JP6649692B2 - Sheet material winding device - Google Patents

Description

The present invention relates to a sheet material wound ToSo location, in particular, by winding the sheet material in the winding shaft to form a take-up roll, to produce a take-up roll at sampling no core the take-up roll from the winding shaft It relates to the preferred sheet material wound ToSo location to those.

  In recent years, in the field of winding a sheet material into a roll to form a take-up roll and commercializing the product, cost reduction of a core portion of the take-up roll is required. In particular, in the coreless winding of a sheet material without using a core, the cost of the core material is eliminated, so that the coreless winding is desired. However, in the above-described coreless winding of the sheet material, the following problems occur.

Assignment 1. Formation of Roll Shape of Sheet Material When winding a sheet material, it is necessary to wind the sheet material in a state of having high roundness and being rounded to a constant diameter. As a main method for achieving this condition, there is a method in which a sheet material is wound around a cylindrical winding shaft which is a shaft of a winding roll, and after winding, the winding shaft is removed. However, in this case, a winding operation such as adsorbing the leading end of the sheet material to the winding shaft is required before winding. In the winding of the sheet material, a reaction force against bending is generated from the sheet material due to the rigidity of the sheet material. Therefore, in order to wind the sheet material around the winding shaft, it is necessary to attract the sheet material with a force stronger than the reaction force. In particular, when the rigidity of the sheet material is high or when the inner diameter of the take-up roll is small, a high suction force is required. A method of applying an adsorbent to the winding shaft and adhering the sheet material or a method of mechanically fixing the leading end of the sheet material can be considered, but the winding shaft is removed after winding the sheet material. Absent.

Task 2. Maintaining the shape of the take-up roll during take-up During the take-up of the sheet material, a compressive stress is generated in the direction in which the sheet material wound on the outer peripheral side of the roll winds the sheet material on the inner peripheral side. When there is a core, the shape can be maintained by opposing the compressive stress. However, when there is no core, a mechanism or mechanism capable of withstanding the compressive stress is required instead of the core. Further, when the sheet material is wound at a high speed, air is simultaneously taken in at the time of winding the sheet material, so that the winding roll is pressed against a nip roller or the like in order to prevent the inflow of air. Also in this case, since a load is applied to the winding roll by pressing, a structure that can withstand the load is required. Therefore, means for maintaining the shape of the winding roll, such as inserting a high-strength winding shaft inside the winding roll, is required.

Issue 3. How to remove the take-up shaft when using the take-up shaft When the take-up shaft is used inside the take-up roll and the sheet material is taken up, the taken-up sheet material strongly tightens the take-up shaft. When removing the winding shaft, a strong force is required. It is necessary to suppress the sheet material when removing the take-up shaft. In particular, when the sheet material has a strong tightening force, the force for suppressing the sheet material also increases, which is not realistic because the sheet material may be damaged. Therefore, there is a need for a method capable of extracting the winding shaft even if the force required for extracting the winding shaft is small.

Issue 4. Reliability of Winding Device As a solution to the problem 3, for example, there is a method of providing a variable portion on the winding shaft to reduce the diameter of the winding shaft to facilitate removal. On the other hand, when such a variable portion is provided, a problem arises in terms of reliability, such as wear and failure of the variable portion of the winding shaft. Furthermore, if a minute step is generated due to the variable portion on the surface of the winding shaft before winding, an indentation due to the step may occur in the wound sheet material, which may cause a product failure. Therefore, it is important not to use a variable portion on the winding shaft or to have a highly reliable variable mechanism.

  By the way, there are various prior art documents regarding the sheet material winding device, and for example, Patent Documents 1 to 3 are mentioned.

  That is, in Patent Document 1, a paper tube is inserted into a rotatable winding shaft, and a winding start end of a sheet material to be wound is attached to an outer peripheral portion of the paper tube. A sheet material take-up device that takes up a sheet material as a core by rotating a sheet material is described.A vent hole that can be connected to a vacuum pump is provided inside the take-up shaft, and an outer peripheral portion is provided. Is provided with a lateral groove that can communicate with the ventilation hole, and the paper tube is provided with a communication hole that communicates the lateral groove with the outside of the paper tube at at least one position. It is disclosed that a winding start end can be attracted to an outer peripheral portion of a paper tube by vacuum pressure when winding of a sheet material is started.

  Patent Document 2 discloses a pneumatic pressing mechanism for pressing a lug against the inner peripheral surface of a winding core while dividing a wide sheet material into a plurality of narrow sheet materials by a slitter. A sheet material split winding device that winds around individual winding cores held in an adjacent state by an air shaft provided is described. At the beginning of winding, the pressure of compressed air supplied to the pressing mechanism is reduced to wind the sheet material. It is disclosed that an automatic pneumatic control device capable of increasing the pressure of compressed air supplied to the pressing mechanism when the amount becomes large is provided.

  Further, in Patent Document 3, after a hollow core joined by a sheet material itself is gripped from both sides of the hollow core by a gripper having a tapered portion, the cavity formed by the gripper and the hollow core is decompressed. Then, the hollow core is suctioned and fixed to the gripper, and then the gripper is rotated in one direction to wind up the sheet material. After winding, the gripper is removed from the hollow core, and a coreless sheet roll is provided. This makes it possible to form a coreless sheet roll having a uniform take-up, and furthermore, it is not necessary to finish the take-up bobbin, resource saving can be achieved, and product cost can be reduced. Is disclosed.

JP-A-11-79485 JP 2001-261199 A JP-A-9-100049

  Here, the four problems in the above-described coreless winding of the sheet material and the above-described Patent Documents 1 to 3 will be discussed.

  First, in Patent Document 1, the above four problems can be satisfied. However, since winding is not performed in the first place without a core, there is no idea of removing the winding roll without a core, and further, a communication hole is provided. There is a problem that the cost of the core material is increased because the special core material (paper tube) is used, which does not lead to a reduction in product cost.

  Further, Patent Document 2 does not describe a coreless winding of a sheet material, and does not have a mechanism for reducing air holes. Therefore, the idea of reducing the cost of a product by winding a sheet material without a core arises in the first place. Not something.

  Further, in Patent Document 3, since the variable portion is not used for the take-up shaft, the above four problems can be satisfied. On the other hand, in high-speed generation of the take-up roll, breakage of the sheet material inside the device or Due to the bending, air enters between the sheet material layers, and the outer diameter is stabilized, but the inner diameter is not stable. In other words, although winding at a reduced speed does not cause any problem, productivity is reduced, and a problem remains in cost reduction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and the object of the present invention is not only to solve the above-mentioned four problems, but also to reduce the cost of products, even if the winding roll is generated without a core. It is to provide a sheet material winding ToSo location that leads to.

In order to achieve the above object, a sheet material winding device of the present invention includes a sheet material supply unit that supplies a sheet material, and a sheet material conveyance unit that processes and conveys the sheet material supplied from the sheet material supply unit. And a winding mechanism for winding the sheet material processed and conveyed by the sheet material conveying unit, generating a winding roll without a core, and guiding the sheet material together with a winding unit pressing roller. And a sheet material take-up section comprising a take-up section nip roller,
The sheet material take-up mechanism is configured to take up the sheet material conveyed by the take-up unit holding roller and the take-up unit nip roller, and to form a take-up shaft having an air hole that pressurizes or depressurizes the surface. A take-up shaft pressing mechanism for pressing the take-up shaft against the take-up portion nip roller; pressurizing means for supplying pressurized air to the air holes to apply a pressing force to the surface of the take-up shaft; Pressure reducing means for sucking air from the hole and applying a suction force to the surface of the winding shaft,
By suctioning air through the air hole by the pressure reducing means and depressurizing the surface of the winding shaft and sucking the leading end of the sheet material, the leading end of the sheet material is fixed to the winding shaft, The winding shaft is formed by winding the sheet material with the rotation of the winding shaft to generate the winding roll, and supplying pressurized air from the pressing unit through the air hole. tighten the surface of the pressure assay, a Cie over preparative material winding device sampling the take-up roll by expanding the take-up roll wound from the winding shaft,
The sheet material winding device includes a sheet material transfer control unit that controls transfer of the sheet material, a turret that transfers at least one of the winding shafts, a turret control unit that controls a position of the turret, A sheet material post-processing unit that separates the taken-up roll and the taken-up shaft by post-processing,
The sheet material post-processing unit includes a winding shaft holding mechanism that holds the winding shaft, and a sheet material holding mechanism that holds the winding roll wound around the winding shaft. In a state in which the winding shaft is held and fixed by a holding mechanism, the sheet material holding mechanism holds the winding roll wound on the winding shaft, and the sheet material holding mechanism is moved in the axial direction of the winding shaft. It is characterized in that the take-up roll is removed from the take-up shaft by moving .

  According to the present invention, even if a take-up roll is generated without a core, the above-described four problems can be solved and, of course, there is an effect that leads to cost reduction.

It is a schematic structure figure showing Example 1 of a sheet material winding device of the present invention. 1 is a schematic configuration diagram illustrating a sheet material winding mechanism employed in a first embodiment of a sheet material winding device according to the present invention. It is a flowchart which shows the winding process of the sheet material in Example 1 of the sheet material winding device of this invention. It is a figure which shows the schematic structure of the sheet material winding part in Example 1 of the sheet material winding device of this invention. FIG. 5 is a flowchart illustrating a process of winding and winding a sheet material around a winding shaft in a sheet material winding section illustrated in FIG. 4. FIG. 2 is a diagram illustrating a schematic configuration of a sheet material post-processing unit in Embodiment 1 of the sheet material winding device of the present invention. FIG. 7 is a flowchart showing a post-processing and a removing process of the sheet material wound around the winding shaft in the sheet material post-processing unit shown in FIG. 6. FIG. 3 is a schematic configuration diagram illustrating a configuration example of a winding shaft in the sheet material winding mechanism illustrated in FIG. 2. FIG. 9 is a schematic configuration diagram illustrating a configuration example of a winding shaft different from FIG. 8 in the sheet material winding mechanism illustrated in FIG. 2. It is Example 2 of the sheet material winding device of this invention, Comprising: It is a figure which shows the schematic structure of the sheet material winding part which winds several sheet materials around a winding shaft. It is Example 3 of the sheet material winding device of this invention, Comprising: It is a figure which shows the schematic structure of another example of the sheet material winding part which winds several sheet materials around a winding shaft.

Hereinafter, the sheet material wound ToSo location of the present invention will be described with reference to the embodiments shown. In each embodiment, the same reference numerals are used for the same components.

  1 to 3 show a first embodiment of a sheet material winding device according to the present invention. As shown in FIG. 1, a sheet material winding device 1 of the present embodiment includes a sheet material supply unit 4 for supplying a sheet material 11, a sheet material transport unit 5 for processing and transporting the supplied sheet material 11, A sheet material take-up unit 3 that takes up the conveyed sheet material 11 around a take-up shaft 31, a sheet material transfer control unit 6 that controls the conveyance of the sheet material 11, a turret 7 that carries the take-up shaft 31, and a turret 7 And a sheet material post-processing unit 9 that post-processes and separates the wound-up winding roll 19 and the winding shaft 31.

  The sheet material supply unit 4 includes a material roll 12 around which the sheet material 11 is wound, and a material nip roller 13 that nips and rotates the material roll 12. The raw nip roller 13 is provided with a rotation driving means 14A such as a motor, and the raw material nip roller 13 rotates the raw roll 12 to feed the sheet material 11 (S1 in FIG. 3). The fed sheet material 11 is guided by a take-up section nip roller 15 and a take-up section pressing roller 15A, which are rotationally driven by a rotation drive unit 14B such as a motor, via the sheet material transport section 5, and is fed to the sheet material take-up section 3. (S2 in FIG. 3). The sheet material winding section 3 has a turret 7, and the turret 7 includes one or more sets (four sets in the present embodiment) of the sheet material winding mechanism 2, and a rotary drive unit 14C such as a motor. Can rotate. The turret control unit 8 drives the rotation drive unit 14C to rotate the turret 7, so that the winding shaft 31 can be transported to a predetermined position (S3 in FIG. 3).

  The winding shaft 31 can be transported to the sheet material winding section 3 by the turret 7, and the sheet material 11 can be wound in the sheet material winding section 3 (S4 in FIG. 3). The take-up roll 19 and the take-up shaft 31 formed by winding in the sheet material take-up section 3 are conveyed to the sheet material post-processing section 9 by the turret 7 (S5 in FIG. 3). The winding roll 19 wound by the sheet material post-processing unit 9 is subjected to cutting of the rear end of the sheet material 11 and other post-processing steps (S6 in FIG. 3), and thereafter, the winding roll 19 is wound. It is extracted from the take-up shaft 31 (S7 in FIG. 3). The take-up shaft 31 from which the take-up roll 19 has been removed is conveyed again to the sheet material take-up section 3 through the rotation and conveyance of the turret 7. By repeating these operations, the sheet material 11 can be continuously wound, and the winding roll 19 can be generated.

  The sheet material 11 may be of any type, such as a resin sheet such as plastic or rubber, paper, cloth, metal foil, or a glass sheet. Further, the sheet material 11 is not limited to a single-layer material, but may be a material obtained by applying a coating process to a sheet material surface, a sheet material of a different material stuck together, or a laminated material, or an electronic circuit. Or a plurality of layers such as those having the above-mentioned pattern.

  Next, FIG. 2 shows the configuration of the sheet material winding mechanism 2 employed in the first embodiment of the sheet material winding device 1 of the present invention.

  As shown in the figure, the sheet material winding mechanism 2 winds the sheet material 11 and forms a winding shaft 31 in which an air hole 41 for pressurizing or depressurizing the surface is formed, and the winding shaft 31. A rotation driving means 14C (see FIG. 1) for rotating, a pressurizing means 61 such as a compressor for supplying pressurized air to the air hole 41 to apply a pressing force to the surface of the winding shaft 31, and an air from the air hole 41. It is roughly composed of a pressure reducing means 71 such as a suction pump for performing suction and giving a suction force to the surface of the winding shaft 31 (rotation driving means 14A, 14B, 14C are not shown).

  Bearing portions 32 for bearing the winding shaft 31 are provided at both ends of the winding shaft 31, and near the air hole 41 on the surface portion of the winding shaft 31, the surface portion of the winding shaft 31 is provided. An air groove 42 is provided for increasing the suction force due to the pressing force or the reduced pressure. Inside the winding shaft 31, there is an air passage 43 communicating with the axial end of the winding shaft 31, and the air hole 41 communicates with the air passage 43. At the end of the take-up shaft 31, a joining portion 45 (for example, packing is sandwiched between flanges, bolts, etc.) for connecting the air flow path 43 and the air pressure adjusting portion 51 outside the take-up shaft 31 via the tube 44 is provided. The joining portion 45 allows the winding shaft 31 and the air pressure adjusting portion 51 to be joined or detached from each other.

  Further, the air pressure adjusting unit 51 includes the above-described pressurizing unit 61 for supplying the pressurized air and the depressurizing unit 71 for performing the air suction. The pressurizing unit 61 supplies the pressurized air via the tube 44. Thus, pressurized air can be supplied from the air hole 41 on the surface of the winding shaft 31, and the air on the surface of the winding shaft 31 is removed by the air suction by the decompression means 71 through the tube 44. 41 can be sucked.

  Whether to supply the pressurized air by the pressurizing means 61 or to suck the air by the depressurizing means 71 can be selected by a pressurizing and depressurizing switching section 52 provided in the air pressure adjusting section 51. In the pressurizing / depressurizing switching section 52, the pressurizing means 61 or the depressurizing means 71 can be connected to the joining portion 45 of the winding shaft 31 and changed, and both means can be cut off from the joining portion 45. The pressurizing and depressurizing switching unit 52 includes a pressurizing and depressurizing switching unit 52 and a pressurizing and depressurizing control unit 53 (see FIG. 1) that controls switching between pressurizing and depressurizing.

  Further, in order to efficiently supply the pressurized air by the air pressure adjusting unit 51, a pressurized air storage tank 62 for storing the pressurized air is provided between the pressurizing unit 61 and the pressurized pressure reducing switching unit 52. You may. By providing the pressurized air storage tank 62, even if the supply amount of pressurized air per unit time by the pressurizing means 61 is small, the pressurized air is stored in advance at the time of decompression, thereby increasing the pressure during pressurization. The air supply can be increased.

  Further, an air decompression tank 72 may be provided between the decompression means 71 and the pressurized and depressurized switching unit 52 in order to efficiently perform the air suction by the air pressure adjusting unit 51. By providing the air decompression tank 72, when the pressure is switched from a state other than decompression to decompression by the pressurization and decompression switching unit 52, in addition to the decompression means 71, the pressure in the air decompression tank 72 is reduced, Air suction amount can be increased.

  In the present embodiment, the number of the air holes 41 formed in the winding shaft 31 may be one or more and may be arbitrary. The shape of the air hole 41 may be any shape such as an elongated rectangle such as a slit, a circle or a triangle. Further, the air holes 41 may be replaced with a porous material formed of fine holes or the like, and the pressure may be increased or reduced.

  The shape and arrangement of the air holes 41 and the air grooves 42 are arbitrary, but it is preferable that the air holes 41 and the air grooves 42 are arranged in the axial direction of the surface of the winding shaft 31 in order to suction and adsorb the sheet material 11. Further, it is preferable that the air holes 41 and the air grooves 42 are arranged in a width range in which the sheet material 11 comes into contact with the surface of the winding shaft 31. It is preferable to arrange them so that the pressing force at the central part in the axial direction becomes high.

  Further, the air pressure adjusting section 51 is divided into two or more parts that perform only the supply of the pressurized air by the pressurizing means 61 and those that perform only the air suction by the depressurizing means 71. Switching of the means 71 may be performed.

  Further, in the present embodiment, the position and the number of the joining portions 45 are not limited. For example, the joint portions 45 are provided at both shaft ends of the winding shaft 31, and the surface of the winding shaft 31 is pressurized from one shaft end of the winding shaft 31, and is wound through the other shaft end. A structure in which the surface of the spindle 31 is depressurized may be used.

  Next, referring to FIGS. 4 and 5, an example of a configuration in which the sheet material 11 is wound around the winding shaft 31 in the above-described sheet material winding section 3, and the sheet material 11 is wound around the winding shaft 31. The flow of the taking step will be described.

  As shown in FIG. 4, the sheet material take-up section 3 is provided with a take-up section nip roller 15 and a take-up section holding roller 15A for conveying the sheet material 11. The take-up section nip roller 15 is provided with a rotation drive means (take-up shaft transport mechanism) 14B for driving the take-up section nip roller 15 to rotate. The rotation drive section 14B drives the take-up section nip roller 15 to rotate. The sheet material 11 can be conveyed to a predetermined position (a sheet material guide mechanism is configured by the winding portion nip roller 15, the winding portion pressing roller 15A, and the rotation driving unit 14B). That is, the leading end of the sheet material 11 can be conveyed to the vicinity of the air hole 41 formed in the winding shaft 31 by the sheet material guiding mechanism.

  The take-up shaft 31 (S1 in FIG. 5) conveyed to the sheet take-up section 3 by the turret 7 is provided with air hole position adjusting means (for example, an end of the take-up shaft 31) provided in the sheet take-up device 1. A motor is attached to the portion, and the winding shaft 31 is rotated by the motor to adjust the air hole 41 to an appropriate position), so that the position of the air hole 41 on the surface of the winding shaft 31 in the rotation direction is adjusted. It is possible to grasp and control the rotational position (S2 in FIG. 5). The rotational position is controlled by the air hole position adjusting means so as to face the winding portion nip roller 15 side.

  Further, the turret 7 is provided with a winding shaft pressing mechanism 33 that can press the winding shaft 31 against the winding portion nip roller 15 by using air pressure, weight, or the like. The winding shaft 31 is pressed against the nip roller 15 of the winding unit. At this time, the leading end of the sheet material 11 is conveyed to the nip portion by the rotation driving means 14B with the winding portion nip roller 15 (S3 in FIG. 5). Therefore, the sheet material 11 is nipped between the winding shaft 31 and the winding portion nip roller 15 (S4 in FIG. 5).

  Further, in order to adsorb and fix the nipped sheet material 11 to the winding shaft 31, the air pressure 41 is switched by the pressure reducing unit 71 of the air pressure adjusting unit 51 joined to the winding shaft 31 so that the pressure reducing unit 71 communicates with the air hole 41. (S5 in FIG. 5). The sheet material 11 can be suction-fixed to the surface of the winding shaft 31 by suctioning the sheet material 11 from the air holes 41 and the air grooves 42 of the winding shaft 31 by the pressure reducing means 71 (S6 in FIG. 5). ). The sheet material 11 is conveyed to the nip portion of the sheet material winding section 3 and is nipped by rotating the winding section nip roller 15 by the rotation driving means 14B in a state where the sheet material 11 is fixed by suction. When the winding shaft 31 is driven, the sheet material 11 can be wound around the winding shaft 31 (S7 in FIG. 5).

  During or after the winding of the sheet material 11, the winding shaft 31 is removed from the depressurizing means 51 by the pressurizing and depressurizing switching unit 52 (S 8 in FIG. 5), and the connection is switched to another means. After the sheet material 11 is wound, the pressing of the winding shaft 31 by the winding shaft pressing mechanism 33 is released. Thereafter, the winding shaft 31 is conveyed to the sheet material post-processing section 9 by the turret 7 (S9 in FIG. 5).

  Next, referring to FIGS. 6 and 7, an example of the sheet material post-processing unit 9 in the above-described sheet material winding device 1 of the present embodiment and the winding wound around the winding shaft 31 in the sheet material post-processing unit 9. A flowchart of the post-processing and the extracting process of the extracting roll 19 will be described.

  As shown in FIG. 1, the winding shaft 31 on which the sheet material 11 has been wound is conveyed to the sheet material post-processing unit 9 by the turret 7 (S1 in FIG. 7). Thereafter, the bearing 32 of the winding shaft 31 on the side not connected to the air pressure adjusting unit 51 connected to the pressurizing means 61 of the winding shaft 31 is removed from the winding shaft 31. The sheet material post-processing unit 9 has a sheet material cutting mechanism 21 that cuts the rear end of the sheet material 11 using a cutter, a laser, or the like. The sheet material 11 (S2 in FIG. 7) whose rear end has been cut by the sheet material cutting mechanism 21 is subjected to a post-processing step (S3 in FIG. 7) such as sealing. Thereafter, in order to remove the winding roll 19 wound on the winding shaft 31, the pressurizing means 61 communicates with the air hole 41 by the pressurizing and depressurizing switching unit 52 of the air pressure adjusting unit 51 joined to the winding shaft 31. (S4 in FIG. 7).

  The take-up roll 19 wound around the take-up shaft 31 exerts a stress in a direction in which the take-up shaft 31 is tightened by tension applied to the sheet material 11 at the time of take-up or deformation of the sheet material 11 after take-up. Due to this stress, when the take-up roll 19 is pulled out from the take-up shaft 31, a frictional force is generated between the take-up roll 19 and the take-up shaft 31 due to the stress. By pressing the winding roll 19 to the outside of the winding shaft 31 through the hole 41 (S5 in FIG. 7), a force against the compressive stress applied from the winding roll 19 is added.

  Also, by expanding the winding roll 19, an air layer is formed between the winding roll 19 and the winding shaft 31. Therefore, the force against the compressive stress and the formation of the air layer cause the winding roll 19 to expand. Can be reduced when pulling out from the winding shaft 31.

  Further, the sheet material post-processing unit 9 grips the winding shaft holding mechanism 22 that grips the winding shaft 31 by a brake or the like that applies a frictional force, and the winding roll 19 that has been wound. And a sheet material holding mechanism 23 such as an arm or a link mechanism. The take-up roll 19 is in a state of being pressurized and expanded by the pressurizing means 61 via the air hole 41. The winding shaft 31 is held and fixed by the winding shaft holding mechanism 22. In this state, the take-up roll 19 wound around the take-up shaft 31 is held by the sheet holding mechanism 23, and the take-up roll 19 is pulled out in the axial direction of the take-up shaft 31. It can be removed from the winding shaft 31 (S6 in FIG. 7). After the take-up roll 19 is removed from the take-up shaft 31, the holding of the take-up shaft 31 by the take-up shaft holding mechanism 22 is released, and the removed bearing portion 32 is attached to the take-up shaft 31 (S7 in FIG. 7). . Thereafter, the winding shaft 31 is conveyed from the sheet material post-processing section 9 via the turret 7.

  By the way, as shown in FIG. 6, when a plurality of air holes 41 (see FIG. 2) are present in the winding shaft 31, when the sheet material 11 is removed from the winding shaft 31, In the axial direction, an air hole 41 not covered with the sheet material 11 is formed, and the air hole 41 is opened to the outside of the winding shaft 31.

  As a result, the pressurized air in the winding shaft 31 is released into the atmosphere through the open air holes 41, and the air pressure in the winding shaft 31 decreases. Due to this decrease in air pressure, the air pressure from the air holes 41 that pressurizes and expands the sheet material 11 is reduced, and it may be difficult to remove the sheet material 11.

  FIG. 8 shows an example for preventing the influence of such a decrease in air pressure. In the example shown in FIG. 8, the arrangement of the air holes 41 of the winding shaft 31 is adjusted. That is, in FIG. 8, the pitch between the air holes 41 of the winding shaft 31 is shortened in the sheet material 11 withdrawing direction, the pitch on the opposite side is longer than the sheeting direction side, and the air groove 42 (see FIG. 2). Is not provided.

  Thus, when the sheet material 11 is removed from the winding shaft 31, the number of the open air holes 41 is kept small, and the winding shaft due to the flow of the pressurized air from the open air holes 41 and the air grooves 42. The pressure drop in the inside 31 can be prevented, and the sheet material 11 can be easily removed.

  In addition to the above, the same effect can be expected by increasing the size of the air holes 41 and the air grooves 42 in the sheet material 11 extraction direction.

  Further, in the above-described extracting step, the air hole 41 of the winding shaft 31 may be arranged closer to the center in the axial direction in order to easily expand the sheet material 11 at the start of pressurization. Thus, the entire sheet material 11 can be easily expanded before being extracted.

  With such a configuration of the winding shaft 31, the sheet material 11 wound on the winding shaft 31 can be easily removed.

  As another example of making it easier to remove the sheet material 11 from the winding shaft 31, a plurality of rows of air holes 41 formed in the axial direction of the winding shaft 31 are provided in the circumferential direction of the winding shaft 31. It is conceivable to arrange them in columns.

  FIG. 9 shows this example. In the configuration of FIG. 9, a plurality of rows of the air holes 41 formed in the axial direction of the winding shaft 31 are arranged in a plurality of rows in the circumferential direction of the winding shaft 31. With respect to the circumferential direction, the sheet material 11 can be pressure-expanded not only in one direction but also in multiple directions by the number of air holes 41 arranged.

  As a result, the sheet material 11 can be evenly pressurized and expanded in the circumferential direction, so that the thickness of the air layer between the winding shaft 31 and the sheet material 11 can be made uniform as a whole, and the sheet material 11 can be made uniform. It is possible to reduce the frictional force generated at the time of extracting the sheet. With such a configuration, the sheet material 11 can be easily extracted.

  However, in this configuration, when the sheet material 11 is sucked into the take-up shaft 31 by air, an air hole 41 not covered with the sheet material 11 is formed, so that the pressure in the take-up shaft 31 increases and the sheet material 11 is removed. Adsorption is difficult. Therefore, it is preferable to use a different configuration depending on the state of suction and removal of the sheet material 11.

  With the configuration of the present embodiment, even if the winding roll 19 is generated without a core, the roll shape of the sheet material 11 can be formed, the shape of the sheet material 11 can be maintained during winding, and the like. Not only the four problems of the method of removing the winding shaft 31 and the reliability of the winding device when the winding shaft 31 is used can be solved, but also leads to a reduction in product cost and an effect of improving the reliability of the device.

  FIG. 10 shows a second embodiment of the sheet material winding device according to the present invention. The embodiment shown in the figure shows an example of a configuration in which a plurality of sheet materials 11 are wound around a winding shaft 31.

  As shown in FIG. 10, in this embodiment, after the sheet material 11 is wound on the winding shaft 31 by the sheet material winding unit 3, another sheet material is cut in a state where the rear end of the winding roll 19 is cut. It is conveyed to the winding unit 10. Another sheet material winding section 10 includes a winding section nip roller 17 that winds and conveys the sheet material 16. The take-up shaft 31 is pressed against the take-up portion nip roller 17 by a take-up shaft pressing mechanism 33 which is a sheet material insertion mechanism with the rear end of the sheet material 11 unwound. At this time, the rear end of the sheet material 11 wound around the winding shaft 31 is set in a state of being wound around the winding portion nip roller 17.

  On the other hand, the sheet material 16 wound around the winding portion nip roller 17 is located between the sheet material 11 whose leading end is wound around the winding shaft 31 and the sheet material 11 wound around the winding portion nip roller 17. Is inserted into. By winding the sheet material 11 in this state, the two sheet materials of the sheet material 11 and the sheet material 16 can be wound on the winding shaft 31. By repeating this process, three or more sheet materials can be wound around the winding shaft 31 in multiple layers.

  Some examples of such a multi-layer winding of a sheet material will be described. For example, when a highly rigid sheet material is wound around the winding shaft 31, a high suction force is required, and depending on the sheet material, there may be a case where winding by air suction cannot be performed. In this case, a low-rigidity sheet material is wound first on the inner peripheral side of the winding shaft 31, and a high-rigidity sheet material is inserted between the low-rigidity sheet material layers and wound, thereby winding the high-rigidity sheet material. Can be assisted.

  Further, as another example, by wrapping a wide and highly rigid sheet material on the inner peripheral side, it is possible to prevent the sheet material from being damaged from the inner peripheral side and the sheet material being damaged in the axial direction. .

  As another example, wrapping a highly rigid sheet material or wrapping paper around the outer periphery prevents the sheet material from being damaged from the outside and prevents deterioration of the sheet material such as light, Can be improved.

  Further, by using a functional sheet material having a function of a desiccant on the outer peripheral side and the inner peripheral side, a function useful for absorbing moisture may be considered. When a transparent sheet material is wound on the outer peripheral side, the pattern can be projected on the outer peripheral part by printing the pattern on the inner peripheral side sheet material. Further, in the multi-layer sheet material winding step, the step of cutting the rear end portion of the sheet material is omitted, so that a long length of the multi-layer sheet material can be wound.

  Even with such a configuration of this embodiment, the same effect as that of the first embodiment can be obtained, and a plurality of sheet materials can be wound around the winding shaft 31 in multiple layers.

  FIG. 11 shows a third embodiment of the sheet material winding device according to the present invention. The present embodiment shown in the drawing shows another example of a configuration in which a plurality of sheet materials 11 are wound around a winding shaft 31.

  As shown in the drawing, in the present embodiment, the sheet material take-up section 3 uses a viscous liquid such as a double-sided tape or water, a predetermined amount of static electricity, or the like for the take-up section nip roller 15, and the sheet material takes up the sheet. A sheet material attaching mechanism 24 to which the material 18 can be attached is provided.

  The sheet material 18 is wound around a winding shaft 31 instead of the sheet material 11 which is originally wound when the winding of the sheet material 11 is started. Since the sheet material 18 has been wound around the winding portion nip roller 15 in advance, the sheet material 11 is wound around the outer peripheral side of the sheet material 18 of the winding portion nip roller 15. Therefore, when the winding of the sheet material 18 around the winding shaft 31 is started, the sheet material 11 can be wound on the winding shaft 31 as it is.

  Even with such a configuration of the present embodiment, the same effect as that of the second embodiment can be obtained.

  Note that the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described above. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of one embodiment can be added to the configuration of another embodiment. Also, for a part of the configuration of each embodiment, it is possible to add, delete, or replace another configuration.

  DESCRIPTION OF SYMBOLS 1 ... Sheet winding device, 2 ... Sheet winding mechanism, 3 ... Sheet winding part, 4 ... Sheet supply part, 5 ... Sheet conveyance part, 6 ... Sheet conveyance control part, 7 ... Turret, 8: Turret control unit, 9: Sheet material post-processing unit, 10: Another sheet material winding unit, 11, 16, 18: Sheet material, 12: Material roll, 13: Material nip roller, 14A, 14B, 14C ... Rotation driving means, 15, 17 ... Nip roller for winding unit, 15A ... Roller for holding down winding unit, 19: Roll for winding, 21: Sheet material cutting mechanism, 22: Retaining shaft holding mechanism, 23: Sheet material holding mechanism, 24: sheet material sticking mechanism, 31: winding shaft, 32: bearing part, 33: winding shaft pressing mechanism, 41: air hole, 42: air groove, 43: air flow path, 44: tube, 45: joining Unit, 51: air pressure adjusting unit, 52: pressurizing and depressurizing switching unit, 3 ... pressure pressure reduction control unit, 61 ... pressing means, 62 ... compressed air savings tank, 71 ... pressure reducing means, 72 ... air vacuum vessel.

Claims (10)

A sheet material supply unit that supplies a sheet material, a sheet material conveyance unit that processes and conveys the sheet material supplied from the sheet material supply unit, and a sheet material that is processed and conveyed by the sheet material conveyance unit. Winding up, comprising a sheet material take-up mechanism that generates a take-up roll without a core, and a sheet material take-up unit including a take-up unit nip roller that guides the sheet material together with a take-up unit pressing roller,
The sheet material take-up mechanism is configured to take up the sheet material conveyed by the take-up unit holding roller and the take-up unit nip roller, and to form a take-up shaft having an air hole that pressurizes or depressurizes the surface. A take-up shaft pressing mechanism for pressing the take-up shaft against the take-up portion nip roller; pressurizing means for supplying pressurized air to the air holes to apply a pressing force to the surface of the take-up shaft; Pressure reducing means for sucking air from the hole and applying a suction force to the surface of the winding shaft,
By suctioning air through the air hole by the pressure reducing means and depressurizing the surface of the winding shaft and sucking the leading end of the sheet material, the leading end of the sheet material is fixed to the winding shaft, The winding shaft is formed by winding the sheet material with the rotation of the winding shaft to generate the winding roll, and supplying pressurized air from the pressing unit through the air hole. tighten the surface of the pressure assay, a Cie over preparative material winding device sampling the take-up roll by expanding the take-up roll wound from the winding shaft,
The sheet material winding device includes a sheet material transfer control unit that controls transfer of the sheet material, a turret that transfers at least one of the winding shafts, a turret control unit that controls a position of the turret, A sheet material post-processing unit that separates the taken-up roll and the taken-up shaft by post-processing,
The sheet material post-processing unit includes a winding shaft holding mechanism that holds the winding shaft, and a sheet material holding mechanism that holds the winding roll wound around the winding shaft. In a state in which the winding shaft is held and fixed by a holding mechanism, the sheet material holding mechanism holds the winding roll wound on the winding shaft, and the sheet material holding mechanism is moved in the axial direction of the winding shaft. A sheet material winding device , wherein the winding roller is removed from the winding shaft by moving . The sheet material winding device according to claim 1 ,
The sheet material winding device, wherein the decompression unit or the pressurization unit and the air hole are communicated via an air flow path. The sheet material winding device according to claim 1 or 2 ,
An air groove communicating with the air hole is formed in a surface portion of the winding shaft. The sheet material winding device according to claim 2 ,
A pressurizing and depressurizing switching means for switching the air flow path to a connection between the pressurizing means and the depressurizing means is provided between the air flow path and the pressurizing means and the depressurizing means. Sheet material winding device. The sheet material winding device according to claim 4 ,
A pressurized air storage tank for storing pressurized air supplied when the pressurizing means is disconnected from the air flow path is provided between the pressurizing means and the pressurizing and depressurizing switching means. A pressurizing means for supplying the pressurized air stored in the pressurized air storage tank simultaneously with pressurized air from the pressurizing means when a pressurizing means is connected to the air flow path; . The sheet material winding device according to claim 4 ,
Between the depressurizing means and the pressurizing and depressurizing switching means, when the depressurizing means is cut off from the air flow path, an air depressurizing tank whose inside is depressurized by the depressurizing means is provided; A sheet material winding device, wherein when connected to an air flow path, air suction is performed in the air decompression tank simultaneously with air suction in the decompression means. The sheet material winding device according to any one of claims 1 to 6 ,
A sheet material cutting mechanism that cuts the sheet material and conveys and positions a cut portion of the sheet material; and winds the sheet material around the winding shaft to generate the winding roll, and the sheet material cutting mechanism. A sheet material winding device that cuts the sheet material and holds and conveys a cut portion of the sheet material. The sheet material winding device according to claim 1 ,
A sheet material insertion mechanism for inserting another sheet material between the wound sheet material and the subsequently wound sheet material, wherein the sheet material is inserted with the another sheet material inserted by the sheet material insertion mechanism. A sheet material winding device, wherein a winding roll made of a plurality of types of sheet materials is generated by winding. The sheet material winding device according to claim 8 ,
A sheet material winding device, comprising: a sheet material guide mechanism for conveying a leading end of the sheet material to a position near the air hole formed in the winding shaft. The sheet material winding device according to claim 9 ,
A sheet material winding device comprising: an air hole position adjusting means for rotatingly driving the winding shaft; and adjusting a rotational position of the air hole formed in the winding shaft by the air hole position adjusting means. Taking device.

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