JP2976749B2 - Glass Run Corner Forming 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 forming a corner portion of a glass run, in which a glass run, which is an extruded body in which a portion of a corner to be formed is cut away, is curved and set in a mold to form a corner portion. It relates to a method of molding. More specifically, the vehicle has a vehicle interior standing wall portion, a vehicle exterior standing wall portion, and a bottom wall portion that constitute a glass sliding groove, and the glass slide is formed from a tip of both the standing wall portions.
The present invention is applied to a glass run having a slide lip extending in each of the moving grooves and having a design lip along at least one of the upright wall portions along the upright wall portion. This is a method of forming a corner portion.

[0002]

2. Description of the Related Art Here, as shown in FIG.
A door glass run having a design lip on each side will be described as an example, but is not limited thereto.

The door glass run 1 has a basic cross-sectional structure including a vehicle interior standing wall portion 2, a vehicle exterior standing wall portion 3, and a bottom wall portion 5 forming a glass sliding groove C. And each standing wall part 2, 3
Lip 7 and 9 on the outer wall
Along the inside, a large sliding lip 11 and a small sliding lip 13 are provided inside. At this time, the large sliding lip 11 on the inside of the vehicle is used as much as possible for the door glass G.
From the viewpoint of improving the design and reducing the wind noise.

The glass run 1 has a channel type sash rail 21 formed on a door frame F of a front door D (see FIG. 1), and mounting flange portions 23 and 24 on both sides of the rail. Attachment is performed so as to be sandwiched between the upright walls 2 and 3 and the design lips 7 and 9 respectively. In the illustrated example, reference numerals 23a and 24a denote raising claws for retaining the glass run.

[0005] The configuration of the corner portion (portion II in FIG. 1) of the glass run 1 is, for example, a configuration in which a part of the extruded body 15 is cut out, and the cutout portion is complemented by a molding part 17. (See FIG. 3).

That is, as shown in FIGS.
The extruded molded body 15 of the glass run 1 having the bottom wall 5 and the compatible wall 2 continuous with the bottom wall 5 and the base part 3 notched is set in a mold 31. The part is molded. At this time, the extruded body 15 is set in the shape of the set groove 3 formed in the mold 31 in a shape along the corner of the door frame.
2 and at the same time, a mold cavity 33 is formed by the mold 31 and the extruded body 15.

On the lower mold 35, a sliding grooved core 37 having a sectional shape of the glass sliding groove C is arranged. The remaining portion of the extruded body 15 on one side of the core 37, that is, the lower middle and upper middle dies 39, 40 holding the large sliding lip 11 and the small sliding lip 13, respectively, are provided on the other side. The lower and upper middle dies 42 and 43 for forming the cavities 33 are formed in the cavities. In addition, the arm part 3 of the lip gripping lower mold 39 and the sliding grooved core 37 is used.
7a, between the lip grip lower middle and upper middle dies 39, 40
A slidable escape space 41 is formed. The lower lip gripping middle mold 39 and the upper lip gripping middle mold 40 are connected to each other, and are rotatable integrally with the sliding grooved core 37 in the mold opening and closing direction. In addition, each medium 3
9, 40 and 42, 43 can be set at predetermined positions by guide pins (not shown) or the like.

[0008] Then, the lip grip upper middle mold 40 and the upper mold 45
The dividing surface 46 of the above-mentioned section has its starting point as a boundary position between the glass run upright wall portion 3 and the design lip 9, and extends in a direction (lateral direction) orthogonal to the mold clamping direction.

[0009]

It has been found that the following problems arise in the method of forming a glass run corner having the above structure.

As shown in FIG. 4, the dividing surface 46 between the lip-gripping upper middle mold 40 and the upper mold 45 is located at the boundary between the glass run upright wall 3 and the design lip 9. Had occurred. That is, as shown in the figure, the sliding lip 13 of the extruded body 15 is often set in a mold without being completely inserted (the sliding lip 13, the design lip 9 and the like for setting in a curved manner). extrudate 15 remaining portion of, as indicated by the two-dot chain line in FIG. 5, to try to escape toward the inner direction of the bending portion), exterior wall part 3 of the glass run 1
And the design lip 9 is caught between the upper and lower lip gripping upper molds 40 and 45 .

[0011] In view of the above, the present invention includes an inner side standing wall portion, an outer side standing wall portion, and a bottom wall portion constituting a glass sliding groove.
With a sliding lip that protrudes and at least one of the
When molding a corner portion of a glass run having a cross section provided with a design lip along the standing wall portion outside the standing wall portion ,
It is an object of the present invention to provide a method of forming a corner portion of a glass run, which does not have a possibility of mold burrs at a boundary portion between a standing wall portion of the glass run and a design lip.

[0012]

The method of forming a corner portion of a glass run of the present invention solves the above problems by the following constitution.

[0013] interior side wall part constituting the glass slide groove, with the vehicle exterior side wall part and a bottom wall, glass from the distal end of both walls
A sliding lip extending into the sliding groove, and extending along at least one of the standing walls along the standing wall.
Molding a corner portion of the glass run having a cross section with a design lip Te during extrusion of the glass run which cut away both walls source unit side that is continuous with the bottom wall and the bottom wall portion of the corner forming scheduled portion The body is curved and set in a mold having a lip gripping medium for gripping the sliding lip on the design lip forming side of the glass run, and a molding material is formed in the cut-out portion.
A method of molding a corner portion injected, outermost outer side surface 9b of the front <br/> SL design lip 9 the lateral division surface 46 of the lip bunch <br/> lifting Medium 40A and the upper mold 45A Outside the position , the longitudinal direction of the middle lip gripping mold 40A and the upper mold 45A.
Position the dividing surface 46A on the outer surface 9b of the design lip 9.
Is location, the shoulder 9 of the design lip 9 lip gripping Medium 40A
a is gripped and molded.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments. The same parts as those in the above-described example are denoted by the same reference numerals, and all or part of the description thereof is omitted.

The interior side wall part 2 constituting the glass slide groove C, includes a vehicle exterior side wall part 3 and the bottom wall 5, both walls 2,
3 slides extending into the glass slide groove C from the tip of
It includes a lip 11 and 13, of both the wall portions 2 and 3, at least one upstanding wall on the outside of the standing wall portions 2 and 3 of (both in the illustrated example)
In that molding corner portion of the glass run 1 with a cross section having a design lip 7 and 9 along the section 2, 3, both walls continuous with the bottom wall portion 5 and the bottom wall 5 of the corner forming scheduled portion Extruded body 1 of glass run 1 with two or three bases notched
5 is set in the mold 31 while being curved, and the above-mentioned cutout is formed.
A molding material is injected into the bent portion to form a corner.
(See FIGS. 2 and 3) The configuration of the mold 31 for molding this corner portion was as follows (see FIG. 6).

On the lower mold 35, a sliding grooved core 37 having a sectional shape of the glass sliding groove C is arranged. The remaining portion of the extruded body 15 on one side of the core 37, that is, the lower middle and upper middle dies 39 and 40A that hold the large sliding lip 11 and the small sliding lip 13, respectively, are held on the other side. The lower and upper middle dies 42 and 43 for forming the cavities 33 are formed in the cavities.

Here, the upper mold 45A and the lip grip upper middle mold 4
With 0ALateralDivision surface 46IsAs shown in the figure,
Nine design lip 9Outsideside9bofOutermostpositionOutside than
Side (upper)It is formed in. AndLip grip upper middle size
40A and the upper die 45A in the vertical directionDivision surface 46APosition of
Usually extends in the direction parallel to the mold clamping direction.And design
Located on the outer surface 9b of the lip 9ing. Not inevitable
However, in this embodiment, the design lip 9 of the divided surface 46A is
A gap S is formed at the contact position of
Outside surface of lip 9 (design surface)9bNot to hurt
It is.

Next, a method of forming a corner portion of a glass run using the above-described mold will be described. (See FIGS. 7 to 9)
It should be noted that the lip grip lower middle mold 39 and the lip grip upper middle mold 40A
Is connected to the lower mold 35 by a hinge arm 36 and connected to the lower mold 35 by a hinge arm 36 so as to be integrally rotatable in the mold opening and closing direction.

First, the lower and upper middle lips 39, 4
The assembly of 0A and the sliding grooved core 37 is raised by rotating in the mold opening direction. Then, the lower and upper lip gripping middle dies 39 and 40A slide down by their own weight and descend.
In this state, by bending the bottom wall portion 5 and the extrudate 15 cut out of the original portion of both walls 2 and 3 of the corner molding scheduled portion is set in the sliding groove Fugata core 37 . (See FIG. 7) Subsequently, the cavity forming lower middle mold 42 is inserted and set between the vehicle interior standing wall portion 2 of the extruded body 15 and the vehicle interior design lip 7. Lip grip lower middle / upper middle 39,40
A is pulled up, and lip holding lower middle and upper middle dies 39, 40
The assembly of A and the sliding grooved core 37 is turned down in the mold closing direction. (See FIG. 8) Next, the cavity forming upper middle mold 43 is inserted and set between the vehicle exterior standing wall portion 3 and the vehicle exterior design lip 9 so as to be turned. (FIG. 9
Then, the sliding lips 11 and 13 are gripped by the lip gripping lower and upper middle dies 39 and 40A, and the molding cavity 33 is formed.

[0020] At this time, the division position of the upper mold 45A of the lip gripping upper intermediate mold 40A has an outer than the outermost lateral position of the divided surface 46 is the outer surface 9b of the design lip 9 of the glass run 1
Side (upper) , and the vertical dividing surface 46A is the design lip.
9 on the outer surface 9b . In addition, lip grip
The shoulder 9a of the design lip 9 is gripped by the upper middle die 40A . For this reason, unlike the conventional case, the design lip 9 is not set in a raised state.

Therefore, in this state, the upper mold 45A is lip-held.
Lifting Kaminaka type 40A, placed on the cavity forming upper intermediate mold 43,
Even if mold clamping (clamping) is performed, there is no possibility that mold burrs will occur. After mold clamping, rubber material (such as CR, EPDM, etc.) is placed in the mold cavity 33 by transfer molding or the like.
To form a corner.

The mold release after the vulcanization molding of the molded part is performed in a procedure reverse to the above-mentioned mold closing. That is, after the upper mold 45A and the cavity forming upper mold 43 were sequentially removed, the assembly of the lip-gripping lower and upper molds 39 and 40A and the sliding grooved core 37 was attached to the cavity forming lower mold 42. It is raised by rotating it in the mold opening direction. Then, the middle size
The upper and middle dies 39 and 40A slide down by their own weight and descend. In this state, the cavity forming lower middle mold 42 is removed, and the extruded body 1 in which the cutout portion is complemented by the mold forming section 17 is formed.
The mold 5 is released from the core 37 having a sliding portion.

[0023]

Operation and effect of the present invention The method for forming a corner portion of a glass run according to the present invention has the above-described configuration, and thus has the following operation and effects.

[0024] The transverse dividing plane of the lip gripping the middle- and upper die from the outermost position of the outer side surface of the design lip of the glass run
The outside in the vertical direction on the outside surface of the design lip.
, And the upper lip is gripped by the upper die to grip the shoulder of the design lip and molded. Therefore, unlike the related art, there is no possibility that the upper die is set and the mold is clamped in a state where the design lip is raised, and there is no possibility that mold debris is generated at the boundary between the standing wall portion of the glass run and the design lip. Furthermore, due to the guide action of the shoulder of the design lip by the lip grip upper middle,
The deformation and the variation of the design lip after the corner curved shape is formed are also reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a front door of an automobile.

FIG. 2 is a sectional view of a mounting mode of a glass run to be assembled to the door of FIG.

FIG. 3 is a perspective view showing a configuration of a corner portion of a glass run.

FIG. 4 is a cross-sectional view of a mold in a conventional corner part forming method (a part taken along line AA in FIG. 4).

FIG. 5 is an overall perspective view of a mold showing a conventional molding mode of a corner portion of a glass run.

FIG. 6 is a cross-sectional view of a mold in the corner part forming method of the present invention (part taken along line AA in FIG. 4).

FIG. 7 is a partial cross-sectional view showing an initial stage in the corner forming method of the present invention.

FIG. 8 is a partial sectional view showing the same intermediate stage.

FIG. 9 is a partial cross-sectional view showing the final stage.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 door glass run 2 car inner standing wall 3 car outer standing wall 5 bottom wall 7 design lip 9 design lip 9 a design lip shoulder 9 b design lip outer surface 11 large sliding lip 13 small sliding lip 15 extruded body Reference Signs List 17 Molding part 31 Mold 33 Molding cavity 35 Lower die 37 Sliding grooved core 40, 40A Lip grip upper middle die 45, 45A Upper die (fixed die) 46 Lateral movement between lip gripping middle die and upper die Dividing surface 46A Longitudinal dividing surface between lip gripping middle mold and upper mold C Glass sliding groove D Front door F Door frame G Glass S Clearance

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B29D 31/00 B29C 45/14

Claims (1)

(57) [Claims] 1. A vehicle interior standing wall portion forming a glass sliding groove,
It includes a vehicle exterior side wall part and a bottom wall portion, or the tip of the both wall portions
Slide lip extending into the glass slide groove
The stand is provided outside at least one of the stand walls.
When forming a corner portion of a glass run having a cross section provided with a design lip along a wall portion, the bottom wall portion of the portion where the corner is to be formed and the both-side wall portion continuous to the bottom wall portion are notched. Extruded glass run
Into a mold having a lip gripping medium-sized for gripping said sliding lip design lip formation side of the glass run, curved so by setting and call <br/> Na by injecting a molding material into the cut-away portions In the method of molding a part, the side of the middle lip gripping mold ( 40A) and the upper mold (45A)
The direction of the dividing plane (46) outside the side surface of the design lip (9)
As outward from the outermost position of (9b), said lip bunch
Vertical split surface between the holding mold (40A) and the upper mold (45A)
(46A) is positioned on the outer surface (9) of the design lip (9).
b) A method of forming a corner portion of a glass run, wherein the shoulder portion (9a) of the design lip (9) is gripped by the middle lip gripping mold (40A) and molded.