JP2961391B2 - Semi-finished product fixing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for molding a molded product into an extruded product such as a weather strip of a car and, at the same time, fixing a cookie cut portion of a semi-finished extruded product to a mold at the time of connection. Things.

[0002]

2. Description of the Related Art A description will be given with reference to FIGS. In the figure, a symbol is used in which one of the median lines descending from the apex angle of the isosceles triangle is painted, and the painted side represents a molded part, and the non-painted side represents an extruded part. . Conventionally,
In forming a molded article such as a weather strip of an automobile and connecting the molded article to the extruded article at the same time, the extruded article 1
FIGS. 1 and 2 show a method of fixing a cookie cut portion 12 having only an extended lip 11 to a mold 90.
As shown in FIG. 5, there is a type in which the cookie cut portion 12 is placed on an a-type 92 in contact with a lower surface of an upper die 91 of a die 90, and the upper die 91 is covered from above and fixed.

[0003] However, in the conventional method of fixing the cookie cut portion, the cookie cut portion 12 is merely placed on the a die 91 until the upper die 91 is covered.
It is unstable and cookie cutting part 12
There is a problem that this may cause poor biting at the tip of the device and cause overlap.

[0004]

The problem to be solved by the present invention is that the conventional method of mounting the extruded article 10 has a problem in that the cookie cut portion 12 is not sufficiently fixed and the cookie cut portion is not sufficiently fixed during the molding operation. Poor biting of 12 tips,
This may cause overlap.

[0005]

A description will be given with reference to FIGS. According to the present invention, the cookie cut portion 12 is placed on a mold 40 to be allocated immediately below an upper mold 30 of a mold 20,
In addition, a horizontal groove 41 is formed in the mold 40 so that one edge of the cookie cut portion can be fitted therein, and a mold 50 that is similarly allocated directly below the upper mold 30 is attached to the cookie cut portion 1.
A step of extending the other edge of the cookie cutter 2 toward the a-shaped so as to be able to be suppressed, fitting one edge of the cookie cut portion 12 into the groove 41 of the a-shaped 40, and placing the cookie cut portion 12 on the a-shaped 40; Further, the semi-finished product fixing method comprises a step of fixing the cookie cut portion 12 by holding the other edge of the cookie cut portion 12 at the tip of the mold 50.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, an embodiment will be described. Reference numeral 10 denotes a semi-finished extruded product taking a weather strip as an example, reference numeral 11 denotes a lip protruding from a main body thereof, reference numeral 12 denotes a cookie cut portion. Extruded product 1 at the same time as molding
0, the extruded product 10 and the molded product 7
It is formed by extending a part of the lip 11 and the like in order to strengthen the coupling with the zero. Reference numeral 20 denotes a mold used for molding, and various molds can be considered depending on the shape of the molded product. In the present invention, the mold is configured as follows. That is, reference numeral 30 denotes an upper die, and reference numerals 40 and 50 denote an A-shaped die and a B-shaped die 50 to be disposed directly below the upper die 30.
A horizontal groove 41 is formed so that it can be covered from above about B, and the latter is a cookie cut portion 1 placed on a mold 40.
The other edge of 2 is extended toward the i-type 40 so that it can be suppressed,
It is configured such that it can be sandwiched by the mold 40 and the mold 50 during the interval C. Reference numeral 60 denotes a plurality of lower molds.

[0007] In forming the molded product 70 and connecting the semi-finished product to the extruded product 10, the extruded product 10 is first set on the lower die 60. Next, the mold 40 is put on. At this time, one edge of the cookie cut portion 12 is fitted into the groove 41 of the mold 40 so that the cookie cut portion 12 is placed on the mold 40. Then, the cookie cutter 50 is covered, and the other edge of the cookie cut part 12 is held down by the tip of the cookie cutter 50 to fix the cookie cut part 12. Finally, the upper mold 30 is covered from above, and a molded material such as rubber is pushed in, whereby a molded product 70 is formed and connected to the extruded product 10. In addition, since the parting line 80 is preferably located at the tip of the lip 11 for the purpose of improving the appearance and simplifying the burr picking operation, as shown in FIG. It is desirable that the lip is gradually changed from the top toward the molded portion 70 so as to become the tip of the lip.

[0008]

Since the present invention is configured as described above,
Even if the upper mold 30 is not covered, the cookie cut portion 12 is securely fixed, the defective portion such as poor biting at the tip of the lip 11 and the overlap is eliminated, and a raw material is attached to the lip back surface for lip positioning. In addition, the necessity of pressing against the die A is eliminated, and the number of steps is significantly reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a terminal portion of an extruded product.

FIG. 2 is a cross-sectional view showing a state of being set in a mold of a conventional example.

FIG. 3 is a cross-sectional view illustrating a state of being set in a mold according to the embodiment of the present invention.

FIG. 4 is a perspective view showing the presence or absence of a parting line burr on a product obtained by the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Extrusion molded product 11 Lip 12 Cookie cut part 20 Die 30 Upper die 40 D shape 41 Groove 50 B die 60 Lower die 70 Die molded product 80 Parting line 90 Die 91 Upper die 92 D shape 93 B shape 94 Lower die

Claims (1)

(57) [Claims] 1. A cookie-cut portion (12) formed in a die (40) to be disposed immediately below an upper die (30) of a die (20).
A horizontal groove (41) is formed on the die (40) so that one edge of the cookie cut portion can be fitted therein, and a die (5) to be allocated directly below the upper die (30).
0) is extended toward the A-shape (40) so that the other edge of the cookie cut portion (12) can be suppressed, and one edge of the cookie cut portion (12) is formed into the groove (4) of the A-shape (40).
1) and insert the cookie cut part (12)
0) and a step of fixing the cookie cut portion (12) by holding the other edge of the cookie cut portion (12) with the tip of the mold (50).