JP5410066B2 - Die casting machine - Google Patents

Description

  The present invention relates to a die casting machine provided with means for hanging a lifting tool when lifting the die casting machine with the lifting tool.

  A general die casting machine that has been conventionally used is roughly composed of a mold clamping unit and an injection unit. In the former mold clamping unit, a fixed mold is fixed. Fixed die plate, fixedly arranged during casting operation, and movable plate (holding plate) that can be moved when adjusting die thickness (die height), fixed die plate and tie bar spanned between holding plate, fixed die plate and holding plate A movable die plate fixed to a movable mold that can be moved forward and backward, a toggle link mechanism for moving the movable die plate forward and backward, a mold clamping motor that is a driving source for opening and closing the mold, and the latter injection In the unit, a plunger rod that injects and fills molten metal into the mold, and when the molten metal is injected and filled into the mold. It feeds the high pressure of the pressure oil in the injection cylinder, accumulator or the like for accumulating pressurized oil every shot is constituted.

  As related to the above prior art, Patent Document 1 discloses a die mast machine that can be divided and conveyed in order to facilitate conveyance and unloading.

JP 2005-152915 A

  In Patent Document 1, although a technique for dividing and transporting a large-sized die casting machine is disclosed, it is apparent how the die casting machine is lifted when the die casting machine is transported or the like. Has not been.

  The present invention has been made in view of the above problems, and provides a die casting machine having a suspension structure that can easily lift the die casting machine by providing the die casting machine with a suspension structure when transporting the die casting machine. The purpose is to provide.

A die casting machine according to a first aspect of the present invention is a fixed die plate to which a fixed mold is fixed, a movable die plate to which a movable mold that is opened and closed with the fixed mold is fixed, and is fixedly arranged during a casting operation. , A holding plate that is movable at the time of mold thickness adjustment, a tie bar that spans the fixed die plate and the holding plate, and a toggle link mechanism that moves the movable die plate to which the movable mold is fixed to open and close the mold And a plunger rod for injecting and filling molten metal into the cavity formed from the fixed mold and the movable mold, and feeding high pressure pressure oil when injecting and filling the molten metal into the cavity. , An accumulator for accumulating the pressure oil every shot, and suspended on a block formed to protrude above the holding plate Thereby forming a hole multiplying, the holding plate and the mold closing direction so as to gouge the upper side of the fixed die plate that are spaced to form a U-shaped through hole of the die casting machine When lifting, a U-shaped through-hole formed in the fixed die plate and a hole formed in the block portion of the holding plate are hung and suspended.

A die-casting machine according to a second aspect is the die-casting machine according to the first aspect, wherein the U-shaped through-hole is formed through at least two places on the upper surface of the fixed die plate.

Die casting machine according to claim 3, in the die casting machine according to claim 2, wherein the U-shaped so as not accumulate liquid in the bottom of the through-hole, said fixed die plate from the bottom of the U-shaped through hole A drainage hole is formed by penetrating through the side portion.

The die-casting machine according to claim 4 is the die-casting machine according to claim 2 or 3, wherein the U-shaped through-hole is formed in a concave shape downward from the upper surface of the fixed die plate. And a connecting hole connecting the plurality of concave holes.

  A die casting machine according to a fifth aspect is the die casting machine according to the fourth aspect, wherein the fixed die plate has a plurality of concave hole portions formed downward from the upper surface of the fixed die plate. It was also formed on the left and right sides and the bottom of the plate.

According to the present invention, it is possible to easily lift the die casting machine by suspending the lifting tool between the hole portion of the block portion that protrudes from the upper portion of the holding plate and the U-shaped through hole of the fixed die plate. . Therefore, for example, in the case of a die-casting machine that does not have a hanging structure, when lifting the die-casting machine, the tie bar or the like may be damaged by hanging the lifting tool over the tie bar that guides the movable mold or the like. Thus, there is a possibility of adversely affecting the operation of the die casting machine, but such problems can be solved.

Further, since the drain hole is formed through the side of the fixed die plate from the lower part of the U-shaped through hole comprising the concave hole and the connecting hole, the molded product is separated from the mold when the die casting machine is in operation. The spray liquid can be discharged from the drain hole so as not to accumulate in the lower part of the U-shaped through hole.

  In addition, the concave hole formed downward from the upper surface of the fixed die plate is formed not only on the upper side of the fixed die plate but also on the left and right sides and the bottom thereof. When stress is applied to the fixed die plate to which the mold is attached, the amount of bending in the mold clamping direction of the fixed die plate due to the stress is almost the same in the upper, lower, left, and right directions. It can be made uniform. Moreover, since the concave hole portion and the connecting hole portion are formed in the fixed die plate, it is possible to provide a die casting machine that can reduce the weight and reduce the material cost.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to FIGS. Needless to say, the present invention can be easily applied to configurations other than those described in the embodiments without departing from the spirit of the invention.

  FIG. 1 is a perspective view showing a configuration of a die casting machine, FIG. 2 is a perspective view showing a tail stock configured in the die casting machine, and FIG. 3 is a perspective view showing a fixed die plate configured in the die casting machine as viewed from the front side. 4 is a perspective view showing a state where a fixed die plate configured in the die casting machine is viewed from the back side, and FIG. 5 is a cross-sectional view taken along line AA showing the fixed die plate configured in the die casting machine.

  The die casting machine 1 of the present embodiment is roughly composed of a mold clamping unit 2 and an injection unit 3. The mold clamping unit 2 includes a fixed die plate 4 to which a fixed mold is fixed, and a casting operation. Tail stock 5 as a holding plate that is fixedly arranged and movable when adjusting the die thickness (die height), between fixed die plate 4 and tie bar 6 spanning tail stock 5, between fixed die plate 4 and holding plate 5 A movable die plate 7 fixed to a movable mold provided so as to be able to advance and retreat, a toggle link mechanism 8 for moving the movable die plate 7 back and forth along the longitudinal direction of the tie bar 6, a mold clamping motor 9 serving as a mold opening / closing drive source, and the like. It is configured. The injection unit 3 is also provided with a plunger rod 10 for injecting and filling molten metal into the mold, and when injecting and filling the molten metal into the mold, high pressure oil is fed into the injection cylinder. The accumulator 11 etc. which accumulates oil for every shot are comprised.

  Further, as shown in FIG. 2, the tailstock 5 is formed with a pair of left and right block portions 12 projecting from the upper portion thereof, and these block portions 12 are wires that are suspended when the die casting machine 1 is lifted. A hole 13 through which the rope R is inserted is formed.

  As shown in FIGS. 3 to 5, the fixed die plate 4 has a substantially rectangular parallelepiped shape. The fixed die plate 4 has a front surface portion to which the fixed mold is fixed, a rear surface portion on the back surface, a front surface portion and a back surface portion. There are four side portions, top, bottom, left and right, to be connected, and each of the four side portions has three concave holes 14a, 14b, 14c, and 14d having substantially the same shape. As shown in FIG. 5, the upper concave hole portion 14a formed downward from the upper surface of the fixed die plate 4 is connected to the lower portion thereof in the horizontal direction by the connecting hole portion 15, and the concave hole portion is formed. A wire rope R can be inserted into a through-hole 16 above the fixed die plate constituted by the portion 14a and the connecting hole portion 15. The through-hole 16 of the fixed die plate 4 and the tail stock 5 described above In the hole 13 of the block 12 Over the ends or the like of Ropu R, and is configured to be able to lift the die casting machine 1 by a crane vehicle or the like.

  As shown in FIGS. 4 and 5, the fixed die plate 4 has a drain hole 18 formed through the right portion and the lower portion of the through hole 16. In the case where the machine 1 is equipped with a spray device, there is a concern that when the die casting machine 1 is in operation, the spray liquid sprayed from the spray device to the mold scatters and the liquid accumulates in the lower portion of the through hole 16. However, even if the spray liquid scatters during operation of the die casting machine 1 and the spray liquid scatters on the upper portion of the fixed die plate 4 or the like, the spray liquid may accumulate in the lower portion of the through hole 16 through the drain hole 18. Can be drained so that there is no water.

  As described above, according to the die casting machine 1 of the present embodiment, the fixed die plate 4 to which the fixed mold is fixed, the movable die plate 7 to which the fixed mold and the movable mold to be opened and closed are fixed, and during the casting operation. Is fixedly arranged and can be moved when adjusting the die thickness (die height), a tail stock 5 as a holding plate, a fixed die plate 4 and a tie bar 6 spanning the tail stock 5, and a movable die to which the movable mold is fixed. A toggle link mechanism 8 for moving the plate 7 forward and backward for opening and closing the mold, a plunger rod 10 for injecting and filling molten metal into a cavity formed by the fixed mold and the movable mold, and injecting molten metal into the cavity When filling, a high pressure pressure oil is fed in, an accumulator 11 or the like for accumulating the pressure oil every shot, When the die casting machine 1 is lifted by R and loaded or unloaded outdoors or the like, the hole 13 of the block 12 formed protruding from the top of the tailstock 5 is separated from the tailstock 5 in the mold opening / closing direction. A wire rope R can be hung on a U-shaped through-hole 16 formed so as to penetrate at least two upper portions of the fixed die plate 4 arranged. As a result, as shown by the alternate long and short dash line in FIG. 1, the wire rope R is bridged between the hole 13 of the block 12 formed to protrude from the top of the tailstock 5 and the through hole 16 of the fixed die plate 4. Thus, since the die casting machine 1 can be easily lifted, when lifting a conventional die casting machine that does not have a hanging structure, for example, a wire rope is hung on a tie bar that guides a movable mold or the like to lift the die casting machine. Thus, the tie bar may be damaged, which may adversely affect the operation of the die casting machine. However, the cause of the failure can be avoided.

  Further, from the lower part of the through hole 16 to the side part of the fixed die plate 4 so that liquid does not accumulate in the lower part of the through hole 16 composed of the concave hole part 14a on the upper surface side of the fixed die plate 4 and the connecting hole part 15. Since the drain hole 18 is formed by penetrating, liquid such as spray liquid or water can be discharged from the drain hole 18 to the outside of the die casting machine 1.

  Further, the concave holes 14a formed downward from the upper surface of the fixed die plate 4 are formed not only on the upper portion of the fixed die plate 4, but also on the left and right side portions and the bottom portion of the same shape. Therefore, when the mold is clamped, when a stress is applied in the mold clamping direction to the fixed die plate 4 to which the fixed mold is attached, the amount of bending of the fixed die plate 4 due to the stress is almost vertical and horizontal. Since they can be made the same, the rigidity balance of the fixed die plate 4 in the vertical and horizontal directions can be made uniform.

  Furthermore, since the concave hole portions 14a, 14b, 14c, 14d and the connection hole portion 15 are formed in the fixed die plate 4, the weight of the fixed die plate 4 can be reduced and the material cost can be reduced at the same time. be able to.

  Although an example of this embodiment has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the gist of the present invention. Although the wire rope R is adopted as the hanging tool in the present embodiment, it is not particularly limited thereto, and a chain or a sling rope may be selected as appropriate. Needless to say, it is possible to easily carry out the work of suspending the suspension by connecting a shackle to the end of the suspension or the like.

It is a perspective view which shows the structure of a die-casting machine. It is a perspective view which shows the tail stock comprised in a die-casting machine same as the above. It is a perspective view which shows the state which looked at the stationary die plate comprised from the same as the above from the front side. It is a perspective view which shows the state which looked at the stationary die plate comprised from the same as the above from the back side. It is an AA line sectional view showing a fixed die plate constituted in a die casting machine same as the above.

Explanation of symbols

1 Die casting machine 4 Fixed die plate 5 Tail stock (holding plate)
6 Tie bar 7 Movable die plate 8 Toggle link mechanism 10 Plunger rod 11 Accumulator 12 Block part 13 Hole part 14a, 14b, 14c, 14d Concave hole part 15 Connection hole part 16 Through hole 18 Water drain hole R Wire rope (hanging tool)

Claims (5)

A fixed die plate to which a fixed mold is fixed;
A movable die plate to which a movable mold to be opened and closed with the fixed mold is fixed;
A holding plate that is fixed during casting operation and movable during mold thickness adjustment;
A tie bar spanning the fixed die plate and the holding plate;
A toggle link mechanism for moving the movable die plate fixed to the movable mold forward and backward for opening and closing the mold;
A plunger rod for injecting and filling molten metal into a cavity formed from the fixed mold and the movable mold;
A die casting machine comprising: an accumulator that feeds high-pressure oil when the molten metal is injected and filled into the cavity, and accumulates the pressure oil every shot;
A hole for hanging a hanging tool is formed on the block formed protruding from the upper part of the holding plate, and the upper part of the fixed die plate that is spaced apart from the holding plate in the mold opening / closing direction is cut out. Forming a U-shaped through hole,
When the die casting machine is lifted, the U-shaped through hole formed in the fixed die plate and the hole formed in the block portion of the holding plate are hung and suspended. Die casting machine. 2. The die casting machine according to claim 1, wherein the U-shaped through hole is formed by penetrating at least two places on the upper surface of the fixed die plate. The U-shaped so as not accumulate liquid in the bottom of the through hole, wherein, characterized in that through the bottom of the U-shaped through-holes on the side of the fixed die plate to form a drain hole Item 3. The die casting machine according to Item 2. The U-shaped through hole includes a plurality of concave hole portions formed in a concave shape downward from the upper surface of the fixed die plate, and a connecting hole portion connecting the plurality of concave hole portions. The die-casting machine according to claim 2 or 3.   The concave hole portions corresponding in number and shape to the plurality of concave hole portions formed downward from the upper surface of the fixed die plate are also formed in the left and right side portions and the bottom portion of the fixed die plate. Item 5. The die casting machine according to Item 4.

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