Splicing device and method

Abstract

The splicing device of the present invention makes the starting end (S) of the fabric (11R) on standby overlap with the ending end (E) of the previous fabric (11L) to connect the fabrics to each other, and includes: a first pad (31L) downstream of a first tool (21L), extending parallel to and obliquely along the first tool (21L), and holding the ending end (E) of the first fabric (11L); a second pad (31R) downstream of the second tool (21R), extending parallel to and obliquely along the second tool (21R), holding the starting end (S) of the second fabric (11R), sandwiching the two fabrics between the first pad (31L) and joining them; and a displacement device (60) configured to displace the position of a discharge roller (6) in a manner that makes a first route (1L) of the first fabric (11L) and a second route (1R) of the second fabric (11R) parallel to each other.

Description

Technical Field

[0001] The invention relates to a device and method for splicing (raw material roll) fabric. Background Art

[0002] In order to continuously supply the raw material roll fabric to the processing line, splicing is performed by overlapping and joining the leading end of a new raw material roll and the trailing end of an old raw material roll fabric (Patent Document 1).

[0003] On the other hand, in order to make non-stretchable fabric show stretchability, fabric is sometimes stretched by clamping it in a pair of gear-shaped stretching machines (patent document 2). In this case, if the overlapping joint of two fabrics is stretched parallel to the width direction of the fabric, the boundary line of the joint is sometimes broken.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: JP2005-298162A (Abstract)

[0007] Patent Document 2: JP2019-26942A( Figure 2 , Figure 3 ) Summary of the invention

[0008] In order to prevent the breakage of the joint, when connecting two material rolls, the material roll fabric ends are sometimes cut obliquely with respect to the width direction of the material rolls, and the obliquely cut ends are connected with tape or the like.

[0009] Conventionally, for example, in the invention of Patent Document 1, the new and old raw material rolls are conveyed from respective supply rollers to a common discharge roller, and thus are inclined relative to each other. When the inclined raw material roll is sucked / clamped from the width direction by a pad, the pad is not in parallel contact with the fabric, and thus wrinkles are generated on the fabric.

[0010] Therefore, an object of the present invention is to provide a splicing device and method which are not prone to produce wrinkles on fabrics during splicing.

[0011] The splicing device of the present invention makes the starting end S of the waiting fabric 11R overlap with the ending end E of the preceding fabric 11L to connect the fabrics to each other, including:

[0012] A first route 1L in which the first web 11L is transported from the first supply roller 5L along the discharge roller 6;

[0013] A second route 1R in which the second fabric 11R is transported from the second supply roller 5R along the discharge roller 6;

[0014] a first cutter 21L extending obliquely across the width direction of the first web 11L on the first route 1L;

[0015] a second cutter 21R extending obliquely across the width direction of the second fabric 11R on the second route 1R;

[0016] a first pad 31L extending obliquely along the first cutter 21L downstream of the first cutter 21L and holding the end portion E of the first fabric 11L;

[0017] A second pad 31R, downstream of the second cutter 21R, extends obliquely along the second cutter 21R, holds the starting end S of the second fabric 11R, and sandwiches and joins the two fabrics between the first pad 31L;

[0018] The displacement device 60 is configured to be able to displace the position of the discharge roller 6 so that the first path 1L and the second path 1R become parallel to each other.

[0019] On the other hand, the splicing method of the present invention makes the starting end S of the waiting fabric 11R overlap the end E of the preceding fabric 11L to connect the fabrics to each other, including:

[0020] In a first conveying step, the first web 11L is conveyed along a first route 1L from a first supply roller 5L to a discharge roller 6;

[0021] A second conveying step is to convey the second fabric 11R along a second route 1R from the second supply roller 5R to the discharge roller 6;

[0022] A first cutting step of cutting the first fabric 11L on the first route 1L in a manner obliquely across the width direction of the first fabric 11L;

[0023] A second cutting step of cutting the second fabric 11R on the second route 1R in a manner obliquely across the width direction of the second fabric 11R;

[0024] A starting end holding step of holding the starting end S of the second fabric 11R on the second pad 31R;

[0025] A first overlapping step, after the first conveying step, sandwiching the end portion E of the first fabric 11L and the beginning portion S of the second fabric 11R between the first pad 31L and the second pad 31R so that the end portion E and the beginning portion S overlap;

[0026] A first joining step of joining the start end portion S and the end end portion E to join the second fabric 11R to the first fabric 11L;

[0027] The first displacement step is to displace the discharge roller 6 from the first roller position P1 to the second roller position P2 after the first overlapping step and the first connecting step so as to change the route of the web to the second route 1R parallel to the first route 1L.

[0028] According to the present invention, the position of the discharge roller is displaced so that the first route and the second route are parallel to each other. Therefore, when the first fabric and the second fabric are held by the pads and cut, the surface (adsorption surface) of each pad faces (opposes from the front) in a state of being parallel to the fabrics, and when the fabrics are adsorbed by the pads, wrinkles are not generated on the fabrics.

[0029] In addition, in the present invention, a route refers to a path through which the fabric passes. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a front view of a splicing device according to one embodiment of the present invention, showing a state in which a first fabric is supplied to a processing line.

[0031] Figure 2 It is a side view showing the left side unit of the device.

[0032] Figure 3 It is a front view of the splicing device shown in a state where the left and right units are closed.

[0033] Figure 4 This is a front view of the device showing a state where a pair of fabrics are sandwiched by a pair of pads.

[0034] Figure 5 This is a front view of the device showing a state where the discharge roller moves from the first roller position to the second roller position after the first web is cut.

[0035] Figure 6 This is a front view of the device in a state where a second fabric is supplied to a processing line.

[0036] Figure 7 A. Figure 7 B and Figure 7 C is a front view showing a part of the left and right units in a closed state in cross section.

[0037] Figure 8 A is a schematic front view showing a stretching processing device, Figure 8 B is an enlarged cross-sectional view of the stretching apparatus showing the stretching method.

[0038] Fig. 9 A is a three-dimensional diagram showing the first and second fabrics before splicing. Fig. 9 B is a plan view showing the first and second fabrics after being spliced.

[0039] FIG. 10 is a front view showing an example of a conventional splicing device.

[0040] Fig.11 A and Fig.11 B is an enlarged front view showing an example of a conventional splicing method. DETAILED DESCRIPTION

[0041] Before describing the embodiments of the present invention, referring to FIG. Fig.11 A and Fig.11 B An example of a known splicing device will be described.

[0042] As shown in FIG10 , the splicing device 10 includes: a first winding portion 12L in which a first fabric 11L is wound into a roll; a second winding portion 12R in which a second fabric 11R is wound into a roll as a reserve for the first fabric 11L; a bracket portion 13 supporting the first and second winding portions 12L and 12R; remaining amount detection portions 14L and 14R installed near the first and second winding portions 12L and 12R; and a first and second fabric 11L and 11R being pulled from the first and second winding portions 12L and 12R. The invention relates to a plurality of guide rollers for guiding the first and second fabrics 11L and 11R to a plurality of guide rollers for guiding the first and second fabrics 11L and 11R to move at a specified speed; a cutting section 20 which is arranged downstream of the driving rollers 15L and 15R and cuts off the first and second fabrics 11L and 11R; a splicing section 30 which joins the first and second fabrics 11L and 11R; a tension control section 40 which is arranged on the downstream side of the splicing section 30 and controls the tension of the moving fabric; a storage section 50 which is arranged at the far downstream and stores the fabric in use; and

[0043] The first and second fabrics 11L and 11R are, for example, flexible fabrics such as nonwoven fabrics. The first fabric 11L is wound around the first winding portion 12L, and the second fabric 11R is wound around the second winding portion 12R. Adhesive tapes for joining with the spare fabric are attached to the ends of the first and second fabrics 11L and 11R. The fabrics used here are, for example, nonwoven fabrics used in the top sheet, back sheet, pleated sheet, etc. of a disposable diaper.

[0044] The first and second winding parts 12L and 12R have a rotation axis and are provided with roll-shaped first and second webs 11L and 11R wound around a winding core. The first and second winding parts 12L and 12R are provided on the bracket part 13 to be separated from each other so that the first and second webs 11L and 11R do not contact each other.

[0045] The remaining amount detection sections 14L and 14R detect the remaining amounts of the first and second webs 11L and 11R wound around the first and second winding sections 12L and 12R, and output detection signals for switching the winding section to be used in a predetermined state.

[0046] The first and second driving rollers 15L and 15R are driven to rotate by a driving motor (not shown) or the like. The clamping rollers 16L and 16R are arranged close to each driving roller 15L and 15R. Each driving roller 15L and 15R clamps the first and second fabrics 11L and 11R with the clamping rollers 16L and 16R and conveys them. Each driving roller 15L and 15R detects the travel speed of the first and second fabrics 11L and 11R respectively through a driving control mechanism (not shown), and controls the air brakes of the first and second winding parts 12L and 12R to a predetermined speed. The first driving roller 15L is arranged on the upstream side of the first supply roller 5L. The second driving roller 15R is arranged on the upstream side of the second supply roller 5R.

[0047] The cutting unit 20 includes a first cutter 21L and a second cutter 21R on the downstream side of the first and second supply rollers 5L and 5R. The first cutter 21L is provided at a position close to the route (first route) of the first web 11L, and the second cutter 21R is provided at a position close to the route (second route) of the second web 11R. The first and second cutters 21L and 21R have widths larger than the widths of the first and second webs 11L and 11R, respectively, so as to be able to cut the first and second webs 11L and 11R. The first cutter 21L is connected to a cylinder mechanism, which is not shown in the figure but serves as a driving mechanism, and moves in a direction close to the first web 11L when cutting the first web 11L. In addition, the second cutter 21R is connected to a cylinder mechanism, which is not shown in the figure but serves as a driving mechanism, and moves in a direction close to the second web 11R when cutting the second web 11R.

[0048] The splicing section 30 is provided on the downstream side near the cutting section 20, and includes a first pad 31L, a second pad 31R, a first drive mechanism 32L, and a second drive mechanism 32R. The first pad 31L is provided at a position along the route of the first fabric 11L, and the second pad 31R is provided at a position along the route of the second fabric 11R. The first drive mechanism 32L moves the first pad 31L, and the second drive mechanism 32R moves the second pad 31R. The first and second pads 31L and 31R include a suction device for sucking and holding the first and second fabrics 11L and 11R. In addition, the first and second drive mechanisms 32L and 32R are composed of a cylinder mechanism or the like, and move the first and second pads 31L and 31R in a direction approaching each other. When joining the first and second fabrics 11L and 11R, the first and second pads 31L and 31R suck and hold the respective fabrics 11L and 11R, and move in a direction approaching each other, so that the fabrics are pressed together, and the two are joined via an adhesive tape provided at the end of the prepared fabric.

[0049] The tension control unit 40 is disposed on the downstream side of the splicing unit 30 via a guide roller, and includes a tension roller 41 for controlling the tension of the traveling fabric and a rotating arm 42 having the tension roller 41 mounted at one end thereof. The tension control unit 40 keeps the tension of the traveling first and second fabrics 11L and 11R constant by swinging.

[0050] The storage section 50 is provided on the downstream side of the tension control section 40. The storage section 50 includes: a plurality of fixed rollers 51, a plurality of movable rollers 52 approaching or separating from the fixed rollers 51, and a driving mechanism 53 for moving the movable rollers 52. The fixed rollers 51 are arranged roughly in a row. The movable rollers 52 are arranged to be separated from the fixed rollers 51. The movable rollers 52 are swung in a direction approaching or separating from the fixed rollers 51 by the driving mechanism 53 composed of a cylinder mechanism. In the storage section 50, the fabric in use is alternately wound on the fixed rollers 51 and the movable rollers 52.

[0051] When the fabric is supplied from one of the first winding section 12L and the second winding section 12R, the storage section 50 moves the movable roller 52 in a direction away from the fixed roller 51, thereby storing the first fabric 11L or the second fabric 11R that is traveling. On the other hand, when the cutting section 20 cuts off any one of the first fabric 11L and the second fabric 11R for splicing, that is, when the fabric is not supplied to the production line on the downstream side, the movable roller 52 moves in a direction close to the fixed roller 51, and the fabric is supplied to the production line on the downstream side by a driving mechanism not shown.

[0052] A method of splicing the first and second webs 11L and 11R using the splicing device 10 having the above structure and capable of continuously supplying the first and second webs 11L and 11R will be described. In addition, for the sake of convenience, the first web 11L is used and the second web 11R as a spare web is joined to the first web 11L.

[0053] In normal operation, while the tension or travel speed of the first fabric 11L is controlled by the driving roller 15L and the tension control unit 40, the first fabric 11L is supplied to the manufacturing (processing) production line on the downstream side of the storage unit 50 along the route. At this time, the first and second cutters 21L, 21R and the first pad 31L of the cutting unit 20 are separated from the first and second fabrics 11L, 11R of the route. In addition, in a state where the movable roller 52 and the fixed roller 51 are separated to the maximum extent, the storage unit 50 is in a state of storing the first fabric 11L in use. Moreover, the beginning end of the second fabric 11R is sucked and held by the second pad 31R.

[0054] Next, when the remaining amount detecting unit 14L detects that the remaining amount of the first web 11L is less than a predetermined amount, the first winding unit 12L and the left driving roller 15L stop the movement of the first web 11L. When the supply of the first web 11L from the first winding unit 12L is stopped, the storage unit 50 moves the movable roller 52 in a direction approaching the fixed roller 51, unwinds the wound web, and continues to supply the web to the downstream side.

[0055] On the other hand, the first pad 31L of the splicing portion 30 absorbs and holds the first fabric 11L that has stopped traveling. Fig.11 As shown in A, the first blade 21L of the cutting unit 20 moves toward the first fabric 11L held by the first pad 31L, and cuts the first fabric 11L. Fig.11 As shown in B, the first mat 31L holding the cut first fabric 11L and the second mat 31R holding the second fabric 11R move toward each other, and the leading end of the prepared second fabric 11R is joined to the first fabric 11L via the adhesive tape.

[0056] Then, when the splicing of the second web 11R is completed, the driving roller 15R on the right side of Fig. 10 starts conveying the second web 11R. In addition, the storage unit 50 moves the movable roller 52 in a direction away from the fixed roller 51 and starts storing the second web 11R.

[0057] As can be seen from Fig. 10, in the conventional splicing device and method, the first fabric 11L before being sucked by the first pad 31L is in a non-parallel state with respect to the sucking surface of the first pad 31L. Therefore, when the first fabric 11L is sucked by the first pad 31L, wrinkles are easily generated in the first fabric 11L.

[0058] Hereinafter, one embodiment of the present invention will be described with reference to the drawings. Figures 1 to 9 A represents this embodiment.

[0059] like Figure 1 , Figure 3 to Figure 7 As shown in FIG. 1B , the present splicing device 10 is to make the starting end S ( Figure 7 B) overlapped to the end E of the preceding fabric 11L ( Figure 7 B) A splicing device for connecting fabrics to each other. The splicing device 10 includes: a pair of left and right first and second units U1, U2 and a central first and second receiving portion 22L, 22R.

[0060] like Figure 3 As shown, a pair of first and second units U1 and U2 have mutually symmetrical (mirror-symmetrical) structures, and devices such as actuators driving each unit are also arranged in left-right symmetry.

[0061] like Figure 1 as well as Figure 6 As shown, the first and second units U1 and U2 are alternately erected to carry the first and second fabrics, respectively. On the other hand, the second and first units U2 and U1 are alternately tilted and opened to place the leading ends of the second and first fabrics.

[0062] exist Figure 6 In the process, the first supply roller 5L and the first cover 23L ( Figure 7 A), the first cutter 21L, the first pad 31L and the first rotating frame 2L constitute the first unit U1. Figure 1 In the process, the second supply roller 5R and the second cover 23R ( Figure 7 A), the second cutter 21R, the second pad 31R and the second rotating frame 2R constitute a second unit U2.

[0063] The structure can be set to the following two states, namely: Figure 1 One of the first or second covers 23L, 23R and one of the first or second receiving portions 22L, 22R are facing each other, and one of the first or second units U1, U2 is in a closed state. Figure 6 The other of the first or second covers 23L, 23R and the other of the first or second receiving portions 22L, 22R are separated and the other of the first or second units U1, U2 is in an open state.

[0064] In addition, if Figure 3 to Figure 5 as well as Figure 7 As shown in A, the first and second covers 23L and 23R are arranged to face the first and second receiving portions 22L and 22R, respectively.

[0065] exist Figure 1 , the fixed frame 1 supports the first receiving portion 22L and the second receiving portion 22R in a fixed state. The first rotating frame 2L supports the first supply roller 5L, the first cover 23L, the first cutter 21L and the first pad 31L. The second rotating frame 2R supports the second supply roller 5R, the second cover 23R, the second cutter 21R and the second pad 31R.

[0066] like Figure 6 As shown, the first actuator 4L rotates the first rotating frame 2L around the first hinge 3L so that the first supply roller 5L and the second supply roller 5R are separated and the first rotating frame 2L is opened.

[0067] On the other hand, Figure 1 As shown, the second actuator 4R rotates the second rotating frame 2R around the second hinge 3R so that the second supply roller 5R and the first supply roller 5L are separated and the second rotating frame 2R is opened.

[0068] The splicing device 10 comprises: a first fabric 11L from Figure 1 The first supply roller 5L is conveyed along the first route 1L of the discharge roller 6, and the second web 11R is conveyed from the first supply roller 5L to the discharge roller 6. Figure 6 The second supply roller 5R is conveyed along the second route 1R of the discharge roller 6 .

[0069] like Figure 2 As shown, the first cutter 21L extends in a manner obliquely across the width direction of the first fabric 11L on the first route 1L. In addition, although not shown, the second cutter 21R also extends in a manner obliquely across the width direction of the second fabric 11R on the second route 1R. In addition, the first cutter 21L and the second cutter 21R are inclined in the same direction.

[0070] exist Figure 2 In the embodiment, the first pad 31L extends parallel to and obliquely along the first tool 21L downstream of the first tool 21L, adsorbing and holding the first tool 21L. Figure 7 Similarly, although not shown, the second pad 31R also extends parallel to and obliquely along the second cutter 21R downstream of the second cutter 21R, maintaining Figure 7 The starting end S of the second fabric 11R of A is as follows Figure 7 As shown in B, the two fabrics are joined with the first pad 31L sandwiched therebetween. In addition, the first pad 31L and the second pad 31R are inclined in the same direction and at the same angle to face each other so as to be able to fit together.

[0071] exist Figure 7In B, the first receiving portion 22L receives the blade of the first cutter 21L when the first cutter 21L cuts the first fabric 11L. Figure 7 In C, the second receiving portion 22R receives the blade of the second cutter 21R when the second cutter 21R cuts the second web 11R.

[0072] The first route 1L is set Figure 7 A is between the first receiving portion 22L and the first cutter 21L. On the other hand, the second route 1R is provided between the second receiving portion 22R and the second cutter 21R.

[0073] exist Figure 7 In A, the first cover 23L prevents the first web 11L and the first cutter 21L from contacting each other when the first cutter 21L is retracted to the non-cutting position P of the first web 11L. Similarly, the second cover 23R prevents the second web 11R and the second cutter 21R from contacting each other when the second cutter 21R is retracted to the non-cutting position P of the second web 11R.

[0074] In this example, the first route 1L is formed by the first fabric 11L passing between the first cover 23L and the first receiving portion 22L, while the second route 1R is formed by the second fabric 11R passing between the second cover 23R and the second receiving portion 22R.

[0075] The splicing device 10 includes a displacement device 60, which is configured to enable Figure 1 The first fabric 11L passes through the first route 1L and Figure 6 The second routes 1R through which the second fabrics 11R pass are parallel to each other (refer to Figure 7 A) is used to displace the position of the discharge roller 6. In this example, the first route 1L and the second route 1R are provided along a vertical plane and parallel to each other.

[0076] Figure 1 The displacement device 60 is composed of, for example, a fluid pressure cylinder, and can selectively dispose the discharge roller 6 at Figure 1 The first roller position P1 and Figure 6 The second roller position P2. Figure 1 When the discharge roller 6 is at the first roller position P1, the first fabric 11L passes through the first route 1L along a vertical plane. Figure 6 With the discharge roller 6 at the second roller position P2, the second fabric 11R passes through the second route 1R along another vertical plane.

[0077] In this way, since the position of the discharge roller 6 is displaced, Figure 7As shown in A, even before the first fabric 11L is sucked by the first pad 31L (during the conveyance of the fabric), in addition, Figure 7 B and Figure 7 As shown in C, even when each fabric is sandwiched between two pads, the suction surface 31f of each pad is parallel to each fabric.

[0078] That is, from the moment when the suction surface 31f of each pad is about to suck each fabric to the moment of suction, each pad and each suction surface 31f facing it are parallel. Therefore, wrinkles etc. are not easily generated in the fabric during suction.

[0079] For example, Figure 1 The first fabric 11L is moved from the first supply roller 5L to the first pad 31L along the suction surface 31f ( Figure 7 A) The planes extend in parallel. Therefore, when the first pad 31L adsorbs the first fabric 11L, wrinkles and the like are less likely to be generated in the first fabric 11L.

[0080] As shown in this example, Figure 7 A and Figure 7 The first blade 21L and the second blade 21R shown in B may each have a main blade edge 21M and a sub blade edge 21S. Each blade edge 21M and 21S passes through the through hole 23O of the first or second cover 23L or 23R and protrudes to reach the through hole 22O of the first or second receiving portion 22L or 22R.

[0081] Can be Figure 1 A storage unit (not shown) similar to the storage unit 50 of the known example is provided downstream of the discharge roller 6. In addition, a processing line can also be provided downstream of the storage unit. Figure 8 A and Figure 8 B shows a known stretching device 7, which performs stretching on the first web 11L and / or the second web 11R.

[0082] Then, if Fig. 9 A and Fig. 9 As shown in FIG. 2B , a method of splicing the webs together by overlapping the starting end S of the web 11R in the waiting state with the ending end E of the preceding web 11L will be described.

[0083] The fabric is connected or spliced ​​between the first conveying step and the second conveying step, wherein in the first conveying step, the first fabric 11L is connected to the first conveying step. Figure 1 The first supply roller 5L is conveyed along the first route 1L of the discharge roller 6. In the second conveying process, the second fabric 11R is conveyed from the first supply roller 5L to the first route 1L of the discharge roller 6. Figure 6 The second supply roller 5R is conveyed along the second route 1R of the discharge roller 6 .

[0084] Below, for the continuation of the fabric, Figure 1 The case where the first web 11L is conveyed followed by the second web 11R will be described as a representative example.

[0085] In order to Fig. 9 The first web 11L of A is connected to the second web 11R, and a first cutting process and a second cutting process are performed. In the first cutting process, the first route 1L is cut in a manner that is obliquely across the width direction of the first web 11L ( Figure 1 ) is cut in a second cutting step so as to obliquely cross the second web 11R in the width direction of the second web 11R. Figure 6 ) on the starting end of the second fabric 11R. Figure 7 In B, before the first cutting step, the first pad 31L sucks and holds the end portion E of the first web 11L on the first route 1L.

[0086] In this example, the fabrics are joined as follows.

[0087] exist Figure 1 In the first conveying step, the first fabric 11L is conveyed in the first route 1L, as shown in FIG. Figure 1 In the opened second unit U2, the starting end S ( Figure 7 A) Holding step of sucking and holding the second pad 31R: An adhesive tape is provided on the start end S on the side facing the first fabric 11L.

[0088] Then, if Figure 3 As shown, the second unit U2 is turned off.

[0089] Then, when the remaining amount of the first fabric 11L being conveyed becomes less than a predetermined amount, the movement (conveying) of the first fabric 11L in the first route 1L is stopped. At this time, the fabric stored in the storage unit 50 is released.

[0090] Then, by Figure 7 The first pad 31L of A absorbs and holds the first fabric 11L, Figure 7 The first cutter 21L of A cuts the first web 11L.

[0091] After the first fabric 11L is cut, a first overlapping step and a first connecting step are performed. In the first overlapping step, Figure 7The end portion E of the first fabric 11L and the start portion S of the second fabric 11R are sandwiched between the first pad 31L and the second pad 31R so that the end portion E and the start portion S overlap, and in the first joining step, the start portion S and the end portion E are joined to join the second fabric 11R to the first fabric 11L. Specifically, the first overlapping step and the first joining step are performed as follows.

[0092] like Figure 7 As shown in FIG. 2B , in the process of overlapping the end portion E of the first fabric 11L and the beginning portion S of the second fabric 11R, the second pad 31R is displaced toward the first pad 31L, and the two fabrics are sandwiched between the first pad 31L and the second pad 31R while keeping the adsorption surface 31f of the first pad 31L and the first fabric 11L on the first route 1L parallel to each other, and the first connection process is performed.

[0093] In this example, the adsorption surfaces of the first and second pads are always parallel to each other along the vertical plane, and are also parallel to the fabric on the first or second route.

[0094] The two pads 31L and 31R reciprocate along a horizontal axis perpendicular to the fabrics, and sandwich the two fabrics while maintaining the above-mentioned geometric relationship with the fabrics.

[0095] In this example, Fig. 9 The gray-colored starting end S of A is provided with adhesive, and the two fabrics are joined by clamping the fabrics.

[0096] After the first overlapping step and the first joining step, a first displacement step is performed. Figure 4 The discharge roller 6 is shifted from the first roller position P1 to Figure 5 The second roller position P2 is changed to Figure 4 The first route is parallel to 1L Figure 5 In addition, before the first displacement step, release Figure 7 B is adsorbed, and the second pad 31R returns to the origin position of the second retreat route.

[0097] exist Figure 3 as well as Figure 4 In the first overlapping step and the first connecting step, the discharge roller 6 is arranged at the first roller position P1 to hold the first web 11L on the first route 1L. Figure 6 In the second conveying process, the discharge roller 6 is arranged at the second roller position P2 to hold the second fabric 11R on the second route 1R. In this way, since each fabric is held on each route along the vertical plane, the fabric is always parallel to the suction surface 31f of each pad, so that wrinkles are not generated on the fabric during suction.

[0098] The case where the second woven fabric 11R is connected to the first woven fabric 11L has been described above. When the first woven fabric 11L is connected to the second woven fabric 11R, the process is the same as the above case, and will be briefly described below.

[0099] In this case, if Figure 7 As shown in C, after the second conveying process, a second overlapping process and a second connecting process are performed, wherein in the second overlapping process, the end portion E of the second fabric 11R and the starting end portion S of the first fabric 11L are clamped between the first pad 31L and the second pad 31R and the end portion E and the starting end portion S are overlapped, and in the second connecting process, the starting end portion S and the end portion E are joined to connect the first fabric 11L to the second fabric 11R.

[0100] After the second overlapping step and the second connecting step, the second displacement step is performed to displace the discharge roller 6 from the second roller position P2 to Figure 1 The first roller position P1 is from Figure 6 The second route 1R is changed to the first route 1L.

[0101] In the second overlapping step and the second connecting step, the discharge roller 6 is arranged at the second roller position P2 so as to Figure 6 The second fabric 11R is kept on the second route 1R. Then, Figure 1 In the first conveying step, the discharge roller 6 is arranged at the first roller position P1 to hold the first web 11L on the first route 1L.

[0102] exist Figure 7 In C, in the process of overlapping the end portion E of the second fabric 11R and the beginning portion S of the first fabric 11L, the first pad 31L is displaced toward the second pad 31R, and the two fabrics are sandwiched between the first pad 31L and the second pad 31R while keeping the adsorption surface 31f of the second pad 31R and the second fabric 11R on the second channel line 1R parallel to each other.

[0103] In addition, in the splicing device 10, the order of the cutting process and the connecting process is not limited, as long as the fabrics can be spliced ​​together in the end. For example, the cutting process and the connecting process can be performed simultaneously, or the fabric can be cut after the connecting process, or the connecting process can be performed after the cutting process.

[0104] However, before cutting the preceding fabric, it is preferred to use a pad to absorb and hold the end of the fabric. Figure 7 After the first fabric 11L of the A stops on the first route 1L, the first pad 31L immediately sucks and holds the portion that becomes the end portion E of the first fabric, and then Figure 7 The first cutter 21L of B cuts the first web 11L.

[0105] When these are adsorbed and held and cut off, due to Figure 1 The discharge roller 6 of the first pad 31L is at the first roller position, so the first web 11L is maintained on the first route 1L. That is, the first web 11L extends from the first supply roller 5L to the discharge roller 6 along a surface parallel to the adsorption surface of the first pad 31L.

[0106] Therefore, the first fabric 11L is always in contact with the first pad 31L. Figure 7 The suction surfaces 31f of B are arranged in parallel, so that wrinkles can be prevented from being accidentally generated on the first fabric 11L when the first pad 31L suctions the first fabric 11L.

[0107] On the other hand, the timing of the movement of the discharge roller 6 can be any timing as long as it is after the fabric that has been absorbed. Figure 7 After the end portion E of the first woven fabric 11L of A is cut, the first woven fabric 11L may be cut from Figure 1 The first roller position P1 is shifted to the second roller position P2. In addition, if it is after the adsorption, it can also be Figure 7 The displacement of the discharge roller 6 is performed before the overlapping and connecting steps of B.

[0108] In this case, it is considered that the first pad 31L has already sucked and held the first fabric 11L, and the possibility of wrinkles being generated at the end portion E is low.

[0109] The other structures are the same as those in the above-mentioned known example, and the corresponding parts are given the same reference numerals, and their description and illustration are omitted.

[0110] The invention grasped from the above-mentioned embodiments includes the following embodiments.

[0111] In the present splicing device, preferably, it further comprises: a first receiving portion 22L for receiving a blade of the first cutter 21L when the first cutter 21L cuts the first fabric 11L;

[0112] a second receiving portion 22R for receiving a blade of the second cutter 21R when the second cutter 21R cuts the second fabric 11R;

[0113] The first route 1L is disposed between the first receiving portion 22L and the first tool 21L;

[0114] The second route 1R is provided between the second receiving portion 22R and the second cutter 21R.

[0115] When the receiving portion is provided in this manner, the fabric can be accurately cut into a desired shape.

[0116] More preferably, it further includes: a first cover 23L, which prevents the first fabric 11L from contacting the first cutter 21L when the first cutter 21L retreats to the non-cutting position P of the first fabric 11L;

[0117] a second cover 23R for preventing the second fabric 11R from contacting the second cutter 21R when the second cutter 21R is retracted to the non-cutting position P of the second fabric 11R;

[0118] The first route 1L is formed so that the first fabric 11L passes between the first cover 23L and the first receiving portion 22L;

[0119] The second route 1R is formed so that the second fabric 11R passes between the second cover 23R and the second receiver 22R.

[0120] In this way, by forming the first and second routes between the receiving portion and the cover, the routes of the pair of fabrics are stabilized.

[0121] More preferably, the first and second covers 23L and 23R may be disposed so as to face the first and second receiving portions 22L and 22R, respectively.

[0122] In this case, since the receiving portion and the cover are opposed, the flow of the fabric on the route and the like are kept stable.

[0123] More preferably, it further comprises: a fixing frame 1, supporting the first receiving portion 22L and the second receiving portion 22R in a fixed state;

[0124] a first rotating frame 2L, supporting the first supply roller 5L, the first cover 23L, the first cutter 21L, and the first pad 31L;

[0125] a second rotating frame 2R, supporting the second supply roller 5R, the second cover 23R, the second cutter 21R and the second pad 31R;

[0126] The first actuator 4L rotates the first rotating frame 2L around the first hinge 3L in such a manner that the first supply roller 5L and the second supply roller 5R are separated and the first rotating frame 2L is opened;

[0127] The second actuator 4R rotates the second rotating frame 2R around the second hinge 3R so that the second supply roller 5R and the first supply roller 5L are separated and the second rotating frame 2R is opened.

[0128] In this case, the splicing operation becomes easy.

[0129] More preferably, the first supply roller 5L, the first cover 23L, the first cutter 21L, the first pad 31L and the first rotating frame 2L constitute a first unit U1;

[0130] The second supply roller 5R, the second cover 23R, the second cutter 21R, the second pad 31R and the second rotating frame 2R constitute a second unit U2;

[0131] It can be set to a state where one of the first or second covers and one of the first or second receiving parts 22L, 22R face each other and one of the first or second units U1, U2 is closed, and

[0132] A state in which the other of the first or second cover and the other of the first or second receiving portion are separated and the other of the first or second unit U1 , U2 is opened.

[0133] In this case, the splicing operation becomes easier.

[0134] Preferably, the first route 1L and the second route 1R are arranged to be parallel to each other along a vertical plane.

[0135] In this case, the fabric can be stably sucked and cut, and the generation of wrinkles can be reliably prevented.

[0136] Preferably, the first blade 21L and the second blade 21R each have a main blade edge 21M and a secondary blade edge 21S.

[0137] In this case, the fabric can be cut reliably.

[0138] In the present invention, a stretching device 7 may be provided downstream of the discharge roller 6, and the stretching device 7 may perform a stretching process on the first web 11L and / or the second web 11R.

[0139] Even when the fabric is processed by the stretching device 7, the connecting portion between the obliquely cut terminal end and the starting end is unlikely to be broken by the processing.

[0140] In the present splicing method, preferably, it further comprises: an end portion holding step of holding the end portion E of the first fabric 11L by using the first pad 31L;

[0141] In the terminal portion holding step, the discharge roller 6 is arranged at the first roller position P1 to maintain the first web 11L on the first route 1L;

[0142] In the second conveying step, the discharge roller 6 is arranged at the second roller position P2 so that the second web 11R passes through the second route 1R.

[0143] In this case, before and during the connection of the fabrics, the fabrics follow their own routes, so that the surfaces (adsorption surfaces) of the fabrics and the pads are in a parallel state facing each other. Therefore, wrinkles are not generated on the fabrics during adsorption.

[0144] More preferably, in the process of overlapping the end portion E of the first fabric 11L and the start portion S of the second fabric 11R, the second pad 31R is displaced toward the first pad 31L so that the two fabrics are sandwiched between the first pad 31L and the second pad 31R while keeping the adsorption surface 31f of the first pad 31L and the first fabric 11L on the first route 1L parallel to each other.

[0145] In this case, it is possible to more reliably prevent wrinkles from being generated in the fabric during splicing.

[0146] Preferably, the method further comprises: a second overlapping step of sandwiching the end portion E of the second fabric 11R and the start portion S of the first fabric 11L between the first pad 31L and the second pad 31R and overlapping the end portion E and the start portion S after the second conveying step;

[0147] In the second joining step, the start end portion S and the end end portion E are joined to join the first fabric 11L to the second fabric 11R;

[0148] The second displacement step is to displace the discharge roller 6 from the second roller position P2 to the first roller position P1 after the second overlapping step and the second connecting step, so as to change the route of the web from the second route 1R to the first route 1L.

[0149] When the first fabric is connected to the second fabric, wrinkles are not easily generated on the fabric.

[0150] Preferably, the method further comprises: an end portion holding step of holding the end portion E of the second fabric 11R by using the second pad 31R;

[0151] In the terminal portion holding step, the discharge roller 6 is arranged at the second roller position P2 to maintain the second web 11R on the second route 1R;

[0152] In the first conveying step, the discharge roller 6 is disposed at the first roller position P1 so that the first web 11L passes through the first route 1L.

[0153] In this case, similarly to the above, before and after the fabrics are connected, the adsorption surfaces of the fabrics and the pads are in a parallel state facing each other, so that wrinkles are not generated on the fabrics during adsorption.

[0154] More preferably, in the process of overlapping the end portion E of the second fabric 11R and the start portion S of the first fabric 11L, the first pad 31L is displaced toward the second pad 31R so that the two fabrics are sandwiched between the first pad 31L and the second pad 31R while keeping the adsorption surface 31f of the second pad 31R and the second fabric 11R on the second route 1R parallel to each other.

[0155] Even when the first woven fabric is connected to the second woven fabric, wrinkles can be more reliably prevented from being generated in the woven fabric.

[0156] Features described and / or illustrated in connection with one embodiment or preferred embodiments may be the same or similar in form in one or more other embodiments, and / or may be used in combination with or in place of other embodiments.

[0157] As mentioned above, although the preferred embodiment has been described with reference to the drawings, it is easy for a person skilled in the art to conceive various changes and modifications within an obvious scope after reading this specification.

[0158] For example, the device may be incorporated into a production line other than a wearable article.

[0159] Therefore, such changes and modifications are construed as within the scope of the present invention as defined by the claims.

[0160] Industrial Applicability

[0161] The present invention can be applied to the splicing of fabrics of diaper-type and underpants-type disposable wearing articles and the like.

[0162] Explanation of symbols

[0163] 1: Fixed frame

[0164] 1L: First route 1R: Second route

[0165] 10: Splicing device

[0166] 11L: First fabric 11R: Second fabric

[0167] 12L: first winding portion 12R: second winding portion 13: bracket portion

[0168] 14L, 14R: Remaining amount detection unit 15L, 15R: Driving roller 16L, 16R: Nipping roller

[0169] 2L: First rotating frame 2R: Second rotating frame

[0170] 20: Cutting part

[0171] 21L: First tool 21R: Second tool 21M: Main cutting edge 21S: Secondary cutting edge

[0172] 22L: first receiving portion 22R: second receiving portion 22O: through hole

[0173] 23L: First cover 23R: Second cover 23O: Through hole

[0174] 3L: First hinge 3R: Second hinge 30: Joint

[0175] 31L: First pad 31R: Second pad 31f: Adsorption surface

[0176] 32L, 32R: Driving mechanism

[0177] 4L: First actuator 4R: Second actuator

[0178] 40: Tension control unit 41: Tension roller 42: Rotating arm

[0179] 5L: First supply roller 5R: Second supply roller

[0180] 50: Storage unit 51: Fixed roller 52: Movable roller 53: Driving mechanism

[0181] 6: discharge roller 60: displacement device 7: stretching device

[0182] E: End part S: Beginning part

[0183] P: non-cutting position P1: first roller position P2: second roller position

[0184] U1: first unit U2: second unit

Claims

1. A splicing device for joining fabrics together by overlapping a starting end (S) of a fabric (11R) on standby with an ending end (E) of a preceding fabric (11L), comprising: A first fabric (11L) is conveyed from a first supply roller (5L) along a first route (1L) to a discharge roller (6); A second route (1R) in which the second fabric (11R) is transported from the second supply roller (5R) along the discharge roller (6); a first cutter (21L) extending obliquely across the width direction of the first fabric (11L) on the first route (1L); a second cutter (21R) extending obliquely across the width direction of the second fabric (11R) on the second route (1R); a first pad (31L) extending obliquely along the first cutter (21L) downstream of the first cutter (21L) and holding an end portion (E) of the first fabric (11L); A second pad (31R) is located downstream of the second cutter (21R), extends obliquely along the second cutter (21R), holds the starting end (S) of the second fabric (11R), and sandwiches and joins the two fabrics between the first pad (31L); The displacement device (60) is configured to be capable of displacing the position of the discharge roller (6) in such a manner that the first route (1L) and the second route (1R) become parallel to each other.

2. The splicing device according to claim 1, further comprising: a first receiving portion (22L) for receiving a blade of the first knife (21L) when the first knife (21L) cuts the first fabric (11L); a second receiving portion (22R) for receiving a blade of the second cutter (21R) when the second cutter (21R) cuts the second fabric (11R); The first route (1L) is arranged between the first receiving portion (22L) and the first tool (21L); The second route (1R) is provided between the second receiving portion (22R) and the second tool (21R).

3. The splicing device according to claim 2, further comprising: a first cover (23L) for preventing the first fabric (11L) and the first cutter (21L) from contacting each other when the first cutter (21L) is retreated to a non-cutting position (P) of the first fabric (11L); a second cover (23R) for preventing the second fabric (11R) and the second cutter (21R) from contacting each other when the second cutter (21R) is retreated to a non-cutting position (P) of the second fabric (11R); The first route (1L) is formed so that the first fabric (11L) passes between the first cover (23L) and the first receiving portion (22L); The second route (1R) is formed so that the second fabric (11R) passes between the second cover (23R) and the second receiving portion (22R).

4. The splicing device according to claim 3, wherein the splicing device is configured to be arranged so that the first cover (23L) and the second cover (23R) are respectively placed in a state opposite to the first receiving portion (22L) and the second receiving portion (22R).

5. The splicing device according to claim 4, further comprising: A fixed frame (1) supporting the first receiving portion (22L) and the second receiving portion (22R) in a fixed state; a first rotating frame (2L) supporting the first supply roller (5L), the first cover (23L), the first cutter (21L) and the first pad (31L); a second rotating frame (2R) supporting the second supply roller (5R), the second cover (23R), the second cutter (21R) and the second pad (31R); a first actuator (4L) for rotating the first rotating frame (2L) around the first hinge (3L) in such a manner that the first supply roller (5L) and the second supply roller (5R) are separated and the first rotating frame (2L) is opened; The second actuator (4R) rotates the second rotating frame (2R) around the second hinge (3R) in such a manner that the second supply roller (5R) and the first supply roller (5L) are separated and the second rotating frame (2R) is opened.

6. The splicing device according to claim 5, The first supply roller (5L), the first cover (23L), the first cutter (21L), the first pad (31L) and the first rotating frame (2L) constitute a first unit (U1); The second supply roller (5R), the second cover (23R), the second cutter (21R), the second pad (31R) and the second rotating frame (2R) constitute a second unit (U2); The splicing device can be set to a state where one of the first cover or the second cover and one of the first receiving portion (22L) or the second receiving portion (22R) are opposite, and one of the first unit (U1) or the second unit (U2) is closed, and The other of the first cover or the second cover is separated from the other of the first receiving portion or the second receiving portion, and the other of the first unit (U1) or the second unit (U2) is opened.

7. The splicing device according to any one of claims 1 to 6, The first route (1L) and the second route (1R) are arranged to be parallel to each other along a vertical plane.

8. The splicing device according to any one of claims 1 to 6, The first tool (21L) and the second tool (21R) both have a main cutting edge (21M) and a secondary cutting edge (21S).

9. The splicing device according to any one of claims 1 to 6, A stretching device (7) is provided downstream of the discharge roller (6), and the stretching device (7) performs a stretching process on the first fabric (11L) and / or the second fabric (11R).

10. A splicing method for joining fabrics together by overlapping a starting end (S) of a fabric (11R) on standby with an ending end (E) of a preceding fabric (11L), comprising: A first conveying step in which a first fabric (11L) is conveyed along a first route (1L) from a first supply roller (5L) to a discharge roller (6); a second conveying step of conveying the second fabric (11R) from the second supply roller (5R) along the second route (1R) of the discharge roller (6); a first cutting step of cutting the first fabric (11L) on the first route (1L) in a manner obliquely across the width direction of the first fabric (11L); a second cutting step of cutting the second fabric (11R) on the second route (1R) in a manner obliquely across the width direction of the second fabric (11R); A starting end holding step, wherein the starting end (S) of the second fabric (11R) is held on the second pad (31R); a first overlapping step, after the first conveying step, sandwiching the end portion (E) of the first fabric (11L) and the beginning portion (S) of the second fabric (11R) between a first pad (31L) and the second pad (31R) so that the end portion (E) and the beginning portion (S) overlap; a first joining step of joining the starting end portion (S) and the ending end portion (E) to join the second fabric (11R) to the first fabric (11L); A first displacement step, after the first overlapping step and the first connecting step, causes the discharge roller (6) to be displaced from a first roller position (P1) to a second roller position (P2) so that the route of the fabric is changed to the second route (1R) parallel to the first route (1L).

11. The splicing method according to claim 10, further comprising: an end portion holding step of holding an end portion (E) of the first fabric (11L) by using the first pad (31L); In the terminal portion holding step, the discharge roller (6) is arranged at the first roller position (P1) to maintain the first fabric (11L) on the first route (1L); In the second conveying step, the discharge roller (6) is arranged at the second roller position (P2) so that the second web (11R) passes through the second route (1R).

12. The splicing method according to claim 10 or 11, In the process of overlapping the end portion (E) of the first fabric (11L) and the beginning portion (S) of the second fabric (11R), the second pad (31R) is displaced toward the first pad (31L), and the two fabrics are sandwiched between the first pad (31L) and the second pad (31R) while keeping the adsorption surface (31f) of the first pad (31L) and the first fabric (11L) on the first route (1L) parallel to each other.

13. The splicing method according to claim 10, further comprising: a second overlapping step, after the second conveying step, sandwiching the end portion (E) of the second fabric (11R) and the beginning portion (S) of the first fabric (11L) between the first pad (31L) and the second pad (31R) so that the end portion (E) and the beginning portion (S) overlap; a second joining step of joining the start end portion (S) and the end end portion (E) to join the first fabric (11L) to the second fabric (11R); A second displacement step, after the second overlapping step and the second connecting step, causes the discharge roller (6) to be displaced from the second roller position (P2) to the first roller position (P1) so that the route of the fabric is changed from the second route (1R) to the first route (1L).

14. The splicing method according to claim 13, further comprising: an end portion holding step of holding an end portion (E) of the second fabric (11R) by using the second pad (31R); In the terminal holding step, the discharge roller (6) is arranged at the second roller position (P2) to maintain the second fabric (11R) on the second route (1R); In the first conveying step, the discharge roller (6) is arranged at the first roller position (P1) so that the first web (11L) passes through the first route (1L).

15. The splicing method according to claim 13 or 14, In the process of overlapping the end portion (E) of the second fabric (11R) and the beginning portion (S) of the first fabric (11L), the first pad (31L) is displaced toward the second pad (31R), and the two fabrics are sandwiched between the first pad (31L) and the second pad (31R) while keeping the adsorption surface (31f) of the second pad (31R) and the second fabric (11R) on the second route (1R) parallel to each other.

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