blade 1 is arbitrarily changed, the hole provided in the upper blade boss 1a through which the upper blade mounting shaft 12 is passed in order to be able to slide smoothly with respect to the upper blade mounting shaft 12 is slightly attached to the mounting shaft. The diameter is larger than 12. The increased diameter of the hole becomes the backlash of the upper blade 1 when it is fixed, and the conventional fixing method is that the upper blade 1 is fixed to the upper blade mounting shaft 12 in a slightly non-right angle state. It has become.
[0011]
The reasons why the upper blade 1 is fixed in a non-right angle state are as follows. 1. The hole diameter of the upper blade boss 1a and the perpendicularity of the upper blade 1 mounting surface; 2. Parallelism of the blade surface of the upper blade 1 and the mounting surface to the upper blade boss; This occurs as a sum of three factors, namely, the inclination of the hole diameter of the upper blade boss 1a and the shaft diameter of the upper blade mounting shaft. As a result, the upper blade 1 is shaken during rotation.
[0012]
In fact, when cutting the wallpaper, if the upper blade runout exceeds 5/100 mm (5/100 mm), the seam of the wallpaper becomes conspicuous, making it difficult to construct or opening. It becomes a complaint. Therefore, it is necessary to keep the upper blade runout within 5/100 mm.
[0013]
However, of the above three elements: And 2. However, a processing error of about 0.01 to 0.015 mm is inevitably generated in terms of processing accuracy. If this processing accuracy is to be further increased, the machine itself to be processed must be a more accurate machine, and the processing cost will be very high.
[0014]
Therefore, in order to ensure the lowest cost and accuracy, 1. And 2. These elements are processed by the current equipment. We had to deal with it by improving the backlash of the game. That is, 1. And 2. 0.02 to 0.03 mm of wobbling, and 3. In this case, an accuracy of 0.02 mm or less must be ensured. Moreover, if the clearance is too small, the upper blade 1 cannot be smoothly slid. Therefore, the upper blade mounting shaft and the upper blade boss must have a certain clearance. Prepare various types of reamers according to the diameter, and process the upper blade boss hole diameter one by one with the corresponding reamer according to the shaft diameter of the upper blade mounting shaft so as to have a constant clearance. It took time and effort to manage the combination of bosses for the upper blade and one set.
[0015]
[Means for Solving the Problems]
Claim 1 of the present invention as means for solving the above-described problems is that the upper shaft and the lower blade disposed on the front surface side and the back surface side of the wallpaper on the mounting shaft at a position orthogonal to the feeding direction of the wallpaper. In a slitter for wallpaper pasting machine, which has a pair of cutting blades, and the pair of upper and lower blades press against each other in both sides of the wallpaper feed direction, the support shaft parallel to the upper blade mounting shaft is A lock lever is provided on the blade boss and is rotatably provided on the support shaft . The lock lever is disposed between the support shaft and the upper blade mounting shaft when the blade is rotated to fix the blade. At a depth that is parallel to the center line of the upper blade mounting shaft as viewed from the direction perpendicular to the center line of the upper blade mounting shaft and beyond the center of the support shaft from the lever side of the lock lever. , slit split which over the width direction of the support shaft direction of the lock lever By rotating the lock lever in the direction to close the slit split, and by contacting the lock lever with the shaft to which the boss for the upper blade is attached with the force to open the slit split, The slitter for a wallpaper pasting machine is provided with a locking mechanism in which the blade is fixed at a right angle to the upper blade mounting shaft.
[0016]
The lock lever is rotated in the direction to close the slit split, and the lock lever is contacted and fixed to the shaft for mounting the boss for the upper blade by the force to open the slit split. On the other hand, by providing a lock mechanism that can fix the upper blade at a right angle, the cutter can be straightly cut by eliminating the swing of the blade generated by the gap between the shaft and the hole.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described. A first embodiment is shown in FIGS. FIG. 1 is an explanatory view of an upper blade portion, and FIG. 2 shows a state in which the upper blade 1 of the first embodiment is attached to a slitter. As shown in FIG. 1, the upper blade 1 is fixed to the upper blade boss 1a with a screw. A lock lever 31 is rotatably attached to the upper blade boss 1 a by a support shaft 32. As shown in FIG. 1B, the lock lever 31 is provided with a slit split 31a in a side view. The position of the upper blade 1 is fixed by rotating the lock lever 31 to the solid line position so that the slit split is closed. When the lock lever 31 is rotated to the position of the two-dot chain line, the lock is released and the upper blade 1 is slidable with respect to the upper blade mounting shaft 13.
[0022]
The lock lever 31 has a certain amount of axial width with respect to the upper blade mounting shaft 13, and the upper blade 1 is fixed to the upper blade 1 by deforming the slit split 31 a to the full width to fix the upper blade 1. The upper blade 1 and the upper blade boss 1a are fixed by being moved parallel to the upper side of FIGS. 1 (a) and 1 (b) by a backlash of a hole provided in the upper blade boss 1a. Therefore, the blade edge of the upper blade 1 is fixed at right angles to the upper blade mounting shaft 13 without being shaken by rotation.
[0023]
Accordingly, it is not necessary to manage the delicate combination of the shaft diameter of the upper blade mounting shaft and the hole diameter of the boss for the upper blade as in the prior art, and even if the hole diameter is somewhat larger than the shaft diameter, the upper blade according to the present invention. 1 can be fixed at right angles without being inclined.
[0024]
If it is the structure of the above embodiment, the locking lever to be fixed at the deflection of the slit split 31 a 31 should be fabricated with capable elastic deformation of the resin or the like material. Then, the bending force of the slit split 31a is used to obtain a fixing force by sandwiching the upper blade mounting shaft 13 between the lower side of the hole of the upper blade boss 1a and the slit split 31a portion of the lock lever 31. . As long as the hole of the upper blade boss 1a is at right angles to the upper blade 1, even if the hole diameter is slightly larger than the shaft diameter, that is, even if there is a play that causes a problem in the prior art, In the invention, there is no problem, and the upper blade 1 is securely fixed at right angles to the upper blade mounting shaft 13. Therefore, it is not necessary to take time-consuming management or the like as in the prior art, and in the present invention, the upper blade 1 can be fixed to the upper blade mounting shaft 13 at a right angle.
[0025]
In the above, one side of the slitter for the wallpaper pasting machine has been described. Although there are an upper blade and a lower blade provided on the opposite side to the side described above, the description is omitted because the same structure as described above is adopted.
[0026]
Next, an embodiment of the second invention will be described. A second embodiment is shown in FIGS. In this embodiment, the taper pin 41 is used for the lock mechanism without using the lock lever 31 described above. A taper hole in which the taper pin 41 is installed is provided in the upper blade boss 1a. After the taper pin 41 is installed, a spring 42 is attached and the end plate 43 is screwed (see FIG. 3A). The taper pin 41 is always urged so as to protrude rightward by the spring 42 in FIG. A button 44 is attached to the taper pin 41.
[0027]
3A is a view for explaining the structure of the upper blade boss 1a when the taper pin 41 is viewed from above, and FIG. 3B is a view of the spring 42 when the taper pin 41 is viewed from the side. The taper pin 41 protrudes rightward by urging, and the upper blade 1 is fixed as a result by pressing the upper blade mounting shaft 13 in the upper blade boss 1a. FIG. 3C is a view showing a state in which the upper blade 1 is released from the locked state by pressing the button 44 and is slidable.
[0028]
In the taper pin 41, the surface in contact with the upper blade mounting shaft 13 is not tapered, but is a flat surface, and the other surface in contact with the taper hole in the upper blade boss is tapered.
[0029]
When positioning the upper blade 1, the button 44 is pressed to release the lock, slide to a desired position, and if the button 44 is released, the upper blade 1 is locked at that position and the upper blade 1 is fixed. . Also in the present embodiment, even if the hole diameter provided in the upper blade boss 1a is slightly larger than the diameter of the upper blade mounting shaft 13, the taper pin 41 protrudes to the right as shown in FIG. The upper blade 1 is fixed at a right angle without being inclined between the bottom surface of the taper pin 41 and the lower side of the hole diameter of the upper blade boss 1a.
[0030]
【The invention's effect】
As described above in the embodiment using the lock lever 31 and the taper pin 41, even if the hole diameter provided in the upper blade boss is slightly larger than the upper blade mounting shaft, the upper blade 1 is the upper blade. Since it can be fixed at right angles to the mounting shaft, conventional production management is not required, and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining a first embodiment of the present invention. FIG. 2 is a perspective view for explaining a first embodiment of the present invention. FIG. 3 is a diagram for explaining a second embodiment of the present invention. FIG. 5 is a perspective view showing a slitter for a conventional wallpaper pasting machine. FIG. 6 is a perspective view showing a blade part of a conventional slitter for a wallpaper pasting machine. FIG. 7 is a diagram for explaining a state of attachment of a slitter for a conventional wallpaper pasting machine. FIG. 8 is a diagram for explaining a state of attachment of a slitter for a conventional wallpaper pasting machine. Fig. 10 illustrates the structure. Fig. 10 illustrates the slide mechanism of a conventional slitter for wallpaper pasting.
A Wallpaper 1 Upper blade 2 Lower blade 3 Lower blade mounting shaft 4 Guide roller 5 Bearing bracket 6 Presser roller 7 Lower blade fixing stay 8 Upper blade fixing stay 9 Cutter seal 10 Scale plate 11 Drive coupling gear 12 Upper blade mounting shaft 13 Blade mounting shaft 14 Lower blade boss 15 Spring 19 Hook 20 Bearing bracket 21 Gear 22 Gear 23 Lever 24 Spring 31 Lock lever 31a Slit split 32 Support shaft 41 Taper pin 42 Spring 43 End plate 44 Button

Claims (1)

The mounting shaft at a position orthogonal to the wallpaper feeding direction has a pair of cutting blades, upper blades and lower blades, arranged on the front side and the back side of the wallpaper. In the slitter for wallpaper pasting machine in which a pair of upper blades and lower blades are in pressure contact with each other,
A support shaft parallel to the upper blade mounting shaft is provided on the upper blade boss, and has a lock lever provided rotatably on the support shaft.
When the lock lever is rotated to a state in which the cutter is fixed, the upper blade is viewed from the direction perpendicular to the center line of the upper blade mounting shaft to the portion located between the support shaft and the upper blade mounting shaft. A slit split across the width of the lock lever in the support shaft direction at a depth parallel to the center line of the mounting shaft and beyond the center of the support shaft from the lever side of the lock lever ;
By rotating the lock lever in the direction to close the slit split, the lock lever is brought into contact with and fixed to the shaft for attaching the boss for the upper blade with the force to open the slit split,
A slitter for a wallpaper pasting machine, characterized in that a lock mechanism for fixing the upper blade at a right angle to the upper blade mounting shaft is provided.

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