JP2007152365A - Method for transferring mold truck and device therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method where, even if inexpensive pneumatic cylinder and oil cushion-fitted pneumatic cylinder are used, a plurality of mold trucks arranged in series are intermittently moved at the pitch of one mold truck, and the plurality of mold trucks can be transferred to prescribed positions, respectively. <P>SOLUTION: In the method where a plurality of mold trucks arranged in series are intermittently moved at the pitch of one mold truck, and are transferred to prescribed positions, respectively, the plurality of mold trucks are pressed and moved by the extension operation of a pneumatic cylinder whose velocity is controlled, are further received by an oil cushion-fitted pneumatic cylinder, are moved by a distance slightly longer than the length of one mold truck and are passed through the respective prescribed positions of the mold trucks, and are thereafter retreated to the prescribed positions, respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a method and apparatus for transferring a plurality of mold trolleys to a predetermined position by moving a plurality of mold trolleys arranged in series intermittently at a pitch of one mold trolley.

An apparatus is known in which a plurality of mold trolleys on which a mold is placed are arranged in series, and the plurality of mold trolleys are sandwiched between a pneumatic cylinder and a cushion cylinder and intermittently transferred at a pitch of one mold trolley.
Japanese Utility Model Publication No. 62-46665 JP 2004-42073 A

By the way, in order to cast a thin high density casting at a high speed, when a plurality of mold trolleys on which a mold is placed are transferred using the apparatus described in the above Japanese Utility Model Publication No. 62-46665, gaps between the mold trolleys at the beginning of feeding are reduced. There has been a problem that the mold is broken, the core falls, the mold is misaligned on the mold carriage, etc. due to the closing and the impact when closing the clamp after completion of feeding.
For this reason, attempts have been made to transfer a plurality of mold trolleys using the apparatus described in Japanese Patent Application Laid-Open No. 2004-42073, but this method uses expensive electric cylinders and hydraulic proportional control valves. There were problems such as increased costs.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a plurality of mold carts arranged in series using an inexpensive pneumatic cylinder and a pneumatic cylinder with an oil cushion. An object of the present invention is to provide a method and apparatus capable of intermittently moving at a pitch of a mold carriage and transferring each of the plurality of mold carriages to a predetermined position.

In order to solve the above-mentioned problem, the method for transferring a mold carriage according to claim 1 is characterized in that a plurality of mold carriages arranged in series are intermittently moved at a pitch of one mold carriage, thereby the plurality of mold carriages. The plurality of mold trolleys are pushed by an extension operation of a pneumatic cylinder whose speed is controlled and received by a pneumatic cylinder with an oil cushion. The mold carriage is moved by a distance slightly longer than the length of one mold carriage so that each of the mold carriages passes through the predetermined position, and then each of the plurality of mold carriages is retracted to a predetermined position.

  According to a second aspect of the present invention, there is provided a transfer device for the mold carriage, wherein the plurality of mold carriages arranged in series are intermittently moved at a pitch of the one mold carriage so that each of the plurality of mold carriages is brought into a predetermined position. A device for transferring, wherein the plurality of mold trolleys are arranged and transferred in series, and the rails are arranged on the side of the mold trolley where the mold trolleys are loaded, and the plurality of mold trolleys extend in the direction in which the rails extend. A pneumatic cylinder to be pushed, a pneumatic cylinder with an oil cushion for receiving the plurality of molded carriages arranged on the rails on the unloading side of the mold carriage, and in the vicinity of the predetermined position on the rail. A return device with a pneumatic cylinder that returns a plurality of mold trolleys that have been disposed and moved from a predetermined position to a position a little longer to a predetermined position. And a weight-type stopper that passes through the plurality of mold trolleys pushed by the pneumatic cylinder and stops the mold trolley returned by the return device with the pneumatic cylinder at the predetermined position. It is characterized by that.

  In this configuration, the pneumatic cylinder whose speed is controlled is extended to push the plurality of mold trolleys and is received by the pneumatic cylinder with an oil cushion. Move a distance slightly longer than the length of the carriage, and then operate the pneumatic cylinder to contract and actuate the return device with the pneumatic cylinder to return the plurality of mold carriages and stop them with the weight-type stoppers. Position it.

As is apparent from the above description, in the first aspect, the plurality of mold trolleys arranged in series are intermittently moved at a pitch of one mold trolley so that each of the plurality of mold trolleys is brought into a predetermined position. A method of transferring, wherein the plurality of mold trolleys are pushed by a pneumatic cylinder whose speed is controlled and received by a pneumatic cylinder with an oil cushion, and the plurality of mold trolleys are received by one mold trolley. After moving each of the mold trolleys through the predetermined position by moving a distance slightly longer than the length of each of the plurality of mold trolleys, the plurality of mold trolleys are retracted to the predetermined positions. Even if a pressure cylinder is used, each of the plurality of mold trolleys arranged in series is spaced at the pitch of one mold trolley. To move, exhibits an excellent practical effect of such a plurality of the mold carriage can be transported to accurately in position.

The second aspect of the present invention is an apparatus for intermittently transferring a plurality of mold trolleys arranged in series at a pitch of one mold trolley, and transferring the plurality of mold trolleys arranged in series. A rail, a pneumatic cylinder disposed on a side of the mold carriage on the rail to push the plurality of mold carriages, and a rail disposed on the rail on the unloading side of the mold carriage. A pneumatic cylinder with an oil cushion that receives movement of the carriage, and a pneumatic cylinder that is disposed near the predetermined position on the rail and returns a plurality of molded carriages that have moved from the predetermined position to a position a little longer to the predetermined position. The return device and the plurality of mold carriages pushed by the pneumatic cylinder are passed, and the return device with the pneumatic cylinder is used. A weight type stopper for stopping the returned mold carriage at the predetermined position, so that a plurality of mold carriages arranged in series even if an inexpensive pneumatic cylinder and pneumatic cylinder with an oil cushion are used. Each of these is moved intermittently at a pitch of one mold carriage, and each of the plurality of mold carriages can be accurately transferred to a predetermined position.

One embodiment of a mold trolley transfer device to which the present invention is applied will be described in detail with reference to FIGS. As shown in FIG. 1, a mold carriage carrying traverser 2 is disposed at the left end of a rail 1 extending in the left-right direction, and a mold carriage carrying traverser 3 is disposed at the right end of the rail 1, respectively. It is. A pneumatic cylinder 4 as a pusher device is adjacent to the left side of the traverser 2 for carrying in the mold carriage, and a pneumatic cylinder 5 with an oil cushion as a cushioning apparatus is adjacent to the right side of the traverser 3 for carrying out the mold carriage. It is arranged. A plurality of mold trolleys 6 and 6 on which a mold is placed are placed in series on the rail 1, and a jacket transfer device 7 and a weight transfer device are placed above the intermediate position of the rail 1. Replacement devices 8 are arranged side by side. A groove 9 extending in the transfer direction is provided on the lower surface of the mold carriage 6 (see FIG. 2).

As shown in FIG. 1, a weight type stopper 10 for positioning the mold carriage 6 is disposed in the vicinity of the carry-in side of the jacket transfer device 7 downstream of the rail 1. 2, the support base 11 and a stopper 13 provided with a protrusion 12 that is pivotally supported on the support base 11 so as to be pivotable up and down at the upper right portion and can come into contact with the support base 11. It is. The stopper 13 has a claw 14 that can be engaged with the side surface of the groove 9 of the mold carriage 6 at the upper right end, and the lower half forms a weight part, and the claw 14 usually faces upward due to the gravity of the weight part. However, when the mold carriage 6 moves to the right, which is the traveling direction, the claw 14 tilts to the right and escapes, and when the mold carriage 6 moves backward in the traveling direction, 3, the claw 14 is engaged with the side surface of the groove 9 of the mold carriage 6, and the protrusion 12 is engaged with the support base 11 to prevent the mold carriage 6 from going backward and the mold carriage. 6 is positioned.

Further, as shown in FIG. 1, in the vicinity of the weight transfer device 8 downstream of the rail 1, there is a return device 15 with a pneumatic cylinder for returning the mold carriage 6 to the left opposite to the traveling direction. As shown in FIG. 2, the return device 15 with the pneumatic cylinder is provided with a horizontally-oriented cylinder 16 that is separately pivoted and pivotally supported so as to be vertically rotatable near the center. The lower end is pin-connected to the tip of the piston rod of the cylinder 16, and the upper end is constituted by an arm 18 screwed with a bolt 17 engageable with the side surface of the groove 9 of the mold carriage 6. As shown in FIG. 3, when the arm 18 is rotated counterclockwise by the extension operation of the cylinder 16, the head of the bolt 17 is engaged with the side surface of the groove 9 of the mold carriage 6. Thus, the mold carriage 6 can be returned to the left opposite to the traveling direction.

Further, as shown in FIG. 1, a return device 19 with a pneumatic cylinder having the same structure as the return device 15 with a pneumatic cylinder is separately provided in the vicinity of the mold truck carrying traverser 3 downstream of the rail 1. Then, as shown in FIG. 4, the mold carts 6 and 6 on the rail 1 and the mold cart are carried out by returning the mold carts 6 and 6 to the left opposite to the traveling direction. A gap can be provided between the traverser 3 and the mold carriage 6.

Further, as shown in FIG. 5, the pneumatic circuit 20 of the pneumatic cylinder 4 is provided with out-throttle speed controllers 21 and 21, and further the speed of extension operation of the pneumatic cylinder 4 (its piston rod). In-aperture speed controller 22 for controlling the expansion speed) is added. The head in the pneumatic cylinder 4 immediately after switching of the solenoid valve 23 is controlled by controlling the speed of the pneumatic cylinder 4 when the piston rod is extended by controlling the amount of compressed air supplied by the additional speed controller 22. The mold of the mold carriage carrying-in traverser 2 is prevented when the piston rod of the pneumatic cylinder 4 is prevented from popping out and the mold carriage 6 is pushed out, which is caused by the difference in thrust due to the area difference between the rod side and the rod side. The impact of the piston rod of the pneumatic cylinder 4 on the mold carriage 6 caused by the gap between the carriage 6 and the mold carriages 6 and 6 on the rail 1 can be reduced (see FIG. 6).

Further, as shown in FIG. 7, the pneumatic circuit 24 of the pneumatic cylinder 5 with an oil cushion is provided with an out-throttle speed controller 25/25 and an in-throttle speed controller 26/26. The speed control during the expansion and contraction operation of the piston rod of the pneumatic cylinder 5 can be easily performed.
Further, the piston rod 28 of the oil cushion can be returned by switching the center open three-position type electromagnetic valve 27 provided in the pneumatic circuit 24 and contracting the pneumatic cylinder 5. .

As shown in FIG. 8, in the pneumatic circuit 29 of the pneumatic cylinder return device 15, an out-throttle speed controller 31 is connected to a pipe 30 that supplies compressed air for contraction operation to the pneumatic cylinder 16. And a bypass circuit 34 in which a cut valve 32 and a high-speed speed controller 33 are provided in series are provided in parallel. When the mold carriage 6 is transferred in the direction opposite to the traveling direction, the cut valve 32 is provided. As a result, the displacement of the pneumatic cylinder 16 is increased and the arm 18 of the return device 15 with the pneumatic cylinder is rotated counterclockwise at a high speed so as to hit the side surface of the groove 9 of the mold carriage 6. By decelerating in front, the impact on the mold carriage 6 can be reduced (see FIG. 3).

  In order to transfer the plurality of mold carriages 6 and 6 loaded with the mold in the direction of the arrow from the state shown in FIG. 1, the speed controller 21 of the pneumatic circuit 20 as shown in FIG. The cylinder 4 whose speed is controlled by 22 is extended to push the plurality of mold carts 6 and 6 to the right and to be received by the pneumatic cylinder 5 with an oil cushion. The mold carriage 6 at the right end is moved to the mold carriage carrying traverser 3 by moving it to the right by a distance slightly longer than the length of the individual mold carriage 6. Next, the pneumatic cylinder 4 is contracted and the pneumatic cylinders 16 and 16 of the return devices 15 and 19 with pneumatic cylinders are extended to rotate the arms 18 and 18 counterclockwise, respectively. A plurality of mold trolleys 6, 6 positioned between the stopper 10 and the return device 15 with the pneumatic cylinder are stopped and positioned by the return weight stopper 10, and from the mold trolley 6 on the traverser 3 for transporting the mold trolley. Pull apart.

It is a front view of one Example of the mold trolley | bogie transfer apparatus which employ | adopted this invention. FIG. 2 is an enlarged detail view of a main part in FIG. 1. FIG. 3 is an operation explanatory diagram of FIG. 2. It is a partial operation explanatory view of FIG. 2 is a circuit diagram showing a pneumatic circuit of a pneumatic cylinder 4. FIG. It is a partial operation explanatory view of FIG. It is a circuit diagram which shows the pneumatic circuit of the pneumatic cylinder 5 with an oil cushion. It is a circuit diagram which shows the pneumatic circuit of the return apparatuses 15 and 19 with a pneumatic cylinder. It is a partial operation explanatory view of FIG.

Explanation of symbols

1 Rail 4 Pneumatic Cylinder 5 Pneumatic Cylinder with Oil Cushion 6 Molded Cart 15; 19 Return Device with Pneumatic Cylinder

Claims (5)

A plurality of mold trolleys arranged in series are intermittently moved at a pitch of one mold trolley to transfer each of the plurality of mold trolleys to a predetermined position,
The plurality of mold trolleys are pushed by a pneumatic cylinder whose speed is controlled and received by a pneumatic cylinder with an oil cushion, and the plurality of mold trolleys are slightly longer than the length of one mold trolley. A method for transferring a mold carriage, comprising: moving each mold carriage through the predetermined position, and then retracting each of the plurality of mold carriages to a predetermined position. A plurality of mold trolleys arranged in series are intermittently moved at a pitch of one mold trolley to transfer each of the plurality of mold trolleys to a predetermined position,
A rail for transferring the plurality of mold trolleys arranged in series; and
A pneumatic cylinder that is disposed on the carry-in side of the mold carriage in the rail and pushes the plurality of mold carriages in a direction in which the rail extends;
A pneumatic cylinder with an oil cushion for receiving the plurality of mold trolleys arranged and pushed on the unloading side of the mold trolley in the rail;
A return device with a pneumatic cylinder for returning to a predetermined position a plurality of mold trolleys arranged near the predetermined position on the rail and moved from a predetermined position to a slightly longer distance;
A weight-type stopper that passes through the plurality of mold trolleys pushed by the pneumatic cylinder and stops the mold trolley returned by the return device with the pneumatic cylinder at the predetermined position;
An apparatus for transferring a mold carriage, comprising: In the transfer apparatus of the mold trolley | bogie of Claim 2,
A transfer apparatus for a mold carriage, wherein an in-draw type speed controller for controlling an extension speed of a piston rod of the pneumatic cylinder is provided in the pneumatic circuit of the pneumatic cylinder. In the transfer apparatus of the mold trolley | bogie of Claim 2 or 3,
A transfer device for a mold carriage, wherein a center-open three-position solenoid valve is provided in a pneumatic circuit of the pneumatic cylinder with an oil cushion. In the transfer apparatus of the mold trolley of any one of Claims 2-4,
In order to increase the speed of the piston rod of the pneumatic cylinder that operates to retract the mold carriage to a predetermined position in the pneumatic circuit of the pneumatic cylinder of the return device with the pneumatic cylinder, the exhaust from the pneumatic cylinder A mold trolley transfer apparatus comprising a bypass circuit for increasing the amount.