JP2003170261A - Hood equipped with dedicated mist passage for die cast machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dedicated mist hood with a mist collector arranged adjacent to the former above a die cast machine body in order to shut off a fire inside the hood, and prevent it from spreading to the mist collector. <P>SOLUTION: This mist hood is installed on a mount arranged on the top of the die cast machine body, and coves a part above the injection device side including an injection plunger of the die cast machine and also a part above the mold clamping device side including a pair of opposed mold halves. In addition, the hood is of a double structure comprising outside walls on the operating side of the die cast machine and on the opposite operating side and inside walls arranged opposite to the described outside walls with a specified space formed in between, in addition to the outside walls of the mold clamping device side. Further, a mist passage is formed between the inside walls and the outside walls. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field 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 dedicated passage that allows a mist collector to be disposed adjacent to the hood.

[0002]

2. Description of the Related Art Every time a die casting machine is operated, a molded product is taken out of the mold, the cavity surface of the mold is cleaned with air, etc., and then the mold is released for smooth removal of the next molded product. Spray the agent.

Further, the injection plunger sprays the lubricant around the injection plunger when the injection plunger is at the rear standby position of the injection sleeve for the next injection operation. Immediately after these sprays are made, the release agent and the lubricant are in the form of mist in the vicinity of the injection plunger and in the vicinity of the pair of separated molds, that is, on the mold clamping device side. Further, sometimes the flame of mist ignited from a high temperature injection plunger or the like spreads in the vicinity.

Since the generation of such mist is repeated for each shot, the environment and safety in the vicinity of the die casting machine are extremely deteriorated. For this reason, a large-capacity electrostatic precipitator was previously installed in the factory where the die casting machine is installed to collect mist etc., but the mist etc. once diffused into the atmosphere is collected. However, there is a limit in improving the working environment itself, and there is a problem in the capacity of the dust collector, so that the mist or the like is now collected without being scattered into the atmosphere.

[0005] In the currently used mist recovery system,
A mist hood that covers the upper part of the die-casting machine, including the mold clamping device and the injection plunger side, is installed, and the hood is guided from the hood to a mist collector located near the die-casting machine body through a duct. There is. In this case, the mist hood is designed to prevent the mist rising from below from spreading to the outside and guide it toward the duct, and is formed by the side wall and the top wall of the single structure. . However, in this method, a space for installing the mist collector is required near the die casting machine, and a space for arranging the duct is also required, which causes the periphery of the die casting machine body to be complicated. There is a problem of interference with the work range of the robot and the device for loading and unloading the mold from the lateral direction.

On the other hand, if the mist collector can be installed adjacent to the hood above the main body of the die casting machine, the duct becomes unnecessary and the space problem can be solved.
When the duct is removed in this way, the inside of the hood is directly connected to the mist collector, so when the high temperature mist ignites in the hood, the flame penetrates into the mist collector, causing a fire in the mist collector and causing a serious accident. There is a possibility of being connected.

Due to the above circumstances, the duct must be arranged so as to have a certain length or longer so that the flame does not reach the mist collector. Therefore, the mist collector is installed in the die casting machine main body. It could not be placed on the top.

[0008]

DISCLOSURE OF THE INVENTION The inventors of the present invention have made earnest studies on the above-mentioned problems, and as a result, even if the flame is generated in the hood, the hood is prevented from reaching the suction port of the mist collector at worst. It has been found that the above-mentioned problem can be solved by forming a passage for exclusive use of the mist having a flame blocking function therein. Therefore, an object of the present invention is to dispose a mist collector above the main body of a die casting machine and adjacent to the mist hood, without requiring a duct, and to prevent the flame from being generated in the hood to reach the mist collector. It is to provide the hood for the mist of the die-casting machine that was not done.

[0009]

In order to achieve the above object, a hood for mist of a die casting machine according to the present invention is mounted on a mounting base arranged on an upper portion of a main body of the die casting machine, and includes an injection plunger of the die casting machine. What is claimed is: 1. A mist hood that covers the upper side of the apparatus and the upper side of the mold clamping apparatus including a pair of dies arranged to face each other, the hood including outer walls on the operating side and the non-operating side of the die casting machine, and the mold clamping apparatus side. In addition to the outer wall of the above, it has a double structure having an inner side wall which is arranged opposite to each of the outer side walls at a predetermined interval and is formed as a mist passage between the inner side wall and the outer side wall. To do.

In this case, preferably, a mist suction port is formed at the upper end of the inner side wall facing the outer side walls of the operating side and the non-operating side, and the outer side wall is further provided with the mold clamping device side. It is also possible to form a mist supply port to the mist collector disposed adjacent to the outer wall. Furthermore, the hood for the mist is mounted mainly on a fixed hood portion that sucks mist from the vicinity of the injection plunger, and on the mounting table so that the hood can be brought into contact with and separated from the fixed hood portion and is movable on the mounting table. And a movable hood portion for sucking mist from the side. In that case, it is possible to provide an attachment portion for mounting the mist collector on the moving hood portion.

The mist generated in the vicinity of the injection plunger and the mold rises inside the hood and is sucked from the suction port provided on the inner wall of the hood upper part. 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. There is. Such a mist-dedicated layered passage is lower in temperature than the inside of the hood, and it is difficult to supply air, so even if a flame reaches the suction port, it will spread into the layered passage and reach the supply port. Absent. That is, it has a flame blocking function structurally.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one example based on an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a mist hood according to the present invention, which is arranged above a main body of a horizontal injection and horizontal die-clamping type die casting machine, as viewed from the operating 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.
An injection device 12 is disposed on the right side of the injection device 12. The mold clamping device includes a fixed die plate 16 and a movable die plate 2.
2, link housing 28 and movable die plate 22
It includes a toggle mechanism 26 for advancing and retreating, and a cylinder 24, tie bar 25, etc. for advancing and retracting the toggle mechanism. Reference number 1
Reference numerals 8 and 20 are a fixed mold and a movable mold, respectively.

An U-shaped C frame 17 is fixedly coupled to the fixed die plate 16, and the injection device 1
Injection plunger 14 extending from 2 through the coupling
Is disposed between the C frame 17 and the fixed die plate 16, and the tip end thereof is slidably inserted into the injection sleeve 15. Reference numeral 32 is a spray head 34 at the tip.
It is mounted on the upper surface of the C frame 17 via a column by a spray device attached with, and can be rotated vertically and around the column.

Reference numeral 30 is a mount for the mist hood, which is supported in the horizontal direction at the left and right ends thereof by columns shown by a chain line. Reference numerals 36 and 38 are 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, and the injection plunger 1
The mist formed in the vicinity of 4 rises inside the fixed hood portion 36 and is sucked into the upper suction port 42 as shown by the arrow. Similarly, the mist formed in the vicinity of the pair of spaced apart dies rises inside the moving hood portion 38 and is sucked into the upper suction port 42 as shown by the arrow.

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 horizontally movable on the mounting base 30 by the roller 39 mounted on the lower side surface thereof. Reference numeral 40 is a mounting portion integrally formed with the movable hood portion 38, on which a mist collector 46 is mounted and fixed. Reference number 44
Is a connecting portion between the moving hood portion 38 and the mist collector 46. Reference numeral 48 is an air outlet after the mist treatment is performed inside the mist collector 46. The symbol L indicates the boundary line between the fixed hood portion 36 and the movable hood portion 38.

FIG. 2 is a plan view taken along the line AA of FIG. As shown in FIG. 2, an inner side wall 36B is arranged to face an outer side wall 36A of the fixed hood portion 36 on the operating side and an opposite side of the fixed hood portion 36 at a predetermined interval. Similarly,
Also on the movable hood portion 38, an inner side wall 38B is arranged facing the outer side wall 38A on the operation side and the opposite side with a predetermined interval. Furthermore, the inner wall 3 is formed at a predetermined distance from the outer wall 38C of the movable hood portion 38 on the side of the clamping device.
8D is arranged facing each other. A mist supply port to the adjacent mist collector 46 is formed in the substantially central portion of the outer wall 38C.

As shown in FIG. 2, the outer walls 36A, 38A and the inner walls 36B, 38B form a relatively thin layered space. As shown in FIG. 1, three suction ports 42 for the mist M are formed at the upper end of each inner wall 36B, 38B. The mist M is, as shown, the side walls 36A, 36B and 38A,
38B to the corner Z through the passage formed in the upper part, and from here to the connection portion 44 through the passage formed by the side walls 38C and 38D to be sucked into the mist collector 46. Has become. The inner walls 36B, 38B, 38D
Are not necessarily the outer walls 36A, 38A, 38 that they face
It is not necessary to form the inner wall over substantially the entire surface of C, and the inner side wall may be formed only in the portion corresponding to the passage of the mist M.

However, in the actual production, a partition plate or a baffle plate is appropriately arranged and fixed on each inner wall within a range where the suction force of the mist collector 46 is not significantly impaired, and various kinds of space are provided between the inner wall and the outer wall. It is also possible to form a mist passage. For example, at the corner portion Z of FIG. 2, a vertical partition plate indicated by a broken line is arranged so that the mist M coming from the right side is temporarily guided to the supply port position of the lower mist collector 46 at the upper portion between the side walls 38A and 38B. You can also Further, although not shown, an upper inner wall facing the upper surface of the mist hood is provided and a suction port is formed in the surface to guide the mist from the suction port to the upper passage formed by the side walls 38A and 38B. The passage may be formed.

Thus, the passage of the mist M is formed by the relatively low temperature and thin layer formed between the outer wall and the inner wall, and at least one corner portion of the mist passage is formed in such a layered passage. By providing it between the suction port and the supply port to the mist collector 46, it is possible to have a flame blocking function. In that case, if the vicinity of the layered 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.
Further, in the example shown in FIG. 1 and FIG. 2 described above, the mist hood is not an integrated 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. When the replacement is performed from above, the spray device 32
For maintenance. However, in order to clear these points, it is possible to lift the integrated hood with a crane and move it to another place.

[0020]

The mist hood according to the present invention is arranged opposite to the outer side walls of the die casting machine on the operating side and the non-operating side and the outer side wall of the mold clamping device with a predetermined gap therebetween. It has a double structure with an inner wall, and the 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 die cast. Since it can be placed adjacent to the mist hood located above the machine body, it does not require a duct unlike the past and it does not need to install a mist collector around the die casting machine body, so there is also a space problem. There is an effect that can be solved.

[Brief description of drawings]

FIG. 1 is a front view of a mist hood according to the present invention disposed above a main body of a horizontal injection, horizontal mold clamping type die casting machine, as viewed from the operating side of the die casting machine.

FIG. 2 is a plan view of a mist passage taken along the line AA of FIG.

[Explanation of symbols]

10 base 12 Injection device 14 Injection plunger 15 injection sleeve 16 Fixed die plate 17 C frame 18 Fixed mold 20 moving mold 22 Moving die plate 24 cylinders 25 tie bar 26 Toggle mechanism 28 link housing 30 mounting base 32 spray device 34 spray head 36 Fixed Hood 36A, 38A, 38C outer wall 36B, 38B, 38D inner wall 39 Laura 40 Mounting part 42 Suction port 44 connection 46 Mist collector 48 outlet L border M mist Z corner

Claims (6)

[Claims] 1. A mist which is mounted on a mounting base disposed on an upper part of a die casting machine main body and covers an upper side of an injection device including an injection plunger of the die casting machine and an upper side of a mold clamping device including a pair of opposingly arranged dies. A hood for a die casting machine, the hood being opposed to the outer walls on the operating side and the non-operating side of the die-casting machine and the outer wall on the mold clamping device side with a predetermined space provided therebetween. A hood with a mist-only passage for a die casting machine, which has a double-walled structure and a mist passage between the inner and outer walls. 2. The mist suction port is formed at an upper end portion of an inner wall facing the outer side walls of the operating side and the counter operating side, and the mist suction port is provided adjacent to the outer side wall. A hood with a mist-only passage for a die casting machine characterized by forming a mist supply port to the mist collector. 3. The mist suction port is formed at an upper end portion of an inner side wall facing the outer side walls on the operating side and the non-operating side according to claim 1, and the outer side wall on the mold clamping device side is formed. A hood provided with a mist dedicated passage for a die casting machine, characterized in that a mist supply port to a mist collector disposed adjacent to the mist is formed. 4. The mist hood according to claim 1, 2 or 3, further comprising an upper surface inner wall opposite to the upper surface outer wall of the mist hood at a predetermined interval, and the mist suction port is formed on the upper surface inner wall. A hood with a passage for exclusive use of mist for die casting machines. 5. The fixed hood portion for sucking mist mainly from the vicinity of the injection plunger, the fixed hood portion capable of coming into contact with and separating from the fixed hood portion, and the mounting base according to claim 1, 2, 3, or 4. It is mounted so that it can be moved on,
A hood provided with a mist-dedicated passage for a die casting machine, which is mainly composed of a moving hood portion that sucks mist from the mold clamping device side. 6. The hood having a passage for exclusive use of a mist for a die casting machine according to claim 5, wherein the movable hood portion is provided with a mounting portion for mounting a mist collector.