Continuous body supply device

Abstract

To provide a continuous body supply device capable of stabilizing the conveyance state of a continuous body even when the conveyance speed of the continuous body is increased.SOLUTION: A continuous body supply device comprises: (a) a movement unit 30 having a plurality of defining members 34, 36 and 38 defining a conveyance path 7 of a continuous body 6 pulled out from a top face 4s of an accumulated body 4 in an upper part of the accumulated body 4 formed by folding back the continuous body 6 in the longitudinal direction to stack and disposed at a prescribed position 8; and (b) lifting devices 20a and 20b for elevating / lowering the movement unit 30 so as to keep the distances between the top face 4s of the accumulated body 4 and the defining members 34, 36 and 38 of the movement unit 30 within a certain range. The movement unit 30 has a top face regulation member 40 disposed along the top face 4s of the accumulated body 4. Among the defining members 34, 36 and 38 of the movement unit 30, the first defining member 34 which first defines the conveyance path 7 is disposed in the vicinity of the top face 4s of the accumulated body 4.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a continuous web supplying device, and more particularly to a device for pulling out a continuous web from a pile of continuous webs that have been stacked by folding them back in the longitudinal direction, and supplying the continuous web to a subsequent process. [Background technology]

[0002] For example, a continuous web of intermediate products may be wound up into a roll or folded over in the longitudinal direction to form an accumulated body, and the continuous web may be pulled out from the accumulated body as needed to produce a product.

[0003] Fig. 7 is a schematic diagram of a continuum supplying device that pulls out a continuum from an accumulation body 100 in which the continuum is folded back in the longitudinal direction and stacked, and supplies it to a subsequent process. As shown in Fig. 7, this continuum supplying device is configured such that the accumulation body 100 is placed at a predetermined position in a frame-type rack 101, and the continuum pulled out upward from the top surface of the accumulation body 100 is transported along a predetermined path (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] China Patent Application Publication No. 107265161 Summary of the Invention [Problem to be solved by the invention]

[0005] In order to manufacture products efficiently, it is conceivable to increase the conveying speed of the continuous web pulled out from the stack.

[0006] However, when the continuous body is pulled out from the stack of continuous bodies that are stacked by folding them in the longitudinal direction, the position where the continuous body leaves the top surface of the stack moves, and the direction in which the continuous body moves immediately after being pulled out from the top surface of the stack varies. Therefore, if the conveying speed of the continuous body pulled out from the stack is increased, the state of the continuous body immediately after being pulled out from the top surface of the stack is likely to become disturbed. In particular, continuous bodies that are not uniform in cross-sectional shape or mass distribution are likely to become significantly disturbed immediately after being pulled out from the top surface of the stack. This makes the conveying of the continuous body unstable, leading to a deterioration in product quality.

[0007] In view of the above situation, the problem that the present invention aims to solve is to provide a continuous material supplying device that can stably transport a continuous material even when the transport speed of the continuous material pulled out from a stack of continuous materials folded longitudinally is increased. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides a continuum supplying device configured as follows.

[0009] The continuous material supplying device includes (a) a moving unit having a plurality of regulating members that regulate a transport path of the continuous material pulled out from an upper surface of an accumulation body arranged at a predetermined position, the accumulation body being formed by stacking the continuous material folded in the longitudinal direction, and (b) a lifting device that lifts and lowers the moving unit so as to keep the distance between the upper surface of the accumulation body and the regulating members of the moving unit within a certain range. The moving unit has an upper surface regulating member that is arranged along the upper surface of the accumulation body. Of the regulating members of the moving unit, a first regulating member that initially regulates the transport path is arranged near the upper surface of the accumulation body.

[0010] According to the above configuration, the upper surface regulating member of the moving unit regulates the upward movement of the continuum from the upper surface of the accumulation body when the continuum is pulled out from the upper surface of the accumulation body. Also, since the distance from the upper surface of the accumulation body to the first regulating member is short, disturbance of the continuum when it is pulled out from the upper surface of the accumulation body is suppressed.

[0011] Therefore, even if the transport speed of the continuous web pulled out from the stack is increased, the transport of the continuous web is stable.

[0012] Preferably, the first defining member of the moving unit is arranged outside a region facing the upper surface of the accumulation body.

[0013] In this case, the continuum is pulled out in one direction from the top surface of the storage body along the top surface of the storage body toward the outside of the top surface of the storage body, and disturbance when pulled out from the storage body is suppressed. The top surface regulating member can be arranged along the entire top surface of the storage body, thereby achieving maximum effect. In addition, the top surface regulating member can be arranged only on one side of the first determining member, which simplifies the configuration compared to the case where the top surface regulating members are arranged on both sides of the first determining member.

[0014] Preferably, the upper surface regulating member of the moving unit is a flexible sheet, and both ends of the sheet are held so as to face a pair of side surfaces of the stack on which the portions of the stack extending in the longitudinal direction of the continuous body are aligned.

[0015] In this case, when the continuous body is pulled out from the top surface of the storage body, the movement of the continuous body upward from the top surface of the storage body can be reliably restricted, and the side surface of the storage body can be prevented from collapsing. Effect of the Invention

[0016] According to the present invention, the transport of the continuous web can be stabilized even if the transport speed of the continuous web pulled out from the stack formed by folding the continuous web in the longitudinal direction and stacking it is increased. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a front view of a continuum supplying device (Example 1). [Diagram 2] Fig. 2 is a schematic cross-sectional view taken along line AA in Fig. 1. (Example 1) [Diagram 3]Fig. 3(a) is a schematic plan view of the storage body. Fig. 3(b) is a schematic front view taken along line BB in Fig. 3(a). (Example 1) [Figure 4] FIG. 4 is a schematic diagram of the main part of a continuum supplying device (Example 1). [Diagram 5] FIG. 5 is a schematic diagram of the main part of a continuum supplying device (Modification 1). [Figure 6] FIG. 6 is a schematic diagram of the main part of the continuum supplying device (Modification 2). [Figure 7] FIG. 7 is a schematic diagram of a continuum supplying device (conventional example 1). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0019] Example 1 A continuum supplying device 10 according to Example 1 will be described with reference to Figs.

[0020] Fig. 1 is a schematic front view of a continuum supplying apparatus 10. Fig. 2 is a schematic cross-sectional view taken along line AA in Fig. 1.

[0021] As shown in Figures 1 and 2, the continuum supply device 10 is configured such that an accumulation body 4 is placed at a predetermined position 8 surrounded by a main body frame 12, a moving unit 30 is placed above the accumulation body 4, and the moving unit 30 is raised and lowered by lifting devices 20a, 20b.

[0022] The stack 4 is formed by stacking the continuous bodies 6 on the pallet 2 in a folded-back manner in the longitudinal direction. The stack 4 has a pair of end faces 4a, 4b where the folded-back portions 6x of the continuous bodies 6 are aligned, a pair of side faces 4p, 4q where the portions of the continuous bodies 6 extending in the longitudinal direction are aligned, and a top face 4s.

[0023] The moving unit 30 is configured so that the continuous web 6 pulled out from the upper surface 4s of the accumulator 4 is transported along a transport path 7 defined by first to third guide rolls 34, 36, and 38. The moving unit 30 has a regulating sheet 40 disposed along the upper surface 4s of the accumulator 4. The first to third guide rolls 34, 36, and 38 may be drive rolls that are driven to rotate, or may be free rolls that are freely rotatable.

[0024] When the continuous body 6 is pulled out from the upper surface 4s of the accumulation body 4 and the upper surface 4s of the accumulation body 4 descends, the lifting devices 20a, 20b accordingly lower the moving unit 30 to maintain the distance between the first to third guide rolls 34, 36, 38 of the moving unit 30 and the upper surface 4s of the accumulation body 4 within a certain range.

[0025] A more detailed explanation will be given. In the moving unit 30, a pair of support plates 32a, 32b are fixed to both ends of a connecting member 35, and overhanging members 33a, 33b are connected to the lower parts of the support plates 32a, 32b so as to protrude on both sides. A first guide roll 34 is rotatably supported between the overhanging members 33a, 33b, and second and third guide rolls 36, 38 are rotatably supported between the support plates 32a, 32b. Sensors 33s, 33t for detecting the upper surface 4s of the storage body 4 are attached to the connecting member 35. The sensors 33s, 33t are, for example, distance measuring sensors.

[0026] Of the first to third guide rolls 34, 36, 38, the first guide roll 34 is a first regulating member 34 that first defines the transport path 7 of the continuum 6 pulled out from the upper surface 4s of the accumulation body 4, and is disposed in the vicinity of the upper surface 4s of the accumulation body 4. Instead of the first guide roll 34, a non-rotating member of an appropriate shape may be used as the first regulating member 34.

[0027] The regulating sheet 40 is a flexible sheet such as a transparent vinyl sheet. In FIG. 1, the regulating sheet 40 and the upper surface 4s of the accumulator 4 are illustrated as being separated from each other, but the regulating sheet 40 is in contact with the upper surface 4s of the accumulator 4 and covers the upper surface 4s of the accumulator 4.

[0028] Both ends of the regulating sheet 40 are fixed to sheet holding members 33p, 33q provided below the protruding members 33a, 33b so that both end portions 40p, 40q of the regulating sheet 40 face the side surfaces 4p, 4q of the accumulation body 4.

[0029] The regulating sheet 40 may be translucent or opaque. The both ends 40p, 40q of the regulating sheet 40 may be disposed at the same height as the upper surface 4s of the storage body 4 or above the upper surface 4s of the storage body 4 so that the both ends 40p, 40q of the regulating sheet 40 do not face the side surfaces 4p, 4q of the storage body 4. Also, there may be a gap between the regulating sheet 40 and the upper surface 4s of the storage body 4, or the regulating sheet 40 may be disposed along a portion of the upper surface 4s of the storage body 4.

[0030] The regulating sheet 40 is an upper surface regulating member disposed along the upper surface 4s of the accumulation body 4. As the upper surface regulating member, a plate-like or rod-like member may be disposed along the upper surface 4s of the accumulation body 4 instead of the regulating sheet 40. The upper surface regulating member may be a rigid body or an elastic body.

[0031] The lifting devices 20a, 20b have a main body 22 and a movable part 24 that moves relative to the main body 22, and support plates 32a, 32b of a moving unit 30 are fixed to the movable part 24. The lifting devices 20a, 20b are controlled by a control device (not shown) such as a sequencer. Based on detection signals from sensors 33s, 33t provided in the moving unit 30, the control device lifts and lowers the movable part 24 so that the distance between the first to third guide rolls 34, 36, 38 of the moving unit 30 and the upper surface 4s of the accumulation body 4 is maintained within a certain range.

[0032] Next, an example of the storage body 4 will be described with reference to Figures 3(a) and 3(b). Figure 3(a) is a schematic diagram of the storage body 4 as seen from above. Figure 3(b) is a schematic front view as seen along line BB in Figure 3(a).

[0033] In Fig. 3(a), the center line 6c of the continuum 6 is indicated by a solid line. When the continuum 6 is accumulated on the pallet 2, as shown in Fig. 3(a), the continuum 6 is repeatedly folded back in the longitudinal direction while moving the position of the continuum 6 in the direction indicated by the arrow 3a so that the start position 6a and end position 6b of one longitudinal fold of the continuum 6 are shifted in the width direction of the continuum 6, and the continuum 6 is disposed over substantially the entire surface of the pallet 2. At this time, the folded back portions 6x of the continuum 6 are made to overlap each other as shown in Fig. 3(b).

[0034] Next, the continuous body 6 is moved in the opposite direction as indicated by the arrow 3b, while repeatedly folding back and forth in the longitudinal direction. Thereafter, the continuous body 6 is similarly moved back and forth in the width direction while repeatedly folding back and forth in the longitudinal direction, thereby piling up the continuous body 6 and forming the accumulation body 4.

[0035] Next, the first guide roll 34 and the regulating sheet 40 will be further described with reference to Fig. 4. Fig. 4 is a schematic diagram of the main part of the continuum supplying device 10.

[0036] 4, the first guide roll 34 is disposed outside the region 9 facing the upper surface 4s of the accumulator 4 and in the vicinity of the upper surface 4s of the accumulator 4. Specifically, assuming that the width of the continuum 6 pulled out from the accumulator 4 is W0, the distance between the first guide roll 34 and the upper surface 4s of the accumulator 4 is H1, and the distance between the first guide roll 34 and the end surface 4b of the accumulator 4 is D1, the first guide roll 34 is disposed so as to satisfy, for example, the following formulas 1 and 2. 0≦H1 / W0≦0.5 (Formula 1) 0≦D1 / W0≦0.5 (Formula 2)

[0037] Although not shown, it is also possible to position the guide roll 34 so that the lower end 34k of the guide roll 34 is positioned lower than the upper surface 4s of the accumulation body 4 outside the area 9 facing the upper surface 4s of the accumulation body 4.

[0038] The restricting sheet 40 preferably covers the outer peripheral edge 4m of the upper surface 4s of the accumulation body 4 on the side opposite the first guide roll 34, but may cover up to just before the outer peripheral edge 4m.

[0039] In the continuum supplying device 10 configured as above, the behavior of the continuum 6 immediately after it is pulled out from the upper surface 4s of the accumulation body 4 is more stable than in the conventional device.

[0040] In other words, when the continuum 6 is pulled out from the upper surface 4s of the accumulation body 4, the regulating sheet 40 of the moving unit 30 regulates the movement of the continuum 6 upward from the upper surface 4s of the accumulation body 4, so that the continuum 6 is pulled out in a stably state along the upper surface 4s of the accumulation body 4.

[0041] Since the first guide roll 34 of the moving unit 30 is disposed in the vicinity of the upper surface 4s of the accumulator 4, the distance from the upper surface 4s of the accumulator 4 to the first guide roll 34 is short. In other words, the distance that the continuum 6 drawn out from the upper surface 4s of the accumulator 4 moves in a free state is short. Therefore, disturbance of the continuum is suppressed.

[0042] Therefore, in the continuum supplying device 10, even if the conveying speed of the continuum 6 drawn out from the upper surface 4s of the accumulation body 4 is increased, the conveying state of the continuum 6 is stable.

[0043] <Modification 1> Fig. 5 is a schematic diagram of a main part of a continuum supplying device 10a of modification 1. As shown in Fig. 5, instead of one guide roll 34, a pair of first guide rolls 34a, 34b are disposed as a first regulating member so as to face the upper surface 4s of the accumulator 4, and on both sides of the first guide rolls 34a, 34b are disposed as upper surface regulating members so as to cover the upper surface 4s of the accumulator 4, instead of one regulating sheet 40.

[0044] The pair of first guide rolls 34a, 34b are disposed near the upper surface 4s of the accumulator 4. Specifically, assuming that the width of the continuum 6 pulled out from the accumulator 4 is W0 and the distance between the first guide rolls 34a, 34b and the upper surface 4s of the accumulator 4 is H2, the pair of first guide rolls 34a, 34b are disposed so as to satisfy, for example, the following formula 3. 0≦H2 / W0≦0.5 (Formula 3)

[0045] The restricting sheets 40a, 40b may extend to just before the outer peripheral edges 4m, 40n of the upper surface 4s of the accumulation body 4, extend to the outer peripheral edges 4m, 40n, or extend beyond the outer peripheral edges 4m, 40n.

[0046] <Modification 2> Fig. 6 is a schematic diagram of a main part of a continuum supplying device 10b of modification 2. As shown in Fig. 6, one first guide roll 34c, which is a first regulating member, is disposed above and facing the upper surface 4s of the accumulation body 4, and one regulating sheet 40c is disposed on one side of the first guide roll 34c.

[0047] The first guide roll 34c is disposed near the upper surface 4s of the accumulator 4. Specifically, assuming that the width of the continuum 6 pulled out from the accumulator 4 is W0 and the distance between the first guide roll 34c and the upper surface 4s of the accumulator 4 is H3, for example, the first guide roll 34c is disposed so as to satisfy the following formula 4. 0≦H3 / W0≦0.5 (Formula 4)

[0048] <Summary> As described above, the continuum supplying devices 10, 10a, 10b stably transport the continuum 6 even when the transport speed of the continuum 6 pulled out from the accumulator 4 in which the continuum 6 is folded back in the longitudinal direction and piled up is increased. As a result, products can be efficiently manufactured using the continuum 6 pulled out from the accumulator 4.

[0049] The present invention is not limited to the above-described embodiment, but can be implemented with various modifications.

[0050] For example, the number of upper surface regulating members may be three or more. [Explanation of symbols]

[0051] 4 Accumulator 4s top 6 Continuum 7. Transport Route 8 Predetermined position 10, 10a, 10b Continuum supply device 20a, 20b Lifting device 30 Mobile Units 34, 34a, 34b, 34c First guide roll (first defining member) 40, 40a, 40b, 40c Restriction sheet (upper surface restriction member) 40p, 40q both ends

Claims

1. a moving unit having a plurality of defining members for defining a transport path of the continuous web pulled out from an upper surface of the stack, the defining members being disposed above a stack in a predetermined position, the continuous web being folded back in the longitudinal direction; a lifting device that lifts and lowers the moving unit so as to keep the distance between the upper surface of the storage body and the defining member of the moving unit within a certain range; Equipped with the moving unit has an upper surface regulating member arranged along the upper surface of the storage body, a first defining member that initially defines the transport path among the defining members of the moving unit, the first defining member being disposed adjacent to the upper surface of the stack;

2. 2. The continuum supplying device according to claim 1, wherein the first defining member of the moving unit is disposed outside a region facing the upper surface of the accumulation body.

3. the upper surface regulating member of the moving unit is a flexible sheet, 3. The continuous web supplying device according to claim 1, wherein both ends of the sheet are held so as to face a pair of side surfaces of the stack on which the portion extending in the longitudinal direction of the continuous web is aligned.

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