JP5089675B2 - Window frame - Google Patents

Description

  The present invention relates to a window frame formed by joining a plurality of synthetic resin frame members to each other, and more specifically, a plurality of windows composed of a main layer and a surface layer laminated on the surface of the main layer. It is related with the window frame formed by mutually joining these synthetic resin frame members.

  As a synthetic resin frame member constituting the window frame, as disclosed in Patent Documents 1 and 2 below, a main layer and a surface layer laminated on a required surface of the main layer (surface exposed outdoors and indoors) A frame member made up of is widely used in practice. In a typical example, the main layer is a polyvinyl chloride resin and the surface layer is an acrylic resin, which is conveniently formed by a coextrusion method. The surface layer is usually given a suitable color and / or pattern.

  When the window frame is constructed from the frame member, as disclosed in Patent Documents 2 and 3 below, four frame members having a required length are joined together to form a rectangular frame. For joining the two frame members, the lower frame member or the upper frame member extending in the horizontal direction and the left frame member or the right frame member extending in the vertical direction, the end to be joined is inclined at, for example, 45 degrees. This is accomplished by cutting into inclined edges that are inclined with, and heat-melting the inclined edges and pressing them together, thus welding the inclined edges.

JP 2001-140543 A Japanese Patent No. 2529424 JP 2001-220958 A

  Thus, when joining the ends of the frame member composed of the main layer and the surface layer to form the window frame, when the melted inclined ends of the frame members to be joined are pressed against each other, The welding burrs flow out from between the back surfaces of the main layer (the surface on which the surface layer is not laminated), and also from the surface layers. Weld burrs that flow out between the back surfaces of the main layer are not particularly problematic, but weld burrs that have flowed out from the surface layers will be exposed as they appear, so that the excision tool is in the form only after cooling. It is excised from the joint surface using. As is well known to those skilled in the art, when the welding burr is removed, the main layer is exposed between the surface layers at the removed site, and the appearance of the joint is impaired. Therefore, the appearance of the excised site is usually repaired by applying a so-called cosmetic treatment to the excised site. Such repair is remarkably cumbersome and requires skill, thus greatly increasing manufacturing costs.

  The present invention has been made in view of the above-mentioned facts, and its main technical problem is to avoid or sufficiently suppress the exposure of the main layer at the site where the welding burr has been excised, and to prevent the welding burr without performing a cosmetic treatment. The object is to provide a new and improved window frame which can make the appearance of the excised site sufficiently good and thus reduce the manufacturing costs.

As a result of diligent examination and experiment, the present inventors have regulated the width of the welding burr flowing out from the surface layer to a sufficiently small width on the surface layer surface, and after removing the welding burr, excising the welding burr from the surface layer. However, if the main part is cooled while maintaining the mutual pressing of the ends, it is avoided or sufficiently suppressed that the main layer is exposed between the surface layers, and the appearance of the part where the welding burrs are removed without applying a cosmetic treatment is obtained. It has been found that it can be made sufficiently good.

That is, according to the present invention, a plurality of synthetic resin frame members each composed of a main layer and a surface layer laminated on the surface of the main layer are mutually connected as a window frame for achieving the main technical problem. In the window frame formed by joining,
The frame members are joined by (i) heating and melting ends to be joined to each other, pressing the melted ends against each other, and (b) maintaining the mutual pressing of the ends against each other. The width of the welding burr flowing out from the surface layer at the end is regulated to 0.2 to 0.6 mm on the surface layer surface, and (c) the welding burr is cut off from the surface layer after the welding burr is cooled. (D) is completed by cooling the main part of the end while maintaining the mutual pressing of the ends, and cutting the welding burr from the surface layer surface to cool the main part of the end. after, the fine recessed junction of the surface layer is formed is not subjected cosmetic treatment to the surface layer surface, it is provided a window frame, characterized in that.

Preferably, the welding burr is cooled by spraying cold air . The main layer is a polyvinyl chloride resin is 2 to 4mm thickness, the surface layer is conveniently in the range of acrylic resin is 0.1 to 0.6mm thick.

  In the window frame of the present invention, the exposure of the main layer at the site where the weld burrs are removed is avoided or sufficiently suppressed, and the appearance of the site where the weld burrs are removed is made sufficiently good without applying a cosmetic treatment. Manufacturing cost can be reduced.

The front view which shows a part of typical example of the window frame comprised according to this invention. Sectional drawing which shows a part of cross section of the lower frame member of the window frame of FIG. FIG. 2 is a simplified cross-sectional view showing one stage in frame member bonding for manufacturing the window frame of FIG. 1, that is, a state in which heated and melted ends are pressed against each other. The simplified sectional view which shows the other stage in frame member joining, ie, the state which controlled the width | variety of the welding burr | flash which flowed out from the surface layer to the width W on the surface layer surface. FIG. 6 is a simplified cross-sectional view showing still another stage in frame member bonding, that is, a state in which weld burrs flowing out from the surface layer are removed. FIG. 4 is a simplified cross-sectional view showing a state in which joining is completed by cooling a heated and melted end.

  Hereinafter, with reference to an accompanying drawing, the preferred embodiment of the window frame constituted according to the present invention is explained in full detail.

  FIG. 1 illustrates a portion of a typical window frame constructed in accordance with the present invention. The window frame generally indicated by numeral 2 is composed of a lower frame member 4, a left frame member 6, an upper frame member (not shown), and a right frame member (not shown), and is rectangular as a whole. A window glass 8 is fixed in the window frame 2. As clearly understood by referring to FIG. 2 showing a part of the cross-sectional shape of the lower frame member 4, the lower frame member 4 includes a main layer 10 and a surface layer laminated on a required surface of the main layer 10. 12. The main layer 10 is preferably made of polyvinyl chloride, and the surface layer 12 is preferably made of acrylic resin. In general, the thickness of the main layer 10 is preferably about 2 to 4 mm, and the thickness of the surface layer 12 is preferably about 0.1 to 0.6 mm. The left frame member 6, the upper frame member, and the right frame member also have the same cross-sectional shape as the cross-sectional shape of the lower frame member 4, and are composed of a main layer and a surface layer laminated on a required surface of the main layer.

  The left end of the lower frame member 4 extending in the horizontal direction is cut into an inclined end 4a with an inclination angle of 45 degrees, and the lower end of the left frame member 6 extending in the vertical direction may be 45 degrees. It is cut into the inclined end 6a. The inclined end 4a of the lower frame member 4 and the inclined end 6a of the left frame member 6 are joined by a unique frame member joining method. The right end of the lower frame member 6 and the lower end of the right frame member, the upper end of the left frame member 6 and the left end of the upper frame member, and the right end of the upper frame member and the upper end of the right frame member, respectively, The end 4a and the lower end of the left frame member 6, that is, the inclined end 6a are joined to each other in the same joining manner.

  3 to 6 illustrate a manner in which the inclined end 4a of the lower frame member 4 and the inclined end 6a of the left frame member 6 are joined by a unique frame member joining manner. In the illustrated frame member joining mode, first, the inclined end 4a of the lower frame member 4 and the inclined end 6a of the left frame member 6 are heated to about 240 to 265 ° C. and melted. The heating of the inclined end 4a and the inclined end 6a can be conveniently performed in a known manner, for example by bringing the inclined end 4a and the inclined end 6a into close contact with the heating plate. Then, as shown in FIG. 3, the heated and melted inclined end 4 a of the lower frame member 4 and the heated and melted inclined end 6 a of the left frame member 6 are pressed against each other. In FIG. 3, the melted resin portion is displayed with a large number of fine dots. When the heated and melted inclined end 4a and the heated and melted inclined end 6a are pressed against each other, the welding burr 14 is formed between the back surfaces of the main layer 10 (the back surface on which the surface layer 12 is not laminated) as shown in FIG. While flowing out, the welding burr 16 also flows out between the surfaces of the surface layer 12. The welding burr 16 flowing out from between the surfaces of the surface layer 12 contains not only the material constituting the surface layer 12 but also the material constituting the main layer 10.

Following the mutual pressing of the inclined end 4a and the inclined end 6a, as shown in FIG. 4, while maintaining the mutual pressing, the welding burr 16 that has flowed out from between the surfaces of the surface layer 12 is sufficient on the surface of the surface layer 12. To a narrow width W, that is , a width W of 0.2 to 0.6 mm . Such regulation is such that the regulating tools 18 and 20, which are formed with a knife edge whose upper surface of the tip portion is inclined toward the lower surface toward the tip and whose tip edge is sharp, are directed toward the welding burr 16 along the surface of the surface layer 12. It can be suitably realized by moving and approaching until the distance between the leading edges of the restrictors 18 and 20 reaches about 0.2 to 0.6 mm. The restrictors 18 and 20 are conveniently formed from a refractory metal. If the width W is excessive, the resin of the main layer 10 tends to be exposed between the surface layers 12 at the joint. On the other hand, it is also intended to make the W substantially zero by bringing the leading edges of the restrictors 18 and 20 into contact, but in this case, the leading edges of the restrictors 18 and 20 are within a relatively short time. Will be damaged.

  Next, while maintaining the pressing between the inclined end 4a and the inclined end 6a, the main parts of the heated and melted inclined ends 4a and 6a are not cooled, and the welding burr 16 flowing out from between the surfaces of the surface layer 12 is removed 55. It is cooled to about 75 ° C., and the welding burr 16 is removed from the surface of the surface layer 12 as shown in FIG. Cooling of the welding burr 16 can be conveniently performed by, for example, injecting cold air to the welding burr 16. The cooled welding burr 16 is a cutting tool (not shown) only having a sharp knife edge corresponding to the gap between the leading edges of the two regulating tools 18 and 20, and the leading edge of the cutting burr 16 is formed on the surface layer 12. By moving in the direction perpendicular to the paper surface in FIG. 5 by being positioned on the same plane as the surface of the substrate, it can be removed with sufficient precision as required.

Thereafter, the inclined end 4a and the inclined end 6a are cooled while maintaining the pressing between the inclined end 4a and the inclined end 6a, and thus the inclined end 4a and the inclined end 6a are joined. The inclined end 4a and the inclined end 6a may be naturally cooled at room temperature. According to the experience of the present inventors, the welding burr 16 is removed by cooling only the welding burr 16 without cooling the main parts of the inclined end 4a and the inclined end 6a, and then the main parts of the inclined ends 4a and 6a. Upon cooling and due to the shrinkage of the resin material by cooling, as shown in FIG. 6, but fine depressions 22 on the junction of the surface layer 12 is Ru is generated, constituting the main layer 10 on the bonding site on the surface layer 12 It has been found that the exposed resin material is avoided or sufficiently suppressed. Depression 22 produced is remarkable properly fine, usually can not be completely Admitting visually. Therefore, even if a so-called cosmetic process is not performed after joining, the joining portion between the inclined end 4a of the lower frame member 4 and the inclined end 6a of the left frame member 6 is sufficiently good.

2: Window frame 4: Lower frame member 6: Left frame member 10: Main layer 12: Surface layer 14: Welding burr 16: Welding burr 18: Restricting tool 20: Restricting tool 22: Fine depression

Claims (3)

In a window frame formed by mutually joining a plurality of synthetic resin frame members composed of a main layer and a surface layer laminated on the surface of the main layer,
The frame members are joined by (i) heating and melting ends to be joined to each other, pressing the melted ends against each other, and (b) maintaining the mutual pressing of the ends against each other. The width of the welding burr flowing out from the surface layer at the end is regulated to 0.2 to 0.6 mm on the surface layer surface, and (c) the welding burr is cut off from the surface layer after the welding burr is cooled. (D) is completed by cooling the main part of the end while maintaining the mutual pressing of the ends, and cutting the welding burr from the surface layer surface to cool the main part of the end. after, window frame but fine recessed junction of the surface layer is formed cosmetic process has not been applied to the surface layer surface, characterized in that.   The window frame according to claim 1, wherein the welding burr is cooled by spraying cold air. The window frame according to claim 1 or 2 , wherein the main layer is a polyvinyl chloride resin having a thickness of 2 to 4 mm, and the surface layer is an acrylic resin having a thickness of 0.1 to 0.6 mm.