JPH0135831Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a horizontal perforation blade fixing device for making horizontal perforations at a constant pitch on continuous paper used for form printing and the like.

[Conventional technology]

Conventionally, to fix a sewing machine blade that makes this type of horizontal perforation, as shown in FIGS. 6 and 7, a piece C that fits the mounting groove B is placed in the mounting groove B provided in the sewing machine barrel A. A sewing machine blade E is inserted between one inner wall of the mounting groove B and the piece C by pressing the piece C with a large number of bolts D that are housed and screwed together at regular intervals on the piece C. There is an existing one that is pressed and fixed against the inner wall.

[Problem that the invention attempts to solve]

In the conventional fixing device mentioned above, since a large number of bolts are individually operated and pressed through the pieces, the pressing force is not constant and uneven, and furthermore, the operation is troublesome and the workability is poor.

[Means for solving problems]

In view of this situation, the present invention was devised to eliminate this problem, and it consists of a pair of piece pieces each having a tapered surface on the opposing surfaces and a flat surface on the other side of the tapered surface, with the tapered surfaces stacked one on top of the other. movably housed in a mounting groove provided in the sewing machine barrel by appropriate means, further interposing a band-shaped body having a sewing machine blade between the flat side of one of the pieces and the inner wall of one of the mounting grooves, The sewing machine blade body is crimped and fixed to the inner wall of the mounting groove by moving a pair of pieces in opposite directions, and the purpose is to facilitate work and to even out the pressing force on the sewing machine blade. It is.

〔Example〕

Next, one embodiment of the horizontal perforation blade fixing device according to the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 1 denotes a sewing machine barrel, around which longitudinal mounting grooves 2 are provided at one or more locations depending on the pitch of perforations, and bearers 3, 3 are mounted at both left and right ends.

Reference numeral 4 denotes a piece having a flat surface a and a tapered surface b on the opposite side, and both sides of the tapered surface of this piece 4 are provided on a horizontal plane c parallel to the plane a. Also piece 4
A screw hole 5 is provided on the thick side of the end face, and a screw shaft 6 (described later) is screwed into this screw hole 5, so that the piece 4 is moved by rotation of the screw shaft 6.

Further, the pieces 4 are arranged in two pairs, and the pieces 4, 4 are provided in opposite directions so that the tapered surfaces b of the pieces 4 are overlapped with each other.
Two pairs are housed side by side inside. At this time, screw shafts 6 with left and right screws are screwed into the screw holes 5, 5 which are inside of each other.
are screwed together, and the center of this shaft 6 is provided with an operation part 6a with a locking hole for operation, and the screw holes 5, 5 of the piece pieces 4, 4 on both ends of the sewing machine barrel 1, The screw shafts 6, 6 rotatably fitted and held in the bearers 3, 3 are screwed together, and by rotating the respective screw shafts 6, the piece pieces 4, 4 and 4, 4 are formed on the tapered surfaces b,
b, so that the distance W between the planes a and a can be increased or decreased.

Reference numeral 7 denotes a band-shaped cutter body having a sewing machine blade 7a on its edge, which is adapted to the length of the sewing machine barrel 1 and is interposed between one inner wall of the mounting groove 2 and the plane a of the piece 4. Place it in the same way and press it to the inner wall with the piece 4 to fix it.

[Effect]

As is clear from the above-mentioned structure, the present invention moves pieces 4, 4 and 4, 4 housed in the mounting groove 2 provided in the sewing machine barrel 1, and moves the pieces 4, 4 and 4, 4 between the plane a and one inner wall of the mounting groove 2. The sewing machine blade main body 7 is inserted with the sewing machine blade 7a on the outside, and the height position of the sewing machine blade 7a is first positioned with reference to the bearers 3, 3 attached to the sewing machine body 1, and then the pieces 4, 4 are inserted. By rotating the screw shaft 6, the screw shafts 6 are moved in opposite directions along the tapered surfaces to increase the interval W between the planes, so that one plane is received on the other inner wall of the mounting groove 2, while the interval between the other planes becomes larger. Accordingly, the blade main body 7 is pressed against the other inner wall of the mounting groove 2 and fixed by pressure.

Therefore, the pressing force applied to the cutter main body 7 is fixed by a constant force applied by the piece 4, and furthermore, the workability is good because only a minimum amount of rotation of the screw shaft is required.

〔effect〕

As described above, the present invention is to move a pair of pieces, each having a tapered surface on the opposite side and a flat surface on the other side of the tapered surface, into a mounting groove provided in the sewing machine barrel with the tapered surfaces overlapped. accommodate as much as possible,
Furthermore, a band-shaped body with a sewing machine blade is interposed between the flat side of this one piece and one inner wall of the mounting groove, and by moving the pair of pieces in opposite directions, the sewing machine blade body is attached to the inner wall of the mounting groove. This is a horizontal perforation machine blade fixing device characterized by crimping and fixing.By moving in opposite directions along the tapered surfaces provided on the opposing surfaces, the distance between the planes increases and decreases. The received piece is the other flat surface and presses the blade main body interposed between the flat surface and the other inner wall, so that the pressing force of the blade main body is uniformly and evenly pressed. Furthermore, since the movement of the piece is performed by a screw shaft that is screwed into a screw hole provided at the end, there is no need to operate a large number of bolts as in the conventional case, resulting in improved workability.

[Brief explanation of the drawing]

The drawings show an embodiment of the horizontal perforation blade fixing device according to the present invention, in which Fig. 1 is a perspective view of the piece, Fig. 2 is a front view of the sewing machine blade fixed to the sewing machine barrel, and Fig. 3 is a perspective view of the sewing machine blade fixed to the sewing machine barrel. Figure 2 is a side view taken along line X-X, Figure 4 is a side view of
Figure 5 is a partial cross-sectional view taken along line Y-Y, Figure 4 is line Z-
The cross-sectional view taken along the Z line, Figures 6 and 7 show the conventional sewing machine blade fixing structure. Figure 6 is a side view of the blade installed on the sewing machine barrel, and Figure 7 is the cross-sectional view taken along the line M-M in Figure 6. It is a front view of a part. 1... Sewing machine barrel, 2... Mounting groove, 3... Bearer, 4... Piece piece, 5... Screw hole, 6... Screw shaft,
6a... Operating part, 7... Blade body, 7a... Sewing machine blade, a... Plane, b... Tapered surface, c...
horizontal plane.

Claims (1)

[Scope of utility model registration request] A pair of piece pieces each having a tapered surface on the opposite side and a flat surface on the other side of the tapered surface are movably housed in a mounting groove provided in the sewing machine barrel with their tapered surfaces overlapped, and further A belt-shaped body with a sewing machine blade is interposed between the flat side of one piece and the inner wall of one of the mounting grooves, and the sewing machine blade body is crimped and fixed to the inner wall of the mounting groove by moving the pair of pieces in opposite directions. A horizontal sewing machine blade fixing device.