JP6712006B2 - Post-processing equipment for castings - Google Patents

Description

The present invention relates to a post-treatment device that performs post-treatment such as cooling of a cast product in a high temperature state immediately after casting.

BACKGROUND ART Cast products manufactured from cast rough materials made of aluminum or the like are widely used as constituent parts of various products including automobiles. Many of the cast products have complicated structures, such as large and small holes provided as openings and hollows inside. In this casting with a complicated structure, a core according to its configuration is placed in a mold for molding the casting, and the molten metal casts the core into a molded product with a complicated structure as designed. Has been done.

Since the core used in the manufacturing process of the cast product is made of sand or the like, it adheres to and remains on the cast product as foreign matter such as sand after casting. The core is indispensable for casting, but it must be removed after casting because it adheres to the casting as foreign matter such as sand and remains. Therefore, in the post-casting process, the cast product is continuously blown to remove foreign matter such as sand, and a sand removing device is installed to remove the core material such as sand. It is being appreciated. For example, in Patent Document 1, there is provided a work vibrating sand remover for removing a core sand adhering to a hollow portion of a work by vibrating a cast product (work) formed by casting, such as an automobile part. There is disclosed a vibrating sand removing device which is held on a vibrating base plate and is vibrated by one vibrating motor to drop the vibrating sand plate.

Further, as a post-casting step, a cooling step of cooling the cast product from a high temperature area immediately after casting to a low temperature area that can be handled by an operator is required. In order to maintain/improve the production efficiency of the product, it is necessary to increase the cooling efficiency and to cool the product as rapidly as possible. Therefore, a cooling device for transferring the cast product intermittently in the longitudinal direction has also been proposed (for example, See Patent Document 2.).

As a post-process of casting, the cast product after casting is cooled and then transferred to a sand removing device or a weir cutting device, where post-processing such as removal of casting sand and removal of a weir (gate) is performed. In some cases, a deburring device, an air blow device, or an ultrasonic cleaning device may be subjected to another post-treatment for commercialization. These post-treatments are called a finishing line, which is composed of a core molding machine, a casting machine, and a cooling device, and is distinguished from a molding line for molding a cast product.

JP 2012-050990 A JP, 2010-60184, A

In aluminum casting that uses a core for casting, it is inevitable that sand and dust are generated and scattered. This is the same both in the molding line and the finishing line, and the generation and scattering of sand and dust in the entire casting line poses a problem, which causes a problem of deteriorating the working environment and the environment in the factory.

In each of the conventional devices described above, it is necessary to attach a dust collector to each facility and each device for the generation and scattering of sand and dust, and therefore there is also a problem that an extra space in the factory must be secured. ..

Therefore, the present invention has been made in view of the above problems, while maintaining a good working environment and factory environment effectively functioning against the generation and scattering of sand and dust, the space in the factory It is an object of the present invention to provide a post-treatment device for a cast product, which can ensure a sufficient margin.

In order to solve the above problems, the post-treatment device for a cast product according to the present invention is a cooling unit that cools a cast product immediately after casting with cooling air, and is arranged below the cooling unit, and the cooling is performed in the cooling unit. A sand removal unit for removing the casting sand adhering to the casting by hitting the cast product with a hammer, and a sand recovery unit disposed below the sand removal unit for recovering the removed sand. The cooling unit is provided with a cooling air used for cooling in the cooling unit and a dust collecting unit for collecting fine sand of sand contained in the cooling air.

According to this, since the cooling unit, the sand removing unit, and the sand collecting unit are vertically arranged, generation and scattering of casting sand and the like can be suppressed, and the working environment and the environment in the factory can be kept good. Further, since one fine dust collecting portion collects and collects fine-grained sand and the like, it is not necessary to install a dust collector in each facility and each device, and it is possible to secure a space in the factory.

Here, it is preferable that a cushioning unit is provided between the cooling unit and the sand removing unit to prevent the vibration generated in the sand removing unit from propagating to the cooling unit.

According to this, it is possible to prevent the vibration generated by the impact of the sand removing unit from propagating to the cooling unit, so that the safety of the device is enhanced.

Further, the dust collecting unit includes a water sprinkling unit that cools the cooling air and removes fine sand particles, and a cooling air circulation unit that circulates the cooling air cooled in the water sprinkling unit to the cooling unit. preferable.

According to this, since the device is a semi-sealed type, it is possible to further prevent the sand in the device and the air in the factory from being separated from each other and scattering of the sand and dust in the factory.

As described above, according to the post-treatment apparatus for cast products according to the present invention, effective measures are taken against the generation and scattering of casting sand and dust to keep the working environment and the factory environment good, and the space in the factory is marginal. The space can be secured and the space can be effectively used.

It is a figure which shows the structural example of the post-processing apparatus which concerns on embodiment of this invention. It is a figure which shows another structural example of a post-processing apparatus.

Hereinafter, a post-treatment device for a cast product according to the present invention will be described with reference to the drawings.

FIG. 1 is a diagram schematically showing a configuration example of a post-processing device according to an embodiment of the present invention.

The post-treatment device 1 is a device for performing post-treatment after casting for cooling a cast product in a high temperature state after casting to remove sand and dust. Here, as a cast product, an engine head of an automobile cast by a low-pressure casting machine is assumed, and the post-treatment device 1 cools the engine head in a high temperature state after casting to remove casting sand and the like, Post-processing after casting is performed so that it can be quickly carried out to the subsequent process.

The post-treatment device 1 is roughly provided with a cooling unit 11, a sand removing unit 12, and a dust collecting unit 17. In the cooling unit 11, the in-plant air is used as cooling air to cool the cast product 3, and after cooling. After purifying the air in the dust collector 17, the air is discharged into the factory.

The cooling unit 11 is a space (cooling chamber) for cooling the cast product 3. The cooling unit 11 is configured by stacking a plurality of cooling chambers (three in this case) in the vertical direction. The two cast products 3 are sequentially carried into the respective cooling chambers from the first stage to the third stage by the carry-in/carry-out means 4 such as a robot or an elevator, and are sequentially carried out after cooling for a predetermined time.

The cast product 3 carried out from the cooling unit 11 is successively carried into the sand removing unit 12 arranged below the third-stage cooling chamber, and undergoes sand removing processing there.

The sand removing unit 12 is vertically arranged below the cooling unit 11, and removes the sand such as the sand adhered to the casting 3. The sand removing unit 12 includes an air hammer 13, and removes casting sand and the like from the casting 3 by the impact of the air hammer 13 and the vibration associated with the impact. The removed sand and the like are recovered by the sand recovery unit 15 and the box type conveyor arranged at the bottom of the sand removal unit 12. On the other hand, among the casting sand and the like, floating fine casting sand and dust pass through the duct 16 and flow into the dust collecting portion 17 together with the cooled air, and are collected in the dust collecting portion 17 as described later. .

Between the cooling unit 11 and the sand removing unit 12, a buffer unit 14 made of a vibration-proof rubber or the like is provided so that the vibration generated in the sand removing unit 12 does not propagate to the cooling unit 11. Here, an example is shown in which a cushioning material is laid on the bottom surface of the third-stage cooling chamber. The cushioning material may be laid on the entire bottom surface of the cooling chamber or may be a part thereof. Further, a sound absorbing material may be laid on a part or the whole of the inner surface of the sand removing unit 12 to attenuate the noise of hammer impact.

The cast products 3 that have undergone sand removal processing in the sand removal unit 12 are sequentially carried out by the robot and the carry-in/carry-out means 4 and transferred to the next step.

The duct 16 connects the sand removing unit 12 and the dust collecting unit 17 to each other. The air used for cooling in the cooling unit 11 flows from the sand removing unit 12 to the dust collecting unit 17 through the duct 16. Further, at this time, in the sand removing unit 12, fine particles of floating sand or the like also flow into the dust collecting unit 17 through the duct 16.

The dust collecting unit 17 includes a dust collecting filter 18 and a suction/exhaust unit 19, and purifies the cooled air and discharges it into the factory. The dust collecting filter 18 is a filter that collects and collects fine sand of sand or the like that has flowed into the dust collecting portion 17 through the duct 16. The suction/exhaust unit 19 is a fan that sucks the cooled air purified by the dust collecting filter 18 and discharges the air to the outside of the apparatus.

In the post-processing apparatus 1 having such a configuration, the cooling unit, the sand removing unit, and the sand collecting unit are vertically arranged, so that it can be effective as a countermeasure against the generation and scattering of casting sand and the like. That is, unlike the conventional case, the molding line and the finishing line are distinguished from each other, and there is no possibility that the sand and the like are generated and scattered in each equipment and each device to deteriorate the environment in the factory. In addition, because fine dust sand and dust generated in the cooling unit and sand removal unit are collected and collected in one dust collection unit that is attached, a cooling device, a sand removal device, and a dust collector attached to these are installed. The space of can be omitted, and the space in the factory can be secured.

FIG. 2 is a diagram showing another configuration example of the post-processing device.

The post-processing device 2 is common to the post-processing device 1 in that the post-processing device 2 includes a cooling unit 11, a sand removing unit 12, and a dust collecting unit 20. Descriptions of the common points are omitted, and the dust collecting unit 20 different from the post-processing apparatus 1 will be mainly described.

The dust collecting unit 20 includes a water spray nozzle 21, a tank 22, and a cooling air circulation means 23. When the air used for cooling, the fine sand, and the like flow into the dust collecting unit 20 through the duct 16, the water is sprayed by the water spray nozzle 21, which is a water spray unit. The fine water, such as sand, is removed from the air used for cooling by this water spray, and is gradually deposited on the bottom of the tank 22.
The air used for cooling is cooled again by this water spray, and is reused for cooling in the cooling unit 11 via the cooling air circulation means 23 such as a pipe and a blower.

The water sprinkled by the sprinkling nozzle 21 may also be supplied by another independent water supply means, but for example, the accumulated water in the tank 22 is circulated to the sprinkling nozzle 21 for reuse by using a water circulating means such as a circulation pump. You may.

The post-treatment device 2 having such a configuration circulates the air inside the device to cool the casting 3 and opens and closes the device only when the casting 3 is carried in and out. Since it is isolated from the internal air, it is possible to prevent casting sand and dust from scattering in the factory.

As described above, the post-treatment device for a cast product according to the present invention has been described based on the embodiment, but the present invention is not limited to this, the object of the present invention can be achieved, and the gist of the invention is not deviated. Various design changes are possible within the scope, and all of them are included in the scope of the invention.

For example, in the above-described embodiment, the sand removal section removes the casting sand and dust by the impact of the air hammer and the vibration associated with the impact, but a vibration generator may be additionally provided in addition to the air hammer.

INDUSTRIAL APPLICABILITY The post-treatment device for a cast product according to the present invention is useful as a post-treatment device for cooling a cast product in a high temperature state immediately after casting and performing a post-treatment such as sand removal.

1, 2 Post-treatment device 3 Casting product 4 Carrying-in/carrying-out means 11 Cooling part 12 Sand removing part 13 Air hammer 14 Buffer part 15 Sand collecting part 16 Duct 17, 20 Dust collecting part 18 Dust collecting filter 19 Suction/exhaust part 21 Sprinkling nozzle 22 Tank 23 Cooling air circulation means

Claims (3)

A cooling unit that cools the cast product immediately after casting with cooling air,
A sand removing unit that is arranged below the cooling unit, removes the casting sand adhering to the cast product by hitting with a hammer to the cast product cooled in the cooling unit,
A sand recovery unit disposed below the sand removal unit for recovering the removed sand.
A post-treatment device for a cast product, comprising: a cooling air used for cooling in the cooling part; and a dust collecting part for collecting fine-grained sand contained in the cooling air. The post-treatment of the cast product according to claim 1, further comprising: a cushioning unit provided between the cooling unit and the sand removing unit to prevent a vibration generated in the sand removing unit from propagating to the cooling unit. apparatus. The dust collecting portion is
A sprinkler that cools the cooling air and removes fine-grained sand.
The post-treatment device for a cast product according to claim 1 or 2, further comprising: a cooling air circulation unit that circulates the cooling air cooled in the water sprinkling unit to the cooling unit.

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