JPH08127251A - Manufacture of die-molding part of glass run - Google Patents

Abstract

PURPOSE: To facilitate the manufacture of a die-molding part which is even joined to an extrusion-molding part having a core by spliting a core inserted in a glass receiving part along a partition line formed in a door glass inserting direction, as a boundary, by inserting the core until it reaches the extrusion- molding part, and by taking out the core through an opening. CONSTITUTION: A longitudinal side part 18 and a top side part 20 which have been previously molded are set in dies, and cores 34, 35 are inserted in the dies, the cores 34, 35 being separated from each other along a partition line L, as a boundary, formed in the insertion direction of a good glass pane 16, until they reaches to the longitudinal side edge part 18 so as to prevent a charged material from flowing into the longitudinal edge part 18. The core 34 is extended at its proximal end upward so as to form a hole 32 therein, and the core 35 is inserted from the opening K side of the glass run 17. After the longitudinal side part 10 and the top side part 20 are coupled together through the intermediary of a die-molding part 21 by charging a material, the core 3 is taken out by pulling the proximal end part 34A thereof through the hole 32 on a side near to the longitudinal side part 18 of the die-molding part 21, and the core 35 can be taken out through the opening K.

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 molding portion of grass run.

[0002]

2. Description of the Related Art For example, as shown in FIG. 9, a grass run 1 attached to the inner peripheral edge of a door sash is known. The glass run 1 is a member having a substantially U-shaped cross section which is mounted in a recess formed on the inner peripheral edge of the door sash. The part is manufactured as the mold forming part 2.

When the glass run 1 is manufactured, a pre-manufactured extrusion molding unit 3 is set in a mold for molding the molding unit 2, and a material is injected into the mold to mold the molding unit 2 and the extrusion molding unit 3. And are integrally connected.

In the glass run main body 4 of the mold forming section 2,
As shown in FIG. 10, an inner lip 5 and an outer lip 6 are provided, but a door glass 7 received by the glass run main body 4 in order to make the vehicle body a flash surface.
Is offset to the outside of the passenger compartment, and therefore the outer lip 6 and the inner lip 5 have different sizes, and the outer lip 6 is smaller. Utilizing the fact that the outer lip 6 is small, the mold forming portion 2 having an internal shape that is difficult to remove from the mold as it is is manufactured by the following method.

For example, as shown in FIG. 11, a side wall 6A of the glass run main body 4 on the outer lip 6 side is unfolded, and a cavity-shaped mold (not shown) is formed so that the outer lip 6 is pressed against the side wall 6A. Using the core 8, the extrusion molding section 3 is set in a mold and the molding section 2 is injection molded.

After the molding, the molding portion 2 integrated with the extrusion molding portion 3 is attached to the inner peripheral edge of the door sash, so that the expanded side wall 6A becomes parallel to the opposing side wall 5A and inside the door sash. Fits. The outer lip 6 of the extrusion molding portion 3 is gradually crushed and is aligned with the outer lip 6 of the molding portion 2 (which is a simple protrusion).

On the other hand, as shown in FIG. 12, by bending the side wall 6A of the glass run body 4 on the outer lip 6 side inward, the outer lip 6 is relatively pressed against the side wall 6A. Using a shaped mold (not shown) and the core 9, the extrusion molding section 3 is set in the mold and the molding section 2 is injection molded.

After the molding, the molding portion 3 and the extrusion molding portion 2 are integrated with each other. However, at the end portion of the extrusion molding portion 2, the side wall 6A is gradually deformed to be aligned with the outer lip 6 of the molding portion 2.

Therefore, in any of the above manufacturing methods, since the corner portion is not formed in the portion between the outer lip 6 and the side wall 6A of the molding portion 2, the cores 8 and 9 are molded. After the molding, the die can be smoothly demolded (this type of technique is disclosed, for example, in JP-A-63-43819 and JP-A-6-48181).

[0010]

However, in the above-mentioned manufacturing method, there is no problem when the extrusion molding part 2 is molded only from rubber. For example, as shown in FIG. When the lower sash 10 is integrated with the core metal 11 like the glass run 1 at the corner portion between the lower sash 10 vertically arranged in the door body and the front side of the door sash, the core metal 11 is as described above. Because it cannot be deployed or bent,
The mold forming part 2 and the lower sash 10 corresponding to the above-mentioned extrusion forming part cannot be smoothly connected to each other so that they can be aligned with each other.

Further, as shown in FIG. 13, it is also possible to preform by lowering the side sash 10 by after-roll forming after preforming by temporarily expanding the side wall as in the case of FIG. However, the number of work processes increases, leading to an increase in cost.

Therefore, the present invention provides a method for manufacturing a mold forming part of grass run which can be easily manufactured even in a mold forming part joined to an extrusion forming part having a cored bar.

[0013]

A cross section for receiving the door glass in the glass run main body when the door glass is closed, and sealing the inside and the outside of the door glass by means of respective lips provided inward at the ends of both side walls of the glass run main body. A glass run having a substantially U-shape, in the method for manufacturing a mold part of a glass run joined to an extrusion molding part, the core inserted into the glass receiving part is a boundary line provided in the door glass insertion direction. By molding into one core on the one lip side and the other core on the other lip side, and inserting each core up to the part that reaches the extrusion molding part set in the mold in advance. After doing
The one core is pulled out from the hole formed in the wall of the grass run main body and opened and closed by the lid, and the other core is taken out from the opening of the glass run main body.

The wall of the grass run main body in which the holes are formed is preferably a side wall or a bottom wall of the grass run main body.

Further, at least one of the extrusion-molded portions attached to both ends of the die-molded portion may be a glass run having a core metal having a substantially U-shaped cross section.

[0016]

According to the invention described in claim 1, one core can be pulled out from the hole without crushing the lips of the mold forming part and the extrusion forming part, so that each lip is connected to the glass run. Since it can be extended inward of the main body, a sufficient sealing margin for each lip can be secured, and variations in the door glass can be followed.

According to the invention described in claim 2, since the hole for extracting the core is not visible from the outside,
It does not impair the appearance quality.

According to the third aspect of the present invention, even when it is aligned with the extrusion-molded portion having the core metal, the sealing property or the mold (core) removing property is not adversely affected.
Also, the lip can be aligned with the lip of the extrusion.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

A glass run 17, which receives the door glass 16 from the opening K when the door glass is closed and seals the inside and outside of the vehicle, is arranged in a portion from the inside of the door body 14 of the front side door 13 shown in FIG. 8 to the sash portion 15. It is set up.

The glass run 17 has a vertical side portion 18 as an extruded portion vertically arranged in the front and rear of the door body 14, and a substantially U-shaped section of the door sash 19 above the sash portion 15. Has an upper side portion 20 housed in
Corner portions, which are joints between the vertical side portions 18 and the respective upper side portions 20, are connected by a molding portion 21.

That is, the vertical side portion 18 and the upper side portion 20 are preliminarily formed by extrusion molding, these are set in a mold, and the respective molding portions 21 are injection-molded, whereby the glass run 17 is integrally molded. ing.

As shown in FIG. 1, the vertical side portion 18 and the upper side portion 20 mounted in the door sash 19 have a mold forming portion 21.
Are connected by.

The vertical side portion 18 is preliminarily manufactured by extrusion molding, and the outer lips 23 are provided outside the vehicle compartment and the inner lips 24 are provided inside the vehicle interior at both ends of the core metal 22 having a substantially U-shaped cross section. The outer lip 23 is shorter than the inner lip 24 because the door glass 16 to be received is offset to the outside of the vehicle compartment to form a flush surface.

Unlike the vertical side portion 18, the upper side portion 20 is made of only a rubber material, and similar to the vertical side portion 18, the inner lip 25 and the inner lip 25 are formed at the end portions of both side walls of the glass run main body G. Also has a short outer lip 26.

The mold forming portion 21 includes a vertical side portion 18 and an upper side portion 20.
Is a member that is connected at a joint S between and and is bent in a dogleg shape. The outer lip 27 as one lip and the other lip that correspond to the vertical side portion 18 and the upper side portion 20 are aligned. The inner lips 28 are provided at the ends of the side walls 29, 30 of the glass run body G, respectively.

On the side wall 29 as a wall on the outer lip 27 side of the molding portion 21, a hole 32 is formed which can be opened and closed by a thin film 31 as a lid. The thin film 31 may have the outer lip 27 side as an opening / closing support shaft, or the bottom wall 33 side as an opening / closing support shaft as shown in FIG.

Next, the manufacturing method will be described. First,
The preformed vertical side portion 18 and the upper side portion 20 are set in a mold (not shown). Inside this mold, a core 34 (one core) and a core 35 (the other core) are inserted in a portion which becomes a glass receiving portion near the vertical side portion 18. The cores 34, 35 are separated from the cores 34 and the inner lip 2 on the outer lip 23, 27 side with the partition line L provided in the insertion direction of the door glass 16 as a boundary.
It is divided into a core 35 on the side of 4, 28 and each core 3
4, 35 are inserted up to the vertical side portion 18 so that the injection material does not flow into the vertical side portion 18. And
The base 34A of the core 34 extends upward to form the hole 32, as shown in FIG. 2, and the core 35 is inserted from the opening K side of the glass run 17.

On the other hand, in the vicinity of the upper side portion 20 of the mold, since the upper side portion 20 does not have a core metal, the upper side portion 20 is manufactured by the same method as the conventional method or the same method as that of the vertical side portion 18. It is joined with 20.

Then, the material is injected and the vertical side portion 18 and the upper side portion 20 are connected by the mold forming portion 21 (FIGS. 1 to 3).
State), the core 34 is pulled out from the hole 32 by the base portion 34A near the vertical side portion 18 of the mold forming portion 21, and the core 35 is removed from the opening K.
Even if it approaches 0, the core outside the figure is removed.

Next, as shown in FIG. 4, holes 32 are formed in the thin film 31.
Is closed and fixed with an adhesive to complete the production. As shown in FIG. 5, the end of the thin film 31 may be extended and joined by an Epto seal to close the hole 32.

Therefore, in the molded portion 21 thus manufactured, the shapes of the inner lip 24 and the outer lip 23 of the vertical side portion 18 having the cored bar 22 are changed,
It is not necessary to squeeze them, and the inner lip 28 and the outer lip 27 of the inner lip 2 of the vertical side portion 18
4, it can be aligned with the outer lip 23. Therefore, there is no gap between the door glass 16 and
The inside and outside of the door glass 16 can be reliably sealed.

Further, since the hole 32 is closed by the thin film 31, there is no risk that water or the like will enter from this portion, and since this portion is housed in the door sash 19, the appearance quality is not impaired.

Since it is not necessary to re-form the vertical side portion 18 by means of after-roll forming after molding, the manufacturing cost can be reduced.

The thin film 31 may be provided near the outer lip 26 of the bottom wall 33 as shown in FIG.

[0036]

According to the invention described in claim 1, it is not necessary to crush each lip of the mold molding portion and the extrusion molding portion,
Since one core can be pulled out from the hole, each lip can be extended toward the inside of the glass run main body, a sufficient sealing margin for each lip can be secured, and variations in the door glass (plane direction) It is possible to obtain a product that also follows the dimensional error).

According to the invention described in claim 2, since the hole for extracting one of the cores cannot be seen from the outside, the appearance quality is not deteriorated.

According to the third aspect of the present invention, even when it is joined to the extrusion-molded portion having the cored bar, it does not adversely affect the sealing property or the mold (core) removing property, and the lip Since the shape of can be freely set, it can be matched with the lip of extrusion molding.

[Brief description of drawings]

FIG. 1 is a perspective view of a glass run according to an embodiment of the present invention immediately after molding.

FIG. 2 is an explanatory view of the arrangement of cores viewed from the A direction and the B direction in FIG.

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

FIG. 4 is a cross-sectional explanatory view when the thin film is closed.

FIG. 5 is an explanatory diagram corresponding to FIG. 4 of another embodiment.

FIG. 6 is a perspective view of another embodiment.

FIG. 7 is a perspective view of still another embodiment.

FIG. 8 is a side view of a front side door.

FIG. 9 is a perspective view of a conventional technique.

10 is a cross-sectional view taken along the line CC of FIG.

FIG. 11 is a sectional view corresponding to FIG. 1 showing a conventional molding state.

FIG. 12 is a sectional view corresponding to FIG. 11 showing another conventional molding condition.

FIG. 13 is a sectional view corresponding to FIG. 11 showing another conventional molding condition.

FIG. 14 is a sectional view of a lower sash.

[Explanation of symbols]

 16 ... Door glass 18 ... Vertical side part (extrusion molding part) 20 ... Upper side part (extrusion molding part) 21 ... Mold molding part 22 ... Core metal 29, 30 ... Side wall (wall) 31 ... Thin film (lid) 32 ... Hole 33 ... Bottom wall (wall) 34 ... Core (one core) 35 ... Core (other core) G ... Glass run main body K ... Opening L ... Partition line

Claims (3)

[Claims] 1. A substantially U-shaped cross section for receiving the door glass in the glass run main body when the door glass is closed, and sealing the inside and outside of the door glass by means of lips provided inwardly at the ends of both side walls of the glass run main body. A grass run,
In a method for manufacturing a molding portion of a glass run joined to an extrusion molding portion, one core on one lip side is defined with a partition line provided in a door glass insertion direction as a core to be inserted into a glass receiving portion. And the other core on the other lip side, and each core is inserted and molded up to a portion reaching the extrusion molding part set in advance in the mold, and then formed on the wall of the glass run main body, A method for manufacturing a molding portion of a grass run, wherein the one core is pulled out from a hole that can be opened and closed by a lid, and the other core is taken out from an opening of the grass run main body. 2. The method for producing a mold forming portion of a grass run according to claim 1, wherein the wall of the grass run main body in which the hole is formed is a side wall or a bottom wall of the grass run main body. 3. The glass run, wherein at least one of the extrusion-molded parts attached to both ends of the mold-molded part is a glass run having a cored bar having a substantially U-shaped cross section.
A method for producing the molding portion of the described glass run.