CN1138842C - Glass adhesive for vehicle and method for installing the glass on vehicle body - Google Patents

Abstract

The invention discloses a glass adhesive for vehicles, which comprises urethane material added with 2-8% (weight) of thermoplastic resin. The thermoplastic resin may be polyester resin. The adhesive is heated to a temperature of 60° C. to 80° C. and then coated around the windshield. Use the empty suction cup to pick up the windshield and press it against the window frame of the vehicle body. Subsequently, the adhesive was cooled by blowing it with air at a temperature of 20°C. The adhesive is forcibly cooled to 50° C. or lower in a short period of time, thereby exhibiting temporary holding properties.

Description

Vehicle glass binding agent and the method that this glass is installed on car body

The present invention relates to a kind of binding agent around installation weatherstrip window glass or afterbody window glass on the car body and method that this class glass is installed on car body with this binding agent of being used for.

Describe below at the typical method that heavier weatherstrip window glass or afterbody window glass (below be called sheet glass) are installed on the car body.

Annular is linked to each other with sheet glass with one of female part with the male member of cast secure component, and another fastening piece with energy snap-lock one fastening piece links to each other with the window-frame that sheet glass is installed in wherein simultaneously.Subsequently binding agent is coated on sheet glass or the window-frame, by hand sheet glass is fixed on tightly on the window-frame to determine its installation site then.If it is correctly localized finding sheet glass, the attached fastening piece of a fastening piece on the sheet glass on will the snap-lock window-frame.This situation remains to the binding agent hardening.In case the binding agent hardening, confining force or cohesive strength by binding agent remain on sheet glass on the car body.This means that annular and cast secure component are a kind of being used for interim sheet glass to be remained on the car body temporary fastener up to the sealing agent hardening.Also pin and anchor clamps can be used as temporary fastener.

Yet, use temporary fastener, can produce the problem of enumerating below as annular and cast fastening piece:

(1) be difficult to make manual sheet glass being fixed on tightly on the window-frame determining its installation site and to make the sequence of operations automatization of the attached fastening piece on the fastening piece snap-lock window-frame on the sheet glass subsequently of carrying out, and so make these operations also finish at present by craft; With

(2) temporary fastener, hindered the replacement of sheet glass as annular and cast fastening piece.

Being that the inventor recognizes the pre-hardening cohesive strength by abundant increase binding agent in the research that overcomes the above problems, sheet glass might be directly installed on the window-frame, and temporary fastener that need not be traditional.Continue research and correlation test and produced positive effect.This has just caused the present invention.

According to first aspect of the present invention, a kind of vehicle glass binding agent is provided, it comprises the urethane base-material that is added with 2-8% (weight) thermoplastic resin.

So the binding agent of preparation has the interim confining force that has increased.As a result, only by binding agent temporarily fastening, just sheet glass can be directly installed on the window-frame as fastening piece and anchor clamps.As a result, use automatic gear can more effectively carry out the fitting operation of sheet glass with automatization ground.And, can more easily replace sheet glass owing on sheet glass and window-frame, there is not interim secure component.

Desired thermoplastic resin is a vibrin.Vibrin is favourable, and this is because it has 50-70 ℃ fusing point, and it does not need superheated and be easy to handle.

According to second aspect of the present invention, a kind of weatherstrip window glass of car or method of afterbody window glass of installing on car body is provided, and this method may further comprise the steps: coat binding agent (this binding agent by join 2-8% (weight) thermoplastic resin in the urethane base-material and be heated to 60 ℃ of-80 ℃ of formation) around glass or car body window-frame; Vacsorb glass also pressurizes to it facing to window-frame; Use the air cooling binding agent.

In the explanation embodiment, being used to cool off the temperature that the air of binding agent has is 20 ℃.By being blown into air, binding agent is forced to be cooled to 50 ℃ or lower at short notice, therefore shows interim glass hold facility.

Now only certain preferred technical scheme of the present invention is described particularly by the mode of embodiment and with reference to accompanying drawing, wherein:

Fig. 1 shows the skeleton view that windshield glass is installed on car body according to the present invention;

Fig. 2 is the sectional view that the line 2-2 along Fig. 1 is cut open;

Fig. 3 shows that binding agent of the present invention keeps the curve of performance temporarily;

Fig. 4 is the curve that shows binding agent tensile strength properties of the present invention; With

Fig. 5 A and Fig. 5 B show to use binding agent of the present invention how windshield glass to be installed in sketch on the car body.

Following description in fact only is demonstration, and does not mean that the restriction to the present invention or its application or purposes.

With reference to Fig. 1, vehicle 10 comprises and is installed in by right front post and left front post 12,14, top 16 and covers the previous section of the front windshield 20 of 18 opening parts that limit.

Refer now to Fig. 2, will be connected around the windshield glass 20 by on 16 the formed window-frame 22 in front of top by binding agent 24.

Binding agent 24 is described below particularly.

Binding agent 24 mainly is made up of the urethane base-material that is added with 2-8% (weight) thermoplastic resin.Thermoplastic resin is a kind of crystalline resins, and its effect is the creep resistance that increases binding agent 24.Thermoplastic resin is crystallization and have the vibrin of 50 ℃ of-70 ℃ of fusing points rapidly preferably.If the binding agent crystallization is slower, so just need pressurization to increase up to the confining force of binding agent to support windshield glass 20.The problem that this is in the prior art to be run into.Therefore on the contrary, if the binding agent crystallization is rapid, confining force increases at short notice, and windshield glass can remain on the car body, and need not any interim fastening, as annular and cast fastening piece.Also have,, just need large-scale heating installation, therefore consume a large amount of heat energy if fusing point is too high.So, wish that fusing point is 50 ℃-70 ℃, it is a little more than normal temperature.

Referring now to Fig. 3, this figure shows that binding agent of the present invention keeps the curve of performance temporarily.In this curve, transverse axis represents to be added to the add-on (%) of the thermoplastic resin in the urethane, and Z-axis represents to keep performance or confining force (g/cm temporarily ²).

According to following method, measure windshield glass, promptly make glass remain on the interim performance that keeps of instantaneous acquisition of back bonding surface unit surface on the car body with the binding agent that is clipped between windshield glass and the car body by pressurization.

In curve, (real circle) expression observed value.Interim confining force is about 7g/cm when as seen, using urethane separately ²When urethane was used as base-material and adds 2% thermoplastic resin, its interim confining force that has was 22g/cm ²When the thermoplastic resin that adds 4% in the urethane base-material, final interim confining force is 42g/cm ²Equally, add 10% thermoplastic resin and produce 68g/cm ²Interim confining force.This means that interim confining force increases with the thermoplastic resin add-on with being directly proportional.

The actual now heavily about 1kg-17kg of windshield glass that uses.The side this windshield glass is attached on the car body, the bond area that needs is approximately 350cm ², in order only to support windshield glass, consider the connection angle of windshield glass with binding agent, need interim confining force to be at least about 18g/cm ²In actual applications, for security consideration, wish that minimum interim confining force is 20g/cm ²As seeing in the curve,, can obtain 20g/cm by adding 2% or higher thermoplastic resin ²Interim confining force.

Below with reference to Fig. 4, the tensile strength of binding agent of the present invention has been represented on this figure diagrammatic ground.In curve, transverse axis represents to add the add-on (%) of thermoplastic resin in urethane, and Z-axis is represented the tensile strength kg/cm of binding agent ²

After using seven days, measure the tensile strength of binding agent.Tensile strength provides with the unit that is different from interim maintenance performance, but equals to keep about 1,000 times of performance temporarily.

In curve, mouthful (open squares) expression observed value, in the time of therefrom can seeing independent use urethane, tensile strength is approximately 56kg/cm ²When urethane was used as base-material and add 6% thermoplastic resin, tensile strength was 48kg/cm ²The thermoplastic resin of adding 8% produces 46kg/cm ²Tensile strength.When the thermoplastic resin that adds 10% in urethane, the tensile strength that has is 30kg/cm ²This means that tensile strength reduces with the thermoplastic resin add-on with being directly proportional.

The binding agent cohesive strength is big more, and effect is just good more.Consider that from reality desired minimum intensity is 40kg/cm ²Shown in curve, be restricted to 8% by add-on with thermoplastic resin, can improve this intensity.

From the discussion of front, obviously find out, can obtain desired interim maintenance performance and tensile strength by in the urethane base-material, adding 2-8% (weight) thermoplastic resin.

Below, discuss with binding agent of the present invention windshield glass is installed in mode on the vehicle.

Fig. 5 A and 5B show how windshield glass is installed on the car body.

In Fig. 5 A, with the binding agent 24 that is heated to 60 ℃ of-80 ℃ of temperature be coated in windshield glass 20 around.Use the suction cup 28 that links to each other with automatic gear arm (not shown) to draw windshield glass 20 then, it is moved on to the front portion of vehicle.And the pressurization remain on the window-frame, shown in arrow 1,1.

In Fig. 5 B, brush on binding agent 24 by the air of air mouth (not shown) with 20 ℃.As a result, binding agent 24 is forced to be cooled to be lower than 50 ℃ temperature at short notice, shows interim maintenance performance as shown in Figure 3 thus.Then, remove suction cup 11, then filler rod 26 is installed in pressurization.

So arrange, needn't worry in fitting operation windshield glass 20 unexpected landing from the car body.Owing to the passing in time of binding agent cohesive strength increases, windshield glass 6 can not be shifted in operating process in addition.

Only the mode with embodiment has provided above-mentioned installation method, and other installation methods also are possible.For example, binding agent 8 optionally can be coated on the window-frame 7, and windshield glass 20 pressurizations are remained on the window-frame.

The skilled personnel in present technique field can recognize easily that the present invention can be used for the installation of afterbody window glass.

Clearly, under the inspiration of above thinking, can make various little changes and improvements to the present invention.Therefore should understand in the appended claims scope that the present invention can implement with the mode beyond the specific description.

Claims (5)

1. method that is used for fixing weatherstrip window glass on the car body and/or afterbody window glass peripheral edge may further comprise the steps:

Binding mixtures is coated in the peripheral edge of described glass or described car body window-frame, and the thermoplastic polyester of described binding mixtures by adding 2-8% weight is to as in the urethane of base-material and be heated to 60 ℃-80 ℃ temperature and form;

Drawing described glass also is pressed into this glass in the described window-frame; With

With the described binding mixtures of air cooling.

2. according to the process of claim 1 wherein that described cooling step is to be undertaken by brushing described binding mixtures with 20 ℃ air.

3. according to the method for claim 1, further comprising the steps of:

Stop suction operation to unclamp described glass; With

Filler rod is inserted in the slit between described glass and the described window-frame.

4. according to the process of claim 1 wherein that described thermoplastic resin is crystalline.

5. according to the process of claim 1 wherein that the suction cup by being connected on the robot arm applies described magnetism, and described window glass is pressed in the described window-frame by this robot arm.

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