JP3673877B2 - Work delivery device and transport cart - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a workpiece transfer device in which a sheet-shaped workpiece is turned 90 degrees with respect to its conveying surface to change the direction, and is particularly suitable for being incorporated in a production line for a type diaper to be applied.
[0002]
[Prior art]
The type diaper that has an opening corresponding to the waist and a pair of openings corresponding to the thighs of both legs is compared to the unfolded diaper that closes and attaches the left and right side flaps. Then, in addition to being easy to attach and detach by the adult wearer himself, it becomes possible to easily and quickly attach in a standing posture. In addition, the wearable diaper can be worn with a sense of underwear rather than a diaper for an adult wearer, and thus seems to be accepted with less resistance than a deployable diaper.
[0003]
For these reasons, the demand for diapers that can be worn for adults requiring diapers and for infants at the time of weaning is increasing in place of unfolded diapers. And in order to improve the fitting property of an opening part and to make the whole mounting feeling favorable, there exists a tendency for the material with a stretching property to be used abundantly.
[0004]
As such a type diaper to be worn, the one shown in FIGS. 9 and 10 has been proposed. That is, the diaper 11 to be worn includes a waist opening 12 corresponding to the waist part, a pair of leg openings 13 corresponding to the crotch parts of both legs, and an exterior member forming these openings 12, 13. 14, a waist tape 15 joined so as to sandwich the exterior member 14 along the waist opening 12, and a waist gather 16 is formed by narrowing the waist opening 12 sandwiched between the waist tapes 15. Waist elastic member 17 for leg, leg elastic member 19 for squeezing leg opening 13 to form leg gather 18, and crotch portion between leg opening 13 from the crotch part to the ventral side and the buttocks side, respectively And an absorbent main body 20 that extends.
[0005]
A pair of left and right closing portions 21 communicating with the waist opening 12 and the leg opening 13 are formed on the exterior member 14 so as to be peelable along the left and right flank portions. By doing so, it can be developed as shown in FIG. That is, the diaper 11 that can be applied as shown in FIG. 9 can be obtained by overlapping the closing portions 21 before and after the exterior member 14 from the unfolded state shown in FIG. 10 and joining these contact portions.
[0006]
As shown in FIGS. 9 and 10 and FIG. 11 schematically showing the cross-sectional structure of the mold diaper 11, the exterior member 14 includes an outermost layer sheet 22 that can extend in the width direction, and the absorbent main body 20. The inner side in the width direction is the side edge of the center sheet 23 with the center sheet 23 arranged at the center of the outermost sheet 22 along the leg and the leg elastic member 19 for narrowing the leg opening 13 therebetween. A pair of left and right side sheets 24 that overlap and can expand and contract in the width direction are integrally joined. The side sheet 24 is a composite in which a stretchable sheet 25 having moisture permeability that can be stretched in the width direction and a stretched sheet 26 that are bonded together to the stretchable sheet 25 and can be stretched in the width direction are bonded in a laminated state. It is made of material. In addition, a pair of left and right joining tapes 27 that partially overlap the outer side in the width direction of the side sheet 24 are attached to the closing part 21 described above, and the closing part 21 peels off at the part of the joining tape 27. To get.
[0007]
On the other hand, the absorbent main body 20 includes a liquid absorber 28, a liquid-impermeable back sheet 29 provided between the liquid absorber 28 and the center sheet 23 of the exterior member 14, and the back sheet 29 A liquid-permeable top sheet 30 sandwiching the liquid absorber 28, and a pair of left and right side top sheets 31 whose one end in the width direction is joined to the back sheet 29 and the both ends in the width direction of the top sheet 30; The elastic member 33 includes a stretchable elastic member 33 that is held along the other widthwise other end of the side top sheet 31 to form a three-dimensional gather 32.
[0008]
The back sheet 29 of the absorbent main body 20 and the center sheet 23 joined to the center portion in the width direction of the outermost layer sheet 22 of the exterior member 14 are integrally joined to each other by an adhesive portion 34.
[0009]
The present inventors have proposed the method shown in FIGS. 12 to 15 as a method for manufacturing a mold diaper as shown in FIGS. 9 to 11, and the overall fit as well as the openings as compared with the conventional ones. This makes it possible to create a disposable diaper that can be manufactured at low cost by mass production.
[0010]
Briefly describing this manufacturing method, the continuous body 14C forming the belt-like shape of the exterior member 14 formed in parallel with each other and the continuous body 20C forming the belt-like shape of the absorbent main body 20 are overlapped via the bonding portion 34, Continuous laminate F _C (See FIG. 12).
[0011]
Thereafter, the continuous laminate F downstream from the above. _C At a predetermined position on the transport path of the continuous laminate F _C A continuous body of the outermost layer sheet 22 located in an intermediate portion of the liquid absorbers 28 adjacent to each other in the conveying direction, a continuous leg elastic member 19C, a continuous body of the center sheet 23, a continuous body of bonding tape 27C, and a continuous side sheet 24C, the backsheet 29 continuum, the topsheet continuum 30C, and the side topsheet continuum 31C are shown in FIG. ₁ Are cut at predetermined intervals to obtain a rectangular laminate F having a single liquid absorber 28. And the conveyance surface (surface parallel to the paper surface of FIG. 12) is maintained while maintaining the state before cutting so that the laminate F is not deformed by the contraction due to the free opening of the leg elastic member 19 and the elastic member 33. The laminate F is turned 90 degrees around an axis perpendicular to the axis. Further, the laminate F is pulled in the width direction (left and right direction in FIG. 12) of the mold diaper, and the laminate F is widened by a predetermined length by elastic deformation of the leg elastic members 19 and the side seats 24 (FIG. 12). After that, switch to the lateral flow method.
[0012]
In this way, the rectangular laminate F having one liquid absorber 28 is rotated 90 degrees and widened, while the continuous laminate F _C The left and right side edges of the connecting sheet 35 are joined at a distance equal to the cut dimension of the laminated body F between a pair of left and right waist tape continuous bodies 15C conveyed in a parallel state along the conveying direction. A belt-like body 36 is obtained (see FIG. 13).
[0013]
Next, the laminated body F swirled 90 degrees and widened between the adjacent connecting sheets 35 of the belt-like body 36 is overlapped, and both front and rear end portions along the conveying direction of the laminated body F, that is, the diaper 11 to be applied. Both end portions in the width direction are joined to the connecting sheet 35 (see FIG. 13). Then, a pair of left and right continuous waist elastic members 17C are joined on the waist tape continuous body 15C in an extended state downstream of the above. Further, the widthwise outer edge portions of the waist tape continuous body 15C are folded inward so as to wrap around the elastic members 17C around the continuous waist, and are superposed on both side edges in the width direction of the laminated body F so as to be joined to each other ( (See FIG. 14).
[0014]
Thereafter, at a predetermined position in the transport path of the strip-shaped body 36 further downstream, the central portion of the strip-shaped body 36 is moved along the curved portion of the leg-around elastic member 19 of the laminated body F adjacent to each other via the connecting sheet 35. The laminated body F is drawn out into a substantially circular shape at a predetermined interval to form a portion that becomes the leg-hole opening 13 (see FIG. 15). Then, the belt-like body 36 is folded together with the laminated body F so that the pair of waist tape continuous bodies 15C located on both sides in the width direction of the belt-like body 36 are overlapped, and the portion where the joining tape 27 is exposed, that is, the closing portion 21. After joining the front and rear end portions along the conveying direction of the bi-folded laminated body F to be 21 along the width direction, the joining portion of the laminated bodies F adjacent to each other, that is, the portion to be the closing portion 21 The portion of the connecting sheet 35 positioned between them is indicated by a cutting line C ₂ Are cut out and a disposable diaper 11 and a waste portion 37 having a connecting sheet 35 are obtained (see FIG. 15).
[0015]
In the above-described flexible diaper, a member that expands and contracts in the width direction is used as the side sheet 24. However, when a material that does not expand and contract is used, the widening operation of the laminate F shown in FIG. 12 can be omitted. .
[0016]
[Problems to be solved by the invention]
12 and 13, the leg-around elastic member 19 for forming the leg gathers 18 is formed on the continuous body of the outermost layer sheet 22 conveyed along the longitudinal direction. The waist gather is joined to both sides in the width direction of the outermost layer sheet 22 by a so-called longitudinal flow method, which is continuous along the substantially leg opening 13 of the diaper while being curved at a predetermined interval along the conveying direction. The elastic member 17 around the waist for forming 16 is rotated 90 degrees around an axis perpendicular to the conveying surface while maintaining the state before the laminate F is cut, and is switched to the transverse flow system to change the belt-like body 36. It is necessary to join at predetermined intervals. That is, in order to hold the laminated body F in the state before cutting, the continuous laminated body F which shows the conveyance table of the substantially same outline shape as the laminated body F previously on the upper side of FIG. _C The continuous laminate F is in contact with the back surface of the outermost sheet, that is, the continuous body forming the belt-like shape of the outermost layer sheet 22. _C And the continuous laminate F from the surface of the transfer table. _C By vacuuming the back surface of the stack, the cut laminate F is sucked and held by the transfer table, and the transfer table is turned 90 degrees in this state, and the transfer table is further pulled back and forth from the central portion thereof. It is conceivable to increase the interval.
[0017]
As described above, in order to manufacture the mold diaper that can be put in accordance with the above-described procedure, the workpiece transfer device in which the sheet-shaped workpiece is turned 90 degrees with respect to the conveyance surface to change the direction, and further this A workpiece transfer device capable of transferring a workpiece in a widened state is required, but conventionally there has not been a workpiece transfer device that meets such requirements.
[0018]
OBJECT OF THE INVENTION
An object of the present invention is to provide a workpiece transfer device in which a sheet-shaped workpiece is turned 90 degrees with respect to its conveying surface to change the direction, and in particular, a workpiece transfer device suitable for incorporation in a production line for a diaper to be put on. It is to provide.
[0019]
Another object of the present invention is to manufacture a workpiece delivery device, in particular, a mold diaper that turns a sheet-like workpiece by turning 90 degrees with respect to its conveying surface and changing the orientation of the workpiece in a widened state. An object of the present invention is to provide a suitable workpiece transfer device incorporated in a line.
[0020]
Furthermore, another object of the present invention is to provide a transporting carriage that can be reliably transported without play with respect to the guide rail, particularly a transporting carriage that is incorporated in a workpiece transfer device for a diaper to be worn. is there.
[0021]
[Means for Solving the Problems]
The first form according to the present invention is an endless conveyor having a carrying-in part and a carrying-out part of a sheet-like workpiece, and two connection conveying parts connecting the carrying-in part and the carrying-out part, and a conveyance attached to the endless conveyor. A carriage, a table base that is pivotably attached to the transport carriage, a work table that is integrally attached to the table base and that delivers the work, and holds the work on the work table by suction And a means for rotating the table base by 90 degrees about an axis perpendicular to the transfer surface of the workpiece with respect to the transfer carriage at one of the connection transfer portions from the carry-in portion to the carry-out portion. The workpiece delivery device is characterized by comprising.
[0022]
In addition, the second embodiment according to the present invention is an endless conveyor having a sheet-like workpiece carrying-in portion and a carrying-out portion, and two connecting and conveying portions connecting the carrying-in portion and the carrying-out portion, and is attached to the endless conveyor. A transporting carriage, a table base pivotably attached to the transporting carriage, and attached to the table base so as to be movable in directions opposite to each other along the width direction of the work. A pair of work tables to be performed, a suction means for sucking and holding the work on the pair of work tables, and the connection base between the carry-in portion and the carry-out portion, and the table base to the transport carriage On the other hand, a means for turning 90 degrees around an axis perpendicular to the conveyance surface of the workpiece, and the one connection conveyance portion from the carry-in portion to the carry-out portion The table is moved by means for moving the pair of work tables so that the pair of work tables are separated from each other and extending the work in the width direction, and the other connecting and conveying unit from the carry-out unit to the carry-in unit. The pair of work tables are mutually connected by means for turning the base 90 degrees around the axis perpendicular to the transfer surface of the workpiece with respect to the transfer carriage, and the other connection transfer portion from the carry-out portion to the carry-in portion. The workpiece transfer apparatus includes means for moving the pair of work tables so as to approach each other and returning the pair of work tables to the original width.
[0023]
Here, the turning motion of the table base relative to the transport carriage and the movement of the pair of work tables along the width direction of the workpiece relative to the table base may be performed simultaneously. The means for moving the pair of work tables along the width direction includes a pair of widening guide grooves formed in the transport carriage with a pivot axis of the table base with respect to the transport carriage as a rotational symmetry axis, and the pair of work tables. It is effective to have a pair of engaging pins that are respectively provided in a protruding manner and engage with the widening guide grooves. Further, the endless conveyor is preferably formed with at least two portions having a linear conveyance locus, and the workpiece loading portion and the unloading portion are respectively set to the portions having the linear conveyance locus, As means for swiveling the table base with respect to the transport carriage, formed in the transport direction of the transport carriage by the endless conveyor, and two connection transport sections between the carry-in section and the carry-out section It is possible to employ a guide groove that has a guide groove that is shifted to one side and the other side in the width direction of the endless conveyor, and an engagement pin that protrudes from the table base and engages with the guide groove.
[0024]
The guide rail further includes a guide rail provided along the endless conveyor and having a pair of guide surfaces parallel to each other and having a portion curved around an axis parallel to the guide surfaces. A carriage main body connected to the endless conveyor, and the carriage main body connected to the endless conveyor, parallel to the guide surface of the guide rail and along the guide rail. At least two front and rear turning bases mounted so as to be able to turn about a rotation axis perpendicular to the traveling direction of the transport carriage, and a pair of these turning bases sandwich the guide rail around an axis parallel to the rotation axis. In this way, it is possible to employ one having a guide roller that is rotatably attached and is in rolling contact with the pair of guide surfaces.
[0025]
On the other hand, the third form according to the present invention is: A carriage used in the workpiece delivery device according to the first or second aspect of the present invention, Moves in a direction perpendicular to the axis along a guide rail having a pair of guide surfaces parallel to each other and having a curved portion formed around an axis parallel to the guide surfaces. Possible In R The carriage can be turned around a carriage body and a rotation axis that is parallel to the guide surface of the guide rail and perpendicular to the traveling direction of the carriage along the guide rail with respect to the carriage body. At least two swivel bases attached to the front and rear, and a pair of these swivel bases, each of which is rotatably mounted so as to sandwich the guide rail around an axis parallel to the rotation axis, and is in rolling contact with the pair of guide surfaces. Characterized by comprising a guide roller With things is there.
[0026]
[Action]
According to the first aspect of the present invention, the sheet-shaped work is sucked and held by the sucking means at the carry-in portion with respect to the work table of the transport carriage attached to the endless conveyor. It is sent out from the carry-in section to the carry-out section via the connection conveyance section. Then, after the table base turns 90 degrees around the axis perpendicular to the work conveyance surface with respect to the conveyance carriage together with the work table at this intermediate connection conveyance unit, the adsorption by the adsorption means is released after reaching the carry-out unit, 90 The sheet-shaped workpiece whose direction has been changed is removed from the work table. Further, when the transport carriage returns from the carry-out section to the carry-out section via the other connection transport section, the table base and the work table along the axis perpendicular to the work carriage surface with respect to the transport carriage at the other connection transport section. Turn 90 degrees around and return to the original state.
[0027]
According to the second aspect of the present invention, the sheet-shaped work is sucked and held by the suction means at the carry-in portion with respect to the pair of work tables of the transport carriage attached to the endless conveyor, and with the turning of the endless conveyor. It is sent out from the carry-in part to the carry-out part via the connection conveyance part. Then, the table base turns 90 degrees around the axis perpendicular to the workpiece conveyance surface with respect to the conveyance carriage at this intermediate connection conveyance section, and the pair of work tables are further separated from each other. After moving in the width direction to widen the workpiece, the workpiece reaches the carry-out portion, the suction by the suction means is released, and the workpiece in the widened state whose direction is changed by 90 degrees is removed from the work table. Further, when the transport carriage returns from the carry-out section to the carry-out section via the other connection transport section, the table base is moved around the axis perpendicular to the work transport plane with respect to the transport carriage at the other connection transport section. Then, the pair of work tables are moved in the width direction of the work so that the pair of work tables come closer to each other, and the original state is restored.
[0028]
When the means for moving the pair of work tables along the width direction of the work has the widening guide groove and the engagement pin, when the table base turns 90 degrees with respect to the transport carriage, the pair of the transport tables formed on the transport carriage The relative positions of the engagement pins of the work table held on the table base with respect to the widening guide groove change, and the work tables move relative to the table base so as to approach or separate from each other.
[0029]
In addition, when a means having a guide groove and an engagement pin is used as a means for turning the table base with respect to the transport carriage, the engagement pin protruding from the table base is connected to the endless conveyor in the width direction. The table base turns 90 degrees in one direction around the axis perpendicular to the workpiece conveyance surface with respect to the conveyance carriage so that it follows the guide groove that shifts. Turn 90 degrees in the opposite direction.
[0030]
Furthermore, a guide rail along the endless conveyor is further provided, and as the transport carriage moving along the guide rail, a carriage body, at least two front and rear turning bases, and a pair of guide rollers attached to the turning bases respectively. When what has is adopted, a pair of guide rollers which pinch | interpose this guide rail roll along a guide surface as the conveyance trolley connected with the endless conveyor moves along a guide rail. In the curved guide rail, the distance between the pair of guide rollers attached to each turning base does not change, so the pair of guide rollers are turned in the direction perpendicular to the guide surface so as to turn with respect to the cart body. The base turns.
[0031]
According to the 3rd form of this invention, a pair of guide roller which pinches | interposes this guide rail rolls along a guide surface as a conveyance trolley moves along a guide rail. In the curved guide rail, the distance between the pair of guide rollers attached to each turning base does not change, so the pair of guide rollers are turned in the direction perpendicular to the guide surface so as to turn with respect to the cart body. The base turns.
[0032]
【Example】
An embodiment of the workpiece transfer apparatus according to the present invention that can realize the manufacturing method of the disposable diaper shown in FIGS. 12 and 13 will be described in detail with reference to FIGS.
[0033]
As shown in FIG. 1 showing the schematic structure of the present embodiment, in this embodiment, the carry-in unit I of the workpiece transfer device 100 is used. ₀₀ The individual laminates F that are continuous at the unloading section O of the carry-in conveyor 101 ₀₁ Connection transport part J _I The laminates F are rotated 90 degrees and widened at the same time, and the laminates F held in this state are unloaded. ₀₀ Are overlapped with a belt-like body 36 (see FIG. 13) having a ladder shape and carried out of the workpiece transfer device 100.
[0034]
Loading section I of the loading conveyor 101 ₀₁ Includes a continuous laminate F carried from the upstream side. _C Loading section I of the loading conveyor 101 ₀₁ The direction changing roller 102 is in contact with the conveyor belt 103. Further, a cutter blade (not shown) is provided on the outer periphery of the conveyor belt 104 above the conveyor driving pulley 104 for rotating the conveying belt 103 of the carrying-in conveyor 101 counterclockwise in FIG. The cutter drum 105 is disposed, intermittently descends toward the conveyor drive pulley 104, and rotates synchronously with the conveyor drive pulley 104. _C Is a cutting line C shown in FIG. ₁ Are cut into individual laminates F along the line. Continuous laminate F carried from the direction changing roller 102 _C In order to hold the continuous laminated body F via the conveyor belt 103. _C A suction device (not shown) for sucking and holding the individual laminates F after the cutting is a carry-in part I of the carry-in conveyor 101. ₀₁ Unloading part O ₀₁ The unloading section O of the carry-in conveyor 101 is incorporated. ₀₁ Loading part I of the workpiece transfer device 100 ₀₀ The unloading section O of the carry-in conveyor 101 so that the individual laminates F can be smoothly delivered to the ₀₁ The suction force is set to be weaker than the other parts.
[0035]
Similarly, carry-in part I ₀₆ Is the unloading part O of the workpiece transfer device 100 ₀₀ In order to hold the laminated body F carried in from the workpiece transfer device 100 in a state where it is superimposed on the belt-like body 36, the laminated body F is held on the carry-out conveyor 106 that conveys the belt-like body 36 that forms a ladder shape. A suction device (not shown) for sucking and holding the ₀₆ It is installed from the downstream side.
[0036]
As shown in FIG. 1 and FIG. 2 showing the front shape of the workpiece transfer device 100, the side frame 108 erected vertically on the work floor 107 has a support shaft 110 protruding horizontally through a reinforcing column 109. The base end of is fixed. A pair of face plates 113 that rotatably hold two sprocket shafts 111 and 112 parallel to the support shaft 110 are fixed to the support shaft 110 in parallel with the side frame 108. A pair of left and right bogie sprockets 114 are fitted to both ends of the two sprocket shafts 111 and 112 arranged symmetrically with the support shaft 110 in between, and the left and right bogie sprockets 114 are respectively endless. The toothed belt 115 for the cart is wound as the endless conveyor of the present invention. Also, on one end side of one sprocket shaft 111, a speed reduction sprocket 118 connected to a drive sprocket 116 connected to a drive source (not shown) via a drive toothed belt 117 is integrally fitted, whereby the left and right carriages The sprocket 114 for rotation rotates synchronously, and the toothed belt 115 for the carriage is turned clockwise in FIG.
[0037]
A holder arm 120 that holds the bracket holder 119 coaxially with one of the sprocket shafts 111 is attached to the distal end portion of the support shaft 110. _O The base end portions of the plurality of roller brackets 121 extending radially toward are fixed. A holding roller 122 is rotatably attached to the front end of each of the roller brackets 121, and an endless seal belt 123 having a tape shape is wound around the holding roller 122. Further, on the opposite side of the holding roller 122 across the support shaft 110, there is a loading portion I. ₀₀ From connection conveyance part J _I Unloading part O ₀₀ A suction box 124 having a rectangular cross section extending to is disposed, and a vacuum pump (not shown) that holds the inside of the suction box 124 in a negative pressure state is connected to the suction box 124. A groove-shaped opening 125 is formed on the outer peripheral side of the suction box 124, and the seal belt 123 is slidably wound around the suction box 124 so as to close the opening 125. Yes.
[0038]
That is, the seal belt 123 is wound around the holding roller 122 and the suction box 124, and is integrally connected to a transport carriage 127 (described later) via a suction duct 157 (described later). With this turning operation, it is rotated together with this.
[0039]
The unloading unit O of the workpiece transfer apparatus 100 ₀₀ Loading part I of the carry-out conveyor 106 ₀₆ The unloading part O of the workpiece transfer device 100 so that the stack F is smoothly transferred to the workpiece. ₀₀ The suction force in the suction box 124 is set to be weaker than other portions.
[0040]
The outer peripheral edge of the face plate 113 is integrally joined to the inner peripheral side of a guide rail 126 having a strip-like shape with a constant thickness. The guide rail 126 is connected to the carry-in part I. ₀₀ And unloading part O ₀₀ A flat plate-shaped portion corresponding to, and two connecting and conveying portions J connecting them _I , J _O And the center of curvature of these semi-cylindrical portions is set to coincide with the axis of the two sprocket shafts 111 and 112 described above. A plurality of transport carts 127 described below are turned along the guide rail 126.
[0041]
The structure of the transport carriage 127 is as shown in FIGS. That is, as shown in FIG. 3 showing the cross-sectional structure in a broken state and FIGS. 4 and 5 showing the side shape thereof, on the left and right sides of the connecting plate 128 facing the outer peripheral surface of the guide rail 126 with a gap, Side end surface S of the guide rail 126 _S A pair of left and right base holders 129 opposite to each other are fixed, and these base holders 129 can be swung via bearings 130 around a rotation axis perpendicular to the traveling direction of the transport carriage 127 along the guide rail 126. A pair of front and rear swivel bases 131 are respectively attached. Each of the swivel bases 131 has guide surfaces S formed on the inner peripheral side and the outer peripheral side of the side end portion of the guide rail 126 and parallel to each other. _GI , S _GO A pair of guide rollers 132 that are in rolling contact with each other are rotatably attached to each other, and the distance between the guide rollers 132 is determined by the guide surface S of the guide rail 126. _GI , S _GO An appropriate interval corresponding to the interval is set.
[0042]
Each of the transport carts 127 is connected to the aforementioned left and right toothed belts 115 for the carts via the coupling brackets 134, and the spacing between the transport carts 127. Is set equal to the length L of the laminate F shown in FIG. In other words, the length of the above-mentioned cart toothed belt 115 is set to an integral multiple of the length L of the laminated body F. In this embodiment, 12 transport carts 127 are assembled to the guide rail 126 at equal intervals. It has been.
[0043]
For this reason, as the bogie toothed belt 115 turns, the transport cart 127 is connected to the connection transport section J. _I , J _O When passing through a semi-cylindrical portion corresponding to the turning base 131, the turning base 131 rotates with respect to the base holder 129 as shown in FIG. ₀₀ And unloading part O ₀₀ Similarly to the case of passing through a flat plate portion corresponding to, the transport carriage 127 can be smoothly run along the guide rail 126.
[0044]
Note that one of the pair of guide rollers 132 is guided by a spring force to the guide surface S. _GI , S _GO Although a structure that urges one of the two is also conceivable, a very large centrifugal force acts when the heavy transport carriage 127 rotates at high speed, so that the spring that overcomes this centrifugal force and the weight of the transport carriage 127 can be considered. One guide roller 132 is guided to the guide surface S by a strong spring material having a force. _GI , S _GO When the biasing force is applied to one of them, the frictional resistance of the bearing portion of the guide roller 132 becomes very large, the running resistance increases, and a storage space for the spring material is required, so that the transport carriage 127 can be made compact. It becomes difficult.
[0045]
At the center of each of the swivel bases 131, side end surfaces S of the guide rails 126 are provided. _S A steel ball holder 136 for storing a steel ball 135 capable of rolling contact with the steel ball 135 is formed, and the left and right side end surfaces S of the guide rail 126 are connected to the steel ball 135 stored in the steel ball holder 136. _S To the guide rail 126, the horizontal movement of the transport carriage 127 with respect to the guide rail 126 is suppressed, and in combination with the previous guide roller 132, the transport carriage 127 with respect to the guide rail 126 does not rattle smoothly. Driving is possible.
[0046]
FIG. 6 shows a state in which the planar shape of the transport carriage 127 is broken, and FIG. 7 shows the appearance of a table guide plate and a pair of work tables constituting a part thereof.
[0047]
That is, an elliptical ring-shaped connection ring 137 is integrally fixed to the upper end of the connection plate 128. In this embodiment, the connection ring 137, the connection plate 128, the base holder 129, etc. A bogie body is formed. Further, a pivot shaft 138 passing through the connecting plate 128 is rotatably attached to the central portion of the connecting plate 128 via a bearing 139 so as to be perpendicular to the outer peripheral surface of the guide rail 126. . Further, a central portion of a rectangular table guide plate 141 is integrally fitted to the upper end of the swivel shaft 138 via a detent key 140. In this embodiment, the swivel shaft 138 and the table guide are provided. The table 141 of the present invention is constituted by the plate 141 and the like.
[0048]
At the lower end of the pivot shaft 138, there is a base end portion of an offset arm 144 in which an engagement pin 143 that is slidably fitted in a pivot guide groove 142 formed on the outer peripheral surface of the guide rail 126 is screwed to the distal end portion. It is fixed integrally. The turning guide groove 142 is provided with a loading portion I. ₀₀ And unloading part O ₀₀ , The guide rail 126 is offset by a predetermined amount from the center in the width direction to the left and right, and these offset amounts cause the table guide plate 141 to turn 90 degrees around the bearing 139 with respect to the connecting plate 128. Is set to the required amount.
[0049]
On the table guide plate 141, a pair of work tables 145 for adsorbing and holding the stacked body F are placed. At both ends in the longitudinal direction of the work table 145, at both ends of the table guide plate 141. Engagement blocks 146 that are slidably engaged so as to embrace this are fixed, so that the work table 145 can slide in the left-right direction in FIG. 6 relative to the table guide plate 141. It has become. Engaging pins 148 that are slidably engaged with elliptical widening guide grooves 147 that are formed on the surface of the connection ring 137 so as to protrude from the back side are fixed to the pair of work tables 145. The engagement pin 148 passes through a pair of left and right escape grooves 149 formed in the table guide plate 141 along the width direction of the table guide plate 141.
[0050]
Accordingly, as the table guide plate 141 and the work table 145 rotate with respect to the connection ring 137, the engagement pin 148 moves along the widening guide groove 147. As a result, the interval between the work tables 145 is as shown in FIG. The table can be slid relative to the table guide plate 141 so as to be separated from each other. In the present embodiment, the pair of widening guide grooves 147 communicate with each other in an elliptical shape, but may be formed in an arc shape with a 180 degree separation from each other.
[0051]
A suction chamber 150 is formed along the longitudinal direction of these work tables 145, and each of the suction chambers 150 is closed by a cover plate 151. In addition, a plurality of suction holes 152 communicating with the suction chamber 150 are formed in the cover plate 151, and fine grainy uneven portions 153 for increasing the frictional force against the laminate F are formed on the surface thereof. ing. A long hole 154 communicating with one end side in the longitudinal direction of the suction chamber 150 is formed on the back surface side of the work table 145 along the moving direction, and a felt for sealing the table guide plate 141 or the like on the inner peripheral portion thereof. The seal ring 155 formed in (1) is attached. Furthermore, one end of a flexible suction duct 157 is connected to a pair of suction ports 156 formed in the table guide plate 141 so as to be always in communication with the elongated hole 154. The other end of the suction duct 157 is integrally coupled to the above-described seal belt 123, and can communicate with the opening 125 of the suction box 124 as the seal belt 123 pivots in conjunction with the transport carriage 127. Yes. That is, the other end portion of the suction duct 157 is connected to the seal belt 123 at an interval equal to the arrangement interval of the transport carriages 127.
[0052]
Therefore, when the suction duct 157 communicates with the opening 125 of the suction box 124 via the seal belt 123, the suction duct 157 and the suction chamber 150 of the work table 145 are independent of the position of the work table 145. , And are always in communication with each other through the suction port 156 and the long hole 154, and both end portions in the width direction of the stacked body F placed on the cover plate 151 of the work table 145 are held in close contact by the suction holes 152. Will be. In this case, the concavo-convex portion 153 described above is effective in holding the stacked body F so that the stacked body F does not shift with respect to the cover plate 151 when the stacked body F is widened in a sucked state.
[0053]
Carry-in part I of work delivery device 100 ₀₀ From connection conveyance part J _I Unloading part O ₀₀ FIG. 8 shows the movement trajectory of the transport carriage 127 in this embodiment along the turning guide groove 142 leading to. That is, the individual stacked bodies F separated from each other are brought into the carry-in unit I of the workpiece transfer device 100. ₀₀ The unloading section O of the loading conveyor 101 ₀₁ Is brought into the work table 145 in the closest state, but the cutting line C is cut by the cutter blade of the cutter drum 105. ₁ Continuous laminate F cut along _C The continuous laminated body F by the carry-in conveyor 101 so that the cut portion coincides with the boundary portion of the adjacent conveyance carriage 127. _C And the conveyance timing of each laminated body F and the traveling timing of each conveyance cart 127 of the workpiece transfer apparatus 100 are adjusted in advance.
[0054]
And the transporting carriage 127 is connected on the way. _I 1, the orientation of the work table 145 changes as shown in FIG. _I Since the offset amount of the turning guide groove 142 gradually changes as the transport carriage 127 travels, the turning shaft 138 that holds the engaging pin 143 that engages with the turning guide groove 142 is connected together with the table guide plate 141 and the like. The board 128 and the connection ring 137 etc. start to turn counterclockwise in the figure, and along with this, the engagement pin 148 of the work table 145 moves counterclockwise in the figure along the widening guide groove 147 of the connection ring 137. As a result of the movement, the interval between the pair of work tables 145 is widened, and the stacked body F is widened.
[0055]
Thus, in the above-described embodiment, the continuous laminated body F is formed by the cutter drum 105. _C Are cut into individual laminated bodies F in advance and carried into the workpiece transfer apparatus 100. The continuous laminated body F is cut by the cutter blade of the cutter drum 105. _C Cutting line C ₁ A perforated line is cut along the _C In this state, the workpiece is transferred to the workpiece transfer device 100, and the transport cart 127 is connected on the way. _I , The orientation of the work table 145 changes as shown in FIG. _C Can be cut at the perforation. In this case, the continuous laminate F is added to the workpiece transfer device 100. _C Is carried in with a stable shape, and the continuous laminated body F is conveyed via the conveyor belt 103. _C Therefore, it is not necessary to strongly set the suction force by a suction device (not shown) that holds and holds the suction, and this suction device can be made compact.
[0056]
In FIG. 8, a part of the adjacent transport cart 127 interferes with the turning motion of the transport cart 127, but as is apparent from FIG. _I Then, since each conveyance cart 127 is not on the same plane, such mutual interference does not actually occur.
[0057]
In this way, each laminated body F is turned 90 degrees and widened, and the laminated body F held in this state is transferred to the unloading portion O of the workpiece delivery device 100. ₀₀ That is, the carry-in part I of the carry-out conveyor 106 ₀₆ Is superposed on a belt-like body 36 (see FIG. 13) having a ladder shape, and is transferred to the carry-out conveyor 106 side with the end of the suction operation on the conveyance carriage 127 side. And the transporting carriage 127 is connected on the way. _O , The operation completely opposite to that described above, that is, the operation of shifting from the lower side to the upper side in FIG. ₀₀ Come back to.
[0058]
In the above-described embodiment, the case where the laminated body F is widened has been described. However, in the case of the laminated body F which does not need to be widened, the table guide plate 141 and the work table 145 are integrally fixed to widen the guide. The groove 147 and the engagement pin 148 can be omitted.
[0059]
【The invention's effect】
According to the workpiece delivery device of the present invention, in a production line for a sheet-shaped workpiece, particularly a mold diaper to be put on, a continuously supplied laminate is turned 90 degrees with respect to its transport surface to change the direction, Since this laminated body can be reliably delivered in a widened state, the manufacturing method of the mold diaper shown in FIGS. 12 and 13 can be realized.
[0060]
In addition, the pair of work tables are moved in the width direction of the workpiece in conjunction with the turning operation of the table base. The turning operation of the table base with respect to the transport carriage and the movement of the pair of work tables along the width direction of the workpiece with respect to the table base are performed. When performing at the same time, for example, guide grooves that shift to one side and the other side in the width direction of the endless conveyor are formed along the conveyance direction of the conveyance carriage at the two connection conveyance units between the workpiece carry-in unit and the carry-out unit, respectively. In addition, an engaging pin that engages with the guide groove protrudes from the table base, and a pair of widened guide grooves 147 are formed on the transport carriage, and the engaging pins that respectively engage with the widened guide grooves 147 are formed on the work table. When projecting from each other, the pair of work tables are moved in the width direction of the work in conjunction with the turning motion of the table base relative to the transport carriage. Since it is Rukoto, it is possible to compact the entire apparatus by shortening the travel section required for these operations.
[0061]
In addition, when the workpiece loading and unloading portions are set to a portion having a linear conveyance locus, it is possible to deliver the workpiece while holding the workpiece in a flat shape, ensuring the reliability of workpiece delivery. The device design becomes easy.
[0062]
On the other hand, a transport carriage that has a pair of guide surfaces parallel to each other and that can move in a direction perpendicular to the axis along a guide rail in which a portion curved around an axis parallel to these guide surfaces is formed. At least two front and rear turning bases attached to the main body of the carriage so as to be turnable around a rotation axis parallel to the guide surface of the guide rail and perpendicular to the traveling direction of the transport carriage along the guide rail, and If the swivel base is provided with a pair of guide rollers that are rotatably mounted so as to sandwich the guide rails around an axis parallel to the rotation axis, respectively, and that are in rolling contact with the pair of guide surfaces, the transport cart can run smoothly. In addition to being possible, this can be made lighter and compact.
[0063]
In addition, when the conveyance trolley mentioned above is integrated in the workpiece delivery apparatus, the whole apparatus can be reduced in size.
[Brief description of the drawings]
FIG. 1 is a side view showing a schematic structure of an embodiment of a workpiece transfer apparatus according to the present invention that can realize the manufacturing method of a disposable diaper shown in FIGS.
FIG. 2 is a front view showing a schematic structure of the embodiment shown in FIG. 1;
FIG. 3 is a cutaway sectional view corresponding to FIG. 2 of a transport carriage in the present embodiment.
4 is a side view showing a structure in which the transport carriage shown in FIG. 3 is broken along a table movement guide groove, and shows a state where the carriage is running along a linear guide rail. FIG.
FIG. 5 is a side view of a main part of the transport carriage corresponding to FIG. 4 showing a state where the vehicle travels along a curved guide rail.
6 is a plan view in which a part of the transport carriage shown in FIG. 3 is cut away. FIG.
FIG. 7 is a perspective view showing the appearance of a table guide plate and a pair of work tables that constitute a part of the transport carriage.
FIG. 8 is a conceptual diagram showing a movement trajectory of the transport carriage in the embodiment shown in FIG.
FIG. 9 is a perspective view showing the appearance of a diaper to be worn that is a subject of the present invention.
10 is a perspective view showing an appearance of a state in which the closing portion of the mold diaper shown in FIG. 1 is peeled off and unfolded. FIG.
11 is a cross-sectional view schematically showing a structure in a state where the flat diaper shown in FIG. 10 is flatly developed.
FIG. 12 is a work process diagram showing an example of a manufacturing method of a mold diaper to be put together with FIGS. 13 to 15, in which a continuous laminated body is cut into individual laminated bodies and turned 90 degrees and widened. Show.
FIG. 13 is a work process diagram showing an example of a method for manufacturing a mold diaper to be used together with FIGS. 12, 14, and 15 and shows a state in which a widened laminate is joined to a belt-like body.
FIG. 14 is a work process diagram illustrating an example of a method for manufacturing a mold diaper to be worn together with FIGS. 12, 13 and 15 and shows a state in which an elastic member around the waist is joined to a belt-like body.
FIG. 15 is a work process diagram showing an example of a manufacturing method of a mold diaper that can be put together with FIGS. 12 to 14, in which a portion that becomes an opening around a leg is pulled out and the band is folded in half; The state which cut | disconnected to the type diaper to be worn and a waste part is shown.
[Explanation of symbols]
36 Band
100 Work delivery device
101 Carry-in conveyor
102 Directional change roller
103 Conveyor belt
104 Conveyor drive pulley
105 Cutter drum
106 Unloading conveyor
107 Work floor
108 side frame
109 Reinforcement column
110 Spindle
111, 112 sprocket shaft
113 face plate
114 Bogie Sprocket
115 Toothed belt for trolley (endless conveyor)
116 Drive sprocket
117 Belt with drive teeth
118 Deceleration sprocket
119 Bracket holder
120 Holder arm
121 Roller bracket
122 Holding roller
123 Seal belt
124 Suction box
125 opening
126 Guide rail
127 transport cart
128 dolly body
129 Base holder
130 Bearing
131 swivel base
132 Guide roller
133 Connecting pin
134 Connecting bracket
135 steel balls
136 Steel ball holder
137 connecting ring
138 Rotating axis
139 Bearing
140 Non-rotating key
141 Table guide plate
142 Turning guide groove
143 engaging pin
144 Offset arm
145 Worktable
146 Engagement block
147 Widening guide groove
148 engaging pin
149 escape groove
150 Suction chamber
151 lid plate
152 Suction hole
153 Concavity and convexity
154 slotted hole
155 seal ring
156 Suction port
157 Suction duct
I ₀₀ Carry-in part of workpiece transfer device
O ₀₀ Unloading part of workpiece transfer device
J _I , J _O Connection transfer section of workpiece transfer device
I ₀₁ Carry-in section of the carry-in conveyor
O ₀₁ Carry-out section of carry-in conveyor
I ₀₆ Unloading conveyor loading section
F _C Continuous laminate
F Laminate
S _S Side end face
S _GI , S _GO Guide plane
C ₁ Cutting line

Claims (8)

An endless conveyor having a sheet carrying-in part and a carrying-out part, and two connection conveying parts connecting the carrying-in part and the carrying-out part;
A transport carriage attached to this endless conveyor;
A table base pivotably attached to the carriage,
A work table that is integrally attached to the table base and delivers the work; and
A suction means for sucking and holding the work on the work table;
Means for rotating the table base 90 degrees around an axis perpendicular to the transfer surface of the workpiece with respect to the transfer carriage at one of the connection transfer portions from the carry-in portion to the carry-out portion. Work transfer device. An endless conveyor having a sheet carrying-in part and a carrying-out part, and two connection conveying parts connecting the carrying-in part and the carrying-out part;
A transport carriage attached to this endless conveyor;
A table base pivotably attached to the carriage,
A pair of work tables that are attached to the table base so as to be movable in opposite directions along the width direction of the work, and for delivering the work, and
A suction means for sucking and holding the work on the pair of work tables;
Means for turning the table base 90 degrees around an axis perpendicular to the transfer surface of the workpiece with respect to the transfer carriage at the one connection transfer unit from the carry-in unit to the carry-out unit;
Means for moving the pair of work tables so that the pair of work tables are separated from each other in the one connection transport unit from the carry-in unit to the carry-out unit, and extending the work in the width direction;
Means for turning the table base 90 degrees around an axis perpendicular to the transfer surface of the workpiece with respect to the transfer carriage at the other connecting transfer unit from the carry-out unit to the carry-in unit;
Means for moving the pair of work tables so that the pair of work tables approach each other at the other connecting and conveying unit from the carry-out unit to the carry-in unit, and returning the pair of work tables to their original widths; A workpiece delivery device characterized by comprising: The workpiece transfer apparatus according to claim 2, wherein the turning operation of the table base with respect to the transport carriage and the movement of the pair of work tables along the width direction of the workpiece with respect to the table base are simultaneously performed. . The means for moving the pair of work tables along the width direction of the work includes a pair of widening guide grooves formed in the transport carriage with a pivot axis of the table base with respect to the transport carriage as a rotational symmetry axis, and the pair 4. The work delivery device according to claim 2, further comprising a pair of engagement pins that are respectively provided so as to project from the work table and engage with the widening guide grooves. 5. The endless conveyor is formed with at least two portions having a linear conveyance locus, and the work loading and unloading portions are respectively set to the portions having the linear conveyance locus. The workpiece transfer apparatus according to any one of claims 1 to 4. Means for turning the table base with respect to the transfer carriage is formed along the transfer direction of the transfer carriage by the endless conveyor, and two connecting transfer sections between the carry-in section and the carry-out section are provided. A guide groove that is shifted to one side and the other side in the width direction of the endless conveyor, and an engagement pin that protrudes from the table base and engages with the guide groove. The workpiece transfer apparatus according to any one of claims 1 to 5. The guide rail further includes a guide rail provided along the endless conveyor and having a pair of guide surfaces parallel to each other and having a portion curved around an axis parallel to the guide surfaces. The transport carriage moving in a direction orthogonal to the axis is
A cart body connected to the endless conveyor;
At least two front and rear turning bases attached to the main body of the carriage so as to be able to turn around a rotation axis parallel to the guide surface of the guide rail and perpendicular to the traveling direction of the transport carriage along the guide rail. When,
Each of the swivel bases includes a pair of guide rollers that are rotatably attached so as to sandwich the guide rail around an axis parallel to the rotation axis, and that are in rolling contact with the pair of guide surfaces, respectively. The workpiece transfer apparatus according to any one of claims 1 to 6. 8. A transport carriage used in the workpiece delivery device according to claim 1, wherein the carriage has a pair of guide surfaces parallel to each other and curves around an axis parallel to the guide surfaces. Ri movable der in a direction perpendicular to the axis along the guide rail but which are formed, the transport carriage,
The cart body,
At least two front and rear turning bases attached to the main body of the carriage so as to be able to turn around a rotation axis parallel to the guide surface of the guide rail and perpendicular to the traveling direction of the transport carriage along the guide rail. When,
Each of the swivel bases is provided with a pair of guide rollers that are rotatably attached so as to sandwich the guide rail around an axis parallel to the rotation axis, and are in rolling contact with the pair of guide surfaces, respectively. Trolley.

Images