JP3249658B2 - Filler device for foam molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a filler device for a foam molding machine.

[0002]

2. Description of the Related Art At present, with the diversification of demand, production of many kinds and small lots is becoming mainstream. In order to respond to the demands of such an era in a foam molding machine, the number of mold exchanges has been increased, and therefore, a reduction in mold exchange time and the convenience of handling the molds have been required. The largest operation in the mold exchange time is the installation of the filler (filling gun) (B ') and the connection of the piping. For example, one mold (3 ')
(B ') is attached about 8 to 20 pieces, but the filler (B') usually has one bead feeding hose (40 ') and the filling air (26')
In addition, three or four air tubes (32 ') (33') of nylon tubes used for opening and closing operations are required, such as beads feeding hose (40 ') and tubes (26') (32 ') (33' Even if) is a one-touch connection, it was necessary to spend a lot of time just attaching and detaching these.

[0003] In order to achieve this demand, the inventors proposed a split type filler in which the filler (B ') itself was made to be a one-touch type in Japanese Patent Application Laid-Open No. 3-205136 instead of a pipe portion. In this case, as shown in FIGS. 7 and 8, a filler sleeve (2 ') protrudes from the back surface of a mold (3'), and a nozzle piece (7 ') also extends from a tip portion of the filler body (5'). It was protruding.

As can be seen from FIGS. 7 and 8, the filler body (5 ') has a long cylinder body (31') attached to its rear end, and from the front end, as described above, the nozzle piece (31). 7 ') is protruding, so it is divided as described above, but the overall length is very long, and it is difficult to attach or remove the filler body (5') at the place where many other devices are installed. There was a problem that it took time for things. Other, nozzle piece
Since (7 ') is separate from the filler sleeve (2'), depending on the mounting state of the filler (B '), the compressed air flow composed of the filler sleeve (2') and the nozzle piece (7 ') Gap
As a result, the compressed air ejected from the bead feeding air nozzle hole (23 ') was biased, and the raw material beads (14') were unevenly filled in the cavity (1 ').

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional example, and the object thereof is to further reduce the overall length of the filler body so that it can be handled in a place where many obstacles are present. It is an object of the present invention to provide a filler device for a foam molding machine which is excellent in performance, does not cause unevenness in a gap for compressed air flow, and always uniformly fills a cavity with raw material beads.

In order to solve the above problems, the filler device for a foam molding machine according to the present invention comprises: (1a) a filler mounting cylinder (C) mounted on a mold (3) side;
And a filler book to be detached from the filler mounting cylinder (C).
And a filler device for a foam molding machine composed of a body (5).
Te, (1b) Filler mounting cylinder (C) is mounted on the non-parting plane of the mold (3) so as to communicate with the projecting and the mold cavity (1) from the non-parting plane of the mold (3) Cylindrical mold-side filler sleeve (2) and mold-side filler sleeve (2)
And a nozzle piece (7) forming a compressed air flow gap (24) between itself and the inner peripheral surface of the mold-side filler sleeve (2), (1c) On the free end side of the mold-side filler sleeve (2)
The compressed air introduction hole (16) to the compressed air flow gap (24) is shaped
Made, (1d) the pressure on the insert rear side end portion of said nozzle piece (7)
Pressure from compressed air flow gap (24) toward cavity (1)
A bead feed air nozzle hole (23) for compressed air ejection is formed.
And, (2a) to the filler body (5), the filler mounting cylinder (C)
The sleeve insertion recesses (6) into which are inserted and fixed , (2b) communicate with the nozzle piece (7) of the filler mounting cylinder (C) mounted in the sleeve insertion recess (6), and the raw material beads (1
4) A bead feed hole (9) for supplying the cavity (1) to the cavity (1) , (2c) a compressed air introduction hole (16) for the filler mounting cylinder (C).
, A compressed air supply through-hole (25) for supplying compressed air to the compressed air flow gap (24) is formed, and (2d) the filler body (5) has a sleeve insertion recess ( Attach to 6)
Is mounted coaxially with the nozzle piece (7) of the filled filler mounting tube (C), enters and exits the nozzle piece (7) and opens the opening to the cavity (1) of the filler mounting tube (C). -It is characterized by having a piston rod (30) for closing.

[0007]

When the lot of the foamed molded article is switched, the male and female molds (3) and (11) must be replaced. First, the engaged portion (4) provided on the mold-side filler sleeve (2) Then, the engagement of the filler body (5) with the engaging portion (10) is released, and the sleeve insertion recess (6) is released from the filler mounting tube (C). Next, the male and female molds (3) and (11) including the filler mounting cylinder (C) are removed, and the male and female molds (3) and (11) for the next lot are removed.
Is mounted on a foam molding machine (A). The filler insertion recess (6) of the filler body (5) is fitted into the filler mounting cylinder (C) of the new cavity mold (3), and both are fixed. Such an operation is performed for the number of the filler mounting cylinders (C). The filler body (5) is connected with hoses such as a drive hose (29), an air hose for bead injection (26), and a bead feeding hose (40).
(5) The filler (B) can be attached and detached only on the side, eliminating the need to attach and detach complicated hoses. Filler body at the same time
The nozzle piece (7) does not protrude from the filler insertion recess (6) of (5), and the overall dimensions of the filler (B) are much shorter and easier to handle than conventional ones. When the mounting of the filler (B) on the mold (3) is completed as described above, the raw material beads (14) are supplied. At this time, in the filler mounting cylinder (C), since the nozzle piece (7) is integrally fixed in the mold-side filler sleeve (2), the filler
Regardless of the mounting state of (B), the compressed air flow gap (24)
The compressed air is always blown out from the bead feeding air nozzle hole (23) without deviation, and the raw material beads (14) are evenly filled in the cavity (1). When the supply of the raw material beads (14) is completed, high-temperature steam is supplied to the steam chamber (15) of the molds (3) and (11), and the raw material beads (14) are heated and foamed to form the cavity (1). Obtain body (36). After allowing the foamed molded body (36) to cool for an appropriate time, the core mold (11) is opened from the parting surface, and the eject mechanism is opened.
By operating (34), the foam molded article (36) is protruded from the cavity (1) to take out the foam molded article (36).

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 is a front view of a foam molding machine (A) to which a filler body (5) according to the present invention is applied, and FIGS.
It is a drawing regarding (5). A movable-side core mold (11) and a fixed-side cavity mold (3) are provided in the main body of the foam molding machine (A), and are attached to tie bars (37) provided therearound. The core mold (11) comes into contact with and separates from the cavity mold (3).

The cavity mold (3) is composed of a cavity mold (12) and a back plate (13a) constituting an inner surface of the mold, and a side plate (not shown) connecting the both. It is a steam room (15). The mold-side filler sleeve (2) penetrates the steam chamber (15) and opens to the cavity mold (12),
Filler sleeve fixed body attached to back plate (13a) (1
Fixed at 7).

The mold-side filler sleeve (2) is composed of a cylindrical filler sleeve body (2a) and an engaged portion (4), and protrudes from the back plate (13a) of the cavity mold (3). ing. The engaged portion (4) is fitted around the outer periphery of the protruding end of the filler sleeve body (2a). The tip of the engaged part (4) fits into the sleeve insertion recess (6), and the tip abuts on the deep tapered part (5a) of the sleeve insertion recess (6) to allow centering. An engagement groove (4a) is formed in the outer periphery of the base so that an engagement ball (20a) described later fits therein. In this embodiment, a separate engaged portion (4) is integrally attached to the projecting end of the filler sleeve body (2a), and a compressed air introduction hole (16) is provided at the tip of the engaged portion (4). Is formed, but of course is not limited to this, the engaged portion (4) and the filler sleeve body (2a)
May be constituted by one component, or the filler sleeve main body (2a) may be lengthened, and the engaged portion (4) may be formed only of the engagement concave groove (4a).

A nozzle piece is provided in the filler sleeve (2).
(7) is provided and integrally fixed, the rear end of the nozzle piece (7) is fixed to the free end of the filler sleeve (2), and the inner end of the nozzle piece (7) is filled with filler. The tapered inner peripheral surface (22) formed in the inner part of the sleeve (2) is fixed to the inner surface. The mold-side filler sleeve (2) passes through an annular gap (24) generated between the inner peripheral surface (22) of the mold-side filler sleeve (2) and the outer peripheral surface of the nozzle piece (7). The incoming air is blown into the inside. This incoming air is the sleeve insertion recess (6)
The air is supplied from a bead jetting air hose (26) connected to a compressed air supply through hole (25) communicating with the bottom of the bead.

Although the filler sleeve fixed body (17) is not particularly limited, it is of a split fastening type as shown in FIG. 4, and the legs (18) are bolted to the back plate (13a).
In 9), the mold-side filler sleeve (2) is tightened and fixed. Core mold (11) and cavity mold (3)
A packing (not shown) is interposed on the outer periphery of the parting surface to prevent steam leakage.

As shown in FIG. 2, a sleeve insertion recess (6) is formed in the center of the front surface of the filler body (5), and a double-acting cylinder (8) is provided at the rear of the filler body (5). Is mounted coaxially with the nozzle piece (7), and the piston rod (30) enters and leaves the nozzle piece (7). The piston rod (30) is connected to the forward air hose (32) attached to the rear end of the cylinder cylinder (31) and the cylinder cylinder.
It is driven by a retreat air hose (33) attached to the front end of (31). These forward air hoses (32)
And the retraction air hose (33) are the drive hose (29).

Further, a bead feeding through hole (9) is formed diagonally to the filler body (5). As shown in FIG. 1, the bead feeding hose (40) is connected to the hoch (41) and the bead feeding hose (40). It is connected with the through hole (9) for particle sending.

[0015] (20) is a sleeve holding cylindrical portion attached to the forming portion (6a) of the sleeve insertion recess (6) of the filler body (5),
Ball holding hole (20b) drilled in sleeve holding cylinder (20)
An engagement ball (20a) is inserted and held in the connector. (27) is a slider slidably fitted on the outer periphery of the sleeve holding tubular portion (20), and a slide inner convex portion (27a) is protruded on the inner peripheral surface, and the slide inner convex portion (27a) is provided. An elastic body (39) {between the step and the step of the sleeve holding cylinder (20) {in this case, a coil spring. } Is provided, and the protrusion inside the slide (27a)
Coincides with the holding portion of the engaging ball (20a).
a) is pressed inward of the sleeve holding tube (20). (Of course, the engaging portion (10) and the engaged portion (4) are not limited to the above-described configuration.
Any structure may be used. )

Thus, in the foam molding, the dies (3) and (11) must be exchanged when switching lots.
First, the slider (27) is moved rightward in FIG. 2 against the elastic body (39). Then, the slide inner protrusion (2) of the slider (27)
7a) is disengaged from the position of the engaging ball (20a) and
0a) is released, the engagement ball (20a) is disengaged from the engagement with the engagement groove (4a), and the filler body (5) is pulled out from the mold-side filler sleeve (2). At this time, the raw material beads (14) in the bead feeding hose (40) are blown back to the hopper (4
The sleeve insertion recess of the filler body (5) returned to 1)
There is no spouting of the raw material beads (14) from (6).

Next, the molds (3) and (11) including the mold-side filler sleeve (2) are removed, and the mold for the next lot is removed.
(3) Attach (11) to the foam molding machine (A), and attach the sleeve insertion recess (6) of the filler body (5) to the filler insertion tube (C) of the new cavity mold (3). At this time, slider (27)
To the right side in the figure against the elastic body (39),
At the place where (20a) is released, insert the sleeve insertion recess (6) of the filler body (5) into the new mold-side filler sleeve (2), and then the elasticity of the elastic body (39) By slider (27)
Is moved to the left in the figure. Then, the engaging ball (20a) fits into the engaging concave groove (4a) of the engaged portion (4), and the engaging portion (10) and the engaged portion (4) are engaged and fixed with one touch. Will be. Such an operation is performed by the number of the filler insertion tubes (C).

At the time of molding, the tip of the filler insertion tube (C) is opened by retracting the piston rod (30), and the raw material beads (14) are filled. At the same time, bead feeding air is supplied, and the air is blown out from the bead feeding air nozzle hole (23) to supply the raw material beads (14) into the mold cavity (1). At this time, since the nozzle piece (7) is integrally fixed separately from the filler (B) in the mold-side filler sleeve (2) of the filler mounting cylinder (C), the filler (B) is Irrespective of the mounting state, no deviation occurs in the compressed air circulation gap (24), and uniform compressed air is always blown out from the bead feeding air nozzle hole (23), and the raw material beads (14) are cavities (1).
Fill evenly.

When the supply of the raw material beads (14) is completed, the piston rod (30) is advanced again so that the mold-side filler sleeve is formed.
The tip of (2) is closed, and the supply of the raw material beads (14) is stopped.
Subsequently, high-temperature steam is supplied to the steam chamber (15) of the molds (3) and (11), and the raw material beads (14) are heated and foamed to obtain a foam molded body (36) having the shape of the cavity (1). After cooling the foam molded body (36) for an appropriate time, the core mold (11) is opened from the parting surface, and the eject mechanism (34) is operated to remove the foam molded body (36) from the cavity (1). Extrusion, foam molding (36)
Take out. The foam molding (36) is taken out and the cavity
When (1) is empty, the core mold (11) is closed, and the previous molding step is repeated to continuously mold the foamed molded body (36).

Here, the cavity is formed by the foam molding (36).
Although the depth of (1) is various and the thickness of the molds (3) and (11) is also various, the filler main body is attached to the protrusion from the back plate (13a) of the filler mounting cylinder (C). It is only necessary to attach the sleeve insertion recess (6) of (5). And the filler body (5)
Has a drive hose (29), a bead injection air hose (26),
Since the hoses such as the bead feeding hose (40) are connected in a concentrated manner, the attachment / detachment of the filler at the time of mold replacement is completed only by the attachment / detachment of the filler body (5).

[0021]

According to the present invention, first, the mold is replaced together with the mold-side filler sleeve, and the sleeve insertion recess of the filler body is simply inserted into the filler mounting cylinder mounted on the new mold. This completes the connection, so there is no need to adjust the insertion allowance as in the past, and there is no need to attach or remove hoses, making it very easy to connect the filler body. Work can be greatly reduced.

Further, since the nozzle piece is integrally mounted in the filler sleeve, the gap for compressed air circulation formed by the filler sleeve and the nozzle piece is kept constant, regardless of the attachment / detachment of the filler. The compressed air ejected from the inlet air nozzle hole is always kept constant, and the raw material beads are not unevenly filled in the cavity.

In addition, as described above, since the nozzle piece is integrally mounted in the filler sleeve and is not mounted on the filler body side, the overall length of the filler is shortened accordingly, and the cavity mold in which various devices are installed. The operation of attaching and detaching the filler at the back of the vehicle becomes very easy.

[Brief description of the drawings]

FIG. 1 is a front view of a foam molding machine according to the present invention.

FIG. 2 is a cross-sectional view of a filler body and a filler sleeve according to the present invention before being mounted.

FIG. 3 is a cross-sectional view after mounting a filler body and a filler sleeve according to the present invention.

FIG. 4 is a front view of a fixed body of a filler sleeve used in the present invention.

FIG. 5 is an enlarged sectional view of the vicinity of a bead feeding air nozzle hole of the present invention.

FIG. 6 is an enlarged sectional view of the vicinity of a compressed air introduction hole according to the present invention.

FIG. 7 is a cross-sectional view of a conventional filler body, a mold-side filler sleeve, and a state before mounting.

FIG. 8 is a cross-sectional view of a conventional filler body, a mold-side filler sleeve, and a mounted state.

[Explanation of symbols]

 (A) ... foam molding machine (B) ... filler for foam molding machine (1) ... cavity (2) ... mold-side filler sleeve (3) ... cavity mold (4) ... engaged part (5) ... filler Body (6)… Sleeve insertion recess (7)… Nozzle piece (9)… Bead feed hole (10)… Engagement part (14)… Raw material bead (16)… Compressed air introduction hole (23)… Bead nozzle air nozzle hole (24) ... Gap for compressed air flow (30) ... Piston rod

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 44/00-44/60 B29C 67/20

Claims (1)

(57) [Claims] 1. A filler attached to a mold side.
A mounting tube, and a filler detached from the filler mounting tube.
-Filler for foam molding machine composed of
The filler mounting cylinder includes a cylindrical mold-side filler sleeve mounted on the non-parting surface of the mold so as to protrude from the non-parting surface of the mold and communicate with the mold cavity. A nozzle piece that is integrally inserted into the filler sleeve and forms a gap for compressed air flow between itself and the inner peripheral surface of the mold-side filler sleeve, the free end side of the mold-side filler sleeve The compressed air flow
A compressed air introduction hole is formed in the passage gap, and the compressed air flow is provided at the inner end of the nozzle piece.
Bead for jetting compressed air from the gap to the cavity
'S feed and incoming air nozzle hole is formed, the filler body is in communication with the sleeve insertion recesses filler mounting tube is inserted fixed, the nozzle piece of the filler mounting tube attached to the sleeve insertion recesses , the raw material beads beads supplied to the cavity feed grain for hole communicates with the compressed air introduction hole of the filler mounting cylinder, the compressed air supply hole for supplying compressed air to the gap portion for compressed air flow is formed And the filler body is a sleeve
It is necessary to have a piston rod that is mounted coaxially with the nozzle piece of the filler mounting cylinder mounted in the insertion recess, and that moves in and out of the nozzle piece to open and close the opening to the cavity of the filler mounting cylinder. Characteristic filler device for foam molding machine.