JPS6322456A - Feeding device - Google Patents

Abstract

PURPOSE:To continuously send out a defined quantity of sheet at a constant tensile force by providing one movable roller which is moved vertically by its own weight in between two fixed rollers, and conveying a long size sheet via said fixed roller, movable roller, and fixed roller in order. CONSTITUTION:Two fixed rollers 2 having mutually parallel shafts are rotatably provided on the top end parts of a frame body 1. And, a roller 3 which is vertically moved along four guide bars 5 provided on the frame body 1 is provided in parallel with the fixed rollers 2. A long size handling object (sheet) 7 is conveyed in the direction of the arrow via a relay 8 and the rollers 2, 3, 2. When connecting the sheet 7 by means of the relay 8 or when the feed of the sheet 7 is delayed for some reason, the movable roller 3 is lifted up in the range of the remaining length 20, whereas, when the draw off of the sheet 7 is delayed, the roller 3 is lowered by its own weight. The up and down movement of the roller 3 is stopped when it arrives at the upper and lower limits. Thereby, a defined quantity of sheet can be continuously fed at a constant tensile force.

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to a feeding device for a long object to be processed.

[Background technology]

For example, a method for continuously manufacturing a laminate is performed as follows.

A strip-shaped base material made of glass cloth or the like is impregnated with a thermosetting resin to create a strip-shaped thermosetting resin-impregnated base material, and these are laminated to form a desired thickness. The laminated thermosetting resin-impregnated substrates are passed through a curing furnace to produce a strip-shaped laminate, which is then cut into a predetermined size to obtain a plurality of laminates.

A release sheet, which is a long processed material, is superimposed on the surface of the laminated thermosetting resin-impregnated base material that comes into contact with the conveyance means (for example, the side surface of the conveyance roller) before it is passed through the curing furnace. There is. This mold release sheet causes the thermosetting resin-impregnated base material passing through the curing furnace to stick to the conveyance means, resulting in the laminate becoming a defective product or the need to clean the conveyance means inside the curing furnace. It is used to avoid this inconvenience.

This release sheet is formed into a roll, and is sequentially pulled out from the roll and superimposed on the thermosetting resin-impregnated base material.

Conventionally, the tension of this release sheet has been applied only by the resistance of a device (such as a roller that rotates a roll of the release sheet) and its own weight, and there has been no means for adjusting the strength. For this reason, a predetermined or constant tension is not applied to the release sheet, and therefore, the tension of the release sheet overlaid on the thermosetting resin-impregnated base material is thick (and may vary. However, there is a problem in that the laminates produced differ depending on the time of production, and an improvement has been desired.

On the other hand, when this release sheet runs out, the entire process for manufacturing the laminate must be stopped and a new release sheet must be connected. In order to solve this problem, a release sheet feeding device having a fixed roller and a moving roller has been considered. This feeding device is one in which surplus release sheets are accumulated. While connecting the release sheets,
The moving roller rises and the release sheets accumulated in the feeding device are sent out and supplied. However, the release sheets fed from this feeding device are The tension may shift rapidly or at a very slow speed due to resistance, causing the tension to become so large or small that it is not predetermined or constant. For this reason, the produced laminates had problems such as many defective products, unstable quality, and breakage of the base material. Such problems are not limited to the method of manufacturing laminates, but apply to all methods in which long processed products are used.

[Purpose of the invention]

In view of the above circumstances, it is an object of the present invention to provide a feeding device that reduces product defects in the manufacturing process and improves quality stability.

[Disclosure of the invention]

In order to achieve the above object, the present invention includes a plurality of fixed rollers that are arranged in parallel with the axial direction being horizontal, and a movable roller that is arranged between the fixed rollers so as to be vertically movable. By guiding the long workpiece between the fixed roller and the moving roller so that the moving roller is interposed between the two, the long workpiece is once moved between the two fixed rollers by the weight of the moving roller. The material is suspended from one position and then raised to reach the other of the two fixed rollers to form a surplus part of the long material between the fixed roller and the movable roller, and the material is fed on the upstream side of this surplus part. The feeding device is configured to feed out the surplus portion when the feeding is stopped, and includes means for suppressing the rising of the moving roller when the moving roller rises, and a means for returning the risen moving roller to the original position. The gist of the present invention is a feeding device characterized by being provided with a return means.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1(a) shows a plan view of one embodiment of the feeding device according to the present invention, FIG. 1(bl) shows a front view of the embodiment, and FIG. 1(C) shows the Here is a side view of the embodiment. As shown in the figure, this feeding device includes a frame 1, two fixed rollers 2, 2 arranged in parallel at the upper end of the frame 1, It is arranged between these two fixed rollers 2, 2 so as to be parallel to them, and is movable in the vertical direction of the frame 1 (arrows in the figure indicate the movement stroke). A moving roller 3 is provided at both ends of the moving roller 3. The moving roller mounting unit 4 is pivotally supported by a moving roller mounting unit 4.4. It is slidably connected to a guide rod 5 provided on the side surface side, that is, on the end side of each roller. It is fixed near the upper end and near the lower end, and is arranged on both ends of the side surface of the frame 1. Two guide rods 5 are attached to each end of the frame 1, a total of four guide rods, and are movable. The roller 3 moves in the vertical direction of the frame 1 along the guide rods 5. Therefore, the movable roller 3 is prevented from being bent, distorted, twisted, etc.

This feeding device is used as shown in Fig. 1 (
As shown in C1, the long workpiece 6 is hung on one of the fixed rollers 2 and transferred to the moving roller 3. It passes through the other fixed roller 2 in sequence, and a surplus portion 20 is formed. This long processed material 6 is made into a roll, and a predetermined tension is applied to it by an unwinding machine or the like. The weight of the moving roller 3 is balanced with the tension applied to the long workpiece 6, and does not increase while the long workpiece 6 is continuously supplied to the feeding device.

For example, the supply of the long workpiece 6 may be connected to another long workpiece 7 made of the same material, and the long workpiece 6 may be permanently and continuously supplied. In this case, the end of the long workpiece 6 and the end of the other long workpiece 7 are connected by welding or the like using a repeater 8.

At this time, the long object to be processed 6 is fixed by the relay 88. In other words, the supply of the long workpiece 6 (such as unwinding when the long workpiece is rolled) is temporarily stopped on the feeding device side. However, the long workpiece 6 coming out of the feeding device remains in a state where it is continuously sent to the processing process side. Therefore, the moving roller 3 is pulled up and raised. The surplus portion 20 of the long workpiece 6 that is approximately twice the height of the raised moving roller 3 is supplied to the processing process side. This feeding device includes a means 9 for suppressing the upward movement of the moving roller 3 in order to be able to adjust the rising speed of the moving roller 3.
is provided. The means 9 for suppressing this rise is connected to the unit 4 at one of the moving roller attachments. The means 9 for suppressing the rise includes a sprocket 10 disposed at the upper part of the frame body 1, a sprocket 15 disposed at the lower part of the frame body 1, and a chain 11 wound around these.
and a brake 12 that suppresses the rotation of this chain 11. When the moving roller 3 is pulled up by the long workpiece 6, the chain 11 connected to the moving roller mounting unit 4.4 rotates between the sprockets 10.15. Sprockets 15.15 arranged at the bottom of the frame 1 are connected by a shaft 14,
When one sprocket 15 rotates, the other sprocket 15 also rotates. This prevents the movable roller 3 from being twisted and stopped within the frame 1 because its end portion moves up and down in a sliding pattern.

The means 9 for suppressing the rise uses a brake 12 to apply a certain resistance in the rotating direction of the chain 11, moderates the rising speed of the moving roller 3, and applies a predetermined tension to the long workpiece 6. is given to keep the supply amount constant. Therefore, it is desirable that the rotational resistance of the rotating shaft of the brake machine 12 is variable.

While the long workpiece 6 is being supplied from the feeding device, the connection of the long workpiece 6.7 to the medium machine 8 is completed, and the long workpiece 7 is transferred from the roll to the unwinding machine, etc. is used to supply the long workpiece 7 to a predetermined tension.

As mentioned above, by using the feeding device according to the present invention, a long workpiece is given a substantially uniform tension,
Moreover, it has the advantage that a fixed amount is continuously sent to the processing process. Therefore, when manufacturing laminates continuously, the glass cloth that serves as the base material of the laminate, the release sheet attached to the thermosetting resin-impregnated base material, etc. are held at a predetermined tension and in a constant amount. Since it is continuously supplied, defects in the laminate can be reduced and quality stability can be ensured.

Since the laminated plate can be manufactured without stopping the machine for manufacturing the laminated plate, the laminated plate is not left in a stopped state in a curing furnace or the like. This reduces defective losses.

As mentioned above, the moving roller 3 remains elevated.
is returned to the original position of the frame 1, that is, to the lower part of the frame 1, by means 13 for returning the moving roller 3 to its original position, which is provided in this feeding device. The feeding device is used when relaying the next long object 7 to be processed.

The means 13 for returning the movable roller 3 to its original position includes a frame 1
sprocket 15 provided at the bottom of the sprocket 10.
．． The movable roller 3 is lowered via the chain 11. The means 13 for returning to the original position includes an electric motor 16, a reducer 17 that increases the rotational torque of the electric motor 16 and reduces the rotational speed, and transfers the rotational torque and rotational speed output from the reducer 17 to the sprocket 15. The drive device 19 includes a clutch 18 for transmitting and disengaging the vehicle. In order to keep the tension of the long object 6 substantially constant, it is necessary to gradually lower the moving roller 3, and for this reason, a speed reducer 17 is connected to the electric motor 16. The moving roller 3 is the frame 1
When the motor 16 returns to its original position, the reduction gear 1
7 and attempts to lower the moving roller 3 1-
It is necessary to separate the rotational torque that causes the moving roller 3 to move freely up and down. For this reason, a clutch 18 is provided which is used to connect and disconnect the rotational torque.

For example, by using the above-mentioned feeding device in the production of laminates, it is possible to continuously supply a release sheet having a nearly constant tension or a glass cloth, which is the base material of the laminate, to the processing process. make it possible. Therefore, when a laminate is manufactured by the above manufacturing method, the loss of defective laminates is reduced, and the quality of the manufactured laminate is stable.

In addition, in the example, the fixed roller was made of two pieces of wood, but
There may be two or more. Furthermore, the number of moving rollers is not limited either. If the number of moving rollers is large, the amount of supply from the feeding device to the processing process when the repeater is used will also be large, which has the advantage of allowing sufficient relay time.

〔Effect of the invention〕

As seen above, the feeding device according to this invention is
A plurality of fixed rollers are arranged in parallel with the axial direction being horizontal, and a movable roller is arranged between the fixed rollers so as to be movable up and down, and the movable roller is interposed between the two fixed rollers. By guiding the long workpiece by the fixed roller and the moving roller, the long workpiece is once suspended from the position of one of the two fixed rollers by the weight of the moving roller, and then raised. A surplus portion of the long material is formed between the fixed roller and the movable roller by reaching the other of the two fixed rollers, and when feeding is stopped upstream of this surplus portion, this surplus portion is The feeding device is adapted to be fed out, and is provided with a means for suppressing the rising of the moving roller when it rises, and a means for returning the raised moving roller to its original position, so that it is easy to manufacture. This has the effect of reducing product defects in the process and improving quality stability.

[Brief explanation of the drawing]

FIG. 1 fat is a plan view of one embodiment of the feeding device according to the present invention, FIG. 1 (bl is a front view of the embodiment described above, and FIG.
C) is a side view of the embodiment.

Claims (3)

[Claims] (1) A plurality of fixed rollers are arranged in parallel with the axial direction being horizontal, and a movable roller is arranged between the fixed rollers so as to be movable up and down, and the movable roller is arranged between the two fixed rollers. By guiding the long workpiece between the fixed roller and the movable roller so that the long workpiece is once suspended from the position of one of the two fixed rollers by the weight of the movable roller, The elongated material is raised to the other of the two fixed rollers to form a surplus part between the fixed roller and the movable roller, and when the feeding is stopped upstream of this surplus part, this The feeding device is configured to feed out the surplus portion, and is provided with means for suppressing the rising of the moving roller when it rises, and means for returning the raised moving roller to its original position. A feeding device characterized by: (2) Guide rods are provided at both ends of the moving roller to guide its vertical movement, and each guide rod is slidably provided with a unit that pivotally supports the moving roller. One side of the unit includes sprockets disposed above and below the one unit, a chain that is hung over these sprockets and has both ends connected to the one unit, and a chain that allows the one unit to rise. The other unit is provided with a means for suppressing the lifting of the movable roller, and a brake for suppressing the rotation of the rotating chain. means for returning the movable roller to its original position, comprising: a chain that extends over these sprockets and is connected at both ends to the other unit; and a drive device that rotates the chain in a direction that lowers the movable roller. A feeding device according to claim 1, wherein the feeding device is provided with: (3) A patent claim in which the drive device is an electric motor, a reducer that converts the rotational speed and rotational torque of the electric motor into a predetermined rotational speed and rotational torque, and a clutch that transmits and disconnects the rotational speed and rotational torque. The feeding device according to item 2 within the scope of the invention.