JPH11114263A - Sewing apparatus and sewing method for canvas with rubber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make sewing of a canvas with a rubber with a large rubber wt. ratio by means of a sewing machine possible and to improve its productivity. SOLUTION: This sewing apparatus for a canvas with a rubber is provided with a sewing stand on which the canvas with a rubber is placed, a canvas fixing means for holding edge ends of the canvas with a rubber together under a condition where they are evened up, a overlock machine 12 supported on a machine supporting stand and a running rail for making the machine supporting stand run. The overlock machine 12 is provided with a water supplying means 62 consisting of an upper water supply hose 39 and a lower water supply hose 40 for supplying water to a part to be sewn and an air ejecting mechanism 43 for ejecting air to odds and ends 147 of the canvas with a rubber cut by means of a knife 42 and discharging the odds and ends 147 through a guiding tray 46. A synchronous belt 47 for preventing the canvas 61 with a rubber from being hung down from the sewing stand is provided along the running direction of the overlock machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing apparatus and a sewing method for a rubberized canvas, and more particularly to a rubberized canvas forming a canvas layer provided on the inner surface or the back surface of various belts such as a transmission belt and a conveyor belt. The present invention relates to a suturing device and a suturing method.

[0002]

2. Description of the Related Art Conventionally, a belt having a canvas layer formed on the inner surface or the back surface of the belt has been used as a transmission belt or a transport belt. As such a belt, for example, there is a V-ribbed belt as shown in FIG. In the V-ribbed belt, canvas d is bonded to the back surface of an adhesive rubber c in which a core wire b is embedded, and a plurality of V-shaped ridges e extending in the belt length direction are arranged on the inner peripheral side of the adhesive rubber c. Is a belt provided with a ribbed rubber layer f. The canvas d is composed of a bias cloth in which the warp and the weft are inclined at an angle of 45 degrees with respect to the belt length direction.

[0003] This type of belt is disclosed, for example, in JP-A-8-3
As disclosed in JP-A-35528, it is manufactured as follows.

First, as shown in FIG. 23, an adhesive rubber sheet g made of an unvulcanized rubber sheet is pressed against a canvas d to form a canvas h with rubber. Then, the rubber-attached cloth h is cut at predetermined angles at an angle of 45 degrees with respect to the belt length direction to form a plurality of cut cloths i. Thereafter, as shown in FIG. 24, by joining the side edges (the edges that are not cut) of the cut cloth i, the warp and the weft are inclined at an angle of 45 degrees with respect to the belt length direction. A long article j of the canvas with rubber is obtained. Then, the long object j is cut into a predetermined length, and the cut edges are joined together to form a tubular body of the canvas with rubber.

Next, as shown in FIG. 25, a tubular body of the canvas with rubber is externally fitted to a cylindrical forming drum k. On this occasion,
The canvas d faces the forming drum k. Then, wrap the cord b spirally over the canvas with rubber, and further,
An adhesive rubber sheet and a rib rubber sheet made of an unvulcanized rubber sheet are sequentially wound. After that, the cylindrical sleeve 1 provided with the concave and convex portions on the inner peripheral surface is externally fitted to the forming drum k such that the concave and convex portions come into contact with the rib rubber sheet, and then vulcanization molding is performed.

[0006] Then, the cylindrical vulcanized molded body is released from the mold, the V-groove is ground in the circumferential direction, and the width is cut to a predetermined width.
A V-ribbed belt as shown in FIG. 22 is obtained.

[0007] In the above manufacturing process, the edges of the canvas with rubber are joined by butt stitching in which the edges are stitched together using sewing threads. FIG.
As shown in FIG. 2, according to the butt stitching, no step is formed at the joint between the canvas h and the adhesive rubber sheet g.

As described above, by eliminating the step at the joint portion, for example, when the V-ribbed belt is used as a power transmission belt, the running of the belt becomes smooth, and the occurrence of abnormal vibration and abnormal noise is prevented. be able to.

Such a butt stitch is performed using, for example, an overlock sewing machine. In this case, first
Both ends (sewed portions) of the canvas with the rubber to be sewn are overlapped, and the both ends are moved to the needle tip of the sewing machine. Then, while operating the sewing machine, the canvas is sequentially fed into the sewing machine while the hands are attached to both ends of the canvas. In this way, the both ends are sequentially sewn.

[0010]

Various types of canvas with rubber are used depending on the type of belt used. Generally, a toothed belt canvas having a relatively small ratio of unvulcanized rubber weight to canvas weight (hereinafter referred to as rubber weight ratio) is used. On the other hand, a canvas having a relatively large rubber weight ratio is used as the canvas for the V-ribbed belt. For example, a toothed belt canvas having a rubber weight ratio of 0.2 to 1 is used. On the other hand, as the canvas for the V-ribbed belt, one having a rubber weight ratio of 1 to 5 is used.

Butt stitching can be relatively easily performed on a rubberized canvas having a relatively small rubber weight ratio. However, in the case of a canvas with rubber having a large rubber weight ratio, there are the following problems with butt stitching.

First, the canvas with rubber having a large rubber weight ratio was weak in waist and easily deformed. For this reason, in the conventional suturing method, when the canvas with the rubber is sent to the sewing machine, the canvas with the rubber is easily deformed due to the movement, and the workability at the time of manufacturing is poor.

In addition, when sewing with a sewing machine, the resistance of the canvas with rubber is large, so that the sewing needle that passes through the canvas with rubber is not smoothly moved, the sewing needle is broken, or the sewing thread is melted due to heat generated during sewing. There was something to do.

Further, since the surface has a high adhesiveness, the cut cloths sometimes adhere to each other when the cut cloths are overlapped. In addition, when the tubular bodies are sewed in a tubular shape with the adhesive surface facing outward, when the tubular bodies are stacked and stored, they may adhere. for that reason,
Careful attention was required for storage, and management was difficult.

Due to such a problem, the productivity of the canvas with rubber having a large rubber weight ratio is significantly lower than that of the canvas with rubber having a small rubber weight ratio. Therefore, in consideration of productivity, it was difficult to sew a rubber canvas having a large rubber weight ratio with a sewing machine.

The present invention has been made in view of the above circumstances, and an object of the present invention is to enable sewing with a sewing machine to a rubberized canvas having a large rubber weight ratio, such as a canvas for a V-ribbed belt. An object of the present invention is to improve the productivity of a suture of a canvas with rubber.

[0017]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method of fixing a canvas with rubber on a suture table and performing sewing while running the sewing machine, after adding various measures. And

More specifically, the invention according to claim 1 is an apparatus for sewing a canvas with rubber for sewing a canvas with rubber comprising a canvas and an unvulcanized rubber. Holding means for holding the rubberized canvas on the suturing table so that the sewn portions of the rubberized canvas are overlapped with each other; and a sewn portion of the rubberized canvas held by the holding means. A sewing machine to be sewn with a sewing thread, and running means for running the sewing machine in a direction along a portion to be sewn of the canvas with rubber when sewing the canvas with rubber are provided.

According to the above-mentioned specific features of the invention, the canvas with rubber placed on the suturing table is positioned and fixed by the holding means in a state where the sewn portions overlap each other. Then, the traveling means causes the sewing machine to travel in the direction along the stitched portion, so that the sewing machine performs the suturing operation while moving. As a result, even in the case of a canvas with rubber having a large rubber weight ratio, the sewn portion is stably sewn.

According to a second aspect of the present invention, in the suturing apparatus for a rubberized canvas according to the first aspect, the holding means presses and fixes the rubberized canvas placed on the sewing table to the sewing table. It is provided with a holding plate and a lifting means for raising and lowering the holding plate.

According to the above invention specifying matter, when suturing,
When the lifting means lowers the pressing plate, the pressing plate presses the rubberized canvas against the suture table. As a result, the canvas with rubber is sandwiched and held between the holding plate and the suturing table. On the other hand, when the suturing is completed, the lifting means raises the holding plate, so that the holding of the canvas with rubber is released. As a result, the sewn portion of the rubberized canvas is easily pulled out. Therefore, the holding of the canvas with rubber and the release of the holding state are easily performed.

According to a third aspect of the present invention, in the sewing apparatus of the first aspect of the present invention, the running means includes a controller for adjusting the running speed of the sewing machine in accordance with the rotation speed of the sewing machine. It was decided that.

According to the above-mentioned invention specifying matter, the variation of the sewing pitch is reduced. Also, since no extra force is applied to the sewing needle during sewing, the sewing needle is less likely to be damaged.

According to a fourth aspect of the present invention, there is provided the sewing apparatus for a rubberized canvas according to the first aspect, further comprising cooling means for supplying a coolant to a portion to be sewn of the rubberized canvas. is there.

According to the above-mentioned invention specific matter, a coolant is supplied to the sewn portion by the cooling means, and the coolant cools the sewn portion and suppresses a rise in temperature. Therefore, melting and cutting of the suture by heat are prevented.

According to a fifth aspect of the present invention, in the suturing apparatus for a rubberized canvas according to the fourth aspect, the cooling means is constituted by a water supply means for dropping or spraying water on the sewn portion. It was done.

According to the above-mentioned specific features of the invention, water is dropped or sprayed on the sewn portion by the water supply means, and this water suppresses a rise in the temperature of the sewn portion. Further, the water supplied by the water supply means suppresses the adhesion of the sewn portion and makes the cutting with the scalpel good. In addition, the resistance of the sewing needle to the canvas with rubber is reduced, stitching is stabilized, and breakage of the sewing needle is less likely to occur.

According to a sixth aspect of the present invention, in the sewing apparatus of the first aspect of the present invention, the sewing machine cuts an edge of a sewn portion of the rubberized canvas and aligns the edges of the sewn portion. While it is composed of a sewing machine with a scalpel provided with a scalpel,
An outlet passage for guiding the cut end of the sutured portion, and gas injection means for injecting gas into the cut end and guiding the cut end to the outlet passage by the pressure of the gas are provided.

According to the above-mentioned specific features of the invention, the scraps of the rubberized canvas are guided to the outlet passage by the gas pressure, and are discharged through the outlet passage. For this reason, it is reliably prevented that the cut ends are entangled and hinder the sewing of the sewing machine.

According to a seventh aspect of the present invention, in the apparatus for sewing a rubberized canvas according to the first aspect, the sewing machine is configured to sew a sewn portion of the rubberized canvas with an upper thread and a lower thread. The upper thread and the lower thread have different colors.

According to the above-mentioned invention specific matter, it is easy to distinguish between the upper thread and the lower thread, and the possibility of erroneous use of the sewing thread is significantly reduced. If there is an erroneous use, the error is easily found.

According to an eighth aspect of the present invention, there is provided the sewing apparatus for a canvas with rubber according to the first aspect, wherein a plasticizer for rubber is attached to the sewing thread.

According to the above-mentioned specific features of the present invention, the sewing thread can easily slip on the canvas with rubber. For this reason, the suture is less likely to break during suturing, and the suturing reliability is improved.

According to a ninth aspect of the present invention, in the suturing apparatus for a rubberized canvas according to the first aspect, the suturing table is configured such that a sewn portion of the rubberized canvas projects from one side of the suturing table. On the other hand, between the one side of the suturing table and the sewing machine, a sag preventing belt for supporting the protrusion of the canvas with rubber from the suturing table is provided along the one side. It was decided that.

According to the above-mentioned invention specific matter, since the belt for preventing sagging supports the tip of the canvas with rubber, the sagging of the canvas with rubber is prevented. Therefore, the sewn portion of the rubberized canvas is maintained at an appropriate position, and the sewing operation of the sewing machine is performed favorably.

According to a tenth aspect of the present invention, in the suturing apparatus for a rubberized canvas according to the first aspect, there is provided a light projector for projecting a linear light beam indicating an installation position of a portion to be sewn on the rubberized canvas. It was decided that.

According to the above-mentioned specific features of the invention, the position of the sewn portion of the rubberized canvas is quickly and easily adjusted by adjusting the sewn portion of the rubberized canvas to the linear light beam.

According to an eleventh aspect of the present invention, in the suturing apparatus for a rubberized canvas according to the first aspect, the suturing table is arranged such that a sewn portion of the rubberized canvas projects from one side of the suturing table. On the other hand, one side of the suturing table is freely changeable so as to form a predetermined angle within a range of 45 ° to 90 ° with respect to the longitudinal direction of the suturing table. A sewing machine support to be supported, a running rail on which the sewing machine support is movably mounted, and running direction changing means for positioning the running rail in a direction along one side of the suture base according to the predetermined angle. And that it is provided.

According to the above-mentioned specific features of the invention, the angle formed by one side of the suturing table with respect to the longitudinal direction is changed in accordance with the sewn portion of the rubberized canvas when the bias-cut rubberized canvas is sewn. In addition, the direction of the running rail is adjusted by the running direction changing means in accordance with one side of the suture table.
As a result, the sewing machine travels along the inclined surface of the biased rubberized canvas, and the rubberized canvas is sewn on the inclined surface.

According to a twelfth aspect of the present invention, in the suturing apparatus for a rubberized canvas according to the first aspect, the sewing table is provided between the superposed rubberized canvases to separate the two rubberized canvases. An anti-adhesion plate is provided.

According to the above-mentioned specific features of the invention, since the adhesion preventing plate separates both the rubberized canvases, the adhesion of the rubberized canvases at the time of sewing is reliably prevented.

According to a thirteenth aspect of the present invention, in the suturing apparatus for a rubberized canvas according to the first aspect, the rubberized canvas placed on the suturing table is folded into two to form a cylinder. At the time of suturing, an indicating plate indicating a position １ ／ of the outer circumference of the cylinder from the sewn portion is slidably provided in the longitudinal direction of the suturing table, and a scale for adjusting the position of the indicating plate is The suturing table is provided in the longitudinal direction.

According to the above-mentioned invention specific matter, when the canvas with rubber is folded, the indicating board is moved to a predetermined position in accordance with the scale of the scale. By adjusting the folded portion of the canvas with rubber in accordance with the indication plate, the outer peripheral length of the cylinder of the canvas with rubber is accurately determined, and the accuracy of the cylindrical sewing is improved.

According to a fourteenth aspect of the present invention, in the suturing apparatus for a rubberized canvas according to the eleventh aspect, an original fabric of the rubberized canvas is attached, and an elongated material with rubber is sent out from the original fabric. An anti-supply roller and the above-mentioned long object are moved from the longitudinal direction by 4 mm.
Supply side cutter means for cutting at a predetermined angle within a range of 5 ° to 90 ° to produce a cut cloth of rubberized canvas to be supplied to the sewing table, and a plurality of the cut cloths are sequentially sewn by the sewing machine. The sewn body of the canvas with rubber was collected from the suture table, and once wound up in a roll shape, was taken up by the take-up roller and sent out from the take-up roller, and was placed on the suture table. Winding-side cutter means for cutting the sewn body at right angles to the longitudinal direction and producing a strip-shaped rubberized canvas of a predetermined length to be sewn into a tubular shape by the sewing machine.

According to the above-mentioned invention specifying matter, a long object with a rubberized canvas is sent out from the raw material attached to the raw material supply roller. The long object is cut by the supply-side cutter means at a predetermined angle within a range of 45 ° to 90 ° from the longitudinal direction. The cut cloth cut at a predetermined angle is sewn by a sewing machine to form a sewn body of a canvas with rubber. This suture body is once taken up by a take-up roller. Then, the sewn body wound by the winding roller is sent out to a suturing table, and is cut into a predetermined length by a winding-side cutter means, thereby forming a belt-shaped canvas with rubber. The belt-shaped canvas with rubber cut to a predetermined length is sewn by the sewing machine to form a tubular body of the canvas with rubber. In this way, a plurality of steps are continuously performed by a single device.

According to a fifteenth aspect of the present invention, in the method for sewing a rubberized canvas for sewing a rubberized canvas comprising a canvas and an unvulcanized rubber, the rubberized canvas is placed on a sewing table, and then the rubberized canvas is put on the sewing table. The sewn portions of the canvas are held in an overlapped state, and then the sewing machine is operated while running in a direction along the sewn portions to sew the sewn portions.

According to the above-mentioned specific features of the invention, the canvas with the rubber placed on the suturing table is held in a state where the sewn portions are overlapped. Then, the sewing is performed while the sewing machine travels in a direction along the sutured portion. As a result, even when the rubber canvas has a large rubber weight ratio, the sewn portion is stably sewn.

According to a sixteenth aspect of the present invention, in the method for suturing a rubberized canvas according to the fifteenth aspect, before mounting the rubberized canvas on a sewing table, a film material is attached to the adhesive surface of the rubberized canvas. It is to be adhered.

According to the above-mentioned invention specifying matter, even if a plurality of rubberized canvases are stored in an overlapping state, they do not adhere. Also, since the waist of the canvas with rubber is strengthened,
It becomes easy to handle. Further, adhesion of foreign matter to the rubberized canvas is prevented.

According to a seventeenth aspect of the present invention, there is provided a method of sewing a rubberized canvas for sewing a rubberized canvas made of a canvas and an unvulcanized rubber, comprising the steps of: Sending out, and thereafter, cutting the long object at a predetermined angle within a range of 45 ° to 90 ° from the longitudinal direction to generate a cut cloth of the canvas with rubber, and thereafter, a non-cut surface of the cut cloth. Sew together while running the sewing machine,
A step of generating a sewn body of a canvas with rubber in which a plurality of cut cloths are sequentially sewn; a step of winding the sewn body around a take-up roller to collect it; and thereafter, rotating the take-up roller in a reverse direction. Sending the suture body, cutting the suture body to a predetermined length to produce a belt-shaped rubberized canvas,
Thereafter, the cut surfaces of the strip-shaped rubberized canvas are sewn while running the sewing machine to generate a tubular body of the rubberized canvas.

According to the above-mentioned specific features of the invention, a tubular body of a biased rubberized canvas is continuously manufactured from a raw material of a rubberized canvas having a large rubber weight ratio.

According to an eighteenth aspect of the present invention, in the method for sewing a rubberized canvas according to any one of the fifteenth and seventeenth aspects, a coolant is supplied to a sewn portion of the rubberized canvas during sewing of the sewing machine. It is decided to do.

According to the above-mentioned invention specific matter, the coolant cools the sewn portion and suppresses the temperature rise. Therefore, melting and cutting of the suture by heat are prevented.

According to a nineteenth aspect of the present invention, in the method for suturing a canvas with rubber according to the eighteenth aspect, water is supplied as a cooling agent.

According to the above-mentioned invention specific matter, since the supplied water cools the sewn portion, a rise in the temperature of the sewn portion is suppressed. In addition, since the sewn portion becomes slippery due to the water, adhesion of the sewn portion is suppressed, and cutting with a scalpel is improved. In addition, the resistance of the sewing needle to the canvas with rubber is reduced, so that the sewing is stabilized and the sewing needle is hardly damaged.

[0056]

Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

-Structure of the suturing device 1- First, the structure of the suturing device 1 according to the first embodiment will be described.

As shown in FIGS. 1 to 3, the suturing device 1
A suturing means 2 for butt-stitching the edges of a canvas 61 with rubber (not shown in FIG. 3), a sewing table 3 on which the canvas 61 with rubber is placed, and a canvas 61 with rubber placed on the sewing table 3 And a canvas fixing means 55 (not shown in FIG. 3) as a holding means for holding

The suturing means 2 is provided in the sewing direction (X direction in the figure).
An overlock sewing machine 12 is fixed on a traveling body 11 traveling on two parallel rails 13 arranged in a straight line. The traveling body 11 and the parallel rails 13 constitute traveling means for traveling the overlock sewing machine 12 in a direction along the edge of the sewn portion of the canvas 61 with rubber. The parallel rail 13 is provided on a rail base 15. The rail mount 15 is fixed on a base mount 14 serving as a common mount for the suturing table 3 and the suturing means 2.

At the four corners at the bottom of the traveling body 11, blocks 16 each having an inverted concave cross section are attached so as to straddle on the parallel rails 13. As shown in FIG. 2, the traveling body 11 is connected to a traveling synchro belt 17. Synchro belt for traveling
Reference numeral 17 denotes a gear motor 18 attached to the end point side of the rail stand 15 in the sewing direction (the left side in FIG. 2; hereinafter, referred to as “end point side in the sewing direction”), and a start point side in the sewing direction (FIG.
(Hereinafter referred to as “the starting point side in the sewing direction”) is interposed between the driven pulley 19 and the driven pulley 19. That is, the traveling synchro belt 17 travels in accordance with the rotation of the gear motor 18, and as a result, the traveling body 11 travels on the parallel rail 13.

As shown in FIG. 4, on the upper part of the traveling body 11,
A detachable sewing machine support 32 is attached along the longitudinal direction (the Y direction shown in FIG. 3) of the suturing table 3. The sewing machine support base 32 is configured such that a flat upper plate 32a and a lower plate 33 are connected to a columnar member 34, and the two plates 32, 32a are vertically stacked at a predetermined interval. Both ends of the upper plate 32a
It is slidably fitted into a U-shaped U-shaped member 38 toward the inside of the traveling body 11. Upper plate of sewing machine support 32
32a is fastened to the traveling body 11 by one lock pin 37. Therefore, the sewing machine support 32 can be easily attached to and detached from the traveling body 11 by attaching and detaching the lock pin 37. Therefore, the sewing machine support
The overlock sewing machine 12 attached to the 32 is configured to be adjusted or repaired by a quick and simple operation.

As shown in FIG. 5, the overlock sewing machine 12 fixed to the upper plate 32a of the sewing machine support 32 uses the sewing needle 25 and loopers 26 and 27 to sew the upper thread 29 and the lower thread 30 on the sewing machine. It is of a general type that is sewn on. The sewing needle 25 and the loopers 26 and 27 are provided so as to protrude toward the suturing table 3.

Here, the configuration of the overlock sewing machine 12 will be described. As shown in FIG. 4, a pressing mechanism 21 protruding toward the end point in the sewing direction is provided above the overlock sewing machine 12. The pressing mechanism 21 presses the sewn portion of the canvas 61 with rubber so that the sewn portion does not float up from the suturing table 3. The holding mechanism 21 is provided with a holding part 23 at the tip end of an arm 22 that extends horizontally from the upper part of the overlock sewing machine 12 toward the end point in the sewing direction.
Are pin-connected. The holding portion 23 is composed of an arm 23a which is vertically connected to the arm 22 so as to be vertically movable and extends in a substantially vertical direction, and an arm 23b which is pin-connected to the arm 23a. The arms 23a and 23b are bent around the pin as a fulcrum. It is freely configured. At the end of the arm 23b, there is provided a pressing roller 24 rotatably supported in the sewing direction. A spring member (not shown) for applying a biasing force in a direction to increase the opening angle of the arms 23a and 23b is provided at a joint between the arm 23a and the arm 23b. The roller 24 is biased downward.

As shown in FIGS. 5A to 5C, the overlock sewing machine 12 includes a sewing needle which constitutes the suturing mechanism 20.
25, an upper looper 26, a lower looper 27, a needle plate 28, and a knife 42 (not shown in FIG. 5). The suturing mechanism 20 allows an upper wheel 141 formed by the upper thread 29 inserted through the sewing needle 25 and a lower wheel 142 formed by the lower thread 30 inserted through the lower looper 27 to be inserted into each other, and the upper thread 29 and the lower thread The edges (the parts to be sewn) of the canvas 61 with rubber are sewn so that the thread 30 and the thread 30 are staggered alternately. That is, the suturing mechanism 20 is configured to perform so-called overlock stitching of the sewn portion of the canvas 61 with rubber.

The upper thread 29 and the lower thread 30 are both 66 nylon sewing threads, and the upper thread 29 is a 70 denier sewing thread and the lower thread 30 is a 50 denier sewing thread. To prevent misuse of the upper thread 29 and the lower thread 30, the upper thread 29 is colored black and the lower thread 30 is colored red. That is, the upper thread 29 and the lower thread 30 are sewing threads having different colors from each other. The upper thread 29 is attached to the canvas 61 with rubber.
The reason why the black color is used is to make the sewing thread inconspicuous when the rubberized canvas 61 is used as a part of a belt product.

Further, a plasticizer for rubber is attached to the upper yarn 29 and the lower yarn 30 in order to improve the slip of the yarn and improve the affinity for rubber. In this embodiment, DOA (dioctyl adipate) is attached to the upper thread 29 and the lower thread 30.

As shown in FIG. 4, the scalpel 42 is
Are provided on the end point side in the sewing direction. This female 42 is
By moving in the sewing direction as the traveling body 11 travels, the edge portions of the overlapped rubberized canvas 61 are cut continuously, and both ends are precisely aligned.

The sewing needle 25, the upper looper 26 and the lower looper 27
Is driven by a sewing machine motor 31 provided below the overlock sewing machine 12. The sewing machine motor 31 has a lower plate
It is mounted on a transmission 33, and is configured to transmit a driving force to the overlock sewing machine 12 through a transmission belt.

The sewing machine motor 31 and the gear motor 18 are
As shown in FIG. 1, it is connected to a controller 36 attached to the lower part of the suture table 3. The controller 36 includes an inverter 63, and controls the traveling speed of the traveling body 11 by the gear motor 18 so as to correspond to the biting speed of the upper and lower feed teeth of the sewing machine with rubber corresponding to the rotation speed of the sewing machine motor 31. That is, the controller 36 synchronizes the gear motor 18 and the sewing machine motor 31 such that the sewing pitch becomes a predetermined set value.

As shown in FIG. 4, above the pressing roller 24 of the pressing mechanism 21, an upper water supply hose 39 having a water supply port 39a opening downward is provided. A lower water supply hose 40 is provided below the pressing roller 24, and a water supply port 40 a of the lower water supply hose 40 is provided upward at a position substantially opposed to the water supply port 39 a of the upper water supply hose 39. The two water supply hoses 39, 40 are connected to a water tank (not shown) via a tube pump (not shown), so that water is supplied from both water supply ports 39a, 40a to the canvas 61 with rubber by the tube pump. It has become. That is, the upper water supply hose 39 and the lower water supply hose 40 are configured to drop or spray water from above and below the sewn portion before the sewing operation of the sewing needle 25. The upper water supply hose 39 and the lower water supply hose 40 constitute a water supply means 62 which is a cooling means for cooling the sewn portion.

Below the pressing mechanism 21, a sewing machine support 32
There is provided a water supply tray 41 placed on the tray. The water supply tray 41 includes a side wall 41a having a height substantially equal to the distance between the sewing machine support base 32 and the needle plate 28, and a drain port (not shown), and the water supplied from both the water supply hoses 39 and 40 is provided. Is prevented by the side wall 41a, and the water is collected and discharged from the drain port.

The overlock sewing machine 12 has an air injection mechanism 43 as a gas injection means, a discharge tray 46 as a discharge passage, and a discharge means for smoothly discharging the cut end 147 of the canvas 61 with rubber cut by the knife 42. Is provided. The air injection mechanism 43 includes a compression pump (not shown) that supplies compressed air when the overlock sewing machine 12 operates,
An upper air hose 44 and a lower air hose 45 are connected to the compression pump. The injection port 44a of the upper air hose 44 is arranged downward so as to apply a downward pressure to the cut end 147 of the rubberized canvas. On the other hand, the injection port 45a of the lower air hose 45 is
7 is arranged at a position opening toward the entrance of the lead-out tray 46 so as to guide the 7 to the entrance of the lead-out tray 46. The outlet tray 46 has a concave cross section, and is provided to be inclined downward from the entrance provided on the upper surface of the sewing machine support 32 toward the near side in FIG.

As shown in FIG. 2, on both sides of the traveling body 11,
A synchro belt 47 for preventing the canvas with rubber from sagging is connected. The synchro belt 47 is stretched around a plurality of guide pulleys 48, 48,... Provided on both sides of the rail base 15, and the upper span 49 is set at a position equal to the upper surface of the suture base 3. Therefore, the upper span 49 of the synchro belt 47 holds the rubberized canvas 61 in a horizontal state by supporting the end of the rubberized canvas 61 protruding from the suturing table 3 toward the suturing means 2, and the above-mentioned end leans. To prevent it from happening. In addition, as shown in FIG.
Is connected to a flat plate member 149 which is continuous with the needle plate 28 of the overlock sewing machine 12, and runs following the movement of the running body 11.

Next, the configuration of the suturing table 3 will be described. As shown in FIG. 1, the suturing table 3 is composed of a frame base 50 provided on the base frame 14 and a suture plate 51 mounted on the frame table 50.
And The suture plate 51 is a rectangular flat plate, and is placed so as to protrude from the frame base 50 toward the suturing means 2. As shown in FIG. 3, the sewing direction of the suture plate 51 (X direction)
Are provided on both sides of the scale 52 in a direction perpendicular to the sewing direction, that is, in a longitudinal direction (Y direction) of the suturing table 3. A slide bar 53 extending in the X direction is slidably mounted on the scale 52 in the Y direction. The slide bar 53 is an indicating plate indicating a folded position where the canvas 61 with rubber placed on the suture table 3 is folded in two, and is moved to a predetermined position according to the scale of the scale 52. The slide bar 53 is provided with a grip portion 54,
When the operator grips the grip portion 54 and applies a force in the Y direction, the slide bar 53 moves in the Y direction.

The canvas fixing means 55 is for positioning and fixing the sewn portion of the canvas 61 with rubber, and for preventing the canvas 61 with rubber from following the movement of the overlock sewing machine 12. It is provided on the suturing means 2 side. The canvas fixing means 55 is fixed to a support frame 56 attached to the frame base 50, and a pressing plate 57 for pressing the canvas 61 with rubber, and the pressing plate 57 is vertically moved between a predetermined upper position and a lower position. And an actuator 58 provided with a motor for moving the motor. Note that the predetermined upper position is provided with an interval between the holding plate 57 and the suture plate 51,
This position is such that the sewn portion of the canvas 61 with rubber can be easily moved to the vicinity of the suturing mechanism 20 of the overlock sewing machine 12.
On the other hand, the predetermined lower position means that the pressing plate 57 comes into contact with the canvas 61 with rubber on the suture plate 51, and applies a pressing force to the extent that the canvas 61 with rubber does not shift so as to press the canvas 61 with rubber. And suture board
It is a position where it is sandwiched between 51. That is, the holding plate 57 is lifted or lowered by the operation of the actuator 58 serving as the lifting / lowering means, whereby the holding of the canvas 61 with rubber is released or the holding state is released.

A light projector 59 for emitting a light beam for positioning the sewn portion of the canvas 61 with rubber is attached to the support frame 56 of the canvas fixing means 55. The light projector 59 is set so as to project a red linear light beam along the sewing direction over the entire area of the sewing direction onto the tip of the canvas 61 with rubber protruding from the suturing plate 51 toward the suturing means 2.

The support frame 56 is provided with a signal light 60 which is turned on when the suturing device 1 is operating.

-Operation of the suturing device 1-Next, a method of suturing the canvas 61 with rubber by using the suturing device 1 will be described.

As shown in FIG. 6, the canvas 61 with rubber to be sewn is formed by pressing an adhesive rubber sheet made of an unvulcanized rubber sheet 144 onto the canvas 145, and pressing the sheet against the highly adhesive rubber sheet. A polyethylene film 143 as a film material is previously attached. The canvas 61 with rubber is cut so that the length is about 10 to 20 mm longer than the outer circumference of the cylinder.

First, the traveling body 11 is set at the starting point side in the sewing direction, and the holding plate 57 is set at the upper position. In this state, the canvas 61 with rubber is placed on the suture table 3. At this time, both ends of the canvas 61 with rubber are aligned, and the canvas 61 with rubber is folded in two such that the surface on which the polyethylene film 143 is attached is outside. Then, the polyethylene film 143 near the sewn portion is peeled off, and the unvulcanized rubber sheet 14 near the sewn portion is removed.
Expose 4.

Next, the slide bar 53 is moved to a position １ ／ of the cylinder length so that the cylindrical outer peripheral length of the sewn-in canvas 61 becomes the predetermined length. Then, while aligning the bent portion with the position of the slide bar 53, the canvas with rubber 61 is slightly moved as a whole so that the sewn portion is aligned with the position along the linear light emitted from the light emitter 59, and is aligned. I do.

Then, the holding plate 55 is moved downward by operating the canvas fixing means 55, and the portion near the sewn portion is sandwiched between the holding plate 57 and the suturing plate 51. That is, the holding plate 57
By pressing the portion in the vicinity of the sewn portion against the suture plate 51, the canvas 61 with rubber is held.

Next, in such a state, the suturing operation by the overlock sewing machine 12 is executed. Specifically, first, the gear motor 18 is activated to move the traveling body 11 in the sewing direction, and the sewing machine motor 31 is activated to operate the overlock sewing machine 12. At this time, the controller 36
The sewing machine motor 31 is inverter-controlled by the
The sewing speed such as the vertical movement speed of 25 and the traveling speed of the traveling body 11 are synchronized.

In the apparel sewing machine, the sewing machine is usually operated at a rotation speed of 7000 to 8000 rpm. However, from the results of various tests performed by the present inventors, when the canvas 61 with rubber was used as the sewing object, the sewing needle 25 was broken at the above rotation speed, and the sewing threads 29, 30 were generated by frictional heat.
Was found to melt easily. Therefore, in the present embodiment, the overlock sewing machine 12 is
It operates at a rotation speed of 0 rpm. That is, the overlock sewing machine 12 is controlled to operate at a low rotation speed.

With the operation of the overlock sewing machine 12, a small amount of water is supplied from the upper water supply hose 39 and the lower water supply hose 40. The supplied water cools the portion to be sutured and suppresses the temperature rise. Further, the sliding of the canvas 61 with rubber is improved, and the friction between the sewing needle 25 and the canvas 61 with rubber and the friction between the canvas 61 with rubber and the synchro belt 47 are reduced.

Further, along with the above-mentioned water supply, air is jetted to the cut end 147 of the canvas 61 with rubber by the air jetting mechanism 43. Therefore, the cut end 147 receives the pressure in the direction toward the entrance of the discharge tray 46, and
It is sequentially discharged through 46.

As described above, the sewing by the overlock sewing machine 12, the water supply by the water supply means 62, and the air injection mechanism
By moving the traveling body 11 in the sewing direction while discharging the cut end 147 by the 43, the upper and lower edge portions of the rubberized canvas 61 are sewn over the entire area in the sewing direction. When the traveling body 11 moves to the end point in the sewing direction, the gear motor 18 and the sewing machine motor 31 stop, and accordingly, the water supply of the water supply means 62 and the air injection of the air injection mechanism 43 also stop.

Thereafter, the pressing plate 57 of the canvas fixing means 55 is moved upward to take out both sewn edges from the suturing mechanism 20. Then, as shown in FIG. 7, both ends of the overhanged canvas 61 with the edge are sewn, and the edges of the product are pressed against each other with a roller or the like in a state where the edge end surfaces are abutted with each other, as shown in FIG. In this state, only the upper thread 29 appears on the inner peripheral surface.

As described above, a tubular body of rubberized canvas sewn by butt stitching is obtained.

-Effects of the suturing device 1- Accordingly, in the first embodiment, the following effects can be obtained.

First, the canvas with rubber is fixed by the canvas fixing means 55.
Since the sewing is performed while the overlock sewing machine 12 is running while the 61 is fixed to the suturing table 3, the sewing with the sewing machine can be performed even on the canvas 61 with rubber which is easily deformed and has low workability. Therefore, the productivity of the tubular body of the canvas with the rubber, that is, the suture can be improved.

Further, since water is supplied to the sewn portion in advance by the water supply means 62, heat generation at the time of sewing is suppressed. That is, the supplied water cools the sutured portion. As a result, it is possible to suppress an increase in the temperature of the sewn portion and to suppress the adhesion of the sewn portion. Therefore,
The melting and cutting of the sewing threads 29 and 30 due to heat can be prevented. Further, the cutting by the knife 42 can be performed favorably. In addition, since the resistance of the sewing needle 25 to the canvas 61 with rubber decreases, the insertion and detachment of the sewing needle 25 are performed smoothly. Therefore, the sewing needle 25 is less likely to be damaged. Also,
The friction between the canvas 61 with rubber and the needle plate 28 and the friction between the canvas 61 with rubber and the synchro belt 47 are reduced, and the displacement of the canvas 61 with rubber accompanying the running of the needle plate 28 and the synchro belt 47 is reliably prevented. can do.

Further, since the overlock sewing machine 12 is operated at a low rotation speed, it is possible to suppress the heat generation of the sewn portion and reduce the force applied to the sewing needle 25. Therefore, the sewing threads 29 and 30 are less likely to be melted, and the sewing needle 25 is less likely to be broken or broken, and the reliability of the apparatus and the suturing operation can be improved.

The gear motor 18 is controlled by the inverter control.
And the sewing machine motor 31, the sewing pitch can be easily set. In addition, variations in the sewing pitch are eliminated, and the sewing strength is improved. Further, since an unnecessary force is hardly applied to the sewing needle 25 at the time of sewing, the sewing needle 25 is hardly damaged.

Further, the tip of the canvas 61 with rubber on the suturing means 2 side is supported by the synchro belt 47 for preventing sag extending in the sewing direction from the needle plate 28, so that the canvas 61 with rubber is securely held. Can be prevented. Therefore, it is possible to prevent the rubber canvas 61 from being displaced, and to sew the overlock sewing machine 12 satisfactorily.

Since the scrap 147 of the canvas 61 with rubber is discharged along the lead-out tray 46 by the air injection mechanism 43,
The scrap 147 can be smoothly discharged. for that reason,
It is possible to reliably prevent the cut end 147 from tangling and hindering the suturing.

Since the light projector 59 emits the linear light for positioning, the edge of the canvas 61 with rubber is adjusted to the linear light to quickly position the sewn portion of the canvas 61 with rubber. And can be easily performed.

[0098] By the canvas fixing means 55, the vicinity of the sewn portion of the canvas 61 with rubber on the side of the sewing table 3 is fixed with a uniform pressing force over the entire area in the sewing direction, so that the sewn portion is stably held. You. Therefore, the suturing position of the overlock sewing machine 12 is stabilized, and highly accurate suturing can be performed.

The scale 52 and the slide bar 53 are placed on the suture table 3.
Is provided, the bending position of the canvas 61 with rubber can be easily and accurately determined. Therefore, an error in the circumferential length of the tubular body 61a of the canvas with rubber can be reduced.

Since a plasticizer for rubber is attached to the sutures 29, 30 in advance, the sutures 29, 30 become slippery with respect to the canvas 61 with rubber, and are not easily cut at the time of sewing. Therefore, the reliability of the suturing can be improved.

Further, since the upper thread 29 and the lower thread 30 are made different colors, it is possible to reduce the risk of the operator confusing the upper thread 29 and the lower thread 30 for use. Further, when the upper thread 29 and the lower thread 30 are used erroneously, the error can be easily detected. Therefore, the reliability of the suture can be improved.

Since the polyethylene film 143 is attached to the adhesive surface of the canvas 61 with rubber, the plurality of canvases 61 with rubber can be stored in a stacked state. In addition, the waist of the canvas 61 with rubber can be strengthened, and handling when moving to the suture table 3 becomes easy. Further, it is possible to prevent adhesion of foreign substances such as dust. Further, at the time of work, necessary items can be described on the polyethylene film.

Instead of attaching the polyethylene film 143, a cooling period of about three days may be provided after applying the unvulcanized rubber sheet 144 to the canvas 145.
As a result, the rubber is crystallized, the adhesiveness is reduced, and the elasticity is increased. Therefore, the same effect as described above can be obtained.

The canvas with rubber is not limited to one obtained by topping unvulcanized rubber on a canvas, but may be impregnated or applied, or may be produced by a composite treatment thereof.

[0105]

Second Embodiment A suturing device 90 according to a second embodiment.
Is an apparatus for continuously producing a plurality of tubular bodies from a raw fabric of unvulcanized rubber-laminated canvas.

In the following description, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

-Structure of the suturing device 90- First, the overall structure of the suturing device 90 will be described. As shown in FIG. 9, the suturing device 90 is a raw fabric of a canvas with unvulcanized rubber.
131 is attached, and a feed roller 91 and a feed roller.
92, supply-side cutter means 93 for cutting a long object of rubberized cloth sent from the raw material 131 at an arbitrary angle from the longitudinal direction to generate a cut cloth, and an edge of the cut cloth by the overlock sewing machine 12. Suturing means 119 for suturing the section,
4 and the winding-side cutter means 95 provided on the suturing table 94
And a deviation preventing means 96 for preventing deviation of the canvas with rubber during winding, a feed roller 97, and a winding roller 98. Hereinafter, the configuration of each component that is a feature of the present invention will be described.

-Structure of the supply-side cutter means 93- The supply-side cutter means 93 is configured such that a cutter means main body 99 shown in FIGS. 10 to 11 is fixed to a support (not shown). As shown in FIG. 17, one end of the support base in the longitudinal direction of the support base is formed so that the longitudinal direction of the support base makes an arbitrary angle with the longitudinal direction (warp direction) of the long object 129c of the canvas with rubber 129. It is configured to be rotatable about the part as a fulcrum. In the present embodiment, in particular, the angle is freely changeable in a range of 45 ° to 90 °.

[0109] As shown in FIG.
Is a cutter table on which the cut portion of the rubberized canvas 129 is placed.
100, a canvas fixing means 103 for pressing and fixing the rubberized canvas 129 against the cutter table 100, and a cutter 101 for cutting the rubberized canvas 129 by running in the longitudinal direction of the cutter table 100 by belt driving. .

More specifically, as shown in FIG. 11, the cutter table 100 includes flat plates 100a and 100b adjacent to each other with a gap slightly larger than the thickness of the cutter blade 102. FIG.
As shown in FIG.
A drive pulley 105 connected to the motor 104 is provided, while a driven pulley 106 is provided below the other end. A synchro belt 107 is stretched between the driving pulley 105 and the driven pulley 106. The traveling rail 10 of the cutter 101 is located below the cutter table 100.
8 is disposed in parallel with the upper span of the synchro belt 107.

The cutter 101 has a traveling platform 109 which travels in the longitudinal direction of the cutter platform 100, and a cutter blade 102 which is mounted upward on the top of the traveling platform 109 and which is disposed in a gap between the flat plate 100a and the flat plate 100b. It is composed of Trolley
The center of 109 is slidably fitted to the running rail 108, and the end on the side of the suturing table 94 (lower side in FIG. 11) is fixed to the upper span of the synchro belt 107. That is, the cutter 101 is configured to travel in the above-mentioned gap of the cutter base 100 with the cutter blade 102 having the blade edge facing upward.

At both ends of the cutter table 100, a cutter blade 10
Safety covers 110, 110 are provided to cover the cutter blade 102 so that the cover 2 is not exposed to the outside.

The canvas fixing means 103 has almost the same structure as the canvas fixing means 55 according to the first embodiment. Specifically, the holding plate 57 in the first embodiment is formed by opening the holding plate 57 downward in a U-shaped cross section. The holding member 111 is replaced with a holding member 111. That is, the actuator 58 for vertically moving the pressing member 111 is attached to the support frame 56. FIG.
As shown in FIG. 2, at the time of cutting the rubberized canvas 129, the pressing member 111 applies a pressing force to the rubberized canvas 129, and the rubberized canvas 129 is pressed against the cutter table 100 to be fixed. Then, when the cutter 101 runs in this state,
The rubberized canvas 129 is cut.

-Structure of Suture Table 94- As shown in FIGS. 13 and 14, the suture table 94 is composed of a main suture table 115 having a rectangular ceiling surface and an auxiliary table having a right-angled isosceles triangular ceiling surface. 114. Main suture table 11
5 is such that the longitudinal direction of the suturing means 11 is
It is placed so as to be orthogonal to the feed direction of the rubberized canvas 129 to be sent to 9. The auxiliary table 114 is arranged such that the oblique side forms an angle of 45 ° with the longitudinal direction. Auxiliary table 11
4 and the main suture table 115 are continuous in the longitudinal direction of the main suture table 115. The auxiliary table 114 is provided at the lower part of the main stitching table 115 so as to be housed and pulled out. ing.

The main suturing table 115 is provided with a scale and a slide bar (both not shown) similar to those of the first embodiment.

-Structure of anti-adhesion plate 123- The anti-adhesion plate 123 shown in FIG. 15 is placed on the auxiliary table 114 of the suturing table 94. The adhesion preventing plate 123 includes a triangular plate 124 slightly smaller than the upper surface of the auxiliary table 114, a roller 126 provided in parallel with the oblique side of the triangular plate 124, and a bearing member 125 that supports the roller 126. The bearing member 125 is
An extending portion 127 longer than the hypotenuse of the triangular plate 124;
And bent portions 128a and 128b provided at both ends of the. The extending portion 127 is fixed to the hypotenuse surface of the triangular plate 124. The two bent portions 128a and 128b stand from the extending portion 127 so as to face each other. In both bent portions 128a and 128b,
A bearing (not shown) for supporting the shaft of the roller 126 is formed.

The adhesion preventing plate 123 is disposed on the auxiliary table 114 so as to have a gap slightly larger than the thickness of the canvas with rubber 129. Then, as described later, the canvas 12 with rubber is used.
9 changes the traveling direction by 90 ° from the part contacting the roller 126 and moves the winding roller 98 from the raw material supply roller 91 side.
Move in a folded state toward the side. For more information,
The supply side of the rubberized canvas 129 passes under the triangular plate 124,
The winding side of the rubberized canvas 129 passes above the triangular plate 124. At this time, the roller 126 rotates along with the movement of the canvas 129 with rubber, so that the triangular plate 12 is rotated.
4 Smooth the movement of the rubberized canvas 129 from the bottom to the top.

-Structure of the suturing means 119- As shown in FIG. 9, the suturing means 119 has an angle (hereinafter referred to as a "sew angle β") between the sewing direction of the overlock sewing machine 12 and the longitudinal direction of the suturing table 94. ) Can be set to any angle within the range of 45 ° to 90 °.

More specifically, as shown in FIG.
In 119, similarly to the suturing means 2 of the first embodiment, a traveling body 11 on which an overlock sewing machine 12 is mounted is provided so as to be able to travel on a parallel rail 13. However, in the main suturing means 119, the rail base 15 provided with the parallel rails 13 is configured to be rotatable around one end side linked to the link member 120. As shown in FIG. 9, the other end side of the rail base 15 is mounted on an arc-shaped rail 121 so as to be able to travel. Further, a stopper (not shown) for fixing the rail base 15 at a predetermined angle is provided on the rail base 15 and the rail 121.

The suturing means 119 of the second embodiment is provided with the same canvas fixing means (not shown) as in the first embodiment. The support frame of the canvas fixing means is connected to the rail mount 15. Therefore, the canvas fixing means is a rail mount.
It rotates with the link portion of the link member 120 as a fulcrum together with 15. And a holding plate (not shown) of the canvas fixing means.
Are always extended along the sewing direction of the rubberized canvas, and are pressed and fixed over the entire area in the sewing direction.

The other parts of the structure of the suturing means 119 are the same as those of the suturing means 2 of the first embodiment, and the description thereof will be omitted.

-Structure of take-up side cutter means 95- The take-up side cutter means 95 is provided at the end of the suturing table 94 on the side opposite to the auxiliary table 114. Winding cutter means 95
Are provided such that the running direction of the cutter is orthogonal to the longitudinal direction of the suturing table 94. That is, the winding-side cutter means 95 is configured to cut the canvas with rubber placed on the suture table 94 at an angle of 90 ° with respect to the longitudinal direction.

The structure of the winding-side cutter means 95 is the same as that of the supply-side cutter means 93. As shown in FIG. 14, in the winding-side cutter means 95, a synchro belt for driving the cutter, a drive pulley, a drive motor, and a driven pulley (all not shown) are provided in a concave portion 11 provided on a suture table 94.
2 There is no step between the cutter table of the winding-side cutter means 95 and the main sewing table 115, and these tables are smoothly continuous.

The other construction of the winding-side cutter means 95 is the same as that of the supply-side cutter means 93, so that the description thereof will be omitted.

As the deflection preventing means 96, for example, an apparatus disclosed in Japanese Patent Application Laid-Open No. 9-30696 is used.

-Operation of the suturing device 90 (method for manufacturing a tubular body of canvas with rubber)-Next, a method of manufacturing the tubular body 130 of a canvas with rubber using the suturing device 90 will be described. Here, a description will be given of a method of manufacturing the cylindrical body 130 of the rubberized canvas with a bias in which the warp and the weft form an angle of ± 45 ° with respect to the longitudinal direction of the rubberized canvas.

First, the unvulcanized rubber is adhered to the canvas in which the warp extends in parallel with the longitudinal direction by a calendering process, a desizing process, or the like, thereby producing a long canvas with unvulcanized rubber 129. Then, the web 131 of the canvas 129 with rubber is fed to the web feed roller 91.
Attach to

Then, as shown in FIG. 17, the canvas with rubber
In order to cut the long object 129c at an angle of 45 ° from the longitudinal direction, an angle formed between the longitudinal direction of the supply-side cutter means 93 and the longitudinal direction of the long object 129c of the rubberized canvas 129 (hereinafter, referred to as “the angle”).
The supply-side cutter unit 93 is fixed at a position where the “cut angle α” is 45 °. Further, the suturing means 119 is fixed at a position where the suturing angle β of the suturing means 119 is 45 °.

In such a state, the canvas 129 with rubber is sent out from the raw material 131 to the suturing means 119 via the feed roller 92. Then, after sending out the canvas 129 with rubber of a predetermined length, the pressing member 111 of the supply-side cutter means 93 is moved down to hold the canvas 129 with rubber.

Next, the driving pulley of the supply-side cutter means 93
The cutter 105 is driven to drive the cutter 101. As a result, the long object 129c of the canvas with rubber 129 is 45 degrees from the longitudinal direction.
Cut at an angle of ゜. That is, the bias is cut. Thereafter, the pressing member 111 is moved up and the cutter 101 is moved to the starting position.

Then, the raw fabric 131 is further fed out by a predetermined length, and the long object 129 of the canvas with rubber 129 is again made in the same manner as described above.
Bias cut 129c. As a result, a cut cloth 132A as shown in FIG. 18 is obtained. Here, the side surface 132a of the cut cloth 132A is a cut surface, and the side surface 132b is a non-cut surface, that is, a side surface extending parallel to the warp.

Thereafter, in the same manner as above, the canvas with rubber 12
A similar cut cloth 132B is cut out from the long object 129c.

Then, the cut cloths 132A and 132B are arranged on the upper surface and the lower surface of the triangular plate 124 on the suturing table 94, respectively.
At this time, as shown in FIG.
Align the non-cut surfaces 132b, 132b of 2A, 132B along the sewing direction.

Thereafter, the non-cut surfaces 132b, 132b are sewn by the suturing means 119 in the same manner as in the first embodiment. As a result, a suture of a rubberized canvas in which the warp and the weft form an angle of ± 45 ° with respect to the longitudinal direction is obtained.

Then, by pulling the cut cloth 132A located above the triangular plate 124 toward the take-up roller 98, the cut cloth 132B located below the triangular plate 124 is taken up by the take-up roller.
Move to 98 side. Then, a cut cloth 132C is cut out from the long object 129c of the rubberized canvas 129 on the raw fabric 131 side, and the cut cloth 132C is sewn to the above-mentioned suture. In this manner, by repeating the cutting of the cut cloth and the butt stitching, a plurality of cut cloths 132A, 132B,
A biased suture 133 of rubberized canvas consisting of 132C, ... is obtained.

The suture 133 of the canvas with the rubber is provided with
It is sent to the winding roller 98 by 96 and the feed roller 97,
It is wound by this winding roller 98. As a result, the material of the suture 133 sewn in the bias is applied to the take-up roller 98.
133a is generated.

Next, as shown in FIG.
Is moved on the rail 121 to set the suturing means 119 to the position where the suturing angle β is 90 °. Then, after removing the adhesion preventing plate 123, the auxiliary table 114 is stored in the main suturing table 115, and a second upper surface having a rectangular shape is provided between the main suturing table 115 and the suturing means 119.
An auxiliary table 134 is installed. The upper surface of the second auxiliary table 134 and the upper surface of the main suturing table 115 are smoothly continuous, and one side of the second auxiliary table 134 on the side of the suturing means 119 is located near the suturing means 119.

In this state, the take-up roller 98 is rotated in the reverse direction, and the suture 133 of the canvas with rubber is sent out to the suturing means 119 side. Then, the suture 133 is cut by the winding-side cutter means 95 so that the length in the longitudinal direction becomes a predetermined circumferential length, thereby producing a belt-shaped canvas with rubber. The cutting operation of the winding-side cutter 95 is performed by the supply-side cutter 9.
3 is the same as the cutting operation.

Thereafter, in the same manner as in the first embodiment, the band-shaped canvas with rubber is bent at a predetermined position, and both edge portions are sewn with suturing means.
Overlap on the 119 side. Then, alignment is performed in accordance with linear light from a light projector (not shown), and the belt-shaped rubberized canvas is held at a predetermined position. Then, both edge portions are overlock-stitched by the overlock sewing machine 12. Then, by squeezing the sewn portion with a roller or the like, the end faces of both edges are abutted.

By repeating such operations, a plurality of tubular bodies of rubberized canvas are continuously formed.

-Effects of the suturing device 90- Accordingly, in the second embodiment, the following effects are obtained in addition to the effects described in the first embodiment.

That is, according to the main suturing apparatus 90, all steps from the raw cloth 131 of the unvulcanized rubberized canvas to the production of the tubular body of the rubberized canvas are continuously executed by a single apparatus. can do. As described above, since the tubular body of the rubberized canvas can be continuously manufactured by a single device, it is necessary to transport or store the belt-shaped rubberized canvas (cut pieces) generated during the manufacturing. Absent. Therefore, the space for storage can be reduced. Further, work efficiency can be improved. In particular, a large rubber-weighted canvas with a large rubber weight ratio was easily deformed, so its workability was poor.However, according to the main suturing device 90, a series of steps are performed continuously,
Workability is dramatically improved.

The suturing angle β of the suturing means 119 is
By moving 15 along the arc-shaped rail 121,
Can be adjusted easily. Therefore, when the suture angle β is 4
It can be quickly and easily set to any angle between 5 ° and 90 °. Also, the supply-side cutter means 93
Since the cutter base 100 is configured to be rotatable about one end in the longitudinal direction as a fulcrum, the cut angle α of the supply-side cutter means 93 can be quickly and easily set to any angle from 45 ° to 90 °. can do. Therefore, work efficiency can be further improved.

By storing or removing the auxiliary table 114 of the suturing table 94, one side of the suturing table 94 on the side of the suturing means 119 can be easily adapted to the sewing direction of the suturing means 119. Therefore, work efficiency can be further improved.

Since the adhesion preventing plate 123 is provided on the auxiliary table 114, it is possible to reliably prevent the cut cloths 132 of the canvas with rubber from adhering during sewing. Further, since the adhesion preventing plate 123 is provided with the roller 126, it is possible to smoothly send the biased sewing material 133 of the canvas with the rubber to the winding roller 98 side.

<Modification> In Embodiment 2, the angle between the longitudinal direction of the canvas with rubber and the warp is set to 45 °.
This angle is not limited to 45 ° and can be set to any angle depending on the properties of the rubber and the canvas. For example, it may be set to 74 °.

Further, the auxiliary table 114 may be constituted by a separate type table which can be easily moved. For example, the auxiliary table 114 may be a single table provided with wheels for movement at the bottom. That is, the main suturing table 115 and the auxiliary table 114 may be configured in a separate type.

In order to stabilize the properties of the canvas with rubber and to improve the working environment, it is preferable to provide the suturing devices 1 and 90 in a working room where the temperature and humidity are controlled.

[0149]

As described above, according to the first or fifteenth aspect of the present invention, the rubberized canvas is held on the suturing table, and the sewn portion is sewn while running the sewing machine. Even if the canvas is weakly deformed and easily deformed, it can be sutured well.

According to the second aspect of the present invention, the rubberized canvas can be securely held by pressing the rubberized canvas against the suture table with the pressing plate. Also, by raising and lowering the holding plate by the lifting means,
The holding of the canvas with rubber and the release of the holding state can be performed quickly and easily.

According to the third aspect of the invention, since the running speed of the sewing machine is synchronized with the rotation speed of the sewing machine, the sewing pitch is constant. Further, since no extra force is applied to the sewing needle during sewing, breakage of the sewing needle can be prevented.

According to the fourth or eighteenth aspect of the present invention, the temperature rise of the sewn portion of the canvas with rubber is suppressed, so that the dissolution of the suture can be prevented.

According to the invention as set forth in claim 5 or 19, the adhesion of the sutured portion can be suppressed. Therefore, cutting with a scalpel can be improved. Also,
Since the resistance of the sewing machine needle is reduced, good suturing can be realized, and breakage of the sewing machine needle can be reliably prevented.

According to the sixth aspect of the present invention, the cut ends of the rubberized canvas can be discharged through the lead-out passage, so that it is possible to reliably prevent the cut ends from entanglement and hinder the suturing, thereby improving the suturing. Can be done.

According to the seventh aspect of the present invention, it is possible to easily distinguish between the upper thread and the lower thread. Therefore, the risk of misuse of the sewing thread can be reduced. Further, even if there is an erroneous use, the error can be easily found.

According to the eighth aspect of the present invention, it is possible to improve the sliding of the sewing thread with respect to the canvas with rubber. Therefore, the suture can be hardly cut, and the reliability of suturing can be improved.

According to the ninth aspect of the present invention, it is possible to prevent the canvas with the rubber from sagging from the suturing table, and it is easy to maintain the sewn portion at an appropriate position. Therefore, the sewing operation of the sewing machine can be performed favorably.

According to the tenth aspect of the present invention, the position of the sewn portion can be quickly and easily adjusted by adjusting the edge of the canvas with rubber to the linear light beam projected by the projector.

According to the eleventh aspect of the present invention, the one side of the sewing table and the running direction of the sewing machine are positioned along the inclined surface of the bias-cut rubberized canvas, and the sewing by the running of the sewing machine is performed. This can be done along an inclined surface. Therefore, it is possible to sew a canvas with rubber having a bias angle of 45 ° to 90 °.

According to the twelfth aspect of the present invention, it is possible to reliably prevent adhesion of the rubberized canvases at the time of suturing, and to facilitate handling of the rubberized canvas at the time of suturing and after suturing. .

According to the thirteenth aspect, the rubberized canvas can be folded at an accurate position. Therefore, the accuracy of the circumferential length in cylindrical sewing can be improved.

According to the fourteenth aspect of the present invention, a step of supplying a long article of rubberized canvas from a raw material, a step of cutting the supplied long article of rubberized canvas, and a step of cutting a cut piece of rubberized canvas. Suturing process, winding process of the sewn suture, feeding process of the wound sewn product to the suturing table, cutting process of the sewn product at a predetermined length, and cylindrical sewing process of the cut band-shaped rubberized canvas Can be continuously performed by a single device.

According to the sixteenth aspect of the present invention, since the adhesion of the rubberized canvas can be prevented, the plurality of rubberized canvases can be stored in a stacked state. Also,
The waist of the rubberized canvas can be strengthened. In addition, it is possible to prevent foreign matter from adhering to the rubberized canvas. Therefore, it is possible to easily handle the canvas with rubber.

According to the seventeenth aspect, a tubular body of a biased rubberized canvas can be continuously manufactured from a raw material of a rubberized canvas having a large rubber weight ratio.

[Brief description of the drawings]

FIG. 1 is a side view of a suturing device according to a first embodiment.

FIG. 2 is a front view of the suturing device according to the first embodiment.

FIG. 3 is a plan view of the suturing device according to the first embodiment.

FIG. 4 is a front view of the overlock sewing machine.

FIGS. 5A to 5C are partially enlarged views illustrating the operation of the suturing mechanism.

FIG. 6 is a sectional view of a canvas with rubber.

FIGS. 7A and 7B are cross-sectional views of a sewn portion of a canvas with rubber after suturing.

FIG. 8 is a plan view of a sewn portion of the canvas with rubber after suturing.

FIG. 9 is an overall configuration diagram of a suturing device according to a second embodiment.

FIG. 10 is a front view of a cutter means main body.

FIG. 11 is a plan view of a cutter means main body.

FIG. 12 is a partially enlarged sectional view of a cutter means main body.

FIG. 13 is a plan view of the suturing table.

FIG. 14 is a side view of the suturing table.

FIG. 15 is a plan view of an adhesion preventing plate.

FIG. 16 is a plan view of the suturing means.

FIG. 17 is an overall configuration diagram of the suturing device during a suturing operation.

FIG. 18 is a plan view of a cut cloth.

FIG. 19 is a plan view showing a suture of a canvas with rubber at the time of suturing.

FIG. 20 is a plan view of a suture of a canvas with rubber.

FIG. 21 is an overall configuration diagram of a suturing device before cylindrical sewing.

FIG. 22 is a perspective view of a V-ribbed belt.

FIG. 23 is a process chart of topping an unvulcanized rubber sheet on a canvas.

FIG. 24 is a perspective view of a long object of the canvas with rubber.

FIG. 25 is a cross-sectional view showing the molding device immediately after the V-ribbed belt has been vulcanized.

[Explanation of symbols]

 2 Stitching means 3 Stitching stand 11 Traveling body 12 Overlock sewing machine 13 Parallel rail 18 Gear motor 31 Sewing machine motor 43 Air ejection mechanism 46 Outgoing tray 47 Synchro belt 57 Press plate 58 Actuator 59 Emitter 62 Cooling means

Claims (19)

[Claims] 1. An apparatus for sewing a rubberized canvas for sewing a rubberized canvas comprising a canvas and an unvulcanized rubber, wherein a sewing table on which the rubberized canvas is placed and a sewn portion of the rubberized canvas overlap each other. Holding means for holding the rubberized canvas on the suturing table so as to be in a folded state; a sewing machine for sewing a sewn portion of the rubberized canvas held by the holding means with a sewing thread; and Running means for running the sewing machine in a direction along a portion to be sewn of the rubberized cloth at the time of suturing. 2. The suturing device for a rubberized canvas according to claim 1, wherein the holding means presses and fixes the rubberized canvas placed on the suturing table to the suturing table, and the holding plate. And a raising and lowering means for raising and lowering the cloth. 3. The sewing apparatus according to claim 1, wherein the running means includes a controller for adjusting a running speed of the sewing machine in accordance with a rotation speed of the sewing machine. Canvas suturing device. 4. The sewing apparatus for a canvas with rubber according to claim 1, further comprising cooling means for supplying a coolant to a portion to be sewn of the canvas with rubber. 5. A sewn apparatus for a canvas with rubber according to claim 4, wherein the cooling means is constituted by a water supply means for dropping or spraying water on a sewn portion. Suture device. 6. The sewing machine according to claim 1, wherein the sewing machine is provided with a scalpel provided with a scalpel for cutting an edge of a sewn portion of the rubberized canvas and aligning an edge of the sewn portion. A sewn-out passage that guides a snip of the sewn portion; and gas injection means that injects gas into the stub and guides the stub to the outflow passage by the pressure of the gas. A sewing apparatus for a canvas with rubber. 7. The sewing apparatus for a canvas with rubber according to claim 1, wherein the sewing machine is configured to sew a sewn portion of the canvas with rubber with an upper thread and a lower thread, and the upper thread and the lower thread. Is a sewing device for a canvas with rubber, characterized by different colors. 8. The sewing apparatus for a canvas with rubber according to claim 1, wherein a rubber plasticizer is attached to the sewing thread. 9. The suturing device for a rubberized canvas according to claim 1, wherein the suturing platform is configured such that a sewn portion of the rubberized fabric projects from one side of the suturing platform. A belt for preventing sagging is provided between one side of the table and the sewing machine to support a protrusion of the rubberized canvas from the suture table along the one side. Canvas suturing device. 10. The suturing device for a rubberized canvas according to claim 1, further comprising a light projector for projecting a linear light beam indicating an installation position of a portion to be sewn on the rubberized canvas. Canvas suturing device. 11. The suturing device according to claim 1, wherein the suturing table is configured such that a sewn portion of the sewn rubber protrudes from one side of the suturing table. One side of the platform is 4
The traveling means includes a sewing machine support for supporting the sewing machine, a traveling rail on which the sewing machine support is movably mounted, and a traveling rail. Running direction changing means for positioning the running rail in a direction along one side of the suturing table in accordance with the predetermined angle. 12. The suturing device for a rubberized canvas according to claim 1, wherein the suturing table is provided with an adhesion preventing plate provided between the superposed rubberized canvases to separate the two rubberized canvases. A sewing apparatus for a canvas with rubber. 13. The suturing device for a rubberized canvas according to claim 1, wherein the sewn table is provided with a sewn portion when the rubberized sack placed on the sewn table is folded in two and sewn into a cylinder. An indicating plate indicating a position of a half of the outer circumference of the cylinder is provided so as to be slidable in the longitudinal direction of the suture table, and a scale for adjusting the position of the indicating plate is arranged in the longitudinal direction of the suture table. A suturing device for a canvas with rubber, which is provided. 14. The sewing apparatus for a rubberized canvas according to claim 11, wherein a raw fabric of the rubberized canvas is attached, and a raw fabric supply roller for feeding a long object of the rubberized canvas from the raw fabric; Supply-side cutter means for cutting a long object at a predetermined angle within a range of 45 ° to 90 ° from a longitudinal direction to generate a cut cloth of a canvas with rubber supplied to the suturing table; A sewn body of a canvas with rubber, which is sequentially sewn by a sewing machine, is collected from the suturing table, wound up once in a roll shape, and then sent out to the suturing table. Winding-side cutter means for cutting the suture body mounted on the table at a right angle to the longitudinal direction and generating a strip-shaped rubberized canvas of a predetermined length to be sewn into a tubular shape by the sewing machine. Feature Suturing device for a continuously with canvas. 15. A method for suturing a rubberized canvas comprising a canvas and an unvulcanized rubber, the method comprising the steps of: (a) placing a rubberized canvas on a sewing table; A sewing method for a canvas with rubber, characterized in that the sewing machine is operated while running the sewing machine in a direction along the sewn portion to stitch the sewn portion. 16. The method for suturing a canvas with rubber according to claim 15, wherein a film material is attached to the adhesive surface of the canvas with rubber before placing the canvas with rubber on a sewing table. Method of sewing a canvas with rubber. 17. A method for sewing a canvas with rubber for sewing a canvas with rubber comprising a canvas and an unvulcanized rubber, comprising the steps of: sending out a long-sized canvas with rubber from a raw fabric of the canvas with rubber; A step of cutting the long object at a predetermined angle within a range of 45 ° to 90 ° from the longitudinal direction to generate a cut cloth of the canvas with rubber, and thereafter, while running the sewing machine on the non-cut surfaces of the cut cloth. Suturing, a step of generating a sewn body of a canvas with rubber, in which a plurality of cut cloths are sequentially sewn; then, winding and collecting the sewn body on a winding roller, A step of sending the suture body by rotating in the reverse direction, cutting the suture body to a predetermined length to produce a canvas with a band-like rubber, and then suturing the cut surfaces of the canvas with the belt-like rubber while running a sewing machine. , Rubber canvas tube Producing a shape-like body. 18. The method according to claim 15, wherein a coolant is supplied to a portion to be sewn on the rubberized canvas during sewing of the sewing machine. How to sew a sailcloth. 19. The method for suturing a canvas with rubber according to claim 18, wherein water is supplied as a cooling agent.