JP4793345B2 - 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 parts are arranged without increasing the size of the apparatus, the plurality of roll support parts will be close to each other, and the work of mounting the roll on the roll support part at the time of setting or hot pressing the sheet material Inserting into the machine 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 problem that wrinkles and creases are formed when heat-pressing with overlapping.

  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.

  An apparatus for manufacturing a laminate and a material supply apparatus according to the present invention include a circumference difference absorption mechanism that absorbs a circumference difference of a plurality of sheet materials of a lamination roll, and the circumference difference absorption mechanism is pulled out from the lamination roll. A tension-applying roll that presses the sheet material from the inside and applies a tension toward the outside, and is rotatably supported at both axial ends of the winding core of the laminated roll, and the tension-adding roll on the rotation free side And a pair of support arms for supporting the head.

  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. That is, when the tension applying roll is pressed against the sheet material from the inside to the outside, it is possible to absorb a circumferential length difference generated between the plurality of sheets.

  Further, since the tension applying roll is pivotally supported by the support arm on the core of the laminated roll, the circumferential difference absorbing mechanism is mounted on the core of the laminated roll. Therefore, it can be arranged at a position shifted in the axial direction of the laminated roll with respect to the laminated roll support part that supports the core of the laminated roll, and even if a plurality of laminated roll support parts are arranged close to each other, these laminated roll support parts Therefore, the peripheral length difference absorbing mechanism can be prevented from interfering with each other, and an increase in the size of the material supply device can be avoided.

  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 by heat welding (laminate molding), and the laminate laminated 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 to be used is performed by winding up to the core 6 in the state of laminating | stacking several sheet material 4a, 4b, 4c of elongate strip | belt shape 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 laminate manufactured by the laminate manufacturing apparatus 10 shown in FIG. 2 is a double-sided copper foil laminate (laminated sheet) in which both sides of the polyimide film 4b become 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 when the stopper protrudes in the radial direction, the rotary shaft 25 and the core 6 and the rotating shaft 25 and the winding core 6 are integrally rotated.

  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 in a double bed press machine 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 long by (t2) / 2 × 2π per turn and is unwound by (t2 + t3) / 2 × 2π long per turn with respect to the inner sheet material 4a.

  Therefore, when the multilayer workpiece 8 is inserted into the double belt press device 13, the unwinding length differs between the sheet materials 4 a, 4 b, 4 c of the multilayer workpiece 8, and the sheet is inserted at the workpiece insertion port of the double belt press device 13. If the materials 4a, 4b, and 4c are not laminated with high accuracy, wrinkles or the like may be generated, which may cause defective molding of the laminated plate. Therefore, in order to prevent such a problem from occurring, in the present embodiment, the material supply device 12 is configured to include a circumferential length difference absorbing mechanism 30.

"Circumferential length absorption mechanism"
Next, the circumference difference absorbing mechanism 30 will be described in more detail with reference mainly 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.

  The circumferential length difference absorbing mechanism 30 of this embodiment includes a pair of support arms 31, 31 and 33, 33 that are pivotally supported on both axial ends of the core 6 of the laminated roll 5, and the pair of support arms can freely rotate. Tension-adding rolls 32 and 34 that are installed between the ends so as to extend in parallel with the core 6 and are rotatably supported by a pair of support arms.

  The tension applying rolls 32 and 34 are in pressure contact with the sheet materials 4b and 4c drawn from the lamination roll 5 from the inside (= the sheet material 4a side inside the sheet materials 4b and 4c) and the outside (= the sheet material 4b). The tension is applied toward the sheet material side outside 4c. Here, the number of the tension applying rolls 32 and 34 may be the same as the number of the sheet materials 4a, 4b, and 4c. In this example, the tension applying rolls 32 and 34 include a plurality of sheet materials 4a and 4b. 4c, tension is applied to each of the sheet materials 4b and 4c excluding the innermost sheet material 4a, and the innermost sheet material 4a is wound up through the double belt press device 13 without a tension applying roll. Since the apparatus 14 is wound up, the number of tension applying rolls 32 and 34 is one less than the number of sheet materials 4a, 4b and 4c. That is, in this example, the number of the tension applying rolls 32 and 34 is two, which is one less than the number of sheet materials of the multilayer work 8.

  The tension applying rolls 32 and 34 are in pressure contact with the sheet materials 4 b and 4 c by the weights of the tension adding rolls 32 and 34 and the support arms 31 and 33. By such a circumferential length difference absorbing mechanism, the unwinding length between the plurality of sheet materials 4a, 4b, 4c put into the double belt press device 13 is absorbed, and wrinkles are generated in the manufactured laminated board 9. Is prevented.

  Next, effects of the present embodiment will be enumerated.

  First, the laminated plate manufacturing apparatus 10 and the material supply apparatus 12 used for the laminated plate manufacturing apparatus 10 of the present embodiment absorb the circumferential difference of the plurality of sheet materials 4 a, 4 b, 4 c drawn from the laminated roll 5. A mechanism 30 is provided. 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.

  Secondly, 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.

  Thirdly, in the present embodiment, the circumferential difference absorbing mechanism 30 includes a pair of support arms 31, 31 and 33, 33 rotatably supported on both axial ends of the core 6 of the laminated roll 5, Tension adding rolls 32 and 34 which are provided between the rotation free ends of the pair of support arms and apply pressure to the sheet material 4b and 4c drawn from the laminated roll 5 by pressing from the inner side to the outer side. It is configured. 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.

  In addition, compared with a dancer roll mechanism configured to include a pair of fixed rolls and a dancer roll movable with respect to the pair of fixed rolls as in the past, there is no pair of fixed rolls, so the number of parts is reduced. To do.

  Further, since both ends of the tension applying rolls 32, 34 in the longitudinal direction are supported by the pair of support arms, the tension applying rolls 32, 34 are highly stable, and the sheet materials 4a, 4b, 4c are less likely to become wrinkles.

  Fourthly, in the present embodiment, the tension applying rolls 32 and 34 are applied to the sheet materials 4b and 4c excluding the innermost sheet material 4a among the plurality of sheet materials 4a, 4b and 4c drawn from the laminated roll 5. On the other hand, pressure is applied from the inside and tension is applied to the outside. That is, the number of 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.

  Next, a modification of the circumference difference absorbing mechanism will be described.

"First modification"
In the above-described embodiment, the configuration is such that two tension applying rolls 32 and 34 are provided for one laminated roll 5 wound up in a state where the three sheet materials 4a, 4b, and 4c are laminated. In the first modification shown in FIG. 8, the above-described embodiment is provided in that one tension applying roll 32 is provided for one laminated roll 5 wound in a state in which two sheet materials 4 a and 4 b are laminated. Is different. In such a first modified example, the same function and effect as in the above-described embodiment can be obtained.

  Moreover, in the above-mentioned embodiment, in the circumference difference absorption mechanism 30, the tension applying rolls 32 and 34 are pressed against the sheet materials 4a and 4b using gravity, but for example, the following FIGS. As in the 12th to 5th modifications of the twelfth, urging means 41, 43, 45, 47 for rotating the support arm in the direction in which the tension applying roll is pressed against the sheet material may be further provided.

"Second modification"
In the second modification shown in FIG. 9, the urging means 41 is constituted by a spring member 41. The spring member 41 is formed of a constant load spring (for example, a spring spring).

“Third Modification”
Further, as in the third modification shown in FIG. 10, the spring means 43 as the urging means may be constituted by a tension spring or a compression repulsion spring.

  In the second and third modified examples, the urging means can be configured with a simple structure, and there is an advantage that the cost of the apparatus can be reduced. Note that when a constant load spring is used as in the second modification, a substantially constant urging force can always be applied to the sheet material, so that a stable operation can be obtained regardless of the rotation amount of the support arm. There is.

  Further, as in the following fourth and fifth modifications, the urging means may be constituted by actuators 45 and 47 that can change the urging force.

"Fourth modification"
In the fourth modification shown in FIG. 11, the actuator 45 that can change the urging force includes an air actuator 45 (air cylinder). One end of the wire 46 is fixed to the tip of the advance / retreat rod of the air cylinder 45, and the other end of the wire 46 is fixed to the rotation free end side of the support arm 31.

“Fifth Modification”
Further, as in the fifth modification shown in FIG. 12, the actuator 47 that can change the biasing force may be an electric actuator. As an electric actuator, an electric motor can be used as a drive source, and a moving part can be configured as an advance / retreat type or a rotary type.

  When the urging means is an actuator as in the fourth and fifth modifications, there is an advantage that the urging force can be changed when the material or thickness of the sheet material is changed.

  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, an example of a laminating roll that is wound on a core in a state where two or three sheet materials are laminated is described. However, a state where two or more sheet materials are laminated The present invention can be applied regardless of the number of stacked rolls.

  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.

  In the present invention, the core may be hollow or solid. For example, when the winding core is solid, the winding core may be directly attached to the laminated roll support portion without using the rotating shaft.

  In the above-described embodiment, in order to minimize the number of tension applying rolls and support arms, the number of tension applying rolls and supporting 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 tension applying rolls and supporting arms may be the same or many.

  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 board of 1st Embodiment. The schematic diagram of the manufacturing apparatus of the laminated board of 1st 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. The side view of the circumference difference absorption mechanism. Sectional drawing of the circumference difference absorption mechanism. The conceptual diagram which shows the operating principle of the same circumference difference absorption mechanism. The side view of the 1st modification of the circumference difference absorption mechanism. The side view of the 2nd modification of the same circumference difference absorption mechanism. The side view of the 3rd modification of the same circumference difference absorption mechanism. The side view of the 4th modification of the circumference difference absorption mechanism. The side view of the 5th modification of the circumference difference absorption mechanism.

Explanation of symbols

4a, 4c: Copper foil (sheet material)
4b: Polyimide film (sheet material)
5: Laminate roll 6: Core 10: Laminate plate manufacturing device 12: Material supply device 13: Double belt press device (heat press)
14: Product winding device 20 ... Mounting wall 21, 23 ... Laminate roll support 30 ... Circumference difference absorbing mechanism 31, 33 ... Support arm 32, 34 ... Tension applying roll 41, 43, 45, 47 ... Biasing means

Claims (6)

A material supply device that unwinds and supplies each sheet material from a laminating roll in which a plurality of sheet materials are wound in a roll shape on a winding core,
A circumference difference absorption mechanism for absorbing a circumference difference of a plurality of sheet materials of the laminated roll is provided,
The circumferential difference absorbing mechanism includes one or more tension-adding rolls that press the sheet material drawn from the laminated rolls to apply tension toward the outside, and both axial ends of the winding cores of the laminated rolls. And a pair of one or more support arms which are rotatably supported by the shaft and support each tension applying roll on the rotation free side. The material supply device according to claim 1,
The material supply apparatus, wherein the tension application roll and / or the weight of the support arm are used to urge the tension application roll in a direction in pressure contact with the sheet material. The material supply device according to claim 1,
The material supply apparatus according to claim 1, further comprising an urging unit that rotates the support arm in a direction in which the tension applying roll is pressed against the sheet material. The material supply device according to claim 3,
The material supply device according to claim 1, wherein the biasing means is constituted by a spring member. The material supply device according to claim 3,
The material supply apparatus according to claim 1, wherein the biasing means is an actuator that can change a biasing force. A material supply device that unwinds and supplies the plurality of sheet materials from a laminating roll wound around the core in a state of laminating a plurality of sheet materials,
A heat press machine that heat-welds a plurality of sheet materials to each other by heat-pressing while passing a plurality of sheet materials from the material supply device in a laminated state; and
A laminate manufacturing apparatus comprising:
The material supply device includes a laminated roll support portion that rotatably supports a core of the laminated roll, and a circumferential difference absorption mechanism that absorbs a circumferential difference between a plurality of sheet materials of the laminated roll,
The circumferential difference absorbing mechanism includes one or more tension-adding rolls that press the sheet material drawn from the laminated rolls to apply tension toward the outside, and both axial ends of the winding cores of the laminated rolls. And a pair of one or more support arms that are rotatably supported by the shaft and support each tension applying roll on the rotation free side thereof.

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