JPH06155371A - Cutter for sheet body provided with rubber - Google Patents

Abstract

PURPOSE:To provide a cutter, with which maintenance and replacement of cutting blades are facilitated, and by which no cutting chip is formed at the time of cutting a sheet body provided with rubber. CONSTITUTION:A cutter for a sheet body provided with rubber comprises a slider 5 driven in reciprocation so that the sheet body 1 provided with rubber, which is carried in a longitudinal direction, is traversed, a band-shape cutting blade body 17, the edge point of which can be renewed by folding and removing small cutting blade pieces 34 in the order from the front end, and a holding arm 15 mounted on the slider 5 in a vibration-free form, with which the cutting blade body 17 is held so that the degree of protrusion can be freely adjusted, and that the cutting blade bodies can be replaced, and by which the sheet body 1 provided with rubber is cut into fixed lengths by abutting or separating the cutting blade body 17 on or from the sheet body 1 provided with rubber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for a rubber sheet.

[0002]

2. Description of the Related Art Conventionally, in a device for cutting a rubber-attached sheet body such as a ply at a predetermined angle with respect to its longitudinal direction and sizing out to a fixed size, as shown in FIGS. The circular cutter b having a plurality of cutting blades e ... Was rotated to traverse the constant-width feed conveyor c to cut the rubber sheet body d.

[0003]

However, in such a cutter b, there is a problem that cutting scraps occur because the rubber-attached sheet body d is cut as if it were cut.

Conventionally, there has also been a device for cutting a rubber simple substance such as an inner liner by cutting it with a cutting blade heated by a heater in order to improve the cutting performance. There was a problem that it was difficult to maintain and replace the.

Therefore, the present invention solves the above problems,
An object of the present invention is to provide a cutting device in which cutting blades can be easily maintained and replaced, and cutting scraps are not generated when the rubber sheet body is cut.

[0006]

In order to achieve the above object, the present invention provides a slider reciprocally driven so as to traverse a rubber-equipped sheet body conveyed in the longitudinal direction, and a strip-shaped slider from the tip end. A cutting blade body capable of renewing the cutting edge by sequentially breaking off the small cutting blade pieces, and holding the cutting blade body so that the protrusion amount can be adjusted and exchanged, and the cutting blade body abuts and separates from the rubber-attached sheet body. A holding arm swingably attached to the slider so as to sequentially cut the rubber-attached sheet body into a predetermined length;
It is equipped with.

[0007]

[Operation] Even if the cutting edge of the cutting blade body becomes poorly cut due to wear or the like, just by breaking off the small cutting blade piece at the tip and adjusting the amount of protrusion, a cutting edge with no wear etc. can be quickly and easily formed. Can be updated.

Since the rubber-attached sheet body is cut not by cutting but by being cut by the cutting edge of the cutting blade body, no cutting chips are generated. Moreover, since it is a sheet body with rubber such as plies, it can be cut sufficiently well without heating the cutting blade body with a heater.

[0009]

The present invention will be described in detail below with reference to the drawings showing the embodiments.

FIG. 1 is a front view of an essential part showing an example of a cutting device for a rubber sheet according to the present invention, and FIG. 2 is a sectional side view of the essential part.

In FIGS. 1 and 2, reference numeral 1 denotes a sheet body with rubber such as plies, and the sheet body 1 with rubber has a conveying mechanism such as a roller conveyor (not shown) in its longitudinal direction (direction A in FIG. 2). Will be transported in.

A rectangular tubular stay 2 is arranged above the rubber-equipped sheet body 1 in parallel with the rubber-equipped sheet body 1.

Two guide rails 3 and 3 are attached to the upper surface of the stay 2, and a slider 5 having a plurality of boss members 4 is slidably attached to the guide rails 3 and 3. To be

The slider 5 is driven by a drive mechanism (not shown).
It is configured to be movable along the guide rails 3 and 3, and is reciprocally driven so as to cross over the rubber-attached sheet body 1.

As the drive mechanism, various types can be used, such as a system in which the slider 5 is reciprocally driven by a motor via a chain or the like, or a system in which the slider 5 is reciprocally driven by a cylinder or the like.

As shown in FIGS. 1, 2 and 3, a first shaft 6 and a second shaft 7 are pivotally attached to the boss members 4 so as to be rotatable about their axes.

A reciprocating drive unit 9 such as a cylinder is attached to the slider 5 via a mounting plate 8. The rod tip portion 10 of the reciprocating drive unit 9 has a protruding piece portion 12 of a connecting member 11.
, Are swingably connected via a pivot pin or the like.

The disc-shaped main body 13 of the connecting member 11 is the second
It is fixed to the shaft 7. Therefore, the reciprocating motion of the rod tip portion 10 of the reciprocating drive device 9 causes the second member to move through the connecting member 11.
The shaft 7 rotates.

A disc body 14 is fixed to one end of the second shaft 7. A holding arm 15 is attached to the first shaft 6 so that the holding arm 15 can swing around the axis of the first shaft 6 with respect to the slider 5.

The holding arm 15 includes a dogleg-shaped arm base material 16 fixed to one end of the first shaft 6 and a strip-shaped cutting blade body 17.
An arm tip member 18 and a holder member 25, and a slide body 19 connecting the arm tip member 18 and the arm base material 16.

One end of the crank arm 20 is swingably attached to the stepped end portion of the arm base member 16 via a mounting bolt 41, a sleeve, etc., and the other end of the crank arm 20 is also attached to the mounting bolt. It is swingably attached to the disk body 14 via 42, a sleeve, etc., and the holding arm 15 and the disk body 14 are interlockingly connected.

Therefore, when the rod tip portion 10 of the reciprocating drive machine 9 advances and retracts, the holding arm 15 swings via the connecting member 11, the second shaft 7, the disk body 14 and the crank arm 20,
The cutting body 17 for cutting the sheet body comes into contact with and separates from the sheet body 1 with rubber.

Further, a shallow groove 21 is formed in the stepped portion of the tip of the arm base material 16 and a long hole 22 is formed therethrough.

The base end portion of the slide body 19 is slidably fitted into the shallow groove 21, and the bolt 23 projecting from the base end portion of the slide body 19 is slidably fitted into the long hole 22. The slide body 19 is fixed to the arm base material 16 by a nut 24 so that the slide body 19 can be moved back and forth.

The slide body 19 has a mounting projection at its tip.
26, 26, and is swingably attached to the base end projection of the arm tip member 18 via a pivot pin or the like.

Further, the arm tip member 18 is a slide body 19
Through the bolt material 27, the nut material 28 and the elastic member 29,
It is connected so that the swing angle can be adjusted.

One end of the bolt member 27 is screwed to the arm tip member 18, and the other end side is screwed to the nut member 28 through the through hole of the slide body 19.

A resilient member 29 such as a coil spring is a slide member.
It is interposed between the arm 19 and the arm tip member 18, and elastically urges them in the direction of separating them.

On one end face of the arm tip member 18, a cutting blade body 17
Is held by the holder member 25 so that the amount of protrusion can be adjusted and exchanged.

The holder member 25 includes a rectangular tubular body 30 and a knob with a bolt.
31 is screwed so as to be able to advance and retreat, and by tightening the knob 31, the cutting blade body 17 is pressed and fixed to the one end surface of the arm tip member 18 by the inner surface of the rectangular tubular body 30. 32 is a nut.

Shallow cuts 33 are formed at a predetermined pitch on the surface of the cutting blade body 17, and are cut off in order from the tip to separate into small cutting blade pieces 34 (see FIG. 5) each having a cutting edge 40. It is possible.

Further, in FIG. 2, reference numeral 35 denotes a long pressing member, which extends in the width direction of the rubber sheet body 1 (direction orthogonal to the paper surface of FIG. 2) and is arranged parallel to the guide rail 3.

The pressing member 35 is attached to a rectangular column-shaped horizontal strut 36 disposed above the rubber-equipped sheet body 1 via a driving member 37 having a cylinder or the like, and is driven by the cylinder or the like.
The pressing member 35 moves up and down to come into contact with and separate from the rubber-equipped sheet body 1.

The pressing member 35 is lowered to press the rubber-equipped sheet body 1 against the long anvil 38, and it is possible to prevent the rubber-equipped sheet body 1 from rising and sagging at the time of cutting.

The anvil 38 extends in the width direction of the rubber sheet body 1 (direction orthogonal to the paper surface of FIG. 2) and is arranged parallel to the guide rail 3.

Further, as shown in FIG. 4, the anvil 38 having a substantially trapezoidal cross section is provided with a linear groove 39 having a U-shaped cross section which is opened on the upper surface side thereof and into which the tip of the cutting blade 17 can be inserted. , Presser member 35
Is formed in parallel with.

An example of the operating procedure of the cutting device constructed as described above will be described.

As shown in FIGS. 1 and 2, the pressing member 35 and the holding arm 15 are kept until the conveyed sheet body 1 passes over the anvil 38 by a predetermined length and the conveyance is stopped. The slider 5 retreats upward, and the slider 5 waits at a position where the tip end position of the cutting blade body 17 is outside the one side edge of the rubber-equipped sheet body 1.

Next, after the sheet body 1 is stopped, the pressing member 35
Moves down and presses the sheet body 1, the holding arm 15 swings downward, and the blade edge 40 at the tip of the cutting blade body 17 is inserted into the straight groove 39 of the anvil 38.

In this state, the slider 5 moves along the guide rail 3 toward the other edge of the rubber sheet body 1. Then, the cutting edge of the cutting blade 17 that moves in the straight groove 39.
The slider 40 sequentially cuts and cuts the rubber-attached sheet body 1 from the one end edge side, and when the rubber-attached sheet body 1 is completely cut off by passing through the other side end edge side, the slider 5 stops.

Then, the pressing member 35 and the holding arm 15 are retracted upward, the slider 5 is returned to the original position, and the above-mentioned procedure is repeated, so that the rubber-attached sheet body 1 is sequentially cut into a predetermined length. To be done.

At this time, if the cutting edge 40 of the cutting blade body 17 becomes poorly cut due to wear or the like, the mounting bolt 41 or the mounting bolt 42
Loosen and remove the holding arm 15 and lift it up, loosen the knob 31 and pull out the cutting blade 17 in the tip direction,
As shown in FIG. 5, the small cutting blade piece 34 at the tip can be broken and replaced with a blade tip 40 free from wear or the like.

Then, by adjusting the amount of protrusion of the cutting blade 17,
As shown in FIG. 2, the knob 31 is tightened and fixed, and the mounting bolt 41 or the mounting bolt 42 is screwed to quickly and easily.
The cutting blade body 17 can be returned to the original state and the cutting blade body 17 can be replaced in the same manner.

Regarding the cutting angle of the rubber-coated sheet body 1, for example, the cutting angle in the plane is about 40 ° to 50 ° (see FIG. 6) and the cutting angle β in the cross section is about 70 ° to 110 °.
(See FIG. 2). Further, in FIG. 1, the intersecting angle θ between the cutting blade body 17 and the rubber sheet body 1 is, for example, about
It is set to 30 ° to 50 °.

[0045]

Since the present invention is constructed as described above, it has the following great effects.

Even if the cutting edge of the cutting blade body 17 becomes poorly cut due to wear or the like, simply by breaking off the small cutting blade piece 34 at the tip and adjusting the amount of protrusion, there is no wear or the like quickly and easily. It can be replaced with a cutting edge, and the cutting blade body 17 can be easily replaced.

Since it is the sheet body 1 with rubber such as ply,
Even if you do not heat the cutting body 17 with a heater, it cuts well,
Moreover, since the cutting blade body 17 cuts like cutting at the blade edge, it is possible to prevent the generation of cutting chips.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side sectional view.

FIG. 3 is a side sectional view.

FIG. 4 is a side view of the anvil.

FIG. 5 is an explanatory diagram of a cutting blade body.

FIG. 6 is a plan view showing a conventional example.

FIG. 7 is a front view of a main part of a conventional example.

[Explanation of symbols]

 1 Sheet body with rubber 5 Slider 15 Holding arm 17 Cutting blade 34 Small cutting blade

Claims (1)

[Claims] 1. A rubber-equipped sheet body 1 conveyed in a longitudinal direction.
A slider 5 which is reciprocally driven so as to traverse the blade, a cutting blade body 17 which is strip-shaped and is capable of renewing the cutting edge by sequentially breaking the small cutting blade pieces 34 from the tip, and adjusting the protruding amount of the cutting blade body 17. It is held freely and exchangeably, and the cutting blade body 17 abuts and separates from the rubber-equipped sheet body 1 and is swingable on the slider 5 so as to sequentially cut the rubber-equipped sheet body 1 into a predetermined length. And a holding arm (15) attached to the.