JPH0312993B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a mold casting machine used for molding aluminum foil and the like.

(Prior Art) Conventionally, there is a mold casting machine as shown in FIG. 6, for example.

In FIG. 6, four pillars 102 are arranged and erected in a rectangular shape above a base 101, and a crucible 103 into which molten metal such as aluminum can be placed is installed between each pillar 102. Above the crucible 103, a lower die base 104 is horizontally installed at the upper end of each support 102, and a lower mold 106 is installed at the center of the upper surface of the lower die base 104 via a lower mold flange 105. There is. This lower mold 106 is provided with cores 108a and 108b that can extend and retract horizontally on opposite sides, and the rod ends of core cylinders 109a and 109b are fixed to each core 108a and 108b. Cylinder 109a, 109b
are fixed onto the lower die base 104 via brackets 110a and 110b. That is, by operating each core cylinder 109a, 109b, the cores 108a, 108b can move in and out of the lower die 106, and each core 108
When a and 108b are aligned, a cavity is formed in the lower mold 106 for molding, for example, aluminum foil for an automobile. Note that a stalk 10 that communicates with the crucible 103 is provided on the lower surface of the lower die 106.
7 is connected, and the cavity in the lower die 106 and the crucible 103 are placed in communication via this stalk 107.

An upper mold 111 is placed on the upper surface of this lower mold 106 from above.
The upper mold 111 and the lower mold 106 constitute a mold K. An upper die base 113 is connected to the upper surface of the upper mold 111 via an upper mold flange 112.
The rod end of a cylinder rod 114 is fixed to the upper surface of the upper die base 113. This cylinder rod 114 can be moved in the vertical direction by an upper mold cylinder 115, and the upper mold cylinder 115 is connected to an upper platen fixed to the upper end of a tie bar 116 that stands up from the periphery of the lower die base 104. It is erected at the center of the upper surface of 117.
A pair of guide housings 119 are provided on the outer periphery of the upper cylinder 115 and extend vertically through the upper platen 117. Inside the guide housings 119 is an upper end portion of a guide rod 118 that is slidable in the vertical direction. is inserted. The lower end of this guide rod 118 is connected to the upper die base 11.
It is fixed at 3. Therefore, when the upper mold cylinder 115 operates, the upper mold 111 is moved upward via the cylinder rod 114, and this movement is smoothly performed by the pair of guide rods 118.

In a conventional mold casting machine having such a structure, a pair of cores 108a,
108b is aligned by operating the core cylinders 109a and 109b, and then the upper mold 111 is aligned from above through the upper mold cylinder 115, and the inside of the cavity of the mold K formed between the upper mold 111 and the lower mold 106 is aligned. Then, molten aluminum is supplied into the cavity from the lower crucible 103 through the stalk 107, and an aluminum foil is formed in the mold. After modeling, first the core cylinder 10
9a, 109b operate, cores 108a, 108
b is pulled out from the lower die. Thereafter, the upper mold 111 is moved upward by the operation of the upper mold cylinder 115, and the product is lifted upward together with the upper mold 111, and is placed into a transfer device (not shown) and transported outside.

(Problems to be Solved by the Invention) In the conventional mold casting machine configured as described above, the number of molds K installed on the lower die base 104 is one, so the workability in forming products is reduced. In addition, if either the upper mold 111 or the lower mold 106 were damaged, it was necessary to take the mold out of the machine for repair, and it was necessary to stop the entire mold casting machine.

In addition, in conventional molds that have cores that can be inserted and removed on opposite sides of the mold, if two or more molds are placed on the lower die base 104, the cores may interfere when each core is inserted or removed. There was a problem with this.

(Means for Solving the Problems) The present invention has been devised in view of the above-mentioned conventional problems, and provides a mold casting machine that can improve work efficiency and does not interfere with each core. The purpose is to provide two or more lower dies installed on a lower die base, and an upper die extending from an alignment position aligned with each of the lower dies to a retracted position above the lower dies. In a mold casting machine equipped with the same number of upper molds that are moved up and down through mold cylinders, an inner core and an outer core are provided on opposing sides of each of the lower molds so as to be retractable. A core cylinder for moving the outer core is installed on the lower die base outside the core, and a pair of side core cylinders for moving the inner core are fixed on both sides of the core cylinder on the lower die base. The rod ends of the side core cylinders are connected to the inner core through guide rods movably disposed on both side surfaces of the lower mold, and there is no space between the lower molds. A gap is formed that does not interfere with the movement of the inner core when it moves in and out.

(Function) In two or more lower molds installed on the lower die base, each lower mold is provided with an inner core and an outer core on opposing sides, and the outer core can be moved in and out by a core cylinder. In addition, the inner core can be moved in and out by a pair of side core cylinders connected via a guide rod,
Moreover, since the core cylinder and side core cylinder are arranged side by side on the outside of the lower mold, when two or more lower molds are installed on the lower die base, the core cylinder and the side core cylinder do not get in the way and can be placed on the lower die base. Two or more molds can be arranged compactly, and it is only necessary to form a gap between each lower mold to the extent that there is no interference when the inner core moves in and out, and two or more molds can be placed on the lower die base. Installation is easy, and the entire casting machine does not become large.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a side view of a mold casting machine showing a first embodiment of the present invention, FIG. 2 is an enlarged side view showing main parts of the mold K shown in FIG. 1, and FIG. 4 is a perspective view showing the opening/closing mechanism of the core of the mold K. FIG.

In the figure, a base 1, support column 2, crucible 3, lower die base 4, tie bar 5, and upper platen 6, which constitute the machine frame of the mold casting machine, have the same structure as the conventional structure shown in FIG. 6.

In this example, two molds K and K are arranged side by side on the lower die base 4, and the molds K and K are arranged side by side on the lower die base 4.
Each of the lower molds 7a and 7b constituting the
The lower molds 7a and 7b are installed on the lower die base 4 with a gap in which the cores can move in and out.

Upper molds 8a and 8b are provided on each lower mold 7a and 7b, respectively, and can be aligned from above. Upper mold flanges 9a and 9b are fixed to the upper surface of each upper mold 8a and 8b, and Upper die base 10
a, 10b are fixed, and each upper die base 10a,
10b has a cylinder rod 11 in the center of its upper surface.
The ends of cylinder rods a and 11b are fixed, and each cylinder rod 11a and 11b is actuated by each upper mold cylinder 12a and 12b. That is, a pair of upper mold cylinders 12 are mounted on the upper platen 6.
A, 12b are provided upright, and a pair of guide housings 13a, 13b are provided on the periphery of each of the upper mold cylinders 12a, 12b, and within these guide housings 13a, 13b are slidable guide rods 14a, 14b. 14b are arranged vertically. Therefore, each of the upper molds 8a and 8b is configured to be able to move up and down independently by each of the upper mold cylinders 12a and 12b.

In addition, since the molten metal is supplied from below to the two lower molds 7a and 7b, the lower molds 7a and 7 are placed inside the crucible 3.
Stokes 15a and 15b communicating with b are vertically arranged, respectively.

Next, the opening/closing mechanism of the core of each of the lower molds 7a, 7b will be explained in detail with reference to FIGS. 2, 3, and 4.

That is, each lower mold 7a, 7b is a mold for manufacturing aluminum foil for automobiles in this example,
In order to form a concave periphery of the aluminum foil and to make it possible to cut out the product after printing, each lower die 7
Recesses Oa and Ob are respectively provided on opposing sides of recesses Oa and Ob, and a pair of outer cores 16a and inner cores 16b can be inserted into and removed from the outside of each recess Oa and Ob. Therefore, when molding a product, each core 16a, 16b is inserted into each lower mold 7a, 7.
b, and after the product is formed, the lower molds 7a, 7
b, and the product is punched upward together with the upper molds 9a and 9b.

The opening/closing mechanism of each core 16a, 16b is
To explain the lower mold 7a on the right side in FIGS. Connecting plate 1
A rod end of a core cylinder 19 is fixed to the center of the outer surface of the core connecting plate 17 via a flange 18. This core cylinder 19 is fixed to a core cylinder fixing plate 20 fixed to the lower die base 4. On both sides of this core cylinder 19, a pair of housings 21a and 21b are arranged on the core cylinder fixing plate 2.
0, and each housing 21a,
Inside the core cylinder 19, a pair of guide rods 22a are installed horizontally in parallel with the rods of the core cylinder 19.
22b are slidably inserted into each guide rod, and the distal end portions of each guide rod 22a, 22b are fixed to the core connecting plate 17. Therefore, when the core cylinder 19 operates, the core connecting plate 17
The outer core 16a can move in and out of the recess Oa of the lower die 7a via the outer core 16a. During the movement, the pair of guide rods 22a and 22b act as a guide, so that the movement is smooth.

Next, to explain the opening/closing mechanism of the inner core 16b that can appear and retract into the recess Ob on the left side surface of the lower mold 7a, a core connecting plate 23 is fixed to the outside of the inner core 16b. is formed to have a width that protrudes outward from the upper and lower sides of the lower die 7a as shown in the figure, and the left end portions of two guide rods 25a and 25b, which are horizontally installed in parallel, are fixed to both ends of each rod. . Each guide rod 25a, 2
5b are four housings 24 fixed to the upper and lower sides of the lower mold 7a at appropriate intervals, respectively;
The guide rods 25a, 25 are fitted into the guide housings 24, 24 along the guide rods 25a, 25.
b can be slid horizontally. A pair of guide rods 25a and 25b are provided in the vertical direction, and therefore, two guide rods are provided on the upper and lower sides of the lower die 7a in the drawing. A frame-shaped guide rod connecting plate 26 is fixed to the right end of each guide rod 25a, 25b, and this guide rod connecting plate 26 is arranged parallel to the right side of the lower mold 7a on the outside of the right side of the lower mold 7a. It is located in Guide rod connecting plate 2
An opening is provided in the center of the cylinder 6, and the rod of the core cylinder 19 and the pair of guide rods 22a and 22b are disposed in a penetrating state within this opening. Side core cylinders 27a and 2 are provided at both outer ends of the guide rod connecting plate 26, respectively.
The leftward rod end of 7b is fixed, and each side core cylinder 27a, 27b is fixed to side core cylinder fixing plates 28a, 28b fixed to the lower die base 4, respectively.

In this example, each side core cylinder 27a, 27b is of a double rod type, and a connecting plate 30 is connected and fixed to the right rod end of each side core cylinder 27a, 27b. . Therefore, this connecting plate 30 ensures synchronized operation of each side core cylinder 27a, 27b. In this example, a core cylinder 19 for moving the outer core 16a and a pair of side core cylinders 27a and 27b for operating the inner core 16b are constructed so that they can be operated synchronously. The outer core 16a and the inner core 16b are removed from and inserted into the lower die 7a at the same time.

In the lower mold 7b on the left side of FIGS. 2 and 3,
The state in which each core 16a and 16b has been removed from the lower die 7b is shown. Core 16 of each lower mold 7a and 7b
Even if both cores a and 16b are removed, each core 16
Each lower mold 7a,
A gap is provided between 7b.

In the core opening/closing mechanism configured in this way,
For each lower mold 7a, 7b, each core 16a,
With the molds 16b fitted into the recesses Oa and Ob, the upper molds 8a and 8b are inserted into the upper mold cylinders 12a and 16b from above.
It is lowered at 12b and aligned with each lower mold 7a, 7b. In the aligned state, each stalk 15a,
Molten aluminum is supplied from the inside of the crucible 3 through the crucible 3 into the cavity formed by the upper molds 8a, 8b and the lower molds 7a, 7b, and an aluminum foil is formed. After molding, each core 16 is removed from each lower mold 7a, 7b.
a, 16b are removed, and then the upper molds 8a, 8b are removed.
rises, and the formed aluminum foil is transferred to the upper die 8a,
It is cut out together with 8b and transported by an external conveyance device. Incidentally, since the upper molds 8a and 8b in this example are operated by individual upper mold cylinders 12a and 12b, each upper mold cylinder 12a and 12b can be operated synchronously, or can be operated separately and independently. You can also do that.

In the mold casting machine of this example, two molds K are arranged, and the cores 16b, 16b provided opposite to the respective lower molds 7a, 7b are not buffered even if they are respectively removed. Since the cores 1 are arranged as shown in FIG.
6b, 16b can be moved smoothly, and even if one mold K is damaged, the other mold K can be operated independently, and the aluminum foil molding operation can be continued. be.

Next, a second embodiment will be explained with reference to FIG.

In this example, the structure of the machine frame is almost the same as that of the first example, and the differences from the first example are as follows.
A pair of upper molds 8a and 8b are combined into one upper die base 40
The lower end of a cylinder rod 41 is fixed to the center of the upper die base 40. mold cylinder 4
2, and the upper cylinder 4
A pair of guide housings 43a and 43b are provided on the periphery of the upper platen 6, and a pair of guide rods 44a and 44b are slidably installed vertically in the guide housings 43a and 43b. The lower ends of the guide rods 44a, 44b are fixed to the upper die base 40. Each lower mold 7a,
The opening/closing mechanism of the core 7b is similar to that of the first embodiment.

In the mold casting machine of the second embodiment configured as described above, since there is only one upper mold cylinder 42, the pair of upper molds 8a and 8b are always moved up and down integrally, and the two molds are K and K simultaneously form aluminum foil.

In this example, only one upper cylinder is required,
The structure is simple and the manufacturing cost is low. In addition, even if one mold K is damaged, the molding operation can be continued using the other mold, which is the first point.
This is similar to the example.

(Effects of the Invention) The present invention provides two or more lower dies installed on a lower die base, and an upper die cylinder that extends from an alignment position aligned with each of the lower dies to a retracted position above the lower dies. In a mold casting machine equipped with an equal number of upper molds that are moved up and down through A core cylinder for moving the outer core is installed on the outer lower die base, and a pair of side core cylinders for moving the inner core are fixedly arranged on both sides of the core cylinder. The rod ends of each side core cylinder are connected to the inner core via guide rods movably disposed on both side surfaces of the lower mold, and between each of the lower molds, By forming a gap that does not interfere when the inner core moves in and out, the core cylinder and side core cylinder are arranged side by side on the outside of the lower mold, so two or more lower molds can be installed on the lower die base. In this process, two or more molds can be placed compactly on the lower die base without the core cylinder and side core cylinder getting in the way, and the distance between each lower mold is such that it does not interfere with the movement of the inner core when it moves in and out. It is sufficient to form a gap, and two or more molds can be easily installed on the lower die base, and the entire casting machine does not become large. Moreover, the cores of each mold do not interfere with each other during operation, and even if one mold is damaged, work can be continued with the other mold, which has the effect of improving work efficiency.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention,
Figure 1 is a side view showing the overall arrangement of the mold casting machine, Figure 2 is an enlarged side view showing the core opening/closing mechanism of the mold in Figure 1, Figure 3 is a plan view of the lower mold in Figure 2, FIG. 4 shows a perspective view of essential parts of the core opening/closing mechanism. FIG. 5 shows a second embodiment of the present invention, and is a side view showing the overall arrangement corresponding to FIG. 1. FIG. 6 shows a conventional mold casting machine and is a side view corresponding to FIG. 1. 3... Crucible, 4... Lower die base, 6... Upper platen, K... Mold, 7a, 7b... Lower mold, 8a, 8b
...Upper die, 10a, 10b...Upper die base, 12
a, 12b...upper cylinder, 14a, 14b...
Guide rod, 15a, 15b...Stoke, 16
a, 16b... Core, 17... Core connecting plate, 19... Core cylinder, 22a, 22b... Guide rod,
23...Core connection plate, 24...Guide housing, 2
5a, 25b...Guide rod, 26...Guide rod connecting plate, 27a, 27b...Side core cylinder, 30...Connecting plate, 40...Upper die base, 42...
upper cylinder.

Claims (1)

[Claims] 1. Two or more lower molds installed on a lower die base, and the same number of lower molds that are moved up and down via an upper mold cylinder from an alignment position where they are aligned with each lower mold to a retracted position where they are retracted above the lower molds. In the mold casting machine, an inner core and an outer core are provided on opposing sides of each of the lower molds so as to be retractable, and a core is provided on the lower die base outside the outer core. A core cylinder for moving the outer core is installed, a pair of side core cylinders for moving the inner core are fixedly arranged in parallel on the lower die base on both sides of the core cylinder, and each side core cylinder The rod ends are connected to the inner core via guide rods movably disposed on both side surfaces of the lower die, and
A mold casting machine characterized in that a gap is formed between each of the lower molds to prevent interference when the inner core moves in and out.