JP4793344B2 - Material supply apparatus and laminate manufacturing apparatus using the same - Google Patents

Description

  The present invention relates to a material supply apparatus and a laminate manufacturing apparatus using the material supply apparatus.

  Conventionally, as a laminated plate manufacturing apparatus, a plurality of rolls each wound with a plurality of sheet materials and a plurality of sheet materials unwound from the plurality of rolls are laminated and thermally bonded to each other while being passed in a laminated state. And a product winding device that winds the laminated plate from the hot pressing machine (see, for example, Patent Document 1).

  For this reason, in a material supply apparatus for supplying a plurality of sheet materials to a heat press machine, at least the number of roll support portions for supporting each roll is required, so that the plurality of roll support portions do not interfere with each other. Therefore, the material supply device is increased in size.

If a plurality of roll support portions are arranged without increasing the size of the material supply device, the plurality of roll support portions are close to each other. Work to insert into the press becomes difficult.
JP-A-5-42555 Japanese Patent Laid-Open No. 9-1590

  Therefore, the present applicant forms a roll by winding it in a roll state in a state in which a plurality of sheet materials are laminated, and the laminated roll is mounted on the laminated roll support part. I came up with a way to pull out.

  According to this method, since a plurality of roll support portions can be combined as one laminated roll support portion, the apparatus can be greatly reduced in size. However, when the sheet material is unwound from such a laminating roll, the amount of unwinding increases as the outer sheet material increases due to the circumferential length difference of each sheet material. There is a risk that wrinkles and creases may be formed when the layers are heat pressed.

  Therefore, it is conceivable to provide a dancer roll mechanism or the like in order to absorb the circumference difference. For example, Patent Document 2 discloses an example of a dancer roll mechanism as travel distance correction means. The dancer roll mechanism includes a pair of fixed rolls having a rotation axis fixed thereto, and a dancer roll provided between the pair of fixed rolls and having the rotation axis movable relative to the fixed roll. . When such a dancer roll mechanism is used, in addition to the laminated roll support part, a dancer roll support part is required for each of a plurality of sheets, and the laminated roll support part and the dancer roll mechanism support part interfere with each other. Otherwise, the material supply device becomes larger and the overall size of the device cannot be avoided.

  An object of this invention is to provide the manufacturing apparatus of the laminated board which can avoid the enlargement of an apparatus, and the material supply apparatus used for this.

  A laminate manufacturing apparatus and a material supply device according to the present invention include a circumference difference absorbing mechanism that is attached to a core of a laminate roll and absorbs a circumference difference of a plurality of sheet materials of the laminate roll, and the circumference difference The absorption mechanism includes one or more guide rolls for guiding the sheet material drawn from the laminated roll in the drawing direction, and the sheet material that has passed through the guide roll is pressed against the sheet material from the opposite side of the guide roll and is in tension. And one or more tension-applying rolls that provide the above.

  ADVANTAGE OF THE INVENTION According to this invention, when the some sheet material is pulled out from a lamination | stacking roll, the circumference difference which arises between these some sheet materials can be absorbed by the circumference difference absorption mechanism.

  In addition, since this circumferential length difference absorbing mechanism can be arranged at a position shifted in the axial direction of the laminated roll with respect to the laminated roll supporting part that supports the core of the laminated roll, a plurality of laminated roll support parts are arranged close to each other. In addition, the circumferential length difference absorbing mechanism does not interfere with these laminated roll support portions, and an increase in the size of the material supply device can be avoided.

  Moreover, since the circumference difference absorption mechanism is configured to include a guide roll and a tension-adding roll, there is an advantage that an amount capable of absorbing the circumference difference is increased as compared with a structure without a guide roll.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
The manufacturing apparatus of the laminated board of 1st Embodiment is demonstrated referring FIGS.

"Outline of laminated board manufacturing equipment"
First, the overall structure of the laminate manufacturing apparatus 10 of the present embodiment will be schematically described. As shown in FIG. 2, the laminated board manufacturing apparatus 10 of the present embodiment is configured to include a material supply apparatus 12, a double belt press apparatus 13 as a heat press machine, and a product winding apparatus 14. Yes.

  The material supply device 12 unwinds the multilayer workpiece 8 (a laminate of a plurality of sheet materials 4a, 4b, and 4c) from each lamination roll 5 and supplies it to the workpiece supply port of the double belt press device 13. The belt press device 13 is constituted by a known double belt press device, and a plurality of sheet materials 4a, 4b, 4c constituting the multilayer work 8 are formed by thermocompression bonding while allowing the multilayer work 8 from the material supply device 12 to pass through. Are laminated to form a laminated plate 9, and the laminated plate 9 thus laminated and formed by the double belt press device 13 is wound up by the product winding device 14.

  In addition, the manufacturing method of the lamination | stacking roll 5 is performed by winding up to the core 6 in the roll shape in the state which laminated | stacked the several elongate sheet material 4a, 4b, 4c as shown in FIG. As shown in FIG. 1, a laminating roll manufacturing apparatus 1 for manufacturing the laminating roll 5 includes single-layer rolls 3a, 3b, and 3c in which the sheet materials 4a, 4b, and 4c are separately wound into rolls. Single-layer roll support portions 2a, 2b, 2c to be pivotally supported, and multi-layer roll support portions 7 that support the core 6 for winding in a state in which the sheet materials 4a, 4b, 4c from the single-layer rolls are laminated, As a main component. In this example, the plurality of sheet materials 4a, 4b, and 4c are three, and are composed of a copper foil 4a, a polyimide film 4b, and a copper foil 4c. Therefore, the laminated board 9 manufactured with the manufacturing apparatus 10 shown in FIG. 2 becomes a double-sided copper foil laminated board (laminate sheet) by which both surfaces of the polyimide film 4b become the copper foil layers 4a and 4c. In addition, when the sheet materials 4a, 4b, and 4c are the above-described materials, the thermocompression treatment by the double belt press device 13 is performed at a pressure of 20 to 80 [bar], a temperature of 180 to 400 [° C], and a time of 1 to 10 [min]. It is desirable to perform within the range.

"Material supply device"
Next, the material supply device 12 will be described in more detail.

  As shown in FIGS. 2 and 4, the material supply device 12 includes laminated roll support portions 21 and 23 that rotatably support the core 6 of the laminated roll 5. Laminating roll support portions 21 and 23 are provided on both axial ends of the core 6, and the laminating roll support portion 21 on one axial end side is laminated on the mounting wall 20 erected vertically from the floor surface. Embedded in each roll 5, the laminated roll support portion 23 on the other end side in the axial direction is formed in a columnar shape erected vertically from the floor surface or ceiling for each laminated roll 5.

  The laminated roll support portions 21 and 23 pivotally support the winding core 6 of the laminated roll 5 via the rotating shaft 25. That is, the core 6 of the laminated roll 5 is formed in a hollow shape (cylindrical in this example), and the rotating shaft 25 penetrating through the inside of the core 6 is supported by the laminated roll support portions 21 and 23. The rotary shaft 25 has a stopper (not shown) that protrudes and protrudes in the radial direction so as to engage with the inner peripheral surface of the core 6, and the rotary shaft 25 and the core 6 are projected when the stopper projects in the radial direction. And the rotating shaft 25 and the winding core 6 rotate integrally.

  At least one of the laminating roll support portions 21 and 23 has a built-in brake means (not shown) for applying a brake against the winding of the laminated plate 9 by the product winding device 14. 8 is put into the double belt press device 13 in a stretched state.

  However, since the multilayer workpiece 8 is formed of a plurality of sheet materials 4a, 4b, and 4c (thickness t1, t2, and t3), the outer sheet material 4c is an intermediate sheet when unrolled from the laminated roll 5. The material 4b is also unwound longer by 2π × (t2) / 2 per turn, and the inner sheet material 4a is unwound longer by 2π × (t2 + t3) / 2 per turn.

  Therefore, when the multilayer workpiece 8 is inserted into the double belt press device 13, the sheet material 4a, 4b, 4c is not accurately laminated at the workpiece insertion port of the double belt press device 13, and wrinkles or the like are generated. May cause molding defects. Therefore, in order to prevent such a problem from occurring, the material supply device 12 of the present embodiment is configured to include a circumferential length difference absorption mechanism 30.

"Circumferential length absorption mechanism"
Next, the circumference difference absorbing mechanism 30 will be described with reference to FIGS.

  The circumferential length difference absorbing mechanism 30 absorbs the circumferential length differences of the plurality of sheet materials 4 a, 4 b, 4 c of the laminated roll 5. The circumferential difference absorbing mechanism 30 of this embodiment is attached to the core 6 of the laminated roll 5. More specifically, the configuration is as follows.

  In the circumferential length difference absorbing mechanism 30 of this embodiment, as shown in FIGS. 4 to 10, a pair of opposed plate-like attachments suspended via bearings 39 on both axial ends of the core 6 of the laminated roll 5. A base 35 is provided. A pair of support arms 31 and a pair of support arms 32 are supported on the pair of opposed mounting bases 35 in such a manner that guide rolls 36 and 37 are suspended so as to be parallel to the core 6. It is pivotally attached. Both ends in the axial direction are pivotally supported on the rotation free ends of the pair of support arms in a state where the tension applying rolls 32 and 34 are installed so as to be parallel to the core 6.

  The guide rolls 36 and 37 are for guiding the sheet materials 4b and 4c drawn from the laminated roll 5 in the drawing direction. Further, the tension applying rolls 32 and 34 apply tension to the sheet material 4b and 4c that have passed through the guide rolls 36 and 37 by pressing from the side opposite to the guide rolls 36 and 37, respectively. Here, the number of the guide rolls 36, 37 and the tension applying rolls 32, 34 may be the same as the number of the sheet materials 4a, 4b, 4c. In this example, the guide rolls 36, 37 and the tension applying rolls are used. 32, 34 are provided for each of the sheet materials 4b, 4c except for the innermost sheet material 4a among the plurality of sheet materials 4a, 4b, 4c, and the innermost sheet material 4a is a guide roll and tension. Since the product take-up device 14 is wound through the double belt press device 13 without passing through the additional roll, the number of the guide rolls 36 and 37 and the tension applying rolls 32 and 34 is the sheet material 4a, 4b, 4c. It is one less than the number of sheets. In other words, in this example, the number of sheet materials of the multilayer workpiece 8 is two, and the guide rolls 36 and 37 and the tension applying rolls 32 and 34 are two, which is one less.

  The mounting base 35 is kept in a fixed posture with respect to the rotating core 6 by its own weight, or is engaged with a floor surface, a laminated roll support portion, or other fixed points. It is kept constant (it is not rotated by being caught by the rotating core 6).

  The support arms 31 and 33 are urged by the urging means so that the support arms 31 and 33 rotate in the direction in which the tension applying rolls 32 and 34 are pressed against the sheet materials 4b and 4c. The urging means of this embodiment has a structure in which the wires 43 and 45 connected to the support arms 31 and 33 are pulled by a slider 42 that is driven by the electric motor 41. In the present invention, the urging means can be realized in various forms such as a spring member and an air cylinder. In the present invention, the tension applying rolls 32 and 34 are pressed against the sheet materials 4b and 4c by the weights of the tension applying rolls 32 and 34 and the support arms 31 and 33 without providing the urging means. good.

  By such a circumferential length difference absorbing mechanism 30, the unwinding length between the plurality of sheet materials 4a, 4b, 4c put into the double belt press device 13 is absorbed. Specifically, as shown in FIG. 8 → FIG. 9 → FIG. 10, as the multilayer work 8 is unwound from the laminating roll 5, the outer sheet material becomes more slack so that it is supported to absorb this. The arms 31 and 33 are rotated. Thereby, it is prevented that wrinkles generate | occur | produce in the laminated board 9 manufactured.

  Here, in the circumferential length difference absorbing mechanism 30 of the present embodiment, as shown in FIGS. 5 to 7, the mounting base 35 is configured to be detachable from both axial ends of the core 6. More specifically, the attachment base 35 is formed with a fixing portion 51 for fixing the bearing units 38 attached to both axial ends of the core 6 so as to be detachable from the radial direction.

  The bearing unit 38 includes at least a bearing 39. In this embodiment, the bearing 39 is press-fitted and fixed to both axial ends of the core 6, and a plate-like shape fixed to the outer peripheral side of the bearing 39. The bearing base 40 is configured.

  Further, the bearing unit 38 and the fixed portion 51 have a fitting structure, and the bearing unit 38 is fitted into the fixed portion 51. The fixing portion 51 of the mounting base 35 is opened to the periphery of the mounting base 35 through a notch 53, and the bearing unit 38 can be inserted from the radial direction through the notch 53 as shown in FIGS. It is like that. The notch 53 is closed by a lid 55 as shown in FIG. The lid 55 is fixed to the mounting base body with the notch 53 closed by two clamps 57 and 57. The lid portion 55 in a state where the cutout portion 53 is closed presses the bearing unit 38 against the inner peripheral surface of the fixed portion 51. An elastic member 64 (20 mm thick urethane in this example) is attached to the inner surface of the lid portion 55, and the elastic restoring force of the elastic member 64 is closed by closing the lid portion 55 while crushing the elastic member 64. Thus, the bearing unit 51 is fitted into the fixed portion 51 while being pressed against the surface 63 facing the lid portion 55.

  The bearing units 38, 38 on both sides in the axial direction are formed in the same non-circular shape (square shape in this example), and the fixing portions 51, 51 on both sides in the axial direction are also the same shape in non-round shape (square shape in this example). It is formed with. Therefore, even if the attachment direction with respect to the attachment base 35 of the lamination | stacking roll 5 is changed right and left, it can mount | wear now.

  In addition, a second clamp 59 is further attached to the mounting base 35, and the tightening direction of the second clamp 59 is orthogonal to the tightening direction of the first clamp 57 (= the pressing direction of the lid). ing.

  The circumference difference absorbing mechanism 30 configured as described above is attached to the laminated roll 5 as follows.

  First, as shown in FIG. 5, the mounting base 35 of the circumference difference absorbing mechanism 30 is arranged so that the cutout portion 53 of the fixing portion 51 faces upward, and the lid portion 55 is removed to open the fixing portion 51. Keep it.

  Next, as shown in FIGS. 5 to 6, the bearing units 38 at both ends of the core 6 of the laminated roll 5 are inserted into the fixing portion 51 of the mounting base 35 through the notch 53. During the insertion, the bearing unit 38 is accurately guided into the fixed portion 51 by the guide portions 61 and 62 (guide rails in this example) formed on the two opposing inner peripheral surfaces of the fixed portion 51. Is included.

  Next, as shown in FIGS. 6 to 7, the notch 53 of the fixing portion 51 of the mounting base 35 is closed with a lid 55, and the lid 55 is fastened and fixed to the mounting base body with a first clamp 57. Finally, the bearing unit 38 is tightened by the second clamp 59 from a direction different from that of the first clamp 57, so that the bearing unit 38 is fixed in the fixing portion 51 of the mounting base 35 more reliably.

  As described above, according to the material supply device 14 and the laminated plate manufacturing apparatus of the present embodiment, the circumferential length difference absorbing mechanism 30 is detachable from the winding core 6, so that it is only necessary to replace the laminated roll 5. The circumference difference absorbing mechanism 30 can be used repeatedly.

  Next, effects of the present embodiment will be enumerated.

  (1) The laminated sheet manufacturing apparatus 10 and the material supply apparatus 12 used for the laminated sheet manufacturing apparatus 10 of the present embodiment absorb a circumferential length difference between the plurality of sheet materials 4a, 4b, and 4c drawn from the laminated roll 5. 30. Therefore, the circumferential length difference absorbing mechanism 30 can absorb the circumferential length difference generated between the plurality of sheet materials 4 a, 4 b, 4 c constituting the multilayer workpiece 8 when the multilayer workpiece 8 is pulled out from the laminated roll 5. As a result, the laminated state of the multilayer workpiece 8 can be stabilized at the workpiece insertion port of the hot press machine 13, and manufacturing defects such as wrinkles entering the manufactured laminated plate 9 can be prevented.

  (2) In this embodiment, the circumference difference absorbing mechanism 30 is attached to the core 6 of the laminated roll 5. Therefore, since the circumference difference absorbing mechanism 30 can be disposed at a position shifted in the axial direction with respect to the laminated roll support portions 21 and 23, even if the plurality of laminated roll support portions 21 and 23 are disposed close to each other in the radial direction. The circumference difference absorbing mechanism 30 can be prevented from interfering with the laminated roll support portions 21 and 23, and the material supply device 12 can be prevented from being enlarged.

  In particular, in a structure in which the number of sheet materials constituting the multilayer workpiece 8 is three or more, a plurality of laminated rolls 5 can be easily arranged close to each other.

  (3) In the present embodiment, the circumferential length difference absorbing mechanism 30 includes a pair of mounting bases 35 suspended from both ends in the axial direction of the core 6 of the laminated roll 5 via bearings 39 and a pair of mounting bases 35. Guide rolls 36 and 37 that guide the sheet material 4b and 4c drawn out from the laminated roll 5 in the drawing direction, a pair of support arms 31 and 33 pivotally attached to a pair of mounting bases 35, and a pair of Tension that is supported between the free rotation ends of the support arms 31 and 33 and applies pressure to the sheet material 4b and 4c that have passed through the guide rolls 36 and 37 from the opposite side to the guide rolls 36 and 37. Additional rolls 32 and 34 are provided.

  Therefore, the circumference difference absorption mechanism 30 attached to the core 6 of the laminated roll 5 has a simple configuration and contributes to cost reduction of the apparatus. Moreover, since the longitudinally opposite ends of the tension applying rolls 32 and 34 are supported by the pair of support arms 31 and 33, the tension applying rolls 32 and 34 have high stability, and the sheet materials 4a, 4b, and 4c are less likely to become wrinkles. Become.

  (4) Moreover, in this embodiment, the attachment base 35 is detachable with respect to the bearing unit 38 with which the axial direction both ends of the winding core 6 were mounted | worn. Therefore, the circumference difference absorbing mechanism 30 can be attached to and detached from the core 6 of the laminated roll 5, so that the circumference difference absorbing mechanism 30 can be used only by replacing the laminated roll 5.

  (5) Moreover, in this embodiment, the bearing unit 38 and the fixing | fixed part 51 are comprised so that it may mutually fit, the bearing units 38 and 38 of both ends are the same shape, and the fixing | fixed part 51 of the attachment base 35 of both ends. , 51 have the same shape. Therefore, it is possible to use by changing the mounting direction of the core 6 of the laminated roll 5 with respect to the mounting base 35. That is, the direction in which the sheet material is wound on the core 6 and the direction in which the sheet material is unwound from the core can be easily changed, and the laminated roll 5 and the circumferential length difference suction mechanism 30 can be changed without changing the design. 5 and the layout change such as the mounting position and mounting direction of the circumference difference absorbing mechanism 30 can be freely performed.

  (6) In the present embodiment, the mounting base 35 includes a notch 53 that allows the bearing unit 38 to be inserted into the fixing 51 in the radial direction by communicating with the fixing 51 from the periphery of the mounting base 35. A lid portion 55 that closes the cutout portion 53, and the lid portion 55 presses the bearing unit 38 toward the inner peripheral surface of the fixed portion 51 in a closed state. Therefore, the bearing unit 38 can be easily attached to the fixing portion 51, and the fixing state of the bearing unit 38 to the fixing portion 51 is stabilized.

  (7) In the present embodiment, the support arms 31 and 33 are pivotally supported on the guide rolls 36 and 37 side with respect to the core 6 so as to be rotatable. For this reason, the lengths of the support arms 31 and 33 can be shortened, thereby further reducing the size of the apparatus.

  (8) In the present invention, the rotation centers of the plurality of support arms 31 and 33 may be made to coincide with each other. However, if the rotation centers of the plurality of support arms 31 and 33 are made to coincide with each other, the plurality of support arms 31 are made. , 33 need to be laminated in the axial direction of the core 6. On the other hand, in this embodiment, since the rotation centers of the plurality of support arms 31 and 33 are provided so as not to coincide with each other, it is not necessary to increase the size in the axial direction of the core 6.

  (9) In the present embodiment, each of the sheet materials 4b and 4c excluding the innermost sheet material 4a in the multilayer work (consisting of a plurality of laminated sheet materials 4a, 4b, and 4c) drawn from the lamination roll 5 is used. On the other hand, guide rolls 36 and 37 and tension applying rolls 32 and 34 are provided. That is, the number of the guide rolls 36 and 37 and the tension applying rolls 32 and 34 is one less than the number of sheet materials. Therefore, since the tension applying rolls 32 and 34 and the support arms 31 and 33 that support the tension applying rolls 32 and 34 are minimized, the number of parts is reduced, which contributes to cost reduction.

(Second Embodiment)
Next, a second embodiment of the circumference difference absorbing mechanism 30 will be described. In the following description, the same components as those in the above-described embodiment are denoted by the same reference numerals, and the description of the configuration and the operation and effect thereof is omitted.

  The circumferential length difference absorbing mechanism 30 of the second embodiment shown in FIG. 11 is different from the first embodiment in that the support arm 31, the tension applying roll 32, and the guide roll 36 are one.

  In the second embodiment, the bearing unit 38 at both ends of the laminated roll 5 has a circular outer peripheral shape, and the inner peripheral surface of the fixed portion 51 formed on the mounting base 35 is formed in a substantially U shape in accordance with this. This is different from the first embodiment. The second embodiment is different from the first embodiment in that the lid 53 is pivotally attached to the attachment base body in that the lid 53 is pivotally attached to the attachment base body.

  Also in the second embodiment, the same operational effects as those of the above-described embodiment can be obtained.

  As mentioned above, although this invention was demonstrated taking the above-mentioned embodiment as an example, this invention is not limited only to the above-mentioned embodiment.

  For example, the copper foil may be a metal foil other than a copper foil such as an aluminum foil or a stainless steel foil, and the polyimide film may be a liquid crystal polymer, an aramid film, a pet film, an ultra-thin glass cloth base epoxy resin sheet, or the like. Various film-like substrates other than the polyimide film may be used.

  In the above-described embodiment, six laminated plates are laminated at the same time. However, in the present invention, one laminated plate may be laminated. However, the more the number of laminated plates manufactured simultaneously, that is, the larger the number of laminated rolls, the more limited the space for arranging the supporting portions of the laminated rolls.

  Further, in the above-described embodiment, the winding core is attached to the laminated roll support portion via the rotating shaft. However, in the present invention, the winding core is directly attached to the laminated roll support portion not via the rotating shaft. Also good.

  In the above-described embodiment, the bearing unit 38 includes the bearing 39 that is press-fitted and fixed to the core 6, and the plate-shaped bearing base 40 that is fixed to the outer peripheral side of the bearing 39. However, in the present invention, the bearing unit 38 may be configured by only the bearing 39 as long as the mounting base 35 can removably fix the bearing unit 38.

  In the above-described embodiment, in order to minimize the number of guide rolls, tension applying rolls, and support arms, the number of guide rolls, tension applying rolls, and support arms is one less than the number of sheets constituting the multilayer work. However, in the present invention, the number of sheets and the number of guide rolls, tension applying rolls, and support arms may be the same or larger.

  In addition, it is needless to say that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on the above embodiment are all included in the scope of the present invention.

It is a schematic diagram of the lamination roll manufacturing apparatus used for the manufacturing apparatus of the laminated sheet of one Embodiment of this invention. The schematic diagram of the manufacturing apparatus of the laminated board of this embodiment. The schematic diagram explaining roughly the manufacturing principle of the laminated board manufactured with the manufacturing apparatus of the same laminated board. The perspective view of the circumference difference absorption mechanism used for the material supply apparatus of the manufacturing apparatus of the same laminated board. It is a figure explaining the process of mounting | wearing a laminated roll to the same circumferential length difference absorption mechanism, Comprising: The figure before mounting | wearing. It is a figure explaining the process of mounting | wearing a laminated roll to the circumference difference absorption mechanism, Comprising: The figure in mounting | wearing. It is a figure explaining the process of mounting | wearing a laminated roll to the same circumferential length difference absorption mechanism, Comprising: The figure after mounting | wearing. It is a side view of the same circumference difference absorption mechanism, Comprising: The figure which shows the state of unwinding of a multilayer workpiece | work. It is a side view of the same circumference difference absorption mechanism, Comprising: The figure which shows the state of the unwinding of a multilayer workpiece | work. Sectional drawing of the circumference difference absorption mechanism. FIG. 11A is a diagram showing a second embodiment of the circumferential difference absorption mechanism, in which FIG.

Explanation of symbols

4a, 4c: Copper foil (sheet material)
4b Polyimide film (sheet material)
DESCRIPTION OF SYMBOLS 5 ... Lamination roll 6 ... Core core 10 ... Laminate board manufacturing apparatus 12 ... Material supply apparatus 13 ... Double belt press apparatus (heat press machine)
DESCRIPTION OF SYMBOLS 14 ... Product winding device 20 ... Mounting wall 21, 23 ... Laminate roll support part 30 ... Circumference difference absorption mechanism 31, 33 ... Support arm 32, 34 ... Tension adding roll 36, 37 ... Guide roll 38 ... Bearing unit 39 ... Bearing 40 ... Bearing base 51 ... Fixed part 53 ... Notch part 55 ... Cover part

Claims (4)

A material supply device for unwinding and supplying each sheet material from a laminating roll wound in a roll on a core in a state where a plurality of sheet materials are laminated,
Comprising a circumference difference absorbing mechanism for absorbing a circumference difference of each sheet material of the laminated roll;
The circumference difference absorbing mechanism is configured to draw a pair of mounting bases suspended via bearings at both axial ends of the core, and a sheet material that is pivotally supported between the mounting bases and pulled out from the laminated roll. A guide roll that guides in the direction, a pair of support arms pivotally attached to the both mounting bases, and a sheet material that is installed between the rotation free ends of the pair of support arms and passes through the guide roll A tension applying roll that applies pressure to the sheet material from the side opposite to the guide roll to give tension, and
The material supply device according to claim 1, wherein the mounting base includes a fixing unit that detachably fixes a bearing unit having at least the bearings mounted on both axial ends of the core. The material supply device according to claim 1,
The material supply, wherein the bearing unit and the fixing portion are configured to fit each other, the bearing units at both ends have the same shape, and the fixing portions of the mounting bases at both ends have the same shape. apparatus. The material supply device according to claim 1 or 2,
The mounting base is configured to include a cutout portion that allows the bearing unit to be inserted into the fixed portion by communicating with the fixed portion from a peripheral edge of the mounting base, and a lid portion that closes the cutout portion,
The material supply apparatus according to claim 1, wherein the lid portion presses the bearing unit in a closed state. A material supply device that unwinds and supplies the plurality of sheet materials from a lamination roll wound in a roll shape around a core in a state where a plurality of sheet materials are laminated, and a plurality of sheet materials from the material supply device are laminated. A heat pressing machine that heat-welds a plurality of sheet materials to each other by hot pressing while passing in a state, and a laminated plate manufacturing apparatus comprising:
The material supply device includes a circumferential length difference absorbing mechanism that absorbs circumferential length differences of a plurality of sheet materials of the laminated roll,
The circumference difference absorbing mechanism is configured to draw a pair of mounting bases suspended via bearings at both axial ends of the core, and a sheet material that is pivotally supported between the mounting bases and pulled out from the laminated roll. A guide roll that guides in the direction, a pair of support arms pivotally attached to the both mounting bases, and a sheet material that is installed between the rotation free ends of the pair of support arms and passes through the guide roll A tension applying roll that applies pressure to the sheet material from the side opposite to the guide roll to give tension, and
The apparatus for manufacturing a laminated board, wherein the mounting base includes a fixing unit that detachably fixes a bearing unit having at least the bearing mounted on both axial ends of the winding core.

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