WO2014136904A1 - 搬送経路の転換装置 - Google Patents
搬送経路の転換装置 Download PDFInfo
- Publication number
- WO2014136904A1 WO2014136904A1 PCT/JP2014/055847 JP2014055847W WO2014136904A1 WO 2014136904 A1 WO2014136904 A1 WO 2014136904A1 JP 2014055847 W JP2014055847 W JP 2014055847W WO 2014136904 A1 WO2014136904 A1 WO 2014136904A1
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- WIPO (PCT)
- Prior art keywords
- moving means
- belt
- moving
- transfer path
- path changing
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/24—Advancing webs by looping or like devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/30—Arrangements for accumulating surplus web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
- B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
- B29C65/087—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using both a rotary sonotrode and a rotary anvil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
- B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83411—Roller, cylinder or drum types
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
- B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/4871—Underwear
- B29L2031/4878—Diapers, napkins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/44—Moving, forwarding, guiding material
- B65H2301/449—Features of movement or transforming movement of handled material
- B65H2301/4491—Features of movement or transforming movement of handled material transforming movement from continuous to intermittent or vice versa
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/57—Diaper manufacture
Definitions
- the present invention relates to a transfer path switching device.
- the transport speed is partially reduced or the transport speed is made zero in the middle of a transport path for transporting an object to be transported such as a component member or an intermediate product during manufacture.
- a deceleration region is provided, and various processes are performed on the conveyed object in the deceleration region.
- first and second moving bodies that reciprocate while guiding a workpiece are provided on the upstream side and the downstream side of a processing unit, and the first moving body and the second moving body are attached to a seesaw.
- a machining apparatus in which a workpiece is intermittently stopped in a machining part by interlocking with a rotating coupling part.
- an object of the present invention is to provide a transfer path changing device and a method for processing an object to be transferred, which can eliminate the drawbacks of the above-described prior art.
- the present invention relates to a transfer path changing device for changing the transfer path of a continuous sheet-like object to be transferred.
- the transfer path conversion device swings in a crossing direction intersecting with the flow direction of the transfer object of the transfer path, and the swinging unit that increases or decreases the length of the transfer path of the transfer object,
- a first moving means connected to the swinging part for moving the swinging part in the intersecting direction; a second moving means for moving a part or all of the first moving means in the intersecting direction; and the first A control unit for controlling the moving means and the second moving means is provided.
- the present invention is a processing method for performing a predetermined processing on the object to be transported, wherein the transport speed of the transported object is temporarily reduced or stopped by the transport path changing device,
- the present invention provides a processing method for a transported object, wherein the transported object is processed in a state.
- FIG. 1 is a schematic diagram showing a transfer path switching apparatus according to the first embodiment of the present invention.
- FIG. 2 is an explanatory diagram of a method of accelerating / decelerating the conveyance speed of the object to be conveyed in the processing unit using the apparatus of the first embodiment.
- FIG. 3 is a graph showing a preferred example of the swing pattern of the swing portion and the method of distributing the amount of movement between the first moving means and the second moving means.
- FIG. 4 is a graph illustrating an example of acceleration / deceleration of the conveyance speed in the processing unit.
- FIG. 5 is a diagram showing an example of processing in the present invention.
- FIG. 6 is a diagram showing another embodiment of the present invention.
- FIG. 7 is a diagram showing still another embodiment of the present invention.
- FIG. 8 is a diagram showing still another embodiment of the present invention.
- a transport path changing device 1 is a transport path changing device that temporarily changes the transport path of a continuous sheet-like object 3 to be transported. Yes, the swinging unit 2 swings in the crossing direction Y intersecting the flow direction X of the transported object 3 and is connected to the swinging unit 2 and the swinging unit 2 that increase or decrease the length of the transport path of the transported object.
- Belt rotating means 6 for moving the section 2 in the intersecting direction Y
- belt moving means 7 for moving part or all of the belt rotating means 6 (first moving means) in the intersecting direction Y (First moving means)
- a control unit 9 for controlling the belt rotating means 6 (first moving means) and the belt moving means 7 (second moving means).
- the apparatus 1 of this embodiment has the process part P which processes with respect to the to-be-conveyed object 3 in the middle of the conveyance path
- the conveyance speed V2 of the object to be conveyed 3 is accelerated / decelerated in a constant pattern in which deceleration, constant speed, and acceleration are repeated as shown in FIG. 4, for example.
- the vehicle starts decelerating when the swinging portion 2 reaches the rising neutral point SA, passes through the top dead center SB, and then descends the neutral point SC.
- the speed is constant, and acceleration is started when the constant speed region VP is passed.
- the apparatus 1 of the present embodiment includes the swinging portions 2 and 2A on the upstream side and the downstream side of the processing portion P, respectively, and the upstream and downstream swinging portions 2 and 2A are common.
- the belt is swung by the belt rotating means 6 (first moving means) and the belt moving means 7 (second moving means).
- both the swinging portions 2 and 2 ⁇ / b> A described above are swung by the common belt rotating means 6 and belt moving means 7.
- the belt rotation means 6 includes an endless first belt 5 connected to the swinging portion 2, a plurality of pulleys 41 to 45 engaged with the first belt 5, and a drive source that rotates the first belt 5.
- a first servo motor 61 is provided. More specifically, the first belt 5 is an endless timing belt, which is hung on the drive pulley 43, driven pulleys 41 and 42 provided on the sliders 71 and 72, and non-movable driven pulleys 44 and 45. Has been passed.
- the first belt 5 can be rotated in both forward and reverse directions by driving the drive pulley 43 to rotate by the first servo motor 61.
- This rotation of the first belt 5 is a rotation that can occur even if the drive pulley 43 is rotated with the positions of the sliders 71 and 72 fixed and the positions of all the pulleys fixed.
- the belt rotating means 6 (first moving means) in the present embodiment is a known power transmission mechanism comprising a first servo motor 61 as a drive source and a gear combination for transmitting the rotation of the motor 61 to the drive pulley 43. 62.
- the belt moving means 7 (second moving means) is configured so that the position of the portion of the first belt 5 where the oscillating portion 2 is fixed is set in the flow direction X of the conveyed object 3 for each of the oscillating portions 2 and 2A. It is preferable to be able to move in the direction Y that intersects with.
- the belt moving means 7 in the apparatus 1 of the present embodiment determines sliders 71 and 72 in which driven pulleys 41 and 42 are rotatably provided and directions in which both sliders 71 and 72 slide. Slide guides 73 and 74, a second belt 75 connected to both sliders 71 and 72, and a drive pulley 76 and a driven pulley 77 on which the second belt 75 is stretched are provided.
- the second belt 75 also functions as a connecting means for connecting the plurality of sliders 71 and 72 and interlocking them.
- the driving pulley 76 is rotationally driven by the second servomotor 79, so that the driven pulley 77 is driven and rotated.
- the second belt 75 is rotated.
- the sliders 71 and 72 coupled thereto move in the direction a or b in the figure.
- the second belt 75 is also preferably a timing belt.
- the belt moving means 7 includes a known power transmission mechanism 80 including a second servo motor 79 as a drive source and a gear combination for transmitting the rotation of the motor 79 to the drive pulley 76.
- sliders 71 and 72 are connected to driven pulleys 41 and 42 constituting a part of the belt rotating means 6 (first moving means), By moving the position of the driven pulley 41, which is a part of the belt rotating means 6 (first moving means), in the intersecting direction Y, the swinging part 2 is moved in the intersecting direction Y and swung. Similarly, by moving the position of the driven pulley 42 which is a part of the belt rotating means 6 (first moving means) in the crossing direction Y, the swinging part 2A is moved in the crossing direction Y and swings.
- the belt moving means 7 in the present embodiment includes a driving pulley 43, driven pulleys 44 and 45, and a first servo motor 61 (driving source) in the belt rotating means 6 (first moving means). The position of the power transmission mechanism 62 and the like is not moved.
- each of the oscillating portions 2 and 2A includes a slider 22 that moves along the slide guide 21 and a transport roller 23 that can be driven and rotated on the slider 22.
- the 22 portion is fixed to the first belt 5.
- any method such as adhesive, thermal fusion, fixing with bolts, fixing using a dedicated instrument, or the like can be adopted.
- the slider 22 and the first belt 5 are coupled together at a portion indicated by reference numeral 51, for example.
- the swinging portion 2 disposed on the upstream side of the processing portion P and the swinging portion 2A disposed on the downstream side of the processing portion P are fixed to portions of the first belt 5 that run backward to each other. . Therefore, for example, when one of the swing unit 2 and the swing unit 2A moves upward in the vertical direction, the other moves downward in the vertical direction.
- the oscillating part 2 and the oscillating part 2A preferably oscillate in the vertical direction.
- the oscillating part 2 and the oscillating part 2A may be oscillated in the horizontal plane with the direction parallel to the paper surface of FIG.
- the oscillating unit 2 in the apparatus 1 of the present embodiment is disposed between a pair of driven rollers 81 and 82 that are arranged in the conveyance path of the article 3 to be conveyed.
- the length of the loop-shaped conveyance path formed between the rollers 81 and 82 increases or decreases.
- swiveling part 2 is moving to A direction in FIG. 1, since the length of the loop-shaped conveyance path
- the transport speed V2 is lower than the entrance-side transport speed V1 of the object 3 to be transported introduced into the apparatus 1, and the length of the transport path is long while the swinging portion 2 is moving in the direction B in FIG. Therefore, the conveyance speed V2 of the article 3 to be conveyed in the processing portion P becomes higher than the entry-side conveyance speed V1.
- the swinging portion 2A in the apparatus 1 of the present embodiment is disposed between a pair of driven rollers 83 and 84 disposed in the transport path of the transported object 3, and a pair of the swinging portions 2A is moved by swinging of the swinging portion 2A.
- the length of the loop-shaped conveyance path formed between the driven rollers 83 and 84 increases or decreases. Then, while the swinging part 2A is moving in the direction A in FIG. 1, the length of the loop-shaped transport path formed by the swinging part 2A is reduced, so the object 3 to be transported in the processing part P
- the delivery-side transport speed V3 of the object 3 to be transported derived from the apparatus 1 is higher than the transport speed V2 of FIG.
- the exit side transport speed V3 of the transported object 3 derived from the apparatus 1 is lower than the transport speed V2 of the transported object 3 in the processing unit P.
- the swinging part 2 and the swinging part 2A move by the rotation and movement of the common first belt 5, so that one swinging part 2 is at a predetermined reference position.
- the neutral position C see FIG. 2B
- the other swinging portion 2A moves from the same reference position at the same speed. Move down or up by the same distance. Therefore, the entrance-side transport speed V1 and the exit-side transport speed V3 of the object to be transported 3 can be constantly maintained constant.
- the first and second servo motors 61 and 79 can be electrically controlled in rotation and stop, rotation direction, rotation position, speed, and the like, respectively.
- the moving parts 2 and 2A are swung in a desired pattern based on a reference signal that periodically changes for each predetermined length of the article 3 to be conveyed, for example, one product such as an absorbent article. be able to.
- the control unit 9 includes a servo amplifier 91 that controls the first servo motor 61 that rotates the first belt 5, a servo amplifier 92 that controls the second servo motor 79 that moves the first belt 5, And an arithmetic processing unit 93.
- the arithmetic processing unit 93 emits from a belt rotation pattern and a belt movement pattern set in advance, and a rotary encoder provided in the facility, for example, a rotary encoder connected to a rotary cutter for cutting products one by one.
- the operation control signals corresponding to the respective patterns are output to the servo amplifiers 91 and 92 based on the reference signal 95 that is continuously changed and reset every time one product is manufactured.
- the product is, for example, a laminate sheet obtained by performing a sealing process with a sealing device disposed on the processing portion P of the apparatus 1 or a sealing portion formed with a sealing device disposed on the processing portion P of the apparatus 1.
- Absorbent articles (such as disposable diapers) assembled on the production line.
- the reference signal may be input to the arithmetic processing unit 93 that is generated by a controller that controls equipment for installing the transfer path changing device 1, or may be generated inside the arithmetic processing unit 93.
- arithmetic processing unit 93 a programmable logic controller (PLC) or a commercially available personal computer with various interfaces added can be used.
- PLC programmable logic controller
- the conveyance speed V2 in the processing portion P is periodically changed as shown in FIG. 4 while maintaining the entry-side conveyance speed V1 and the exit-side conveyance speed V3 of the object to be conveyed 3 constantly.
- acceleration / deceleration is performed at the same time, and a constant speed region in which the speed of the conveyed object passing through the processing portion P is constant is generated during the period.
- the belt-like object 3 is fed into the entrance-side transport speed V1 by a feed means (not shown) located upstream from the roll 81 and a feed means (not shown) located downstream from the roll 84.
- FIG. 2 (a) shows a state in which the swinging portion 2 is above the neutral position C and is being lowered, and corresponds to between SB and SC in FIG.
- FIG. 2B shows a state where the swinging portion 2 is located at the neutral position C and is being lowered, and corresponds to SC in FIG.
- FIG. 2C shows a state in which the swinging portion 2 is below the neutral position C and is rising, and this corresponds to SD-SA in FIG.
- swiveling part 2 is a state which is raising above the neutral position C, and is raising (not shown).
- the conveyance speed V ⁇ b> 2 of the object to be conveyed 3 periodically changes as deceleration, constant speed, acceleration, deceleration,... With the oscillation of the oscillation unit 2 along the oscillation pattern S.
- the input-side transfer speed V1 and the output-side transfer speed V3 of the object to be transferred 3 are set to 100%, as shown in FIG.
- the swing pattern S is set so that the area formed by the curve is equal to the area formed by the SD-SB sine curve. Thereby, it is possible to balance the region where the feed speed is higher than 100% and the region where the feed speed is low, and to secure a constant speed region VP which is slower than the entrance side transport speed V1 and the exit side transport speed V3.
- the swing portion 2 generated by rotating the first belt 5 by the first servo motor 61 together with the swing pattern S indicating the change in the distance from the neutral position C of the swing portion 2, 2 ⁇ / b> A.
- a movement amount S1 of 2A and a movement amount S2 of the swinging portions 2 and 2A generated by moving the sliders 71 and 72 by the second servo motor 79 are shown.
- the distance from the neutral position C at each time point of the oscillating units 2 and 2A is determined by the amount of movement S1 by the first moving unit driven by the first servomotor 61 and the second moving unit driven by the second servomotor 79. This is the total with the movement amount S2.
- the distance from the neutral position C see FIG.
- how S1 and S2 are distributed may be determined so that the rotation pattern S1 and the movement pattern S2 are 50% of the swing pattern S, but the capacity and inertia of the first and second servo motors,
- the speed and acceleration at which the servomotor can rotate differ depending on the inertia of components such as pulleys and guides connected to each. Therefore, in this apparatus, by changing the balance between the rotation pattern S1 and the movement pattern S2, for example, it is possible to efficiently increase the speed of the apparatus by matching the load factor of each servo motor.
- the rotation pattern S1 and the movement pattern S2 are distributed to 50% of the swing pattern S, or the rotation pattern S1 and the movement pattern S2 are distributed so that the load factors of the respective servomotors are matched.
- the first moving unit and the second moving unit may be controlled in a state where the load factors of the driving source of the first moving unit and the driving source of the second moving unit substantially match. In this case, “substantially” means that the difference in load factor between the first moving means and the second moving means is within about ⁇ 20%.
- the swinging units 2 and 2A are controlled to show the swinging pattern S as shown in FIG. While maintaining the side conveyance speed V3 at a constant speed, the conveyance speed V2 in the processing portion P can be periodically changed as shown in FIG. In the constant speed region VP in FIG. 4, the speed V2 of the object to be conveyed that passes through the processing unit P is constant for a certain period of time. Various processing can be stably performed while maintaining the conveying speeds V1 and V3 at a high speed.
- FIG. 5 is a diagram showing an example of processing performed in the processing section P, and is completed in a diaper continuous body 31 before being divided into individual diapers by a heat seal device 30 arranged in a production line for pants-type disposable diapers.
- the example which performs the heat seal process which forms the side seal part 33 to make it exist in the both sides of the diaper 32 which was done is shown.
- the side seal portion 33 is a seal portion that joins the front body 34 and the back body 35 on both sides of the diaper 32.
- the process applied to the conveyed object 3 is not particularly limited, and a wide variety of processes can be performed.
- other sealing processes such as ultrasonic sealing and high frequency sealing may be performed, and further, cutting, pressing, surface treatment, heat treatment, photocuring, zigzag folding, etc. may be performed.
- the belt rotating means 6 and the belt moving means 7 are preferably driven by servo motors 61 and 79 because the positions of the swinging parts 2 and 2A can be controlled with high accuracy. .
- the belt moving means 7 (second moving means) includes a plurality of sliders 71 and 72 having driven pulleys 41 and 42 that engage with the first belt 5, and the sliders 71 and 72.
- the drive source (servo motor 79 or the like) that moves the position of the first belt 5 can be minimized, and the moving speed and acceleration of the oscillating units 2 and 2A can be minimized. Is preferable from the viewpoint of enabling higher speed.
- one drive source (servo data 79 etc.) which moves the several sliders 71 and 72
- one drive source (servo data etc.) may be provided with respect to several sliders like this embodiment
- One slider may be provided for each of the sliders 71 and 72 as in the second embodiment shown in FIG.
- the second belt 75 coupled to the plurality of sliders 71 and 72 is driven by the servo motor 79 so that the movements of both the sliders 71 and 72 are interlocked. .
- the swinging of the swinging portions 2 and 2A can be controlled with high accuracy.
- the transfer path changing apparatus 1A according to the second embodiment is driven by second moving means 7 and 7 each having a plurality of sliders 71 and 72 having driven pulleys 41 and 42, respectively. is doing. Also in the apparatus 1A of the second embodiment, by swinging the swinging portions 2 and 2A by the rotation of the first belt 5 by the first moving means and the movement of the first belt 5 by the second moving means, The effect similar to 1st Embodiment is show
- the second moving means 7 and 7 in the second embodiment are preferably linked by control by the control unit 9.
- the upstream oscillating part 2 and the downstream oscillating part 2A of the processing part P are respectively connected to the first linear motor 87 and It is swung in cooperation with the second linear motor 85.
- the first moving means in the third embodiment is a diagram illustrating the first linear motor 87 that swings the swinging parts 2 and 2A on the moving base 70 and the sliding direction of the swinging parts 2 and 2A on the moving base 70.
- the second moving means includes a second linear motor 85 that moves the moving base 70 and a slide guide 86 that restricts the sliding direction of the moving base 70 in the Y direction in the figure. It is composed of
- the reciprocating motion (swinging) of the swinging portions 2 and 2A is realized by the cooperation of the first and second linear motors.
- the acceleration and the like can be reduced, and a higher speed can be achieved than when the swinging portions 2 and 2A are moved by a single linear motor.
- the mechanism can be made simple by using a linear motor, and the number of parts can be reduced, so that maintenance work can be reduced.
- the upstream swinging portion 2 and the downstream swinging portion 2A of the processing portion P are respectively connected to the belt rotating means 6 (first 1 oscillating means) and the linear motor 85 (second moving means). More specifically, a plurality of pulleys 41 and 43 on which a first belt 5 is stretched on a moving table 70 that moves in a crossing direction Y that intersects the transporting direction of the transported object by a linear motor 85, and of them A servo motor 61 that drives the drive pulley 43 and rotates the first belt 5 is provided.
- the belt rotating means 6 (first moving means) driven by the servo motor 61 and the belt moving means 7D (second moving means) for moving the position of the first belt 5 by the linear motor 85 cooperate, By oscillating the oscillating portions 2 and 2A, the same effect as in the first embodiment can be obtained. Further, the mechanism can be made simple by using a linear motor, and the number of parts can be reduced, so that maintenance work can be reduced.
- linear motor a commercially available linear motor having a mover having a coil and a stator having a magnet can be used.
- the mover is provided on the back surface of the moving table 70, while the stator is mounted on the moving table. 70 It arrange
- the object to be conveyed may be a strip-shaped single layer or a laminated sheet, or may be one in which other members such as an absorber are intermittently disposed between the sheets. Further, the object to be conveyed may be one in which another member is intermittently arranged on the sheet for conveyance. Further, instead of oscillating the rocking portions on the upstream side and the downstream side of the processing portion P in cooperation with the first moving means and the second moving means, only either one of the first moving means is used.
- the other moving means may be swung, and the other may be swung by various known methods.
- processing in the processing section P may be performed in a state where the conveyed object is decelerated, or may be performed in a state where the movement of the conveyed object is completely stopped.
- the present invention further discloses the following transfer path changing device and processing method.
- a transfer path changing device for changing the transfer path of a continuous sheet-like object to be transferred, An oscillating portion that oscillates in a crossing direction intersecting the flow direction of the object to be conveyed, and increases or decreases the length of the conveying path of the object
- a first moving means connected to the rocking part and moving the rocking part in the crossing direction; Second moving means for moving part or all of the first moving means in the intersecting direction; and
- a transfer path changing apparatus comprising a control unit for controlling the first moving means and the second moving means.
- the first moving unit includes an endless belt, a plurality of pulleys engaged with the belt, and one or more drive sources that rotationally drive any one or more of the pulleys.
- Transfer route conversion device ⁇ 3> The transport path changing device according to ⁇ 2>, wherein the belt is an endless timing belt.
- ⁇ 5> The transport path changing device according to any one of ⁇ 2> to ⁇ 4>, wherein the belt can be rotated in both forward and reverse directions.
- the second moving means includes a plurality of sliders each having the pulley engaged with the belt, and one or more drive sources for moving the positions of the plurality of sliders.
- the transfer path switching device according to any one of the preceding claims.
- the second moving unit includes a second belt that moves the plurality of sliders, and the second belt functions as a coupling unit that couples the plurality of sliders and interlocks them.
- the first moving means is belt rotating means for rotating an endless belt stretched between a plurality of pulleys, and the second moving means intersects the belt with the sheet flow direction.
- the belt moving means for moving in the direction, wherein the swinging portion swings in the intersecting direction with the rotation and movement of the belt, according to any one of ⁇ 1> to ⁇ 8> Path conversion device.
- the second moving means moves a slider that rotatably supports a driven pulley that constitutes a part of the first moving means, and moves the position of the driven pulley in a direction Y intersecting the conveying direction of the object to be conveyed.
- the transport path switching device according to any one of ⁇ 1> to ⁇ 9>, wherein the swinging portion is moved to swing in the intersecting direction Y.
- the second moving means does not move the positions of the driving pulley, the driven pulley, the first servo motor (driving source) and the power transmission mechanism in the first moving means. Any one of the above items ⁇ 1> to ⁇ 10>
- ⁇ 12> The transport path switching device according to any one of ⁇ 1> to ⁇ 11>, wherein a plurality of sliders having driven pulleys are driven by second moving means provided separately.
- ⁇ 13> The transport path according to any one of ⁇ 1> to ⁇ 12>, wherein the drive source of the first moving unit is a servo motor, and the drive source of the second moving unit is a servo motor or a linear motor. Conversion equipment.
- the first moving means includes a power transmission mechanism comprising a combination of a first servo motor as the drive source and a gear for transmitting the rotation of the motor to the drive pulley.
- the belt moving means as the second moving means includes a power transmission mechanism comprising a combination of a second servo motor as a drive source and a gear for transmitting the rotation of the motor to the drive pulley.
- the transfer path changing device according to any one of 13>.
- a processing unit that processes the object to be conveyed and includes a swing unit on each of an upstream side and a downstream side of the processing unit, and at least the upstream swing unit includes the first moving unit and the first moving unit; 2.
- the transport path changing device according to any one of ⁇ 1> to ⁇ 15>, which is swung by two moving means.
- ⁇ 17> One oscillating part arranged on the upstream side of the processing part and the other oscillating part arranged on the downstream side of the processing part run backward with respect to each other in a belt constituting a part of the first moving means.
- the transfer path switching device according to ⁇ 16> which is fixed to a part.
- One oscillating part arranged on the upstream side of the processing part and the other oscillating part arranged on the downstream side of the processing part are fixed to a common belt constituting a part of the first moving means.
- ⁇ 16> or ⁇ 17> The transfer path changing device according to ⁇ 17>. Transfer device for transfer route.
- the one oscillating portion and the other oscillating portion include a slider that moves along a slide guide and a conveyance roller that is rotatably driven on the slider, and the slider portion is a first moving means.
- the oscillating part disposed on the upstream side of the processing part is arranged between a pair of driven rollers arranged in the conveyance path of the object to be conveyed, and the pair of driven rollers is oscillated by the oscillation of the oscillating part.
- the transport path changing device according to any one of ⁇ 16> to ⁇ 19>, wherein the length of the loop-shaped transport path formed therebetween increases or decreases.
- the oscillating unit disposed on the downstream side of the processing unit is arranged between a pair of driven rollers arranged in the conveyance path of the object to be conveyed, and the pair of driven rollers is oscillated by the oscillation of the oscillating unit.
- the transport path changing device according to any one of ⁇ 16> to ⁇ 20>, wherein the length of the loop-shaped transport path formed therebetween increases or decreases.
- One oscillating portion disposed on the upstream side of the processing portion and the other oscillating portion disposed on the downstream side of the processing portion are configured such that the one oscillating portion has a predetermined reference position, for example, the one oscillating portion.
- the moving part and the other swinging part are raised or lowered from the neutral position (C) where the height positions are aligned, the other swinging part is lowered or raised by the same distance at the same speed from the same reference position.
- the transport path changing device according to any one of ⁇ 16> to ⁇ 21>.
- the control unit controls the first moving unit and the second moving unit in a state where the load factors of the driving source of the first moving unit and the driving source of the second moving unit substantially coincide with each other.
- ⁇ 1> to ⁇ 22 > The transfer path changing device according to any one of the above.
- ⁇ 24> The transfer path switching device according to any one of ⁇ 16> to ⁇ 23>, wherein the processing to be performed on the transfer object is heat sealing.
- ⁇ 25> The transport path changing device according to any one of ⁇ 16> to ⁇ 23>, wherein the processing to be performed on the object to be transported is sealing processing of an ultrasonic seal or a high frequency seal.
- the processed part is present on both sides of the completed diaper in a diaper continuous body before being divided into individual diapers by a sealing device (preferably a heat sealing device) arranged in the production line of the pants-type disposable diaper.
- a sealing device preferably a heat sealing device
- the transfer path changing device according to ⁇ 25> which is a sealing process for forming a side seal portion.
- the said side seal part is a transfer path switching apparatus as described in said ⁇ 26> which is a seal part which joins a front body and a back body in the both sides of a diaper.
- ⁇ 28> The transport path changing device according to any one of ⁇ 16> to ⁇ 23>, wherein the processing to be performed on the transported object is cutting, pressing, surface treatment, heat treatment, photocuring, or spell folding.
- ⁇ 29> The transfer path changing device according to any one of ⁇ 1> to ⁇ 28>, wherein the swinging part is swung in cooperation with a linear motor.
- a drive source of the first moving unit and the second moving unit is a linear motor.
- the distance from the neutral position (C) at each time point of the swinging portion disposed on the upstream side of the processing portion and the swinging portion disposed on the downstream side of the processing portion is the amount of movement by the first moving means.
- ⁇ 32> A processing method for performing a predetermined processing on an object being transported, By the transfer path changing device according to any one of ⁇ 1> to ⁇ 31>, the transfer speed of the object to be transferred is temporarily reduced or stopped, and in this state, the object to be transferred is processed. Processing method for transported objects.
- ⁇ 33> The transported object according to ⁇ 32>, wherein the transport speed V2 of the transported object in a processing unit that is a part that processes the transported object is accelerated or decelerated in a constant pattern in which deceleration, constant speed, and acceleration are repeated. Processing method.
- ⁇ 34> When the oscillating portion reaches the rising neutral point SA, the vehicle starts to decelerate, passes through the top dead center SB, and is set at a constant speed in the constant velocity region VP near the falling neutral point SC.
- the constant velocity region VP The method of processing an object to be conveyed according to ⁇ 33>, wherein acceleration is started when passing through, and deceleration is started when passing through the bottom dead center SD and then again reaching the rising neutral point SA.
- the transfer path changing device and the method for processing an object to be transferred according to the present invention it is possible to increase the speed and acceleration of the swinging portion while suppressing the load on the drive source.
Landscapes
- Absorbent Articles And Supports Therefor (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Making Paper Articles (AREA)
Abstract
Description
例えば、特許文献1には、加工部の上流側と下流側とに、ワークを案内しつつ往復移動する第1及び第2移動体を設け、第1移動体及び第2移動体を、シーソーのように回動する連結部により連動させることによって、加工部においてワークが間欠的に停止するようにした加工装置が記載されている。
しかし、引用文献1の加工装置においては、ワークの搬送速度を高速に維持しつつ一時的な停止状態を生じさせるためには、第1及び第2移動体を駆動するバスラインロール等を駆動するサーボモータ等に大きな負荷が掛かるため、故障や必要なメンテナンスの頻度が増大する。他方、第1及び第2移動体を駆動するサーボモータ等に大きな負荷が掛かるのを避けるためには、ワークの搬送速度の抑制等が必要となり、加工の効率や製品の製造効率が低下する。
本発明の第1実施形態に係る搬送経路の転換装置1は、図1に示すように、搬送される連続シート状の被搬送物3の搬送経路を一時的に変化させる搬送経路の転換装置であり、被搬送物3の流れ方向Xと交差する交差方向Yに揺動して、被搬送物の搬送経路の長さを増減する揺動部2、揺動部2に接続され、該揺動部2を前記交差方向Yに移動させるベルト回動手段6(第1移動手段)、ベルト回動手段6(第1移動手段)の一部又は全体を前記交差方向Yに移動させるベルト移動手段7(第1移動手段)、及びベルト回動手段6(第1移動手段)及びベルト移動手段7(第2移動手段)を制御する制御部9を備えている。
また、本実施形態の装置1は、加工部Pの上流側及び下流側のそれぞれに揺動部2,2Aを備えており、上流側及び下流側の揺動部2,2Aが、共通する、ベルト回動手段6(第1移動手段)及びベルト移動手段7(第2移動手段)によって揺動される。
ベルト回動手段6は、揺動部2と接続された無端状の第1ベルト5と、第1ベルト5と係合する複数のプーリ41~45と、第1ベルト5を回動させる駆動源として第1サーボモータ61を備えている。
より詳細には、第1ベルト5は、無端状のタイミングベルトであり、駆動プーリ43、スライダ71,72上に設けられた従動プーリ41,42、及び非可動式の従動プーリ44,45に掛け渡されている。そして、駆動プーリ43を、第1サーボモータ61により回転駆動することで、第1ベルト5を正逆両方向に回動させることができる。この第1ベルト5の回動は、仮にスライダ71,72の位置を固定し、総てのプーリの位置を固定した状態下に、駆動プーリ43を回転させても生じ得る回動である。
本実施形態におけるベルト回動手段6(第1移動手段)は、駆動源としての第1サーボモータ61及び該モータ61の回転を駆動プーリ43に伝達するギアの組み合わせ等からなる公知の動力伝達機構62を備えている。
ベルト移動手段7は、駆動プーリ76を、第2サーボモータ79により回転駆動することで、従動プーリ77が従動して回動し、これらのプーリ76,77の回転に伴って、第2ベルト75及びそれに結合したスライダ71,72が、図中a又はb方向に移動する。第2ベルト75もタイミングベルトであることが好ましい。
ベルト移動手段7は、駆動源としての第2サーボモータ79及び該モータ79の回転を駆動プーリ76に伝達するギアの組み合わせ等からなる公知の動力伝達機構80を備えている。
他方、本実施形態におけるベルト移動手段7(第2移動手段)は、ベルト回動手段6(第1移動手段)における、駆動プーリ43,従動プーリ44,45、第1サーボモータ61(駆動源),動力伝達機構62等の位置を移動させない。
また、加工部Pの上流側に配された揺動部2と、加工部Pの下流側に配された揺動部2Aとは、第1ベルト5における互いに逆走する部位に固定されている。そのため、揺動部2と揺動部2Aとは、例えば一方が鉛直方向の上方に移動する際には、他方は鉛直方向の下方に移動する。また、揺動部2及び揺動部2Aは、鉛直方向に揺動することが好ましいが、図1の紙面と平行な方向を水平方向として、水平面内を揺動させるようにしても良い。
そして、揺動部2が、図1中A方向に移動している間は、揺動部2によって形成されるループ状の搬送経路の長さが増加するため、加工部Pにおける被搬送物3の搬送速度V2が装置1に導入される被搬送物3の入側搬送速度V1よりも低速となり、揺動部2が図1中B方向に移動している間は、同搬送経路の長さが減少するため、加工部Pにおける被搬送物3の搬送速度V2が前記入側搬送速度V1よりも高速となる。
そして、揺動部2Aが、図1中A方向に移動している間は、揺動部2Aによって形成されるループ状の搬送経路の長さが減少するため、加工部Pにおける被搬送物3の搬送速度V2よりも、装置1から導出される被搬送物3の出側搬送速度V3が高速となり、揺動部2Aが図1中B方向に移動している間は、同搬送経路の長さが増加するため、加工部Pにおける被搬送物3の搬送速度V2よりも、装置1から導出される被搬送物3の出側搬送速度V3が低速となる。
具体的には、制御部9は、第1ベルト5を回転させる第1サーボモータ61を制御するサーボアンプ91と、第1ベルト5を移動させる第2サーボモータ79を制御するサーボアンプ92と、演算処理部93とを備えている。
演算処理部93は、予め設定したベルトの回動パターンとベルトの移動パターンと、設備内に設けられたロータリーエンコーダ、例えば製品を1枚ずつに切断するロータリーカッター等に接続されたロータリーエンコーダから発せられる連続的に変化し、製品1枚を製造する度にリセットされる基準信号95に基づき、それぞれのパターンに応じた運転制御信号をサーボアンプ91,92に対して出力する。前記製品とは、例えば、本装置1の加工部Pに配したシール装置でシール加工を施して得られたラミネートシート等や、本装置1の加工部Pに配したシール装置でシール部が形成され、製造ラインにて組み立てられた吸収性物品(使い捨ておむつ等)の製品である。
好ましい制御方法においては、ロール81より上流に位置するフィード手段(図示せず)及びロール84より下流に位置するフィード手段(図示せず)により、帯状の被搬送物3を、入側搬送速度V1と出側搬送速度V3とが一定になるように搬送しつつ、本実施形態の装置1における揺動部2,2Aを、それぞれの中立位置C〔図2(b)参照〕からの距離の変化を示す揺動パターンSが、図3に示すようなサインカーブ状の曲線を描くように揺動させる。図3において、横軸は時間であり、縦軸は、揺動部2,2Aそれぞれの中立位置C〔図2(b)参照〕からの距離(ストローク)を示す。揺動部2については、中立位置Cより上方に位置する場合を正の値、揺動部2Aは、中立位置Cより下方に位置する場合を正の値として示してある。なお、図3に示すサインカーブ状の曲線においてSE-SF間は、直線であり、揺動部2、2Aは一定速度で揺動される。
このように、第1サーボモータ61による移動量S1と第2サーボモータ79による移動量S2との合計量によって揺動部2,2Aの中立位置C〔図2(b)参照〕からの距離(ストローク)が決まる方法により揺動部2,2Aを揺動させることによって、個々の移動手段を駆動するサーボモータ等の駆動源に要求される、移動量、速度、加速度等が軽減される。そのため、本実施形態の装置1によれば、サーボモータ等の駆動源の負荷を抑制しつつ、揺動部の移動の高速化や高加速度化を図ることができる。
第1移動手段の駆動源及び第2移動手段の駆動源の負荷率が概ね一致した状態で、第1移動手段及び第2移動手段を制御しても良い。この場合の「概ね」は、第1移動手段と第2移動手段の負荷率の差が±20%程度以内であることを意味する。
被搬送物3に施す加工は、特に制限されず、多種多様な加工を行うことができる。例えば、ヒートシール加工に代えて超音波シール、高周波シール等の他のシール加工を行っても良いし、更に、切断、プレス、表面処理、熱処理、光硬化、つづら折り等を行っても良い。
なお、複数のスライダ71,72を移動させる駆動源(サーボータ79等)は、本実施形態のように、複数のスライダに対して一つの駆動源(サーボータ等)が設けられていても良いし、図6に示す第2実施形態のように、一つのスライダ71,72毎に一つ設けられていても良い。
また、リニアモータを用いることで機構をシンプルな構造にすることができ、部品点数を減らせることからメンテナンス作業を低減できる。
また、加工部Pの上流側及び下流側の揺動部をそれぞれ、第1移動手段及び第2移動手段を協働させて揺動させるのに代えて、何れか一方のみを、第1移動手段及び第2移動手段の協働により揺動させ、他方は、各種公知の方法によって揺動させても良い。
<1>
搬送される連続シート状の被搬送物の搬送経路を変化させる搬送経路の転換装置であって、
被搬送物の流れ方向と交差する交差方向に揺動して、該被搬送物の搬送経路の長さを増減する揺動部、
前記揺動部に接続され、該揺動部を前記交差方向に移動させる第1移動手段、
前記第1移動手段の一部又は全体を前記交差方向に移動させる第2移動手段、及び、
前記第1移動手段及び前記第2移動手段を制御する制御部を備える、搬送経路の転換装置。
前記第1移動手段は、無端状のベルトと、前記ベルトと係合する複数のプーリと、前記プーリのうち何れか一つ以上を回転駆動する一つ以上の駆動源を備える前記<1>記載の搬送経路の転換装置。
<3>
前記ベルトは、無端状のタイミングベルトである、前記<2>記載の搬送経路の転換装置。
<4>
前記ベルトは、駆動プーリ、スライダ上に設けられた従動プーリ、及び非可動式の従動プーリに掛け渡されている、前記<2>又は<3>記載の搬送経路の転換装置。
<5>
前記ベルトは、正逆両方向に回動させることができる、前記<2>~<4>の何れか1に記載の搬送経路の転換装置。
<6>
前記第2移動手段は、前記ベルトと係合する前記プーリをそれぞれ有する複数のスライダと、前記複数のスライダの位置を移動させる1つ以上の駆動源を備える、前記<2>~<5>の何れか1に記載の搬送経路の転換装置。
<7>
前記第2移動手段は、前記複数のスライダを移動させる第2ベルトを備え、前記第2ベルトは、前記複数のスライダを連結して、それらを連動させる連結手段として機能する、前記<6>に記載の搬送経路の転換装置。
<8>
第2ベルトがタイミングベルトである、前記<7>に記載の搬送経路の転換装置。
<9>
前記第1移動手段が、複数のプーリ間に掛け渡された無端状のベルトを回動させるベルト回動手段であり、前記第2移動手段が、前記ベルトを前記シートの流れ方向と交差する交差方向に移動させるベルト移動手段であり、前記揺動部は、前記ベルトの回動と移動に伴い、前記交差方向に揺動する、前記<1>~<8>の何れか1に記載の搬送経路の転換装置。
前記第2移動手段は、第1移動手段の一部を構成する従動プーリを回動自在に支持するスライダを移動させて、該従動プーリの位置を、被搬送物の搬送方向の交差方向Yに移動させることで、前記揺動部を前記交差方向Yに移動させて揺動させる、前記<1>~<9>の何れか1に記載の搬送経路の転換装置。
<11>
前記第2移動手段は、前記第1移動手段における、駆動プーリ,従動プーリ、第1サーボモータ(駆動源)及び動力伝達機構の位置を移動させない、前記<1>~<10>の何れか1に記載の搬送経路の転換装置。
<12>
従動プーリを有する複数のスライダを、それぞれに別個に設けた第2移動手段により駆動する、前記<1>~<11>の何れか1に記載の搬送経路の転換装置。
<13>
前記第1移動手段の駆動源がサーボモータであり、前記第2移動手段の駆動源が、サーボモータ又はリニアモータである、前記<1>~<12>の何れか1に記載の搬送経路の転換装置。
<14>
前記第1移動手段は、前記駆動源としての第1サーボモータ及び該モータの回転を前記駆動プーリに伝達するギアの組み合わせからなる動力伝達機構を備えている、前記<1>~<13>の何れか1に記載の搬送経路の転換装置。
<15>
前記第2移動手段としてのベルト移動手段が、駆動源としての第2サーボモータ及び該モータの回転を駆動プーリに伝達するギアの組み合わせからなる動力伝達機構を備えている、前記<1>~<13>の何れか1に記載の搬送経路の転換装置。
<16>
被搬送物に対して加工を行う加工部を有し、該加工部の上流側及び下流側のそれぞれに揺動部を備え、少なくとも上流側の揺動部が、前記第1移動手段及び前記第2移動手段により揺動される、前記<1>~<15>の何れか1に記載の搬送経路の転換装置。
<17>
前記加工部の上流側に配された一方の揺動部と、該加工部の下流側に配された他方の揺動部は、第1移動手段の一部を構成するベルトにおける互いに逆走する部位に固定されている、前記<16>に記載の搬送経路の転換装置。
<18>
前記加工部の上流側に配された一方の揺動部と、該加工部の下流側に配された他方の揺動部は、第1移動手段の一部を構成する共通するベルトに固定されている前記<16>又は<17>に記載の搬送経路の転換装置。
搬送経路の転換装置。
<19>
前記一方の揺動部と前記他方の揺動部は、スライドガイドに沿って移動するスライダ及びスライダ上に従動回転可能に設けられた搬送ローラを備えており、そのスライダ部分が、第1移動手段の一部を構成する第1ベルトに固定されている、前記<17>又は<18>に記載の搬送経路の転換装置。
前記加工部の上流側に配された揺動部は、被搬送物の搬送経路に配置された一対の従動ローラ間に配置されており、該揺動部の揺動により、前記一対の従動ローラ間に形成されるループ状の搬送経路の長さが増減する、前記<16>~<19>の何れか1に記載の搬送経路の転換装置。
<21>
前記加工部の下流側に配された揺動部は、被搬送物の搬送経路に配置された一対の従動ローラ間に配置されており、該揺動部の揺動により、前記一対の従動ローラ間に形成されるループ状の搬送経路の長さが増減する、前記<16>~<20>の何れか1に記載の搬送経路の転換装置。
<22>
前記加工部の上流側に配された一方の揺動部及び該加工部の下流側に配された他方の揺動部は、該一方の揺動部が所定の基準位置、例えば該一方の揺動部と前記他方の揺動部との高さ位置が揃う中立位置(C)から上昇又は下降すると、該他方の揺動部は、同じ基準位置から同じ速度で同じ距離だけ下降又は上昇する、前記<16>~<21>の何れか1に記載の搬送経路の転換装置。
<23>
前記制御部は、第1移動手段の駆動源及び第2移動手段の駆動源の負荷率が概ね一致した状態で、第1移動手段及び第2移動手段を制御する、前記<1>~<22>の何れか1に記載の搬送経路の転換装置。
<24>
被搬送物に施す加工は、ヒートシール加工である、前記<16>~<23>の何れか1に記載の搬送経路の転換装置。
<25>
前記被搬送物に施す加工は、超音波シールまたは高周波シールのシール加工である、前記<16>~<23>の何れか1に記載の搬送経路の転換装置。
<26>
前記加工部は、パンツ型使い捨ておむつの製造ライン中に配したシール装置(好ましくはヒートシール装置)により、個々のおむつに分断する前のおむつ連続体に、完成したおむつの両側部に存在させるためのサイドシール部を形成するシール加工である前記<24>又は<25>に記載の搬送経路の転換装置。
<27>
前記サイドシール部は、おむつの両側部において、前身頃と後身頃とを接合するシール部である前記<26>に記載の搬送経路の転換装置。
<28>
前記被搬送物に施す加工は、切断、プレス、表面処理、熱処理、光硬化、又はつづら折りである、前記<16>~<23>の何れか1に記載の搬送経路の転換装置。
<29>
前記揺動部が、リニアモータとの協働により揺動される、前記<1>~<28>の何れか1に記載の搬送経路の転換装置。
<30>
前記第1移動手段及び前記第2移動手段の駆動源が、リニアモータである、前記<1>、<16>~<28>の何れか1に記載の搬送経路の転換装置。
<31>
前記加工部の上流側に配された揺動部及び該加工部の下流側に配された揺動部の、各時点における中立位置(C)からの距離は、前記第1移動手段による移動量(S1)と前記第2移動手段による移動量(S2)との合計である、前記<16>~<30>の何れか1記載の搬送経路の転換装置。
搬送中の被搬送物に対して所定の加工を施す加工方法であって、
前記<1>~<31>の何れか1に記載の搬送経路の転換装置により、被搬送物の搬送速度を一時的に減速又は停止させ、その状態で、該被搬送物に加工を施す、被搬送物の加工方法。
<33>
前記被搬送物に加工を施す部位である加工部における被搬送物の搬送速度V2を、減速、一定速、加速を繰り返す一定のパターンで加減速させる、前記<32>に記載の被搬送物の加工方法。
<34>
前記揺動部が上昇中の中立点SAに達した時点で減速を始め、上死点SBを通過した後、下降中の中立点SC付近の定速度領域VPにおいて一定速とし、定速度領域VPを通過した時点で加速を始め、下死点SDを通過した後、再度上昇中の中立点SAに達した時点で減速を始める、前記<33>に記載の被搬送物の加工方法。
Claims (16)
- 搬送される連続シート状の被搬送物の搬送経路を変化させる搬送経路の転換装置であって、
被搬送物の流れ方向と交差する交差方向に揺動して、該被搬送物の搬送経路の長さを増減する揺動部、
前記揺動部に接続され、該揺動部を前記交差方向に移動させる第1移動手段、
前記第1移動手段の一部又は全体を前記交差方向に移動させる第2移動手段、及び、
前記第1移動手段及び前記第2移動手段を制御する制御部を備える、搬送経路の転換装置。 - 前記第1移動手段は、無端状のベルトと、前記ベルトと係合する複数のプーリと、前記プーリのうち何れか一つ以上を回転駆動する一つ以上の駆動源を備える請求項1記載の搬送経路の転換装置。
- 前記ベルトは、駆動プーリ、スライダ上に設けられた従動プーリ、及び非可動式の従動プーリに掛け渡されている、請求項2記載の搬送経路の転換装置。
- 前記ベルトは、正逆両方向に回動させることができる、請求項2又は3記載の搬送経路の転換装置。
- 前記第2移動手段は、前記ベルトと係合する前記プーリをそれぞれ有する複数のスライダと、前記複数のスライダの位置を移動させる1つ以上の駆動源を備える、請求項2~4の何れか1項記載の搬送経路の転換装置。
- 前記第2移動手段は、前記複数のスライダを移動させる第2ベルトを備え、前記第2ベルトは、前記複数のスライダを連結して、それらを連動させる連結手段として機能する、請求項5記載の搬送経路の転換装置。
- 前記第1移動手段が、複数のプーリ間に掛け渡された無端状のベルトを回動させるベルト回動手段であり、前記第2移動手段が、前記ベルトを前記シートの流れ方向と交差する交差方向に移動させるベルト移動手段であり、前記揺動部は、前記ベルトの回動と移動に伴い、前記交差方向に揺動する、請求項1~6の何れか1項記載の搬送経路の転換装置。
- 前記第2移動手段は、第1移動手段の一部を構成する従動プーリを回動自在に支持するスライダを移動させて、該従動プーリの位置を、被搬送物の搬送方向の交差方向Yに移動させることで、前記揺動部を前記交差方向Yに移動させて揺動させる、請求項1~7の何れか1項記載の搬送経路の転換装置。
- 前記第1移動手段の駆動源がサーボモータであり、前記第2移動手段の駆動源が、サーボモータ又はリニアモータである、請求項1~8の何れか1項記載の搬送経路の転換装置。
- 被搬送物に対して加工を行う加工部を有し、該加工部の上流側及び下流側のそれぞれに揺動部を備え、少なくとも上流側の揺動部が、前記第1移動手段及び前記第2移動手段により揺動される、請求項1~9の何れか1項記載の搬送経路の転換装置。
- 前記加工部の上流側に配された一方の揺動部と、該加工部の下流側に配された他方の揺動部は、第1移動手段の一部を構成するベルトにおける互いに逆走する部位に固定されている、請求項10記載の搬送経路の転換装置。
- 前記加工部の上流側に配された一方の揺動部及び該加工部の下流側に配された他方の揺動部は、一方の揺動部が所定の基準位置から上昇又は下降すると、他方の揺動部は、同じ基準位置から同じ速度で同じ距離だけ下降又は上昇する、請求項10又は11記載の搬送経路の転換装置。
- 被搬送物に施す加工は、ヒートシール加工である、請求項10~12の何れか1項記載の搬送経路の転換装置。
- 前記加工部の上流側に配された揺動部及び該加工部の下流側に配された揺動部の各時点における中立位置Cからの距離は、前記第1移動手段による移動量S1と前記第2移動手段による移動量S2との合計である、請求項10~13の何れか1項記載の搬送経路の転換装置。
- 前記制御部は、第1移動手段の駆動源及び第2移動手段の駆動源の負荷率が概ね一致した状態で、第1移動手段及び第2移動手段を制御する、請求項1~14の何れか1項記載の搬送経路の転換装置。
- 搬送中の被搬送物に対して所定の加工を施す加工方法であって、
請求項1~15の何れか1項記載の搬送経路の転換装置により、被搬送物の搬送速度を一時的に減速又は停止させ、その状態で、該被搬送物に加工を施す、被搬送物の加工方法。
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