JP6547893B1 - Repair method of thermoplastic resin member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of repairing a thermoplastic resin member for firmly joining a broken portion by embedding a heated joint at the broken portion and connecting the broken portion, and by appropriately changing the form of the joint, it is possible to join properly. In this repair method, it is easy to embed the heated connecting material at the broken portion so that the connecting material is not exposed on the surface of the thermoplastic resin member.
SOLUTION: An elongated metal material having high thermal conductivity while having flexibility to heat and melt a thermoplastic resin at a broken portion 1a and temporarily joining the broken portion 1a and bending it manually. The connection material 2 is formed by changing the form of the connection material 2 formed from the above, and the connection material 2 is installed so as to connect the breakage points 1a, and the connection material 2 is heated and embedded in the breakage points 1a. The resin material 3 for application which consists of a thermoplastic resin for applying on the surface of the above is heated and dissolved, and is applied on the surface of the broken portion 1a.
[Selected figure] Figure 6

Description

The present invention relates to a method of repairing a thermoplastic resin member for welding and repairing a broken portion of a thermoplastic resin member formed of a thermoplastic resin, such as a headlight portion and a bumper portion of an automobile. The present invention relates to a method of repairing a thermoplastic resin member for more firmly joining the broken part by embedding and connecting the heated connecting material to the broken part.

Conventionally, as a method of repairing a broken portion of a thermoplastic resin member such as a headlight portion or a bumper portion of an automobile which is broken due to a car accident or the like, the broken portion is adhered using various adhesives or A method of repairing a thermoplastic resin member has been practiced which heats, welds and repairs the broken part.

However, according to the above-mentioned repair method, the broken portions can not be joined with sufficient strength. Therefore, in the case of the headlight portion and the bumper portion of the automobile, the vehicle may break again relatively easily due to vibration or wind pressure caused by traveling of the automobile. Therefore, in the case of the headlights and bumpers of automobiles, it is necessary to replace the entire product even though only a part is broken due to breakage.

Therefore, conventionally, a method of repairing a thermoplastic resin member has been proposed which can join the broken portion more firmly by embedding and connecting a heated connecting material to the broken portion of the thermoplastic resin member. For example, the following proposals have been made.

That is, after a cloth-like fiber material having a heat resistant temperature higher than that of the thermoplastic resin is placed on a work made of a thermoplastic resin, the fiber material is directed from the surface side to the work by a pressing member in a heated state. A post-processing fiber embedding method is proposed characterized in that the fiber material is embedded in the work by pressing the fiber material into the work while pressing the fiber material while melting the surface of the work by the heat of the pressing member. (See, for example, Patent Document 1 below). In addition, in the repair method using the backing material to repair damaged parts of the resin parts of the vehicle body, the backing material is heated, the backing material is pressed against the resin parts, and the resin parts are melted by the heat of the backing material. There is also proposed a method of repairing a resin part characterized in that all or part of the backing material is embedded in the resin part (see, for example, Patent Document 2 below).

According to the method of repairing a thermoplastic resin member as described above, the heated connecting material is embedded in the fractured portion of the thermoplastic resin member and joined to connect the fractured portion relatively firmly. Since it is possible, it is possible to reduce the possibility that the broken portion will break again (see, for example, Patent Documents 1 and 2 below).

JP, 2007-196922, A JP, 2009-286294, A

However, while there are various modes in the mode of breakage of the thermoplastic resin member, the above-described conventionally proposed thermoplastic resin member repair method is characterized by using a fibrous member, a wave as the connecting member, and the like. In the case of using the above-mentioned member or the reticulated member, there is a problem that appropriate connection can not be performed by the connecting material of the form according to the form of the broken portion (for example, Patent Documents 1 and 2 above) See). Then, the 1st subject which this invention tends to solve is the repair method of the thermoplastic resin member which joins the said broken part by embedding and connecting the heated connection material to the broken part of a thermoplastic resin member. It is an object of the present invention to provide a method of repairing a thermoplastic resin member capable of appropriately changing the form of the connecting member to perform appropriate bonding.

Further, in the method for repairing a thermoplastic resin member conventionally provided as described above, when the heated connecting material is embedded in the fracture portion of the thermoplastic resin member, a material forming the thermoplastic resin member, etc. In some cases, the broken portion is difficult to melt, and it is difficult to embed the connecting member. As a result, there has been a problem that the repair takes time, or the broken portion can not be joined with sufficient strength. Then, the 2nd subject which this invention tends to solve is the repair method of the thermoplastic resin member which joins the said break location by embedding and connecting the heated connection material to the break location of the thermoplastic resin member. The method for repairing a thermoplastic resin member according to claim 1, wherein the time taken for the repair is shortened by making it easy to embed the heated connecting material at the broken part, and the broken part can be joined with sufficient strength. It is to provide.

And in the repair method of the conventionally provided thermoplastic resin members as described above, the connecting material may be exposed on the surface of the thermoplastic resin members. In this case, the thermoplastic resin member may deteriorate the appearance of the product in which it is used, or the connecting member may be exposed to rain wind to deteriorate and the broken portion may be broken again. The Then, the 3rd subject which this invention tends to solve is the repair method of the thermoplastic resin member which joins the said break location by embedding and connecting the heated connection material to the break location of the thermoplastic resin member. The connector is not exposed on the surface of the thermoplastic resin member, thereby maintaining the aesthetics of the product in which the thermoplastic resin member is used and degrading the connector. Providing a method of repairing a thermoplastic resin member that can prevent the

The present invention has been proposed to solve the above-mentioned problems, and has the following configuration. In the following, in order to assist in understanding the configuration of the present invention, the reference numerals and symbols shown in the drawings attached to the present application will be described together.

In the method for repairing a thermoplastic resin member according to claim 1, in the fracture portion (1a) of the thermoplastic resin member (1), the heated connecting material (2) is embedded in the fracture portion (1a) and connected. Relates to a method of repairing a member made of thermoplastic resin for joining the broken portion (1a), heating and melting the thermoplastic resin in the broken portion (1a), temporarily bonding the broken portion (1a), and manually An end portion of a connecting member (2) formed of an elongated metal with high thermal conductivity while being flexible to such an extent that it can be bent is bent to a broken portion (1a) that has been dissolved Insert the end of the material (2) and install the connecting material (2) so as to connect the broken parts (1a), and embed the connecting material (2) in the broken parts (1a) while heating, connecting material (2) embedded fracture point Coating a resin material made of a thermoplastic resin for coating the surface of 1a) (3) heated to dissolve the a method of applying to the surface of the broken portion (1a).

The method for repairing a thermoplastic resin member according to claim 2 is the method for repairing a thermoplastic resin member according to claim 1, wherein the connecting member (2) is flat and its width is at least one. It is formed of metal having a thickness of at least 3 millimeters or more.

The method for repairing a thermoplastic resin member according to claim 3 is the method for repairing a thermoplastic resin member according to claim 1 or 2, wherein the connecting material (2) is any of copper, brass or iron. It is formed by

Since the method for repairing a thermoplastic resin member according to the present invention is configured as described above, the following effects can be obtained.

First, in the method of repairing a thermoplastic resin member according to the first aspect of the present invention, an elongated metal having a degree of flexibility that can be manually bent is used as the connecting member (2). If it does so, according to the aspect of the fracture | rupture part (1a), a worker can change the form by bending a connection material (2) suitably etc. FIG. For example, when the fracture location (1a) is shallow at both ends of the connection material (2), the connection material (2) is close to both ends of the connection material (2) so as to embed the connection material (2) in the shallow position of the fracture location (1a) If it is bent at the position and the fracture point (1a) is deep, bending it at a position far from both ends of the junction material (2) in order to embed the coupling material (2) in the deep position of the fracture point (1a) Good. Therefore, according to the method for repairing a thermoplastic resin member described in claim 1, the thermoplastic resin member joining the broken portions by embedding and connecting the heated connecting material to the broken portions of the thermoplastic resin member To solve the first problem to be solved by the present invention, to provide a method of repairing a thermoplastic resin member capable of appropriately changing the form of the connecting member to appropriately fix the shape of the connecting member. Can.

Here, in the method of repairing a thermoplastic resin member according to claim 2, the connecting member (2) is flat and has a width of at least 1 mm or more and a thickness of at least 3 mm. The above metals are used. According to the knowledge obtained by the inventor of the present invention, the connecting member (2) can be bent by hand and, at the same time, it is possible to join the broken portions in the thermoplastic resin member with sufficient strength. Needs to have a certain size.

Next, in the method for repairing a thermoplastic resin member according to claim 1, the thermoplastic resin at the broken portion (1a) is heated and melted to temporarily join the broken portion (1a), and then the connecting member (2 ) Is embedded in the broken part (1a) while heating, it is easy to embed the connecting material (2) in the broken part (1a). In the method of repairing a thermoplastic resin member according to the first aspect of the present invention, since the metal having a high thermal conductivity is used as the connecting member (2), the connecting member (2) installed at the broken portion (1a) Is heated, the thermoplastic resin at the broken portion (1a) is easily heated, and hence it is easy to melt. Then, the method of repairing a thermoplastic resin member for joining the broken portions is embedded by embedding and connecting the heated connecting members to the broken portions of the thermoplastic resin member, and the heated connected members are embedded in the broken portions. The second aspect of the present invention is to provide a method of repairing a thermoplastic resin member capable of shortening the time required for the repair and joining the broken portions with sufficient strength by facilitating the process. It is possible to solve the problem.

Here, in the method of repairing a thermoplastic resin member according to the third aspect, the connecting member (2) is formed of any of copper, brass, or iron. Copper, brass, or iron is a metal having a relatively high thermal conductivity, while being flexible enough to be bent manually when elongated, and used as a connecting material (2) Suitable for

In the method of repairing a thermoplastic resin member according to the first aspect of the present invention, the coating resin material (3) for coating on the surface of the broken part (1a) in which the coupling material (2) is embedded is heated and dissolved. And applied to the surface of the broken part (1a). Then, a method of repairing a thermoplastic resin member for joining the broken portions by embedding and connecting the heated connecting material to the broken portions of the thermoplastic resin member is performed. Repairing of the thermoplastic resin member can maintain the aesthetics of the product in which the thermoplastic resin member is used and prevent deterioration of the connecting member by preventing the thermoplastic resin member from being exposed on the surface. A third problem to be solved by the present invention to provide a method can be solved.

Of course, according to the method for repairing a thermoplastic resin member described in claim 1, sufficient strength of the fractured portion (1a) can be obtained by embedding and connecting the heated connecting material (2) to the fractured portion (1a). As a result, it is possible to reduce the possibility that the broken portion (1a) will break again.

It is a reference drawing showing the fracture part in the thermoplastic resin member which is the object of the repair method by the present invention. It is a reference drawing showing the 1st process of the present invention. It is a reference drawing showing the 2nd process of the present invention. It is a reference drawing showing the 3rd process of the present invention. It is a reference drawing showing the 4th process of the present invention. It is a reference drawing showing the 5th process of the present invention. It is a reference drawing showing the fracture part in the thermoplastic resin member which repaired by the repair method by the present invention.

Hereinafter, a method of repairing a thermoplastic resin member according to an embodiment of the present invention will be described based on the attached drawings. In the present invention, as shown in FIG. 1, when repairing a portion where a thermoplastic resin member (1) formed of a thermoplastic resin, such as a headlight portion or a bumper portion of a car, is broken due to a car accident or the like. Although it is used, it is not particularly limited to such a case, and can be widely used to join the broken portion (1a) in the thermoplastic resin member (1).

First, as illustrated in FIG. 2, the worker heats and melts the thermoplastic resin at the broken portion (1a) at the broken portion (1a) of the thermoplastic resin member (1), and then the broken portion (1a) ) Temporarily (first step). Here, as the heating means (4) for heating the thermoplastic resin member (1), the coupling material (2), and the coating resin material (3) in the present invention, various known methods such as an electric iron may be used. The following heating means can be used.

Next, as shown in FIG. 3, the operator changes the form as appropriate by bending the both ends of the connecting member (2) or the like according to the form of the broken portion (1a), etc. 2 steps). By bending the both end portions of the connecting member (2), it can be embedded at a relatively deep position of the thermoplastic resin at the broken portion (1a), so that the broken portion (1a) can be joined more firmly, It is suitable. Also, for example, when the broken part (1a) is shallow at both ends of the coupling material (2), both ends of the coupling material (2) so as to embed the coupling material (2) in the shallow position of the fracture part (1a) Bend at a position close to the surface, and when the fracture point (1a) is deep, bend the joint material (2) at a position far from both ends of the joint material (2) in order to embed the joint material (2) in the deep position of the fracture point (1a) Just do it.

Here, the connecting member (2) is formed of an elongated metal with high thermal conductivity, which is flexible enough to be bent manually. Then, the operator can appropriately change the form of the connecting member (2) to perform appropriate bonding in accordance with the mode of the broken portion (1a) or the like. At this time, the worker may change the form by bending the connection member or the like using various tools such as pliers and pliers.

For example, a piano wire or the like may be used as the connecting member (2), but according to the knowledge obtained by the inventor of the present invention, the connecting member (2) is flat and has a width of at least 1 millimeter or more. It is preferred to use a metal having a thickness of at least 3 millimeters or more. That is, the inventor of the present invention needs to have the above-mentioned size in order to connect the breaking portion (1a) with sufficient strength while the connecting member (2) can be bent manually. We have just found out that there is a certain thing.

Further, it is preferable that the connecting material (2) be formed of either copper, brass or iron. Copper, brass, or iron is a metal having a relatively high thermal conductivity as well as being flexible enough to be manually bent when formed into an elongated shape.

Furthermore, the connection material (2) can also provide the connection material (2) which consists of several types which consist of various length, thickness, or a material. Then, the worker can select the most appropriate connecting member (2) according to the mode of the broken portion (1a) and the like, which is preferable.

Thus, the method of repairing a thermoplastic resin member according to the present invention heats and melts the thermoplastic resin at the broken portion (1a) of the thermoplastic resin member (1) to temporarily cut the broken portion (1a). After joining, since the connecting material (2) is embedded in the broken part (1a) while heating, the connecting material (2) can be easily embedded in the broken part (1a). Further, since the method for repairing a thermoplastic resin member according to the present invention uses a metal having a high thermal conductivity as the connecting member (2), the connecting member (2) installed at the broken portion (1a) is heated. Then, the thermoplastic resin at the broken portion (1a) is easily heated and easily dissolved. As a result, the time taken for the repair can be shortened, and the broken portion (1a) can be joined with sufficient strength.

Then, as illustrated in FIG. 4, the operator pierces the end of the bent connecting material (2) to the melted fracture point (1a) to connect the fracture site (1a), The connecting member (2) of which the form is changed as described above is installed (third step). Although a single connecting member (2) is shown in the figure, it is of course possible to use a plurality of the connecting members (2) according to the mode of the broken portion (1a). Also, in the figure, the connecting member (2) is installed to be orthogonal to the broken part (1a), but according to the form of the broken part (1a), for example, with respect to the broken part (1a) It can be installed in various manners, such as installing it at an angle.

Then, as shown in FIG. 5, the worker appropriately heats the connecting member (2) installed at the broken part (1a) using the heating means (3) as described above while suitably heating means (3) The connecting member (2) is embedded in the broken part (1a) by pressing using the above 4) (fourth step).

Furthermore, as shown in FIG. 6, the worker heats and dissolves the resin material for application (3) using the heating means (4) as described above, and the connecting material (2) as described above. ) Is applied to the surface of the fractured part embedded (the fifth step). The resin material for application (3) is a resin material made of a thermoplastic resin for applying on the surface of the broken part (1a) in which the connecting material (2) is embedded, and is the same material as the thermoplastic resin member (1) It is preferable to use the resin material of

Then, as shown in FIG. 7, according to the method of repairing a thermoplastic resin member of the present invention, the connecting member (2) is not exposed on the surface of the thermoplastic resin member (1). Thus, it is possible to maintain the aesthetics of products such as automobiles in which the thermoplastic resin member (1) is used, and to prevent the connecting member (2) from being deteriorated by being exposed to rain or the like. .

Of course, according to the method of repairing a member made of thermoplastic resin according to the present invention, as shown in FIG. 7, the broken part (1) is embedded by connecting the heated connecting material (2) and connected. Since 1a) can be joined with sufficient strength, it is possible to reduce the possibility of the broken part (1a) being broken again.

DESCRIPTION OF SYMBOLS 1 Thermoplastic resin member 1a Breaking point 2 Connection material 3 Resin material for application 4 Heating means

Claims (3)

The present invention relates to a method of repairing a thermoplastic resin member for joining the broken portion by embedding and connecting the heated connecting material to the broken portion at the broken portion of the thermoplastic resin member, the thermoplasticity at the broken portion The resin is heated and melted to temporarily bond the fractured portions, provide flexibility to a degree that allows manual bending, and bend the end portion of the connecting member formed of an elongated metal having high thermal conductivity. And insert the bent end of the connecting material into the broken part, and place the connecting material so as to connect the broken part, and embed the connecting material in the broken part while heating it. A thermoplastic resin characterized in that a coating resin material made of a thermoplastic resin for coating on the surface of the broken part in which the connecting material is embedded is heated and dissolved, and is coated on the surface of the broken part Method of repairing a member. A method of repairing a thermoplastic resin member according to claim 1, wherein the connecting member is flat and the metal is at least 1 millimeter in width and at least 3 millimeters in thickness. A method of repairing a thermoplastic resin member characterized in that it is formed. It is a repair method of the thermoplastic resin member described in Claim 1 or 2, Comprising: The said connection material is formed by either copper, brass, or iron, The thermoplastic resin member characterized by the above-mentioned Repair method.

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