JP3575594B2 - Casting equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is a casting apparatus for a casting plant, particularly for assembling in a transport path for transporting a sand mold in a casting ready state in a direction toward and away from the casting apparatus, the mold having a gate. The present invention relates to a casting apparatus provided with a pouring machine for pouring water into a casting.
[0002]
[Prior art]
In foundries, sand molds are usually used as molds. These sand molds are then produced inside a formwork consisting of an upper part and a lower part. These two mold halves are combined after the upper and lower molds have been manufactured. The mold is provided with a runner. Such a runner is provided on the mold dividing surface when the mold is cast in an upright state, but is provided on the upper surface of the mold when the pouring section is horizontal. A large metal static pressure is generated during pouring. Such a static metal pressure pushes the molds in a direction to separate them from each other. Such phenomena, especially in the case of pouring in an upright position, must be prevented by appropriate lashing means provided on the two mold halves.
[0003]
Whether it is effective to make the pouring section horizontal or upright depends on the mold. In special cases, a pouring section with a rising gradient for pouring from below may also be required. Known casting plants are configured such that pouring of the mold can be done either vertically or horizontally. This is particularly true when the mold placed on the transport trolley is transported via the transport path in a direction toward the casting apparatus. Such a casting plant is therefore only suitable for upright or horizontal pouring. As a result, at least two plants are required for pouring the mold in an upright or horizontal manner.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described problems, and is intended to be capable of pouring a sand mold into an upright type or a horizontal type, or in an arbitrary state with respect to a transport direction, with a small structure cost. And propose a casting device in which the casting device is integrated with the existing transport path, and the pouring of the mold placed and transported on the transport trolley can be performed in any state. Make it an issue.
[0005]
[Means for solving the problem]
In order to solve the above-mentioned problems, the present invention provides a casting apparatus, wherein the casting apparatus has a receiving portion for a mold, and a clamping device for positioning the mold in the casting apparatus, The accommodating portion and the clamp device are arranged so as to be able to swing at least 90 ° in the casting device so that the pouring gate can contact the pouring gate.
[0006]
The casting mold in a casting-ready state placed and transported on the transport path is pushed into the housing of the casting apparatus. The storage section interrupts the transport path in the area of the casting apparatus and stores the mold. For example, when a mold is transported via a transporting trolley, the receiving part forms a part of the track of the transporting path. At this time, the length of the storage section is substantially equal to the length of the transporting vehicle. After pushing the mold onto the receiving part of the casting device, the clamping device is activated. The press plate of the clamping device grips the side of the mold opposite to the container, and as a result, the mold is sandwiched between the container and the press plate. The receiving part and the clamping device are arranged inside the casting device so as to be able to swing at least 90 °. As a result, for example, the mold conveyed in a horizontal state can be swung to take an upright posture. The connection to the sprue of the pouring machine can be made directly based on the swinging process, but can also be performed by pressing the spout of the pouring machine against the opening of the sprue. The mold runner is configured such that a contact surface for the nozzle of the pouring machine is formed at the mouth. The nozzle can be brought into close contact with such an abutment surface. In this case, even in the case of a sand mold bonded with clay, a flat abutment surface that abuts the opening of the pouring pipe under a predetermined pressure in order to guarantee a tight blockage of the metal is already sufficient by itself. Was. Then, through a mouth of the pouring machine, the molten metal is filled at a relatively low pouring pressure into a runner and a cavity formed horizontally in the mold.
[0007]
It is effective if the pouring machine is configured to be able to move in the height direction and / or in the horizontal direction within the plane. This is because, by this, the pressure at the time of pressing the nozzle of the pouring machine can be generated independently of the swinging motion.
[0008]
In the case of using a carrier for carrying the mold, the mold is fixed via pins so as not to shift with respect to the carrier. This pin is usually a component of the carrier and fits into the opening of the mold. It suffices here to have two pins that fit into each head side of the mold in each mold. Furthermore, in order to fix the upper frame and the lower frame so as not to be displaced from each other, it is known to insert a mandrel into one hole that is arranged in a straight line when the formwork is placed. Thus, when the form is placed on the carrier and transported, the clamping device need only press the form from above on the carrier with its press plate. As a result, the carrier can be oscillated arbitrarily about its longitudinal axis.
An advantage of the casting apparatus according to the invention is that the formwork can be transported horizontally on a single transport carriage. At that time, pouring can be selectively performed in a casting line either in an upright type or a horizontal type. After performing the upright type pouring in the casting apparatus, the mold is returned to a horizontal state and transported again. You can leave. Thus, the casting apparatus according to the invention can be used in a casting line in which the mold is poured in an upright manner.
[0009]
When the mold is transported without using the transport trolley, it is necessary to configure the housing of the casting apparatus so that the mold is supported on a flat surface and does not move laterally. The clamping device then only has to grip the opposing surfaces of the mold in this case, the press plate and the housing being configured to absorb the static pressure during pouring.
[0010]
Embodiment 1 of the present invention
Hereinafter, some embodiments of the present invention will be described in more detail with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an embodiment of a casting apparatus according to the present invention in a state where a mold to be poured is placed and transported.
FIG. 2 is a longitudinal sectional view corresponding to FIG. 1, but showing a state in which the mold is turned by 90 ° before pouring.
FIG. 3 is a view corresponding to FIG. 2, but showing a state in which pouring has been completed.
[0011]
4 to 6 show another embodiment of the casting apparatus according to the invention in various working positions. FIG. 7 is a plan view of the mold frame seated on the carrier, and a cross-sectional view taken along the line AA of a fixing portion between the carrier and the upper and lower frames of the mold. FIG. 8 corresponds to FIGS. 1 to 4, but shows another embodiment with a lifting type pouring machine.
[0012]
FIG. 1 is a longitudinal sectional view of a casting apparatus 30 configured according to the present invention. The casting device 30 has a receiving part 7 made of a track component on which the carrier 6 can be pushed. The transport vehicle 6 supports the molds 2 and 3 which are configured in a two-piece manner and have an upper frame and a lower frame. FIG. 7 is a plan view of the molds 2 and 3 and a cross-sectional view of the mold along a line AA. FIG. 7 shows a track section 7 provided with a carriage 6 having a seating surface. Mounted on this seat are two fixing pins 20 that fit into the appropriate holes 31 of the lower formwork 3. Thus, the lower half mold frame 3 is prevented from shifting with respect to the carrier. Further, the mandrel 19 is inserted into the hole 31 from the upper side, and the mandrel 19 reaches the lower mold 3. As a result, the upper mold is securely fixed to the lower mold.
[0013]
Two or more guide rollers 23 are arranged on each side of the formwork or the carrier in order to accurately guide the carrier or the carrier including the mold in the lateral direction. The guide roller 23 aligns the carrier 6 and thus the mold with respect to the casting machine. As a result, the state of the mold is accurately determined for the pouring machine 1 arranged laterally in the present embodiment.
[0014]
The receiving part, that is, the track component 7 in the embodiment of FIG. 1, is seated on an L-shaped frame 8. The lower arm 27 of the frame 8 is rotatably arranged on the swing bearing 14. The left end of the lower arm 27 is supported by the support 13. The tilt cylinder 9 is operatively connected to the arm 27. The operation of the tilting cylinder 9 allows the L-shaped frame 8 to swing until, for example, the state shown in FIG.
[0015]
A clamp device is fixed to the arm 32 of the L-shaped frame. This frame comprises a press arm 11 having a press plate 10 and a press cylinder 12. The molds 2, 3 are firmly pressed against the carrier 6, and thus against the support 7, by the press plate 11 which presses the upper mold half 2 in a plane. As a result, as shown in FIGS. 2 and 3, when the mold is subsequently rocked, the mold is reliably held even in a state where it is rocked by 90 °.
[0016]
The mold itself has a cavity 4 with a gate 5. Further, a blocking hole 15 is provided in the sand of the mold. As shown in FIG. 3, the blocking hole serves to block the gate by sliding the sand stopper. As a result, the pouring machine 1 can be separated from the mold in a state where the material has not yet been cured in the cavity 4 and the sprue 5. Thereby, the frequency of performing the work can be significantly increased.
[0017]
Further, the casting device 30 has a pouring machine that can be hermetically sealed via a cap 33. Below the cap 33, a closed-type holding furnace capable of applying a pressure required for pouring via the pressure gas inlet 17 is formed. Thus, the molten metal surface 26 descends in the center, rises in the feed port as well as in the space 28 and finally reaches the nozzle. The nozzle comes into close contact with the gate 5 during pouring. In this case, the pouring machine 1 is slid laterally by the feed cylinder 25 in order to create an airtight connection. As a result, the nozzle 18 is pressed against the mold at a predetermined pressure. By subsequently increasing the pressure, the molten metal is guided into the mold and finally the cavity 4 is filled with such a liquid substance. Thereafter, by operating the shutoff cylinder 16, the shutoff pin of the shutoff cylinder 16 enters the shutoff hole and shuts off the gate 5. Thereafter, when the shut-off pin is pulled back and the pouring machine 1 is moved backward, the molds 2 and 3 return to their initial positions by swinging, and the mold whose pouring has been completed can be replaced with a new mold. Become like These steps are repeated in the same manner as described above.
[0018]
Embodiment 2 of the present invention
4 to 6 show another embodiment according to the invention. This embodiment differs from the embodiment according to FIGS. 1 to 3 in that a rotary rim 34 in which the housing 7 and the clamping devices 10, 11, 12 are positioned and fixed is used instead of an L-shaped frame. Is different. A rotary rim of this type is seated on two support rollers 22 and is driven via friction rollers 24. The pouring and treatment of the molds 2 and 3 are performed according to the procedure shown in FIGS.
[0019]
FIG. 8 shows a casting apparatus corresponding to the embodiment according to FIGS. The difference of the embodiment shown in FIG. 8 from the embodiment of FIGS. 1 to 3 is that the pouring machine 1 is arranged below the molds 2, 3 which have been swung by 90 °. As a result, in order to realize an airtight connection to the gate 5, it is necessary to raise the pouring machine 1. The lifting operation is performed via the lifting cylinder 35. Furthermore, unlike the embodiment of FIGS. 1 to 3, the piston rod 29 of the shut-off cylinder 16 is mounted on the press arm 11 of the clamping device. In other respects, the function and operation of this embodiment are the same as those described with reference to FIGS.
[0020]
【The invention's effect】
As is apparent from the above description, the present invention provides a method for assembling a casting apparatus for a casting plant in a transport path for transporting a sand mold in a casting ready state in a direction toward a casting apparatus and in a direction away from the casting apparatus. , with a pouring machine for performing pouring into a mold having a sprue, the casting apparatus, the casting apparatus, and the accommodating portion of the mold, a clamp device for positioning the mold in the casting apparatus And that the accommodating portion and the clamping device are arranged so as to be able to swing at least 90 ° in the casting device so that the pouring port of the pouring machine can come into contact with the pouring port of the mold. The casting equipment can be integrated into the existing transport path, while allowing the pouring of the sand mold in an upright or horizontal type or in any direction in the transport direction with little construction cost. On the transport trolley The effect on the industrial world is remarkable, for example, pouring of the molten metal into the mold being conveyed can be performed in any state.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of a casting apparatus in a state in which a mold is conveyed.
FIG. 2 is a longitudinal sectional view corresponding to FIG. 1, showing a state in which the mold is turned by 90 ° before pouring.
FIG. 3 is a view corresponding to FIG. 2 and shows a state in which pouring has been completed.
FIG. 4 shows another embodiment of a casting apparatus according to the invention in various working positions.
FIG. 5 shows another embodiment of the casting apparatus according to the invention in various working positions.
FIG. 6 shows another embodiment of the casting apparatus according to the invention in various working positions.
FIG. 7 is a plan view of a mold frame seated on the carrier, and an AA cross-sectional view of a fixing portion between the carrier and the upper and lower frames of the mold.
FIG. 8 corresponds to FIGS. 1 to 4, but shows another embodiment provided with a vertically movable pouring machine.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 pouring machine 2 upper mold frame 3 lower mold frame 5 gate 6 transfer carriage 7 housing section 8 L-shaped frame 9 tilting cylinder 10 press plate 11 press arm 12 press cylinder 13 support 14 center of rotation 19 mandrel 20 fixing pin 22 Support roller 24 friction wheel drive unit 30 casting device 32 arm

Claims (11)

Assembling the casting plant for casting device 30 to the conveying path for conveying the sand molds 2 and 3 of the casting ready in a direction away from the direction and casting apparatus 30 toward the casting apparatus 30, into the mold 2, 3 provided with a sprue 5 In the casting apparatus 30 equipped with the pouring machine 1 for performing the pouring of the casting apparatus 30, the casting apparatus 30, the receiving portion 7 for the molds 2, 3, and for positioning the molds 2, 3 in the casting apparatus 30 And the accommodating portion 7 and the clamp devices 10, 11 so that the pouring port 18 of the pouring machine 1 can be brought into contact with the pouring port 5 of the molds 2, 3. Is disposed in the casting apparatus 30 so as to be able to swing at least 90 °. 2. The casting apparatus according to claim 1 , wherein the accommodation section 7 has a fixing pin 20 for the mold. 3. The casting apparatus according to claim 1, wherein the housing 7 includes a transport path. The casting apparatus according to any one of claims 1 to 3 , wherein the housing portion and the clamp device are fixed to an L-shaped frame, and the frame swings at one end thereof. A casting apparatus, which is supported by a movable member 14 and can be supported by a support 13 on a side facing the support. 5. The casting apparatus according to claim 4 , wherein the tilting cylinder is operatively connected to the L-shaped frame. The casting apparatus according to any one of claims 1 to 3, wherein the housing portion 7 and the clamp devices 10, 11, and 12 are disposed inside the rotary rim 34, and the rotary rim 34 A casting device, which is surrounded by at least three rollers 22, 24 distributed around the circumference of the rim, at least one of said rollers being driven. The casting apparatus according to any one of claims 1 to 6, wherein the pouring machine (1) is movable sideways and / or vertically movable. The casting apparatus according to any one of claims 1 to 7, wherein the casting apparatus (30) includes a mechanism (16) for closing the gate (5). The casting device according to any one of claims 1 to 8 , wherein the fixing device includes a fixing pin 20 that is coupled to the housing portion and that can be inserted into the hole 31 of the mold 3 of the molds 2 and 3. A casting apparatus comprising: The casting apparatus according to claim 9 , wherein the fixing pin (20) is attached to the carrier (6). In casting apparatus according to any one of claims 1 to 10, the two half mold 2, 3 of the mold by inserting a mandrel 19 into the two holes 31 of the half-mold 2, 3 of the mold A casting device, wherein the casting device is fixed so as not to be shifted from each other .

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