JP2551711B2 - Automatic winding device for continuous strip material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the use of a strip-shaped material in a new core when winding a continuous strip-shaped material (hereinafter referred to as "strip-shaped material") made of a polyolefin resin used for packaging etc. The present invention relates to an automatic winding device for a continuous strip-shaped material which can start winding with the tip fixed and can be wound with a constant tension at this time.

[0002]

2. Description of the Related Art A strip material made of a polyolefin resin is typically manufactured by an extrusion molding machine. The molding machine heats and presses the above resin to plasticize and melt it, and continuously film it through a die of a certain shape. It is extruded into a strip shape, slit into strips of a certain size, and wound on a core by a winder corresponding to each strip material to be commercialized. In such a series of steps, the operation of the extruder is usually not stopped during normal operation. However, since the bobbin is commercialized as a regular-sized bobbin, the bobbin is temporarily stopped every time the bobbin is replaced. In the manufacturing process described above, conventionally, one end of the strip-shaped material is fixed to the outer peripheral surface of the core by a stapler or adhered by an adhesive tape before the bobbin is wound. In the above fixing or bonding, the tip of the band-shaped material is not fixed to the core enough to pull and wind the same at the time of starting, so at the time of starting, manually fix the band-shaped material or press the upper surface of the adhesive part. In this way, it was necessary to perform the complicated work of confirming that there was no deviation and entering into operation at normal operating speed. Further, when using the band-shaped material, there is a disadvantage that, in the mechanized packing work in recent years, the staple or the adhesive tape piece by the stapler may cause a failure of the packing machine or may be mixed as foreign matter in the packed product. There was a problem.

[0003]

As described above, the manufacturing process of the strip-shaped material is the same as the number of strip-shaped materials continuously supplied corresponding to one or more strip-shaped materials that are continuously supplied after being slit from the extruder. Ideally, a large number of winders should be directly connected so that the extruder is not stopped during normal operation. Further, after winding up, the operation had to be stopped each time in order to take out the product bobbin, which made automation impossible. Further, in order to obtain the product bobbin without fixing the winding start tip portion of the empty core to the empty core, the tip portion of the continuous strip-shaped material supplied as described above is manually attached to the outer peripheral surface of the empty core. It requires a complicated work of keeping it in a stopped state, confirming that at least one round is wound around the empty core, and then continuously winding it. In any case, full automation was impossible at all. .

Therefore, the present invention has been made in view of the above-mentioned problems, and a continuous strip material having a width smaller than that of an empty core is automatically wound in a uniform state in the outer peripheral direction of the empty core. At the same time, it is an object of the present invention to provide an automatic winding device for a continuous strip-shaped material, which is capable of fully automating all operations when obtaining a product bobbin without fixing the winding start tip portion to the empty core to the empty core.

[0005]

In order to solve the above-mentioned problems and to achieve the object, the present invention provides a continuous strip-shaped material having a width dimension smaller than the dimension in the longitudinal direction along the axis of the empty core. An automatic winding device for a continuous strip-shaped material that automatically winds in a uniform state in the outer peripheral direction of the empty core, wherein the tip portion of the continuous strip-shaped material to be supplied is clamped to the outer peripheral surface of the empty core. A pressing plate that winds at least one turn around the empty core in a stopped state of pressing, and presses the pressing means for canceling the pressed state at the tip portion; and the empty core. A yarn guide for controlling the supply position of the continuous strip-shaped material in the longitudinal direction along the axis of the guide so as to wind it in the uniform state, and a movement control for controlling the movement of the pressing plate and the yarn guide to the winding start position. Consists of means and Wherein the distal end portion while 押止 is characterized by comprising a winding means for winding the continuous material web in the air-core by and the 押止 means.

[0006]

According to this structure, the pressing means presses the tip of the supplied continuous strip-shaped material against the outer peripheral surface of the empty core held, and the winding means uses the pressing means to secure the continuous strip-shaped material. With the tip pressed, a continuous strip of material is wound around the empty core.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of an automatic winding device for a strip-shaped material according to the present invention will be described below with reference to the accompanying drawings. First, FIG. 7 is an external view showing a schematic configuration of a manufacturing process of a band-shaped material used for packing, for example, a polyolefin resin as a raw material. In this figure, first, an operator continuously supplies strip-shaped materials 2-1 to 2-n from a strip-shaped material manufacturing apparatus 1 (a mechanism such as an extruder and a slitter is not shown).
(E.g., n = 4 to 6) grip the tip portion of each one,
After passing through the storage devices 10-1 to 10-n, the lower side of the step roller 8 is passed, and the winders 200-1 to 200-20 are passed.
The state is set up to the portion of the strip-shaped material cutting blade 206 described later in 0-n. As described above, the strip-shaped materials 2-1 to 2-n are stored in the storage devices 10-1 to 10-1 as illustrated.
A buffering state is set within 0-n so as to absorb the difference in the feed rate of the band-shaped material. That is, the strip-shaped material 2-1 supplied into each of the storage devices 10-1 to 10-n.
.About.2-n are continuously supplied to the winder side with constant tension obtained by the vertical movement of the step roller 8 as the winders 200-1 to 200-n are driven. Storage devices 10-1 to 10-n,
Band-shaped materials 2-1 to 2-n, winding machines 200-1 to 200-
n is configured in a one-to-one correspondence as shown in FIG.
A product bobbin in which a strip-shaped material of a fixed length is wound by each winding machine is obtained. For example, the winding machine 200-
In the case of 1, the product bobbin 300 is obtained. Below, with respect to the main parts of the winding machine 200 in the above-described manufacturing process of the band-shaped material, a front view of the band-shaped material supply part of FIG. 1, a left side view of the winding part of FIG. 2, and a main part of FIG. FIG. 3 is an enlarged left side view, FIG. 4 is a front view showing an empty core supply section and a bobbin payout section, and the left side is shown by breaking out a main part of a delivery section of the empty core supply section. This will be described below with reference to FIG. 5, which is a front view, and FIG. 6, which is a front view of the labeling part.

The steps from the feeding of the strip-shaped material to the winding will be described with reference to FIG. In FIG. 1, the winding device 200
The strip material 2-1 is taken in (supplied) to the strip material 2-
1 through the measuring roller 201, the take-in position adjusting roller 202, the feeding auxiliary roller 203, the feeding roller 204, the yarn guide 205, and the band-shaped material cutting blade 206 provided at the tip of the yarn guide 205. A transfer path for the strip-shaped material 2-1 is constituted by.

The steps from the supply of the empty core 210 to the winding section will be described with reference to FIGS. In FIG. 4, when the empty core 210 is supplied to the winding section, when the empty core 210 is supplied onto the empty core guide 231, it moves to the right in FIG. 4 due to its own weight and moves to the right end vertical guide 231 ′ through the core feed pin. Stop on 232a. Core feed pins 232a, 2
The operation of 32b will be described with reference to FIG.

When the core feed pin 232a is opened while the core feed pin 232b is closed (the pin is protruding into the core guide), the empty core 210 is lowered onto the core feed pin 232b and the core feed pin 232a is closed. . At this time, the core feed pin 232a projects inside the core 210. By repeating this operation, the core 210 is moved downward by the radius of the core. The core 210 descended onto the core chute 233 rotates and is transferred onto the two core guide bars 234. The core 210 on the core guide bar 234 is sent to the left in FIG. 5 by the pusher 235, transferred onto the empty core holder 236, and stands by.

The label attaching portion will be described with reference to FIG.
On the product bobbin 300 wound on the core to a fixed length, a label for preventing unwinding is attached to the end of the band-shaped material 2-1. The label bobbin 302 is set on the label bobbin holder 302 ′, and the leading end of the tape-shaped label is fed to the label feeding roller 30.
The label transfer roller 304 is clamped through the sheet 3. The label feeding roller 303 rotates in response to a signal indicating the length of the strip-shaped material, which is shown separately, and the label transfer roller 304 moves rightward in FIG. 6 to be attracted to the negative pressure surface of the label holding plate 305 and then moved to its original position. Then, the cutting blade 306 protrudes to the front and cuts the label to a fixed size. Subsequently, the holding plate 305 descends to press the outer peripheral surface of the product bobbin 300 to apply a label, and the band-shaped material is cut by the band-shaped cutting blade 206 described later. The detection of the terminal position when the fixed length of the strip-shaped material has been wound will be described later.

Next, in FIG. 1, the measuring roller 201 is composed of a roller 201a and a pressing roller 201 ', and holds the continuously supplied strip-shaped material 2-1 as shown in FIG. It rotates as it is transported,
A standard for stopping the drive of the winding device by generating one pulse for each rotation to measure the length of the strip material and comparing the generated pulse with a set length set value of the strip material described later. Signal. Collars (not shown) are provided on both end surfaces of the intake position adjusting roller 202 rotatably arranged below the measuring roller 201, so that the feeding auxiliary roller pair 203, 203 'can be moved in the longitudinal direction. The feeding position is set so that the strip-shaped material does not come off.
Further, the feeding auxiliary roller pair 203, 203 ′ is
At the time of starting the winding operation, the strip-shaped material is sandwiched and rotated at the same peripheral speed as the peripheral speed of the empty core 210 preset in the winding section to prevent the strip-shaped material from shifting on the outer peripheral surface of the empty core 210. . Again, in FIG. 7, the yarn guide 205 that guides the strip-shaped material to the portion of the cutting blade 206 is located near the right end of the empty core 210 at the start of winding, and the pressing margin of the strip-shaped material is empty from the cutting blade 206. Core 21
Since it is in a state of being raised above 0, a pressing plate 213 described later
With the strip-shaped material being pressed from above onto the empty core 210, the empty core 210 is rotated once while supplying the strip-shaped material. Then, when the empty core 210 is driven by one rotation, the second winding of the strip-shaped material overlaps the first one winding while the second winding is
The winding is placed on the holding plate 213, and the winding start portion of the strip-shaped material is fixed on the outer peripheral surface of the empty core 210. After that, an operation of uniformly winding the strip-shaped material of a predetermined length along with the reciprocating movement of the yarn guide 205 along the longitudinal direction of the empty core 210 is performed, and the driving of the empty core 210 and the feeding auxiliary roller is stopped. Next, the band-shaped material is cut by the cutting blade 206, and the product bobbin 300 having the label attached to the winding end is obtained. Presser plate 21
Since the role of 3 is finished, the holding plate 213 will be described later.
Move to the parking position.

Subsequently, in order to obtain the next product bobbin 300, the rotational position of the pressing plate 213 driven by the torque motor 215 as described above is detected and the pressing plate detecting plate 21 is detected.
3 ', so that the pressing plate 213 is positioned on the pressing margin on the empty core 210. Subsequently, a scroll cam 208 is driven by a motor (not shown) driven via a one-way clutch, the position of the yarn guide 205 is detected by the limit switch 207b, and the winding start position is set. The yarn guide 205 is provided to evenly wind the strip-shaped material on the empty core 210 layer by layer, and the traverse guide 207 controls the movement of the scroll cam 208 which is rotationally driven in synchronization with the rotation of the empty core 210. Converted into reciprocating motion by the yarn guide 205
Is configured to move over the entire width of the empty core 210 in the width direction. The scroll cam 208 is appropriately replaced according to the width of the strip-shaped material and the empty core 210. The yarn guide 205 has a strip-shaped material pressing plate 209 which prevents the strip-shaped material from loosening or moving while the winding is stopped.
Is provided between the cutter and the feeding auxiliary roller pair 203, 203 '.

Next, the supply of the empty core to the winding section will be described with reference to FIGS. 2, 3 and 4. The empty core 210 standing by on the empty core holder 236 is transferred to the rotation axis of the winding shaft 211 by the moving base 237. Winding shaft 21
1 is provided with a driven side chuck 212 'having a structure that is also slidable in the axial direction opposite to a driving side chuck 212 that is slidable in the axial direction, and holds the end surface of the core from both sides.

The core supporting member of the driving side chuck 212 has a tapered tip, and has a structure in which the rotation axis of the core matches the winding axis when the core is pressed with a constant strength. The winding shaft 211 has a double structure of concentric shafts and has an outer shaft 211.
A and the inner shaft 211b are driven by the torque motor 215. The inner shaft 211b is connected to the air cylinder 211c via a coupling. The drive side chuck 212 is arranged at the left end of the inner shaft 211b. The chuck 21
The pressing plate 21 is attached to a part of the outer peripheral surface of No. 2 by a rotatable fixing pin A.
3 is attached. The pressing plate 213 moves integrally with the driving side chuck 212 via the fixing pin A. When the inner shaft 211b moves leftward in the figure by the air cylinder 211c, the attachment base point D of the holding plate 213 hits the left stopper B provided on the outer shaft 211a, and the holding plate 213 rotates counterclockwise with the fixed pin A as the rotation axis. Fall to. At this time chuck 2
Since the E point of 12 and the F point of the pressing plate 213 are connected via the spring 216, the F point of the pressing plate 213 moves to the left side of the fixing pin A, and the spring 216 causes the pressing plate 213 to move to the core by elastic stress. Pull it so that it is pressed against the outer peripheral surface. Further, when the chuck 212 is moved to the right side of the drawing, the holding plate 213 is horizontally pulled out from the core peripheral surface with the angle of pressing the core outer peripheral surface, and the point D is the right stopper C.
When it hits, it rotates clockwise and gets up. At this time, the point F of the pressing plate 213 can be moved to the right of the fixing pin A and can be kept in a raised state.

Thus, with the movement of the driving chuck 212 to the left side, the holding plate 213 holds the tip of the band-shaped material against the outer peripheral surface of the core, and with the movement of the driving side chuck 212 to the right side, it can be pulled out substantially horizontally from the product bobbin. It will be possible. The above operation is repeated every time a new core is replaced. The position where the pressing plate 213 presses the strip-shaped material is at the same position as the winding start reference point (about 25 mm from the core end surface), and the yarn guide 205 is returned by the rotation of the scroll cam 208 for positioning. The belt-shaped material is not displaced from the outer peripheral surface of the core because the belt-shaped material feeding auxiliary roller 203 is driven only when the winding is started. Also, as mentioned above, 2
The strip-shaped material of the winding holds the upper surface of the pressing plate 213, and the tip of the same material is fixed to the core, so that a normal winding speed is possible.

To mount the core 210 on the take-up shaft 211, first, the drive chuck 21 is disposed so as to face the take-up shaft.
2 and the supporting member that is tapered toward the tip of the driven chuck 212 ', the core 210 is sandwiched from both sides, so that the axial center of the core 210 is taken up.
Of the chucks 212 and 21
By sliding toward the center of the 2'winding shaft,
The core 210 is attached to the winding position of the winding shaft 211.

The winding drive is driven by the torque motor 215. Regarding the rotation characteristics of the torque motor 215, 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 decreases, and when the tension becomes lower, the rotation speed increases. It can be kept constant at all times and does not sag upstream of the product bobbin 300 during winding.

As an example of the setting, for a material having a polypropylene band width of 15.5 mm and a tensile strength of 120 kg or more, when the set torque is 2,000 g cm, the rotation speed of the torque motor 215 is 500 rpm, and the band-shaped material is When the torque due to the tension changes by 10%, the rotational speed of the torque motor 215 has a characteristic of changing between 490 and 510 rpm, so that the belt-shaped material does not become loose during winding. Further, the winding drive for discharging the product bobbin and supplying the core 210 is stopped by using the electromagnetic brake 214 arranged on the winding shaft 211, and the deviation of the stop position of the product bobbin is about 20 mm on the outer circumference of the bobbin. Can be within. The length of the standard length can be set by the operation panel of the winder main unit and is displayed digitally in parallel with the measured value.

When the set length is reached, it is confirmed with the limit switch 207a that the yarn guide 205 is about 25 mm inside the end face of the core, and the winding of one bobbin is stopped. The end of the strip-shaped material 2-1 is about 25 from the end face of the core.
The size of the product bobbin that is wound inside is due to the size of the label that is applied to prevent the band-shaped material from unraveling.
When the winding of one bobbin is completed and the rotation of the winding shaft is stopped, the label is held at the position of the yarn guide 205 by the photoelectric projector 305a and the reflecting mirror 205a which are arranged so as to face the yarn guide 205 and the label holding plate 305. The plate 305 is moved to attach a label to a position corresponding to the end of the strip-shaped material 2-1, and the cutting blade 206 of the strip-shaped material descends to separate the strip-shaped material 2-1 from the product bobbin 300.

When the above series of winding operations are completed, the winding chucks 212, 212 'are retracted to the left and right to move the product bobbin 3
The pinching of 00 is released. The released product bobbin 300 is transferred onto the product bobbin receiving base 301 provided on the moving base 237, and the moving base 237 moves onto the product bobbin take-out chute 309 to transfer the product bobbin onto the same chute and to the next step. Pay out.

The center of the winding shaft 211 of FIG.
The distance from the center of the empty core holder 236 arranged at the right end of 7 is set to be equal to the distance between the center of the winding shaft 211 and the center of the product bobbin transferred to the right end of the product bobbin take-out chute. The product bobbin can be dispensed and the empty core can be set to the center of the winding drive shaft in one operation. Here, as an example of the operation, when the standard length of the product bobbin is set to 3,000 m, the winding of the standard product 1 bobbin is completed in about 12 minutes. A series of automatic switching time such as mounting of the new core on the winding shaft, labeling, cutting of the band-shaped material, and dispensing of the product bobbin is 7 sec. During this automatic switching time of 7 sec, winding is stopped (7 sec once for 12 min), and the strip material produced during this period is stored in the storage device 10 described above (stored at a production speed of 250 m / min). The length of the strip material is about 30 m). If the torque due to the tension between the belt-shaped material of about 30 m stored in the storage device 10 and the belt-shaped material produced and supplied at 250 m / min without stopping is set to 2,000 g cm, the winding speed is 2 min / min.
It becomes 55 m, and the strip-shaped material in the storage device 10 is fed out in about 6 minutes, and a sufficient time margin is secured for the next switching.
After that, the winding operation is automatically repeated, and the manufacturing process can be operated without stopping.

Here, a series of operations relating to the automatic winding device of the present embodiment will be briefly described with reference to the flow chart of FIG. The empty core 210, through the empty core guide 231,
The product is transferred to the product bobbin receiving base 301 by the moving base 237. In the product bobbin cradle 301, the empty core is held by the driving-side chuck 212 and the driven-side chuck 212 ', and the rotation center of the core coincides with the rotation center of winding. In this way, the supply of empty cores is completed (step 101). Next, in order to stop the tip of the strip-shaped material at a predetermined position on the outer peripheral surface of the empty core, positioning is performed by the scroll cam 208 and the yarn guide 205, and the pressing plate 2 is pressed.
The front end of the belt is pressed by 13 (step 10).
3).

Next, the winding shaft 211 of the core 210 is mounted, and the winding by the torque motor 215 is started (step 105). During this winding operation,
The rotation speed is controlled so that the torque motor 215 makes the tension applied to the strip-shaped material constant. The amount of winding onto the empty core is set in advance as the standard length, and in the process of winding the standard length, just before reaching the standard length, the length of the predetermined length (A) When the winding is completed (step 107), the preparatory operation for attaching the label is started (step 1).
09). For example, when the standard length is about 3,000m,
The length to start the correction winding is set to approximately 2,950 m.

Next, the band-shaped material is cut by the cutting blade 206, and the material is separated into the supply side and the bobbin side (step 111). Product bobbin 30 obtained by this cutting
A label supplied from the label bobbin 302 is attached to the end of the strip-shaped material on the 0 side to prevent unwinding (step 113).

The product bobbin 300 is moved to the movable mount 23.
The product is transferred to the bobbin take-out chute 309 by 7 and discharged (step 115). As described above, according to this embodiment, the following effects can be obtained. (1) In the manufacturing process of the band-shaped material, the leading edge of the band-shaped material can be started to be wound on the outer peripheral surface of the winding core without using a fixing tool.

(2) The take-up shaft can be driven by a torque motor to take up the set constant length with a constant tension. (3) Operations such as supply of empty cores, replacement of bobbins, labeling and dispensing of bobbins can be automatically performed in a short time. (4) The steps (2) and (3) can be performed more smoothly by configuring the automatic winding device and the storage device 10 in combination.

In the above-mentioned embodiment, the number of strip-shaped materials supplied from the strip-shaped material manufacturing apparatus 1 is shown in the range of n = 4 to 6, but the present invention is not limited to this. Of course, it can be applied to the case of n ≦ 3 or n ≧ 7.

[0029]

As described above, according to the present invention,
A product bobbin that can automatically wind a continuous strip of material with a smaller width than the empty core in the outer peripheral direction of the empty core in a uniform state, and does not fix the winding start tip of the empty core to the empty core. It is possible to provide an automatic winding device for a continuous strip-shaped material capable of fully automating all the operations for obtaining.

[Brief description of drawings]

FIG. 1 is a front view showing a transfer path for a strip-shaped material.

FIG. 2 is a side view of a winding unit.

3 is a side view of the chuck section and the holding plate section of FIG. 2. FIG.

FIG. 4 is a front view of a core supply unit.

5 is a side view of the core feeding unit of FIG. 4. FIG.

FIG. 6 is a front view of a label sticking portion.

FIG. 7 is an external view showing a manufacturing process of the strip-shaped material according to the present embodiment.

FIG. 8 is a flow chart for explaining a series of operations according to the automatic winding device of the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus 2 Storage material 200 Storage device 200 Winding device 201 Measuring roller 203 Feeding auxiliary roller 204 Feeding roller 205 Yarn guide 206 Strip material cutting blade 207 Traverse guide 208 Scroll cam 210 Empty core 211 Winding shaft 212 Chuck 213 Holding plate 214 Electromagnetic brake 215 Torque motor 231 Empty core guide 232a Core feed pin 233 Core chute 235 Pusher 236 Empty core holder 237 Moving stand 300 Product bobbin 301 Product bobbin holder 302 Label bobbin 304 Label transfer roller 305 Label holding plate 306 Label cutting blade 309 Product Bobbin take-out shoot

Continuation of the front page (56) Reference JP-A-1-64957 (JP, A) JP-A-1-252446 (JP, A) JP-A-2-75556 (JP, A) JP-A-2-231363 (JP , A) JP-A-3-249066 (JP, A) JP-A-4-75949 (JP, A)

Claims (3)

(57) [Claims] 1. An automatic winding of a continuous strip-shaped material, in which a continuous strip-shaped material having a smaller width dimension than the dimension in the longitudinal direction along the axis of the empty core is automatically wound in a uniform state in the outer peripheral direction of the empty core. A device, wherein the tip end portion of the continuous strip material to be supplied is pressed against the outer peripheral surface of the empty core in a clamped state, and at least one round is wound around the empty core, A pressing means for releasing the pressing state, a pressing plate for pressing the tip portion, and a uniform position by controlling the supply position of the continuous strip-shaped material in the longitudinal direction along the axis of the empty core. And a movement control means for controlling movement of each of the pressing plate and the yarn guide to the winding start position, and in a state in which the tip portion is stopped by the pressing means, The empty core Automatic winding device of the continuous strip material, characterized by comprising a winding means for winding the continuous strip material. 2. A label holding plate holding a label, and a label attaching means for moving the label holding plate to a predetermined label attaching position to attach a label to an end portion of the continuous strip-shaped material. The automatic winding device for a continuous strip-shaped material according to claim 1. 3. A supply means for supplying the empty core to a position where the empty core is held, and a product bobbin obtained by applying a label to the end portion of the continuous strip-shaped material by the label applying means, on the empty core. The automatic winding device for a continuous strip-shaped material according to claim 1 or 2, further comprising: a replacement means for automatically replacing the product bobbin, and a dispensing means for automatically dispensing the product bobbin to the outside of the device.