JPH05221567A - Storing device for continuous belt-like material - Google Patents

Abstract

PURPOSE:To perform automatic delivery of a continuous belt-like material, fed while a winder is being stopped, during a time between a stored state and a running-out state. CONSTITUTION:In a storing device 110 provided with a hollow box type body having an intake part, a storing part, and a delivering part for a continuous belt-like material 102, intake of the continuous belt-like material is effected by means of a capstan roller 103 and a press roller 104 while the tension of the material is controlled. Delivery of the material to a winder, not shown in the figure, is effected in a state that the rapid change of the tension in the continuous belt-like material is relaxed and a double feed, a twist, and folding are prevented from occurring by means of rollers 107 and 111 for delivery and a stepped roller 108.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, when a winding machine is temporarily stopped in a manufacturing process of winding a continuous strip material (hereinafter referred to as "strip material") used for packing or the like around a core or the like. The present invention relates to a belt-shaped material storage device for continuing the operation of the entire process without stopping the stationary belt-shaped material manufacturing machine or excluding the same material outside the process.

[0002]

2. Description of the Related Art An extrusion molding machine is typically used to manufacture a band-shaped material made of a polyolefin resin as a raw material. The molding machine heats and pressurizes the resin to melt it into a uniform shape. Is continuously extruded in the form of a film through the die, slitted into a strip of a certain size, and wound into a core by a winding machine corresponding to each strip of material to be commercialized. In such a series of steps, the operation of the extruder is usually not stopped during normal operation. On the other hand, since it is commercialized as a regular-sized bobbin in the winding machine,
Each time the bobbin is replaced, the winder will be temporarily stopped.
Conventionally, the strip-shaped material manufactured during the stop time of the winding machine is provided with a space immediately before the winding machine and is randomly accumulated or equipped with a large number of step rollers to control the material without special transfer control. It had accumulated in a glyph. In the former case, when the winder is restarted, the strip-shaped material accumulated randomly is supplied to the winder while being manually arranged so as not to be twisted or broken. During this feeding operation, in order to process the randomly accumulated material and the continuously manufactured material, the winder is operated at a higher speed than the normal operation and is manually processed. On the other hand, in the latter case, the apparatus becomes large in size in order to sufficiently accumulate the material produced while the winder is stopped.

[0003]

In the method for producing a strip-shaped material, one extruder is directly connected with the same number of winders as the number of slit strip-shaped materials. Aircraft generally do not shut down. Therefore, as described above, the winder is temporarily stopped for bobbin replacement. For this reason, just before the winder, the strip-shaped material supplied during the stop time of the winder accumulates randomly. The complicated work of doing was necessary.

Further, the storage by the step roller has drawbacks such as requiring manual labor, a large size of the apparatus, and disadvantages such as quality.

The present invention has been made in view of the above-mentioned drawbacks of the conventional example, and an object of the present invention is to dispense the strip-shaped material supplied from the storage state to the empty state while the winding machine is stopped. A point is to provide a storage device for a band-shaped material that can automatically perform the above without any trouble.

[0006]

In order to solve the above problems and reach the object, a strip-shaped material storage device according to the present invention is provided at an intermediate position between a strip-shaped material producing device and a produced material winding device. A storage device for a band-shaped material, comprising a hollow box-shaped main body having a band-shaped material intake part, a storage part, and a discharge part, wherein the band-shaped material is controlled by controlling the tension of the material. And a storage section for gently storing the strip-shaped material drawn in by the intake section according to the physical properties of the strip-shaped material to be stored in the storage section, and the stored strip-shaped material is not entangled, twisted or bent. And a payout means for paying out.

[0007]

According to such a structure, in the storage device, the tension of the strip-shaped material to be taken in is made constant, so that the occurrence of entanglement, twisting and bending is prevented. Further, the impact force when the winding is restarted is alleviated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. <Outline> A belt-shaped material storage device described below is a belt-shaped material storage device in the preceding stage with respect to one winding machine, between a first-half manufacturing process using an extruder or the like and a winding process using a winding machine. One unit is provided, and there are no problems such as two sheets stacked, entangled, twisted or broken on the band-shaped material supplied while the winder is stopped, and the band-shaped material is stored neatly with a relatively small device, It is configured so that it can be dispensed, and acts as a material transfer path between the two steps when the winding machine is in operation and storage is not required.

First, a manufacturing process of a strip-shaped material used for packing, which is made of a polyolefin resin as a raw material, according to an embodiment of the present invention will be described.

FIG. 1 is an external view showing a band-shaped material manufacturing system according to this embodiment.

In FIG. 1, the strip-shaped materials 2-1 to 2-n (n is a natural number) supplied from the strip-shaped material manufacturing apparatus 1 (extruder, slitter, etc. are not shown) are stored in the storage device 10.
-1 to 10-n. Each storage device 10-1 to
The strip-shaped materials 2-1 to 2-n supplied into the 10-n are supplied to the winder through the step rollers 8 by driving the winders 20-1 to 20-n. Storage devices 10-1 to 10-n,
Band-shaped materials 2-1 to 2-n, winders 20-1 to 20-n
Are in a one-to-one correspondence as shown in FIG.

A product bobbin obtained by winding a strip-shaped material of a constant length is obtained by each winding machine. For example, the winder 20-1
In this case, the product bobbin indicated by 30 is obtained.

As shown in FIG. 1, the main part of the storage device 10 arranged in the above-mentioned strip-shaped material manufacturing process is composed of a material intake portion A, a storage portion B, and a dispensing portion C.

Next, the manufacturing process according to this embodiment will be specifically described.

FIG. 6 is a flow chart of the manufacturing process according to this embodiment. In this embodiment, as shown in FIG. 6, a product is produced through three steps of a molding step (step 1), a winding step (step 2), and a packaging step (step 3), and then shipped (step 4). .. Each step will be specifically described.

In step 1 (molding process), in the apparatus 1 for producing a strip-shaped material, the film is extruded into a film by an extruder and then divided into n equal parts by a slitter.
N strip-shaped materials are formed, and each strip-shaped material is taken by each corresponding take-up machine.

In step 2 (winding process), the storage device 1
The strip-shaped materials 2-1 to 2-n taken in from the manufacturing apparatus 1 by 0-1 to 10-n are discharged while being stored if necessary, and wound up by the winding machines 20-1 to 20-n.

In step 3 (packaging process), the product bobbins wound from the respective winding machines are bundled for shipping, and
Boxing is done.

When the packaging is performed in this manner, shipping (step 4) becomes possible.

Next, the storage device, which is a characteristic part of this embodiment, will be described.

The storage devices 10-1 to 10-n shown in FIG.
Has a configuration suitable when the strip-shaped materials 2-1 to 2-n are soft materials. In this embodiment, the strip materials 2-1 to 2-
A storage device having a configuration suitable when n is a hard material is also included.

First, storage devices 10-1 to 10-1 for soft materials.
0-n will be described in detail.

FIG. 2 is a front view showing the construction of the storage device for soft material according to this embodiment, and FIG. 3 is a side view of FIG.

In FIG. 2, the strip-shaped material 2-1 is taken in (supplied) to the storage device 10 by sandwiching the capstan roller 3 and the pressing roller 4 (from right to left in the figure). The capstan roller 3 is driven by a torque motor 3 '. With respect to the rotation characteristics of the torque motor 3 ′, when the tension applied to the strip-shaped material 2-1 is higher than the set torque on the basis of the set torque, the rotation speed is decreased, and when it is lowered, the rotation speed is increased. Can always be constant. Due to such characteristics, the storage device 10
It is possible to prevent the band-shaped material 2 from being loosened upstream (in the previous stage).

When the winding of one bobbin is completed, the winding machine 20-1 suspends its operation for bobbin replacement. At this time, the strip-shaped material 2-1 is constantly supplied from the manufacturing apparatus 1 to the storage device 10-1, so that the strip-shaped material 2-1 is stored in the storage device 10-1 from the bottom portion 17 to the upper side wall 15. ，
16 is gradually bent and laminated sequentially. Then, after the bobbin is exchanged, when the operation of the winding machine 20-1 is restarted, the strip-shaped material 2-1 which has been laminated inside the storage device 10-1 until now becomes an upward force due to the elastic force of the spring mechanism 19. The change in the balance of the downward force due to the increase in the tension of the strip-shaped material is supplied to the winder 20-1 via the step roller 8 that moves up and down.

The material is stored in the storage device 10-1 while the winding machine 20-1 is stopped. However, when the winding machine 20 starts restarting, the strip-shaped material 2-1 that has been stored is wound up. It is dispensed from the inside of the storage device by driving the machine 20. The material 2-1 to be dispensed is dispensed in an orderly manner without causing twisting, bending, etc. by stacking two sheets from the dispensing roller 7 and the slit 7a provided in the side wall 16.

The payout speed is determined by the torque motor 22-1 of the winding machine 20-1 (see FIG. 1), and the winding machine 20-
The core 21-1 set to 1 is the torque motor 22-1.
Driven by. Since the belt-shaped material from the manufacturing apparatus 1 for the belt-shaped material which is operated without stopping overlaps the belt-shaped material already stored in the storage device, the torque motor 22-1 is used until the belt-shaped material in the storage device becomes empty. Will be faster than during normal operation. This is for making the payout amount larger than the intake amount to the storage device 10-1. And the torque motor 22
-1 indicates the rotational speed of the core 21-1 when the strip-shaped material 2-1 is bridged in a straight line from the capstan roller 3 at the inlet of the storage device to the dispensing roller 7 as shown by the alternate long and short dash line in the figure. The production speed of the production apparatus 1 is controlled.

In the storage device 10-1, when the strip-shaped material 2-1 is straight and bridge-shaped as described above, the strip-shaped material 2 is formed.
Higher tension than -1 may be temporarily applied to -1. In order to buffer this tension, in this embodiment, the step roller 8 is arranged in the rear stage of the storage device 10-1. When the strip-shaped material 2-1 becomes a straight bridge, as shown by the one-dot chain line in FIG. 2, the step roller 8 moves downward while resisting the elastic force of the spring mechanism 19 due to the increase in the tension of the strip-shaped material. This prevents the belt-shaped material 2-1 being conveyed from being subjected to a sudden high tension.

Next, the storage device for hard materials will be described in detail.

FIG. 4 is a front view showing the construction of the storage device for hard materials according to this embodiment, and FIG. 5 is a side view of FIG. In the apparatus shown in FIG. 4, the strip material 10 that is a hard material is used.
2 is used for the explanation. Since the overall arrangement is the same as that of the manufacturing system shown in FIG. 1, description thereof will be omitted, and the storage device, which is a characteristic portion of the present embodiment, will be described in detail.

In FIG. 4, a storage device 110 for hard material is shown.
The material is stored in the following stage while the winder at the latter stage is stopped.
When the winder starts to restart, the stored strip material 1
02 is discharged from the storage device 110 by driving the winder. The material 102 to be dispensed is a roller pair 10 for dispensing.
Due to the configuration of 7, 111 and the slit, two sheets are stacked, and twisting, breaking, etc. do not occur, and they are dispensed in an orderly manner.

Since the dispensing speed is the same as that of the above-described soft manufacturing system, description thereof will be omitted. Particularly, in the hard manufacturing system, there is no storage in the storage device 110, and it is indicated by the one-dot chain line. When the strip-shaped material 102 has a straight bridge shape, the material 102 may be temporarily subjected to a higher tension than that during normal operation. Therefore, in order to buffer this tension, a spring mechanism 119 is provided and the step roller 108 is provided. The up-and-down movement of the sheet reduces the sudden change in the tension of the strip material. That is, in the case of a hard material, as shown in FIGS.
Is provided in contact with the upper surface of the strip-shaped material of the dispensed strip-shaped material 102 between the pair of delivery rollers 107 and 111 and the pair of rollers 112 and 114 provided substantially in parallel with these rollers. It is a mechanism that moves up and down by a change in the balance between the downward force due to its own weight (which is relieved by the spring mechanism) and the upward force due to the increase in the tension of the strip-shaped material.

In the present system, in the storage device 110, when the winding machine is temporarily stopped for bobbin exchange, the strip material 102 is constantly supplied from the manufacturing apparatus, and the strip material 102 is shown by a solid line. To be laminated. In such a case, the step roller 108 is moved downward by the spring mechanism 119 to the position 108 '. In this state, until the belt-shaped material in the storage device becomes empty, the torque motor of the winder becomes faster than in the normal operation, and the storage device 1
The amount of delivery is larger than the amount of delivery into 10, and in the torque motor, the belt-shaped material 102 is linearly bridged from the capstan roller 103 at the inlet of the storage device to the delivery roller 107 as shown by the dashed line in the figure. At that time, the rotation speed of the core of the winder is controlled to the manufacturing speed of the manufacturing apparatus.

Specifically, when the strip-shaped material 102 is not stacked in the storage device 110 and becomes empty and becomes a straight bridge, the step roller is caused by an increase in the tension of the strip-shaped material.
Move up from the position of 108 'while resisting its own weight,
It prevents the belt-shaped material between the rollers 103 and 107 from being subjected to a sudden high tension. In the present embodiment, a spring mechanism 119 is provided to control the position of the step roller 108 according to the degree of tension generated between the capstan roller 103 and the payout roller 107. Step roller 1
08 operates in the direction of the arrow indicated by D (down) as the tension applied to the strip-shaped material 102 decreases, and the same material 102 causes the capstan roller 103 and the dispensing roller 10 to move.
When a high tension such that a straight bridge is formed between 7 and 7, it operates in the direction of the arrow indicated by U. At this timing, the rotation speed of the core is controlled so as to match the manufacturing speed sent from the manufacturing apparatus to the storage device.

After that, the storage device 10 functions as a conveying path until the winding machine is stopped for the next bobbin exchange. As an example of setting, when one bobbin is 5,000 m, the manufacturing speed of the manufacturing apparatus 1 is 250 m / min, the bobbin replacement period is 20 minutes, and the bobbin replacement time is 10 sec maximum, the winding speed of the winder is 255 m / min. mi
When the speed is set to n, the storage device 110 becomes empty in about 8 minutes, so that there is time to spare until the next bobbin is replaced. The hard strip material 102 according to this embodiment has a width of 15.5 mm and a tensile strength.
For a polypropylene band of 120 kg or more, when the set torque is set to 2,000 g cm, the rotation speed of the torque motor 103 'changes between 490 and 510 rpm. Therefore, the belt-shaped material 102 does not loosen during operation. This also applies to the other storage devices 100-2 to 100-n. Further, it is necessary to prevent the bending radius from becoming less than 25 mm in order to prevent the polypropylene band from breaking during storage. In the present example, the bending radius of the laminated same material was 25 mm or more.

Various product widths of the band-shaped material 102 are about 5 to 20 mm
The width of the capstan roller 103 disposed at the inlet of the storage device, the pressing roller 104, and the dispensing roller 107 disposed at the outlet of the storage device is wider than the various product widths described above. The width of the storage part is shared, and the front wall plate 10b can be moved.
% It is better to set it wider.

As described above, in this embodiment,
To take in the strip-shaped material to the storage device, a capstan roller driven by a torque motor is installed at the inlet of the storage device, and the material is transferred between the first half manufacturing process such as an extruder and the inlet of the storage device. The storage device has a structure that it is taken into the storage device with a certain tension so that slack does not occur, and the capacity of the storage device is such that a space can be taken at the upper part of the storage part when storage is performed by stopping the winding machine for bobbin replacement. Therefore, the band-shaped material is gently bent at a natural bending radius without compression and laminated in order.

Further, when the belt-shaped material is passed through the main storage device at the start of operation, one end of the supplied material is manually sandwiched between the capstan roller and the pressing roller and the main storage is pulled out. A belt-shaped material conveying path can be obtained by passing it through a payout roller and a step roller at the exit of the apparatus and inserting it into a guide of a traverse 23-1 of a winder to be installed later.
Further, when the strip-shaped material is being dispensed, a dispense roller is provided at the exit portion, and the material can be dispensed in an orderly manner without stacking two sheets. In addition, the impact force at the time of switching to the normal speed after the completion of the dispensing of the same material during storage, that is, the high tension,
It is possible to provide a stepped roller at the outlet portion to buffer it by the operation of the roller.

Further, the strip-shaped material supplied from the first half manufacturing process such as an extruder is automatically stored at a set conveyance speed and balanced, and the material is stored. The storage is gentle due to the physical properties of the material. It is bent and laminated. The capacity of the storage part is controlled such that the material is not compressed when the material is stored by stopping the bobbin once, so that the material is not compressed. The width of the storage portion can be varied, and by setting the width slightly larger than the width of the band-shaped material to be stored, the air flow generated by movement such as bending of the material in the storage portion can flow without resistance. Dispensing from the storage part is performed in an orderly manner without disposing two sheets by disposing a dispensation roller that follows the movement of the material at the outlet part. The payout speed is slightly higher than the manufacturing speed of the extruder or the like until the storage device becomes empty, but the impact force at the time of switching to the normal speed can be buffered by the step roller.

Now, in the present invention, the capacity of the present storage device is set to a size such that the strip-shaped material produced during the time period during which the bobbin of the winding machine is stopped in normal operation is sufficiently stored. Further, the width of the same material may allow the front wall plate of the storage device to be variably movable in a direction orthogonal to the feed direction of the same material.

[0041]

As described above, according to this embodiment,
The following effects can be obtained. That is, (1) In the production of the strip-shaped material, the same material continuously produced during a time period when the bobbin of the winder is stopped and the like can be stored in a small space in an orderly manner without accumulating randomly. (2) The stored strip-shaped material is automatically dispensed to the winder, and troubles such as stacking two sheets, twisting, and breaking can be avoided. (3) The belt-shaped material can be conveyed in the process with a predetermined tension by disposing the torque motor and the step roller. (4) It is possible to automatically dispense the band-shaped material supplied from the storage state to the empty state while the winding machine is stopped without any trouble. (5) Material passing can be performed easily in a short time.

[Brief description of drawings]

FIG. 1 is an external view showing a manufacturing process of a strip-shaped material according to the present embodiment.

FIG. 2 is a front view showing the configuration of a storage device for soft material according to the present embodiment.

FIG. 3 is a side view of FIG.

FIG. 4 is a front view showing the configuration of a storage device for hard materials according to the present embodiment.

FIG. 5 is a side view of FIG.

FIG. 6 is a flowchart of a manufacturing process according to this embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus 2 Band-shaped material 3 Capstan roller 3'Torque motor 4 Pressing roller 7 Dispensing roller 8 Step roller 10-1 to 10-n Storage device 20-1 to 20-n Winder 31 Bobbin 22-1 Winding For torque motor

Claims (2)

[Claims] 1. A storage device for the same material, which is installed in the middle of the two devices in the manufacturing process of the same material, which comprises a continuous belt-shaped material manufacturing device and a manufactured same material winding device. A hollow box-shaped main body having a material intake portion, a storage portion, and a discharge portion, and an intake means for controlling the tension of the material fed from the manufacturing apparatus and drawing the material into the intake portion, A storage device for a continuous strip-shaped material, comprising: a dispensing device that dispenses from a storage device; and a device that buffers an impact force generated by a speed difference between a feeding speed and a winding speed of the fed material. 2. The main body comprises means for moving one of the corresponding front wall plate and rear wall plate to set the widthwise thickness of the continuous strip material. Storage device for continuous strip material.