JP6861120B2 - Lubricant supply equipment, die casting equipment and die casting system - Google Patents

Description

The present invention relates to a lubricant supply device, a die casting device and a die casting system, and more particularly to a lubricant supply device, a die casting device and a die casting system for supplying a solid lubricant to a pouring port of a sleeve before pouring.

Conventionally, a die casting device for supplying a solid lubricant to a pouring port of a sleeve before pouring is known (see, for example, Patent Document 1).

Patent Document 1 discloses a die casting device including a bead dispenser (lubricant supply device), a water pouring machine, and a die casting machine including a sleeve having a pouring port. The bead dispenser is provided with a bead discharge part (lubricant supply part) for discharging beads (solid lubricant), and the bead discharge part is placed in a forward position above the pouring port and retracted away from above the pouring port. It is configured so that it can be moved back and forth to and from the position. The bead discharge unit is configured to supply the beads to the pouring port at the forward position. The water pouring machine is provided with a ladle, and is configured so that the ladle can be moved to a pumping position for pumping the molten metal from the melting furnace and a pouring position located above the pouring port.

The ladle located at the pouring position is arranged above the bead discharge portion and at intervals near the bead discharge portion so as not to interfere with the bead discharge portion located at the forward position. Further, the water pouring machine is positioned (standby) at the pouring position (standby) when the bead discharge part discharges the beads at the forward position, and after the beads are discharged from the bead discharge part, the bead discharge part retreats to the retracted position. It is configured to pour hot water based on what has been done.

Utility Model Registration No. 3193143

However, in the die casting device of Patent Document 1, when the beads are supplied by the bead dispenser (lubricant supply device), the ladle that has drawn the molten metal is positioned (standby) at the pouring position near the advancing position where the bead dispenser is located. Therefore, there is a problem that the beads are softened by the heat of the ladle (molten metal) in the bead discharge portion, and the bead discharge portion is easily clogged. On the other hand, if the ladle is moved from the pumping position to the pouring position after the bead ejection part reaches the retracted position after the bead is supplied, it takes too much time from the bead supply to the pouring, and the cycle time becomes long. Production efficiency will drop.

The present invention has been made to solve the above-mentioned problems, and one object of the present invention is to suppress clogging of a lubricant supply device by a solid lubricant while shortening a cycle time. It is to provide a possible lubricant supply device, die casting device and die casting system.

In order to achieve the above object, the lubricant supply device according to the first invention includes a discharge port for solid lubricant, and is a lubricant that supplies solid lubricant to the pouring port of the injection sleeve before pouring by the pouring device. The lubricant supply unit is located at the forward position where the supply port and the discharge port are arranged above the pouring port and discharge the solid lubricant from the discharge port, and the retreat position where the discharge port is arranged so as to deviate from the upper part of the pouring port. The supply unit drive unit is provided with a supply unit drive unit that moves the solid lubricant back and forth, and a supply device side control unit that controls the supply of solid lubricant to the pouring port and the drive of the supply unit drive unit. Control to supply solid lubricant to the pouring port while the pouring device is stopped at the standby position located between the pumping position where the molten metal is pumped by the device and the pouring position where the pouring is performed by the pouring device. At the same time, it is configured to control the supply unit drive unit so as to start retreating from the forward position to the backward position of the lubricant supply unit.

As described above, this lubricant supply device solid-lubricates the supply device side control unit to the pouring port during the period when the pouring device is stopped at the standby position located between the pumping position and the pouring position. It is configured to control the supply unit and to control the supply unit drive unit so as to start retreating from the forward position to the retreat position of the lubricant supply unit while controlling the supply of the agent. As a result, the solid lubricant is supplied by the lubricant supply unit to the lubricant supply unit during the period when the water injection device is stopped (standby) at the standby position, which is a position away from the pouring position on the pumping position side. It can be retreated. For this reason, when the solid lubricant is supplied by the lubricant supply device as in the conventional case, the solid lubricant is supplied as compared with the case where the pouring device (raddle) that has drawn the molten metal is located at the pouring position. In addition, it is possible to prevent the solid lubricant in the lubricant supply unit from being exposed to a high temperature by the molten metal pumped by the hot water pouring device. As a result, it is possible to suppress the softening of the solid lubricant, so that clogging of the lubricant supply portion due to the solid lubricant can be suppressed. In addition, the lubricant supply device does not move the molten metal from the pumping position to the pouring position by pumping the molten metal after supplying the solid lubricant, but instead of moving the pouring device from the pumping position to the pouring position, the pouring device is preliminarily moved from the pumping position when the solid lubricant is supplied. Since it can be made to stand by at a standby position close to the pouring position, the cycle time can be shortened. As described above, it is possible to suppress clogging of the lubricant supply unit (lubricant supply device) due to the solid lubricant while shortening the cycle time.

In the above-mentioned lubricant supply device, preferably, the supply device side control unit starts moving the lubricant supply unit from the retracted position to the forward position after the hot water pouring device starts moving from the pumping position to the standby position. It is configured to control the supply unit drive unit so as to do so. With this configuration, since the molten metal is pumped up, the pouring device, which is operated at a lower speed than the lubricant supply device, can be moved toward the pouring port before the lubricant supply device, so that it is solid. The pouring device can be reached to the pouring position at an early stage after the lubricant is supplied.

In this case, preferably, the supply device side control unit advances from the retracted position of the lubricant supply unit based on the fact that the water pouring device starts moving from the pumping position to the standby position and then reaches the standby position. It is configured to control the supply drive to start advancing to position. With this configuration, the lubricant supply unit can be started to move forward when the pouring device reaches the standby position where the pouring device is stopped. Therefore, the pouring device is reliably stopped. The lubricant supply unit can be advanced. It is possible to prevent the molten metal from being applied to the lubricant supply unit due to the liquid level fluctuation of the molten metal caused by the movement of the hot water pouring device.

In the above-mentioned lubricant supply device, preferably, the supply device side control unit sets the supply unit drive unit so that the lubricant supply unit retracts to the retracted position while the hot water pouring device is stopped at the standby position. It is configured to control. With this configuration, the lubricant supply unit can be started to move to the pouring position while the lubricant supply unit is reliably retracted, so that the lubricant supply unit is in the middle of the retreating position from the forward position. It is possible to prevent the hot water injection device from colliding with the lubricant supply unit even when the device is stopped at.

In the above-mentioned lubricant supply device, preferably, the lubricant supply unit is arranged so as to face the hot water injection device with the injection sleeve sandwiched between them, and the tip portion provided with the discharge port of the lubricant supply unit reaches the forward position. In this case, the tip is configured to be positioned so that it collides with the ruddle of the hot water pouring device, and the control unit on the supply device side is in the standby position during the period when the hot water pouring device is stopped. By supplying the solid lubricant and initiating the retreat of the lubricant supply unit to the retracted position, it is configured to control the tip of the lubricant supply unit from colliding with the ruddle. With this configuration, as in the conventional case, in order to avoid collision (interference) between the ruddle of the pouring device and the lubricant supply section, the ruddle is placed above the lubricant supply section and the lubricant is supplied. Compared with the case where the parts are arranged at intervals in the vicinity of the part, the ladle can be arranged near the pouring port in the height direction, so that it is possible to prevent the molten metal from leaking from the pouring port at the time of pouring. it can.

In the above-mentioned lubricant supply device, preferably, a backward position sensor that detects that the lubricant supply unit is located in the backward position and a forward position sensor that detects that the lubricant supply unit is located in the forward position are provided. Further prepare. With this configuration, the retreat position sensor can reliably detect that the lubricant supply unit has reached the retreat position. Therefore, by moving the lubricant supply unit toward the pouring position after retreating, the lubricant supply unit can be moved toward the pouring position. It is possible to avoid a collision between the lubricant supply unit and the hot water pouring device. Further, since the forward position sensor can reliably detect that the lubricant supply unit has reached the forward position, the timing at which the solid lubricant is supplied by the lubricant supply unit can be appropriately determined. As a result, it is possible to prevent the solid lubricant from leaking from the pouring port.

In the above-mentioned lubricant supply device, preferably, the supply device side control unit supplies the solid lubricant to the standby position, which is closer to the pouring position than the pumping position, while the pouring device is stopped. , It is configured to control the start of retreat of the lubricant supply unit to the retreat position. With this configuration, the pouring device can be kept on standby at a position closer to the pouring position than in the case where the standby position is closer to the pumping position than the pouring position. The pouring device can reach the pouring position at an early stage after the start of movement from the standby position of the device to the pouring position. Therefore, it is possible to suppress a decrease in the temperature of the molten metal.

The die casting device according to the second invention is a die casting device for pouring hot water into a pouring port of an injection sleeve after the solid lubricant is supplied by the lubricant supply device, and includes an injection sleeve having a pouring port, and a mold is attached to the die casting device. The die casting machine to be used, the ruddle that pumps the molten metal from the melting furnace, the pumping position where the ruddle pumps the molten metal from the melting furnace, the pouring position where the ruddle is placed above the pouring port, and the pumping position and the pouring position. A hot water pouring device including a ruddle drive unit for moving the ruddle and a die-cast side control unit for controlling the drive of the ruddle drive unit are provided at a standby position located between the die-cast side control unit, and the die-cast side control unit is a lubricant supply device. The period until the solid lubricant is supplied to the pouring port and the lubricant supply device starts retreating from the forward position located above the pouring port to the retreating position located deviating from the upper part of the pouring port. , It is configured to control the ruddle drive unit so as to stop the ruddle in the standby position.

In this die casting device, as described above, the die casting side control unit is injected from the forward position where the solid lubricant is supplied to the pouring port by the lubricant supply device and the lubricant supply device is arranged above the pouring port. The ruddle drive unit is controlled so as to stop the ruddle at a standby position located between the pumping position and the pouring position until the retreat to the retreating position arranged deviating from the upper part of the sprue is started. Configure. As a result, the solid lubricant is supplied by the lubricant supply device to the lubricant supply device during the period when the hot water injection device is stopped (standby) at the standby position, which is a position away from the pouring position on the pumping position side. It can be retreated. For this reason, when the solid lubricant is supplied by the lubricant supply device as in the conventional case, the solid lubricant is supplied as compared with the case where the pouring device (raddle) that has drawn the molten metal is located at the pouring position. In addition, it is possible to prevent the solid lubricant in the lubricant supply device from being exposed to a high temperature by the molten metal pumped by the hot water pouring device. As a result, it is possible to suppress the softening of the solid lubricant, so that clogging of the lubricant supply device by the solid lubricant can be suppressed. In addition, the lubricant supply device does not move the molten metal from the pumping position to the pouring position by pumping the molten metal after supplying the solid lubricant, but instead of moving the pouring device from the pumping position to the pouring position, the pouring device is preliminarily moved from the pumping position when the solid lubricant is supplied. Since it can be made to stand by at a standby position close to the pouring position, the cycle time can be shortened. As described above, it is possible to provide a die casting device capable of suppressing clogging of the lubricant supply device due to the solid lubricant while shortening the cycle time.

In the above die casting device, preferably, the die casting side control unit starts moving from the standby position of the ruddle to the pouring position after the lubricant supply device starts retreating from the forward position to the backward position. It is configured to control the ruddle drive unit. With this configuration, the lubricant supply device located above the pouring port can be moved (backward) before the pouring device, so it moves toward the pouring position above the pouring port. It is possible to prevent the hot water device (raddle) from colliding with the lubricant supply device. Further, since it is possible to prevent the hot water pouring device (raddle) from approaching the lubricant supply device, it is possible to prevent the solid lubricant in the lubricant supply device from being heated. As a result, clogging of the lubricant supply device due to the solid lubricant can be effectively suppressed.

In this case, preferably, the die casting side control unit moves from the standby position of the ruddle to the pouring position based on the fact that the lubricant supply device starts retreating from the forward position to the retreat position and then reaches the retreat position. It is configured to control the ruddle drive so that it starts moving. With this configuration, the lubricant supply device and the hot water pouring device can be started to move to the pouring position in a state where the lubricant supply device is reliably retracted from above the pouring port. Collision with the device can be reliably prevented.

In the above-mentioned die casting device, the standby position is preferably a position closer to the pouring position than the pumping position. With this configuration, the pouring device can be kept on standby at a position closer to the pouring position than in the case where the standby position is closer to the pumping position than the pouring position. The pouring device can reach the pouring position at an early stage after the start of movement from the standby position of the device to the pouring position. Therefore, it is possible to suppress a decrease in the temperature of the molten metal.

The die-cast molding system according to the third invention includes an injection sleeve having a pouring port, has a die-cast molding machine to which a mold is attached, and a solid lubricant discharge port, and supplies solid lubricant to the pouring port. Lubricant supply to the agent supply unit, the forward position where the discharge port is arranged above the pouring port and the solid lubricant is discharged from the discharge port, and the backward position where the discharge port is arranged so as to deviate from the upper part of the pouring port. A lubricant supply device that includes a supply unit drive unit that moves the unit forward and backward, a ruddle that draws molten metal from the melting furnace, a pumping position where the ruddle draws molten metal from the melting furnace, and a pouring position where the radle is located above the pouring port. A pouring device that includes a ruddle drive unit that moves the ruddle forward and backward in a standby position between the pumping position and the pouring position, and pours hot water into the pouring port after the solid lubricant is supplied by the lubricant supply device. And a control means provided in the diecast molding machine to control the lubricant supply device and the hot water pouring device, the control means moves the ruddle from the pumping position to the standby position and stops the ruddle in the standby position. While controlling the ruddle drive unit and stopping the ruddle at the standby position, the lubricant supply device supplies solid lubricant to the pouring port to move the lubricant supply unit backward from the forward position to the backward position. It is configured to control the supply unit drive unit to control the start.

As described above, this die casting system moves the control means from the pumping position to the standby position between the pumping position and the pouring position, and stops the ruddle in the standby position. While the ruddle is stopped at the standby position, the lubricant supply device supplies solid lubricant to the pouring port and starts retreating from the forward position to the retreat position of the lubricant supply unit. It is configured to control the supply unit drive unit as it does. As a result, the solid lubricant is supplied by the lubricant supply unit to the lubricant supply unit during the period when the water injection device is stopped (standby) at the standby position, which is a position away from the pouring position on the pumping position side. It can be retreated. For this reason, when the solid lubricant is supplied by the lubricant supply device as in the conventional case, the solid lubricant is supplied as compared with the case where the pouring device (raddle) that has drawn the molten metal is located at the pouring position. In addition, it is possible to prevent the solid lubricant in the lubricant supply unit from being exposed to a high temperature by the molten metal pumped by the hot water pouring device. As a result, it is possible to suppress the softening of the solid lubricant, so that clogging of the lubricant supply portion due to the solid lubricant can be suppressed. In addition, the lubricant supply device does not move the molten metal from the pumping position to the pouring position by pumping the molten metal after supplying the solid lubricant, but instead of moving the pouring device from the pumping position to the pouring position, the pouring device is preliminarily moved from the pumping position when the solid lubricant is supplied. Since it can be made to stand by at a standby position close to the pouring position, the cycle time can be shortened. As described above, it is possible to provide a die casting system capable of suppressing clogging of the lubricant supply unit (lubricant supply device) due to the solid lubricant while shortening the cycle time.

According to the present invention, as described above, it is possible to provide a lubricant supply device, a die casting device and a die casting system capable of suppressing clogging of the lubricant supply device due to solid lubricant while shortening the cycle time. Can be done.

It is a schematic side view which showed the whole structure of the die casting molding system by one Embodiment. It is a schematic side view which showed the pouring device located at the pumping position and the pellet feeding device located at the retracted position of the die casting molding system according to one embodiment. It is a schematic side view which showed the pouring device located in the standby position and the pellet supply device before pellet supply located in the retracted position of the die casting molding system according to one embodiment. It is a schematic side view which showed the pouring device located in the standby position and the pellet supply device located in the forward position of the die casting molding system according to one embodiment. It is a schematic side view which showed the pouring device located in the standby position and the pellet supply device after pellet supply located in the retracted position of the die casting molding system according to one embodiment. It is a schematic side view which showed the pouring device located at the pouring position and the pellet supply device located at the retreating position of the die casting molding system according to one embodiment. It is a partially enlarged view which showed the tip part of the pellet supply part of the die casting molding system by one Embodiment. It is a figure which showed the pellet supply apparatus of the die casting molding system by one Embodiment. It is a block diagram which showed the whole structure of the die casting molding system by one Embodiment. It is a figure for demonstrating the timing of movement of the pouring apparatus and the pellet supply part apparatus of the die casting molding system by one Embodiment. It is a flowchart for demonstrating the process for pouring and pellet supply by the main control part of the die casting molding system by one Embodiment. It is a flowchart for demonstrating the process for pouring hot water and supplying pellets by the control part of the die casting molding system by one Embodiment.

Hereinafter, embodiments embodying the present invention will be described with reference to the drawings.

With reference to FIGS. 1 to 12, the configuration of the die casting system 100 according to one embodiment and the die casting device 100a and the pellet supply device 100b, which are one configuration of the die casting system 100, will be described. The pellet supply device 100b is an example of a "lubricant supply device" within the scope of the claims.

In the following description, the moving direction of the plunger 22 is the X direction, the direction orthogonal to the X direction in the horizontal plane is the Y direction, and the vertical direction is the Z direction.

(Die casting molding system)
The die casting system 100 according to the present embodiment shown in FIG. 1 includes a die casting device 100a and a pellet supply device 100b. The die casting device 100a includes a die casting machine 100c and a hot water pouring device 100d.

The die casting system 100 is configured such that the pellet L is supplied into the injection sleeve 21 provided in the die casting machine 100c by the pellet supply device 100b, and then the pellet L is poured into the injection sleeve 21 by the hot water pouring device 100d. ing. The pellet L and the molten metal are supplied and poured by dropping the pellet L and the molten metal from above the injection sleeve 21 (pouring port 21a), respectively.

Further, in the die casting molding system 100, the molten metal poured into the injection sleeve 21 is injected into the mold M attached to the die casting molding machine 100c by the plunger 22 provided in the die casting molding machine 100c, and the molded product (molded product ( It is configured to mold die-cast products). The pellet L is an example of a "solid lubricant" in the claims.

Both the pellet supply device 100b and the hot water pouring device 100d are arranged on the X2 direction side of the die casting machine 100c (fixed die plate 11 described later). Further, the pellet supply device 100b is arranged on the Y1 direction side of the injection sleeve 21. The hot water pouring device 100d is arranged on the Y2 direction side of the injection sleeve 21.

For convenience of explanation, in FIG. 1, the pellet supply device 100b and the hot water pouring device 100d are shown so as to be arranged in the X direction, but in reality, as shown in FIG. 2, the pellet supply device 100b and the hot water pouring device 100d are arranged. Are generally arranged so as to line up in the Y direction.

As shown in FIG. 2, the die casting molding system 100 is configured to supply the pellet L by the pellet supply device 100b and the hot water by the hot water pouring device 100d through the pouring port 21a of the injection sleeve 21. There is. Therefore, in the die casting system 100, the pellet L is supplied by the pellet supply device 100b above the pouring port 21a so that the pellet supply device 100b and the hot water pouring device 100d do not collide with each other, and the pellet supply device 100b The pouring device 100d is configured to stop (stand by) at a standby position deviated from above the pouring port 21a until it retracts. Details will be described later.

2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6 are diagrams showing a first arrangement state, a second arrangement state, a third arrangement state, a fourth arrangement state, and a fifth arrangement state, respectively. The first to fifth arrangement states indicate the arrangement states in the middle of the die casting device 100a and the pellet supply device 100b that move in the molding cycle in the order of movement.

Here, in order to facilitate understanding of each configuration of the die casting molding system 100 described later, first, the molding cycle (molding process) by the die casting molding system 100 will be briefly described.

As shown in FIG. 1, the molding cycle is assumed to start from the mold opening of the mold M. First, in the molding cycle, air is blown onto the molding surface of the mold M in the opened mold state by an air blow device (not shown) to remove burrs adhering to the mold M. Next, the mold release agent is applied to the inner surface including the molding surface of the mold M by a mold release agent supply device (not shown). Next, the mold M is molded by the die casting machine 100c.

Next, as shown in FIG. 2, the molten metal is pumped from the melting furnace F by the radle 31 of the pouring device 100d located at the pumping position. The pumping of the molten metal may be started before the mold M is clamped. Next, the radle 31 is moved from the pumping position to the standby position. Next, the pellet supply device 100b (pellet supply unit 41 described later) advances from the retracted position to the forward position, discharges the pellet L from the discharge port 41b of the pellet supply device 100b, and discharges the pellet L from the pouring port 21a into the injection sleeve 21. Is supplied with pellet L. Next, the pellet supply device 100b (pellet supply unit 41) retracts from the forward position to the backward position. Next, the radle 31 of the hot water pouring device 100d moves from the standby position to the hot water pouring position. Then, the hot water pouring device 100d pours hot water.

Here, the pumping position is the position of the radle 31 of the pouring device 100d when the molten metal is pumped from the melting furnace F. The ladle 31 located at the pumping position is arranged so as to deviate from above the pouring port 21a of the injection sleeve 21. The fact that the radle 31 deviates from above the pouring port 21a of the injection sleeve 21 means that the ruddle 31 vertically overlaps the pouring port 21a of the injection sleeve 21 from the position where the ruddle 31 overlaps the pouring port 21a of the injection sleeve 21 in the vertical direction. It means moving to a position (side of the injection sleeve 21) that does not overlap with.

The pouring position is the position of the ladle 31 when pouring hot water into the injection sleeve 21 by the ladle 31. The radle 31 located at the pouring position is arranged above (immediately above) the pouring port 21a.

The standby position is a position between the pumping position and the pouring position in the Y direction, and when the pellet supply device 100b supplies the pellet L, the pellet supply device 100b (pellet supply unit 41) and the pouring device 100d This is a position where the radle 31 is temporarily made to stand by in front of the pouring port 21a so as not to collide with the (raddle 31). The radle 31 located at the standby position and the ladle 31 located at the pouring position are arranged at substantially the same height as each other.

The pumping position, standby position, and pouring position are arranged in substantially the same straight line in the horizontal direction. In addition, the standby position is a position closer to the pouring position than the pumping position. That is, the standby position is a position closer to the pouring position than the intermediate position between the pumping position and the pouring position. As a specific example, when the distance D1 between the standby position and the pouring position is 300 mm, the distance D2 between the drawing position and the pouring position is set to 1000 mm. That is, although it is an example, the distance D1 between the standby position and the pouring position is set to about one-third of the distance D2 between the pumping position and the pouring position. Further, in the standby position, the pellet supply unit 41 in the forward position and the radle 31 do not interfere (collision), and the hot water is poured to an allowable limit in consideration of the influence of the heat of the ruddle 31 on the pellet supply unit 41 in the forward position. It can be closer to the position, in which case the distance D1 may be less than or equal to one-third of the distance D2.

The forward position is located on the Y2 direction side of the backward position. The forward position is the position of the pellet supply unit 41 when the pellet L is supplied from the discharge port 41b of the pellet supply unit 41 described later in the pellet supply device 100b. The pellet supply unit 41 located at the forward position is arranged above the pouring port 21a of the injection sleeve 21.

On the other hand, the retracted position is a position where the pellet supply unit 41 is arranged in the period before and after the supply of the pellet L (the period before and after the pellet supply unit 41 is located in the forward position). That is, the retracted position is a position where the pellet supply unit 41 is arranged except during the supply period of the pellet L, and is a position where the pellet supply device 100b is retracted at the time of pouring so as not to collide with the pouring device 100d. Is. The pellet supply device 100b located at the retracted position is arranged so as to deviate from above the pouring port 21a of the injection sleeve 21.

(Structure of die casting machine)
The die casting machine 100c according to the present embodiment shown in FIG. 1 is a cold chamber type molding machine. The die casting machine 100c includes a fixed die plate 11, a moving die plate 12, a plurality of tie bars 13 extending in parallel with each other, a die plate drive mechanism 14, an injection device 15, and a main control unit 16. The main control unit 16 is an example of the "die-cast side control unit" in the claims.

A fixed mold M1 on the fixed side is attached to the fixed die plate 11. Further, a moving mold M2 on the moving side is attached to the moving die plate 12. The die plate drive mechanism 14 is configured to reciprocate the moving die plate 12 in the horizontal direction (X direction) along the tie bar 13. When the moving mold M2 is brought close to the fixed mold M1 by the die plate drive mechanism 14 and the mold is fastened, a molded product is formed between the inner surface of the fixed mold M1 and the inner surface of the moving mold M2. A cavity (cavity portion) M3 is formed. Further, the cavity M3 communicates with the injection sleeve 21 via a runner M4 which is a circulation passage for the molten metal (molten metal).

The injection device 15 includes an injection sleeve 21, a plunger 22, and a drive unit 23 that moves the plunger 22 in the X1 direction. Here, the drive unit 23 is, for example, a hydraulic cylinder driven by a hydraulic circuit 23a. The injection sleeve 21 has a thick cylindrical shape extending in the X direction. The end of the injection sleeve 21 in the X1 direction is fixed to the fixed die plate 11 in a state of being abutted against the fixing mold M1.

The injection sleeve 21 is configured to heat and vaporize (melt) the supplied pellet L. Further, the injection sleeve 21 is configured to obtain slidability with the plunger tip 22b by adhering the vaporized pellet L to the inner peripheral surface. Further, a pouring port 21a is formed on a part of the upper surface (Z1 side) of the injection sleeve 21. Further, a plunger 22 is inserted into the X2 direction end (free end) of the injection sleeve 21 by fitting.

The plunger 22 includes a straight rod-shaped plunger rod 22a extending in the X direction and a plunger tip 22b attached to an end portion of the plunger rod 22a on the X1 direction side. An injection device 15 is connected to the end of the plunger rod 22a in the X2 direction. The outer peripheral surface of the plunger tip 22b is fitted to the inner peripheral surface of the injection sleeve 21.

Further, the plunger tip 22b is configured to be slidably moved in the X1 direction by the injection device 15 via the plunger rod 22a. Then, the injection device 15 is configured to inject the molten metal into the molded mold M (cavity M3) through the runner M4 by moving the plunger tip 22b in the X1 direction.

The main control unit 16 is configured to control the operation of each unit of the die casting machine 100c. Specifically, the main control unit 16 is configured to control the mold M to be molded and opened by driving the die plate drive mechanism 14. Further, the main control unit 16 is configured to control the plunger 22 to be moved in the X1 direction by the injection device 15 to inject the molten metal into the mold M (cavity M3).

The main control unit 16 is composed of at least a computer including a CPU and a memory. Further, the main control unit 16 is configured to control the drive of the hot water pouring device 100d.

Specifically, as shown in FIG. 3, the main control unit 16 is configured to control the molten metal to be pumped from the melting furnace F at the pumping position by the hot water pouring device 100d (raddle 31). Further, the main control unit 16 is configured to control the pouring device 100d (raddle 31) to be moved from the pumping position of the molten metal to the standby position.

Further, the main control unit 16 sends a predetermined signal (standby position signal Q1) indicating that the hot water pouring device 100d has reached the standby position to the pellet supply device 100b (control unit 47 described later) of the pellet supply device 100b. It is configured to transmit to the control unit 47 described later. The control unit 47 is an example of the “supply device side control unit” in the claims. Further, the configuration in which the main control unit 16 and the control unit 47 are combined is an example of the "control means" in the claims.

Further, the main control unit 16 is configured to stop (standby) the hot water pouring device 100d at the standby position when the hot water pouring device 100d reaches the standby position.

As shown in FIG. 4, the pellet supply device 100b is configured to advance the pellet supply unit 41 to supply the pellet L to the injection sleeve 21 based on the standby position signal Q1.

As shown in FIG. 5, the main control unit 16 reaches the retreating position after the pellet supply device 100b starts retreating from the advancing position to the retreating position. It is configured to control the motor 32a, which will be described later, so as to start moving to. The motor 32a is an example of the "raddle drive unit" in the claims.

Specifically, as shown in FIG. 6, the main control unit 16 outputs a predetermined signal (backward position signal Q2) indicating that the pellet supply device 100b has retreated from the forward position to the backward position by the pellet supply device 100b (control). When received from the unit 47), the motor 32a is configured to control the pouring device 100d (raddle 31) to move from the standby position to the pouring position. That is, the retreat position signal Q2 is a trigger signal that starts the movement of the pouring device 100d from the standby position to the pouring position.

As described above, when the radle 31 reaches the standby position, the main control unit 16 transmits the standby position signal Q1 to the pellet supply device 100b and waits until the pellet supply device 100b receives the backward position signal Q2. , Ladle 31 is put on standby. That is, in the main control unit 16, the pellet L is supplied to the pouring port 21a by the pellet supply device 100b, and the pellet supply device 100b deviates from the forward position where the pellet supply device 100b is arranged above the pouring port 21a from above the pouring port 21a. It is configured to control the motor 32a so as to stop the ruddle 31 in the standby position during the period until the retreat to the arranged retreat position is started.

(Configuration of hot water pouring device)
As shown in FIG. 2, the pouring device 100d is configured to draw the molten metal from the melting furnace F, supply the pellets L by the pellet supply device 100b, and then pour the molten metal into the pouring port 21a of the injection sleeve 21. Further, the hot water pouring device 100d and the melting furnace F are provided on the Y2 direction side of the injection sleeve 21. Therefore, the pumping position is the position on the Y2 direction side of the pouring position. Further, the pouring device 100d is configured to be driven under the control of the main control unit 16 of the die casting machine 100c.

The hot water pouring device 100d includes a radle 31, an arm portion 32, and a hot water pouring device main body 33.

<Structure of Raddle>
The radle 31 is a member for pumping the molten metal and has a cassotte shape. Further, the ruddle 31 is provided with a shaft member 31a, a motor 31b, and an encoder 31c. The ruddle 31 is attached to the arm portion 32 via the shaft member 31a. Further, the ruddle 31 is configured to be tiltable by rotating around the shaft member 31a.

The motor 31b is configured to rotate (tilt) the ruddle 31 with respect to the shaft member 31a. Then, the motor 31b is configured to draw the molten metal by the radle 31 and pour the molten metal by changing the inclination angle of the radle 31. The motor 31b is arranged in the hot water pouring device main body 33, and is connected to the shaft member 31a so that the ruddle 31 can rotate via a power transmission member (not shown) such as a chain belt.

The encoder 31c is configured to detect the driving amount of the motor 31b and the like. The main control unit 16 can grasp the tilt angle of the ruddle 31 by acquiring the detected value of the encoder 31c. The die casting machine 100c (main control unit 16) is configured to control the drive of the motor 31b based on the detection value of the encoder 31c to adjust the tilt angle of the ruddle 31. The radle 31 is held substantially horizontally so that the molten metal does not leak except when the molten metal is pumped and poured.

<Structure of arm part>
The arm portion 32 has a plurality of joint portions. A hot water pouring device main body 33 is connected to one end of the arm portion 32. A radle 31 is attached to the other end of the arm portion 32 via a shaft member 31a. Further, the arm portion 32 is provided with a motor 32a and an encoder 32b. The motor 32a is configured to move the radle 31 between the pumping position and the pouring position.

Specifically, the motor 32a (main control unit 16) is configured to move the radle 31 to the pumping position, the standby position, and the pouring position in this order in the pouring operation until the molten metal is pumped and poured. Has been done. The motor 32a is arranged in the hot water pouring device main body 33, and is configured to drive the arm portion 32 via a power transmission member (not shown) such as a chain belt. After pouring, the motor 32a (main control unit 16) is configured to move the radle 31 from the pouring position to the pumping position by the arm unit 32.

The encoder 32b is configured to detect the driving amount of the motor 32a and the like. The main control unit 16 is configured to be able to grasp the movement amount and the movement speed of the arm unit 32 by acquiring the detection value of the encoder 32b. The die casting machine 100c (main control unit 16) is configured to control the drive of the motor 32a based on the detection value of the encoder 32b to adjust the movement amount and the movement speed of the arm unit 32. ..

The hot water pouring device 100d is configured such that the position of the arm portion 32 (raddle 31) is grasped by the encoder 32b and the hot water is poured at the pouring position so that the molten metal is not spilled from the pouring port 21a. Further, the arm portion 32 is configured to hold the radle 31 at substantially the same height position from the standby position to the pouring position.

(Configuration of pellet supply device)
As shown in FIG. 2, the pellet supply device 100b is processed into pellets (particles) in advance for each molding cycle for lubrication between the inner peripheral surface of the injection sleeve 21 and the outer peripheral surface of the plunger tip 22b. The pellet L is configured to be supplied into the injection sleeve 21. Here, examples of the pellet L include granulated mixture of wax and graphite. It should be noted that the pellet L is a mold release agent that is previously adhered to the inner surface of the mold M when prompting the mold release of the die casting product from the mold M (see FIG. 1) after injecting the molten metal in addition to the lubricating component. Also included are multifunctional composite pellets containing the above components. Further, as an example, the pellet L has a particle size of about 1 mm. As an example, the melting temperature of the pellet L is about 100 ° C. The temperature of the radle 31 including the molten metal is about 300 ° C.

The pellet supply device 100b includes a pellet supply unit 41, an air supply source 42, a pellet measurement unit 43, an advance / retreat cylinder 44, a forward limit switch 45, a reverse limit switch 46, and a control unit 47. ing. The advancing / retreating cylinder 44 is an example of a "supply unit driving unit" within the scope of the claims. Further, the forward limit switch 45 is an example of the "forward position sensor" in the claims. Further, the retreat limit switch 46 is an example of the "retract position sensor" in the claims.

<Composition of air supply source>
The air supply source 42 is configured to supply the transport air A1, the forward air A2, and the reverse air A3 to the pellet supply unit 41 and the advance / retreat cylinder 44, respectively. The air supply source 42 is configured to pump a predetermined amount of pellets L measured by the pellet measuring unit 43 together with the transport air A1 toward the pellet supply unit 41 (Y2 direction).

<Structure of pellet supply unit>
The pellet supply unit 41 is configured to supply the pellet L to the pouring port 21a of the injection sleeve 21 under the control of the control unit 47 before pouring by the pouring device 100d. Further, the pellet supply unit 41 is arranged so as to face the hot water pouring device 100d with the injection sleeve 21 interposed therebetween. Further, the pellet supply unit 41 generally has a tubular shape extending in the Y direction.

<Structure of pellet supply unit and pellet measurement unit>
When the tip 41a provided with the discharge port 41b of the pellet supply 41 reaches the forward position in the state where the radle 31 of the hot water pouring device 100d is located at the pouring position, the pellet supply unit 41a Is configured to be arranged so as to collide with the radle 31 of the hot water pouring device 100d. That is, the radle 31 at the pouring position and the pellet supply unit 41 at the forward position spatially overlap each other. The end of the pellet supply 41 opposite to the tip 41a is connected to the air supply source 42.

The pellet measuring unit 43 is configured to be able to supply the pellet L in the middle of the pipeline connecting the pellet supply unit 41 and the air supply source 42. The pellet measuring unit 43 has a measuring function for measuring the amount of pellets L supplied in one molding cycle. Further, a discharge port 41b is provided at the tip end portion 41a of the Y2 direction end portion of the pellet supply portion 41.

Specifically, as shown in FIG. 7, the tip portion 41a has an L-shape when viewed from the X direction, and a discharge port 41b for discharging pellets L is provided at the lower end. Further, an L-shaped plate-shaped air bleeding member 411 is installed at the tip portion 41a. The air bleeding member 411 is installed so as to straddle the end surface of the tip portion 41a in the Y2 direction to the end surface in the Z1 direction. Further, the air bleeding member 411 is provided with a plurality of air bleeding holes 412. The air bleeding hole 412 has a function of discharging the transport air A1 to the outside of the pellet supply unit 41. Further, the end surface of the tip portion 41a in the Y2 direction (including the air bleeding member 411) collides with the pellet L transported by the transport air A1 and drops downward toward the pouring port 21a of the injection sleeve 21. It is configured.

That is, the air bleeding member 411 has a function of separating the transport air A1 and the pellet L. Further, the air bleeding member 411 has a function of suppressing the transport air A1 from heading toward the discharge port 41b so that the pellet L is not vigorously discharged from the discharge port 41b by the transport air A1. This prevents the pellet L from leaking (spilling) from the pouring port 21a.

The plurality of air bleeding holes 412 provided on the end surface of the tip portion 41a in the Y2 direction have an oval shape extending in the vertical direction, and are arranged so as to be arranged in a plurality of rows in the vertical direction and the horizontal direction. Further, the plurality of air bleeding holes 412 provided on the end face of the tip portion 41a in the Z1 direction have an oval shape extending in the Y direction, and are arranged so as to be arranged in a plurality of rows in the X direction and the Y direction. The air bleeding hole 412 may be a hole having a shape other than an oval shape, such as an elliptical shape or a rectangular shape.

As an example, the air bleeding hole 412 has a size of about 4 mm in the longitudinal direction and a size (width) of about 0.8 mm in the lateral direction. The air bleeding hole 412 is configured to have a size and a shape so that the pellet L having a particle size of about 1 mm illustrated above does not pass through and does not fit into the pellet L.

Here, in general, when the tip portion 41a of the pellet supply portion 41 is exposed to a high temperature, the pellet L passing through the tip portion 41a is melted, and the pellet L is fitted into the air bleeding hole 412. The tip portion 41a may be clogged by the pellet L.

Therefore, in the present embodiment, by making the radle 31 containing the molten metal stand by at the standby position, it is possible to prevent the pellet L passing through the tip portion 41a from reaching the melting temperature. That is, it is possible to suppress clogging of the tip portion 41a due to the pellet L.

<Cylinder configuration for advancing and retreating>
The advancing / retreating cylinder 44 shown in FIG. 8 is an air cylinder. Further, the advancing / retreating cylinder 44 is configured to advance / retreat the pellet supply unit 41 in the Y direction. Specifically, the advancing / retreating cylinder 44 is connected to the air supply source 42, and is configured to receive the forward air A2 and the reverse air A3 as drive sources from the air supply source 42. Further, the advancing / retreating cylinder 44 is configured to advance the pellet supply unit 41 from the retracting position to the advancing position by receiving the supply of the advancing air A2 from the air supply source 42.

On the other hand, the advancing / retreating cylinder 44 is configured to retract the pellet supply unit 41 from the advancing position to the retreating position by receiving the supply of the retreating air A3 from the air supply source 42. The advancing / retreating cylinder 44 may be configured by another drive mechanism such as an electromagnetic solenoid instead of the air cylinder.

Specifically, the advancing / retreating cylinder 44 retreats from the pouring port 21a of the injection sleeve 21 in the vertical direction by receiving the supply of the advancing air A2 from the air supply source 42. It is configured to advance from the position to a forward position facing the pouring port 21a of the injection sleeve 21. Since the pellet supply unit 41 is located at the forward position, the pellet L can be supplied from the discharge port 41b to the pouring port 21a by dropping. Further, the advancing / retreating cylinder 44 is configured to retract the pellet supply unit 41 from the advancing position to the retreating position by receiving the supply of the retreating air A3 from the air supply source 42.

<Configuration of forward limit switch>
The advance limit switch 45 is configured to be able to detect that the pellet supply unit 41 is located in the advance position. Therefore, the forward limit switch 45 is configured to be able to detect that the pellet supply unit 41 has reached the forward position.

<Configuration of backward limit switch>
The retreat limit switch 46 is configured to be able to detect that the pellet supply unit 41 is located at the retreat position. Therefore, the retreat limit switch 46 is configured to be able to detect that the pellet supply unit 41 has reached the retreat position.

<Structure of control unit>
As shown in FIG. 9, the control unit 47 is configured to acquire the forward position signal Q3 and the backward position signal Q2 from the forward limit switch 45 and the backward limit switch 46, respectively. Further, the control unit 47 is configured to be able to control the drive of the air supply source 42 and the drive of the pellet measuring unit 43, respectively. Further, the control unit 47 is configured to transmit and receive a predetermined signal to and from the main control unit 16.

The control unit 47 advances the pellet supply unit 41 from the retracted position to the forward position based on the fact that the hot water pouring device 100d starts moving from the pumping position to the standby position by the main control unit 16 and then reaches the standby position. It is configured to control the advance / retreat cylinder 44 so as to start.

Specifically, when the control unit 47 receives the standby position signal Q1 indicating that the hot water pouring device 100d has reached the standby position from the pumping position from the main control unit 16, the control unit 47 is used for advancing from the air supply source 42. The air A2 is configured to be supplied to the advancing / retreating cylinder 44. As a result, the pellet supply unit 41 advances from the retracted position to the advanced position. That is, the standby position signal Q1 is a trigger signal for starting the advance of the pellet supply unit 41 from the retracted position to the advanced position.

When the control unit 47 acquires the forward position signal Q3 indicating that the pellet supply unit 41 has reached the forward position from the forward limit switch 45 (the pellet supply unit 41 has reached the forward position by the forward limit switch 45). Is detected), the transport air A1 is sent from the air supply source 42 toward the pellet supply unit 41, so that the pellet L is pressure-fed to the pellet supply unit 41. As a result, the pellet L is discharged from the pellet supply unit 41, and the pellet L is supplied into the injection sleeve 21 from the pouring port 21a.

The control unit 47 measures the pellets L by the pellet measuring unit 43 during the period from the time when the pellets are supplied in the previous cycle until the forward limit switch 45 in the next cycle detects the forward position. The weighed pellet L is configured to be arranged in advance at a predetermined position where it can be pumped by the transport air A1. In short, the control unit 47 is configured to control the pellet L to be weighed and prepared so that the pellet L can be supplied immediately when the forward position signal Q3 is acquired.

The control unit 47 is configured to control the advance / retreat cylinder 44 so that the pellet supply unit 41 retracts to the retracted position during the period when the hot water pouring device 100d is stopped at the standby position after the pellet L is supplied. ing.

Specifically, the control unit 47 is configured to supply the retreating air A3 from the air supply source 42 to the advancing / retreating cylinder 44. As a result, the pellet supply unit 41 retreats from the forward position to the retreat position.

Here, the timing at which the control unit 47 starts retreating the pellet supply unit 41 may be, for example, after a predetermined time has elapsed from supplying the transport air A1 from the air supply source 42, or the pellet supply unit 41 advances. It may be after a predetermined time has passed since the position was reached.

When the control unit 47 acquires the retreat position signal Q2 indicating that the pellet supply unit 41 has reached the retreat position from the retreat limit switch 46 (the pellet supply unit 41 has reached the retreat position by the retreat limit switch 46). Is detected), the backward position signal Q2 is configured to be transmitted to the main control unit 16.

As described above, the control unit 47 controls to supply the pellet L to the pouring port 21a of the injection sleeve 21 while the pouring device 100d (radle 31) is stopped at the standby position, and supplies the pellets. It is configured to control the advancing / retreating cylinder 44 so as to start retreating from the advancing position to the retreating position of the unit 41.

Further, the control unit 47 supplies the pellet L to the standby position while the pouring device 100d (radle 31) is stopped, and starts the pellet supply unit 41 to retreat to the retracted position to supply the pellets. It is configured to control the tip portion 41a (see FIG. 6) of the portion 41 from colliding with the ruddle 31.

(Timing of movement of hot water pouring device and pellet supply device)
Next, with reference to FIGS. 2 to 6, the timing of movement of the hot water pouring device 100d (raddle 31) and the pellet supply unit 41 (pellet supply device 100b) with the passage of time (time change) will be described. In the following description, reference will be made to FIG. 10 for times t1 to t6.

As described above, the movement of the hot water pouring device 100d and the pellet supply unit 41 is the first arrangement state (initial state), the second arrangement state, the third arrangement state, the fourth arrangement state, and the fourth arrangement state shown in FIGS. 5 This is done in the order of arrangement.

As shown in FIG. 2, a state in which the radle 31 is located at the pumping position and the pellet supply unit 41 is located at the retracted position is defined as the first arrangement state (initial state). In the first arrangement state, the pouring device 100d is in a state where the pumping of a predetermined amount of molten metal by the radle 31 has already been completed, and the pellet supply device 100b is in a state where the pellet L can be immediately supplied by the transport air A1. Suppose there is.

First, at time t1, the movement of the radle 31 from the pumping position to the standby position is started.

Then, as in the second arrangement state shown in FIG. 3, the radle 31 reaches the standby position at time t2.

Then, in response to the standby position signal Q1, immediately after the radle 31 reaches the standby position (time t2), the pellet supply unit 41 starts advancing from the retracted position to the advanced position.

Then, as in the third arrangement state shown in FIG. 4, the pellet supply unit 41 reaches the forward position at time t3.

Then, in response to the forward position signal Q3, the pellet L is supplied into the injection sleeve 21 by the pellet supply device 100b from immediately after reaching the forward position of the pellet supply unit 41 (time t3) to time t4.

Then, at time t4 after the supply of the pellet L is completed, the pellet supply unit 41 starts retreating from the advancing position to the retreating position.

Then, as in the fourth arrangement state shown in FIG. 5, the pellet supply unit 41 reaches the retracted position at time t5.

Then, in response to the retreat position signal Q2, immediately after reaching the retreat position of the pellet supply unit 41 (time t5), the movement of the radle 31 from the standby position to the pouring position is started.

Then, as in the fifth arrangement state shown in FIG. 6, at time t6, the radle 31 reaches the pouring position and pouring is performed.

The die casting system 100 advances the pellet supply unit 41, supplies the pellet L to the injection sleeve 21, and supplies the pellet L to the injection sleeve 21 during the period from the time t2 to the time t5 when the pouring device 100d (radle 31) is stopped at the standby position. , The pellet supply unit 41 is configured to retreat. Further, the die casting system 100 moves the pouring device 100d (radle 31) during the period from the initial state in which the pellet supply unit 41 is located at the retracted position to the time t2 and the period after the time t5. It is configured. In short, the die casting system 100 is configured so that the pouring device 100d (raddle 31) and the pellet supply device 100b (pellet supply unit 41) are not moved at the same time.

(Processing for pouring and pellet supply by the main control unit)
Next, with reference to FIG. 11, the process for pouring hot water and supplying pellets by the main control unit 16 will be described with reference to the flowchart. FIG. 1 shall be referred to for each configuration used in the following description.

First, in step S1, the main control unit 16 controls to pump a predetermined amount of molten metal by the radle 31 located at the pumping position.

Then, in step S2, the main control unit 16 starts moving the radle 31 from the pumping position to the standby position. That is, the radle 31 is moved in the direction closer to the injection sleeve 21 (Y1 direction).

Then, in step S3, the main control unit 16 determines whether or not the radle 31 has reached the standby position. That is, the main control unit 16 determines whether or not the arm unit 32 has acquired the detection value of the encoder 32b indicating that the radle 31 has reached the standby position. If it is not determined that the radle 31 has reached the standby position, step S3 is repeated. When it is determined that the radle 31 has reached the standby position, the process proceeds to step S4.

Then, in step S4, the main control unit 16 transmits the standby position signal Q1 to the pellet supply device 100b. That is, a trigger signal for starting the movement of the pellet supply unit 41 from the retracted position to the forward position is transmitted to the pellet supply device 100b.

Then, in step S5, the main control unit 16 determines whether or not the backward position signal Q2 has been received from the pellet supply device 100b (control unit 47). That is, it is determined whether or not a trigger signal for starting the movement of the radle 31 from the standby position to the pouring position has been received. The fact that the backward position signal Q2 has been received means that the pellet supply unit 41 has already completed the supply of pellets L, and the pellet supply unit 41 is at a position (retracted position) where it does not collide with the hot water pouring device 100d. It is shown that.

If it is not determined in step S5 that the retreat position signal Q2 has been received from the pellet supply device 100b (control unit 47), the standby of the radle 31 is continued by repeating step S5. If it is determined that the backward position signal Q2 has been received, the process proceeds to step S6. The period from the transmission of the standby position signal Q1 in step S4 to the reception of the backward position signal Q2 in step S5 corresponds to the times t2 to t5 shown in FIG.

Then, in step S6, the main control unit 16 starts moving the radle 31 from the standby position to the pouring position.

Then, in step S7, the main control unit 16 determines whether or not the radle 31 has reached the pouring position. That is, it is determined by the main control unit 16 whether or not the arm unit 32 has acquired the detection value of the encoder 32b indicating that the radle 31 has reached the pouring position. If it is not determined that the radle 31 has reached the pouring position, step S7 is repeated. When it is determined that the radle 31 has reached the pouring position, the process proceeds to step S8.

Then, in step S8, the main control unit 16 pours hot water by the hot water pouring device 100d.

(Processing for pouring and pellet supply by the control unit)
Next, with reference to FIG. 12, the process for pouring hot water and supplying pellets by the control unit 47 will be described with reference to the flowchart. FIG. 1 shall be referred to for each configuration used in the following description.

First, in step S11, the control unit 47 determines whether or not the standby position signal Q1 has been received from the main control unit 16 (die casting device 100a). If it is not determined from the main control unit 16 that the standby position signal Q1 has been received, step S11 is repeated. If it is determined that the standby position signal Q1 has been received, the process proceeds to step S12. The fact that the standby position signal Q1 is received indicates that the radle 31 containing the molten metal is stopped at the standby position and the pouring device 100d is in a position where it does not collide with the pellet supply unit 41. ..

Then, in step S12, the control unit 47 starts advancing the pellet supply unit 41 from the retracted position to the advancing position. That is, the pellet supply unit 41 is moved in the direction closer to the injection sleeve 21 (Y2 direction).

Then, in step S13, the control unit 47 determines whether or not the pellet supply unit 41 has reached the forward position. That is, the control unit 47 determines whether or not the forward position signal Q3 (see FIG. 2) has been acquired from the forward limit switch 45. If it is not determined that the pellet supply unit 41 has reached the forward position, step S13 is repeated. When it is determined that the pellet supply unit 41 has reached the forward position, the process proceeds to step S14.

Then, in step S14, the control unit 47 sends the pellet L to the tip portion 41a of the pellet supply unit 41 together with the transport air A1 supplied from the air supply source 42. Then, the pellet L is discharged from the discharge port 41b, and the pellet L is supplied into the injection sleeve 21 from the pouring port 21a.

Then, in step S15, the pellet supply unit 41 starts retreating from the advancing position to the retreating position. That is, the pellet supply unit 41 is moved in the direction away from the injection sleeve 21 (Y1 direction).

Then, in step S16, the control unit 47 determines whether or not the pellet supply unit 41 has reached the retracted position. That is, the control unit 47 determines whether or not the backward position signal Q2 has been acquired from the backward limit switch 46. If it is not determined that the pellet supply unit 41 has reached the retracted position, step S16 is repeated. When it is determined that the pellet supply unit 41 has reached the retracted position, the process proceeds to step S17.

Then, in step S17, the control unit 47 transmits the backward position signal Q2 to the main control unit 16.

(Effect of this embodiment)
Next, the effect of this embodiment will be described.

In the present embodiment, as described above, the control unit 47 supplies the pellet L to the pouring port 21a while the pouring device 100d is stopped at the standby position located between the pumping position and the pouring position. The advancing / retreating cylinder 44 is controlled so as to start retreating from the advancing position to the retreating position of the pellet supply unit 41. As a result, the pellet L is supplied by the pellet supply unit 41 to the pellet supply unit 41 during the period in which the water injection device 100d is stopped (standby) at the standby position, which is a position away from the pouring position on the pumping position side. It can be set back. Therefore, when the pellet L is supplied by the pellet supply device 100b as in the conventional case, as compared with the case where the pouring device 100d (raddle 31) from which the molten metal is pumped is located at the pouring position, the pellet L is supplied. It is possible to prevent the pellet L in the pellet supply unit 41 from being exposed to a high temperature by the molten metal pumped by the pouring device 100d. As a result, softening of the pellet L can be suppressed, so that clogging of the pellet supply unit 41 by the pellet L can be suppressed. Further, the pellet supply device 100b does not draw the molten metal after the pellet L is supplied and moves the hot water pouring device 100d from the pumping position to the pouring position. Since it can be made to stand by at a standby position close to the pouring position, the cycle time can be shortened. As described above, clogging of the pellet supply unit 41 (pellet supply device 100b) due to the pellet L can be suppressed while shortening the cycle time.

Further, in the present embodiment, as described above, after the pouring device 100d starts moving from the pumping position to the standby position, the control unit 47 starts advancing from the retracting position to the advancing position of the pellet supply unit 41. It is configured to control the advancing / retreating cylinder 44 so as to do so. As a result, since the molten metal is pumped, the pouring device 100d, which is operated at a lower speed than the pellet feeding device 100b, can be moved toward the pouring port 21a before the pellet feeding device 100b, so that the pellet L can be moved. The pouring device 100d can be brought to the pouring position at an early stage after the supply.

Further, in the present embodiment, as described above, based on the fact that the control unit 47 reaches the standby position after the pouring device 100d starts moving from the pumping position to the standby position, the pellet supply unit 41 The advancing / retreating cylinder 44 is configured to be controlled so as to start advancing from the retracting position to the advancing position. As a result, the pellet supply unit 41 can be started to move forward when the pouring device 100d reaches the standby position where the pouring device 100d is stopped. Therefore, the pellets are surely stopped. The supply unit 41 can be advanced. It is possible to prevent the molten metal from being applied to the pellet supply unit 41 due to the liquid level fluctuation of the molten metal caused by the movement of the hot water pouring device 100d.

Further, in the present embodiment, as described above, the advancing / retreating cylinder 44 is moved so that the control unit 47 retreats to the retreating position while the pouring device 100d is stopped at the standby position. Configure to control. As a result, the movement of the pouring device 100d to the pouring position can be started in a state where the pellet supply unit 41 is reliably retracted, so that the pellet supply unit 41 stops in the middle of the retreating position from the advancing position. Even if it does, it is possible to prevent the pouring device 100d from colliding with the pellet supply unit 41.

Further, in the present embodiment, as described above, the pellet supply unit 41 is arranged so as to face the hot water pouring device 100d with the injection sleeve 21 interposed therebetween, and the tip portion 41a provided with the discharge port 41b of the pellet supply unit 41. When the tip 41a reaches the forward position, the tip 41a is configured to be arranged so as to collide with the ladle 31 of the hot water pouring device 100d, and the control unit 47 is stopped at the standby position. During this period, the pellet L is supplied and the pellet supply unit 41 is started to retreat to the retracted position, so that control is performed to prevent the tip portion 41a of the pellet supply unit 41 from colliding with the ruddle 31. Configure to. As a result, in order to avoid collision (interference) between the radle 31 of the hot water pouring device 100d and the pellet supply unit 41 as in the conventional case, the radle 31 is placed above the pellet supply unit 41 and the pellet supply unit 41. Since the radle 31 can be arranged in the vicinity of the pouring port 21a in the height direction as compared with the case where the ladle 31 is arranged in the vicinity of the pouring port 21a at intervals, it is possible to prevent the molten metal from leaking from the pouring port 21a at the time of pouring. be able to.

Further, in the present embodiment, as described above, the retreat limit switch 46 that detects that the pellet supply unit 41 is located in the retracted position and the forward limit limit that detects that the pellet supply unit 41 is located in the forward position. A switch 45 is provided. As a result, it is possible to reliably detect that the pellet supply unit 41 has reached the retracted position by the retreat limit switch 46. Therefore, by moving the pellet supply unit 41 toward the pouring position after retreating, the pellets are supplied. It is possible to avoid a collision between the unit 41 and the hot water pouring device 100d. Further, since it is possible to reliably detect that the pellet supply unit 41 has reached the forward position by the advance limit switch 45, it is possible to appropriately determine the timing at which the pellet L is supplied by the pellet supply unit 41. As a result, it is possible to prevent the pellet L from leaking from the pouring port 21a.

Further, in the present embodiment, as described above, the control unit 47 supplies the pellet L to the standby position, which is closer to the pouring position than the pumping position, while the pouring device 100d is stopped. It is configured to control the start of retreating of the pellet supply unit 41 to the retreating position. As a result, the pouring device 100d can be kept on standby at a position closer to the pouring position as compared with the case where the standby position is closer to the pumping position than the pouring position. The pouring device 100d can reach the pouring position at an early stage after the start of movement from the standby position to the pouring position. Therefore, it is possible to suppress a decrease in the temperature of the molten metal.

Further, in the present embodiment, as described above, after the pellet supply device 100b starts retreating from the forward position to the retreat position, the main control unit 16 starts moving from the standby position of the radle 31 to the pouring position. The motor 32a is configured to control the motor 32a. As a result, the pellet supply device 100b located above the pouring port 21a can be moved (backward) before the pouring device 100d, so that the pouring water moves toward the pouring position above the pouring port 21a. It is possible to prevent the device 100d (radle 31) from colliding with the pellet feeding device 100b. Further, since it is possible to prevent the pouring device 100d (radle 31) from approaching the pellet supply device 100b, it is possible to prevent the pellet L in the pellet supply device 100b from being heated. As a result, clogging of the pellet supply device 100b due to the pellet L can be effectively suppressed.

Further, in the present embodiment, as described above, the main control unit 16 waits for the radle 31 based on the fact that the pellet supply device 100b starts retreating from the forward position to the retreat position and then reaches the retreat position. The motor 32a is configured to be controlled so as to start moving from the position to the pouring position. As a result, the pellet supply device 100b and the hot water pouring device 100d can be started to move to the pouring position in a state where the pellet supply device 100b is reliably retracted from above the pouring port 21a. Collision with can be reliably prevented.

Further, in the present embodiment, as described above, the standby position is set to a position closer to the pouring position than the pumping position. As a result, the pouring device 100d can be kept on standby at a position closer to the pouring position as compared with the case where the standby position is closer to the pumping position than the pouring position. The pouring device 100d can reach the pouring position at an early stage after the start of movement from the standby position to the pouring position. Therefore, it is possible to suppress a decrease in the temperature of the molten metal.

[Modification example]
It should be noted that the embodiments disclosed this time are exemplary in all respects and are not considered to be restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the above-described embodiment, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims.

For example, in the above embodiment, an example is shown in which the advancing / retreating cylinder 44 is controlled by the control unit 47 so that the pellet supply unit 41 starts advancing based on the arrival of the hot water pouring device 100d at the standby position. However, the present invention is not limited to this. In the present invention, the control unit 47 may control the advancing / retreating cylinder 44 so that the pellet supply unit 41 starts advancing before the pouring device 100d reaches the standby position.

Further, in the above embodiment, an example is shown in which the advancing / retreating cylinder 44 is controlled by the control unit 47 so that the pellet supply unit 41 retreats to the retreating position while the hot water pouring device 100d is stopped at the standby position. However, the present invention is not limited to this. In the present invention, while the hot water pouring device is stopped at the standby position, the control unit 47 controls the advancing / retreating cylinder 44 so that the pellet supply unit 41 starts retreating to the retreating position, and pouring is performed during the retreating. The movement of the hot water device 100d from the standby position may be started.

Further, in the above embodiment, an example is shown in which the pellet supply device 100b is started to move forward from the backward position to the forward position by using the standby position signal Q1 indicating that the hot water pouring device 100d has reached the standby position as a trigger. , The present invention is not limited to this. In the present invention, for example, the pellet supply device 100b may start advancing from the retracted position to the advancing position based on the fact that the pouring device 100d has started moving from the drawing position to the standby position.

Further, in the above embodiment, an example is shown in which the movement of the pouring device 100d from the standby position to the pouring position is started by using the retreating position signal Q2 indicating that the pellet supply device 100b has reached the retreating position as a trigger. However, the present invention is not limited to this. In the present invention, for example, the pellet supply device 100b may start advancing from the standby position to the pouring position based on the start of the movement from the advancing position to the retreating position.

Further, in the above embodiment, an example in which the hot water pouring device 100d is arranged on one side of the injection sleeve 21 in the Y direction and the pellet supply device 100b is arranged on the other side is shown, but the present invention is not limited to this. In the present invention, the arrangement of the hot water pouring device 100d and the pellet supply device 100b is not limited to the example of the above embodiment, such as arranging the hot water pouring device 100d and the pellet supply device 100b on one side of the injection sleeve 21 in the Y direction.

Further, in the above embodiment, an example in which the standby position is set to a position closer to the pouring position than the drawing position is shown, but the present invention is not limited to this. In the present invention, the standby position may be a position closer to the pumping position than the pouring position.

Further, in the above embodiment, an example in which the hot water pouring device 100d is driven by the motors 31b and 32a is shown, but the present invention is not limited to this. In the present invention, the hot water pouring device 100d may be driven by a drive source other than the motors 31b and 32a such as an air cylinder.

Further, in the above embodiment, an example is shown in which the ladle 31 at the pouring position and the pellet supply unit 41 at the forward position are arranged at positions where they spatially overlap each other, but the present invention is not limited to this. In the present invention, for example, the ruddle 31 at the pouring position is spaced above the pellet supply section 41 at the advancing position so that the ruddle 31 at the pouring position and the pellet supply section 41 at the advancing position do not spatially overlap each other. May be spaced apart.

Further, in the above embodiment, an example in which the backward position sensor and the forward position sensor of the present invention are configured by a limit switch is shown, but the present invention is not limited to this. In the present invention, for example, the backward position sensor and the forward position sensor of the present invention may be configured by a non-contact optical sensor or the like.

Further, in the above embodiment, for convenience of explanation, the processing of the control unit 47 and the main control unit 16 has been described using a flow-driven flowchart in which the processing is sequentially performed along the processing flow, but the present invention is limited to this. I can't. In the present invention, the processing operations of the control unit 47 and the main control unit 16 may be performed by event-driven (event-driven) processing that executes processing for each event. In this case, it may be completely event-driven, or it may be a combination of event-driven and flow-driven.

16 Main control unit (die-cast side control unit)
21 Injection sleeve 21a Pouring port 31 Raddle 32a Motor (Raddle drive unit)
41 Pellet supply section (lubricant supply section)
41a Tip 41b Discharge port 44 Cylinder for advancing and retreating (supply unit drive unit)
45 Forward limit switch (forward position sensor)
46 Retreat limit switch (reverse position sensor)
47 Control unit (supply device side control unit)
100 Die casting system 100a Die casting equipment 100b Pellet supply equipment (lubricant supply equipment)
100c Die-cast molding machine 100d Hot water injection device F Melting furnace L Pellet (solid lubricant)
M mold

Claims (12)

A lubricant supply unit that includes a discharge port for solid lubricant and supplies solid lubricant to the pouring port of the injection sleeve before pouring by the pouring device.
The lubricant is located at an advancing position where the discharge port is arranged above the pouring port and discharges solid lubricant from the discharging port, and a retracting position where the discharging port is arranged so as to deviate from above the pouring port. The supply unit drive unit that moves the supply unit forward and backward,
A supply device side control unit that controls the supply of the solid lubricant to the pouring port and the drive of the supply unit drive unit is provided.
The control unit on the supply device side is in the period during which the water pouring device is stopped at a standby position located between the pumping position where the molten metal is pumped by the water pouring device and the pouring position where the water pouring is performed by the water pouring device. It is configured to control the supply of the solid lubricant to the pouring port and to control the drive unit of the supply unit so as to start the retreat of the lubricant supply unit from the advance position to the retreat position. Lubricant supply device. The supply device side control unit starts moving the lubricant supply unit from the retracted position to the forward position after the hot water pouring device starts moving from the pumping position to the standby position. The lubricant supply device according to claim 1, which is configured to control the supply unit drive unit. The control unit on the supply device side has reached the standby position after the hot water pouring device has started moving from the pumping position to the standby position, and then from the retracted position of the lubricant supply unit. The lubricant supply device according to claim 2, which is configured to control the supply unit drive unit so as to start advancing to the advance position. The supply device side control unit is configured to control the supply unit drive unit so that the lubricant supply unit retracts to the retracted position while the hot water pouring device is stopped at the standby position. The lubricant supply device according to any one of claims 1 to 3. The lubricant supply unit is arranged so as to face the hot water pouring device with the injection sleeve interposed therebetween, and when the tip portion of the lubricant supply unit provided with the discharge port reaches the forward position, the lubricant supply unit is said to be opposed to the water injection device. The tip portion is configured to be arranged at a position where it collides with the ruddle of the hot water pouring device.
The supply device side control unit supplies the solid lubricant to the standby position during the period when the hot water pouring device is stopped, and starts the retreat of the lubricant supply unit to the retreat position. The lubricant supply device according to any one of claims 1 to 4, which is configured to control the tip of the lubricant supply unit from colliding with the ruddle. A retreat position sensor that detects that the lubricant supply unit is located at the retreat position,
The lubricant supply device according to any one of claims 1 to 5, further comprising a forward position sensor for detecting that the lubricant supply unit is located at the forward position. The supply device side control unit supplies solid lubricant to the standby position, which is closer to the pouring position than the pumping position, while the pouring device is stopped, and the lubricant supply unit. The lubricant supply device according to any one of claims 1 to 6, which is configured to control the start of retreating to the retreating position. A die-casting device that injects hot water into the pouring port of the injection sleeve after the solid lubricant is supplied by the lubricant supply device.
A die casting machine including the injection sleeve having the pouring port and to which a mold is attached.
A ruddle for pumping molten metal from the melting furnace, a pumping position where the radle pumps molten metal from the melting furnace, a pouring position where the ladle is arranged above the pouring port, and a pumping position and the pouring position. A hot water pouring device including a ladle drive unit for moving the ladle to a standby position located between the two.
A die-cast side control unit that controls the drive of the ruddle drive unit is provided.
In the die casting side control unit, solid lubricant is supplied to the pouring port by the lubricant supply device, and the lubricant supply device is arranged above the pouring port from a forward position, and from above the pouring port. A die casting device configured to control the ruddle drive unit so as to stop the ruddle in the standby position for a period of time until the start of retreat to a deviated retracted position. The die casting side control unit starts the movement of the ladle from the standby position to the pouring position after the lubricant supply device starts retreating from the forward position to the retreat position. The die casting device according to claim 8, which is configured to control a drive unit. The die casting side control unit has reached the retreating position after the lubricant supply device has started retreating from the advancing position to the retreating position, and based on the fact that the lubricant supply device has reached the retreating position, the pouring position from the standby position of the ruddle. The die casting device according to claim 9, which is configured to control the ruddle drive unit so as to start moving to. The die casting device according to any one of claims 8 to 10, wherein the standby position is a position closer to the pouring position than the pumping position. A die-cast molding machine that includes an injection sleeve with a spout and a mold can be attached to it.
A lubricant supply unit having a solid lubricant discharge port and supplying the solid lubricant to the pouring port, and a forward movement in which the discharge port is arranged above the pouring port and discharges the solid lubricant from the discharge port. A lubricant supply device including a supply unit drive unit that moves the lubricant supply unit forward and backward at a position and a retracted position where the discharge port is arranged away from above the pouring port.
Between the ruddle for pumping the molten metal from the melting furnace, the pumping position where the ruddle pumps the molten metal from the melting furnace, the pouring position where the ladle is located above the pouring port, and between the pumping position and the pouring position. A pouring device that includes a ruddle drive unit that moves the ruddle forward and backward, and that pours hot water into the pouring port after the solid lubricant is supplied by the lubricant supply device.
The die casting machine is provided with a lubricant supply device and a control means for controlling the hot water pouring device.
The control means controls the ruddle drive unit so as to move the ruddle from the pumping position to the standby position and stop the ruddle at the standby position, and stops the ruddle at the standby position. During the period of time, the lubricant supply device supplies the solid lubricant to the pouring port, and the supply unit drive unit controls to start the retreat of the lubricant supply unit from the advance position to the retreat position. A die casting system that is configured to control.

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