JP7162473B2 - Releasing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unrolling device that feeds a fabric from a raw fabric roll around which the fabric is wound and supplies it to a post-process.

2. Description of the Related Art Conventionally, a cloth spreading device has been used to prepare cloth for cutting with a cutting device. The fabric spreading device unrolls the fabric from a raw fabric roll on which a sheet-like fabric is wound and stacks the fabric in a flat state (see Patent Documents 1 and 2, for example). Patent Literature 1 discloses a configuration in which a raw fabric roll (cloth) is supported on a central axis extending to both sides, and the cloth is fed while being pulled by a feeding roller that hits the surface of the unwound cloth. . Patent Literature 1 discloses a function of automatically placing a weight on the top portion of the spread fabric. Patent Literature 2 discloses a configuration in which an original fabric roll is placed on an original fabric receiving belt that is V-shaped when viewed from the side, and is mainly spread on the middle surface. This configuration has a fabric unrolling device that unrolls the fabric while delivering it, and a raw fabric delivery device that delivers the fabric onto a spreading table. Patent Literature 2 also discloses automation when introducing the fabric unrolled by the unrolling device into the raw fabric feeding device.

A technique for automatically detecting the winding direction and the leading end of a sheet-like material for a roll similar to the original roll has been disclosed (see, for example, Patent Document 3). The control of US Pat. No. 5,900,001 keeps the ends of thin polyethylene sheet rolls, called polyliners, in a constant position when they are placed in the roll storage mechanism of the polyliner supply center. It is stated that the purpose of this control is to easily and automatically set the roll on a winding machine that winds the polyliner while interposing it between belt-shaped materials such as unvulcanized rubber sheets.

JP-A-1-187175 JP-A-6-316369 JP-A-2-291340

In recent years, the target fabrics to be cut by the cutting equipment are expanding not only to fabrics for the apparel field, but also to materials for interiors and automobile interior parts. Some fabrics and materials that serve as base materials deteriorate in quality when the load increases due to strong pulling or pressing.

Patent Document 1 does not use a drive source for rotating the original fabric roll, and pulls the fabric so that it is delivered by a delivery roller that contacts the surface of the fabric, which places a burden on the fabric. In addition, spreading the fed dough without releasing it may cause the dough to curl or the like. Furthermore, the operation of supporting the raw fabric roll and feeding the fabric to the feeding roller is not automated.

In the configuration of Patent Document 2, since the fabric is unrolled by the unrolling device and then fed out, curling or the like does not occur in the fabric. However, since the fabric is pulled out while the original fabric roll is in contact with the fabric receiving belt under the weight of the fabric roll, it is inevitable that a burden is applied to the fabric. With the control disclosed in Patent Document 3, the poly liner simply hangs from the roll, so it is believed that no burden is placed on the poly liner. However, nothing is disclosed about the process of feeding the leading end of the polyliner to the post-process after the roll is set on the winder, and it is unclear whether or not the polyliner is burdened.

SUMMARY OF THE INVENTION An object of the present invention is to provide an unrolling device capable of automating the operation of supporting a raw fabric roll and feeding the fabric to a post-process without putting a burden on the fabric.

The present invention relates to an unraveling device in which a raw fabric roll around which a fabric is wound is supported by the core so as to provide a space around the outer periphery, and the fabric fed out from the raw fabric roll is supplied to a post-process,
A rotation support mechanism that supports the core of the raw fabric roll and can be rotated;
a measurement sensor capable of measuring the roll diameter of the original fabric roll supported by the rotation support mechanism;
A belt is stretched from the base end side provided at a distance from the original fabric roll on the post-process side to the free end side swinging around the base end side, and below the original fabric roll supported by the rotation support mechanism. The feeding belt mechanism can switch between an advanced state in which the free end side advances to the belt and the fabric fed from the original fabric roll can be conveyed to the base end side by the belt, or a retracted state in which the free end side retreats from below the original fabric roll. When,
When the raw fabric roll is supported by the rotation support mechanism, based on the roll diameter measured by the measurement sensor, control is performed so that the belt of the delivery belt mechanism is spaced from the outer circumference below the raw fabric roll at a predetermined interval or more, and control means for switching a delivery belt mechanism to an advanced state and conveying the fabric delivered from the original fabric roll to the base end side by the belt.

Further, the control means of the present invention switches a swinging angle, which is an angle at which the free end side of the delivery belt mechanism swings around the base end side, according to a range of a plurality of predetermined steps for the roll diameter. and controlling the distance between the belt and the outer periphery of the original fabric roll to be within a predetermined range.

Further, according to the present invention, the apparatus is arranged below the rotation support mechanism, is capable of moving up and down under the control of the control means in the retracted state of the delivery belt mechanism, and can place the original fabric roll in the lowered position, further comprising a mounting table that, when the original fabric roll is placed and raised, allows the core to be supported by the rotation support mechanism at the elevated position, and moves away from the original fabric roll and descends when the core is supported,
The control means is characterized in that the raised position of the mounting table is determined according to the diameter of the roll.

Further, in the present invention, the core of the raw fabric roll has a hollow tubular shape at least at both ends in the axial direction,
The rotation support mechanism is
On both sides of the core in the axial direction, plugs having a taper with a smaller diameter on the distal side and a larger diameter on the proximal side than the inner diameter of the end of the core are provided,
The raw fabric roll is supported by narrowing the gap between both stoppers from a state larger than the length of the core.

Further, the present invention further includes a leading edge detection sensor that detects the leading edge of the material unwound from the original fabric roll below the original fabric roll supported by the rotation support mechanism,
The control means controls the rotation support mechanism and the feeding belt mechanism based on the detection result of the leading end detection sensor and the roll diameter measured by the measurement sensor, and feeds the material roll supported by the rotation support mechanism. It is characterized in that control is performed so that the front end of the fabric is received by the belt in the advanced state and conveyed to the base end side.

Further, the control means of the present invention sends out the leading edge of the cloth to the post-process side in the advanced state, switches the feeding belt mechanism to the retracted state, and moves the base end of the raw fabric roll and the feeding belt mechanism to the retracted state. It is characterized in that the dough is controlled to be supplied to the post-process from the base end side while the dough is released from the side.

According to the present invention, the raw fabric roll is supported by the core, and the fabric is fed by the feeding belt mechanism and the rotating drive of the raw fabric roll by the rotation support mechanism, so that the fabric is not burdened. The delivery belt mechanism can switch between an advanced state and a retracted state. On the free end side in the advanced state, the belt advances below the original fabric roll under control based on the roll diameter by the control means, and is spaced from the outer circumference by a predetermined distance or more. The belt can automatically perform the operation of receiving the fabric hanging from the original roll without touching the outer periphery of the original roll and feeding it to the post-process.

Further, according to the present invention, the swinging angle of the delivery belt mechanism in the advanced state is switched according to a plurality of stages of the roll diameter of the original fabric roll. The distance between the belt and the outer circumference of the original fabric roll is controlled to be within a predetermined range. By controlling the gap, the gap is not excessively large, and even if the fabric hanging from the original fabric roll has a curl, the tip can be received and the fabric can be easily conveyed to the base end side.

Further, according to the present invention, when the original fabric roll is placed on the mounting table at the lowered position, it can be automatically raised to the raised position according to the diameter of the roll and supported by the rotation support mechanism.

Further, according to the present invention, since both ends of the hollow tubular core of the original fabric roll are sandwiched from both sides in the axial direction by the plugs having tapers, the cloth wound around the core is supported so as not to be burdened. can be done.

Further, according to the present invention, when the original fabric roll is supported by the rotation support mechanism, the leading edge detection sensor detects the leading edge of the fabric. The front end of the material fed from the original fabric roll is received by the belt of the feeding belt mechanism in the advanced state, conveyed to the base end side, and automatically fed.

Further, according to the present invention, the fabric fed from the original fabric roll is released between the original fabric roll and the base end side of the delivery belt mechanism in the retracted state, and then supplied to the post-process. can be controlled automatically.

FIG. 1 is a left side view showing a schematic configuration of an unraveling device 1 that is an embodiment of the present invention. FIG. 2 is a left side view showing changes in swing angle of the delivery belt mechanism 6 of FIG. FIG. 3 is a simplified left side view showing one stage of operation of the unrolling device 1 of FIG. FIG. 4 is a simplified left side view showing one stage of operation of the unrolling device 1 of FIG. FIG. 5 is a simplified left side view showing one stage of operation of the unrolling device 1 of FIG. FIG. 6 is a simplified left side view showing one stage of operation of the unrolling device 1 of FIG. FIG. 7 is a simplified left side view showing one stage of operation of the unrolling device 1 of FIG. 8 is a front view showing a schematic configuration of the unraveling device 1 of FIG. 1. FIG. 9A and 9B are a front view, a bottom view, and a right side view showing a schematic configuration of a moving mechanism 15 for the stopper 4b on the moving side used in the unraveling device 1 of FIG.

1 to 9, a schematic configuration of an unraveling device 1 according to an embodiment of the present invention and each stage of operation will be described below. The side of the unraveling device 1 facing the worker during operation is the front side. For convenience of explanation, the left side view shows a state in which the left side plate 7a of the frame 7 is removed. In addition, parts that are not illustrated in the drawings to be described may be referred to by attaching reference numerals that are illustrated in other drawings.

FIG. 1 shows a schematic configuration of a dewaxing device 1 that is an embodiment of the present invention. The unraveling device 1 of the present embodiment is used to unwrap the fabric 2 from the raw fabric roll 3 and supply it to a post-process device. A spreading device for preparing the fabric 2 to be cut by a cutting machine or a cutting device having a cutting table with a conveying function can be used as the post-process device.

A raw fabric roll 3 around which a fabric 2 is wound around a core 3a is supported by the core 3a so as to provide a space around the outer periphery. The fabric 2 fed out from the raw fabric roll 3 is fed to a post-process after being unrolled. The unraveling device 1 includes a rotation support mechanism 4 , a tip detection sensor 5 , a delivery belt mechanism 6 and control means 10 . The rotation support mechanism 4 supports the core 3a of the original fabric roll 3 and can be driven to rotate. The leading end detection sensor 5 is provided below the raw fabric roll 3 supported by the rotation support mechanism 4 and detects the leading end of the fabric 2 fed out from the raw fabric roll 3 . In the delivery belt mechanism 6, a belt 6c is stretched from a base end side 6a provided at a distance from the original fabric roll 3 on the post-process side to a free end side 6b swinging around the base end side 6a. The free end side 6b is rotatably supported at the tip of a swing frame 6d that swings around the base end side 6a. The belt 6c can be switched between an advanced state and a retracted state under the control of the control means 10. FIG. In the advanced state, the free end side 6b advances below the original fabric roll 3 supported by the rotation support mechanism 4, and the fabric 2 fed out from the original fabric roll 3 can be conveyed to the base end side 6a by the belt 6c. be. In the retracted state, the free end side 6b is retracted from below the original fabric roll 3, and the cloth 2 can be released between the original fabric roll 3 and the base end side 6a. In FIG. 1, the belt 6c of the delivery belt mechanism 6 is in a retracted state. The belt 6c is driven by rotating the proximal end 6a with a drive motor 6e. The driving force is transmitted between the driving motor 6e and the proximal end 6a via pulleys and belts.

The main parts of the debunking device 1 are housed within the frame 7 . The frame 7 is mounted on the mount 8 and has a moving roller 7c at the bottom. The pedestal 8 has a track 9 extending in a direction perpendicular to the plane of the paper. The moving rollers 7c are guided on tracks 9. As shown in FIG.

The unwaxing device 1 further includes a mounting table 11 and a measurement sensor 17 . The mounting table 11 is arranged below the rotation support mechanism 4 and can be moved up and down under the control of the control means 10 while the delivery belt mechanism 6 is retracted. FIG. 1 shows a state where the mounting table 11 is in the lowered position. The mounting table 11 at the lowered position can mount the original fabric roll 3 as indicated by the two-dot chain line. When the original fabric roll 3 is placed on the mounting table 11 at the lowered position, the original fabric roll 3 can be raised together with the mounting table 11 . At the elevated position of the mounting table 11 , the core 3 a of the original fabric roll 3 can be supported by the rotation support mechanism 4 . When the core 3a is supported by the rotation support mechanism 4, the mounting table 11 is separated from the original fabric roll 3 and lowered. Mounting rollers 11 a are arranged on the surface of the mounting table 11 . The raw fabric roll 3 is mounted on the mounting roller 11a and can be easily moved in the direction perpendicular to the paper surface. The movement of the original fabric roll 3 in the direction perpendicular to the plane of the paper is required when the plugs 4a and 4b are attached from both sides of the core 3a by the rotation support mechanism 4, as will be described later. Since the placement roller 11a does not roll and rub against the surface of the placement table 11 when the raw fabric roll 3 moves, the cloth 2 on the placement portion is not burdened. Note that the tip detection sensor 5 is also provided on the mounting table 11 .

The unraveling device 1 has an elevating mechanism 12 and a guide mechanism 13 for elevating the mounting table 11 . The lifting mechanism 12 includes a chain 12a and sprockets 12b and 12c on which the chain 12a is vertically hung. The guide mechanism 13 includes a guide 13a extending vertically, a connecting member 13b guided along the guide 13a and connected to the mounting table 11 and the chain 12a, and stoppers 13c and 13d provided vertically. The lowered position of the mounting table 11 is determined by the contact of the coupling member 13b with the lower stopper 13d. The upper stopper 13 c determines the upper limit position of the mounting table 11 .

The measurement sensor 17 is provided above the center of the original fabric roll 3 placed on the mounting table 11 and measures the distance to the outer circumference of the original fabric roll 3 . The measurement result of the measurement sensor 17 is input to the control means 10 . Since the distance to the surface of the mounting table 11 in the lowered position is a constant Zm, when the distance Z1 to the upper end of the outer periphery of the original fabric roll 3 mounted on the mounting table 11 in the lowered position is measured, the roll diameter D is D = Zm-Z1. The raised position of the mounting table 11 is a position where the core 3a of the placed original fabric roll 3 can be supported by the rotation support mechanism 4, and changes according to the roll diameter D. FIG. Assuming that the distance from the measurement sensor 17 to the core 3a at the raised position is Zn, the lift amount L required to raise the mounting table 11 from the lowered position to the raised position is L=Z1+D/2-Zn. The control means 10 determines the raised position of the mounting table 11 according to the roll diameter D measured by the measurement sensor 17 .

The delivery belt mechanism 6 has a swinging portion 14 . The rocking portion 14 includes a rocking motor 14a, a rocking arm 14b, and a connecting arm 14c. The free end of the swing arm 14b swings about the shaft 14d with the shaft 14d as the base end, and the swing angle of the swing arm 14b is the swing angle of the belt 6c. The swing motor 14a and the end of the shaft 14d are supported on the post-process side of the frame 7 via a mounting plate 14e. As will be described later with reference to FIG. 8, the swing arm 14b and the connecting arm 14c are provided on the left side plate 7a and the right side plate 7b, respectively. The shaft 14d connects the base end sides of the rocking arms 14b on both sides. A driving force for swinging the swing arm 14b is transmitted from the swing motor 14a through a pulley and a belt. A free end side of the swing arm 14b is connected to one end of the connecting arm 14c. The other end of the connecting arm 14c is connected to the swing frame 6d.

When the swinging motor 14a is rotated clockwise from the retracted state shown in FIG. can be switched to The swinging portion 14 uses a swinging motor 14a as a driving source to change the swinging angle between the retracted state and the advanced state of the belt 6c in multiple stages. The control means 10 changes the swinging angle according to the size of the roll diameter D, and operates the delivery belt mechanism 6 so that the space below the belt 6c and the original fabric roll 3 is at least a predetermined distance from the outer periphery. Control. The configuration of the swinging portion 14 as described above is an example, and other configurations may be used as long as the free end side 6b of the belt 6c can be swung around the base end side 6a.

As will be described later with reference to FIG. 8, the rotation support mechanism 4 includes a fixed-side plug 4a that is rotationally driven around the axis without moving in the axial direction perpendicular to the paper surface, and a movable-side plug 4b that moves in the axial direction. have The stopper 4b on the moving side is supported by an arm 4c, and the arm 4c is moved by a moving mechanism 15. As shown in FIG. A description of the moving mechanism 15 will be given later with reference to FIG. The original fabric roll 3 supported by the rotation support mechanism 4 is rotationally driven by the rotation mechanism 16 . The rotation mechanism 16 includes a motor 16a as a drive source and a belt 16b that transmits the rotation of the motor 16a to the fixed-side plug 4a via a pulley.

Between the feeding belt mechanism 6 in the retracted state and the original fabric roll 3, the fabric 2 can be released, and the release state is monitored by the release sensor 18.例文帳に追加The release sensor 18 detects the distance to the surface of the fabric 2 to be released, and inputs the detection result to the control means 10 . The fabric 2 delivered from the base end 6a of the delivery belt mechanism 6 to the post-process side is imaged by a camera 19 installed on the post-process side, and the imaging result is also input to the control means 10. If it is not necessary to release the fabric 2, the delivery belt mechanism 6 may be set in the advanced state and the fabric 2 may be continued to be conveyed by the belt 6c.

The tip detection sensor 5, the measurement sensor 17, and the radiation sensor 18 receive reflected light at a certain angle with respect to the emitted light, and use a reflective distance sensor that calculates the distance to the target from the deviation of the light receiving position. there is Since the tip detection sensor 5 may detect the presence or absence of the cloth 2, a sensor that detects the presence or absence of transmitted light or a sensor that detects the cloth 2 by contact may be used. The measurement sensor 17 may be provided on the side of the raw fabric roll 3 and may be of a vertically movable type to measure the maximum diameter portion. However, the measurement sensor 17 provided directly above the original fabric roll 3 as in this embodiment can be fixed and can measure the maximum diameter portion. Further, in place of the reflection type measurement sensor 17, a measurement sensor that captures an image of the original fabric roll 3 from above and measures the roll diameter D as the width between the front end side and the rear end side can be used. Moreover, the measurement sensor for imaging can be arranged on the side of the raw fabric roll 3, and the roll diameter D can be measured as the width between the upper end side and the lower end side.

FIG. 2 shows an example of control for switching the swinging angle of the belt 6c according to a plurality of predetermined ranges for the roll diameter D of the raw fabric roll 3. FIG. The standby state of the delivery belt mechanism 6 is indicated by a dashed line, and the advanced state corresponding to the assumed maximum range of roll diameter D1 and the assumed minimum range of roll diameter D2 is indicated by a solid line and a chain double-dashed line, respectively. The swing from the standby state to the advanced state according to the roll diameters D1 and D2 causes a position change from the free end side 6b0 to the free end sides 6b1 and 6b2. The roll diameters D1 and D2 are, for example, 600 to 700 mm and 200 mm or less, and are divided into ranges of 500 to 600 mm, 400 to 500 mm, 300 to 400 mm, and 200 to 300 mm. The swing angles .theta.1 and .theta.2 from the standby state in the advanced state of the belt 6c with respect to the roll diameters D1 and D2 are, for example, about 35 degrees and about 60 degrees, and the swing angles .phi.1 and .phi.2 of the swing arm 14b are , about 35 degrees, and about 65 degrees. In this way, if the roll diameter D is controlled so as to change the swing angle in a plurality of steps of 100 mm each, the distances δ1 and δ2 between the belt 6c and the outer circumference of the original fabric roll 3 can be set within a certain range, for example, 30 mm. As described above, the distance can be controlled within a range of less than 80 mm. Even when the roll diameter is switched between the range of 200 to 700 mm and the roll diameter of 200 mm or less, the belt 6c is advanced below the raw fabric roll 3, and the distance from the outer circumference is set in advance to about 30 mm. It can be controlled to open more. Control of the swing angle based on the roll diameter D as described above may be performed by switching in a plurality of steps according to a table or the like prepared in advance according to the properties of the dough 2 . An electric cylinder or a multi-stroke fluid pressure cylinder can also be used as a drive source for the swinging portion 14 . Further, the swing angle may be controlled steplessly so that the gap between the outer circumference of the raw fabric roll 3 and the belt 6c is constant.

As for the advancing state of the delivery belt mechanism 6, the free end side 6b of the belt 6c should be below the vertical line 3v extending downward from the left end of the original fabric roll 3 on the core 3a side. If the fabric 2 hangs down from the left end of the raw fabric roll 3 without bending much, the tip can be received by the belt 6c. Since the belt 6c in such an advanced state interferes with the vertical movement of the original fabric roll 3 placed on the mounting table 11, the belt 6c does not hang on the vertical line 3v in the retracted state of the delivery belt mechanism 6. keep it away from you.

3A shows an operation stage in which the mounting table 11 is lifted by the lift amount L, and in FIG. , and the steps of detecting the leading edge of the fabric 2 are respectively shown. The raw fabric roll 3 can be easily placed on the placement table 11 at the lowered position even manually. If a robot device or the like is used, the carrying-in of the raw fabric roll 3 can also be automated.

In FIG. 3(b), the delivery belt mechanism 6 is in the retracted state, and the leading edge detection sensor 5 provided on the mounting table 11 is detected at a predetermined interval ΔZ downward from the lower end of the outer circumference of the original fabric roll 3. The passing of the leading edge of the material 2 is detected. From the state in which the leading edge of the fabric 2 extends to the right of the leading edge detection sensor 5 in the figure, the original fabric roll 3 is rotated clockwise, and the fabric 2 is brought into contact with the leading edge detection sensor 5 or in a non-contact state close to the leading edge detection sensor 5. so as to be wound on the original fabric roll 3. The point at which the detection of the material 2 is switched to non-detection is detected as the passing of the leading edge. Even if the leading edge of the fabric 2 is on the left side of the leading edge detection sensor 5 when the original fabric roll 3 starts rotating, if it passes the upper edge by clockwise rotation, the leading edge will drop to the right side of the original fabric roll 3, By the time it rotates, the fabric 2 becomes detectable. When the leading edge of the fabric 2 is detected, the raw fabric roll 3 is rotated clockwise by about 90°, and the fabric 2 is wound until the leading edge of the raw fabric 2 comes to the left side of the raw fabric roll 3. - 特許庁

Note that the tip detection sensor 5 can be provided separately from the mounting table 11 . In this case, the mounting table 11 can be lowered into the lowered position during this operating phase. The leading edge detection sensor 5 may be advanced and retracted so as not to interfere with the movement of the delivery belt mechanism 6 and the mounting table 11 . Further, as in Patent Document 3, sensors may be provided on both the left and right sides below the raw fabric roll 3 to detect the leading edge of the fabric 2 hanging from the left or right end of the raw fabric roll 3 .

FIG. 4 shows an operation stage in which the mounting table 11 is lowered to the lowered position in (a) and the delivery belt mechanism 6 is swung to the advanced state in (a), and the leading edge of the fabric 2 is moved counterclockwise of the original fabric roll 3 in (b). The operation stages of sending out to the post-process side by rotating in the direction and conveying by the feed-out belt mechanism 6 are respectively shown. Since the feeding belt mechanism 6 is in a retracted state when the original fabric roll 3 is lifted by the mounting table 11 , it does not interfere with the mounting table 11 and the original fabric roll 3 . When the original fabric roll 3 is supported by the rotation support mechanism 4 as shown in FIG. 3A, the control means 10 can lower the mounting table 11 and switch the delivery belt mechanism 6 to the advanced state. Further, the control means 10 controls such that the belt 6c receives the fabric 2 which is drawn out from the raw fabric roll 3 and hangs down in the advanced state as shown in FIG. When the leading edge of the cloth 2 passes over the base edge side 6a and shifts to the post-process side, the leading edge is detected from the image captured by the camera 19, and the rotation of the original fabric roll 3 and the conveyance of the belt 6c are stopped. Since the frame 7 is movable along the track 9, if the camera 19 picks up an image near the side edge of the cloth 2 and detects the selvage, it is possible to align the selvage.

5(a) shows an operation stage in which the delivery belt mechanism 6 is swung to the retracted state, and FIG. 5(b) shows an operation stage in which the fabric 2 is delivered while being released. After the leading edge of the fabric 2 is sent from the base end side 6a of the delivery belt mechanism 6 to the post-process side, when the delivery belt mechanism 6 is put in the retracted state, the fabric 2 is placed between the original fabric roll 3 and the base end side 6a. Become relaxed. The slack amount of the fabric 2 is detected by the release sensor 18. - 特許庁Conveyance by the delivery belt mechanism 6 is performed while synchronizing with the conveyance of the post-process, and if the counterclockwise rotation of the original fabric roll 3 is faster than the conveyance, the amount of slackness increases, and if it is slowed down, the amount of slackness decreases. Become. By controlling the rotation of the original fabric roll 3 to suppress the amount of slack in an appropriate range, the fabric 2 in which the curling tendency has been reduced can be delivered to the post-process.

In the unraveling device 1, the raw fabric roll 3 is supported by the core 3a, and the cloth 2 is fed out by the feeding by the feeding belt mechanism 6 and the rotational drive by the rotation support mechanism 4, so that the cloth 2 to be fed out is not burdened. Under the control of the control means 10, the delivery belt mechanism 6 can switch between an advanced state and a retracted state. In the advanced state, the free end side 6b is advanced below the original fabric roll 3, and the leading end of the fabric 2 fed out from the original fabric roll 3 is conveyed to the base end side 6a. Since the fabric 2 is fed out while being released between the base end side 6a and the original fabric roll 3 in the retracted state, the work of leading the leading end of the fabric 2 to the post-process can be automated. The dough 2 can also be supplied to the post-process without releasing by keeping the delivery belt mechanism 6 in the advanced state shown in FIG. 4(b).

FIG. 6 shows the reason why it is preferable to increase the swinging angle of the belt 6c of the delivery belt mechanism 6 when the roll diameter D of the raw fabric roll 3 is small. When the feed belt mechanism 6 is advanced as shown in FIG. 4(a) and the roll diameter D of the original fabric roll 3 is small, the unraveling device 1 increases the swing angle as shown in FIG. 6(a). As shown in FIG. 6B, unless the swinging angle is increased, the gap between the belt 6c of the delivery belt mechanism 6 and the outer circumference of the original fabric roll 3 is large. If the diameter of the original fabric roll 3 is small, the curling of the leading edge of the fabric 2 becomes noticeable, and the leading edge of the fabric 2 fed from the original fabric roll 3 may not reach the surface of the belt 6c. By increasing the swinging angle as shown in FIG. 6A, the gap between the belt 6c of the delivery belt mechanism 6 and the outer circumference of the original fabric roll 3 is kept small without becoming too large. The belt 6c reliably receives the tip of the dough 2 hanging down and conveys it to the base end 6a. In the case of the fabric 2 that is less likely to curl, even if the diameter of the original roll 3 is small as shown in FIG. Therefore, one advancing state can correspond to a wide range of roll diameters D.

The raw fabric roll 3 can also be directly carried into and out of the rotation support mechanism 4 at the height of the raised position of the mounting table 11 . If a robot or the like is used for carry-out and carry-in, automation can be achieved without using the mounting table 11 . Even if the mounting table 11 of the present embodiment is not used, the belt 6c is put in the retracted state before the raw material roll 3 is carried in, and the belt 6c is put in the advanced state at the swing angle based on the roll diameter D measured after the carry-in. can do. The retracted state when the mounting table 11 is not used can also be used as the advanced state corresponding to the maximum roll diameter D. FIG. In the case of using the mounting table 11 , if the original fabric roll 3 is mounted on the mounting table 11 at the lowered position, it can be automatically raised to the raised position according to the roll diameter and supported by the rotation support mechanism 4 .

It should be noted that the unraveling device 1 can automatically wind the fed fabric 2 around the original fabric roll 3, release the support of the rotation support mechanism 4 for the original fabric roll 3, and lower the original fabric roll 3. be. In the state shown in FIG. 5B, the delivery belt mechanism 6 is driven in the direction opposite to the conveying direction during delivery, and the original fabric roll 3 is also rotated clockwise. When the fabric 2 is wound around the original fabric roll 3, the leading edge returns beyond the base end side 6a of the delivery belt mechanism 6 and hangs down from the left end of the original fabric roll 3.例文帳に追加Since the release sensor 18 shifts from the state of detecting the bottom of the loosened fabric 2 to the state of not detecting it, it is determined that the winding end has been detected. The measurement sensor 17 measures the distance to the upper end of the outer circumference of the original fabric roll 3 determined to be the end of the winding, and when the mounting table 11 is raised by the lift amount L corresponding to the measured value, it corresponds to FIG. 3(a). state. The support of the original fabric roll 3 by the rotation support mechanism 4 is released by moving the plug 4b on the moving side outward, the original fabric roll 3 is placed on the mounting table 11, and the mounting table 11 is lowered to the lowered position. Just do it.

Further, in the above description, the cloth 2 to be fed out is in the state of spreading on the outer surface, in which the outer peripheral side of the raw fabric roll 3 is the front side. However, it is also possible to let out the fabric in the state of the inner surface spread, in which the inner peripheral side of the raw fabric roll 33 is the front side. As shown in FIG. 7(a), if the raw fabric roll 33 for the inner surface spreading is rotated counterclockwise with respect to FIG. 3(b), the tip of the fabric 2 wound in the opposite direction It can be detected by the tip detection sensor 5 . As shown in FIG. 7(b), the delivery belt mechanism 6 may be advanced to receive the material 2 with the belt 6c. It can be made possible by hanging down from the left end of the raw fabric roll 33 . When the leading end of the fabric 2 is received by the belt 6c, the original fabric roll 33 is rotated clockwise to feed the fabric 2 onto the belt 6c. When the leading end of the fabric 2 passes over the base end 6a of the delivery belt mechanism 6, the delivery belt mechanism 6 is switched to the retracted state, and the fabric 2 is loosened and released between the base end 6a and the right end of the original fabric roll 33. It is possible to create a state in which an anti-region is formed. Since the leading end detection sensor 5 detects the leading end of the fabric 2 below the lower end of the outer circumference of the original fabric roll 33, even if only one leading end detecting sensor 5 is provided, the leading end of the fabric 2 can be detected in both winding directions. can be detected.

FIG. 8 shows a schematic configuration of the unraveling device 1 of FIG. 1 as a front view. The frame 7 includes a left side plate 7a and a right side plate 7b. The left side plate 7 a and the right side plate 7 b support sprockets 12 b and 12 c of the lifting mechanism 12 . Although the chain 12a is hung between the sprockets 12b and 12c, its illustration is omitted. The left side plate 7a and the right side plate 7b also support the guide 13a. The sprocket 12c on the right side plate 7b is rotationally driven by a lifting motor 12d. The rotational drive shaft is extended to the sprocket 12c on the left side plate 7a to transmit the driving force. A moving motor 8a is provided as a drive source for moving the frame 7 in the horizontal direction of the drawing with respect to the base 8, and rotates a pinion that meshes with a rack attached to the track 9. As shown in FIG.

FIG. 9 shows a simplified configuration of a moving mechanism 15 for moving the stopper 4b on the moving side of the rotating support mechanism 4. As shown in FIG. (a) is a front view of the moving mechanism 15, (b) is a bottom view, and (c) is a right side view. The moving mechanism 15 includes a moving cylinder 15a as a drive source. The moving cylinder 15a has a large extension stroke of the rod 15b, and can move the plug 4b from the maximum extension state indicated by the solid line to the minimum extension state indicated by the two-dot chain line. The moving cylinder 15a is attached to the top of the frame 7 via a mounting plate 15c. A measurement sensor 17 and a release sensor 18 are also attached to the mounting plate 15c.

It is assumed that the original fabric roll 3 uses a paper tube, which is a hollow tube, at least at both ends of the core 3a. The rotation support mechanism 4 has plugs 4a and 4b on both sides of the core 3a in the axial direction. The original fabric roll 3 is supported by the rotation support mechanism 4 by narrowing the distance between the plugs 4a and 4b from a state larger than the length of the core 3a. In this embodiment, the moving mechanism 15 moves the movable plug 4b closer to the fixed plug 4a, thereby narrowing the gap. Since the original roll 3 is placed on the mounting roller 11a on the mounting table 11, the original roll 3 can be easily moved together with the stopper 4b by fitting the stopper 4b on the moving side to the core 3a. can be approached. If a mechanism is provided that simultaneously moves the plugs 4a and 4b on both sides and moves only the other until it is fitted to the core 3a when one is fitted to the core 3a, it is not necessary to move the original fabric roll 3. . In any case, since the hollow tube serving as the core 3a of the raw fabric roll 3 is sandwiched from both sides in the axial direction by the taper plugs 4a and 4b, the cloth 2 wound around the core 3a is not burdened. can support.

1 unraveling device 2 fabrics 3, 33 original fabric roll 3a core 4 rotation support mechanism 4a, 4b plug 5 tip detection sensor 6 delivery belt mechanism 6a base end side 6b free end side 6c belt 7 frame 7b right side plate 8 mount 10 control means 11 Mounting table 11a Mounting roller 12 Elevating mechanism 13 Guiding mechanism 14 Swinging unit 15 Moving mechanism 16 Rotating mechanism 17 Measurement sensor 18 Retraction sensor 19 Camera

Claims (6)

In the unraveling device, the raw fabric roll around which the fabric is wound is supported by the core so as to provide a space around the outer periphery, and the fabric fed out from the raw fabric roll is supplied to the post-process,
A rotation support mechanism that supports the core of the raw fabric roll and can be rotated;
a measurement sensor capable of measuring the roll diameter of the original fabric roll supported by the rotation support mechanism;
A belt is stretched from the base end side provided at a distance from the original fabric roll on the post-process side to the free end side swinging around the base end side, and below the original fabric roll supported by the rotation support mechanism. The feeding belt mechanism can switch between an advanced state in which the free end side advances to the belt and the fabric fed from the original fabric roll can be conveyed to the base end side by the belt, or a retracted state in which the free end side retreats from below the original fabric roll. When,
When the raw fabric roll is supported by the rotation support mechanism, based on the roll diameter measured by the measurement sensor, control is performed so that the belt of the delivery belt mechanism is spaced from the outer circumference below the raw fabric roll at a predetermined interval or more, and control means for switching a delivery belt mechanism to an advanced state and conveying the fabric delivered from the original fabric roll to the base end side by the belt. The control means switches a swing angle, which is an angle at which the free end side of the delivery belt mechanism swings around the base end side, according to a plurality of predetermined ranges of the roll diameter, and controls the belt and the belt. 2. The unraveling device according to claim 1, wherein control is performed so that the distance from the outer circumference of the original fabric roll is within a predetermined range. It is arranged below the rotation support mechanism, is capable of moving up and down under the control of the control means in the retracted state of the delivery belt mechanism, and is capable of mounting the original roll at the lowered position. further comprising a mounting table that, when placed and raised, allows the core to be supported by the rotation support mechanism at the raised position, and descends away from the original fabric roll when the core is supported;
3. The unwaxing device according to claim 1, wherein the control means determines the lifted position of the mounting table according to the diameter of the roll. The core of the raw fabric roll has hollow tubular ends at both ends in the axial direction,
The rotation support mechanism is
On both sides of the core in the axial direction, plugs having a taper with a smaller diameter on the distal side and a larger diameter on the proximal side than the inner diameter of the end of the core are provided,
4. The unraveling device according to any one of claims 1 to 3, wherein the raw fabric roll is supported by narrowing the gap between both stoppers from a state larger than the length of the core. further comprising a leading edge detection sensor that detects the leading edge of the fabric unwound from the raw fabric roll below the raw fabric roll supported by the rotation support mechanism;
The control means controls the rotation support mechanism and the feeding belt mechanism based on the detection result of the leading end detection sensor and the roll diameter measured by the measurement sensor, and feeds the material roll supported by the rotation support mechanism. 5. The unraveling device according to any one of claims 1 to 4, characterized in that the front end of the fabric is received by the belt in the advanced state and is controlled to be conveyed to the base end side. The control means sends out the leading edge of the fabric to the post-process side in the advancing state, and then switches the delivery belt mechanism to the retracted state to move the material between the original roll and the base end of the delivery belt mechanism. 6. The unrolling device according to any one of claims 1 to 5, characterized in that the dough is fed to the post-process from the base end side while the dough is unrolled.

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