JPS6157170B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to the use of plastic or other materials on the surface of extrusion-molded shapes used as metal or other sash frames.
This relates to an apparatus for injection molding molten metal such as rubber.

As shown in FIG. 1, a conventional device of this type has a casting space 5 formed between a casting groove 4 of the upper mold 2 and a surface of the member 1 by placing an upper mold 2 and a pedestal 3 on both sides of a member 1, respectively. It is known that the molten metal is poured into the mold through the hole 6, cooled and solidified, and then released from the mold.

In the case of this equipment, although it is possible to injection mold in relatively accurate positions on the surface of parts formed by machine processing or parts formed by press processing, When using products with lower dimensional accuracy than processed or pressed products, it is not possible to set each member in the mold in the same way.
The problem is that injection molding cannot be performed accurately in a predetermined position. In addition, when injection molding the molten metal 7 on a limited part of the surface of the member 1 as shown in FIG. In the case of injection molding so as to obtain a certain distance S, a sufficient distance S' can be obtained between the end 4a of the casting groove of the upper mold 2 and the side edge 1a of the member. Beautiful injection molding without leakage can be achieved even if the set position is slightly deviated, but by using a material with difficult dimensional accuracy such as an extruded mold material, the side edge 1'a of the member 1 as shown in Fig. 3a and b is used. When injection-molding the molten metal 7 over almost the entirety of the other end edge 1''a, between the end 4a of the casting groove of the upper die 2 and both ends 1'a, 1''a. Since there is almost no gap between them, as described above, even if the set position of the member 1 is slightly shifted, the end 4a of the casting groove 4 and the side edge 1'' of the member 1 will be separated as shown in FIG.
A small gap 8 is formed between the casting space 5 and the casting space 5, and the molten metal press-fitted into the casting space 5 leaks out of the gap 8 (arrow A), resulting in a problem that beautiful injection molding cannot be performed. This similarly occurs when injection molding is performed from one side edge 1''a of the member 1 to the intermediate portion as shown in FIG. 3c.

The present invention has been devised in view of the above-mentioned circumstances, and its purpose is to position and accurately set the shaped material in a predetermined position of the mold, and to accurately injection mold the molten metal into the predetermined position on the surface of the part. In addition, even when injection molding is carried out almost entirely from one side edge of a shape to the other side edge, or when injection molding is carried out from one side edge of a part to the middle part, the mold can be beautifully maintained without leaking in the specified position. An object of the present invention is to provide a molten metal injection molding device for injection molding onto the upper surface of a shape.

Embodiments of the present invention will be described below with reference to FIG. 5 and subsequent figures.

FIG. 5 is a divided perspective view of a vertical frame 9 and a horizontal frame 10, which are the sections of the sash window frame.
1 has a shape in which one side fin 12, the other side fin 13, and first, second, and third intermediate fins 14, 15, 16 are integrally formed, and a horizontal frame 10 serving as a shape member.
has a step-like bent shape, and the ends of each fin 12, 13, 14, 15 of the vertical frame 9 are notched to match the shape of the horizontal frame 10, and the plate-like main body 11
The end portion 11a of the plate-like main body 11 is also trimmed, and a sealing material A having approximately the same cross-sectional shape as the horizontal frame 10 is placed near the end portion of the plate-like main body 11 on one side edge 9a of the vertical frame.
It is injection molded over the other side edge 9b.

FIG. 6 is an overall front view of the apparatus for injection molding the sealing material A onto the vertical frame 9, in which the substrate 20 and the upper plate 21 are
A machine frame 23 is constructed by connecting these with a support 22.

A mounting base 24 is provided on the board 20, and the mounting base 2
4 is provided with a lower die 25, and a pair of guide columns 26 are erected and fixed, and a cylindrical body 28 of a movable plate 27 is fitted to each guide column 26 so as to be vertically slidable. It is supported so as to be vertically movable with respect to the mounting base 24, and is held upward by a compression spring 29.

The movable plate 27 is provided with an upper mold 30 facing the lower mold 25. On the other hand, the cylinder 3 fixed to the upper plate 21
A support rod 33 is fixed to the tip of the first piston rod 32, and a spring 34 is provided between the tip end step 33a of the support rod 33 and the movable plate 27.

The spring 34 is stronger than the spring 29 and holds the movable plate 27 in the standby position shown.

35 is a gun for injecting molten metal, and the support rod 33
The injection part (nozzle) 35a is connected to the movable plate 27.
It is fixed so as to face the hole 36 (FIG. 7). The hole 36 communicates with a hole 37 in the upper mold 30 and is connected to a casting groove 38 .

Reference numeral 40 denotes a pressing mechanism installed between the mounting base 24 and the movable plate 27, and a pressing rod 43 is inserted into the horizontal hole 42 of the fixed block 41 fixedly installed on the mounting base 24.
The cam piece 45 of the cam block 44, which is slidably inserted and supported toward 5 and fixed to the movable plate 27, is brought into contact with the cam piece 46 of the press rod 43, and the press rod 43 is pressed against the lower die 25 by the compression spring 47. The force is maintained toward the target.

In other words, the cam block 4 is attached to the fixed block 41.
A vertical groove 48 is formed in which 4 is fitted so as to be vertically movable,
A cam piece 46 is integrally formed on the rear end portion of the pressing rod 43 that protrudes from the horizontal hole 42, and the upward cam surface 45a of the cam piece 45 abuts against the downward cam surface 46a of this cam piece 46, thereby blocking the cam block. When the lever 44 moves upward, the pressing rod 43 moves against the force of the spring 47. Upper surface 43 of the front end of the pressing rod 43
a (FIGS. 7 and 12) is substantially flush with the upper surface of the plate-like main body 11 of the vertical frame 9 inserted into the lower mold 25. As shown in FIGS. 8 and 9, the lower mold 25 is
The longitudinal end surface 9c of the vertical frame 9 is placed on the upper part of the main body 25a.
The stopper surface 50 that comes into contact with the other end edge 9 of the vertical frame 9
b (that is, the other side fin 13) comes into contact with the pressure receiving surface 5
1. It is equipped with a receiving surface 52 on which the plate-like main body 11 is placed, and the receiving surface 52 has a third intermediate fin 16.
and the first and second grooves 5 into which the other side fin 13 fits.
4,55 are formed. 56 is a chamfer formed at the corner of the main body 25a to facilitate insertion of the vertical frame 9, and 57 is a chamfer formed at the entrance side of the grooves 54, 55 to facilitate insertion of the third and other side fins 16, 13. It is a chamfer.

As shown in FIG. 10, the upper mold 30 has one side surface 60 that comes into contact with the stopper surface 50 of the lower mold 25;
Concave grooves 61, 61', 61'' that accommodate the fins 12, 14, 15 of the vertical frame 9, and the pressure receiving surface 51 of the lower die 25.
The casting groove 38 has the same shape as the sealing material A, and one end has an opening 38a in the one end surface 62. That is, when the one end 38a of the casting groove 38 coincides with the other end edge 9b of the vertical frame 9, the other end 38b matches the one end edge 9a of the vertical frame 9.
It's starting to match. Note that 38c is a cylindrical protrusion formed within the casting hole 38 to form a screw hole A' (see FIG. 5).

Therefore, the piston rod 32 of the cylinder 31
When the movable plate 27 is placed in a standby state by pulling up the support rod 33, the upper mold 30 and the lower mold 25 are separated, and the cam block 44 moves upward so that the cam surface 45a of the cam piece 45 is brought into contact with the cam piece 46. Cam surface 46a
The pressing rod 43 moves against the spring 47, and its pressing surface 43b touches one end surface 5 of the lower mold 25.
Stay away from 3.

In this state, as shown in FIG. 9, the vertical frame 9 is inserted into the lower mold 25 from the direction of the arrow B using the air cylinder B, and the end surface 9c is pressed against the stopper surface 50 as shown in FIGS. 11 and 12 for injection molding. hold until the end. Then, by extending the piston rod 32 of the cylinder 31 and pushing down the support rod 33, the movable plate 27 is pushed down via the spring 34.

As a result, the cam block 44 descends and the cam surfaces 45a and 46a tend to separate, so the pressing rod 43 is moved toward the lower mold 25 by the spring 47, and the pressing rod 43 is pressed as shown in FIGS. 13 and 14. Surface 43
b comes into contact with the fin 12 on one side of the vertical frame, and the other side edge 9b of the vertical frame comes into contact with the pressure receiving surface 51 of the lower mold 25, so that the vertical frame 9 is positioned at a predetermined position on the lower mold 25 and set accurately.

Then, when the movable plate 27 further descends, the upper die 3
0 descends along the stopper surface 50 and the pressure receiving surface 51 of the lower mold 25 and reaches the surface of the vertical frame body 11 and the pressing rod 43.
The open end 38a of the casting groove 38 is pressed against the upper surface 43a and is closed by the pressure receiving surface 51 of the lower mold 25, so that the casting groove 38, the surface of the vertical frame body 11, and the lower mold 2
A casting space 63 is formed between the pressure receiving surface 51 of No. 5 and the pressure receiving surface 51 of No. 5. In this case, if the vertical frame 9 is formed to the designed dimensions, the casting groove 3
8 coincides with the other side edge 9b of the vertical frame 9, and the other end 38b coincides with the one side edge 9b of the vertical frame 9.
Matches a.

After a little delay in this mold tightening, nozzle 35 of gun 35
a fits into the hole 36 of the movable plate 27, and the molten metal flows through the hole 3.
6. Inject the sealing material A into the casting space 63 through the hole 37 to form the sealing material A, which is an injection molded molten metal.

At this time, both ends 38a and 38b of the casting groove 38
As mentioned above, the sealing material A is aligned with both side edges 9b and 9a of the vertical frame so that there is no gap, so the sealing material A is placed in a predetermined position from the one side edge 9a of the vertical frame 9 to the other side edge 9b. Beautiful injection molding can be performed without any process.

On the other hand, if the vertical frame 9 is formed to be slightly smaller than the design dimension, as shown in FIG.
b match, and the other end 38b of the casting groove 38 and the one side edge 9a of the vertical frame 9 do not match, leaving a gap 39 between them.
occurs. However, this gap 39 is closed by the upper surface 43a of the pressing rod 43 and does not cause any leakage, and the discrepancy between the other end 38b and one edge 9a is slight, so in this case as well, as mentioned above, Injection molding can be done almost the same way as in the case of .

Also, when the vertical frame 9 is formed slightly larger than the design dimension, the other end 38b of the casting groove 38 and one side edge 9a of the vertical frame 9 do not match, but the 17th
As shown in the figure, there is no gap between the two, and the discrepancy between the two is slight, so injection molding can be performed in this case as well, almost in the same way as in the previous case.

FIG. 18 is a cross-sectional view of the main part of the second embodiment, which is an apparatus used for injection molding the sealing material 7 from one edge 1''a of the member 1 to the middle part as shown in FIG. 3c. This example differs from the previous example in that the casting groove 38' of the upper mold 30' is formed to have a length corresponding to the length from the other end edge 9b of the vertical frame 9 to the middle part, and the remaining length is In other words, since the casting groove 38' of the upper mold 30' has a length corresponding to the length from the other end edge 9b of the vertical frame 9 to the middle part, the vertical frame 9 is smaller than the design dimension. A little haze, a little dust,
The other end 38'b of the casting groove 38 is large and smooth.
There is no need to make the upper surface 43a of the pressing rod 43 the same as the upper surface of the vertical frame 9, even if it deviates from the one side edge 9a of the vertical frame 9.

In short, one end 38'a of the casting groove 38' and the pressure receiving surface 51 are made the same, the other end edge 9b of the vertical frame 9 and one end 38'a of the casting groove 38' are the same, and the stopper surface One side 9 in the longitudinal direction of the vertical frame 9 at 50
The casting space may be formed by regulating c.

19 and 20 are main part sectional views of the third embodiment, in which a concave groove 64 facing the other side fin 13 of the vertical frame is formed in the receiving surface 52' of the pedestal 25', and this one side wall 64a is
The other side fin 13 of the vertical frame comes into contact with the pressure receiving surface 51', and one end 3 of the casting groove 38'' of the upper mold 30''
8''a is aligned with the pressure receiving surface 51', and as shown in FIG. 20, the other end edge 9b of the vertical frame 9 is pressed against the pressure receiving surface 51' by the pressing rod 43 and positioned 9 and the other side edge 9b of the casting groove 3
Since the ends 38''a of the 8'' coincide with each other, beautiful injection molding can be performed without leaking hot water at a predetermined position, as in the case of the first embodiment. Note that 25'a and 52' correspond to 25a and 52 in the previous example.

21 to 23 are sectional views of main parts of the fourth embodiment. This example differs from the first example in that the pressing rod 43 is movable in the vertical direction. Specifically speaking, the horizontal hole 42a
is formed to be longer in the vertical direction than in the previous example, and a support plate 42b is supported in this hole so as to be movable in the vertical direction by a compression spring 42c. The pressing rod 43 is held between the support plate 42b and the upper surface of the horizontal hole by a spring 42c, and is supported so that its upper surface 43a is at a position slightly higher than the surface of the vertical frame inserted into the lower mold 25. Reference numeral 42d designates a pin vertically disposed on the movable plate 27 for pressing the pressing rod 43 downward, and its lower surface 42e is substantially flush with the lower surface of the upper mold 30. The rest of the structure is the same as that of the first embodiment, so a description thereof will be omitted. According to this example, in addition to the effects of the first embodiment, the following effects can be obtained. That is, since the vertical frame 9, which is a member, has variations not only in the width dimension but also in the thickness dimension, in the first embodiment, when using a vertical frame whose thickness is smaller than the design dimension, A slight gap may be formed between the mold and the vertical frame, and depending on the molten metal used, this may result in leakage, but according to this embodiment, the upper surface 43a of the pressing rod 43 is as shown in FIG. When the vertical frame 9 is pressed against the pressure receiving surface 51 as shown in FIG.
2d and the lower surface of the upper die against the spring 42c, there is no possibility of leakage between the upper die 30 and the vertical frame 9 even if the thickness of the vertical frame is formed smaller than the design dimension. No causative voids are created.

24 to 26 are sectional views of main parts of the fifth embodiment. In this example, only the upper mold 30'' is used, a pedestal 64 is arranged in place of the lower mold, and a pressure receiving plate 67 having a pressure receiving surface 51'' is provided between a step 65 and a guide plate 66 provided on the side thereof. It is attached so that it can move up and down, and is urged upward by a compression spring 68, so that its upper surface becomes a pedestal 64.
The only difference from the fourth embodiment is that the structure is set higher than the surface of the vertical frame 9 inserted into the fourth embodiment. After the pressure receiving plate 67 receives the vertical frame 9 pressed by the pressing rod 43 with its pressure receiving surface 51'' as shown in FIG. 25, it descends until its upper surface becomes flush with the surface of the vertical frame as shown in FIG. The lower surface of the upper mold 30 is pressed against the spring 688. Therefore,
This example can also provide the same effects as the fourth example.

27 to 29 are sectional views of essential parts of the sixth embodiment. In this example, instead of the structure related to the pressure receiving plate 67 of the fifth embodiment, a pressure receiving plate 69 is provided vertically on the side of the upper die 30, and its lower end extends to the upper side of the pedestal 70. After the pressure receiving surface 51 receives the vertical frame 9 as shown in FIGS. 28 and 29,
The upper mold 30 descends while being pressed against the other end edge 9b of the vertical frame until the lower surface of the upper mold 30 comes into contact with the vertical frame.

FIG. 30 is a perspective view similar to FIG. 9 showing the seventh embodiment, and shows an apparatus for injection molding a sealing material into a sealing material forming portion 71 formed in the middle portion of a vertical frame 9'. The stopper surface 50' is formed on the wall surface of an L-shaped block 72 that is separate from the lower mold 25'', and this L-shaped block is formed in the groove 7 formed on the mounting base 24.
3 with screws 74 so that the position can be adjusted freely.
The remaining points are the same as those in the first embodiment, so explanations will be omitted.

The present invention is as described above, and the shape can be positioned by the stopper surface and the pressure-receiving surface, and the pressure-receiving surface and one end of the casting groove are the same, and the other edge of the shape and one end of the casting groove are are the same, so even if there is some dimensional error in the shapes 9 and 9', they can be used as mold 2.
5, 25'', 30, 30', 30'', 30, and the molten metal can be accurately injection molded into the specified positions of the sections 9, 9'.
Even when molten metal is injection molded from one side edge 9a of 9' to the other side edge 9b, or when injection molded from the other side edge of the shape material to the middle part, there is a gap between the casting groove and the shape material. Since there are virtually no voids that can cause melt leakage, injection molding can be performed beautifully without leakage.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a conventional example, Figure 2 is a perspective view of a member in which molten metal is injection molded, and Figures 3 a, b, and c.
5 is a perspective view of a member in which molten metal is injection molded, FIG. 4 is an explanatory diagram of its defects, and FIG. 5 and subsequent figures show embodiments of the present invention. FIG. Fig. 6 is an overall front view, Fig. 7 is a side view of the lower mold and upper mold parts, and Fig. 8 is an exploded perspective view of the
Figure 9 is a perspective view of the lower mold, pressing mechanism, and vertical frame, Figure 10 is a cross-sectional view of the upper mold, and Figures 11 to 17 are operation explanatory diagrams. Figure 14 is XII of Figures 11 and 13
-XII line, - line sectional view, Figure 18 is a sectional view of the main part of the second embodiment, Figures 19, 20, 21
Figures, Figure 22, Figure 23, Figure 24, Figure 25,
Fig. 26, Fig. 27, Fig. 28, and Fig. 29 are sectional views of main parts of the third, fourth, fifth, and sixth embodiments, respectively, and Fig. 30 is Fig. 9 of the seventh embodiment. It is a similar perspective view. 9, 9' are members, 25, 25'' are lower molds, 30, 3
0', 30'', 30 are upper molds, 38, 38', 3
8″ is a casting groove, 40 is a pressing mechanism, 25′, 65,
70 is a cradle.

Claims (1)

[Claims] 1. The sections 9, 9' are crimped between the lower molds 25, 25'' and the upper molds 30, 30'.
Casting grooves 38, 3 formed at 25″, 30, 30′
In a molten metal injection molding device that injects molten metal between the upper surface of the shape member 8' and the shape member 9, 9', one end surface of the shape member is in contact with the other mold 30, 30', 25, 25''. The contacting stopper surface 50 and the other end edge 9 of the section
A pressure-receiving surface 51 is formed in contact with the casting grooves 38 and 38', and is located at the same position as one end of the casting grooves 38, 38'. Type 25, 25″,
30, 30', the upper surface of the shape, and the pressure receiving surface 51 form a casting space. 2 The pressing mechanism 40 has a pressing rod 43 that is slidable toward the pressure receiving surface 51, and the upper surface 43a of the front end thereof is a flat plane that is almost flush with the upper surface of the sections 9, 9' inserted into the mold. 2. A molten metal injection molding apparatus for molding an upper surface of a shape according to claim 1, wherein the apparatus is capable of sliding on the upper surface of a shape. 3 The pressing mechanism 40 has a pressing rod 43 that is slidable in the direction toward the pressure receiving surface 51, and the upper surface 43a of the front end of the pressing rod 43 is connected to the shape member 9 inserted into the mold.
The shape according to claim 1, wherein the shape is located slightly higher than the upper surface of the mold 9' and can be moved in the direction of movement by the lower surface of one mold that moves toward the other mold. Equipment for injection molding of molten metal onto the top surface of materials. 4 Supports 25', 65, for supporting the section 9
In a molten metal injection molding apparatus having molds 30'', 30 having a casting groove 38'' disposed opposite to the pedestal 70, one of the profiles 9, 9' is placed on the pedestal 25', 65, 70. The stopper surface 50 with which the end surface abuts and the other end edge 9b of the section and the casting groove 3
Pressure receiving surface 51', 5 located at the same position as one end of 8''
1'', 51, and a pressing mechanism 40 for pressing the side edge 9b of the member on the pressure receiving surface is provided on the side of the pedestal 25', 65, 70, and the mold 30'',
An apparatus for injection molding molten metal onto the upper surface of a shaped material, characterized in that a casting space is formed between the upper surface of the shaped material and the upper surface of the shaped material. 5 The pressing mechanism 40 has the pressure receiving surfaces 51', 5
Pressing rod 43 that can freely slide toward 1″, 51
The upper surface 43a of the front end portion has a pedestal 25',
5. The apparatus for injection molding molten metal onto the upper surface of a shape member according to claim 4, which is capable of sliding on a plane that is substantially flush with the upper surface of the shape member 9 inserted into the shape members 65, 70. 6 The pressing mechanism 40 has the pressure receiving surfaces 51', 5
It has a pressing rod 43 that is slidable in the direction toward 1'' and 51, and the upper surface 43a of its front end is located slightly higher than the upper surface of the profile 9 inserted into the pedestals 65 and 70. The molten metal injection molding apparatus for the upper surface of a profile as claimed in claim 4, characterized in that the lower surfaces of the molds 30'', 30 that move toward the pedestals 65, 70 can be moved in the direction of movement thereof. 7. Claim 6, characterized in that the pressure receiving surface 51'' is arranged to be movable in the vertical direction of the pedestal 64, and can be elastically moved by the lower surface of the descending mold 30''. Molten metal injection molding equipment for the top surface of the shape. 8 Stopper surface 50, which one end surface of the profile comes into contact with,
pedestal 70 for supporting a profile with 50'
In a molten metal injection molding apparatus having a mold 30 having a casting groove disposed opposite to the pedestal 70, a pressure receiving plate 69 is provided vertically at a side end of the mold 30.
, a pressure receiving surface 51 that comes into contact with the other side edge 9b of the section 9
is formed to be at the same position as one end of the casting groove, and a pressing mechanism 40 for pressing the side edge 9b of the member against the pressure receiving surface is provided on the side of the pedestal 70, and the mold 30 and the mold An apparatus for injecting molten metal into the upper surface of a shaped material, characterized in that a pressure receiving plate 69 and the upper surface of the shaped material form a casting space. 9 The pressing mechanism 40 has a pressing rod 43 that is slidable toward the pressure receiving surface 51, and the upper surface 43a of the front end thereof is on a plane that is almost flush with the upper surface of the profile 9 inserted into the pedestal 70. 9. The molten metal injection molding apparatus for the upper surface of a shaped material according to claim 8, wherein the molten metal injection molding apparatus is capable of sliding. 10 The pressing mechanism 40 has a pressing rod 43 that is slidable in the direction toward the pressure receiving surface 51, and the upper surface 43a of the front end thereof is slightly higher than the upper surface of the profile inserted into the pedestal 70. Due to the lower surface of the mold 30 being positioned and moving toward the pedestal 70,
9. A molten metal injection molding apparatus for forming an upper surface of a profile according to claim 8, wherein the apparatus is capable of moving in the direction of movement thereof.