JPH0890209A - Method for carrying cast product and device for carrying cast product - Google Patents

Abstract

PURPOSE: To improve the carrying efficiency and to prevent the raise of a cost caused by the development of a trouble by carrying a cast product from a shake-out device to a shearing device for sprue through a turn-over process. CONSTITUTION: At the time of carrying the cast product 1 from the shake-out device S for cast product to the shearing device Y for sprue with a transferring device T after once turning over the vertical posture of the cast product 1 with the turn-over device H, the cast product is returned back to the original posture and carried. Further, air-blowing is executed to the cast product 11 at the time of turning over. Since the cast product 1 is carried from the shake- out device S to the shearing device Y for sprue through the turn-over process by the characteristic means in this carrying process for cast product, even if the sprue 1 is fallen out on the cast product 1 by the vibration of the shake- out, the fall-out piece of the sprue is dropped downward together with the sand and the cutting powder at the time of turning over, it can be prevented to develop the trouble to a clamping operation of the clamping device in the following process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cast product conveying method for conveying a cast product from a cast product sand removing device to the cast product gate cutting device, and a cast product used in the cast product conveying method. Concerning transportation equipment.

[0002]

2. Description of the Related Art As a conventional method for conveying cast products of this type, there has been adopted a method in which a cast product which has been sand-removed by a sand-removing device is conveyed to a sprue cutting device in its vertical position.

Further, as a conventional casting product transfer facility, there is a transfer device which transfers a cast product in the sand removing device to the gate cutting device while keeping the vertical position.

[0004]

The problem of removing sand from a casting is to remove sand-type sand and chips adhering to the casting. One of the typical methods is to apply vibration to the casting. There is a method in which the sand and chips are separated from the cast product by the vibration and dropped. Therefore, as the sand removing device, a device having a vibration generating mechanism for applying vibration to the cast product is used. In addition, when cutting the sprue of a cast product, the part of the cast product (spout) that corresponds to the pouring spout part of the mold is cut off from the cast product and finished into a predetermined shape. The method of cutting off is taken. Therefore, as the sprue cutting device, a device having a cutting mechanism for cutting the sprue of the cast product and a position adjusting mechanism for the cast product for ensuring the cutting position accuracy with respect to the cast product is used. Incidentally, as the alignment mechanism, a part of a clamp device for holding and fixing the casting product is provided with a projection for positioning which is fitted into a portion of the casting product such as a recess or a through hole that is easy to align and guides the position. The ones provided are often used. However,
As the sand is removed as described above, a part of the sprue may be missing due to the vibration applied to the casting.

According to the conventional casting product transfer method and cast product transfer facility described above, for example, a part of the sprue missing from the cast product is caught in the recess or through hole of the cast product and remains caught. If it happens, it will be an obstacle to clamp the cast product with the clamp device of the sprue cutting device, there is a risk that it will not be able to clamp, or if it is forcibly clamped, the clamp device or the cast product will be damaged, and those troubles will occur. Therefore, there is a drawback that the transport efficiency is lowered and the cost is easily increased.

Therefore, in view of the above-mentioned drawbacks, an object of the present invention is to provide a method for conveying a cast product, in which even if the gate of the cast product is lost due to sand removal by a sand removing device, the missing piece is unlikely to remain in the cast product, and , Providing casting equipment transportation equipment.

[0007]

Means for Solving the Problems A feature of the casting product conveying method of the present invention is that a casting product sanded by a sand removing device is removed from a casting product sand removing device through a reversing step of reversing the vertical posture of the casting product. The casting product is conveyed to the gate of the casting product (corresponding to claim 1).

Particularly, it is preferable to perform air blowing to the cast product during the transportation (corresponding to claim 2).

The characteristic feature of the casting product transporting equipment of the present invention is that the casting device is provided with a clamp device capable of holding the casting product during transportation by the transporting device, and the casting product held by the clamping device is reversible. In the clamp device, a pair of clamp parts that can separately hold both sides of the cast product are rotatably held around the horizontal axis along the facing direction and are held by the clamp device. The cast product is provided in a reversible rotation drive mechanism so as to be synchronously rotatable about the horizontal axis, and a pair of withdrawal / retractable drive operation of the sandwiching drive or the sandwiching release drive of the cast product by the pair of clamp portions is possible. A drive type actuator is continuously provided on the outside of each of the pair of clamp portions in the facing direction,
A sensor that can detect the withdrawal state for driving the pair of retractable drive type actuators is provided outside each of the pair of clamp portions in the facing direction (corresponding to claim 3).

In particular, the retractable actuator is
It is a double rod cylinder, and it is preferable that the sensor is arranged so that an outer end portion of the double rod cylinder can be detected (corresponding to claim 4). It is preferable that the center is arranged in alignment with the horizontal axis (corresponding to claim 5).

[0011]

According to the characteristic means of the casting product conveying method of the present invention,
Since the casting product is conveyed from the sand removing device to the gate cutting device through the reversing step, even if the gate is missing on the casting product due to the vibration of the sand removing device, when the casting product is inverted, It is possible to prevent the missing pieces of No. 2 from dropping downward together with the sand and the cutting chips, and preventing the missing pieces of the sprue from interfering with the clamp operation of the clamp device in the subsequent step (corresponding to claim 1).

[0012] In particular, during the transportation, by blowing air into the cast product, it is possible to more reliably remove the missing piece of the sprue, and to remove sand and cutting chips that could not be completely removed by the sand removing device. An external force different from the vibration when the sand is removed can be applied (corresponding to claim 2).

In the step of reversing the cast product, it is possible to invert the cast product in a normal posture and convey it as it is, or to invert it once and then return it to its original posture and convey it.

According to the characteristic construction of the casting product conveying equipment of the present invention, a clamp device is provided which can hold the casting product during the conveyance by the conveying device, and the casting product held by the clamping device can be rotated so as to be reversible. In the clamp device, which is provided with a drive mechanism, a pair of clamp parts capable of separately holding both sides of the cast product are held by the clamp device so as to be rotatable around a horizontal axis along the opposing direction. The cast product in the above state is provided by a reversible rotation drive mechanism so as to be rotatable synchronously around the horizontal axis, and a pair of clamp drive or clamp release drive of the cast product by the pair of clamp parts can be freely operated. Extending / retracting drive type actuators are separately provided in series on the outer sides of the pair of clamp parts in the facing direction to detect the retracting / retracting state for driving the pair of retractable drive type actuators Since the existing sensor is provided on the outer side in the facing direction of each of the pair of clamp parts, not only can the cast product be conveyed through the reversing step, but also below the clamped cast product. It is possible to operate without arranging the clamp part, actuator, and sensor, and as a result, when clamping the cast product and reversing it around the horizontal axis, sand, chips, etc. shaken off from the cast product The gate can be made difficult to contact the clamp device (corresponding to claim 3).

In particular, the retractable drive type actuator is
It is a double rod cylinder, and if the outer ends of the double rod cylinders are arranged so that they can be detected, a distance from the cast product is maintained, and the adverse effects of sand, chips, and sprues spattered off. The posture of the actuator can be detected in a more difficult state (corresponding to claim 4).

Furthermore, if the clamp part is arranged so that the center of holding the cast product with respect to the horizontal axis is aligned with the horizontal axis, the cast product can be rotated around its central axis, and the radius of gyration can be reduced. At a minimum, it is possible to prevent the sand and chips that are shaken off from the cast product from being accidentally scattered, and it is possible to perform the inversion of the cast product with a small rotational driving force (corresponding to claim 5). ).

[0017]

As described above, according to the method for conveying a cast product according to the first aspect of the present invention, even if a part of the sprue of the cast product is lost due to sand removal by the sand removing device, the missing piece is cast. Since it is possible to make it difficult for the cast product to remain, it is possible to prevent the cast product from being clamped as in the past, or being forced to clamp it and damaging the clamp device or the cast product. And the cost increase due to the occurrence of trouble can be prevented.

According to the casting product carrying method of the second aspect of the present invention, in addition to the effect of the casting product carrying method of the first aspect, the casting product carrying method described above can be achieved. By the action, sand removal can be promoted, and it becomes possible to more appropriately carry the cast product.

On the other hand, according to the casting product conveying facility of the third aspect of the present invention, the sand and the cutting chips are caught in the drive system when the sand and the cutting chips are shaken off from the casting product, and the wear is severe. It is possible to reduce the occurrence of troubles by preventing the adverse effects such as the failure or the failure due to the impact of the missing sprue and the malfunction of the sensor system.

Further, according to the casting product transfer facility of the fourth aspect of the present invention, it is possible to prevent malfunction of the device, to realize automatic operation with less trouble, and to further improve the transfer efficiency. .

Further, according to the casting product transportation facility of the fifth aspect of the present invention, by the above-described operation, it is possible to improve the economical efficiency without consuming unnecessary power and save space. It will be possible to realize this.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 5 shows the casting finish line.
An example L of the casting product transportation equipment of the present invention is provided on the transportation line from the sand removing device S of the casting product 1 to the sprue cutting device Y of the casting product 1.
Shows the situation in which the sand removing device S is installed.
And a sprue cutting device Y, a reversing device H capable of reversing the casting 1 is provided, and the castings 1 in a state of being arranged in each of the devices S, H, Y are conveyed on a transfer line. A transfer device (an example of a transfer device) T that collectively transfers along a predetermined pitch along a line is provided below the transfer line. The casting product transfer facility L is configured to include the reversing device H and the transfer device T.

The method for transferring the cast product according to this embodiment is shown in FIG. 4 when the cast product 1 is transferred from the sand removing device S to the gate cutting device Y by the transfer device T shown in FIGS. Thus, the vertical position of the cast product 1 is once inverted by the reversing device H and then returned to the original position and conveyed, and further, the blown air to the cast product 1 is performed at the time of the reverse. .

Explaining each component of the transfer line, first, the cast product 1 is a cylinder head member of an engine, and there are a plurality of types of cylinder head members having different shapes, which are sequentially finished in the cast product. It is sent to the processing line and undergoes a predetermined processing step to be finished into a predetermined shape. Further, each of the castings 1 is formed by a low pressure casting method, and each of the castings 1 in the state of being sent to the casting product finishing line has a plurality of through holes for intake and exhaust of the engine. 1a (see FIG. 1) are provided respectively, and a sprue part 1b corresponding to the pouring spout part of the mold remains, and the sprue part 1b is cut by the sprue cutting device Y.

The sand removing device S is provided with an air hammer 2 which can be brought into contact with a cast product 1 placed on the device (see FIG. 5), and the air hammer 2 is attached to the cast product 1. It is configured so that it can be pressed and vibrated by hitting, and sand and chips of the mold adhering to the inside and outside of the casting 1 can be removed by the vibration. In the sand removing work, the casting product 1 can be vibrated extremely efficiently by setting the force for pressing the air hammer 2 against the casting product 1 to be smaller than the vibration force (striking force) of the air hammer 2 itself. It is possible to improve the sand removal effect, and the sand removal device S is configured to be able to vibrate under this condition.

The sprue cutting device Y moves along a cutting direction a fixing mechanism 3 for fixing the cast product 1 at a predetermined position of the device and a sprue part 1b of the cast product 1 fixed by the fixing mechanism 3. A cutting mechanism 4 for cutting off is provided.

The reversing device H will be described. As shown in FIGS. 1 and 2, a clamp device 5 that can hold the cast product 1 is provided, and the cast product 1 is held by the clamp device 5.
Is provided with a reversible rotation drive mechanism 6, a device body 7 to which the clamp device 5 and the rotation drive mechanism 6 are attached, and a support frame F for supporting the device body 7 in a vertically movable manner. is there.

As shown in FIG. 3, the clamp device 5 is provided with a pair of clamp portions 8 capable of separately holding both ends of the casting 1 and rotatable about a horizontal axis P along the facing direction. In addition, by the rotation drive mechanism 6, the horizontal axis P
A pair of air cylinders 9 (an example of an advance / retreat drive actuator), which are provided so as to be synchronously rotationally driven around them, and which can be driven to perform a clamping drive or a clamping release drive of the cast product 1 by the pair of clamp parts 8, Each of the clamp parts 8 is continuously connected to the outside in the facing direction.

The clamp portion 8 is attached to the apparatus main body 7 in a state where the rotation axis is aligned with the horizontal axis P, and is rotatable about the horizontal axis P with respect to the apparatus main body 7. The mounting body 10 is mounted so as not to move in the direction of the horizontal axis P, and the pair of holding members 11 that can hold the upper and lower edges of the casting 1 are held in a state where the tip portions can approach and separate from each other. An operating member 12 pivotally connected to each of the mounting bodies 10 and capable of swinging the pair of sandwiching members 11 about a pivot axis is provided between the sandwiching members 11 and the air cylinder 9. 10 is provided in the state of being fitted internally.

The mounting body 10 is integrally provided with a cylindrical portion 10a which is a mounting portion to the device body 7 and a mounting portion 10b which pivotally connects the holding member 11 to the device body 7. It is attached via a bearing 13.
Further, a belt receiving portion 10c for installing the timing belt B for rotating the mounting body 10 around the horizontal axis P is formed on the outer peripheral portion of the end of the cylindrical portion 10a.

As shown in the drawing, each of the pair of holding members 11 is formed in a substantially "L" shape in a side view, and a tip end thereof is provided with a contact portion 11a to the cast product 1. It is provided and the base end portion is attached to the attachment portion 10b of the attachment body 10. A link portion 12a of the operating member 12 is pivotally connected to the intermediate portion. By moving the operating member 12 along the horizontal axis P direction, the moving force is transmitted to the intermediate portion of the holding member 11 so that the both holding members 11 are moved around the pivot axis of the mounting portion 10b. Can be swung so as to be close to or apart from each other, and the cast product 1 can be clamped or unclamped. The sandwiching member 1 arranged above the pair of sandwiching members 11
The abutment portion 11a of No. 1 is formed so that the abutment angle to the cast product 1 can be freely changed, and at a more preferable angle with respect to another cast product 1 in which the shape of the sandwiched portion of the cast product 1 is different. It is structured so that it can be contacted.

The operation member 12 has a base end portion that is movable relative to the cylindrical portion 10a of the mounting body 10 along the horizontal axis P direction and around the horizontal axis P. It is fitted in a state of being integrally rotatable, and while transmitting the rotational force of the mounting body 10 to the sandwiching member 11, the retracting force of the air cylinder 9 can be converted and transmitted to the swinging force of the sandwiching member 11. It is configured so that it can be done. Further, the operating member 12 is connected to the air cylinder 9 via a spherical joint 14 so as to be relatively rotatable around the horizontal axis P and integrally movable along the horizontal axis P direction. .

The rotary drive mechanism 6 is provided above the clamp device 5 along the horizontal axis P, and the rotary shaft 6a is fixed to both ends of the rotary shaft 6a. A pulley 6b for driving the belt B, and a motor 6 that can rotate the rotation shaft 6a around its rotation axis.
c, a pair of timing belts B provided separately over the respective pulleys 6b and the belt receiving portions 10c of the pair of mounting bodies 10, and the motor 6
By rotationally driving c, the rotary shaft 6a integrally rotates, and the rotational force is transmitted from the pulley 6b to the clamp device 5 via the timing belt B, so that both the sandwiching members 11 move around the horizontal axis core. It is possible to rotate in synchronization with.

Further, a vertical drive device 15 which is capable of vertically moving the clamp device 5 and the rotation drive mechanism 6 with respect to the support frame F is attached to the device main body 7 at a position above the clamp device 5. . When the casting product 1 conveyed and placed on the placing portion 7a (see FIG. 4) for placing the casting product 1 on the support frame F is clamped by the clamp device 5 and inverted by the rotation drive mechanism 6. , The vertical drive device 1
By lifting the clamp device 5 and the rotation drive mechanism 6 by means of 5, it becomes possible to reverse the casting part 1 without touching the placing part 7a. Further, by mounting the vertical drive device 15 above the clamp device 5, it is possible to make it difficult for sand, chips, and missing gates falling from the casting 1 to splash on the vertical drive device 15. The purpose is to prevent troubles (device failure, damage, wear, etc.) caused by the falling sand, cutting chips, and missing sprue. Further, although not shown in the figure, an air blow device capable of air blowing from a plurality of places with respect to the cast product 1 clamped by the clamp device 7 is provided at an appropriate position of the apparatus main body 7. Air blow is performed in accordance with the reversal of the product 1 around the horizontal axis P, so that the sand, chips, and missing gates remaining in the cast product 1 can be quickly removed.

The air cylinder 9 is composed of both rod cylinders, and detects the end of the air cylinder 9 in the direction opposite to the one in which the operating member 12 is connected in series to move the air cylinder 9 back and forth. A sensor 16 capable of detecting the situation is provided on the portion of the apparatus main body 7 located outside each of the pair of clamp portions 8 in the facing direction.

According to the reversing device H of this embodiment, the transfer device T causes the sand removing device S to move to the main body 7 of the device.
In a state where the cast product 1 is conveyed to the mounting portion 7a, the pair of air cylinders 9 are driven in the direction in which the cylinder rods approach each other, so that the holding member 11 is swung to move the cast product 1. It can be clamped, and in that state, the casting 1 is placed by the vertical drive device 15 on the mounting portion 7a.
From above, the rotary drive mechanism 6 is driven, and air blow is performed to swiftly remove the remaining sand, chips, and missing gates while rotating the casting 1 around the horizontal axis P, and a clamping device. 5, the rotary drive mechanism 6, the vertical drive device 15, the sensor 16 and the like can be removed in a state in which the main parts of the device are hard to sway.

[Other Embodiment] Another embodiment will be described below.

<1> The cast product is not limited to the cylinder head member described in the previous embodiment, but can be widely applied to all casters, and particularly to the cast product in which the sprue remains. Is effective when <2> The configuration of each part of the clamp device, the rotation drive mechanism, and the reversing device is not limited to the one described in the previous embodiment, and configurations with different structures and installation conditions are also possible. In short, it suffices if the main drive part of the reversing device is formed so that the falling sand, cutting chips, and missing gates from the cast product are difficult to contact. <3> The advance / retreat drive type actuator is not limited to the air cylinder described in the previous embodiment, and may be, for example, a hydraulic cylinder, an actuator driven by a linear motor, or a rotational force converted into a linear motion. It may have a rack and pinion mechanism for conversion. <4> The vertical drive device 15 is configured to move the clamp device / rotational drive mechanism up and down with respect to the mounting body in the above-described embodiment. It may be configured such that only the upper and lower parts are moved up and down, and by doing so, the device system can be configured compactly.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a front view showing a reversing device of an embodiment.

FIG. 2 is a side view showing the reversing device of the embodiment.

FIG. 3 is a cross-sectional view showing a main part of the reversing device of the embodiment.

FIG. 4 is a front view showing a reversing state of the reversing device of the embodiment.

FIG. 5 is a side view showing a carrying line according to the embodiment.

FIG. 6 is a side view of the transfer line showing the transfer status of the embodiment.

FIG. 7 is a side view of the transfer line showing the transfer status of the embodiment.

[Explanation of symbols]

 1 Cast Product 5 Clamping Device 6 Rotational Drive Mechanism 8 Clamping Section 9 Actuator 16 Sensor P Horizontal Shaft Core S Sand Removal Device Y Gate Cutting Device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eiji Yoshioka 1-47 Shikitsu Higashi 1-chome Naniwa-ku, Osaka City, Osaka Kubota Corporation (72) Inventor Yoshimasa Shiraishi 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Inside the automobile corporation

Claims (5)

[Claims] 1. From the sand removing device (S) of the cast product (1),
A casting product transport method for transporting the casting product (1) to the sprue cutting device (Y) of the casting product (1), wherein the casting product (1) sand-shrinked by the sand sander (S) is A method for conveying a cast product, which is conveyed through a reversing step of reversing the vertical posture. 2. The method of transporting a cast product according to claim 1, wherein air blowing is performed on the cast product (1) during the transport. 3. A casting product transport facility comprising a transport device (T) capable of transporting a cast product (1) from a sand removing device (S) to a gate cutting device (Y). ) In the middle of transportation by the casting product (1)
The clamp device (5) is provided with a clamp device (5) which is capable of holding, and a rotary drive mechanism (6) which is capable of reversing the cast product (1) held by the clamp device (5). In addition, a pair of clamp portions (8), which are capable of separately holding both sides of the cast product (1), are rotatable about a horizontal axis (P) along the facing direction and the rotation drive mechanism (6). ) Is provided so as to be synchronously rotatable around the horizontal axis (P), and a pair of withdrawal drives for freely driving the holding operation or the holding release of the casting (1) by the pair of clamp portions (8). Die actuators (9) are separately provided in series on the outer sides of the pair of clamp portions (8) in the facing direction, and the withdrawal state for driving the pair of withdrawal drive type actuators (9) is detected. A flexible sensor (16) with the pair of clamps Part (8) is a casting product transportation facility provided on the outer side in the facing direction. 4. The retractable drive type actuator (9)
Is a double rod cylinder, and the sensor (16)
The casting product transfer facility according to claim 3, wherein the outer ends of the rod cylinders are arranged so as to be detectable. 5. The cast product transfer according to claim 3 or 4, wherein the clamp part (8) is arranged such that a center of clamping with respect to the cast product (1) is aligned with the horizontal axis (P). Facility.