JPH0741642B2 - Molding die - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is, for example, the automobile Doafure - the door sash to be used attached to the arm
The present invention relates to a molding die for molding.

[0002]

2. Description of the Related Art This type of door sash is shown in FIG.
It is configured as shown in FIG.

That is, in the figure, reference numeral 1 denotes a plastic sash body having a substantially U-shaped cross section. As shown in FIG. 24, the sash body 1 has a clip 2 in a mounting hole 3a of a door frame 3. It is inserted and attached.

However, since only the clip 2 causes play due to the clearance between the mounting hole 3a and the clip 2, as shown in FIG. 25, the sash body 1 is partially bent inward at both side edges. The bent portion 4 is integrally formed, and the bent portion 4 is engaged with the door frame 3. In the figure, 12 is a door and 13 is a door glass.

Further, the door sash is molded by a fixed mold 5 and a movable mold 6 as shown in FIG. 26, and after the molding is completed, the movable mold 6 is separated from the fixed mold 5 and an extruded plate is formed. The door sash is pushed out by raising 7. By the way, a slide plate (not shown) is provided inside the push-out plate 7, and the slide plate is connected to the inclined cores 10 and 11 via connecting rods 8 and 9.

As shown in FIG. 27, the inclined core 10 is engaged with the bent portions 4 and 4 of the sash body 1, and the inclined core 11 is connected to the clip 2 of the sash body 1 as shown in FIG. Are engaged. FIG. 29 shows XX in FIG.
It is sectional drawing shown along a line.

When the push-out plate 7 is raised, a slide plate (not shown) is slid so that the connecting rods 8,
The tilted cores 10 and 11 are raised via 9 and slide in the direction of the arrow. By this sliding movement, the inclined cores 10 and 11 are separated from the bent portions 4 and 4 of the sash body 1 and the clip 2, and the sash can be removed.

[0008]

However, in the conventional device, the slidable directions of the inclined cores 10 and 11 are limited, and the sliding amount of the inclined cores 10 and 11 is limited by the sliding angle and the protruding stroke. Therefore, there is a problem that the width W of the bent portions 4 and 4 of the sash body 1 cannot be increased. Further, when a large number of slide plates are arranged inside the push-out plate 7, the slide plates come into contact with each other when they slide, so that the number of slide plates is limited.

Therefore, conventionally, the number of the clips 2 and the bent portions 4 is limited, and the shape of the door sash is very elongated as shown in FIG. Causes rattling. Therefore, an object of the present invention is to provide a molding die capable of favorably molding a resin-made molded product having a large width W of the bent portion of the molded product body.

[0010]

In order to solve the above-mentioned problems, the present invention is provided so as to be movable in a direction in which it comes in contact with and separates from a fixed mold, and has a cross section between the fixed mold and the fixed mold. A movable mold for forming a molded product having a substantially U-shaped molded product main body and a bent part that is integrally molded on both side green parts of the molded product main body and bends inward, and the movable mold Has a step part that engages with the bent part of the molded product , and is movable after molding
As the mold is opened, the urging force of the urging member
Push the shaped product from the movable mold in the direction of the fixed mold for a predetermined distance.
And pushing means for separating from the movable mold the the bent portion out, and before Symbol slidably disposed in a direction substantially perpendicular to the extrusion direction of the extrusion means to the movable mold, the bent portions of the molded article A slider having an engaging portion that engages with the pusher,
The step allows the molded product to be extruded for a certain distance, and the bent part can move.
After being separated from the mold, the slider is moved in accordance with the further opening operation of the movable mold, and the bent portion of the molded product is elastically deformed outward so as to be separated from the stepped portion of the extruding member. And means for moving.

[0011]

[Function] A biasing portion of the pushing means according to the opening operation of the movable mold
The bending part of the molded product is separated from the movable mold by the urging force of the material
After that, move the slider to remove the bent part of the molded product.
To elastically deform in one direction to separate from the stepped portion of the extruded member
Prevents the bent part of the molded product from contacting the movable mold.
First, the push member is separated from the step.

Therefore, the bent portion of the molded product is in contact with the movable mold.
It will come off without touching it, so it will not be scratched.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in FIGS. FIG. 1 is a configuration diagram schematically showing a door sash molding die.

Reference numeral 21 in the drawing denotes a fixed mold, and this fixed mold 21
The movable mold 22 is opposed to. This movable mold 22
Is provided so as to be movable in a direction of approaching and separating from the fixed mold 21. When the fixed mold 21 is brought into contact with the movable mold 22, a space 23 for molding the door sash is formed between them.
Is configured.

A lock ring 24 for positioning the machine and the mold is provided at a substantially central portion of the fixed mold 21, and a sprue bush 25 is provided.

A nozzle R for contacting an injection nozzle (not shown) is formed on the sprue bush 25, and a sprue 26 for guiding the molten plastic material injected from the injection nozzle (not shown) is formed. .

Guide pins 27 project from the corners of the fixed mold 21. These guide pins 27 ...
Is slidably inserted into a guide hole 28 formed in the movable mold 22.

The movable mold 22 is mounted on a mounting plate 30 with bolts 29. In addition, a recess 31 is formed in the mounting plate 30, and the first and second extruding plates 32 and 33 are provided in the recess 31 in a superposed state. The first and second push plates 32 and 33 are fixed by bolts 34. The first and second extruding plates 32 and 33 are slidably supported by a support 35 and a guide support 36.

The mounting plate 30 has a plurality of through holes 37 formed therein. A block 38 is provided in the through hole 37, and the block 38 is fixed to the second extruding plate 33 by a bolt 39. The block 38 is pressed by a push rod (not shown). Further, a sprue lock pin 40 is provided in a substantially central portion of the first extrusion plate 32 so as to project.

By the way, a runner 41 for guiding a molten plastic material as a molding material is formed on the plane portion of the movable mold 22 as shown in FIG.
1 communicates with the molding space 23 described above.

A push-up block 45 as a push-up member having a shape corresponding to the shape of a door sash as a molded product is provided on the flat surface of the movable mold 22. This push-up block 45 is connected to the line P-P and Q- in the figure.
The cross section taken along the line Q is as shown in FIGS. 3 and 4, and the sash body 101a is mounted on the push-up block 45.
Door sash 1 consisting of and bent portions 101b and 101b
01 is formed. FIG. 5 shows the push-up block 45, and the push-up block 45 has a different sectional shape depending on the site.

That is, FIG. 6 is a sectional view taken along the line H-H in FIG. 5, FIG. 7 is a sectional view taken along the line G-G, and FIG.
Is a sectional view taken along line I-I, FIG. 9 is a sectional view taken along line MM, and FIG. 10 is a sectional view taken along line NN.

Except for the portion of the push-up block 45 shown along the line G-G, the push-up block 45 has steps 45a, 45a.
Are formed, and the bent portions 101b and 101b of the door sash 101 are formed along these stepped portions 45a and 45a. By the way, as shown in FIG. 2, the push-up block 45 includes the first to seventh pushing mechanisms 61 to 67.
Is pushed out by. The first to third push-up mechanisms 6
1, 62 and 63 have the same structure and are configured as shown in FIG.

That is, reference numeral 42 in the drawing denotes a recess formed in the movable mold 22, and the push-up block base 43 is provided in the recess 42.
Is stored. The push-up block 45 is fixed to the push-up block base 43 by a fixture 44. Slopes 46 and 47 are formed on the push-up block base 43 and the push-up block 45, and a slide core 48 as a slider is slidably provided on the slopes 46 and 47. On one side surface of the slide core 48, a recess 48a is formed as an engaging portion that engages with the bent portion 101b of the sash body 101a.

Further, the inclined surface 4 of the push-up block base 43
6 is provided with a stopper 49, and the stopper 49 serves as an angular pin 5 as a slider moving means described later.
It is urged by a spring 50 for reducing the load on 2.

On the other hand, an angular pin 52 is provided on the fixed mold 21 via a cotter block 51 in an inclined state. The angular pin 52 is inserted into a through hole 53 formed in the slide core 48 in an inclined state. The push-up block base 43 is connected to the first push-out plate 32 via a connection guide pin 54.
The second pushing plate 33 is a spring 5 as a biasing member.
5, the movable mold 22 is opened by
The connecting guide pin 54 as shown in FIGS. 16 and 17.
So that the push only constant distance l _1. Reference numeral 56 is a guide bush.

FIG. 12 is an enlarged view of the Z portion in FIG. 11, and 23 in the drawing is a space portion for molding. This space 2
Reference numeral 3 denotes a space portion 23a for molding the sash body 101a having a substantially U-shaped cross section, and bent portions 101b, 101b which are integrally formed on both side edge portions of the sash body 101a over substantially the entire length thereof and which are bent inward. It is composed of the space portions 23b, 23b to be molded. Dimension a in FIG.
The sash body 101 that engages with the step portion 45a of the lock 45
It is the dimension of the engaging portion of the bent portion 101b of a. Above
A connecting guide pin pushed out by the urging force of the spring 55.
The moving distance l ₁ (see FIG. 16) of the carriage 54 is the above-mentioned bent portion.
The size is larger than the dimension a of the engaging portion of 101b. did
Then, the sash body 1 is formed by the push-up block 45.
When 01a is pushed up, the bent portion 101b is movable.
It is designed to be separated from the mold 22. The fourth and fifth push-up mechanisms 64 and 65 have the same structure and are configured as shown in FIG.

That is, reference numeral 71 in the drawing denotes a recess formed in the movable mold 22, and in this recess 71, a push-up block base 73 is provided.
Is stored. The push-up block 45 is fixed to the push-up block base 73 by a fixture 74. A pair of slide cores 78, 78 are mounted on the push-up block base 73.
Are slidably arranged. Further, stoppers 79, 79 are provided on the side portions of the slide cores 78, 78, and these stoppers 79, 79 are provided with springs 80, 80 for reducing a load on angular pins 82, 82 described later. It is energized.

A cotter block 8 is attached to the fixed mold 21.
The angular pins 82, 82 are provided so as to project in an inclined manner via 1, 81. This angular pin 82,
Reference numeral 82 is inserted into through holes 83, 83 formed in the slide cores 78, 78 with an inclination. The push-up block base 73 is connected to the first push-out plate 32 via a connection guide pin 84. Reference numeral 85 is a guide bush. Further, the sixth and seventh push-up mechanisms 66, 67 described above.
Have the same structure and are configured as shown in FIG. That is, reference numeral 91 in the drawing denotes a recess formed in the movable mold 22, and a push-up block 45 is provided in the recess 91. The push-up block 45 is connected to the first push-out plate 32 via a connection guide pin 94. Reference numeral 95 is a guide bush.

FIG. 15 shows Y of the molding space 23 in FIG.
In order to make it easier to take out a molded product, this portion is shown in an enlarged manner, and the bent portion 101b has no space for molding.

When molding the door sash, the movable mold 22 is moved to be joined to the fixed mold 21, and then the melted plastic material is injected from an injection nozzle (not shown). The injected molten plastic material is caused to flow through the spool 26 and the runner 41, and is further supplied from the runner 41 into the molding space 23 between the fixed mold 21 and the movable mold 22. The molten plastic material supplied into the molding space 23 is the mold 2
By cooling 1 and 22, the door sash 101 as a resin molded product is obtained. Door sash 1
After 01 is molded, the movable mold 22 moves and is separated from the fixed mold 21.

With the movement of the movable mold 22, the first and second extruding plates 32 and 33 provided in the recess 31 of the mounting plate 30 are urged by the coil spring 55 to urge them as shown in FIGS. As indicated at 17, the distance is advanced by l ₁ .
By this forward movement, the push-up block 45 is pushed out via the connecting guide pins 54, 84, 94. This push-up block
The sash body 101a is pushed by pushing
And the bent portion 101b is separated from the movable mold 22.
Be done.

When the movable die 22 is further separated, the slide core 48 is moved in the arrow direction by the angular pin 52 as shown in FIG. And
When the movable mold 22 moves a predetermined distance L, the slide core 4
8 moves a distance l _{2 and} comes into contact with the stopper 49 to stop. By the movement of the slide core 48, one bent portion 101b of the door sash 101 is pulled outward while being locked in the recess 48a of the slide core 48 and elastically deformed to be separated from the step portion 45a of the push-up block 45. It

At this time, as shown in FIG. 19, the slide cores 78, 78 are moved in the direction of the arrow by the angular pins 82, 82 and come into contact with the stoppers 79, 79 to stop. Due to the movement of the slide cores 78, 78, the bent portions 10 on both side edges of the door sash 101 are
1b and 101b are recesses 78 of the slide cores 78 and 78.
While being engaged with a and 78a, they are pulled outward and elastically deformed, and separated from the stepped portions 45a and 45a of the extrusion block 45.

In this way, the slide cores 48, 78, 7
By the slide of 8, the bent portion 101b of the molded product 101,
After 101b is separated from the stepped portions 45a, 45a of the push-up block 45, the movable die 22 further moves to the retreat limit. Then, the push-out block 45 is pushed out by a push-out rod (not shown), and the operator manually removes the door sash 101 from the push-up block 45 in this state.

This door sash 101 is shown in FIGS.
As shown in, a sash body 101a having a substantially U-shaped cross section,
Bent portions 101b integrally formed inward on both side edges of the sash body 101a over substantially the entire length thereof,
And 101b. Incidentally, in order to make it easy to take out a part of the sash body 101a, as shown in FIG. 21, the sash body 101a has no bent portion 101b.

As described above, the bent portion 1 which is bent inward on both side edges of the sash body 101a over substantially the entire length thereof.
01b and 101b are formed, and these bent portions 101b and 1b are formed.
Since 01b is engaged with the door frame (mounting body) of the automobile, when the door sash 101 is mounted, the joint area with the door frame is significantly increased, and the mounting strength is improved.

In addition, the movable die 22 has a slide core 48,
78, 78 are provided, and these slide cores 48, 78, 7
By sliding 8 the bent portion 10 of the door sash 101
In order to pull 1b and 101b outward and elastically deform them to separate them from the step portions 45a and 45a of the push-up block 45,
Door sash 10 having an inward bent portion over substantially the entire length
Even in the case of 1, molding is possible.

[0039]

As described above, the present invention has a movable mold.
The opening force of the pushing member of the pushing means
After separating the bent part of the molded product from the movable mold,
Move the rider to elastically deform the bent part of the molded product outward.
Since it is released from the step of the extruded member, bending of the molded product
It is not name that part contacts the movable mold.

Therefore, extrusion can be performed without damaging the molded product.
It can be detached from the step of the means.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a molding die that is an embodiment of the present invention.

FIG. 2 is a plan view showing a movable mold forming the molding mold of FIG.

FIG. 3 is a sectional view taken along line P-P in FIG.

FIG. 4 is a sectional view taken along the line QQ in FIG.

FIG. 5 is a plan view showing a push-up block provided in the movable mold in FIG.

6 is a sectional view taken along line HH in FIG.

FIG. 7 is a sectional view taken along line GG in FIG.

FIG. 8 is a sectional view taken along line I-I in FIG.

9 is a sectional view taken along line MM in FIG.

10 is a sectional view taken along line NN in FIG.

11 is a sectional view taken along the line DD of FIG.

FIG. 12 is an enlarged sectional view showing a Z portion in FIG.

FIG. 13 is a sectional view taken along line FF of FIG.

FIG. 14 is a sectional view taken along line EE in FIG.

FIG. 15 is an enlarged sectional view showing a Y portion in FIG.

16 is a cross-sectional view taken along line D-D of FIG. 2 and is an explanatory view showing a state in which the movable mold is slightly separated from the fixed mold.

FIG. 17 is a cross-sectional view taken along the line FF of FIG. 2, illustrating a state in which the movable mold is slightly separated from the fixed mold.

FIG. 18 is a cross-sectional view taken along the line D-D of FIG. 2, illustrating a state in which the movable mold is largely separated from the fixed mold.

19 is a cross-sectional view taken along the line FF of FIG. 2 and is an explanatory view showing a state in which the movable mold is largely separated from the fixed mold.

20 is a plan view showing a door sash molded by the molding die of FIG. 1. FIG.

21 is a cross-sectional view taken along the line JJ in FIG.

22 is a sectional view taken along line KK in FIG.

FIG. 23 is a plan view showing a conventional door sash.

FIG. 24 is a cross-sectional view taken along the line BB in FIG.

FIG. 25 is a cross-sectional view taken along the line AA in FIG.

FIG. 26 is a sectional view showing a conventional molding die.

27 is a sectional view taken along the line YY in FIG.

28 is a sectional view taken along line ZZ in FIG.

FIG. 29 is a sectional view taken along line XX in FIG. 28.

[Explanation of symbols]

21 ... Fixed mold, 22 ... Movable mold, 23 ... Space part, 45
... push-up block (extruding means), 45a ... step, 48a,
Reference numeral 78a ... Recessed portion (engagement portion), 48, 78 ... Slide core (slider), 52, 82 ... Angular pin (slider moving means), 101a ... Molded article body, 101b, 10
1b ... Bent part.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location // B29L 31:30 (72) Inventor Fumio Ishikura 2 Kirihara-cho, Fujisawa-shi, Kanagawa Shiroki Industry Co., Ltd. (72) Inventor Noriyuki Hashimoto No. 2 Kirihara-cho, Fujisawa-shi, Kanagawa Shiroki Industry Co., Ltd. (56) Reference JP-A-56-154320 (JP, A) Actually opened 63-41531 (JP, U) Actually opened Sho 63-104013 (JP, U) Actual opening 61-111712 (JP, U) Actual opening Sho 50-72759 (JP, U) Actual opening Sho 51-3677 (JP, U)

Claims (1)

[Claims] 1. A fixed mold and a contact / separation of the fixed mold.
It is installed so that it can move freely in the direction
Both the molded product body and the molded product body that have a generally U-shaped surface
It does not consist of a bent part that is molded integrally with the side green part and bends inward.
And the movable mold for molding a molded article that, et provided on the movable mold
And having a step portion that engages with the bent portion of the molded product, after molding,
As the movable mold is opened, it is moved forward by the biasing force of the biasing member.
The molded product is separated from the movable mold by a predetermined distance in the direction of the fixed mold.
Extrusion that pushes out and separates the bent part from the movable mold
Means and the movable mold with respect to the extrusion direction of the extrusion means.
The molded product is provided so as to be slidable in a substantially orthogonal direction.
A slider having an engagement portion engaged with the bent portion of the press
The molded product is extruded a predetermined distance by the ejecting means, and the bent portion is
After separating from the movable mold, move the slider
The molded product is moved along with the further opening movement of the mold.
Elastically deform the bent part of the
And a slider moving means for removing the slider from the mold.