JP3384495B2 - Endless belt production method and cover rubber and core body peeling machine used for carrying out the production method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an endless belt and a peeling machine for a cover rubber and a body cloth used for carrying out the production method.

[0002]

2. Description of the Related Art Conventionally, in the production of endless belts, peeling of the end portions of the belt has been carried out by spreading a belt cut to a predetermined length on the floor and covering the end portion with a cover rubber. It was done by peeling the body cloth by hand. For example, as shown in FIG. 11, an operator makes a scribing line at a portion where he / she bends down on the floor surface to peel it off, and then cuts with a knife along the scribing line to an appropriate depth to form a cover rubber having a predetermined width. Alternatively, the cover rubber and one or two or more layers of the body canvas are cut to a predetermined depth, and then the belt end portion is pryed up with an instrument such as a screwdriver in order to make a sandwiching portion at the time of peeling, as shown in FIG. The peeled portion is manually peeled off using a sandwiching means such as pliers. "

As described above, the conventional belt end peeling work relies on human power, and since it is a method of peeling depending on the experience and intuition of the worker, there are large variations in the work, and bending work and middle waist work are performed. As a result, the physical burden on the worker is large, and the work efficiency gradually decreases with the overlap of physical fatigue. The present invention has been made in view of the above problems of the prior art, and its object is to reduce the physical burden on the operator and to efficiently cover the cover rubber at both ends of the belt and the body canvas. An object of the present invention is to provide a method for producing an endless belt, which is made endless after being peeled off, and a peeling machine for a cover rubber and a body canvas used for carrying out the production method.

[0004]

In order to achieve the above object, the present invention separates a predetermined amount of cover rubber at both ends of a belt from a body canvas, and then overlaps these ends to make endless by a conventional method. In the method of producing an endless belt, the belt is fixed by a clamp arm provided at the base end of a tiltable workbench, and it is slidable parallel to the peeling direction on a lower frame connected to the workbench and is rotated in a horizontal plane. Slide the movable slide bar, pull it out by an appropriate amount and rotate it, and let the wire fed from the electric winch on the lower frame reach the work table through the end of the slide bar and attach it to the tip of the wire. After the cover rubber of the conveyor belt and the body cloth are sandwiched by the sandwiching means and the electric winch is operated to wind the wire, the cover rubber of the belt end and the body canvas are peeled off. A first invention is a method for producing an endless belt, which is characterized by dressing, and a clamp arm capable of fixing the belt is provided at a base end portion of a tiltable workbench and is connected to the workbench. A slide bar is arranged on the lower frame so as to be slidable parallel to the peeling direction and rotatable in the horizontal plane, and an electric winch is arranged on the lower frame so as to be rotatable in the horizontal plane together with the slide bar. A second invention is a peeling machine for a cover rubber and a body cloth used for carrying out a method for producing an endless belt, which is characterized in that a holding means is attached to a tip of a wire fed out from.

[0005]

The main components of the peeling machine used in the peeling step of the method for producing an endless belt according to the present invention are the tiltable work table, the clamp arm, the slide bar, the electric winch, and the holding means, and the action of each element. The explanation is as follows. (1) Tiltable work table In a place where a belt end to be peeled is placed and peeling work is performed, the worktable can be tilted arbitrarily according to the height of the worker's back. (2) The clamp arm is attached to the workbench and fixes the belt end to be peeled off. (3) Slide bar This is a jig for smooth peeling. By rotating it in the proper direction and pulling it out by a proper amount, the cover rubber and the body cloth can be peeled efficiently and cleanly. (4) Electric winch and gripping means The gripping means at the tip of the wire fed from the electric winch clamps the cover rubber at the end of the belt and the core canvas, and the electric winch winds the wire to separate the cover rubber and the core canvas. . After a predetermined amount of the cover rubber on both ends of the belt and the core body cloth are peeled off by the peeling machine having such a configuration, these both ends are overlapped and endlessized by a conventional method to produce an endless belt.

[0006]

EXAMPLES Examples of the present invention will be described below. FIG. 1 is a side view of a peeling machine used in a peeling step of a method for producing an endless belt according to the present invention, FIG. 2 is a plan view thereof, and FIG.
Is a perspective view thereof. In FIGS. 1 to 3, 1 is a work table for performing a peeling work, and the work table 1 is connected to the vertical frame 2 so as to be tiltable in the arrow A direction. A wire 4 drawn from a manual winch 3 directly connected to the vertical frame 2 has a C hook 5 at its tip. Reference numeral 6 is an operation lever of the manual winch 3. One end of a support arm 7 is fixed to the lower surface side of the workbench 1, and the other end of the support arm 7 is rotatably supported (9) by a lower frame 8 fixed to the vertical frame 2. The member 10 protruding from the back side of the support arm 7 and the C hook 5 are connected by a wire 11. Therefore, the workbench 1 can be freely tilted in the direction of arrow A by operating the lever 6 to feed the wire 4 out of the manual winch 3 or winding the wire to adjust the length of the wire 4.

Reference numeral 12 denotes a clamp arm for clamping the belt, which can freely rotate around a point B and clamp the belt at a position C.

A base 13 is attached to the lower frame 8 so as to be rotatable in a horizontal plane, and two short members 14 having a gate-shaped cross section are separately welded to the base 13 and an electric winch 15 is attached thereto. It is attached. Further, the two slide bars 1 forming the long sides of the rectangular sliding member 16
7 is guided by the member 14 and is slidably arranged in the direction of arrow D (parallel to the peeling direction). Two wheels 18 are attached between the base end side of the lower frame 8 and the floor surface, and three wheels 18 are attached between the other end side of the lower frame 8 and the floor surface.
Two wheels 19 rotatable by 60 ° are attached, and one wheel 20 rotatable by 360 ° is attached between the anti-electric winch side of the sliding member 16 and the floor surface. By freely rotating this wheel 20 by 360 °, the slide bar 17 rotates in the horizontal plane together with the electric winch 15 around the point E (where the base 13 is rotatably attached to the lower frame 8 in the horizontal plane). It is possible (direction of arrow F).

The wire 21 unwound from the electric winch 15 passes through the roll 22 attached to the tip of the sliding member 16, and then the roll 2 attached to the tip of the workbench 1.
It reaches the work table 1 via 3 and is connected to a sandwiching means such as pliers 25 on the work table 1.

Next, regarding the peeling work of the cover rubber of the belt end portion and the core body cloth by the peeling machine of the present invention having the above-mentioned structure, the case where the upper surface side is peeled by taking the belt composed of three layers of core body cloth as an example. Will be described in the order of work steps. Before the peeling work, slide the slide bar 17 by an amount suitable for the belt to pull it outward, and further rotate it in the proper direction so that the cover rubber and the body cloth can be peeled more smoothly. You can

(1) Marking of peeling portion (see FIG. 4) As shown in FIG. 4, the end portion of the belt 24 made of three-layer body cloth is placed on the workbench 1 and fixed by the clamp arm 12. , Apply a marking line to the area to be peeled off. The workbench 1 can be tilted at any angle according to the height of the worker by operating the lever 6 as described above.

(2) Incision Make an appropriate amount of incision along the marking line. In the case of the present embodiment, a notch having a depth corresponding to the thickness of the cover rubber having a predetermined width, a notch having a depth corresponding to the thickness of the cover rubber having a predetermined width and one layer of the body canvas, and the cover having a predetermined width. A notch with a depth corresponding to the thickness of two layers of rubber and body canvas is required.

(3) Manufacture of the sandwiching portion (see FIGS. 5 and 6) As shown in FIGS. 5 and 6, an end of the top cover rubber is cut to make a sandwiching portion by sandwiching means such as pliers. Peel off the part a little.

(4) Peeling off cover rubber The end portion of the top cover rubber that has been slightly peeled off is held by a holding means such as pliers, and the electric winch 15 is operated to gradually wind the wire 21 and peel off the cover rubber. .

(5) Peeling off cover rubber and one layer of body cloth (see FIG. 7) A sandwiching portion was prepared in the same manner as described above, and as shown in FIG. It is sandwiched by pliers 25 and the electric winch 15 is operated to gradually wind up the wire 21 and peel off the cover rubber and one layer of the body cloth.

(6) Peeling off cover rubber and two layers of body cloth (see FIG. 8) A sandwiching portion was prepared by the same method as described above, and as shown in FIG. It is sandwiched by pliers 25, and the cover rubber and the two layers of the body canvas are peeled off by the same method.

As a result of the above-mentioned work, the peeling of the upper surface cover rubber, the upper surface cover rubber and the one-layer body cloth, and the two layers of the upper surface cover rubber and the two body cloth are completed. By the same method, the lower surface cover rubber, the lower surface cover rubber and one layer of the core body cloth, and the lower surface cover rubber and the two layers of the core body cloth can be peeled off. As a result, an end-shaped belt having a cross section as shown in FIG. 10 can be obtained. FIG. 9 is a plan view of the end portion of the belt. In FIGS. 9 and 10, 26 is a top cover rubber, 27
Is a lower cover rubber, and 28, 29 and 30 are body cloths. As is apparent from FIG. 9, in this case, the end faces of the cover rubber and the body canvas are formed obliquely.

To make the belt endless by peeling the end portions in this manner, a known adhesive is applied to both end portions of the belt,
For example, it can be performed by thermocompression bonding with a joint press. Although the present invention can be applied to a belt having a single layer of the core fabric, when the core fabric is applied to a multilayer belt having two or more layers, the peeling can be performed more efficiently.

[0019]

As described above, the present invention is a mechanical method skillfully combining a tiltable work table, a clamp arm for fixing a belt, an electric winch, and a slidable and rotatable slide bar. Since the cover rubber and the body canvas can be peeled off, the physical burden on the operator is small, and the work efficiency does not decrease even if the peeling work takes a long time,
The productivity of the endless belt can be remarkably improved as compared with the case where it is performed manually.

[Brief description of drawings]

FIG. 1 is a side view of a peeling machine of the present invention.

FIG. 2 is a plan view of the peeling machine of the present invention.

FIG. 3 is a perspective view of the peeling machine of the present invention.

FIG. 4 is a diagram illustrating a state where a marking line is inserted on the workbench of the peeling machine of the present invention.

FIG. 5 is a diagram illustrating a state in which a holding portion of a holding means is formed on a workbench of the peeling machine of the present invention.

FIG. 6 is a diagram illustrating a state in which a sandwiching portion of the sandwiching means is formed on the work table of the peeling machine of the present invention.

FIG. 7 is a diagram illustrating a state of peeling by the peeling machine of the present invention.

FIG. 8 is a view for explaining a state of holding by a holding means on the workbench of the peeling machine of the present invention.

FIG. 9 is a plan view of the belt with the end portions peeled off.

FIG. 10 is a cross-sectional view taken along the line XX of FIG. 9, showing a cross section of the belt with the end portions peeled off.

FIG. 11 is a diagram illustrating a state where a marking line is inserted when peeling by a conventional method.

FIG. 12 is a diagram illustrating a conventional peeling method.

[Explanation of symbols]

1 ... Workbench 8 ... Lower frame 12 ... Clamp arm 15 ... Electric winch 17 ... Slide bar 21 ... Wire

Continuation of the front page (56) References JP-A-63-218417 (JP, A) JP-A-57-69139 (JP, A) Actual development 57-81124 (JP, U) (58) Fields investigated (Int .Cl. ⁷ , DB name) B65G 15/30 B29D 29/00

Claims (2)

(57) [Claims] 1. A method of producing an endless belt by peeling off a predetermined amount of cover rubber on both ends of a belt and a core canvas, and then endlessly producing the endless belt by a conventional method. Secure the belt with the clamp arm provided at the end, slide the slide bar that is slidable parallel to the peeling direction and rotatable in the horizontal plane on the lower frame connected to the workbench, and slide the appropriate amount outward. Pull it out and rotate it so that the wire fed from the electric winch on the lower frame reaches the workbench via the end of the slide bar, and the cover rubber of the conveyor belt and the body cloth are clamped by the clamping means attached to the tip of the wire. The endless belt is characterized in that after operating the electric winch to wind up the wire and peeling off the cover rubber at the end of the belt and the body canvas, the endless belt is made. Production method. 2. A clamp arm capable of fixing a belt is provided at a base end portion of a tiltable work table, and is slidable in parallel to a peeling direction on a lower frame connected to the work table and in a horizontal plane. It is characterized in that a slide bar is rotatably arranged, an electric winch is arranged on the lower frame so as to be rotatable together with the slide bar in a horizontal plane, and a pinching means is attached to a tip of a wire fed from the electric winch. A peeling machine for cover rubber and body canvas used to carry out the production method of endless belts.