JP2003329083A - Method for manufacturing sandwiched vibration damper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a damper by which poor forming, loss of viscoelastic material, occurrence of scrap, etc., can be avoided. <P>SOLUTION: In the method for manufacturing the damper, a space S1 to be filled with the viscoelastic material is formed between surfaces of hard plates 1A, 2A, and in addition, through holes H1a-H1d serving as a relief port are provided. With spacer members P1a-P1d set, thermoplastic viscoelastic material Q1, Q2 charged inside the space S1 in excess beforehand are melted by heating and pressed together with the hard plates 1A, 2A. The space S1 is completely filled with the liquid of the viscoelastic material while the liquid of the viscoelastic material pushes out residual air and excess liquid from the through holes H1a-H1d. As a result, a seamless integral plate of the thermoplastic viscoelastic material is charged without causing poor forming. Because the viscoelastic material is thermoplastic, its recycling is possible, and loss of material and occurrence of scrap can be avoided. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a sandwich type vibration damping damper in which viscoelastic materials are laminated in layers between plate surfaces of a plurality of hard plates (between plate surfaces). is there.

[0002]

2. Description of the Related Art Sandwich type damping dampers (hereinafter referred to as
Abbreviated as "damper" as appropriate. ) Is used for the purpose of improving the earthquake resistance of structures such as buildings.
As shown in FIGS. 16 (a) and 16 (b), a so-called sandwich structure in which viscoelastic material 3A is filled in layers between plate surfaces of two hard plates 1A and 2A whose surfaces face each other is provided. is doing. This damper is fixed by screwing it to the structure using the mounting holes GA and GB formed at the base ends of the hard plates 1A and 2A, and viscoelasticizes the vibration when an earthquake or the like occurs. The material 3A absorbs it so that it exhibits a seismic function.

The method for manufacturing the damper shown in FIG. 16 is as follows: 1) Hard plates 1A and 2A are arranged in a mold, and a raw material is injected in a liquid form into a filling space formed by the mold and cured. Method of using viscoelastic material 2) A viscoelastic material having a predetermined shape is prepared in advance, and this viscoelastic material 3
For example, a method of manufacturing by bonding A to the hard plates 1A and 2A with an adhesive is possible. Viscoelastic materials used in these manufacturing methods include viscoelastic materials that react and harden and thermoplastic viscoelastic materials.

[0004]

However, the former damper manufacturing method of casting the viscoelastic material 3A between the plate surfaces of the hard plates 1A and 2A has the following problems. (A) Since both the thermoplastic viscoelastic body and the reaction-curing type viscoelastic body are elastic materials, the melt viscosity of the raw material is high, and air bubbles are generated during filling, which tends to result in defective products. (B) The temperature for melting the raw material is about 200 ° C. for the thermoplastic material, and about 120 ° C. for the reaction curing type
It is expensive and difficult to handle in work. (C) If a simple spacer is used, liquid will leak from the seal part, so it is necessary to provide a special seal. (D) If a reaction-curing type viscoelastic material is used, it cannot be recycled, so it cannot meet environmental requirements.

Further, the latter damper manufacturing method in which the hard plates 1A and 2A and the viscoelastic material 3A are bonded with an adhesive has the following problems. (A) Since a large sheet-shaped viscoelastic material is manufactured and a viscoelastic material having a predetermined shape to be attached is cut out from this, loss of the viscoelastic material 3A and waste materials are likely to occur. It is conceivable to use such waste materials in contact with each other, but seams are generated in the viscoelastic material 3A of the damper, which is not preferable in terms of characteristics (b) Since the thickness of the sheet becomes the thickness of the product as it is,
Although it is required to manufacture the viscoelastic material 3A with high thickness accuracy, it is difficult to manufacture such a sheet-shaped viscoelastic material with high thickness accuracy. (C) Hard plate 1 to withstand strong vibrations such as earthquakes
A special adhesive is required to bond the A and 2A and the viscoelastic material 3A.

The present invention has been made in view of the above situation, and its problem is that molding defects such as air pockets can be avoided, and a special seal for preventing liquid leakage is not necessary, and in addition, The loss of elastic material and the generation of waste material can be avoided, and a viscoelastic material layer of a predetermined size can be formed without producing a raw material sheet of viscoelastic material with high thickness accuracy, requiring a special adhesive. Another object of the present invention is to provide a method for manufacturing a sandwich type vibration damper.

[0007]

In order to solve the above-mentioned problems, a method for manufacturing a sandwich-type vibration damping damper according to the present invention comprises a viscoelastic material layered between plate surfaces of hard plates whose plate surfaces face each other. A method for manufacturing a sandwich type damper for damping, wherein a spacer member is set so that a space for filling the viscoelastic material is formed between plate surfaces of the hard plate and the filling space A plurality of through-holes penetrating between the inside and the outside are provided, and at least one of the plurality of through-holes is a protruding through-hole having both a vertical dimension and a horizontal dimension of 1.5 mm or more. Volume is V + Δ
V (V is the volume of the filling space, ΔV is an excessive amount) is introduced and then heated, and the whole hard plate is pressure-compressed to form the viscoelastic material, and at the same time, the hard plate is bonded and laminated. It is characterized by that.

According to the present invention having the above-mentioned structure, the thermoplastic viscoelastic material which is melted and has fluidity is pressed together with the hard plate, so that residual air in the filling space formed by the spacer member is retained. While being pushed out of the through hole to reach every corner of the filling space, excess viscoelastic material is pushed out of the filling space through the protruding through hole of a sufficient size. Then, when the heating / pressurization is stopped and the viscoelastic material cools and solidifies, the thermoplastic viscoelastic material is laminated between the plate surfaces of the hard plates in a state of being adhered to the plate surfaces of the hard plates. Become. That is, in the present invention, the sandwich type vibration damping damper is manufactured by so-called press molding.

The protruding through-hole has a vertical dimension of 1.5 and a horizontal dimension of 1.5.
By having a cross-sectional shape of mm or more, excess thermoplastic viscoelastic material is discharged together with air. If the cross-sectional shape is smaller than this, it becomes difficult to discharge excess viscoelastic material. The vertical dimension and the horizontal dimension do not have to be directions that are exactly orthogonal to each other. Even if one dimension (for example, length) is 1.5 mm or more, if the other dimension (width) is narrow, the effect of discharging an excessive amount of viscoelastic material cannot be obtained, so that such a shape is excluded. .

The other through holes are not particularly limited as long as the air in the filling space is discharged together with the compression of the viscoelastic material block, but at least one of the vertical dimension and the horizontal dimension is 0.5 mm or more. It is preferable that the air is easily discharged.

The shape of the through hole is not limited, but a preferable shape is a circle, an ellipse, a square, a rectangle, a semicircle, a trapezoid or the like in view of processing.

In the case of the present invention, since the thermoplastic viscoelastic material containing an excessive amount is preliminarily put in the filling space of the viscoelastic material in the form of a sheet without air pockets, the amount of the viscoelastic material is insufficient. At the same time, the residual air in the filling space is also discharged from the through hole, and no air pools are created in the filling space of the viscoelastic material and the viscoelastic material itself, so that the unfilled portion of the viscoelastic material is created. It is possible to avoid defective molding of the viscoelastic material.

Further, the thermoplastic viscoelastic material is once melted and integrated even if a plurality of cut sheet-like ones are put therein, so that the thermoplastic viscoelastic material is formed into a seamless single sheet. . Further, since it is not melted and injected in a liquid state, it does not require a special seal for preventing liquid leakage.

According to the manufacturing method of the present invention, since the thermoplastic viscoelastic material can be recycled (reused), the portion (burr) discharged to the outside of the filling space and the scraps in cutting are reused as raw materials. Yes, no material loss occurs.
Also, the damper itself can be separated and collected for each constituent material, which contributes to the reduction of the amount of industrial waste.

In addition, since the viscoelastic material is excessively added to the filling space accurately defined by the spacer member with respect to the volume of the filling space, and heated, compressed and flowed to form the viscoelastic material, Since the elastic material is molded into a predetermined shape and the viscoelastic material itself adheres to the surface of each hard plate, sufficient adhesive force can be obtained without adhesive, but if necessary, blasting or general Any adhesive may be used.

In the manufacturing method of the present invention, even if the shape of the space for filling the viscoelastic material becomes large, the shape and size of the spacer member can be adjusted and the amount of the thermoplastic viscoelastic material can be adjusted easily. Suitable for making large type dampers.

In the method for manufacturing the sandwich type damper for damping of the present invention, the viscoelastic material after lamination molding has a planar shape having at least two corner portions, and the corner portions are formed into two spacer members. It is preferable that the protruding through-holes are provided at least at one corner of the filling space.

With this structure, the spacer can be formed into a simple shape, can be manufactured easily and at low cost, and residual air and excess molten viscoelastic material can be discharged from the filling space to the outside more quickly. . The protruding through-hole may be formed in the spacer itself, but since it easily causes clogging, it should be formed in the abutting part of the spacer member so that the protruding viscoelastic material can be easily removed. Is preferred.

In the case of the damper of the present invention, since the applicable range is wide and the spacer can be formed into a simple prismatic shape,
The planar shape of the viscoelastic material is preferably square or triangular.

In the above invention, the excess amount ΔV of the thermoplastic viscoelastic material is preferably 0 <ΔV ≦ 0.3V.

According to this embodiment, the amount of extra viscoelastic material to be discharged to the outside of the space for filling the viscoelastic material can be suppressed below a certain level. ΔV is 0.02V ≦ ΔV ≦ 0.1
5V is more preferable because it is possible to surely avoid insufficient filling and at the same time ensure that the excess amount is excessive.

It is preferable that the longitudinal dimension and the lateral dimension or the diameter dimension of the through hole are usually 10 mm or less. If the through holes are too large, the liquid of viscoelastic material will be discharged more than necessary,
This is because the internal pressure is not applied during compression and a large air pocket tends to occur.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION The viscoelastic material used for manufacturing the damper of the present invention has an equivalent damping coefficient (shear elastic modulus × damping rate) at 20 ° C., a frequency of 3 Hz, and a deformation amount of 50%. And frequency 3Hz and shape factor (shear area x shear interval)
It is preferable to use a material having a value divided by the product of 0.2 or more.

The thermoplastic viscoelastic material exhibits substantially no rigidity or vibration damping property under static changes, but dynamic changes (0.
In a vibration of 1 to 10 Hz), rigidity and vibration damping properties are exhibited, and a material having a large vibration damping ratio in the operating temperature range (usually in the range of 0 to 40 ° C. at room temperature) is preferable, and the damping ratio (heq) A material having ≈ (1/2) × tan δ of 20% or more, preferably 30% or more is used.

As the above-mentioned viscoelastic material, known thermoplastic viscoelastic materials can be used without limitation. As the thermoplastic viscoelastic material, there are a high vinyl content styrene-isoprene block copolymer and its hydrogenated product, a polymer block containing isobutylene as a main monomer component and a polymer block containing no isobutylene as a main component. Block copolymer,
Specific examples thereof include thermoplastic block copolymers such as styrene-isobutylene-styrene triblock copolymer (see JP 2001-288329 A).

As the thermoplastic viscoelastic material, at least one selected from natural rubber, isoprene rubber, butylene rubber, SBR, NBR, EPDM, polyurethane, silicone rubber, butadiene rubber, chloroprene rubber and the like is used. It may be a composition. Further, the thermoplastic thermoplastic block copolymer and the unvulcanized rubber may be used in combination.

If desired, additives or fillers may be added to the above-mentioned thermoplastic viscoelastic material to adjust its properties to obtain a more preferable viscoelastic body. Examples of the additives include tackifying resins, plasticizers, stabilizers, pigments, lubricants, flame retardants and the like.

The tackifying resin has an effect of shifting the glass transition temperature (Tg) of the polymer constituting the thermoplastic viscoelastic material to the high temperature side, and the plasticizer has the effect of shifting it to the low temperature side. It is an important additive.

The tackifying resin has a number average molecular weight of 30.
0 to 3000, a low molecular weight resin having a softening point of 60 to 150 ° C. based on the ring and ball method defined in JIS K 2207, which is a rosin or its derivative, a polyterpene resin, an aromatic modified terpene resin, and hydrogenation thereof. Polymer, terpene phenol resin, coumarone / indene resin, aliphatic petroleum resin, alicyclic petroleum resin and hydrogenated polymer thereof, aromatic petroleum resin and hydrogenated polymer thereof, aliphatic aromatic copolymer system Examples thereof include petroleum resins and hydrogenated polymers thereof, dicyclopentadiene-based petroleum resins and hydrogenated polymers thereof, and low molecular weight polymers of styrene or substituted styrene. The type and addition amount of these resins depend on the glass transition temperature of the polymer constituting the thermoplastic viscoelastic material.
It is preferable to select and add in the range of 15 ° C to 15 ° C.

As the plasticizer, petroleum-based process oil such as paraffin-based process oil, naphthene-based process oil or aromatic process oil, dibasic acid dialkyl ester such as dibutyl phthalate, dioctyl phthalate or dibutyl adipate, Examples are low molecular weight liquid polymers such as liquid polybutene or liquid polyisoprene.

The thermoplastic viscoelastic material is a copolymer and an additive,
The filler and the like are kneaded using a known roll, Banbury mixer, kneader, and extruder, and formed into a sheet having an appropriate thickness using a calendar or an extruder and used.

The hard plate used for manufacturing the damper of the present invention is usually a metal plate of Fe, SUS, Al, Cu or the like, a hard plastic plate of PVC, PP, PE, FRP, acrylic resin, engineering plastics or the like. ,
Plywood, fiber reinforced plastic (FRP), etc., and a plate that combines metal and other materials with a thickness of 1 to 10 m
A robust plate material having a size of about m is exemplified. It is a preferred embodiment that the viscoelastic material bonding surface of the hard plate is subjected to surface roughening treatment by blasting or sandpaper, and application of a primer, an adhesive or the like, if necessary, to increase the adhesive strength.

A method of manufacturing the damper according to the present invention will be described with reference to a preferred embodiment. In the following embodiments,
Manufactures a sandwich type damper for vibration control that is used to improve the earthquake resistance of structures related to civil engineering against vibrations due to earthquakes, wind, traffic, etc.

<First Embodiment> FIG. 16 shows the first embodiment.
Description will be made based on an example in which a damper having a shape shown in (a) and (b) is manufactured. The damper has a sandwich structure in which the thermoplastic viscoelastic material 3A having a rectangular planar shape is laminated in layers between the plate surfaces of the hard plates 1A and 2A whose plate surfaces face each other. This damper is a hard plate 1
The viscoelastic material 3A fixes vibrations applied to the structure when an earthquake occurs by being fixed to the structure by screwing the mounting holes GA and GB formed at the base ends of A and 2A. Deforms and absorbs to exert seismic resistance. The size of this kind of damper is not particularly limited and may be appropriately set depending on the application, but is usually 5 cm in length.
~ 30 cm, width 5 cm ~ 200 cm, thickness 0.5 cm ~
The size is about 10 cm. In addition, the thermoplastic viscoelastic material 3A
Usually has a thickness of about 0.2 cm to 5 cm.

An example of the damper manufacturing process is as follows. 1) Spacer member setting step As shown in FIGS. 1A and 1B, the thermoplastic viscoelastic material 3A is formed on the plate surface of the hard plate 1A in which the mounting holes GA are pre-drilled.
Of the spacer member P so that the filling space S1 of
1a to P1d are placed at appropriate intervals. The example shown here is an example in which a plurality of spacers are arranged at intervals and the through holes are formed at the intervals. The space S1 for filling has a rectangular planar shape according to the shape of the thermoplastic viscoelastic material 3A, and the spacer member P is formed so that four protruding through holes H1a to H1d are formed between each spacer member.
1a to P1e are provided. The thickness of the spacer member is set by the thickness of the thermoplastic viscoelastic material 3A, and the width is not particularly limited as long as it does not deform at the time of compression, but in the manufacture of a general damper, the portion sandwiched between the upper and lower hard plates is used. The width is preferably about 1 mm to 10 mm.

Further, the size and shape of the spacer members P1a to P1e are adjusted so that the through holes H1a to H1c are through holes having a rectangular cross section with a vertical dimension and a horizontal dimension of 1.5 mm or more. Air may be discharged to the other through holes H1d. For example, the vertical dimension is 1.5 mm or more, and the horizontal dimension is 0.
The through hole is adjusted to have a rectangular cross section in the range of 5 mm or more and less than 1.5 mm.

In the example shown in FIG. 1, the plan-view shape of the viscoelastic material is rectangular and has four corners. The protruding through holes H1a to H1c are all provided at three corners of the rectangular filling space S1. By providing the protruding through holes at all corners, it is possible to more effectively and effectively prevent the occurrence of air pockets.

When disposing the spacer, FIG.
Frame material 2 that fits and positions each spacer shown in
It is preferable to use 0 because the spacer disposition work can be performed easily and reliably.

When the spacer member has a cross-sectional shape having a width protruding from the hard plate, it is taken along line XX of FIG.
The shape may be as shown in FIG. 2, which shows the cross-sectional shape of the portion. In this case, w is preferably about 1 to 10 mm.

2) Step of charging thermoplastic viscoelastic material As shown in FIGS. 3A and 3B, the spacer member P1
Sheet-like thermoplastic viscoelastic materials Q1a and Q1b having different widths are charged to the filling space S1 on the inside of a to P1d in a somewhat excess amount theoretically necessary. Thermoplastic viscoelastic material Q
Excessive amounts of 1 and Q2 are thermoplastic viscoelastic materials Q1a and Q1.
1b may be used by cutting it out from a sheet of thermoplastic viscoelastic material, and it may be one that has been extruded in the previous production,
It is also possible to use scraps of sheets.

The thermoplastic viscoelastic material has a volume of 0 <ΔV ≦.
The voltage is applied so as to be 0.3 V, but in practice, it is convenient to measure the density of the material, measure the weight, and apply.

3) Melting / pressurizing step of thermoplastic viscoelastic material As shown in FIG. 4, the hard plate 2A is arranged upward with the plate surface of the hard plate 2A facing the spacer members P1a to P1d. , 2A, the spacer members P1a to P1d are set so that the space S1 for filling the viscoelastic material is formed between the plate surfaces of the thermoplastic viscoelastic material Q1.
A and Q1b are melted by heating and pressed together with the hard plates 1A and 2A.

The flow starting temperature of the thermoplastic viscoelastic material varies depending on the material, but is 70 to 200 ° C, and the heating temperature at the time of pressurization is 100 to 250 ° C. Pressurization is 3 MPa
(About 30 kg / cm ² ) or less, preferably 0.1 to ² M
It is preferable to carry out at a pressure in the range of Pa (about 1 to 20 kg / cm ² ) because a manufacturing apparatus, particularly a pressing machine, can be used simply and at low cost.

At the same time that the viscoelastic material melted due to the pressurization quickly spreads to every corner of the filling space S1, the residual air in the filling space S1 is pushed out from the through holes H1a to H1d, and at the same time, excess As shown in FIG. 5, the viscoelastic material of the filling space S1 is filled from the protruding through holes H1a to H1c.
It is discharged to the outside. By cooling, the viscoelastic material is solidified, and the lamination molding of the thermoplastic viscoelastic material 3A with the hard plate is completed.

Upon pressurization, as shown in FIG. 4, it is preferable to pressurize through a pressing jig 5 having a surface shape substantially similar to that of the thermoplastic viscoelastic material 3A to be molded, because the molding can be carried out smoothly. .

As a method of heating the thermoplastic viscoelastic body to a molten state, in addition to the method of heating and compressing using the above-mentioned hot press, the following method can be adopted.

A) The hard plates 1A and 2A and the spacer members P1a to P1d are heated in advance in an oven or the like to a temperature higher than the melting temperature of the thermoplastic viscoelastic body, and the heat is used to heat and melt the plastic viscoelastic body. , A method of compressing with an ordinary press. b) A method in which a high-frequency induction heating device is attached to a pressing machine, and an iron plate, a stainless plate or the like is used as a hard plate for heating and compression.

4) Finishing Step After the thermoplastic viscoelastic material 3A has been molded, it is taken out from the hot press 4, the spacer members P1a to P1d are removed, and the burrs are removed to complete the damper as shown in FIG.

According to the first embodiment described above, the following various useful effects are achieved.

First, the excessive amount of the thermoplastic viscoelastic materials Q1a and Q1b is first charged into the space S1 for filling the viscoelastic material, and the necessary amount of the viscoelastic material is always fed, so the amount of the viscoelastic material is insufficient. At the same time, the residual air in the filling space S1 is also discharged from the through holes H1a to H1d, and air cannot be accumulated in the viscoelastic material filling space S1. As a result, the molding failure of the viscoelastic material can be avoided. Thermoplastic viscoelastic material Q1
Since a and Q1b are once melted and integrated, the layered thermoplastic viscoelastic material 3A is molded as a seamless single piece even if a plurality of raw material pieces are used. Further, since the solid viscoelastic material is put into the filling space, it is not necessary to provide a special seal for preventing liquid leakage.

Further, unlike the thermosetting type which requires curing, the thermoplastic viscoelastic material is filled with layers (burrs) and scraps discharged to the outside of the filling space and further into the filling space. It is also possible to recycle (reuse) a small amount, so it is possible to avoid loss of viscoelastic materials and generation of waste materials.

According to the present invention, even if the size of the space S1 for filling the viscoelastic material becomes large, it is possible to easily cope with it by adjusting the shape and size of the spacer member and adjusting the amount of the thermoplastic viscoelastic material charged. It is also suitable for making type of dampers.

In the step of charging the thermoplastic viscoelastic material of the first embodiment, instead of charging the sheet-shaped thermoplastic viscoelastic materials Q1a and Q1b having different widths, as shown in FIG.
As shown in, the large and small thermoplastic viscoelastic materials Q2a and Q2b thicker than the thickness of the filling space S1 are loaded side by side,
As shown in FIG. 7B, large and small thermoplastic viscoelastic materials Q3a and Q3b having different heights of the filling space S1 may be placed side by side.

According to the manufacturing method of the first embodiment,
As shown in FIG. 8, a damper having a plurality of thermoplastic viscoelastic materials 3A in which different thermoplastic viscoelastic materials 3A are laminated can also be manufactured.

<Second Embodiment> In the second embodiment, an example of manufacturing the damper shown in FIG. 9 will be described. The damper of FIG. 9 has hard plates 1B and 2B whose plate surfaces face each other.
In addition to the sandwich structure in which the thermoplastic viscoelastic material 3B having a planar shape of a substantially right triangle between the plate surfaces is filled in layers, the mounting portions of the hard plates 1B and 2B are bent outward at a right angle. Others have substantially the same configuration as the damper of the first embodiment.

In the example of the second embodiment, in the setting step of the spacer member for forming the space for filling the viscoelastic material, as shown in FIG. 10, the thermoplastic viscoelastic material is formed on the plate surface of the hard plate 1B. Spacer members P2a to P2d are placed at appropriate intervals so that the filling space S2 is formed. The space S2 for filling has a plane shape of a substantially right triangle (triangular shape) according to the shape of the thermoplastic viscoelastic material 3B, and the spacer member P2a so that four through holes H2a to H2d are provided between the respective members. ~ P2d are provided. Further, the dimensions and shapes of the spacer members P2a to P2d are such that the through holes H2
a and H2b are through holes having a rectangular cross section with a vertical dimension and a lateral dimension of 1.5 mm or more, and the through holes H2c and H2d have a vertical dimension of 1.5 mm or more, but a lateral dimension of 0.5 mm or more. It is selected to be a through hole having a rectangular cross section in the range of less than 5 mm. Also, the through holes H2a, H
2b is a through hole H at two corners on both sides of the hypotenuse.
2c and H2d are respectively provided at the middle positions of the orthogonal sides.

In the step of charging the thermoplastic viscoelastic material, as shown in FIG. 11, triangular sheet-shaped thermoplastic viscoelastic materials Q4a and Q4b having different widths are introduced to the space S2 for filling inside the spacer members P2a to P2d. Add a little more than theoretically required.

Thereafter, the damper shown in FIG. 9 is obtained by a process substantially similar to that of the first embodiment described above.

According to the manufacturing method of the second embodiment,
As shown in FIG. 12, a thermoplastic viscoelastic material 3C having an exact right-angled triangle plane shape between the plate surfaces of the hard plates 1C and 2C.
A damper having the same configuration as the damper shown in FIG. 9 except that the dampers are filled in layers can be manufactured in substantially the same manner.

According to the manufacturing method of the second embodiment,
As shown in FIG. 13, the damper of FIG. 9 except that the thermoplastic viscoelastic material 3D having a planar shape of a substantially right triangle with an oblique side being an arc shape is filled in layers between the plate surfaces of the hard plates 1D and 2D. A damper having the same structure as the above can be manufactured in substantially the same manner.

Further, according to the manufacturing method of the second embodiment, a damper having the same structure as the damper shown in FIG. 9 is substantially the same except that the hard plates 1E and 2E are flat plates that are entirely flat without bending. Can be manufactured.

<Other Embodiments> (1) In the above embodiment, all the through holes had a square cross section, but the through holes may have a circular cross section or may have a square cross section. Those having a circular cross section and those having a circular cross section may be mixed.

(2) In the above-described embodiment, the through holes are formed by setting the spacer members at intervals, but in the first embodiment, for example, FIG.
As shown in (a) and (b), through holes H3a to
A filling space S1 is formed by using two spacer members P3a having H3c formed therein and two spacer members P3b having no through holes, or as shown in FIGS. 16 (a) and 16 (b), A part of the upper side or the end side is cut away to form a through hole H
The filling space S1 may be formed by using two spacer members P4a provided with 4a to H4c and two spacer members P4b having no through holes. In these forms, the spacer members can be arranged without a gap, so that the spacer members can be easily set and the workability is improved.

(3) In the above embodiment, two thermoplastic viscoelastic materials are charged, but the number of thermoplastic viscoelastic materials may be one, or three or more. Good.

(4) In the above embodiment, some corners were not provided with through holes in the filling space, but protruding through holes may be provided at all corners in the filling space.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a setting process of a spacer member in the first embodiment.

FIG. 2 is a cross-sectional view showing another example of the cross-sectional shape of the spacer.

FIG. 3 is an explanatory view showing a step of introducing a thermoplastic viscoelastic material according to the first embodiment.

FIG. 4 is an explanatory view showing a melting / pressurizing step of the thermoplastic viscoelastic material according to the first embodiment.

FIG. 5 is an explanatory diagram showing a liquid release state of the thermoplastic viscoelastic material according to the first embodiment.

FIG. 6 is a perspective view showing a damper obtained in the first embodiment.

FIG. 7 is an explanatory diagram showing an example of a situation in which another thermoplastic viscoelastic material is introduced.

FIG. 8 is a schematic view showing another damper that can be manufactured by the manufacturing method of the first embodiment.

FIG. 9 is a perspective view showing a damper manufactured in the second embodiment.

FIG. 10 is an explanatory view showing a spacer member setting step in the second embodiment.

FIG. 11 is an explanatory view showing a step of introducing a thermoplastic viscoelastic material according to the second embodiment.

FIG. 12 is a schematic view showing another example of the damper that can be manufactured by the manufacturing method of the second embodiment.

FIG. 13 is a schematic view showing another example of the damper that can be manufactured by the manufacturing method of the second embodiment.

FIG. 14 is a schematic view showing another example of the damper that can be manufactured by the manufacturing method of the second embodiment.

FIG. 15 is an explanatory view showing another setting example of the spacer member in the first embodiment.

FIG. 16 is an explanatory view showing another setting example of the spacer member in the first embodiment.

FIG. 17 is a schematic view showing an example of a sandwich type damper for damping according to the present invention.

[Explanation of symbols]

1A to 1E ... Hard plate 2A to 2E ... Hard plate 3A-3D ... Thermoplastic viscoelastic material H1a to H4c ... through holes P1a to P4b ... Spacer member Q1a-Q4b ... Thermoplastic viscoelastic material S1, S2 ... Space for filling

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3J048 AA01 BA08 BB03 BD07 BD08                       DA01 EA38                 3J059 AD05 BA43 BB03 BB07 BC07                       BC12 BD01 BD05 BD09 CB09                       EA03 EA13 GA42                 4F204 AA45 AA46 AA47 AD03 AD05                       AD06 AD24 AE07 AG02 AG03                       AH15 FB01 FB11 FB22 FF01                       FF05 FF23 FF47 FN12

Claims (3)

[Claims] 1. A method for manufacturing a sandwich-type vibration damping damper, in which viscoelastic materials are laminated in layers between plate surfaces of hard plates whose plate surfaces face each other, and the method comprises: A spacer member is set so that a space for filling the viscoelastic material is formed, and a plurality of through holes that penetrate between the inside and the outside of the filling space are provided, and the plurality of through holes are at least One is a protruding through hole having a vertical dimension and a lateral dimension of 1.5 mm or more, and a thermoplastic viscoelastic material having a volume V + ΔV (V is the volume of the filling space, ΔV is an excessive amount) is filled in the filling space. A method for manufacturing a sandwich type vibration damping damper, characterized in that after heating, the viscoelastic material is molded by compressing the hard plate together with the hard plate, and simultaneously bonding and laminating with the hard plate. 2. The laminating-molded viscoelastic material has a planar shape having at least two corners, the corners being formed by two spacer members, and at least the corners of the filling space. 2. The method for manufacturing a sandwich type vibration damping damper according to claim 1, wherein the protruding through hole is formed at one location. 3. The excess amount ΔV of the thermoplastic viscoelastic material is
The method for manufacturing a sandwich-type vibration damping damper according to claim 1, wherein 0 <ΔV ≦ 0.3V.