JPH07103515B2 - How to fold a fiber blanket - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for folding a belt-shaped fiber blanket into a continuous m-shaped or corrugated shape, and in particular, it is possible to freely bend a ridge at any desired height. Can be changed to
The present invention relates to a zigzag folding method capable of producing a folding blanket having even widthwise end portions in a short time.

[Prior art]

When using a band-shaped fiber blanket as a heat insulating material for a heating / cooling room, a tube furnace wall, or other materials, in order to increase the heat insulating thickness, the blanket is folded and compressed into a continuous S-shaped insulation block ( It is known to utilize this). As a specific folding method of this module, generally, a method of sequentially folding from one end of the belt-shaped fiber blanket can be considered.

[Problems to be solved by the invention]

In the method of folding the ridges one by one, the heights of the ridges are likely to be uneven due to the changes in the thickness and density of the blanket blank, and the ends in the width direction are also likely to be uneven. To change the folding mountain to any height according to demand, such as changing the thickness,
There were problems such as complicated and troublesome steps.

If the ends in the width direction are not aligned, the ends will have to be trimmed after folding and the yield will deteriorate.

In addition, the method of folding the folded ridges one by one has a problem that the folding speed is slow and it takes time.

The object of the present invention is to easily change the height of the ridge according to the demand, and to produce a module with the height of the ridge and the end portions in the width direction being uniform, and having a good yield. Another object of the present invention is to provide a method for folding the belt-shaped fiber blanket in a zigzag manner, which enables efficient folding.

[Means for solving problems]

The present inventors have conducted research to solve the above-mentioned problems, and have been conducted at a plurality of locations at predetermined intervals in the length direction of a strip-shaped fiber blanket previously cut into a length required for producing one module. The inventors have found that if the brackets are sandwiched from above and below, and the spacing between the scissors is shortened and folded all at once, the heights and widths of the mountains can be evenly and efficiently folded, and the present invention has been completed.

That is, the present invention locates a strip-shaped fiber blanket cut to a required length on a belt conveyor, pulls the blanket from the surface of the belt conveyor, and places the blanket at a plurality of predetermined intervals in the blanket length direction. A method for folding a fiber blanket in a zigzag shape, characterized in that the bracket is sandwiched between two upper and lower horizontal rods, and then the spacing between adjacent scissor portions is reduced so that the sandwiched portions become ridged and compressed. Is.

The band-shaped fiber blanket may be a fiber blanket of animals or plants in addition to inorganic fibers such as glass wool, rock wool, and ceramic fibers. It may also be a knitted cloth. Usually, the height of the fold corresponding to the required thickness of the module, the thickness of the blanket and the required length of the blanket calculated from the required length of the module are cut in advance and conveyed to a predetermined position by a belt conveyor.

Next, the blanket is pulled from the surface of the belt conveyor.The method is to lift the blanket upward with a raw fabric lifter from between the strip conveyors with an interval, and to keep the blanket in the same position with this raw fabric lifter. Then, a method in which the conveyor itself is settled downward can be considered. In the method of lifting, the conveyor itself is used as a lifting conveyor, and it is preferable to perform it in cooperation with the rise of the conveyor main body and the rise of the blanket original fabric lifter tying to the main body, but from between the strips of the belt conveyor belt at intervals Lifting the blanket original fabric The blanket is lifted above the surface of the conveyor by the action of the original fabric lifter or the like. As a method of holding the blanket in its original position, the original fabric lifter supports the blanket on the conveyor in its original position, the conveyor is settled downward, and the blanket is pulled from the conveyor. Is projected to the lower surface of the blanket to hold the blanket. This retracted position, that is, the lifted position or the held position,
When the raw cloth receiving rod (lower side rod) that penetrates the inside of the shaft of the intersection of the pantograph type parallel link mechanism arranged in the length direction on the side of the belt conveyor protrudes from the bottom surface of the blanket Position to support.
Therefore, the plurality of rods for receiving the original fabric can be uniformly spaced by the link mechanism. On the other hand, the portal frame that holds the pantograph-type parallel link mechanism inside can move up and down at the same time by a fluid cylinder or the like at a position on the conveyor side so that it becomes a pair with the raw fabric receiving rod in the vertical direction. Moreover, a plurality of original fabric pressing rods (upper side rods) are arranged so that the adjacent intervals can be uniformly changed simultaneously with the original fabric receiving rod. By providing the gate frame on the shaft portion of the crossing portion of the link mechanism, the receiving rod and the pressing rod form a vertical pair.

Although it is considered that such a device is preferable, the device is not necessarily limited to this device, in short, at a plurality of positions at predetermined intervals in the blanket length direction at a position separated from the conveyor by a lifter. The blanket can be sandwiched between the upper and lower horizontal rods. That is, the blanket is squeezed between the original fabric receiving rod and the original fabric pressing rod at the fold position, and the interval between the rods is reduced uniformly at the same time by the pantograph type parallel link mechanism, and the blanket is folded at once. Although the apparatus has been described, if, for example, the interval between a specific rod and an adjacent rod is changed, this interval may be detected, and a control mechanism or the like may be adopted that follows this interval for other intervals. Also, if the pinching part is uniformly and simultaneously reduced in this way, the blanket can be folded all at once, which is efficient, but if it is not so quick, a certain pinching part can be fixed and the end part The spaces may be sequentially compressed from the scissors part and then folded inward.

Even with this method, compared with the conventional method in which the blanket is free and folded from one side, each fold mountain is sandwiched at regular intervals, and this interval is reduced in the direction perpendicular to the pinching rod, so the height of the mountain is reduced. There is no risk that the ends in the sheath width direction will be uneven.

The raw material receiving rod may be a round rod, or a wedge-shaped rod is preferable. It is preferable that one of the raw fabric pressing rods has a structure in which a middle groove extending in the length direction of the rod is provided on the lower surface.

It was explained that the blanket is pulled on the conveyor and sandwiched by the upper and lower horizontal rods at multiple points at regular intervals.Before pulling the blanket from the conveyor, make creases at regular intervals on the blanket. Is preferred. This method will be described.

A comb-shaped electric motor that is located on the side of the belt conveyor and extends in the direction of the conveyor.The crease rods can be changed uniformly from the main body in the width direction of the conveyor according to the height of the required ridge. And the gear mechanism allows the main body to move up and down the creased rod by the fluid cylinder. It is convenient to use a device such as a crease machine, but even if such a device is not used, the important point is to provide a crease bar extending in the width direction at a predetermined interval on the blanket on the conveyor. It is sufficient to make a crease in the blanket by pressing down. The creasing bar may be a round bar, but it is preferable that the lower surface has a wedge shape.

If there is a crease, retract the rod with crease by retracting it upward or retracting it to the side.

Next, the folding method will be described. Folding is performed in three stages. Since the valleys may rise in the reverse direction when the original fabric is folded in the first stage, an original fabric rise prevention guide is provided in the middle of each scissoring part. The tip of this guide can be lowered below each scissors, and extends in the width direction of the blanket. This guide can be used also as a projecting piece driving guide of a module supporting beam having a projecting piece, which is driven into the valley portion if necessary. This support beam extends in the width direction in the valley portion, and a projecting piece comes out from the vicinity of the midpoint thereof, penetrates the blanket, and is projected to the outside of the module. This protruding piece serves as a mounting member when the module is mounted on the wall of the tube furnace or the like. When the spacing between the scissors is fixed at the end or center and the contractions are reduced in the horizontal direction, when the valleys try to rise, this swelling prevention guide directs downwards, and the wave Play a role in adjusting. If a crease is previously formed at the midpoint of each of the pinching portions, the downward direction can be more easily oriented.

As the second step, when the orientation with the swelling prevention guide is finished, the interval is reduced to the range where the original can be grasped by the unloader and folded. Pull out the original fabric receiving rod (lower side rod) while grasping with the unloader, and press the original fabric holding rod (upper side rod)
To evacuate.

As the third stage, the unloader compresses the original fabric to the specified compression ratio,
Make a fold shape with all the folds. At the time of compression, it is possible to improve the alignment of the folds if they are received by pressing plates or bars above and below the folds.

[Examples] The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

(Embodiment 1) A method for carrying out the present invention will be described with reference to the accompanying drawings showing an apparatus suitable for carrying out the method according to the present invention.

A blanket of strip-shaped fibers, for example, a raw fabric blanket made of inorganic fibers, is usually wound in a roll shape. The roll is unwound and cut into a length required for a target product module in advance, and then, as shown in FIG. As shown in (1), the belt-shaped blanket 1 is carried on the belt conveyor 2 and set at a predetermined position.

As shown in FIG. 3, it is possible to push the belt conveyor 2 onto the belt conveyor from the side of the belt conveyor by the electric gear drive device 4, and then push the piston cylinder 5 downward. A plurality of folding rods 3 are provided at predetermined intervals according to the required module height so that the blankets can be folded in the width direction of the blanket 1. With this, the blanket is pressed to make the folding. The adjoining distance between these creasing rods 3 can be freely changed according to the height of the folding peak. In order to make the folds 6 on the blanket 1 at the same time, it is desirable to connect one ends of the foldable rods 3 to each other and move the connecting rods laterally or vertically.

As shown in the partial detailed view of FIG. 2, the folds 6 are formed in a wedge shape on the pressing surface of the bar 3 with folds so that the blanket 1 is partially wedge-shaped in the width direction.

Then, the group of the creased rods 3 is appropriately retracted from the top of the belt conveyor 2 to the side or the upper side.

In FIG. 4, at this position, the original fabric blanket 1 itself is directed in the vertical upward direction from above the belt conveyor 2 by the joint operation of the original fabric lifter 7 or the lifting device of the conveyor itself and the original fabric lifter 7, and is arranged in advance above the belt conveyor. At the same time as lifting up to a height position close to the plurality of upper horizontal rods 9 (Figs. 5 and 6), the lower horizontal rods 8 are pushed out below the blanket. In FIG. 5 and FIG. 6, a plurality of scissoring devices that press the upper horizontal rod downward and form a pair of upper and lower horizontal rods are simultaneously provided at each intermediate position of each adjacent fold and both end positions of the blanket. Operate and pinch the blanket. Next, the lifter 7 of the blanket is lowered toward the frame of the belt conveyor 2 below.

The method of sandwiching the upper and lower horizontal rods is not particularly limited, but the upper horizontal rod is always movable to a position corresponding to the lower horizontal rod, and the fluid-driven piston cylinder 10 such as air or hydraulic pressure is used. By pushing down on the horizontal rod 8 below, a predetermined portion of the original blanket is evenly pinched in the width direction.

The lower horizontal rod 8 of each set is a central link shaft of the pantograph parallel link mechanism 11, 11 'arranged on the side of the belt conveyor.
The inside of 12 is penetrated so that it projects toward the belt conveyor.

According to the scissoring device composed of the two upper and lower horizontal rods, one end of the parallel link mechanism of the pantograph is compressed by the gear drive device (Fig. 9) of the electric motor (Fig. 9), etc. The scissors can uniformly reduce or increase their adjacent spacing.

Therefore, as shown in FIG. 7, the original blanket 1 sandwiched between the upper and lower horizontal rods is reduced in size by the parallelizing mechanism of the pantograph, so that each sandwiching part is uniformly contracted so that the blanket sandwiching part is At the same time, folds are made in the mountains so that the folds are valleys.

In addition, in order to prevent the valley of the crease from rising, it is possible to prevent
It is desirable to push down the above-mentioned bar with folds or other original fabric swelling prevention guide 13 at each fold, as shown in FIG.

When the parallel link mechanism of the pantograph is compressed to the final position in FIG. 7, the original blanket is completely compressed in a zigzag shape with the pinching portions 8 and 9 forming peaks and the folds forming valleys. .

This compressed blanket is a gripper (not shown)
Continuously pull in the lower horizontal rod, which was projected at the stage of compressing and holding it from the left and right with the crimping plate, sideways from above the belt conveyor, pull it out from the module, and pull up the upper horizontal rod as well. The S-shaped zigzag folded module is moved to the next belt conveyor or to the side of the belt conveyor by a gripping machine while being compressed from both sides. It can be packed with a cable tie with card paper if necessary.

A pantograph-type parallel link mechanism that is preferable as a device that can pinch a raw fabric and uniformly reduce and expand the interval
It will be described with reference to the drawings.

The pantograph type parallel link mechanism has two types of parallel bars 11 and 1.
1 ′ are linked to each other, and the crossing shaft 12 at the center of them is connected to the rail 2
It is designed to slide horizontally along 1. This axis 12
The lower horizontal rod 8 penetrates the inside of the. On this axis is a portal formwork 18
The sliding mechanism of the upper horizontal rod 9 and the pressing cylinder 10 are mounted on the belt conveyor side of this frame. The central cross shaft 12 slides horizontally along the rail 21,
The device in which the lower horizontal rod penetrates the inside of this shaft and the gate formwork 18 is attached to this shaft has been described, but the lower crossing shaft 16 or the upper crossing shaft 17 of the parallel rods 11 and 11 'is arranged along the rail. It is also possible to slide horizontally so that the lower horizontal rod penetrates the inside of this shaft and attach a portal frame to this shaft, and the operation is exactly the same.

By the parallel link mechanism of this pantograph, the lower side rod and the upper side rod correspond to each other in a pair up and down, and even when the space between the side rods is compressed, the intervals can be always kept uniform. Either fix the end 20 of this parallel link mechanism, or use the central part 19 as a fixed point and press the other end to the left with the gear drive device 22 of the electric motor, and pinch the raw material with the upper and lower horizontal rods. It is possible to reduce the intervals all at once, while maintaining the even intervals in the closed state.

(Example-2) A band-shaped blanket made of inorganic fibers (thickness: 25 mm, width: 605 m)
After accurately cutting a roll of m) into a length of 4,800 mm, it was moved onto the belt conveyor 2 and set at a predetermined position.

Seven wedge-shaped rods arranged adjacent to each other at 600 mm were simultaneously pushed down by a hydraulic cylinder at one end to form seven wedge-shaped creases.

Then, after lifting this blanket upward with the original fabric lifter at the same position, the blanket length midpoint part of each fold and both end parts of the blanket are spanned by the parallel movement of the central link shaft of the parallel link mechanism. It was sandwiched by eight scissors, which consisted of a lower rod and an upper rod that could be freely changed.

By pushing from one end of the parallel link mechanism to the other end by the electric gear, the span of the pinching portion in the 8th period was gradually compressed.

At the initial stage of compression, the folds at the central portions of the scissors part were pushed down by the swelling prevention guide.

By bringing the spans of each scissors close to the minimum position, a thickness of 600 mm consisting of 8 peaks and 7 valleys with a height of 300 mm.
It could be compressed into a mm-shaped, zigzag, inorganic fiber block. The lower side rod is pulled out while the both side surfaces are grasped by the grasper, the upper side rod is retracted upward, and the module is moved.

〔The invention's effect〕

In the conventional method of folding the folded ridges one by one, the step change is complicated to change the folded ridges to an arbitrary height according to the demand such as changing the thickness. However, according to the present invention, You only have to adjust the spacing between the scissors, and if you also adjust the spacing at one place, the entire spacing will be adjusted automatically.
It is extremely easy to change the height of the folding mountain.

In the conventional method, the heights of the peaks were likely to be uneven due to the changes in the thickness and density of the blanket, but if these data are taken into account when cutting the blanket length and determining the spacing between the sandwiching parts. , It is formed by sandwiching each mountain and valley at equal intervals, so the height of the mountain is uniform.

Since the blanket is sandwiched by the transverse rods at right angles to the lengthwise direction, the ends in the width direction are not uneven, and therefore trimming is not required and the yield is not reduced.

If the distance between the scissors is reduced at once with a device such as a parallel link mechanism, folding can be done at once and the folding speed is quick.

Therefore, according to the method of the present invention, it is possible to efficiently fold a module in which the heights of the ridges and the ends in the width direction are even, and to fold them efficiently, and it is possible to easily deal with dimensional changes.

[Brief description of drawings]

FIG. 1 is a side elevational view showing a step of reducing the distance between the pinching portions of the original fabric blanket and folding it in, which is the main step of the present invention. FIG. 2 is a side elevational view showing the first step of the present invention, which is a step of making a crease by pressing a scoring rod at predetermined intervals on a blanket located on a conveyor. FIG. 3 is a sectional elevation view of the step of FIG. 2 seen from the length direction of the conveyor at the position of the bar with a fold. FIG. 4 is a side elevational view showing a step of extruding the lower horizontal rod onto the lower surface of the blanket lifted from the conveyor surface by the original fabric lifter. FIG. 5 is a side elevational view showing a step of pressing the upper horizontal rod against the raw fabric blanket supported by the lower horizontal rod and sandwiching it. FIG. 6 is a sectional elevation view of the process of FIG. 5 as seen from the length direction of the conveyor at the lower horizontal rod position. FIG. 7 is a side elevational view of a process in which the blanket is folded with the interval between the pinching portions reduced. FIG. 8 is a side elevational view showing a parallel link mechanism of a pantograph. 1 ... original blanket, 2 ... belt conveyor, 3 ...
… Folded bar, 6 …… Fold, 7 …… Original fabric lifter, 8
...... Lower horizontal rod, 9 ...... Upper horizontal rod, 10 ...... Upper horizontal rod pressing fluid cylinder, 11, 11 '...... Pantograph parallel link mechanism, 12 ...... Pantograph parallel link central link shaft, 13 ... … Material roll rise prevention guide, 16 …… Lower cross shaft of link mechanism, 17 …… Upper cross shaft of link mechanism, 18 ……
Gate frame, 19 …… Slide groove for fixed center, 20 ……
Fixing points for end fixing, 21 ... Link shaft sliding shaft, 22 ...
… An electric gear mechanism that reduces and expands the link interval.

Claims (4)

[Claims] 1. A belt-shaped fiber blanket cut to a required length is placed on a belt conveyor, the blanket is then pulled from the surface of the belt conveyor, and the blanket is arranged at predetermined intervals in the longitudinal direction. A fiber blanket characterized in that the bracket is sandwiched between two upper and lower horizontal rods at a plurality of positions, and then the interval between adjacent scissors is reduced so that the sandwiched parts are folded and compressed to form a mountain. How to fold it in a zigzag shape. 2. A blanket on a belt conveyor is provided with a plurality of folds in the width direction at predetermined intervals in the length direction, and then the bracket is not pulled from the surface of the belt conveyor, and each adjacent fold is formed. The intermediate position in the length direction and the both ends in the length direction of the bracket are sandwiched by the two upper and lower horizontal rods, and then the adjoining intervals of the respective sandwiching parts are reduced to make the creases in valleys and the sandwiching parts. The method of folding a fiber blanket according to claim 1, wherein the method is folded in a mountain shape. 3. The method of folding a fiber blanket according to claim 1 or 2, wherein the spacing between adjacent scissors is uniformly reduced by a parallel link mechanism. 4. The method for folding the fiber blanket in a zigzag shape according to claim 2, wherein the folds are pushed down by a scoring rod at an initial stage of folding.