JP2005067874A - Sheet take-up shaft device - Google Patents

Abstract

The structure is relatively simple and the number of parts is reduced, so that it is easy to ensure the accuracy of rotation balance around a winding shaft member 2 and to reduce the production cost.
An annular male guide body 28 fitted in a gas-tight manner on a winding rotary shaft member 2, and a gas-tight shape on the annular male guide body 28 and in the direction of the center line x of the winding rotary shaft member 2. And an annular female piston body 30 externally fitted so as to be slidably displaceable, and an urging means 33 for urging the annular female piston body 30 in a specific direction, and the annular male guide body 28 and the annular female. A core locking release means 13 having a pressure chamber 32 formed between the piston body 30 and the piston body 30 is provided.
[Selection] Figure 2

Description

  The present invention relates to a sheet take-up shaft device that mounts a winding core and winds a sheet around the core.

  Conventionally, in a take-up shaft device that winds a thin sheet formed by slitting a wide sheet such as paper or plastic film vertically, a plurality of cores (usually paper tubes) are taken up by a take-up rotary shaft. The operation | work which mounts | wears with the several winding part provided in the surrounding surface of the member, and winds up a narrow sheet | seat on the surrounding surface of the core is performed. In this operation, the core must be fixed to the winding section during the winding of the sheet, and after the winding to the winding core is completed, the whole core is removed and a new core is removed. In order to be mounted on the winding unit, the winding core needs to be detachable from the winding rotary shaft member.

As such a sheet take-up shaft device, the present applicant has already proposed the one shown in Patent Document 1, and the outline thereof includes an input member pressed by air pressure, and Winding rotation adjustment transmission means for transmitting a rotational force of a magnitude related to the displacement force of the input member from the winding rotary shaft member to the winding portion, and the winding portion and the outer fitting portion It is provided with a winding core locking release means that makes the winding core in a locked state or releases the locked state by applying air pressure.
The sheet take-up shaft device according to the proposal is relatively complicated in structure and requires many parts, although the core locking release means is advantageous in reducing the diameter of the take-up portion. Thus, it is difficult to ensure the accuracy of the rotation balance around the winding rotary shaft member and to reduce the production cost.

JP 2000-327182 A

  The present invention is a sheet take-up shaft device that is relatively simple in structure and requires only a small number of components, and that can easily ensure the accuracy of rotation balance around the take-up roll shaft member and reduce production costs. The purpose is to provide.

  In the sheet winding shaft device according to the present invention, as described in claim 1, the winding rotary shaft member is externally fitted with a winding portion so as to be relatively rotatable, and the winding rotary shaft member to the winding portion. The winding rotation adjustment transmitting means for adjusting the rotational force transmitted to the winding unit and the winding core externally fitted to the winding unit may be brought into a locked state to the winding unit as necessary. In a sheet take-up shaft device provided with a core lock release means for releasing the locked state, the core lock release means is externally fitted in a gas-tight manner on the take-up rotary shaft member. An annular male guide body, an annular female piston body externally fitted to the annular male guide body so as to be gas-tight and slidably displaceable in the direction of the center line of the winding rotary shaft member, and the annular female piston body are identified And a biasing means for biasing in the direction.

  In the present invention, when a gas flows into a pressure chamber formed between the annular male guide body and the annular female piston body, the annular female piston body is displaced in a specific direction and is removed from the winding portion. When the fitted core is locked to the winding part, and conversely, when gas flows out of the pressure chamber, the annular female piston body is moved in the specific direction by the biasing force of the biasing means. It is displaced in the reverse direction and the locked state of the core is released.

The above-described invention is preferably embodied as follows.
When adapting to a case where the diameter of the winding portion is relatively large, as described in claim 2, the core locking release means is disposed at an equiangularly arranged portion around the rotation center of the winding portion. A plurality of locking claws that are arranged so as to be displaceable in a specific radial direction around the rotation center and that are contacted and separated by a winding core that is externally fitted to the winding portion, and each of the locking claws An annular spring stretched over the provided locking portion and an interlocking mechanism for interlocking the locking claw with the annular female piston body are provided.

  Further, in order to improve the durability and the accuracy of operation, as described in claim 3, the winding rotation adjustment transmission means is a part of the winding rotation adjusting member, and the winding rotating shaft member to the winding portion. A first air passage for directly contacting the compressed air for adjusting the rotational force with an input member that adjusts the rotational force transmitted to the rotor, the annular male guide body, and the annular female piston body; And a second air passage that is communicated with the pressure chamber formed between the first and second pressure chambers is formed independently at the thick portion of the winding rotary shaft member.

According to the present invention described above, the following effects can be obtained.
That is, according to the first aspect of the present invention, the winding core locking release means is formed by the annular male guide body, the annular female piston body, and the biasing means. Compared to the sheet take-up shaft device shown in FIG. 1, it can be manufactured at a low cost with a small number of parts, and the annular male guide body and the annular female piston body can be formed into a simple rotating body shape. It can be easily manufactured without necessity and can be excellent in the rotation balance around the winding rotary shaft member, and the winding performance of the narrow sheet around the winding portion can be improved.

  According to the second aspect of the invention, the same effect as in the case of the first aspect of the invention can be obtained and the following effect can be obtained. That is, the winding portion has a large diameter. In this case, the winding rotary shaft member can have an arbitrary diameter, and the annular spring can be made shorter than the length of the outer peripheral surface of the winding portion. The annular spring can be positioned inward to prevent other objects from getting entangled with the spring, and the spring can be shielded from the outside air to suppress rusting and the like.

  Further, according to the third aspect of the present invention, the same effect as the case of the first aspect of the invention can be obtained and the following effect can be obtained, that is, the first air passage and the second air. Since the passage is separated by the material of the winding rotary shaft member, the phenomenon that air does not flow from one air passage to the other air passage is difficult to occur, so that each component can be operated accurately. In addition, since the compressed air for adjusting the winding rotation is brought into direct contact with the input member without any other object, the operation of the input member can be performed accurately. The winding performance of the narrow sheet can be improved.

Next, a first embodiment of the present invention will be described in detail with reference to FIGS.
1 and 2, reference numeral 1 denotes a sheet take-up shaft device. The sheet take-up shaft device 1 is a take-up rotary shaft member 2 that rotates by receiving power from a drive source (not shown), and the take-up rotary shaft. A plurality of winding portions 3 arranged on the outer peripheral surface of the member 2 in the direction of the center line x and fitted on the outer periphery of the member 2, and a winding rotary shaft on each end side of the winding rotary shaft member 2 Bearing portions 4a and 4b for supporting the member 2 rotatably are formed. At this time, one bearing portion 4a has a supporting capability sufficient to support the winding rotary shaft member 2 in a cantilever manner, and the other bearing portion 4b is provided via a support arm member 4c that can be removed by a simple operation. Supported by the fixed part. Then, at one end of the winding rotary shaft member 2, compressed air whose pressure is arbitrarily increased during the rotation of the winding rotary shaft member 2 is passed through air supply pipes 5 a 1 and 5 b 1 extended from an external air supply source. Two air supply rotary connectors 5a and 5b that can be fed inward of the winding rotary shaft member 2 are attached. Reference numeral 5c denotes a pulley for inputting a rotational driving force such as a motor (not shown) to the take-up rotary shaft member 2, and the take-up portion 3 shown in FIG. 1 is expressed with its internal structure omitted.

  In the winding rotary shaft member 2 in which air is fed through the air supply pipes 5a1 and 5b1 and the air supply rotary connectors 5a and 5b, as shown in FIGS. The air passage 8 and the second air passage 9 are formed in an independent state, and the first air passage 8 includes the first straight hole 8a formed at x center lines of the winding rotary shaft member 2 and the first air passage 8. A first radial hole 8b is provided from the straight hole 8a in the radial direction around the center line x, and the second air passage 9 is a portion where the first air passage 8 is present in the thick portion of the winding rotary shaft member 2. A second straight hole formed so as to be directed in the direction of the center line x in each of a plurality of equiangular locations around the center line x (in the illustrated example, equiangular locations at intervals of 180 degrees). 9a and a second radial hole extending from the second straight hole 9a in the radial direction around the center line x It is equipped with a b.

  One air supply rotary connector 5a is configured to send compressed air controlled to an appropriate pressure by a control device (not shown) into the first air passage 8, and the other air supply rotary connector 5b has a specific size. Driven compressed air whose pressure has been increased to the above pressure is fed into the second air passage 9.

  As shown in FIGS. 1 and 2, the one bearing portion 4 a includes a flange body 6 fixed to the winding rotary shaft member 2, and is externally fitted to the rear end of the winding rotary shaft member 2 so as to be attached to the flange body 6. A fixed sleeve member 7, a fixed cylindrical holding member 10, bearings 11, 11 that are mounted between the cylindrical holding member 10 and the sleeve member 7 and rotatably support the winding rotary shaft member 2. It is made up of.

  A number of winding portions 3 are externally fitted in parallel to the winding rotary shaft member 2, and each winding portion 3 can hold a cylindrical winding core A shown in FIG. As shown in FIGS. 2, 3, 5, and 6, each winding unit 3 has a cylindrical outer peripheral ring that has an outer peripheral part on which the winding core A is fitted, and is fitted on the winding rotary shaft member 2. 17 and a support ring 15 that is externally fitted to the winding rotary shaft member 2 and is concentrically coupled and fixed to the outer peripheral ring 17 via screws, and a central hole portion of the outer peripheral ring 17 and a central hole portion of the support ring 15 In addition, a bearing 21 is arranged on the winding rotary shaft member 2 and a position in the left-right direction on the winding rotary shaft member 2 is specified, so that the bearing 21 can rotate relative to the winding rotary shaft member 2 around the center line x. At this time, the outer peripheral portion of the support ring 15 is arranged so that one peripheral portion of the outer peripheral ring 17 overlaps, and the overlapping portion is fixedly coupled with screws.

  The take-up rotary shaft member 2 and the take-up portion 3 include a take-up rotation adjustment transmission means 12 that adjusts the rotational force transmitted from the take-up rotary shaft member 2 to the take-up portion 3, and the winding. The core A that is externally fitted to the take-up part 3 is brought into a locked state with respect to the take-up part 3 as necessary, or a core lock releasing means 13 that releases the locked state is formed. .

  The winding rotation adjustment transmission means 12 is a first cylinder formed of the first radial hole 8b of the winding rotary shaft member 2, and serves as an input member fitted into the cylinder 8b so as to be movable in the radial direction Y. It consists of a first piston 14.

  The first piston 14 passes through the first straight hole 8a to the outside of the take-up rotary shaft member 2 and is arranged at equal intervals in the circumferential direction of the take-up rotary shaft member 2. Is inserted into each of the first and second cylinders 8b, and is guided in the first cylinder 8b so as to be movable in the radial direction Y of the winding rotary shaft member 2. The first piston 14 is pushed outward in the radial direction Y of the winding rotary shaft member 2 by the pressure of the compressed air for control supplied through the first air passage 8, and the first cylinder 8b is The support ring 15 is arranged so as to cover the inner peripheral surface of the support ring 15. The support ring 15 is disposed so as to cover the respective outward openings of the first cylinder 8b. The inner peripheral surface 15a of the support ring 15 is positioned so as to correspond to the first piston 14, and the outer end surface 14a of the first piston 14 that has been pushed and moved in the radial direction Y is brought into contact therewith. Yes. The first piston 14 comes into contact with the inner peripheral surface 15a of the support ring 15 in a slidable state by the pressure of the compressed air for control sent into the first straight hole 8a. When the winding rotary shaft member 2 is rotating with one piston 14 in contact with the support ring 15, free rotation of the support ring 15 itself (relative rotation with respect to the winding rotary shaft member 2) is caused by the contact. It is to be restrained, and is configured to rotate relative to the take-up rotating shaft member 2 by applying a rotation restraining force of a specific size or more to the support ring 15 from the outside.

  The core locking release means 13 is configured as follows, that is, as shown in FIGS. 2 and 3, the core A externally fitted to the winding unit 3 is fixed to the winding unit 3. The lock state holding means 13A is configured to be held in the locked state, and the lock release means 13B is configured to release the lock state.

The locking state holding means 13A includes a support ring 15, a slide ring 16 and a locking claw 18 as well as a first urging means 19 and a second urging means 24, and more specifically, as follows. Yes.
That is, it comprises a cylindrical peripheral surface 15b concentric with the winding rotary shaft member 2, and a vertical wall surface 15c rising in the radial direction Y of the winding rotary shaft member 2 continuously to the cylindrical peripheral surface 15b. An attachment step 22 is formed on the outer periphery of the support ring 15, the slide ring 16 is extrapolated to the attachment step 22 so as to be movable in the center line x direction, and the vertical wall surface 15 c extends in the center line x direction. There is no movement restriction surface on one side, and the slide ring 16 is stopped at the position of the vertical wall surface 15c.

  The slide ring 16 is provided with spring mounting holes 23 in the center line x direction opened on the vertical wall surface 15c side at appropriate intervals in the circumferential direction, and biasing means inserted and disposed in each of the spring mounting holes 23. 24, the slide ring 16 is urged toward the opposite side of the vertical wall surface 15c, and as shown in FIGS. 5 and 6, the outer periphery of the slide ring 16 is circumferentially provided. A plurality of inclined portions 25 (three in the illustrated example) are provided at equal intervals, and the upper surface of each inclined portion 25 is inclined downward toward the urging direction of the spring 24.

  The outer peripheral ring 17 has a guide hole 26 in the radial direction Y formed as a through hole at a position corresponding to the inclined portion 25 of the slide ring 16. A locking claw 18 is inserted into the guide hole 26 so as to be movable in the radial direction Y in the winding portion 3, and the locking claw 18 has an inclined portion 25 in the slide ring 16 at its lower end surface. In the same manner as described above, the spring 24 is inclined downward in the urging direction and is placed on the inclined portion 25 so as to be movable relative to the inclined portion 25, and the guide hole is formed on the outer peripheral surface of the outer peripheral ring 17. An annular groove 27 is formed at the center position of the center line x-direction width of 26 and the center position of the outer end face of the locking claw 18 in the center line x-direction width, and the annular groove 27 is the first urging means 19. An annular spring is fitted in a tension shape, and the annular spring 19 presses each locking claw 18 inward in the radial direction Y. The slide ring 16 moves in the center line x direction so that the locking claw 18 is moved in the radial direction Y while being guided by the guide hole 26, and the slide ring 16 is moved by the urging force of the spring 24. When the spring 24 is pushed in the biasing direction, the locking claw 18 protrudes outward from the outer ring 17 while resisting the biasing force of the annular spring 19, and is wound around the winding portion 3. A is fixedly locked by the urging force of the spring 24. As will be described later, when the slide ring 16 is moved to the vertical wall surface 15c side by the action of the locking release means 13B, the locking claw 18 is moved inward in the radial direction Y.

  The locking release means 13B is formed in association with the slide ring 16 as shown in FIGS. 2 and 3, and is an annular male guide body 28 that is externally fitted to the winding rotary shaft member 2 in a gas-tight manner. And an annular female piston body 30 that is externally fitted to the annular male guide body 28 so as to be gas-tight and slidable in the center line x direction, and the annular female piston body 30 is attached to the left in FIG. Biasing means 33 for biasing.

  The annular male guide body 28 has a large-diameter first outer peripheral surface a1, a small-diameter second outer peripheral surface a2, a left radial surface a3, an intermediate radial surface a4, a right radial surface a5, and an inner peripheral surface a6. An annular groove b1 is formed in the surface a1 and an O-ring is fitted in the annular groove b1, and annular grooves b2 and b2 are formed in the left and right portions of the inner peripheral surface a6. Is also fitted with an O-ring, and an annular air passage b3 is formed at an intermediate position in the direction of the center line x. Are formed in a penetrating shape.

  The annular female piston body 30 has an annular pressing projection c1, a large-diameter first inner peripheral surface c2, a small-diameter second inner peripheral surface c3, a left radius surface c4, an intermediate radius surface c5, and a right radius surface c6. An annular groove d1 is formed on the second inner peripheral surface c3, an O-ring is fitted into the annular groove d1, and at a specific interval in the circumferential direction of the right radial surface c6 in the center line x direction. A spring hole 29 is formed.

  Between the annular male guide body 28 and the annular female piston body 30, the second outer peripheral surface a <b> 2 and the intermediate radial surface a <b> 4 of the annular male guide body 28, and the first inner peripheral surface c <b> 2 and the middle of the annular female piston body 30. A gas-tight pressure chamber 32 surrounded by the radial surface c5 is formed.

  The spring as the urging means 33 is inserted in each spring hole 29 of the annular female piston body 30 and is supported by a spring receiving portion 34 fixed to the annular male guide body 28 to be in a compressed state. At this time, the spring receiving portion 34 is wound on the left radial surface a5 of the annular male guide body 28 via a screw member 35 inserted through the annular male guide body 28 at appropriate intervals in the circumferential direction. And a spring support pin (not shown) inserted into the spring 33 at a portion facing the spring hole 29 at the left surface portion of the annular plate member 36 as necessary. It shall be fixed in a cantilevered manner.

  An annular air passage b3 of the annular male guide 28 corresponds to the second radial hole 9b so that air can be fed into the pressure chamber 29 from the second air passage 9 of the winding rotary shaft member 2, It is attached so as to surround the outer side of the opening portion at the outer end of the two-radius hole 9b. Then, the pressure of the compressed air sent from the second straight hole 9a through the second radial hole 9b enters the pressure chamber 32 through the third air passage b4, and the compressed air sent into the pressure chamber 32 The annular female piston body 30 is projected and moved toward the slide ring 16 side by the pressure of air.

  The annular female piston body 30 projects and moves toward the slide ring 16 to come into contact with the slide ring 16 and receives the pressure of the compressed air to cause the slide ring 16 to resist the urging force of the spring 24. It is provided so as to be pushed in the direction opposite to the urging direction, and when the slide ring 16 is pushed and moved in the direction opposite to the urging direction of the spring 24, the inclined portion 25 also moves. The latching claw 18 biased inward in the direction Y is moved so as to be sunk toward the center of the winding rotary shaft member 2 in a state of relative movement with respect to the inclined portion 25 by the biasing force. When the pawl 18 is in the locked state of the core A, the locked state is released.

  Further, when the elasticity of the spring 33 is determined so as to adapt to the resistance to the left side movement of the annular female piston body 30, and the pressure of the compressed air fed from the second air passage 9 side is reduced by an artificial operation or the like. The annular female piston body 30 is pushed back to the left side in FIG. 3 to be placed at the standby position. At this time, as will be described later, the slide ring 16 advances to the right in FIG. 3 by the urging force of the spring 24, and the locking claw 18 is pushed up in the radial direction Y of the winding rotary shaft member 2.

Next, a usage example and operation of the sheet take-up shaft device 1 having the above structure will be described.
When the winding core 3 is mounted on the winding unit 3, compressed air whose pressure has been increased to a required pressure (for example, about 0.1 to 0.3 MPa) is sent into the second air passage 9. The compressed air is sent from the second air passage 9 through the second radial hole 9b into the pressure chamber 32 of the locking release means 13B, and the annular female piston body 30 is pushed out. The annular female piston body 30 thus pushed out presses the slide ring 16 against the vertical wall surface 15 c of the support ring 15. As a result, the slide ring 16 is positioned against the vertical wall surface 15c, so that the locking claw 18 does not protrude outward from the height position of the outer peripheral surface of the outer peripheral ring 17, but an annular spring. By the urging force of 19, the guide hole 26 is in a sunk state, and the core A can be easily fitted and fitted.

  After the winding core A is mounted, the operation is performed to lower the pressure of the compressed air sent into the second air passage 9, and the air pressure in the second cylinder 32 in the unlocking means 13B is thereby lowered. The piston body 30 and the slide ring 16 are moved to the right side in FIG. 3 by the urging force of the spring 24, and the locking claw 18 is moved in the radial direction Y of the winding rotary shaft member 2 by the inclined portion 25 that moves in the urging direction. It is pushed up outward and protrudes outward from the inside of the guide hole 26 and comes into contact with the inner peripheral surface of the core A to lock the core A in a fixed manner.

  Compressed air (for example, having a pressure of about 0.5 to 1.5 MPa) whose pressure is controlled by a control device (not shown) in the first straight hole 8a in the first air passage 8 of the winding rotary shaft member 2. Since the pressure of the compressed air sent into the first straight hole 8a reaches the first piston 14 through the first radial hole 8b and presses the pressure receiving surface 14a thereof, the first piston 14 Is pushed upward in the radial direction Y of the winding rotary shaft member 2 and is pressed against the support ring 15 in a slidable state. Under this pressure contact state, the take-up rotary shaft member 2 is rotated by applying a rotational driving force T from the outside through the pulley 5c, and the support ring 15 and the outer ring 17 are related to the take-up rotation transmission. By means of the means 12, it rotates at a rotational speed at which an appropriate slip occurs with respect to the rotational speed of the winding rotary shaft member 2 (for example, a speed slower than the rotational speed of the winding rotary shaft member 2 by about 50 revolutions per minute). Then, the winding of the sheet is started. The locking release means 13B rotates integrally with the winding rotary shaft member 2.

  If the take-up tension becomes greater than a predetermined value during the take-up of the sheet, this is detected by a sensor (not shown), and a control device (not shown) supplies the first air passage 8 based on the detected information. The pressure is controlled so as to reduce the pressure of the compressed air, so that the force with which the first piston 14 presses the support ring 15 is reduced, and the frictional force between them is reduced. The rotational force transmitted by the means 12 is reduced, and the sheet is prevented from being wound under a state where an excessive tension is applied. On the contrary, if the take-up tension is going to become smaller than a predetermined value during the take-up of the sheet, the sensor detects this, and a control device (not shown) enters the first air passage 8 based on the detected information. The pressure is controlled so as to increase the pressure of the compressed air being supplied. As a result, the force with which the first piston 14 presses the support ring 15 increases, and the frictional force between them increases. The rotational force transmitted by the adjustment transmission means 12 is increased, and the sheet is prevented from being wound with a tension smaller than necessary. In this way, the pressure of the compressed air supplied into the first air passage 8 directly presses the pressure receiving surface 14b of the first piston 14 and the first piston 14 is displaced relative to the support ring 15 by sliding contact. Therefore, the tension during the winding of the sheet can be adjusted to an arbitrary magnitude by controlling the pressure of the compressed air sent into the first air passage 8. Note that the tension of the sheet during winding of the sheet may be kept constant at all times, but actually, in order to prevent an excessive sheet winding pressure from acting on the core A after the winding is finished. As the winding diameter on the winding core A increases, the sheet tension gradually decreases. For example, the tension of the sheet at the end of winding is about 50% of that at the start of winding.

  When finishing the winding of the sheet, the application of the rotational driving force to the winding rotary shaft member 2 is stopped, the air pressure in the first air passage 8 is lowered, and the compressed air is further fed into the second air passage 9. The pressure of the compressed air fed into the second air passage 9 is transmitted into the pressure chamber 32 to push and displace the annular female piston body 30, and the displacement reverses the direction in which the slide ring 16 is biased by the spring 24. Move to. Thereby, the latching claw 18 is lowered toward the center side of the winding rotary shaft member 2, and the latching state of the winding core A is released. Thereafter, the core A around which the sheet is wound is shifted laterally with respect to the winding unit 3 and is removed from the sheet winding shaft device 1.

Next, a second embodiment of the present invention will be described in detail with reference to FIGS. In the figure, the same reference numerals are assigned to substantially the same parts as in the previous embodiment.
The winding portion A has a relatively large diameter compared to the winding rotary shaft member 2, and includes annular left and right support rings 15A and 15B, a cylindrical outer ring 17A, and annular left and right end face plates 37A, 37B, the left end face plate 37A is fitted and fixed to the inner peripheral surface portion of the left end of the outer peripheral ring 17A, and the left support ring 15A is fitted and fixed to the center hole of the left end face plate 37A. On the other hand, the right end face plate 37B is fitted and fixed to the right inner peripheral surface portion of the outer peripheral ring 17A, and the right support ring 15B is fitted and fixed to the center hole of the right end face plate 37B. The whole is integrally formed. The bearings 21 and 21 are arranged on the inner peripheral surfaces of the left and right support rings 15A and 15B, and the winding portions A are rotatably fitted to the winding rotary shaft member 2. At this time, the left support ring 15A corresponds to the support ring 15 of the previous embodiment.

  A radial guide body 38 is bolted at each equiangular location (for example, every 60 degrees) around the center line x on the inner surface of the left end plate 37A inside the winding part A. The guide body 38 is formed with a guide through hole 38a having a quadrangular section in the radial direction Y of the end face plate 37A. A relatively long locking claw 18 is inserted into each guide through hole 38a so as to be slidable in the radial direction Y, and the inner end surface 18a and the outer end surface 18b of each locking claw 18 are pointed first. However, the annular groove 27 of the previous embodiment is not formed on the outer end face 18b.

A small through hole 38b that is slightly longer in the radial direction Y is formed in the peripheral wall of the guide through hole 38a of each radial guide body 38 in the right side wall in FIG. 7, and the radial guide body 38 has a through hole 38b. A pin member 39 is implanted in the locking claw 18 from the right outer side in FIG. 7, and the pin member 39 limits the radial movement distance of the locking claw 18 within a specific range. An annular tension spring 19 </ b> A is hooked on the outer end of the pin member 39 of all the locking claws 18, and the tension spring 19 </ b> A has a function similar to that of the spring 19.
The other overall configuration is substantially the same as that of the previous embodiment.

  The operation of the second embodiment will be described. When compressed air is supplied to the pressure chamber 32 through the second air passage 9 and the annular female piston body 30 is pushed leftward in FIG. 7 against the urging force of the spring 33, it is locked via the slide ring 16. When the claw 18 is pushed outward in the radial direction Y against the urging force of the tension spring 19A, and the winding core A is externally fitted to the outer peripheral ring 17A, the locking claw 18 has its outer end face 18b. Is brought into contact with the winding core A, and the idle rotation with respect to the outer peripheral ring 17A is locked.

  Conversely, when the compressed air is discharged from the pressure chamber 32 through the second air passage 9 and the annular female piston body 30 is pushed back to the right in FIG. 7 by the biasing force of the spring 33, the slide ring 16 also biases the spring 24. 7 is moved to the right side in FIG. 7, and the latching claw 18 is pulled back inward in the radial direction Y by the urging force of the tension spring 19A, and the latching claw 18 winds the outer end surface 18b of the latching claw 18. The locked state is released by being separated from the core A.

Next, a third embodiment of the present invention will be described with reference to FIG. In the figure, the same parts as those in the previous embodiment are denoted by the same reference numerals.
In this embodiment, the winding rotary shaft member 2 is formed in accordance with the one described in Patent Document 1, that is, the inner tube member 40 and the outer tube member 41 are arranged concentrically, and the center line At each end in the x direction, gas tightly coupled to each other, a cylinder hole 8b1 in the radial direction Y is formed in the outer tube member 41, and the first piston 14 is inserted into the cylinder hole 8b1, and in the vicinity of the cylinder hole 8b1, An air passage 9b1 is formed, an air passage 8b2 in the radial direction Y is formed in the inner pipe member 40, and the rubber tube 42 is extrapolated in close contact with the outer peripheral surface of the inner pipe member 40 so that both ends of the rubber tube 42 The pipe member 40 is gas-tightly secured on both outer peripheral surfaces of the pipe member 40 with a wire 43, the control compressed air supplied from the air supply pipe 5a1 is introduced into the inner pipe member 40, and the other air supply pipe The compressed air supplied from 5b1 is used as a rubber tube 42. It has been made as to supply between the tube member 41.
The other overall configuration is substantially the same as that of the first embodiment.

  The operation of the third embodiment will be described. When compressed air is supplied between the rubber tube 42 and the outer tube member 41 from the air supply pipe 5b1, the compressed air is supplied into the pressure chamber 32 through the air passage 9b1. Then, as described above, the locking claw 18 is immersed toward the inside of the outer peripheral ring 17. In this state, the core A is fitted on the outer ring 17. Thereafter, the compressed air is discharged from between the rubber tube 42 and the outer tube member 41, so that the locking claw 18 is displaced outward in the radial direction Y by the urging force of the spring 24 as described above. As a result, the core A is locked to the outer peripheral ring 17.

Next, when compressed air for control is supplied from the air supply pipe 5a1 into the inner pipe member 40, the compressed air flows between the inner pipe member 40 and the rubber tube 42 via the air passage 8b2, and passes through the rubber tube 42. The diameter of the rubber tube 42 is increased by the expansion, and the outer peripheral surface of the rubber tube 42 presses the inner end surface of the first piston 14 with a pressing force related to the pressure of the compressed air. Similarly to the above, the rotational force of the winding rotary shaft member 2 is adjusted to be large or small corresponding to the pressure of the compressed air and transmitted to the winding unit 3.
With such a configuration of the rubber tube 42, the take-up rotating shaft member 2 is light in weight and excellent in handleability and contributes to a reduction in production cost, and the rotational power for taking up the sheet is reduced.

It is front view sectional drawing which shows the principal part of the sheet | seat winding shaft apparatus which concerns on 1st Example of this invention. It is sectional drawing seen from the front which shows the winding part of the said sheet | seat winding shaft apparatus. It is an expanded sectional view of the above-mentioned winding part. FIG. 2 is a cross-sectional view showing the x1-x1 portion in FIG. 1 and B is a cross-sectional view showing the x2-x2 portion in FIG. 1 in relation to the take-up rotating shaft member of the sheet take-up shaft device. It is a front view which shows the outer periphery ring of the said winding part. It is explanatory drawing which shows the outer periphery ring and the latching claw of the said sheet | seat winding shaft. It is front view sectional drawing which shows the principal part of the sheet | seat winding shaft apparatus which concerns on the 2nd Example of this invention. It is side surface sectional drawing which shows the winding part of the said sheet | seat winding shaft apparatus. It is front view sectional drawing which shows the principal part of the sheet | seat winding shaft apparatus which concerns on 3rd Example of this invention.

Explanation of symbols

2 Winding Rotating Shaft Member 8 First Air Passage 9 Second Air Passage 12 Winding Rotation Adjustment Transmitting Means 13 Winding Core Locking Release Means 18 Locking Claw 19A Tension Spring 28 Annular Male Guide Body 30 Annular Female Piston Body 32 Pressure Chamber 33 Biasing means (spring)
A Winding part x Center line

Claims (3)

  Winding rotation adjustment transmission means for fitting the winding portion to the winding rotation shaft member so as to be relatively rotatable and adjusting the rotational force transmitted from the winding rotation shaft member to the winding portion. And a core locking release means for setting the core fitted to the winding unit to be locked to the winding unit or releasing the locked state as necessary. In the take-up shaft device, the winding core locking release means includes an annular male guide body that is externally fitted to the take-up rotary shaft member in a gas-tight manner; A seat having a structure formed by an annular female piston body fitted externally so as to be slidable in the direction of the center axis of the rotating shaft member, and an urging means for urging the annular female piston body in a specific direction Winding shaft device.   The core locking release means is disposed at an equiangularly arranged portion around the rotation center of the winding portion so as to be displaceable in a specific radial direction around the rotation center, and is externally fitted to the winding portion. A plurality of locking claws that are brought into contact with and separated from the winding core, an annular spring stretched on a locking portion provided on each of the locking claws, and the locking claw on the annular female piston body The sheet take-up shaft device according to claim 1, wherein the sheet take-up shaft device comprises an interlocking mechanism for interlocking.   An input member that forms part of the winding rotation adjustment transmission means and adjusts the rotational force transmitted from the winding rotary shaft member to the winding portion to a large or small value. A first air passage for bringing compressed air into direct contact; and a second air passage communicated in a pressure chamber formed between the annular male guide body and the annular female piston body. The sheet take-up shaft device according to claim 1 or 2, wherein the member is formed independently at a thick portion of the member.

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