JP5855787B1 - Roller press apparatus and roller press method - Google Patents

Abstract

An object of the present invention is to efficiently increase the surface temperature in the width direction of an object. A plurality of first rollers (upper press roller 10A, lower press roller 10B) for sandwiching and conveying an object 2 having a planar member 2C disposed on the surface of a core material 2A via an adhesive 2B; A plurality of second rollers, which are a plurality of second rollers disposed between the plurality of first rollers, and have first electrodes 21 and second electrodes 22 disposed alternately and spirally on the surface of the roller body 20. (Upper electrode roller 11 </ b> A, lower electrode roller 11 </ b> B) and a high-frequency oscillator for applying a high-frequency voltage between first electrode 21 and second electrode 22. [Selection] Figure 1

Description

  The present invention adheres a planar member to a core by continuously applying a high-frequency voltage while sandwiching and transporting an object in which the planar member is disposed on the surface of the core via an adhesive. The present invention relates to a roller press apparatus and a roller press method.

  The present applicant applies the high-frequency voltage to the core material continuously while sandwiching and conveying the object in which the planar member is disposed on the surface of the core material with an adhesive interposed between the rollers. A roller press device for bonding is developed (see Patent Document 1). In this roller press apparatus, an object is conveyed by applying a high-frequency voltage between a plurality of rollers formed of a conductor and a plurality of electrodes respectively disposed between the plurality of rollers. High frequency can be applied continuously without interruption, and it is possible to efficiently heat and bond the planar member to the core material.

Japanese Patent No. 5744356

  However, in the above roller press apparatus, the surface temperature tends to rise in the length direction of the object (conveyance direction of the object), and the surface temperature tends not to rise in the width direction (the rotation axis direction of the roller). is there. Therefore, in order to raise the surface temperature almost uniformly with respect to each direction, it is necessary to change the direction of the object by 90 ° in the middle, but in the case of a long object, it is only in one direction. Since it cannot pass through, the surface temperature in the width direction may not be raised well.

  Then, in this invention, it aims at providing the roller press apparatus and roller press method which can raise surface temperature efficiently with respect to the width direction of a target object.

  The roller press device of the present invention is disposed between a plurality of first rollers that sandwich and convey an object in which a planar member is disposed on the surface of a core material via an adhesive, and a plurality of first rollers. A plurality of second rollers, a plurality of second rollers having first and second electrodes alternately arranged in a spiral shape on the surface of the roller body, and a high frequency between the first electrode and the second electrode And a high-frequency oscillator for applying a voltage.

  Further, the roller press method of the present invention includes a method in which an object in which a planar member is disposed on the surface of a core material via an adhesive is sandwiched and conveyed by a plurality of first rollers, and is arranged between the plurality of first rollers. A plurality of second rollers provided between the first electrode and the second electrode of the plurality of second rollers having a first electrode and a second electrode alternately spirally disposed on the surface of the roller body. And applying a high frequency voltage from a high frequency oscillator.

  According to these inventions, an object in which a planar member is disposed on the surface of the core material via an adhesive is sandwiched and conveyed by the plurality of first rollers, and disposed between the plurality of first rollers. A high frequency is applied to the adhesive by a high frequency voltage applied from a high frequency oscillator between the first electrode and the second electrode of the plurality of second rollers. At this time, since the high frequency moves in the rotation axis direction of the second roller, that is, the width direction of the object by the rotation of the second roller, the surface temperature is efficiently increased in the width direction of the object, and the core A planar member can be bonded to the material.

  Here, it is desirable that the plurality of second rollers be disposed at positions that do not contact the object. This eliminates the need to match the rotation speed of the second roller with the conveyance speed of the object by the plurality of first rollers, so that the rotation speed of the second roller can be set to an optimum speed for heating the object. .

  According to the present invention, a high frequency is continuously applied while sandwiching and transporting an object in which a planar member is disposed on the surface of a core material via an adhesive, in particular, the width direction of the object. In contrast, it is possible to efficiently apply a high frequency to raise the surface temperature, and it is possible to bond the planar member to the core material.

It is a side view of the roller press apparatus in an embodiment of the invention. It is a top view of the roller press apparatus of FIG. It is explanatory drawing which shows the detail of the electrode roller of FIG.

  1 is a front view of a roller press apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of the roller press apparatus of FIG. 1, and FIG. 3 is an explanatory view showing details of the electrode roller of FIG.

  As shown in FIG. 1 and FIG. 2, the roller press device 1 in the embodiment of the present invention includes a plurality of first rollers (hereinafter referred to as first rollers above the object 2) that sandwich and convey the object 2. "Upper press roller 10A", the lower first roller is referred to as "lower press roller 10B"), and a plurality of first press rollers disposed between the plurality of upper press rollers 10A and between the plurality of lower press rollers 10B. 2 rollers (hereinafter, the second roller between the upper press rollers 10A is referred to as "upper electrode roller 11A" and the second roller between the lower press rollers 10B is referred to as "lower electrode roller 11B"), and a first electrode 21 described later. And the second electrode 22 have a high-frequency oscillator 12 (see FIG. 3) for applying a high-frequency voltage.

  The object 2 is obtained by arranging a planar member 2C on the surface of a core material 2A via an adhesive 2B. The core material 2A is a plate-like woody material such as wood, MDF (medium density fiberboard), LVL (single-plate laminated material), or particle board, and may have any structural form such as a so-called flash structure or a solid core structure. In addition, it is also possible to use materials other than the wood material as the core material 2A. The adhesive 2B is a water-based adhesive using a synthetic resin such as a thermoplastic resin such as vinyl acetate or vinyl chloride, or a thermosetting resin such as phenol, resilsinol, Yulia or melamine. The planar member 2C is a surface layer material having a thickness of about 0.05 mm to 3 mm such as a decorative material such as a plate material or a sheet material or a heat insulating material for covering the surface of the core material 2A. That is, the object 2 constituted by the core material 2A, the adhesive 2B, and the planar member 2C is a dielectric.

  The upper press roller 10 </ b> A and the lower press roller 10 </ b> B are steel cylindrical rollers having a rotation axis direction X <b> 1 as a direction orthogonal to the conveyance direction F <b> 1 of the object 2. The distance between the upper press roller 10 </ b> A and the lower press roller 10 </ b> B is set slightly narrower than the thickness of the object 2. The upper press roller 10A rotates in the rotation direction Z1, and the lower press roller 10B rotates in the rotation direction Z2 opposite to the rotation direction Z1. As a result, the object 2 is pressed by being sandwiched between the upper press roller 10A and the lower press roller 10B, and in the pressurized state, the object 2 is moved in the transport direction F1 by the upper press roller 10A and the lower press roller 10B. Be transported.

  As shown in FIG. 2, the upper electrode roller 11 </ b> A and the lower electrode roller 11 </ b> B have first electrodes 21 and second electrodes 22 that are alternately and spirally disposed on the surface of the roller body 20. The first electrode 21 and the second electrode 22 are parallel to the surface of the roller body 20. The upper electrode roller 11A rotates in the same rotation direction Z1 as the upper press roller 10A, and the lower electrode roller 11B rotates in the same rotation direction Z2 as the lower press roller 10B. In the present embodiment, the upper electrode roller 11A and the lower electrode roller 11B are disposed at positions that do not contact the object. The roller body 20 is made of a hard resin having high heat resistance such as a fluororesin (fluorocarbon resin) such as PTFE (polytetrafluoroethylene) or a silicon resin (silicone resin).

  A rotating electrode member 13A connected to the power supply terminal 12A of the high-frequency oscillator 12 via a sliding contact mechanism is fixed to one end portion of the roller body 20 in the rotation axis direction X1. A rotating electrode member 13B connected to the ground terminal 12B of the high-frequency oscillator 12 via a sliding contact mechanism is fixed to the other end portion of the roller body 20 in the rotation axis direction X1. The first electrode 21 is connected to the rotating electrode member 13A, and the second electrode 22 is connected to the rotating electrode member 13B. As a result, a high frequency voltage is applied from the high frequency oscillator 12 between the first electrode 21 and the second electrode 22.

  In the present embodiment, the first electrode 21 and the second electrode 22 are wound around the surface of the roller body 20 so as to be parallel to each other, and are opposite to the rotating electrode members 13A and 13B to which each is connected. It is folded at the end of the side, but is not limited to this. In short, it is only necessary that the first electrode 21 and the second electrode 22 are alternately arranged on the surface of the roller body 20 in a spiral shape.

  In the roller press device 1 having the above configuration, the object 2 in which the planar member 2C is arranged on the surface of the core material 2A via the adhesive 2B is sandwiched by the upper press roller 10A and the lower press roller 10B and conveyed in the conveying direction F1. In doing so, a high frequency voltage is applied from the high frequency oscillator 12 between the first electrode 21 and the second electrode 22 of the upper electrode roller 11A and the lower electrode roller 11B. As a result, internal heat generation of the object 2 that is a dielectric material occurs, and the adhesive 2B between the core material 2A and the planar member 2C is dried by this heat, and the core material 2A and the planar member 2C are bonded. The

  At this time, the energy generated by the application of the high-frequency voltage is strongest at the intermediate position between the first electrode 21 and the second electrode. However, in the roller press device 1 in this embodiment, the upper electrode roller 11A and the lower electrode roller 11B are By rotating, the intermediate position between the first electrode 21 and the second electrode continues to move continuously in the rotation axis direction X1 of the roller. That is, in order to cause internal heat generation of the object 2 while the high frequency moves in the width direction of the object 2 (rotation axis direction X1), the core 2A of the object 2 extends in the length direction (conveyance direction F1). In particular, the temperature of the member 2A-2 extending in the width direction (rotational axis direction X1) of the core 2A of the object 2 is increased more efficiently than the member 2A-1, so that the planar member 2C is made. It is possible to bond.

  In addition, since the upper electrode roller 10A and the lower electrode roller 11B are disposed at positions that do not contact the object 2, the rotation speed of the upper electrode roller 11A and the lower electrode roller 11B is determined by the upper press roller 10A and the lower press roller 10B. There is no need to match the conveyance speed of the object 2. Therefore, the rotation speed of the upper electrode roller 11A and the lower electrode roller 11B can be set to an optimum speed for the heating of the object 2, particularly the member 2A-1 in the length direction of the core material 2A of the object 2. . Further, it is possible to rotate the upper electrode roller 10A and the lower electrode roller 10B in the direction opposite to the rotation directions Z1 and Z2, respectively, or in the same direction.

  In the present embodiment, since the adhesive 2B is a water-based adhesive, the moisture in the adhesive 2B evaporates and dries, and the core material 2A and the planar member 2C are bonded. As the adhesive 2B, an aqueous thermoplastic resin, a thermosetting resin, or the like can be used in addition to the aqueous adhesive.

  The roller press apparatus and the roller press method of the present invention apply a high-frequency voltage continuously while sandwiching and transporting an object in which a planar member is disposed on the surface of a core material via an adhesive. It is useful as an apparatus and method for bonding a planar member to a core material.

DESCRIPTION OF SYMBOLS 1 Roller press apparatus 2 Object 2A Core material 2B Adhesive 2C Planar member 10A Upper press roller 10B Lower press roller 11A Upper electrode roller 11B Lower electrode roller 12 High frequency oscillator 12A Power supply terminal 12B Ground terminal 13A, 13B Rotating electrode member 20 Roller Body 21 First electrode 22 Second electrode

Claims (3)

A plurality of first rollers for nipping and conveying an object in which a planar member is disposed on the surface of the core material via an adhesive;
A plurality of second rollers disposed between the plurality of first rollers, and a plurality of second rollers having first electrodes and second electrodes alternately disposed in a spiral shape on the surface of the roller body;
A roller press apparatus comprising: a high frequency oscillator for applying a high frequency voltage between the first electrode and the second electrode.   2. The roller press device according to claim 1, wherein the plurality of second rollers are arranged at positions that do not contact the object. Nipping and conveying the object in which the planar member is arranged on the surface of the core material via the adhesive by the plurality of first rollers,
A plurality of second rollers disposed between the plurality of first rollers, the plurality of second rollers having first electrodes and second electrodes alternately disposed in a spiral on the surface of the roller body; A roller press method comprising applying a high frequency voltage from a high frequency oscillator between a first electrode and the second electrode.

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