JP2023047043A - Sheet feeder, sheet transport system, forming system, method for feeding sheets, and method for transporting sheets - Google Patents

Abstract

To inhibit sheet elongation during sheet deformation.SOLUTION: A sheet feeder 20 has pulling means 21, a plate member 23, a roller 25, and cutting means 27. The pulling means 21 applies tension to a film 10 from a first side in a first direction d1. The plate member 23 has an uneven shape 23a and pushes the film 10 in a second direction d2 which is non-parallel to the first direction d1. A roller 25 presses the film 10 against the plate member 23 along the uneven shape 23a. The cutting means 27 cuts the film 10.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD The present disclosure relates to a sheet feeding device, a sheet conveying system having the sheet feeding device, a forming system having the sheet conveying system, a method of feeding a sheet, and a method of conveying a sheet.

For example, like the molding system described in Patent Literature 1, there is known a system that uses an injection molding machine to provide molded parts on a sheet to produce a molded product. With such a molding system, the sheet can be easily provided with complex shaped molded parts. The seat has a design. The desired design can be imparted to the molded article by the design of the sheet.

WO2018/186414

The sheet deforms as it passes through the mold of the injection molding machine. If the mold of the injection molding machine has a complicated shape, the sheet may be stretched and deformed when the sheet is transferred to the mold. When the sheet is stretched, the design on the sheet is also stretched. As a result, the design imparted to the molded product becomes unintended. It is conceived that the shape of the holding portion that holds the sheet when passing the sheet to the mold should be adapted to the mold. According to the holding portion having such a shape, the sheet is less likely to be stretched when the sheet is transferred to the mold.

If the shape of the holding portion is adapted to the mold, the shape of the holding portion may become complicated. If the holding portion has a complicated shape, the sheet may be stretched when held by the holding portion. When the sheet is stretched when the sheet is held by the holding portion, the design provided on the sheet is stretched. As a result, the design imparted to the molded product becomes unintended. An object of the present disclosure is to suppress elongation of the sheet when the sheet is deformed.

A first sheet feeding device of the present disclosure is a sheet feeding device that feeds a sheet,
tensioning means for applying tension to the film from a first side in a first direction;
a plate member having an uneven shape and pushing out the film in a second direction non-parallel to the first direction;
a roller that presses the film against the plate member along the uneven shape;
and cutting means for cutting the film.

In the first sheet feeding device of the present disclosure, the roller may press the film against the plate member from the second side to the first side in the first direction.

In the first sheet feeding device of the present disclosure, the plate member may have two or more concave shapes and two or more convex shapes.

A second sheet feeding device of the present disclosure is a sheet feeding device that feeds a sheet,
tensioning means for applying tension to the film from a first side in a first direction;
a plate member having an uneven shape and pushing out the film in a second direction non-parallel to the first direction;
and a cutting means for cutting the film,
The plate member includes a plurality of plate elements that independently extrude the film in the second direction.

In the second sheet feeding device of the present disclosure, at least some of the plurality of plate elements may be arranged in the first direction.

The second sheet feeding device of the present disclosure may further include a plurality of elastic members provided on the plate element.

In the second sheet feeding apparatus of the present disclosure, each plate element may have only one of concave shape or convex shape.

In the first and second sheet feeding devices of the present disclosure, the uneven shape may be formed along the first direction.

In the first and second sheet feeding devices of the present disclosure,
the first direction is a vertical direction;
The cutting means may cut the lower side of the film in the vertical direction.

In the first and second sheet feeding devices of the present disclosure, the plate member may have suction holes for sucking the film.

A first sheet transport system of the present disclosure includes:
any one of the sheet feeding devices described above;
a head having a holding portion that holds the sheet;
a driving device for driving the head,
The holding portion has a second concave-convex shape that fits with the concave-convex shape of the plate member.

A second sheet transport system of the present disclosure includes:
a sheet feeding device for feeding a sheet;
a head having a holding portion that holds the sheet;
a driving device for driving the head,
The holding portion includes a plurality of holding elements that independently hold the sheets.

In the second sheet conveying system of the present disclosure,
The sheet feeder has tensioning means for applying tension to the film from a first side in a first direction,
At least some of the retaining elements may be aligned in the first direction.

In the second sheet conveying system of the present disclosure, the head may further have a plurality of second elastic members provided on each holding element.

In the second sheet conveying system of the present disclosure,
The sheet feeding device has a plate member having an uneven shape,
The holding portion may have a second concave-convex shape that fits with the concave-convex shape of the plate member.

In the second sheet transport system of the present disclosure, each retaining element may have only one of the second concave shape or the second convex shape.

In the first and second sheet conveying systems of the present disclosure, the holding section may have a second suction hole for sucking the sheet.

In the first and second sheet conveying systems of the present disclosure, the head may further include a heater that heats the sheet held by the holding section.

The molding system of the present disclosure includes:
any of the sheet transport systems described above;
an injection molding machine that molds a molded product in the accommodation space that accommodates the sheet.

The method of supplying the first sheet of the present disclosure comprises:
applying tension to the film from a first side in a first direction;
extruding the film in a second direction non-parallel to the first direction by a plate member;
moving a roller from the second side to the first side in the first direction to press the film against the plate member along the uneven shape of the plate member;
and cutting the film into sheets.

The method of supplying the second sheet of the present disclosure comprises:
applying tension to the film from a first side in a first direction;
extruding the film in a second direction non-parallel to the first direction by a plate member;
and cutting the film into sheets,
In the step of extruding the film by the plate member, the plurality of plate elements possessed by the plate member are arranged in order from the plate element positioned on the second side in the first direction to the plate element positioned on the first side. extruding the film in a direction.

A method of conveying a sheet of the present disclosure includes:
tensioning the film from a first side in a first direction;
extruding the film in a second direction non-parallel to the first direction by a plate member;
a holding portion holding the film;
cutting the film into sheets;
and a step of driving a head having the holding portion,
In the step of holding the film by the holding portion, holding elements of the holding portion are arranged in order from the holding element located on the second side in the first direction to the holding element located on the first side. including the step of holding

According to the present disclosure, it is possible to suppress elongation of the sheet when the sheet is deformed.

FIG. 1 is a top view schematically showing the entire molding system. FIG. 2 is a side view of the sheet feeding device observed from a direction parallel to the sheet surface of the sheet fed by the sheet feeding device of the first embodiment. FIG. 3 is a front view of the sheet feeding device observed from the normal direction of the sheet surface of the sheet fed by the sheet feeding device of the first embodiment. FIG. 4 is a perspective view of a plate member included in the sheet feeding device according to the first embodiment. FIG. 5 is a front view schematically showing the head and drive device. FIG. 6 is a diagram schematically showing an injection molding machine and a head arranged between the first mold and the second mold of the injection molding machine. FIG. 7 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the first embodiment. FIG. 8 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the first embodiment. FIG. 9 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the first embodiment. FIG. 10 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the first embodiment. FIG. 11 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the first embodiment. FIG. 12 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the second embodiment. FIG. 13 is a side view showing a process of supplying a sheet to the head by the sheet supply device in the second embodiment. FIG. 14 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the second embodiment. FIG. 15 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the second embodiment. FIG. 16 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the second embodiment. FIG. 17 is a side view showing a process of supplying a sheet to the head by the sheet supply device in the second embodiment. FIG. 18 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the third embodiment. FIG. 19 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the third embodiment. FIG. 20 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the third embodiment. FIG. 21 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the third embodiment. FIG. 22 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the third embodiment. FIG. 23 is a side view showing the process of supplying the sheet to the head by the sheet supply device in the third embodiment.

An embodiment of the present invention will be described below with reference to the drawings. The scales, vertical and horizontal dimension ratios, etc. in the drawings attached to this specification are changed and exaggerated from those of the real thing for ease of illustration and understanding.

The “sheet surface” refers to a surface that coincides with the plane direction of the target sheet-like member when the target sheet-like member is viewed as a whole and from a broad perspective.

As used herein, terms specifying shapes and geometric conditions as well as degrees thereof, such as "parallel," "perpendicular," "identical," and length and angle values, etc., are strictly It is interpreted to include the extent to which similar functions can be expected without being bound.

FIG. 1 schematically shows a top view of the molding system of this embodiment. The molding system 1 produces a molding 13 in which a sheet 11 is provided with a molded part 12 . As shown in FIG. 1, the molding system 1 is covered with a clean booth 5 to prevent foreign matter from entering the molding system 1 unintentionally from the outside. The clean booth 5 is provided with a first opening 6 on a first side s1 in the flow direction dF and a second opening 7 on a second side s2 in the flow direction dF. In the clean booth 5 , air flows in from the first opening 6 and air flows out from the second opening 7 . Air flows in the clean booth 5 from the first side s1 to the second side s2 in the flow direction dF. Due to the flow of air, it is possible to suppress foreign substances from adhering to the sheet 11 and the like from the outside in each device and the like of the molding system 1 . In the illustrated example, the flow direction dF is shown as a linear direction, but it may also be a direction along a curve or a polygonal line. For example, the flow direction dF may be an L-shaped curved direction.

As shown in FIG. 1 , molding system 1 includes sheet transport system 3 , injection molding machine 50 and collection station 90 . The sheet conveying system 3 includes a sheet feeding device 20, a head 30, and a driving device 40. As shown in FIG. In particular, in the example shown in FIG. 1, in the molding system 1, from the first side s1 to the second side s2 in the machine direction dF, the sheet feeding device 20, the injection molding machine 50, the collecting position 90 are: Each component is lined up. The sheet supply device 20 supplies the sheet 11 by cutting the film 10 into a predetermined size. The head 30 receives the sheet 11 and holds the sheet 11 . The head 30 is driven by the driving device 40 to convey the sheet 11 to the injection molding machine 50 . Injection molding machine 50 receives sheet 11 from head 30 . The injection molding machine 50 provides the molded part 12 on the sheet 11 to produce the molded product 13 . Molded product 13 is held by head 30 . Head 30 is driven by drive 40 to transport molded article 13 to collection position 90 . Through such steps, the molding system 1 can manufacture the molded product 13 .

Sheet 11 is formed by cutting film 10 . The film 10 is in a roll shape and fed to the sheet feeding device 20 as appropriate. The dimensions of the sheet 11 may be rectangular, for example, with a roll feed length of 15 cm or more and 150 cm or less and a roll width of 15 cm or more and 100 cm or less. The thickness of the sheet 11 may be, for example, 50 μm or more and 1000 μm or less. Sheet 11 may be of any shape and size. The sheet 11 is made of a thermoplastic resin that softens when heated. The material of sheet 11 may be acrylic, PET, ABS, polyethylene, polypropylene, polycarbonate, for example. The sheet 11 may be provided with designs such as patterns, characters, and pictures. It is preferable that the design provided on the sheet 11 is properly displayed by the intended deformation of the sheet 11 when the sheet 11 is held by the head 30 or the like. The design provided on the seat 11 is preferably provided in consideration of intended deformation such as when the seat 11 is held by the head 30 .

The molding system 1 and the sheet conveying system 3 of the first to third embodiments will be described below.

<First Embodiment>
Each component of the forming system 1 and the sheet conveying system 3 of the first embodiment will be described in detail.

FIG. 2 shows a side view of the sheet feeding device 20 of the first embodiment. More specifically, FIG. 2 shows the sheet feeding device 20 viewed from a direction parallel to the sheet surface of the sheet 11 to be fed. The sheet supply device 20 supplies sheets 11 of predetermined dimensions.
The film 10 forming the sheet 11 is fed out to the sheet feeding device 20 . In the sheet feeding device 20, it is preferable that the film 10 is let out from the lower side in the vertical direction to the upper side. In this case, the installation area of the sheet feeding device 20 can be made smaller than when the film 10 is fed out in the horizontal direction. As shown in FIG. 2, the sheet feeding device 20 has a pulling means 21, a clamp 22, a plate member 23, a roller 25, a cutting means 27 and a sensor 28. As shown in FIG.

The clamp 22 consists of a first clamp 22a and a second clamp 22b in the illustrated example. The film 10 is sandwiched between the first clamp 22a and the second clamp 22b. FIG. 3 shows the sheet feeding device 20 observed from the normal direction of the sheet surface of the sheet 11 to be fed. As shown in FIGS. 2 and 3, the first clamp 22a clamps the second side s4 of the film 10 in the first direction d1, and the second clamp 22b clamps the second side s4 of the film 10 in the first direction d1. 1 side s3 is clamped. In the example shown in FIG. 3, the first clamp 22a and the second clamp 22b are shown as bar-shaped, but may be of any shape.

The tension means 21 applies tension to the film 10 from the first side s3 in the first direction d1 while the clamps 22 are holding the film 10 therebetween. In the example shown in FIG. 2, the pulling means 21 is a roll on which the film 10 is partially wound. By rotating the roll, the tension applied to the film 10 held by the clamps 22 can be kept substantially constant. The pulling means 21 is not limited to rolls, and may be any member.

The first direction d1 is preferably vertical. The first side s3 in the first direction d1 is preferably the lower side in the vertical direction.

The plate member 23 moves the film 10 clamped by the first clamps 22a toward the head 30 by pushing it out, for example. In order to push the film 10 toward the head 30 in the sheet feeder 20, the plate member 23 is arranged on the opposite side of the head 30 of the first clamp 22a. In the example shown in FIG. 2, the head 30 approaches the sheet feeder 20 from the second side s6 in the second direction d2. The plate member 23 is arranged on the first side s5 in the second direction d2 of the first clamp 22a. The plate member 23 pushes the film 10 to the second side s6 in the second direction d2.

The second direction d2 is a direction non-parallel to the first direction d1, and preferably orthogonal to the first direction d1. If the first direction d1 is vertical, the second direction d2 is horizontal.

The plate member 23 has an uneven shape 23a. As the plate member 23 pushes out the film 10, the film 10 is deformed according to the uneven shape 23a. The concave-convex shape 23a has a shape corresponding to the shape that deforms the film 10 . A perspective view of the plate member 23 is shown in FIG. As shown in FIGS. 2 and 4, the uneven shape 23a of the plate member 23 is formed along the first direction d1. In other words, the plate member 23 has a concave shape and a convex shape along the first direction d1. The plate member 23 preferably has two or more concave shapes and two or more convex shapes. The concave shape is the shape of the portion away from the extruded film 10 of the plate member 23 . The convex shape is the shape of the portion of the plate member 23 that is close to the film 10 that is pushed out. In the illustrated uneven shape 23a, the concave shape is a shape that is recessed toward the first side s5 in the second direction d2. A convex shape is a shape protruding to the second side s6 in the second direction d2. In the illustrated example, the uneven shape 23a is formed by combining plate-like portions. The uneven shape 23a may be formed by combining curved surfaces.

The plate member 23 has fixing means for fixing the film 10 along the uneven shape 23a. In the examples shown in FIGS. 2 and 4, the fixing means are suction holes 23b for sucking the film 10. FIG. When the plate member 23 is in contact with the film 10, air is sucked through the suction holes 23b by a pump (not shown) or the like, so that the plate member 23 can suck and fix the film 10 in the suction holes 23b. The suction holes 23b are, for example, circular with a diameter of 2 mm or more and 5 mm or less. Since the adsorption hole 23b is sufficiently large, the film 10 can be appropriately adsorbed and fixed. Since the suction holes 23b are not too large, it is possible to reduce the possibility of problems caused by foreign matter being sucked into the suction holes 23b. The plate member 23 may have any fixing means, not limited to the illustrated example.

The plate member 23 has a dimension smaller than that of the sheet 11 formed by cutting the film 10 in order to properly cut the film 10 into the sheet 11 in the unrolling direction of the roll of the film 10, that is, the first direction d1. have. The length of the plate member 23 along the direction in which the roll of the film 10 is delivered, that is, the first direction d1 may be, for example, 18 cm or more and 148 cm or less. On the other hand, the plate member 23 has dimensions larger than the sheet 11 formed by cutting the film 10 in order to properly deform the film 10 in the direction along the width of the roll. The length of the plate member 23 along the width of the roll of the film 10 may be, for example, 20 cm or more and 120 cm or less.

The plate member 23 is made of a material that is difficult to deform in order to properly deform the film 10 . Since the film 10 is held by the holding portion 31 while being heated by the heater 35 of the head 30, which will be described later, the plate member 23 is preferably made of a material that is resistant to thermal deformation. The plate member 23 is made of, for example, aluminum, stainless steel, galvanized iron plate, or the like.

The roller 25 moves while rotating along the uneven shape 23 a of the plate member 23 . Thereby, the roller 25 presses the film 10 against the plate member 23 . The roller 25 presses the film 10 against the plate member 23 from the second side s4 to the first side s3 in the first direction d1. The film 10 is deformed along the uneven shape 23 a of the plate member 23 by being pressed against the roller 25 . The roller 25 has, for example, a substantially cylindrical shape and may rotate around its central axis.

A cutting means 27 cuts the film 10 at a predetermined position to form a sheet 11 having a predetermined size. The cutting means 27 cuts the roll-shaped film 10 in a direction non-parallel to the unwinding direction on the second side s4 of the second clamp 22b in the first direction d1. When the first direction d1 is the vertical direction, the cutting means 27 cuts the vertically lower side of the film 10 in a direction non-parallel to the vertical direction, for example, in the horizontal direction. Thereby, the sheet 11 is formed on the upper side in the vertical direction. The cutting means 27 is, for example, a knife made of metal.

A sensor 28 detects the film 10 in the sheet feeding device 20 . Based on this detection, the film 10 can be placed in the sheet feeder 20 in the proper position and orientation. The sensor 28 may detect the length by which the film 10 is paid out in the first direction d1. In the example shown in FIG. 2 the sensor 28 is arranged on the same side as the plate member 23 . The same side as the plate member 23 is the side opposite to the side where the head 30 approaches to hold the sheet 11 in the sheet feeding device 20, in other words, the first side s5 of the clamp 22 in the second direction d2. . The sensor 28 detects the position, orientation, etc. of the film 10 through holes (not shown) provided in the plate member 23 . The sensor 28 may be arranged at any position, not limited to the illustrated example. The sensor 28 is, for example, an imaging device such as a camera.

As shown in FIG. 3, the film 10 is provided with alignment marks 10a. The sensor 28 can easily detect the position and orientation of the film 10 based on the alignment marks 10a. In the example shown in FIG. 3, the alignment mark 10a is a cross-shaped symbol provided on the film 10. As shown in FIG. The alignment mark 10a may have any shape, not limited to the illustrated example. Alignment mark 10 a may be part of the design provided on film 10 . In other words, the design provided on the film 10 may include the alignment mark 10a. The alignment mark 10a allows the film 10 to be placed in an appropriate position and orientation according to the design provided on the film 10. - 特許庁

The head 30 and the driving device 40 are shown schematically in FIG. Head 30 properly holds sheet 11 . Head 30 may hold molded article 13 . Head 30 is driven by drive device 40 . In the example shown in FIG. 4, the head 30 has a holding portion 31, a heater 35, and a second holding portion .

The holding section 31 receives the sheet 11 from the sheet feeding device 20 and holds the sheet 11 . The holding part 31 approaches the sheet feeding device 20 from the second side s6 in the second direction d2 in order to receive the sheet 11 from the sheet feeding device 20 . The head 30 is driven while the holding portion 31 holds the sheet 11 . The holding unit 31 passes the sheet 11 to a first mold 51 of the injection molding machine 50, which will be described later.

The holding portion 31 has a second uneven shape 31a. The second uneven shape 31 a fits with the uneven shape 23 a of the plate member 23 . Due to the second concave-convex shape 31a, the holding portion 31 can hold the sheet 11 deformed along the concave-convex shape 23a of the plate member 23 while maintaining the deformed shape.

The holding portion 31 has holding means for holding the sheet 11 along the second concave-convex shape 31a. In the example shown in FIG. 5, the holding means is the second suction holes 31b for sucking the sheet 11. As shown in FIG. When the holding portion 31 is in contact with the sheet 11, air is sucked from the second suction holes 31b by a pump (not shown) or the like, so that the holding portion 31 can suck and hold the sheet 11 in the second suction holes 31b. The second suction hole 31b has a circular shape with a diameter of 2 mm or more and 5 mm or less, for example. Since the second suction holes 31b are sufficiently large, the sheet 11 can be properly sucked and held. Since the second suction holes 31b are not too large, it is possible to reduce the possibility of problems caused by foreign matter being sucked into the second suction holes 31b. The holding part 31 may have any holding means, not limited to the illustrated example.

The holding portion 31 has dimensions smaller than the sheet 11 in order to hold the sheet 11 properly. The dimensions of the holding portion 31 may be, for example, 18 cm or more and 148 cm or less in length along one direction, and 15 cm or more and 100 cm or less in another direction perpendicular to the one direction.

The holding portion 31 is made of a material that is difficult to deform in order to hold the sheet 11 while maintaining its deformed shape. Since the sheet 11 held by the holding portion 31 is heated by the heater 35, the holding portion 31 is preferably made of a material that is resistant to thermal deformation. The holding portion 31 is made of, for example, aluminum or stainless steel. In order to protect the first mold 51, the holding portion 31 may be provided with a protective member such as a silicon pad on the surface thereof.

The heater 35 heats the sheet 11 held by the holding portion 31 . The heater 35 is provided near the holding portion 31 . In the example shown in FIG. 5, the heater 35 is provided on the opposite side of the holding portion 31 from the side on which the sheet 11 is held. In the illustrated example, the head 30 has a single heater 35 , but may have multiple heaters 35 . A plurality of heaters 35 may be combined, and the heaters 35 may be arranged along the second uneven shape 31 a of the holding portion 31 .

The heater 35 heats the sheet 11 held by the holding portion 31 to, for example, 100° C. or higher and 160° C. or lower. The heater 35 heats the sheet 11 for at least one period from when the holding section 31 receives the sheet 11 from the sheet supply device 20 until it passes the sheet 11 to the injection molding machine 50 . The heater 35 preferably has dimensions equal to or larger than the dimensions of the sheet 11 held by the holding part 31 so that the entire sheet 11 held by the holding part 31 can be uniformly heated. The positional relationship in the vertical direction between the sheet 11 held by the holding portion 31 and the heater 35 can be changed by, for example, rotationally driving the head 30 by the driving device 40 . When there is a portion where the distance between the heater 35 and the sheet 11 held by the holding portion 31 is relatively large, the temperature of the heater 35 is increased in the portion to uniformly heat the entire sheet 11. can. By covering the space between the sheet 11 held by the holding portion 31 and the heater 35 with an inorganic plate or the like from the side, the entire sheet 11 can be heated more uniformly.

The second holding part 36 receives the molded product 13 from a second mold 52 (described later) of the injection molding machine 50 and holds the molded product 13 . The head 30 is driven while the second holding portion 36 holds the molded product 13 . Second retainer 36 releases molded article 13 at collection position 90 .

The second holding portion 36 has a third uneven shape 36a. The third uneven shape 36 a fits with the uneven shape of the molded product 13 . The second holding portion 36 can appropriately hold the molded product 13 by the third uneven shape 36a.

The second holding portion 36 has holding means for holding the molded product 13 along the third concave-convex shape 36a. In the example shown in FIG. 5, the holding means are a plurality of suction pads 36b for sucking the molded product 13. In the example shown in FIG. By sucking air from the suction pad 36 b while the second holding portion 36 is in contact with the molded product 13 , the second holding portion 36 can suck and hold the molded product 13 on the suction pad 36 b. Not limited to the illustrated example, the second holding portion 36 may have any holding means.

The driving device 40 drives the head 30 so as to convey the sheet 11 held by the holding portion 31 of the head 30 from the sheet feeding device 20 to the injection molding machine 50 . The drive device 40 may drive the head 30 to transport the molded article 13 held by the second holding portion 36 of the head 30 from the injection molding machine 50 to the collection position 90 . The drive device 40 is, for example, a so-called multi-axis robot arm. Drive 40 is removably connected to head 30 . The head 30 connected to the drive 40 may be replaceable. By exchanging the head 30 , the shape of the holding portion 31 and the second holding portion 36 can be adjusted to the shape of the molded product 13 to be molded by the molding system 1 .

In the driving device 40, the holding portion 31 of the head 30 receives the sheet 11 from the sheet feeding device 20, transfers the sheet 11 from the holding portion 31 to the first mold 51 of the injection molding machine 50, and transfers the molded product 13 from the second mold 52. Head 30 is driven such that it is received by second holding portion 36 and conveys molded article 13 from second holding portion 36 to collection position 90 .

The injection molding machine 50 forms the molded product 13 by providing the molded part 12 on the sheet 11 while deforming the sheet 11 . The injection molding machine 50 accommodates the sheet 11 in the accommodation space, and provides the sheet 11 with the molded part 12 conforming to the shape of the accommodation space. Thereby, the molded product 13 is molded. The injection molding machine 50 has a first mold 51 and a second mold 52 . FIG. 6 shows a state in which the head 30 is driven to be positioned between the first die 51 and the second die 52 of the injection molding machine 50 . As shown in FIGS. 1 and 6, the first die 51 is located on the first side s1 in the flow direction dF and the second die 52 is located on the second side s2 in the flow direction dF. ing. After receiving the sheet 11 held by the holding portion 31 of the head 30 in the first mold 51 , the injection molding machine 50 transfers the molded product 13 to the second holding portion 36 of the head 30 in the second mold 52 . Alternatively, the sheet 11 held by the holding portion 31 of the head 30 is received by the first mold 51 , and the molded product 13 is transferred to the second holding portion 36 of the head 30 by the second mold 52 .

The first mold 51 receives the sheet 11 from the holding portion 31 . The first mold 51 has a shape mainly corresponding to the shape of the sheet 11 in the molded product 13 . The shape of the first die 51 is a shape that forms an appropriate accommodation space between itself and the second die 52 . The first mold 51 shapes the sheet 11 into the shape of the sheet 11 in the molded product 13 . The second uneven shape 31 a of the holding portion 31 has a shape that fits with the shape of the first mold 51 . Thereby, the first die 51 can receive the sheet 11 from the holding portion 31 while suppressing deformation such as stretching of the sheet 11 .

As shown in FIG. 1, the first die 51 is positioned between the sheet feeder 20 and the second die 52 in the machine direction dF. In other words, the sheet feeding device 20, the first die 51 and the second die 52 are arranged in this order in the flow direction dF.

The second mold 52 transfers the molded product 13 to the second holding portion 36 . The second mold 52 has a shape mainly corresponding to the shape formed by the molded part 12 in the molded product 13 . The shape of the second mold 52 is a shape that forms an appropriate accommodation space between the first mold 51 and the second mold 52 .

As shown in FIG. 1, the second die 52 is located between the first die 51 and the collection location 90 in the flow direction dF. In other words, the first die 51, the second die 52 and the collecting position 90 are arranged in this order along the flow direction dF. In this case, the head 30 handles the sheet 11 only on the first side s1 in the flow direction dF. can be performed smoothly. Since the head 30 will only handle the moldings 13 on the second side s2 in the flow direction dF, the second holding portion 36 of the head 30 receives the moldings 13 from the second mold 52 before releasing them at the collecting position 90. can be performed smoothly.

The second die 52 moves relative to the first die 51 in the flow direction dF to form an accommodation space together with the first die 51 . The first die 51 is fixed. In other words, the first die 51 does not move, and the holding portion 31 moves toward the first side s1 in the flow direction dF to approach the first die 51, thereby It is preferable to pass the sheet 11 over the mold 51 . When the first die 51 is fixed, movement of the first die 51 is less likely to cause unintended deformation of the sheet 11 before the molded part 12 is provided. The first die 51 is not fixed and may move to the second side s2 in the flow direction dF. Alternatively, both the first die 51 and the second die 52 may move in the flow direction dF.

The accommodation space formed between the first mold 51 and the second mold 52 has a shape corresponding to the molded product 13 molded by the injection molding machine 50 . The sheet 11 is shaped into a desired shape by drawing a vacuum from the side of the first die 51 . After a thermoplastic resin such as ABS, PC-ABS, acrylic, polycarbonate, polyethylene, or polypropylene heated to a high temperature is injected from the side of the second mold 52, the thermoplastic resin is cooled to perform molding. A part 12 is formed. A molded article 13 is molded by forming a molded part 12 on the shaped sheet 11 .

A collection position 90 is a position for collecting the molded article 13 that has been manufactured. The molded products 13 collected at the collecting position 90 are conveyed by, for example, a belt conveyor.

An example of a method for manufacturing the molded article 13 by the molding system 1 of the first embodiment will be described with reference to FIGS. 2 and 6 to 11. FIG.

As shown in FIG. 2, in the sheet feeding device 20, the roll-shaped film 10 is clamped by the first clamps 22a. The film 10 is fed from the first side s3 to the second side s4 in the first direction d1. The film 10 is tensioned from the first side in the first direction d1 by the pulling means 21 while being unwound in the first direction d1. When the first direction d1 is the vertical direction, the film 10 is fed from the bottom to the top in the vertical direction. Alignment marks 10 a of film 10 are detected by sensor 28 . Based on the detection of the alignment mark 10a by the sensor 28, the position, orientation and unwound size of the film 10 are determined.

Next, as shown in FIG. 7, the plate member 23 pushes the film 10 clamped by the first clamps 22a to the second side s6 in the second direction d2. Thereby, the film 10 is deformed according to the shape of the plate member 23 . Roller 25 then contacts film 10 . The roller 25 moves from the second side s4 to the first side s3 in the first direction d1 while being in contact with the film 10 . The roller 25 presses the film 10 against the plate member 23 along the uneven shape 23 a of the plate member 23 . As shown in FIG. 8, the film 10 deforms along the uneven shape 23a of the plate member 23. As shown in FIG. The film 10 is appropriately pulled out so as to keep the tension by the pulling means 21 constant when deforming along the uneven shape 23a.

Air is sucked from the suction holes 23b of the plate member 23 at the portion where the film 10 is deformed along the uneven shape 23a of the plate member 23, so that the plate member 23 sucks and fixes the film 10 at the suction holes 23b. In other words, the air is sucked from the suction holes 23b of the plate member 23 sequentially from the second side s4 to the first side s3 in the first direction d1 along the movement of the roller 25 .

Alternatively, a fixing claw (not shown) fixes the film 10 to the plate member 23 at the portion where the film 10 is deformed along the uneven shape 23 a of the plate member 23 . After the entire film 10 is deformed along the uneven shape 23a of the plate member 23, air is sucked from the suction holes 23b of the plate member 23, so that the plate member 23 sucks and fixes the film 10 at the suction holes 23b. . A fixed pawl releases the film 10 .

After that, the second clamp 22b clamps the first side s3 of the film 10 in the first direction d1.

Next, as shown in FIG. 9, the holding portion 31 of the head 30 approaches the sheet feeding device 20 from the second side s6 in the second direction d2. As shown in FIG. 10, the holding portion 31 contacts the film 10 . By sucking air from the second suction holes 31b of the holding portion 31, the holding portion 31 sucks and holds the film 10 at the second suction holes 31b. After that, the cutting means 27 cuts the first side s3 of the film 10 in the first direction d1 and the second side s4 of the second clamp 22b. The film 10 held by the holding portion 31 becomes the sheet 11 having a predetermined size. The suction of air from the suction holes 23b of the plate member 23 is stopped, and the plate member 23 stops fixing the film 10. - 特許庁Clamp 22 releases sheet 11 . Through the steps described above, the sheet 11 having a predetermined size is supplied from the sheet supply device 20 .

The sheet 11 supplied from the sheet supply device 20 is held by the holding portion 31 of the head 30 . The sheet 11 is smoothly held by the holding portion 31 through the above-described steps. The head 30 is driven by the driving device 40 and separated from the sheet feeding device 20 as shown in FIG. Head 30 moves from sheet feeder 20 to injection molding machine 50 . The sheet 11 held by the holding portion 31 is conveyed from the sheet supply device 20 to the injection molding machine 50 . The sheet 11 is heated by the heater 35 of the head 30 for at least one period from when it is held by the holding part 31 to when it is transferred to the injection molding machine 50 . It is preferable that the heater 35 heats the sheet 11 for a long time. Therefore, it is preferable that the sheet 11 is heated by the heater 35 over the entire period from being held by the holding portion 31 to being transferred to the injection molding machine 50 . The temperature of the heater 35 is determined according to the time for which the holding portion 31 holds the sheet 11 . For example, the longer the holding unit 31 holds the sheet 11, the lower the temperature of the heater 35 is. By driving the head 30 by the driving device 40, the positional relationship in the vertical direction between the sheet 11 held by the holding portion 31 and the heater 35 is adjusted. For example, when it is desired to heat the sheet 11 more, the positional relationship is changed such that the heater 35 is positioned below the sheet 11 in the vertical direction. The sheet 11 can be appropriately heated by adjusting the heating time of the heater 35 and the positional relationship between the heater 35 and the sheet 11 . As a result, the entire sheet 11 can be softened without causing problems such as blistering. By adjusting the positional relationship of the sheet 11 in the vertical direction, the heated and softened sheet 11 can be prevented from being deformed by the weight of the sheet 11 itself.

The head 30 holding the softened sheet 11 in the holding portion 31 is arranged between the first die 51 and the second die 52 of the injection molding machine 50 as shown in FIG. In the example shown in FIG. 6, the entire head 30 is arranged between the first die 51 and the second die 52 in the machine direction dF. The holding part 31 holding the sheet 11 faces the first mold 51, and the second holding part 36 for receiving the molded product 13 faces the second mold 52, respectively. In the example shown in FIG. 6, the holding part 31 faces the first side s1 in the flow direction dF and the second holding part 36 faces the second side s2 in the flow direction dF. After that, the head 30 approaches the first mold 51 and transfers the sheet 11 from the holding part 31 to the first mold 51 .

The head 30 leaves the injection molding machine 50 after transferring the sheet 11 to the first mold 51 . While the sheet 11 is placed on the first mold 51, the sheet 11 is shaped into the first mold 51 by vacuuming. After that, the second die 52 approaches the first die 51 . Thereby, an accommodation space is formed between the first die 51 and the second die 52 . By injecting a thermoplastic resin heated to a high temperature into the accommodation space, a molded part 12 having a shape corresponding to the accommodation space is provided on the sheet 11, and a molded product 13 is formed.

After that, the second mold 52 separates from the first mold 51 . The molded product 13 is placed in the second mold 52 and leaves the first mold 51 together with the second mold 52 . For example, part of the molded part 12 and the second mold 52 are engaged so that the molded product 13 is separated from the first mold 51 together with the second mold 52 . The head 30 is again placed between the first mold 51 and the second mold 52 of the injection molding machine 50 . As the second holding portion 36 of the head 30 approaches the second mold 52 , the molded product 13 is transferred to the second holding portion 36 . After receiving the molded product 13 , the second holding part 36 leaves the injection molding machine 50 .

The second holding part 36 holds the molded product 13 by sucking it. Head 30 is driven by drive 40 to transport molded article 13 to collection position 90 for release.

Through the above steps, the molded product 13 in which the molded part 12 is provided on the sheet 11 is manufactured and collected. By repeating this process, the molded product 13 can be manufactured continuously. In the process described above, after the sheet 11 held by the holding part 31 is transferred to the first mold 51 and before the head 30 is separated from the injection molding machine 50, the second holding part 36 receives the molded product 13 from the second mold 52. can be passed.

<Second Embodiment>
A molding system 1 and a sheet conveying system 3 according to the second embodiment will be described in detail. In the molding system 1 of the second embodiment, the components that can be configured in the same manner as the molding system 1 of the first embodiment described above are used for the corresponding parts in the first embodiment described above. The same reference numerals as those used in the previous section are used, and overlapping descriptions are omitted.

FIG. 12 shows a side view of the sheet feeding device 20 of the second embodiment. A sheet feeding device 20 according to the second embodiment has a pulling means 21 , a clamp 22 , a plate member 23 , an elastic member 26 , a cutting means 27 and a sensor 28 .

The plate member 23 pushes the film 10 to the second side s6 in the second direction d2, as in the first embodiment described above. In a second embodiment, plate member 23 includes a plurality of plate elements 24 . Each plate element 24 independently pushes the film 10 to the second side s6 in the second direction d2. At least some of the plate elements 24 are aligned in the first direction d1. Plate elements 24 may be arranged in two dimensions. In the example shown in FIG. 12, each plate element 24 has only one of concave shape 24a or convex shape 24b. In other words, the plate member 23 is divided into plate elements 24 for each concave shape 24a or convex shape 24b of the uneven shape 23a.

The elastic member 26 pushes the plate element 24 to the second side s6 in the second direction d2. A resilient member 26 is provided on each plate element 24 . The elastic member 26 may be, for example, a spring. The side of each elastic member 26 opposite to the side provided on the plate element 24 is fixed to a substrate or the like (not shown).

In the second embodiment, the plate member 23 may not have the suction holes 23b. The plate member 23 does not have to fix the film 10 .

An example of a method for manufacturing the molded article 13 by the molding system 1 of the second embodiment will be described with reference to FIGS. 12 to 17. FIG.

As in the first embodiment, in the sheet supply device 20, the roll-shaped film 10 is held between the first clamps 22a. The film 10 is fed from the first side s3 to the second side s4 in the first direction d1. The film 10 is tensioned from the first side in the first direction d1 by the pulling means 21 while being unwound in the first direction d1. Next, as shown in FIG. 12 , the holding portion 31 of the head 30 contacts the film 10 from the second side s6 in the second direction d2 without deforming the film 10 . The plate member 23 contacts the film 10 from the first side s5 in the second direction d2 without deforming the film 10 .

After that, as shown in FIGS. 13 to 17, among the plurality of plate elements 24, from the plate element 24 located on the second side s4 in the first direction d1 to the plate element 24 located on the first side s3 In turn, the elastic member 26 pushes the film 10 to the second side s6 in the second direction d2. The film 10 is sandwiched between each plate element 24 and the holding portion 31 . The film 10 deforms along the concave shape 24 a and the convex shape 24 b of the plate element 24 , that is, along the uneven shape 23 a of the plate member 23 . After that, the second clamp 22b clamps the first side s3 of the film 10 in the first direction d1.

By sucking air from the second suction holes 31b of the holding portion 31, the holding portion 31 sucks and holds the film 10 at the second suction holes 31b. After that, the cutting means 27 cuts the first side s3 of the film 10 in the first direction d1 and the second side s4 of the second clamp 22b. The film 10 held by the holding portion 31 becomes the sheet 11 having a predetermined size. Clamp 22 releases sheet 11 . Through the steps described above, the sheet 11 having a predetermined size is supplied from the sheet supply device 20 .

The sheet 11 supplied from the sheet supply device 20 is held by the holding portion 31 of the head 30 . As in the first embodiment, the molded part 12 is provided on the sheet 11 in the injection molding machine 50 to mold the molded product 13 . Molded articles 13 are transported to collection location 90 .

<Third Embodiment>
A molding system 1 and a sheet conveying system 3 according to the third embodiment will be described in detail. In the molding system 1 of the third embodiment, the components that can be configured in the same manner as the molding system 1 of the first embodiment described above are used for the corresponding parts in the first embodiment described above. The same reference numerals as those used in the previous section are used, and overlapping descriptions are omitted.

FIG. 18 shows the sheet feeding device 20 and head 30 of the third embodiment. A sheet feeding device 20 according to the third embodiment has a pulling means 21 , a clamp 22 , a plate member 23 , a cutting means 27 and a sensor 28 . A head 30 according to the third embodiment has a holding portion 31 , a second elastic member 33 and a heater 35 . Although omitted in FIG. 18, the head 30 of the third embodiment further has a second holding portion 36, like the head 30 of the first embodiment shown in FIG.

The holding portion 31 of the head 30 receives the sheet 11 from the sheet feeding device 20 and holds the sheet 11, as in the first embodiment described above. The holding part 31 approaches the sheet feeding device 20 from the second side s6 in the second direction d2 in order to receive the sheet 11 from the sheet feeding device 20 . In a third embodiment, the holding part 31 comprises a plurality of holding elements 32. As shown in FIG. Each retaining element 32 independently retains the film 10 on the first side s5 in the second direction d2. Each holding element 32 has a second suction hole 31b. At least a portion of the retaining elements 32 are aligned in the first direction d1. The retaining elements 32 may be arranged in two dimensions. In the example shown in Figure 18, each retaining element 32 has only one of the second concave shape 32a or the second convex shape 32b. In other words, the holding portion 31 is divided into holding elements 32 for each of the second concave shapes 32a or the second convex shapes 32b of the second uneven shapes 31a.

The second elastic member 33 pushes the retaining element 32 to the first side s5 in the second direction d2. A second elastic member 33 is provided on each retaining element 32 . The second elastic member 33 may be, for example, a spring. The side of each second elastic member 33 opposite to the side provided on the holding element 32 is fixed to a substrate or the like. As in the illustrated example, the side of each second elastic member 33 opposite to the side provided on the holding element 32 may be fixed to the heater 35 . The second elastic member 33 may be fixed to the heater 35 via a heat insulating member. The heat insulating member protects the second elastic member 33 from the heat of the heater 35, thereby suppressing deterioration of the second elastic member 33 due to heat.

In the third embodiment, the plate member 23 may not have the suction holes 23b. The plate member 23 does not have to fix the film 10 .

An example of a method for manufacturing the molded article 13 by the molding system 1 of the third embodiment will be described with reference to FIGS. 18 to 23. FIG.

As in the first embodiment, in the sheet supply device 20, the roll-shaped film 10 is held between the first clamps 22a. The film 10 is fed from the first side s3 to the second side s4 in the first direction d1. The film 10 is tensioned from the first side in the first direction d1 by the pulling means 21 while being unwound in the first direction d1. Next, as shown in FIG. 18, the plate member 23 contacts the film 10 from the first side s5 in the second direction d2 without deforming the film 10. As shown in FIG. The holding portion 31 of the head 30 contacts the film 10 from the second side s6 in the second direction d2 without deforming the film 10 .

After that, as shown in FIGS. 19 to 23, among the plurality of holding elements 32, from the holding element 32 positioned on the second side s4 in the first direction d1 to the holding element 32 positioned on the first side s5 In turn, the second elastic member 33 holds the film 10 on the second side s6 in the second direction d2. The film 10 is sandwiched between each holding element 32 and the plate member 23 . Along the second concave shape 32 a and the second convex shape 32 b of the holding element 32 , ie along the second uneven shape 31 a of the holding part 31 , the film 10 is deformed. The second uneven shape 31 a of the holding portion 31 fits with the uneven shape 23 a of the plate member 23 . The film 10 also deforms along the uneven shape 23 a of the plate member 23 . After that, the second clamp 22b clamps the first side s3 of the film 10 in the first direction d1.

By sucking air from the second suction holes 31b of the holding portion 31, the holding portion 31 sucks and holds the film 10 at the second suction holes 31b. After that, the cutting means 27 cuts the first side s3 of the film 10 in the first direction d1 and the second side s4 of the second clamp 22b. The film 10 held by the holding portion 31 becomes the sheet 11 having a predetermined size. Clamp 22 releases sheet 11 . Through the steps described above, the sheet 11 having a predetermined size is supplied from the sheet supply device 20 .

The sheet 11 supplied from the sheet supply device 20 is held by the holding portion 31 of the head 30 . As in the first embodiment, the molded part 12 is provided on the sheet 11 in the injection molding machine 50 to mold the molded product 13 . Molded articles 13 are transported to collection location 90 .

For example, when providing a plurality of molded parts on one sheet, the mold of the injection molding machine may have a complicated shape. If the mold of the injection molding machine has a complicated shape, the sheet may be stretched and deformed depending on the shape of the mold when the sheet is transferred from the holding portion of the head to the mold. By making the shape of the holding portion fit into the mold of the injection molding machine, deformation of the sheet when passing the sheet from the holding portion to the mold can be suppressed. If the holding portion has a complicated shape that fits into a mold with a complicated shape, the shape of the holding portion may cause the sheet to be stretched and deformed when the sheet is held by the holding portion. In particular, if the sheet is deformed when it is held by the holding portion, the sheet is heated by the heater of the head, and the deformation of the sheet is more likely to be extended. When the sheet is stretched and deformed, the design provided on the sheet is also stretched. As a result, a molded product with an unintended design may be molded.

The sheet feeding device 20 of the first embodiment has rollers 25 . The roller 25 presses the film 10 against the plate member 23 along the uneven shape 23 a of the plate member 23 . By being pressed against the plate member 23 by the roller 25, the film 10 is deformed along the uneven shape 23a. When the film 10 is deformed along the concave-convex shape 23a, in other words, while the roller 25 presses the film 10 against the plate member 23, the film 10 is appropriately pulled out so that the tension by the pulling means 21 is kept constant. Therefore, the film 10 forming the sheet 11 is difficult to stretch when deformed along the uneven shape 23a. In other words, when the film 10 forming the sheet 11 is deformed, the elongation of the film 10 can be suppressed. The design provided on the sheet 11 is difficult to stretch. The design intended for the molded product 13 is easily provided.

The roller 25 presses the film 10 against the plate member 23 from the second side s4 to the first side s3 in the first direction d1. A tensioning means 21 applies tension to the film 10 from the first side s3 in the first direction d1. Since the roller 25 is moved toward the side to which the tension is applied, the film 10 is easily pulled out from the portion where the film 10 is deformed. When the film 10 forming the sheet 11 is deformed, the elongation of the film 10 can be suppressed.

The plate member 23 has two or more concave shapes and convex shapes. When the film 10 is pushed out onto the plate member 23 having a complex shape with many irregularities, the sheet 11 is likely to be stretched when held by the holding portion 31 . When the plate member 23 has two or more concave shapes and convex shapes, pressing the film 10 against the plate member 23 with the roller 25 can particularly effectively suppress elongation of the film 10 when the film 10 is deformed. .

In the sheet feeding device 20 of the second embodiment, the plate member 23 includes a plurality of plate elements 24 that independently push out the film 10 in the second direction d2. Film 10 is sandwiched between plate element 24 and holding portion 31 . The film 10 deforms along the concave shape 24 a and the convex shape 24 b of the plate element 24 , that is, along the uneven shape 23 a of the plate member 23 . When the film 10 deforms along the concave-convex shape 23a, in other words when each plate element 24 pushes the film 10, the film 10 is pulled out accordingly so as to keep the tension by the pulling means 21 constant. Therefore, the film 10 forming the sheet 11 is difficult to stretch when deformed along the uneven shape 23a. In other words, when the film 10 forming the sheet 11 is deformed, the elongation of the film 10 can be suppressed. The design provided on the sheet 11 is difficult to stretch. The design intended for the molded product 13 is easily provided.

At least some of the plurality of plate elements 24 are aligned in the first direction d1. The tension means 21 apply tension to the film 10 from the first side s3 in the first direction d1. Since the plurality of plate elements 24 are arranged on the side to which tension is applied, when each plate element 24 pushes out the film 10, the film 10 is easily pulled out to the portion where the film 10 is deformed. When the film 10 forming the sheet 11 is deformed, the elongation of the film 10 can be suppressed.

The plurality of plate elements 24 of the plate member 23 push out the film 10 in the second direction d2 in order from the plate element 24 positioned on the second side s4 in the first direction d1 to the plate element 24 positioned on the first side s3. . Since each plate element 24 pushes the film 10 in turn toward the tensioning side, the film 10 tends to be pulled out against the portion where the film 10 deforms. When the film 10 forming the sheet 11 is deformed, the elongation of the film 10 can be suppressed.

The sheet feeding device 20 has a plurality of elastic members 26 provided on the plate element 24 . The elastic member 26 allows the plate element 24 to be properly pushed out. Deformation of the film 10 due to extrusion with excessive force is suppressed.

If a plate element has both concave and convex shapes, the film will be pulled between the convex shape of the plate element and the convex shape of the plate element adjacent to it. This results in stretching of the film between the convex shape of the plate element and the convex shape of the adjacent plate element. Preferably, each plate element 24 has only one of the concave shape 24a or the convex shape 24b in order to limit stretching of the film 10. As shown in FIG.

The uneven shape 23a is formed along the first direction d1. The tension means 21 apply tension to the film 10 from the first side s3 in the first direction d1. In the sheet feeding device 20 of the embodiment described above, when the film 10 is deformed along the concave-convex shape 23a, the film 10 is easily pulled out so that the tension by the pulling means 21 is kept constant. Therefore, the film 10 forming the sheet 11 is more difficult to stretch when deformed along the uneven shape 23a.

The first direction d1 is the vertical direction, and the cutting means 27 cuts the lower side of the film 10 in the vertical direction. When the film 10 is cut by the cutting means 27, it is possible to suppress the adhesion of the cutting residue of the film 10 to the sheet 11.例文帳に追加As a result, it is possible to prevent the molded product 13 from having defects in appearance such as dents and swelling due to cutting residue or the like.

The plate member 23 has suction holes 23b for sucking the film 10 thereon. The plate member 23 can easily fix the film 10 by sucking air from the suction holes 23b. The fixing of the film 10 by the suction holes 23b is preferable because it does not prevent the holding portion 31 of the head 30 from holding the sheet 11 from the sheet feeding device 20 .

In the sheet conveying system 3 of the third embodiment, the holding section 31 includes a plurality of holding elements 32 that hold the sheets 11 independently. Film 10 is clamped between plate member 23 and holding element 32 . The film 10 is deformed along the uneven shape 23 a of the plate member 23 . In order to keep the tension by the pulling means 21 constant when the film 10 is deformed along the uneven shape 23a, in other words when each holding element 32 pushes the film 10 by the second elastic member 33 or the like, the film 10 is: pulled out as appropriate. Therefore, the film 10 forming the sheet 11 is difficult to stretch when deformed along the uneven shape 23a. In other words, when the film 10 forming the sheet 11 is deformed, the elongation of the film 10 can be suppressed. The design provided on the sheet 11 is difficult to stretch. The design intended for the molded product 13 is easily provided.

At least a portion of the retaining elements 32 are aligned in the first direction d1. The tension means 21 apply tension to the film 10 from the first side s3 in the first direction d1. Since a plurality of holding elements 32 are arranged on the tensioning side, when each holding element 32 pushes out the film 10 by the second elastic member 33, the film 10 is pulled out to the portion where the film 10 is deformed. Cheap. When the film 10 forming the sheet 11 is deformed, the elongation of the film 10 can be suppressed.

The holding elements 32 of the holding portion 31 hold the film 10 in order from the holding element 32 positioned on the second side s4 in the first direction d1 to the holding element 32 positioned on the first side s3. Since each holding element 32 holds the film 10 in turn toward the tensioning side, the film 10 tends to be pulled out against the portion where the film 10 deforms. When the film 10 forming the sheet 11 is deformed, the elongation of the film 10 can be suppressed.

The head 30 has a plurality of second elastic members 33 provided on each holding element 32 . The second elastic member 33 allows the holding element 32 to be properly pushed out. Deformation of the film 10 due to extrusion with excessive force is suppressed.

If a retaining element has both a concave and a convex shape, the film will be pulled between the convex shape of the retaining element and the convex shape of the retaining element adjacent to it. This results in stretching of the film between the convex shape of the retaining element and the convex shape of the adjacent retaining element. Preferably, each retaining element 32 has only one of the second concave shape 32a or the second convex shape 32b in order to limit stretching of the film 10. As shown in FIG.

The holding portion 31 has a second uneven shape 31 a that fits with the uneven shape 23 a of the plate member 23 . When the holding portion 31 of the head 30 holds the sheet 11 from the sheet feeding device 20 , the sheet 11 is difficult to move between the plate member 23 and the holding portion 31 . Therefore, the deformation of the sheet 11 from the shape along the concave-convex shape 23a is suppressed.

The holding portion 31 has a second suction hole 31b for sucking the sheet 11 . The holding portion 31 can easily hold the film 10 by sucking air from the second suction holes 31b.

The head 30 has a heater 35 that heats the sheet 11 held by the holding portion 31 . The heater 35 can heat the sheet 11 while the sheet 11 is held by the holding portion 31 and conveyed. Thereby, the sheet 11 is softened by the time the sheet 11 is transferred to the injection molding machine 50 . The time for heating and softening the sheet 11 in the injection molding machine 50 can be omitted. The efficiency of molding the molded product 13 and, in turn, the production efficiency of the molded product 13 can be improved. Heating the sheet 11 by the heater 35 while the sheet 11 is held by the holding unit 31 and being conveyed can sufficiently lengthen the time for heating the sheet 11 . Since there is no need to rapidly heat the sheet 11 in order to shorten the entire process of manufacturing the molded product 13 in the molding system 1, problems such as blistering on the sheet 11 due to rapid heating of the sheet 11 are less likely to occur. .

As described above, the sheet feeding device 20 of the first embodiment is a sheet feeding device that feeds the sheet 11, and includes the pulling means 21 that applies tension to the film 10 from the first side s3 in the first direction d1. , a plate member 23 having an uneven shape 23a and pushing out the film 10 in a second direction d2 non-parallel to the first direction d1; a roller 25 pressing the film 10 against the plate member 23 along the uneven shape 23a; and a cutting means 27 for cutting 10 . According to such a sheet supply device 20, while the roller 25 presses the film 10 against the plate member 23, the film 10 is pulled out appropriately so that the tension by the pulling means 21 is kept constant. Therefore, it is possible to suppress elongation of the film 10 when the film 10 forming the sheet 11 is deformed.

A sheet feeding device 20 of the second embodiment is a sheet feeding device that feeds a sheet 11, and includes a pulling means 21 that applies tension to the film 10 from a first side s3 in a first direction d1, and an uneven shape 23a. and a plate member 23 for pushing the film 10 in a second direction d2 non-parallel to the first direction d1; It includes a plurality of plate elements 24 which extrude the film 10 into. According to the sheet feeder 20 as described above, the film 10 is pulled out appropriately so that the tension by the pulling means 21 is kept constant when each plate element 24 pushes out the film 10 . Therefore, it is possible to suppress elongation of the film 10 when the film 10 forming the sheet 11 is deformed.

The sheet conveying system 3 of the third embodiment has a sheet feeding device 20 that feeds the sheet 11 , a head 30 that has a holding portion 31 that holds the sheet 11 , and a driving device 40 that drives the head 30 . However, the holding portion 31 includes a plurality of holding elements 32 that hold the sheets 11 independently. According to the sheet conveying system 3 as described above, the film 10 is appropriately pulled out so that the tension by the pulling means 21 is kept constant when each holding element 32 pushes out the film 10 by the second elastic member 33 or the like. Therefore, it is possible to suppress elongation of the film 10 when the film 10 forming the sheet 11 is deformed.

Aspects of the present invention are not limited to the above-described embodiments, but include various modifications that can be conceived by those skilled in the art, and the effects of the present invention are not limited to the above-described embodiments. . That is, various additions, changes, and partial deletions are possible without departing from the conceptual idea and spirit of the present invention derived from the content defined in the claims and equivalents thereof.

1 Molding System 3 Sheet Conveying System 5 Clean Booth 10 Film 10a Alignment Mark 11 Sheet 12 Molded Part 13 Molded Product 20 Sheet Feeding Device 21 Pulling Means 22 Clamp 22a First Clamp 22b Second Clamp 23 Plate Member 23a Concavo-convex Shape 23b Suction Hole 24 Plate element 24a Concave shape 24b Convex shape 25 Roller 26 Elastic member 27 Cutting means 28 Sensor 30 Head 31 Holding part 31a Second uneven shape 31b Second suction hole 32 Holding element 32a Second concave shape 32b Second convex shape 33 Second elasticity Member 35 Heater 36 Second holding part 40 Driving device 50 Injection molding machine 51 First mold 52 Second mold 90 Collection position

Claims (22)

A sheet feeding device for feeding a sheet,
tensioning means for applying tension to the film from a first side in a first direction;
a plate member having an uneven shape and pushing out the film in a second direction non-parallel to the first direction;
a roller that presses the film against the plate member along the uneven shape;
and cutting means for cutting the film. The sheet feeding device according to claim 1, wherein the roller presses the film against the plate member from the second side to the first side in the first direction. 3. The sheet feeding device according to claim 1, wherein said plate member has two or more concave shapes and two or more convex shapes. A sheet feeding device for feeding a sheet,
tensioning means for applying tension to the film from a first side in a first direction;
a plate member having an uneven shape and pushing out the film in a second direction non-parallel to the first direction;
and a cutting means for cutting the film,
The sheet feeding device, wherein the plate member includes a plurality of plate elements that independently push the film in the second direction. 5. The sheet feeding apparatus according to claim 4, wherein at least some of said plurality of plate elements are aligned in said first direction. 6. The sheet feeding device according to claim 4, further comprising a plurality of elastic members provided on said plate element. 7. A sheet feeder according to any one of claims 4 to 6, wherein each plate element has only one of concave or convex shape. The sheet feeding device according to any one of claims 1 to 6, wherein the uneven shape is formed along the first direction. the first direction is a vertical direction;
The sheet feeding device according to any one of claims 1 to 8, wherein the cutting means cuts the lower side of the film in the vertical direction. The sheet feeding device according to any one of claims 1 to 9, wherein the plate member has suction holes for sucking the film. A sheet feeding device according to any one of claims 1 to 10;
a head having a holding portion that holds the sheet;
a driving device for driving the head,
The sheet conveying system, wherein the holding portion has a second concave-convex shape that fits with the concave-convex shape of the plate member. a sheet feeding device for feeding a sheet;
a head having a holding portion that holds the sheet;
a driving device for driving the head,
The sheet conveying system, wherein the holding section includes a plurality of holding elements that independently hold the sheet. The sheet feeder has tensioning means for applying tension to the film from a first side in a first direction,
13. The sheet transport system of claim 12, wherein at least some of said retaining elements are aligned in said first direction. 14. The sheet conveying system according to claim 12 or 13, wherein said head further comprises a plurality of second elastic members provided on each holding element. The sheet feeding device has a plate member having an uneven shape,
The sheet conveying system according to any one of claims 12 to 14, wherein the holding portion has a second concave-convex shape that fits with the concave-convex shape of the plate member. 16. The sheet transport system of claim 15, wherein each retaining element has only one of the second concave shape or the second convex shape. The sheet conveying system according to any one of claims 11 to 16, wherein the holding section has a second suction hole for sucking the sheet. 18. The sheet conveying system according to claim 11, wherein said head further includes a heater for heating said sheet held by said holding portion. A sheet conveying system according to any one of claims 11 to 18;
and an injection molding machine that molds a molded product in a storage space that stores the sheet. applying tension to the film from a first side in a first direction;
extruding the film in a second direction non-parallel to the first direction by a plate member;
moving a roller from the second side to the first side in the first direction to press the film against the plate member along the uneven shape of the plate member;
and cutting the film into sheets. applying tension to the film from a first side in a first direction;
extruding the film in a second direction non-parallel to the first direction by a plate member;
and cutting the film into sheets,
In the step of extruding the film by the plate member, the plurality of plate elements possessed by the plate member are arranged in order from the plate element positioned on the second side in the first direction to the plate element positioned on the first side. A method of feeding a sheet comprising extruding said film in a direction. tensioning the film from a first side in a first direction;
extruding the film in a second direction non-parallel to the first direction by a plate member;
a holding portion holding the film;
cutting the film into sheets;
and a step of driving a head having the holding portion,
In the step of holding the film by the holding portion, holding elements of the holding portion are arranged in order from the holding element located on the second side in the first direction to the holding element located on the first side. A method of conveying a sheet, comprising the step of holding a

Images