JP3763779B2 - Hood with dedicated mist passage for die casting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mist hood for a die casting machine, and more particularly to a hood provided with a mist exclusive passage that allows a mist collector to be disposed adjacent to the hood.
[0002]
[Prior art]
When the die casting machine is operated, the molded product is removed from the mold each time, and then the cavity surface of the mold is cleaned with air or the like, and a mold release agent is sprayed onto the molded product for smooth removal of the next molded product.
[0003]
Further, when the injection plunger is at the rear standby position of the injection sleeve for the next injection operation, the lubricant is sprayed around the injection plunger. Immediately after the spraying is performed, the release agent and the lubricant are in a mist form in the vicinity of the vicinity of the injection plunger and in the vicinity of the pair of separated molds, that is, on the upper side of the mold clamping device.
Also, sometimes a mist flame ignited from a high temperature injection plunger or the like spreads in the vicinity.
[0004]
Since such mist generation is repeated every shot, the environment and safety in the vicinity of the die casting machine are greatly deteriorated.
For this reason, in the past, a large-capacity electric dust collector was sometimes installed in the factory where the die-casting machine was installed to collect mist, etc., but once the mist diffused in the atmosphere was collected. However, there is a limit in improving the working environment itself, and there is also a problem in the capacity of the dust collector, so that mist and the like are now recovered without being scattered in the atmosphere.
[0005]
In the mist collecting system currently in use, a mist hood that covers the upper part of the die casting machine's mold clamping device and the injection device with the injection plunger is arranged, and the hood is placed near the die casting machine main body via a duct. It leads to the mist collector arranged in the. In this case, the mist hood is formed of a single-layer side wall and an upper surface wall so as to prevent the mist rising from below from spreading to the outside and guiding it toward the duct. .
However, in this method, a space for installing the mist collector is required near the die casting machine, and a space on the duct arrangement is also required, which causes the periphery of the die casting machine body to be complicated. There is a problem of interference with the working range of the robot and the mold loading / unloading device from the lateral direction.
[0006]
On the other hand, if the mist collector can be installed adjacent to the hood and above the die casting machine main body, the duct is unnecessary and the space problem can be solved. Therefore, in a state where a high temperature mist is ignited in the hood, the flame may enter the mist collector, and the mist collector itself may cause a fire and lead to a major accident.
[0007]
Under these circumstances, the duct must be arranged so as to be longer than a certain length so that the flame does not reach the mist collector. Therefore, the mist collector is arranged above the die casting machine body. It was not possible to set up.
[0008]
[Problems to be solved by the invention]
As a result of earnestly examining the above-mentioned problems, the present inventors, as a result, have a flame blocking function in the hood so that the flame does not reach the inlet of the mist collector even if the flame occurs in the worst. It has been found that the above problem can be solved by forming the passage.
Accordingly, an object of the present invention is to dispose a mist collector adjacent to the mist hood above the die casting machine main body, and does not require a duct, and the generation of flame in the hood is cut off to reach the mist collector. The object is to provide a mist hood for die-casting machines that is not required.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a hood for a mist of a die casting machine according to the present invention comprises:
A mist hood mounted on a mounting base disposed at the upper part of a die casting machine main body and covering an upper side of an injection apparatus including an injection plunger of the die casting machine and an upper side of a mold clamping apparatus including a pair of opposed molds. The hood has a double structure having an inner wall disposed opposite to each outer wall at a predetermined interval separately from the outer wall on the operation side and the non-operation side of the die casting machine and the outer wall on the mold clamping device side. In addition, the mist passage is formed between the inner wall and the outer wall as a structural feature.
[0010]
In that case, preferably, a mist suction port is formed at the upper end of the inner wall facing the outer wall on the operation side and the counter-operation side, and further on the outer wall on the mold clamping device side. Can also form a mist supply port to a mist collector disposed adjacently.
Furthermore, the mist hood is mainly mounted with a fixed hood portion that sucks mist from the vicinity of the injection plunger, and is detachably mounted on the fixed hood portion and movable on the mounting base. It can comprise so that it may consist of the movement hood part which attracts | sucks the mist from the side.
In that case, it is also possible to provide the moving hood part with an attachment part for mounting a mist collector.
[0011]
Mist generated in the vicinity of the injection plunger and the mold rises inside the hood and is sucked from a suction port provided on the inner wall of the hood. The inside of the suction port is a layered mist passage formed by an outer wall and an inner wall, and the mist is guided to the supply port to the mist collector via at least one corner. Yes.
Since such a mist-dedicated laminar passage is lower in temperature than the inside of the hood and is difficult to replenish air, even if a flame reaches the suction port, it spreads into the laminar passage and reaches the supply port Absent. That is, it has a flame blocking function due to its structure.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example based on an embodiment of the invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of a hood for mist according to the present invention disposed above a die casting machine main body of a horizontal injection and horizontal mold clamping system, as viewed from the operation side of the die casting machine. In FIG. 1, reference numeral 10 is a base of the die casting machine, and a mold clamping device is mounted on the base 10, and an injection device 12 is disposed on the right side thereof. The mold clamping device includes a fixed die plate 16, a moving die plate 22, a link housing 28, a toggle mechanism 26 for moving the moving die plate 22 back and forth, a cylinder 24 for moving back and forth, a tie bar 25, and the like. Reference numerals 18 and 20 are a fixed mold and a movable mold, respectively.
[0013]
A U-shaped C frame 17 is fixedly coupled to the fixed die plate 16, and an injection plunger 14 extending from the injection device 12 via a coupling is disposed between the C frame 17 and the fixed die plate 16 and is injected. The end portion of the sleeve 15 is slidably inserted into the sleeve 15.
Reference numeral 32 is a spray device having a spray head 34 attached to the tip thereof, and is mounted on the upper surface of the C frame 17 via a support, so that it can move up and down and rotate around the support.
[0014]
Reference numeral 30 denotes a mounting base for the mist hood, which is supported in the horizontal direction by pillars indicated by alternate long and short dash lines at left and right ends thereof. Reference numerals 36 and 38 denote a fixed hood portion and a movable hood portion, respectively, and the inside thereof is shown in FIG.
The fixed hood portion 36 is disposed substantially above the injection plunger 14 so that the mist formed in the vicinity of the injection plunger 14 rises inside the fixed hood portion 36 and is sucked into the upper suction port 42 as indicated by an arrow. It has become. Similarly, the mist formed in the vicinity of the pair of spaced apart molds rises inside the moving hood portion 38 and is sucked into the upper suction port 42 as indicated by an arrow.
[0015]
The fixed hood portion 36 is fixed on the mount 30 or the fixed die plate 16 or the C frame 17. On the other hand, the movable hood portion 38 is configured to be movable in the horizontal direction on the mounting base 30 by a roller 39 attached to the lower side surface thereof.
Reference numeral 40 is an attachment portion formed integrally with the movable hood portion 38, on which a mist collector 46 is mounted and fixed. Reference numeral 44 is a connecting portion between the moving hood portion 38 and the mist collector 46. Reference numeral 48 denotes an air exhaust port after the mist processing inside the mist collector 46. Reference symbol L indicates a boundary line between the fixed hood portion 36 and the movable hood portion 38.
[0016]
FIG. 2 is a plan view taken along line AA in FIG. As shown in FIG. 2, an inner wall 36B is disposed opposite to the outer wall 36A on the operation side and the counter-operation side of the fixed hood portion 36 with a predetermined distance.
Similarly, the inner side wall 38B is disposed on the movable hood portion 38 so as to face the outer wall 38A on the operation side and the counter-operation side with a predetermined interval. Furthermore, an inner wall 38D is arranged opposite to the outer wall 38C of the movable hood portion 38 on the side of the clamping device with a predetermined distance.
A mist supply port to an adjacent mist collector 46 is formed in the substantially central portion of the outer side wall 38C.
[0017]
As shown in FIG. 2, a relatively thin layered space is formed by the outer walls 36A and 38A and the inner walls 36B and 38B. As shown in FIG. 1, three suction ports 42 for mist M are formed at the upper ends of the inner side walls 36B and 38B. Mist M passes through the passage formed in the upper part between the side walls 36A, 36B and 38A, 38B as shown in the figure, and reaches the corner portion Z. From there, the mist M passes through the passage formed by the side walls 38C, 38D. In this way, the mist collector 46 is sucked. The inner walls 36B, 38B, and 38D do not necessarily have to be formed over almost the entire outer walls 36A, 38A, and 38C that are opposed to each other, and the inner walls are formed only in portions corresponding to the passages of the mist M. Also good.
[0018]
However, in actual production, as long as the suction force of the mist collector 46 is not significantly impaired, a partition plate or a baffle plate is appropriately arranged and fixed on each inner side wall, and various mist passages are provided between the outer side walls. It is also possible to form.
For example, a vertical partition plate indicated by a broken line is arranged at the corner Z in FIG. 2, and the mist M coming from the right is guided to the position of the supply port of the lower mist collector 46 at the upper part between the side walls 38A and 38B. It can also be. Furthermore, although not shown, an upper side inner wall facing the upper surface of the mist hood is provided and a suction port is formed on the surface, and the mist from the suction port is once guided to the upper passage formed by the side walls 38A and 38B. A passage may be formed.
[0019]
Thus, the passage of mist M is formed by a relatively low temperature thin layer formed between the outer wall and the inner wall, and at least one corner of the mist passage in such a layered passage is a suction port. By providing it between the supply port to the mist collector 46, it is possible to provide a flame blocking function. In that case, if the vicinity of the laminar passage is cooled with cooling water or the like, the temperature of the mist is lowered, so that the blocking function can be further improved.
Furthermore, in the example shown in FIG. 1 and FIG. 2 described above, the mist hood is not an integral type, but is provided with a fixed hood portion 36 and a movable hood portion 38 that can be brought into and out of contact with each other. For example, when the replacement is performed from above or for the maintenance of the spray device 32. However, it is also possible to lift the integrated hood with a crane and move it to another place to clear these points.
[0020]
【The invention's effect】
The mist hood according to the present invention has an inner wall that is disposed opposite to the outer wall at a predetermined interval apart from the outer wall on the operation side and the non-operation side of the die casting machine and the outer wall on the mold clamping device side. It has a heavy structure, and a relatively narrow layered space between the inner and outer walls is used as a mist passage, so it has a flame blocking function, and the mist collector is positioned above the die casting machine body. It can be placed adjacent to the mist hood to be used, eliminates the need for a conventional duct, and eliminates the need to install a mist collector around the die casting machine body, thus eliminating space problems. Play.
[Brief description of the drawings]
FIG. 1 is a front view of a hood for mist according to the present invention disposed above a die casting machine main body of a horizontal injection and horizontal mold clamping system as viewed from the operation side of the die casting machine.
FIG. 2 is a plan view of a mist passage viewed along line AA in FIG.
[Explanation of symbols]
10 base 12 injection device 14 injection plunger 15 injection sleeve 16 fixed die plate 17 C frame 18 fixed die 20 moving die 22 moving die plate 24 cylinder 25 tie bar 26 toggle mechanism 28 link housing 30 mounting base 32 spray device 34 spray head 36 Fixed hood portion 36A, 38A, 38C Outer side wall 36B, 38B, 38D Inner side wall 39 Roller 40 Mounting portion 42 Suction port 44 Connection portion 46 Mist collector 48 Discharge port
L border
M mist
Z corner

Claims (6)

A mist hood mounted on a mounting base disposed at the upper part of the die casting machine main body and covering the upper side of the injection device including the injection plunger of the die casting machine and the upper side of the mold clamping device including a pair of opposed molds. In addition, the hood has a double wall having an inner wall disposed opposite to the outer wall on the operation side and the non-operation side of the die casting machine and an outer wall on the mold clamping device side with a predetermined distance therebetween. A hood provided with a mist exclusive passage for a die casting machine, characterized in that a mist passage is formed between an inner wall and an outer wall of the structure. In Claim 1, the upper end part of the inner wall facing the outer wall on the operation side and the counter-operation side is formed with a mist suction port, and further on the outer wall to the mist collector disposed adjacent thereto. A hood with a dedicated mist passage for a die casting machine, characterized by forming a mist supply port. 3. The mist suction port is formed at an upper end portion of the inner wall facing the outer wall on the operation side and the counter operation side according to claim 1, and further, adjacent to the outer wall on the mold clamping device side. A hood provided with a mist exclusive passage for a die casting machine, wherein a mist supply port to a mist collector to be disposed is formed. 4. The die casting according to claim 1, 2, or 3, further comprising an upper inner wall facing the upper outer wall of the mist hood with a predetermined interval, and a mist suction port formed in the upper inner wall. A hood with a dedicated mist passage for machines. 5. The mist hood according to claim 1, wherein the mist hood mainly sucks mist from the vicinity of the injection plunger, and is movable toward and away from the fixed hood portion and on the mounting base. A hood provided with a dedicated mist passage for a die casting machine, which is configured to include a movable hood portion that is mounted and sucks mainly mist from the mold clamping device side. 6. The hood provided with a mist exclusive passage for a die casting machine according to claim 5, wherein an attachment portion for mounting a mist collector is provided on the movable hood portion.

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