JPH08192310A - End part cutting device for band blade - Google Patents

Abstract

PURPOSE: To finish a cut end face slantingly when an end part of a band blade is cut square by supporting a working table on a base plate via a slanting angle regulating means which can vary a slanting angle of the band blade mounting face in a device cutting the end part of a band blade such as a Thomson blade. CONSTITUTION: Working tables 13-16 are arranged in four positions around a cutting mechanism 12 consisting of a block 17 in which a fixed blade is formed in a corner part and a movable lever which is inserted into a guide hole in the block 17 freely reciprocatively and is provided with movable blades formed on both ends of a shoulder part, and each of the working tables 13-16 is supported on an upper plate (base plate) 11a of a casing 11 via a slanting angle regulating means 31. The slanting angle regulating means 31 consists of height regulating screw shaft bodies 35, 37 and the like screwed to screw holes arranged in three positions, which are not located in the same line, on the base plate 11a, and by means of the height regulating screw bodies 35, 37, a plate-shaped part end face of a band blade is slanted, so that the cut end face can be finished slantingly when the end part of the band blade is cut square.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for cutting the end of a band blade such as a Thomson blade.

[0002]

2. Description of the Related Art The Thomson blade wood pattern used for punching a plate material or sheet material made of wood, paper, cloth, leather, plastic or the like into a predetermined shape or forming cuts of a predetermined shape in them. As illustrated in FIG. 7, a predetermined number (two in the illustrated example) of the band blades 1 and 1 ′ having a predetermined shape are provided on the substrate 2
It is produced by pressing and embedding it in the slit-shaped cut 3 formed in the.

FIG. 8 shows the sectional shape of a Thomson blade wood type band blade 1'of this type. As shown in the same figure, the band blade 1'has a chevron-shaped blade portion 4'having an acutely pointed blade edge 4'and inclined surfaces 5 ', 5'extending from the blade edge 4', and its blade portion 6 '.
And a plate-shaped portion 7 ′ having one end edge portion in the width direction. Then, the end face of another one of the band blades 1 having the same cross-sectional shape is abutted against the side surface of this band blade 1 '. In this case, the band blade 1 on the butting side
The end face (hereinafter, referred to as one of the band blades) is finished in a shape in which the edge of the blade portion 6 projects from the edge of the plate-shaped portion 7 in an acute angle shape, and when both are butted, as shown in FIG. The end portion of the blade edge 4 of the blade portion 6 of one of the band blades 1 comes into contact with the blade edge 4'of the band blade 1'on the side where it is abutted (hereinafter referred to as the other band blade) without creating a gap. It is desirable to have

In the band blade 1, the edge cutting of the band blade 1 when finishing the edge of the blade 6 from the edge of the plate-like portion 7 in an acute angle as described above is called "corner cutting". It is commonly known as ".

Conventionally, a device for cutting the end portion of the band blade for performing this corner cutting is described in, for example, Japanese Patent Laid-Open No. 2-218509. This one is equipped with a cutting blade for corner cutting consisting of a fixed blade and a movable blade that is reciprocally moved in a pulling path with respect to this fixed blade. It projects vertically upward from the flat band blade mounting surface. Therefore, when one of the band blades 1 whose edges are cut off by this device is embedded in the substrate 2 as shown in FIG. 8, when the end face 7a of the plate-shaped portion 7 is viewed from the side, the end face 7a is the substrate 2 It stands up vertically from. Therefore, as shown by the alternate long and short dash line in the figure, the other band blade 1 '
Axis C-C is perpendicular to the substrate 2, or as indicated by the chain double-dashed line in FIG.
Only when -C is inclined toward the lower side from the end surface 7a of the plate-like portion 7 of one of the band blades 1, the both band blades 1,
The blade edges 4, 4'of 1'can be contacted. However, as shown by the alternate long and short dash line in FIG.
The axis C-C of the lower end is the end face 7 of the plate-like portion 7 of the one band blade 1 toward the lower side.
When inclined so as to approach a, the blade edges 4 and 4'of both band blades 1 and 1'are separated, and a gap S is formed between them.
Will occur.

[0006]

The inventor of the present application has conducted extensive studies, and as a result, as shown in FIG. 10, the end face 7a of the plate-like portion 7 of one of the band blades 1 from the blade portion 6 is removed. If you incline it so that it becomes deeper as you move away, the other band blade 1
The axis C-C of the lower end is the end face 7 of the plate-like portion 7 of the one band blade 1 toward the lower side.
Even when inclined so as to approach a, it becomes possible to contact the blade edges 4 and 4'of both band blades 1 and 1 ', and in this way, the plate-shaped portion of one band blade 1 If the end surface 7a of 7 is inclined, even when the axis C-C of the other band blade 1'is vertical to the substrate 2 as shown in FIG. 11, or as described in FIG. Even when the axis C-C (two-dot chain line) of the blade 1'is inclined so as to be separated from the end surface 7a of the plate-shaped portion 7 of one of the band blades 1 toward the lower side, the cutting edges of both band blades 1 and 1 ' I found out that 4,4 'can be contacted. 10 and 11, L is a vertical line with respect to the substrate 2, and α is its vertical line L.
Is an inclination angle of the end face 7a with respect to.

The present invention has been made under the above circumstances, and is basically based on the adoption of the basic configuration of the band blade end cutting device described in Japanese Patent Laid-Open No. 2-218509. It is an object to make it possible to incline the plate-shaped end surface of the band blade as described in FIG.

[0008]

An end cutting device for a band blade according to a first aspect of the present invention comprises a cutting blade composed of a fixed blade and a movable blade reciprocating along a sliding path with respect to the fixed blade,
The blade edges of the fixed blade and the movable blade in this cutting blade, in the end cutting device of the band blade projecting upward from the flat band blade mounting surface of the work table parallel to the above-mentioned pulling path,
Via tilt angle adjusting means for individually adjusting the heights of two positions of the band blade mounting surface spaced apart in the direction orthogonal to the pulling path to make the tilt angle of the band blade mounting surface variable. The work table is supported by the base of the end cutting device.

In the edge cutting device of the band blade constructed as described above, the tilt angle adjusting means is not located on the same straight line of the base as in the invention according to claim 2.
Height adjusting screw shafts screwed into and out of screw holes formed at certain locations, a work table support part provided on top of these screw shafts and on which the above work table is mounted, And a tightening bolt that is screwed into another screw hole provided in the base through an insertion hole formed in the table and presses the work table against the work table support portion of the screw shaft body by its head. Can be adopted.

[0010]

According to the band edge cutting device of the present invention, the parallelism between the trailing path of the cutting blade and the band blade mounting surface of the work table is impaired by the action of the inclination angle adjusting means. Without this, the band blade mounting surface can be inclined with respect to the respective cutting edge lines of the fixed blade and the movable blade of the cutting blade. Then, when the band blade mounting surface is inclined so as to become higher at a position closer to the cutting blade, the band blade mounting surface is at an angle larger than 90 degrees with respect to the cutting edge line of the fixed blade or the movable blade. Incline. for that reason,
The band blade is placed on the band blade mounting surface in an upright position (the plate blade part of the band blade stands up from the band blade mounting surface: the position shown in FIG. 1) and the end of the band blade is cut by the cutting blade. Then, the end surface of the plate-shaped portion of the band blade is finished to be inclined so that it becomes deeper as it goes away from the blade portion as described with reference to FIGS. 10 and 11.

In the band blade end cutting device according to the second aspect of the present invention, when the screw shafts are screwed into or out of the screw holes of the base by rotating three screw shafts, the screw shafts respectively come out. The height position of the work table support at the top of the changes. Therefore, for example, if the screw shaft body near the cutting path of the cutting blade is unscrewed to project or the screw shaft body at the position far from the cutting path of the cutting blade is screwed in and retracted, The blade mounting surface is inclined so that the blade mounting surface becomes higher as the blade mounting surface approaches the drawing path. Then, when the tightening bolt is screwed in and tightened, the work table is pressed and fixed to the work table support portion of the screw shaft body. In this case, the screw shaft body is provided at three positions that are not located on the same straight line, so that the work table is fixed in a stable state.

[0012]

1 is a perspective view of an end cutting device for a band blade according to an embodiment of the present invention. Reference numeral 11 denotes a casing. A cutting mechanism 12 is installed in the casing 11, and work tables 13, 14, 15, 16 are provided at four locations around the cutting mechanism 12.

As shown in FIGS. 5 and 6, the cutting mechanism 12
Has a block 17 having a guide hole and a movable rod 18 reciprocally inserted into the guide hole of the block 17, and the movable rod 18 has a reciprocating drive mechanism (not shown) incorporated in the casing 1. ) Is driven by.

Fixed blades 21 are formed on each of four corners formed by four end surfaces 20 located on opposite sides of the block 17 and a pair of guide surfaces 19 facing each other in the guide hole. As shown in FIG. 4, the cutting edge line 21a of the fixed blade 21 has a vertical portion 21b and an inclined portion 21.
c and. Further, the shoulder portion 2 protruding in a T-shape through the narrow neck portions 22 and 22 at both ends of the movable rod 18 which is reciprocated by being guided by the guide surfaces 19 and 19.
3 and 23 are provided, and movable blades 24 and 24 are formed at both ends of the shoulders 23 and 23, respectively. As shown in FIG. 4, the cutting edge line 24a of the movable blade 24 is the vertical portion 2
4b and the inclined part 24c. Then, the cutting blade 2 is formed by the fixed blade 21 and the movable blade 24 corresponding thereto.
6 are formed. The movable rod 18 is provided with four recesses 25 formed by the neck portions 22 and the shoulder portions 23, 23.

As shown in FIGS. 3 and 4, each of the four work tables 13, 14, 15 and 16 is provided with a casing 11 of the end cutting device via individual inclination angle adjusting means 31.
It is supported by a base 11a corresponding to the upper plate. The inclination angle adjusting means 31 includes the band blade mounting surfaces 13a, 14a, 15a, 1 spaced apart in the direction orthogonal to the pulling path.
It has a function of individually adjusting the heights of the two portions of 6a and changing the inclination angles of the band blade mounting surfaces 13a, 14a, 15a, 16a.

The concrete structure of the tilt angle adjusting means 31 for the work table 13 will be described with reference to FIGS. 2 to 4. The tilt angle adjusting means 31 are provided at three positions which are not located on the same straight line of the base 11a. Screw holes 32,3 opened
The height adjusting screw shafts 35, 36, 37 (36 are not shown in the figure) screwed into and out of the shafts 3, 34.
The same shall apply hereinafter), work table support portions 38, 39, 40 provided on tops of the screw shaft bodies 35, 36, 37 and on which the work table 13 is mounted, and the work table 13
Is screwed into another screw hole 42 provided in the base 11a through an insertion hole 41 opened in the work table 13 by the head 43 of the screw shaft body 35, 36,
The work table support parts 38, 39 and 40 of the tightening bolt 37. In this example,
Screw shafts 35, 36, 37 and their work table support 3
The shaft portion and the head portion of the bolt are used for 8, 39 and 40.

On the back side of the work table 13, a recess 45,
46, 47 are provided, and when the work table 13 is mounted on the work table support parts 38, 39, 40, the work table support parts 38, 39, 40 are provided in the recesses 45, 46, 47, respectively. It is designed to fit in. Hexagonal wrench insertion hole 5 corresponding to each recess 45, 46, 47
2, 53, 54 are opened. The head 43 of the tightening bolt 44 is housed in a recess 48 provided on the surface of the work table 13. The other work tables 14, 15 and 16 have the same configuration for the tilt angle adjusting means 31 ...

The fixed blades 21 and the movable blades 24 of the cutting blades 26 have respective cutting edge lines 21a and 24a, respectively.
The 16 flat band blade mounting surfaces 13a to 16a are projected upward. Also, the draw route and the work tables 13 to 1
The flat band blade mounting surfaces 13a to 16a of 6 are set in parallel.

The band blade 1 targeted by the cutting device having the above structure is a band blade bent in a short and special shape like a Thomson blade after being bent.

Next, a case where the end portion of the band blade 1 is cut into square pieces using the above cutting device will be described.

A cutting blade for corner cutting is selected from the four cutting blades 26 ... In this embodiment, the work table 13
The cutting blade 26 corresponding to is for square cutting. The power switch 15 (not shown) is turned on to move the movable rod 18 back, and the cutting blade 26 is opened as shown in FIG. Further, the inclination of the band blade mounting surface 13a of the work table 13 is adjusted. To adjust this inclination, loosen the tightening bolt 44 and
One or more of the two screw shafts 35, 36, 37 are turned as necessary to rotate the screw holes 32, 33, 34 of the base 11a.
By screwing in or unscrewing from the screw holes 32, 33, 34.
The height position of 40 is adjusted, and the band blade mounting surface 13a of the work table 13 is tilted by a predetermined angle so that the band blade mounting surface 13a becomes higher as it approaches the above-mentioned sliding path. The inclination angle is shown by θ in FIG. Then, the work table 13 is fixed to the screw shafts 35, 3 by screwing in the tightening bolts 44 and tightening them.
The work table supports 38, 39, 40 of 6, 37 are pressed and fixed. The screw shafts 35, 36, 37 can be turned by inserting a hexagon wrench (not shown) inserted from the hexagon wrench insertion holes 52, 53, 54 into the hexagon holes of the work table support portions 38, 39, 40. .

After this, as shown by the alternate long and short dash line in FIG. 1, FIG. 6 or FIG. 24, the band blade 1 is placed on the band blade mounting surface 13a of the work table 13 in a standing state, and the block is placed. The end portion 1a of the band blade 1 superposed on the end surface 20 of 17 is projected into the recess 25 of the movable rod 18 and is abutted against the neck portion 22.

After that, when the movable rod 18 is moved forward, as shown in FIG.
As indicated by arrow A, the movable blade 24 moves along the pulling path, and the end 1a of the band blade 1 is cut into square pieces in cooperation with the fixed blade 21. The cutting pieces (cutting chips) separated from the band blade 1 by this slicing are drawn into the recess 25 by the shoulder portion 22 of the movable rod 18 without bouncing, and then fall and fall into the cutting blade tray 49 (see FIG. 1). Will be collected.

When such cutting is performed, the end face of the plate-shaped portion 7 of the band blade 1 is finished in a state of being inclined so that the end surface becomes deeper as it goes away from the blade portion, as described with reference to FIG.

In the cutting apparatus of this embodiment, the work table support portion 38 of the three screw shafts 35, 36 and 37,
By changing all the heights of 39 and 40, the heights of the band blade mounting surfaces 13a, 14a, 15a and 16a can be changed as a whole, and the band blade mounting surfaces 13 can be changed.
It is also possible to set a, 14a, 15a, 16a horizontally.

[0026]

According to the band edge cutting device of the invention of claim 1, the band blade mounting surface of the work table is fixed to the fixed blade or the blade without impairing the parallelism with the cutting path of the cutting blade. Since it is possible to incline the movable blade at an angle larger than 90 degrees with respect to the edge line of the movable blade, the end surface of the plate-shaped portion of the band blade is described with reference to FIGS. It is possible to incline so that it becomes deeper as it moves away from the blade. Therefore, the band blade whose end is finished by the band blade end cutting device according to the present invention can be used in any direction as long as the axis of the band blade to which it is butted is perpendicular to the substrate. Even if it is inclined, there is an effect that the blade edges of both band blades can be brought into contact with each other.

According to the band blade end cutting device of the invention as claimed in claim 2, the band blade mounting surface of the work table can be swiftly operated only by rotating the three screw shafts and tightening the tightening bolts. It is possible to adjust the tilt angle of the.

[Brief description of drawings]

FIG. 1 is a perspective view of an end cutting device for a band blade according to an embodiment of the present invention.

FIG. 2 is a plan view of the device.

FIG. 3 is a side view of the device.

FIG. 4 is an enlarged cross-sectional view taken along the line IV-IV of FIG.

FIG. 5 is a cross-sectional plan view of relevant parts for explaining the operation before cutting the band blade.

FIG. 6 is a cross-sectional plan view of relevant parts for explaining the operation after cutting the band blade.

FIG. 7 is an exploded perspective view of a Thomson blade type.

FIG. 8 is an explanatory diagram of a state of a band blade butting portion.

FIG. 9 is an explanatory view of another state of the band blade butting portion.

FIG. 10 is an explanatory view of still another state of the band blade butting portion.

FIG. 11 is an explanatory view of still another state of the band blade butting portion.

[Explanation of symbols]

11a base 13,14,15,16 work table 13a, 14a, 15a, 16a work table band blade mounting surface 21 fixed blade 21a fixed blade edge line 24 movable blade 24a movable blade edge line 26 cutting blade 31 inclination angle Adjusting means 32, 33, 34 Screw hole 35, 37 Screw shaft body 38, 39, 40 Work table support portion 41 Insertion hole 42 Another screw hole

Claims (2)

[Claims] 1. A cutting blade comprising a fixed blade and a movable blade that reciprocates in a sliding path relative to the fixed blade, wherein each of the cutting edge lines of the fixed blade and the movable blade in the cutting blade corresponds to the sliding path. In an end cutting device for a band blade projecting upward from a flat band blade mounting surface of a parallel work table, two positions of the band blade mounting surface are spaced apart in a direction orthogonal to the pulling path. The work table is supported by the base of the end cutting device via an inclination angle adjusting means for individually adjusting the height of the strip blade mounting surface to change the inclination angle of the band blade mounting surface. Band blade end cutting device. 2. A height adjusting screw shaft body in which the inclination angle adjusting means is screwed into and out of a screw hole formed in at least three positions which are not located on the same straight line of the base, and these screw shaft bodies. A work table support portion provided on the top of the work table and on which the work table is placed, and a work table supporting portion which is screwed into another screw hole provided on the base through an insertion hole formed in the work table and the head of the work table. 2. An end cutting device for a band blade according to claim 1, further comprising a tightening bolt that presses against the work table supporting portion of the screw shaft.