JP2019018243A - Lubricant feeding device, die cast device and die cast molding system - Google Patents

Abstract

To provide a lubricant feeding device capable of suppressing the clogging of the lubricant feeding device caused by a solid lubricant while reducing a cycle time.SOLUTION: Provided is a pellet feeding device 100 comprising: a pellet feeding part 41 including a discharge port 41b of a pellet L and feeding the pellet L to a molten metal pouring port 21a of an injection sleeve 21 before molten metal pouring by a molten metal pouring apparatus 100d; an advance/retreat cylinder 44 for advancing the pellet feeding part 41 to an advance position in which the discharge port 41b is arranged over the molten metal pouring port 21a in order to discharge the pellet L from the discharge port 41b, or for retreating the pellet feeding part to a retreat position in which the discharge port 41b is arranged away from over the molten metal pouring port 21a; and a control part 47 controlling the feed of the pellet L to the molten metal pouring port 21a and the advance/retreat cylinder 44. The control part 47 controls; when the molten metal pouring apparatus stops at a standby position; the feed of the pellet L to the molten metal pouring port 21a to be done; and the advance/retreat cylinder 44 to start retreating the pellet feeding part 41 from the advance position to the retreat position.SELECTED DRAWING: Figure 2

Description

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

  2. Description of the Related Art Conventionally, a die casting apparatus that supplies 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 apparatus including a bead dispenser (lubricant supply device), a pouring machine, and a die casting machine including a sleeve having a pouring port. The bead dispenser includes a bead discharge unit (lubricant supply unit) that discharges beads (solid lubricant), and the bead discharge unit is moved forward from the pouring port and moved backward from the pouring port. It is configured to be able to move forward and backward. The bead discharge section is configured to supply beads to the pouring spout at the forward position. The pouring machine includes a ladle, and is configured to be able to move the ladle to a pumping position where the molten metal is pumped from the melting furnace and a pouring position disposed above the pouring port.

  The ladle located at the pouring position is disposed above the bead ejection part and in the vicinity of the bead ejection part with a gap so as not to interfere with the bead ejection part located at the advance position. The pouring machine is located at the pouring position (standby) when the bead ejection unit ejects the beads at the forward position, and after the beads are ejected from the bead ejection unit, the bead ejection unit is retracted to the retracted position. Based on what has been done, it is configured to perform pouring.

Utility Model Registration No. 3193143

  However, in the die-casting device of the above-mentioned patent document 1, when supplying beads by a bead dispenser (lubricant supply device), the ladle that has drawn the molten metal is positioned (standby) at a pouring position near the forward 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 discharge section has reached the retracted position after supplying the beads, it takes too much time from the bead supply to the pouring to increase the cycle time. Production efficiency is reduced.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to suppress clogging of the lubricant supply device by the solid lubricant while shortening the 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, a lubricant supply device according to the first invention includes a solid lubricant discharge port, and supplies the solid lubricant to the pouring port of the injection sleeve before pouring by the pouring device. Lubricant supply unit with a supply unit, a forward position where the discharge port is disposed above the pouring port, and discharging the solid lubricant from the discharge port, and a backward position where the discharge port is disposed deviating from the upper side of the pouring port A supply unit drive unit that moves the forward and backward movements, and 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. Control to supply solid lubricant to the pouring port during the period when the pouring device is stopped at the standby position located between the pouring position where the molten metal is pumped by the device and the pouring position where the pouring device is used for pouring. And move back from the forward position to the reverse position of the lubricant supply section To start, and is configured to control the supply unit driver.

  As described above, this lubricant supply device causes the supply device side control unit to perform solid lubrication at 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. The supply unit drive unit is controlled so that the supply of the lubricant is controlled and the lubricant supply unit starts to retreat from the advance position to the retreat position. As a result, during the period when the pouring device is stopped (standby) at the standby position that is far from the pouring position to the drawing position side, the lubricant supply unit supplies the solid lubricant to Can be retreated. For this reason, when supplying the solid lubricant by the lubricant supply device as in the prior art, when supplying the solid lubricant, compared to the case where the pouring device (laddle) that pumps the molten metal is located at the pouring position, In addition, the solid lubricant in the lubricant supply section can be prevented from being exposed to high temperatures by the molten metal pumped by the pouring device. As a result, since the solid lubricant can be suppressed from being softened, clogging of the lubricant supply unit by the solid lubricant can be suppressed. Also, the lubricant supply device does not draw the molten metal after supplying the solid lubricant and moves the pouring device from the pumping position to the pouring position. Since it can be made to stand by at the stand-by position near a pouring position, cycle time can be shortened. As described above, clogging of the lubricant supply unit (lubricant supply device) by the solid lubricant can be suppressed while shortening the cycle time.

  In the above-described lubricant supply device, preferably, the supply device-side control unit starts moving the lubricant supply unit from the retracted position to the advanced position after the pouring device starts moving from the drawing position to the standby position. In this way, the supply unit drive unit is controlled. With this configuration, since the molten metal is pumped, the pouring device that is moved at a lower speed than the lubricant supply device can be moved toward the pouring port before the lubricant supply device. The pouring device can reach the pouring position at an early stage after supplying the lubricant.

  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 pouring device has reached the standby position after starting the movement from the pumping position to the standby position. The supply unit drive unit is configured to control the advancement to the position. If comprised in this way, in the state which the pouring apparatus reached | attained the standby position which stops a pouring apparatus, since advance of a lubricant supply part can be started, in the state which stopped the pouring apparatus reliably The lubricant supply unit can be advanced. It is possible to prevent the molten metal from being applied to the lubricant supply part due to the liquid level fluctuation of the molten metal caused by the movement of the pouring device.

  In the above-described lubricant supply device, preferably, the supply device side control unit sets the supply unit driving unit so that the lubricant supply unit moves back to the retracted position during the period when the pouring device is stopped at the standby position. Configured to control. If comprised in this way, since the movement to the pouring position of a pouring apparatus can be started in the state which moved the lubricant supply part reliably, the lubricant supply part is in the middle of the retreat position from the advance position. Even if it has stopped at the point, it is possible to prevent the hot water pouring device from colliding with the lubricant supply unit.

  In the above-described lubricant supply device, preferably, the lubricant supply unit is disposed opposite to the pouring device with the injection sleeve interposed therebetween, and the tip portion where the discharge port of the lubricant supply unit is provided has reached the advance position. In the case, it is configured to be arranged at a position where the tip portion collides with the ladle of the hot water pouring device, the supply device side control unit, during the period when the hot water pouring device is stopped at the standby position, By supplying the solid lubricant and starting the retreat of the lubricant supply unit to the retreat position, control is performed to avoid the tip of the lubricant supply unit from colliding with the ladle. If comprised in this way, in order to avoid the collision (interference) with the ladle of a pouring apparatus and a lubricant supply part like before, a ladle is provided above a lubricant supply part, and lubricant supply. Compared to the case where the ladle is arranged at an interval in the vicinity of the portion, the ladle can be arranged in the vicinity of the pouring port in the height direction, so that it is possible to suppress the leakage of the molten metal from the pouring port during pouring. it can.

  In the lubricant supply device, preferably, a reverse position sensor that detects that the lubricant supply unit is positioned at the reverse position, and a forward position sensor that detects that the lubricant supply unit is positioned at the forward position. Further prepare. By configuring in this way, it is possible to reliably detect that the lubricant supply unit has reached the retreat position by the retreat position sensor, so by moving the lubricant supply unit toward the pouring position after retreating, Collision between the lubricant supply unit and the pouring device can be avoided. In addition, since the forward position sensor can reliably detect that the lubricant supply unit has reached the forward position, the timing for supplying the solid lubricant by the lubricant supply unit can be appropriately determined. Thereby, it can suppress that a solid lubricant leaks from a pouring gate.

  In the lubricant supply device described above, the supply device-side control unit preferably supplies the solid lubricant during a period in which the pouring device is stopped at a standby position that is closer to the pouring position than the pumping position. The lubricant supply unit is configured to perform control to start retreating to the retreat position. If comprised in this way, compared with the case where a stand-by position is a position near a pumping position rather than a pouring position, since a pouring apparatus can be made to stand by in a position near a pouring position, pouring The pouring device can reach the pouring position at an early stage after the movement of the apparatus from the standby position to the pouring position is started. For this reason, it can suppress that the temperature of a molten metal falls.

  A die casting apparatus according to the second aspect of the present invention is a die casting apparatus for pouring a pouring port of an injection sleeve after supplying a solid lubricant by a lubricant supplying device, including an injection sleeve having a pouring port, to which a mold is attached. A die casting machine, a ladle that draws the molten metal from the melting furnace, a pouring position where the ladle draws the molten metal from the melting furnace, a pouring position where the ladle is located above the pouring port, and a pumping position and a pouring position A pouring device including a ladle driving unit that moves the ladle at a standby position positioned between the die casting side control unit for controlling the driving of the ladle driving unit, and the die casting side control unit includes a lubricant supply device The solid lubricant is supplied to the pouring port, and the lubricant supply device moves backward from the forward position where it is disposed above the pouring port to the retracted position where it is deviated from above the pouring port. Period until the start, and it is configured to control the ladle drive unit to stop the ladle to the standby position.

  In this die casting apparatus, as described above, the die casting side control unit is operated from the forward position where the solid lubricant is supplied to the pouring port by the lubricant supplying device and the lubricant supplying device is disposed above the pouring port. The ladle drive unit is controlled so that the ladle is stopped at the standby position located between the pumping position and the pouring position until the start of the retreat to the retreat position arranged deviating from the top of the pouring gate. Configure. As a result, during the period when the pouring device is stopped (standby) at the standby position that is distant from the pouring position to the drawing position side, the lubricant supply device supplies the solid lubricant to the lubricant supply device. Can be retreated. For this reason, when supplying the solid lubricant by the lubricant supply device as in the prior art, when supplying the solid lubricant, compared to the case where the pouring device (laddle) that pumps the molten metal is located at the pouring position, In addition, the solid lubricant in the lubricant supply device can be prevented from being exposed to a high temperature by the molten metal pumped by the pouring device. As a result, since the solid lubricant can be suppressed from being softened, clogging of the lubricant supply device by the solid lubricant can be suppressed. Also, the lubricant supply device does not draw the molten metal after supplying the solid lubricant and moves the pouring device from the pumping position to the pouring position. Since it can be made to stand by at the stand-by position near a pouring position, cycle time can be shortened. As described above, it is possible to provide a die casting apparatus capable of suppressing clogging of the lubricant supply apparatus due to the solid lubricant while shortening the cycle time.

  In the above-mentioned die casting apparatus, preferably, the die casting side control unit starts the movement from the standby position of the ladle to the pouring position after the lubricant supply device starts moving backward from the forward movement position to the backward movement position. The ladle driving unit is configured to be controlled. With this configuration, the lubricant supply device located above the pouring port can be moved (retracted) earlier than the pouring device, so that the pouring moves toward the pouring position above the pouring port. It is possible to suppress the hot water device (ladle) from colliding with the lubricant supply device. Moreover, since it can suppress that a pouring apparatus (laddle) approaches a lubricant supply apparatus, it can suppress that the solid lubricant in a lubricant supply apparatus is heated. As a result, clogging of the lubricant supply device with the solid lubricant can be effectively suppressed.

  In this case, preferably, the die casting side control unit starts from the forward movement position to the backward movement position and then reaches the backward movement position from the standby position of the ladle to the pouring position. The ladle driving unit is controlled so as to start the movement. According to this structure, the lubricant supply device can be started to move to the pouring position while the lubricant supply device is reliably retracted from above the pouring port. A collision with the apparatus can be reliably prevented.

  In the above-described die casting apparatus, the standby position is preferably a position closer to the pouring position than the drawing position. If comprised in this way, compared with the case where a stand-by position is a position near a pumping position rather than a pouring position, since a pouring apparatus can be made to stand by in a position near a pouring position, pouring The pouring device can reach the pouring position at an early stage after the movement of the apparatus from the standby position to the pouring position is started. For this reason, it can suppress that the temperature of a molten metal falls.

  The die-cast molding system according to the third aspect of the present invention includes an injection sleeve having a pouring port, a die-cast molding machine to which a mold is attached, a solid lubricant discharge port, and a lubrication for supplying the solid lubricant to the pouring port. Lubricant supply to the agent supply section, the forward position where the discharge port is arranged above the pouring port, the solid lubricant is discharged from the discharge port, and the backward position where the discharge port is arranged deviating from the upper side of the pouring port Lubricant supply device including a supply unit drive unit that moves the part forward and backward, a ladle that draws molten metal from the melting furnace, a pumping position where the ladle pumps molten metal from the melting furnace, and a pouring position where the ladle is located above the pouring port And a ladle drive unit for moving the ladle forward and backward at a standby position between the pumping position and the pouring position, and pouring into the pouring port after supplying the solid lubricant by the lubricant supply device And Daika And a control means for controlling the lubricant supply device and the pouring device. The control means moves the ladle from the pumping position to the standby position and stops the ladle at the standby position. During the period when the drive unit is controlled and the ladle is stopped at the standby position, the lubricant supply device supplies solid lubricant to the pouring port, and the lubricant supply unit starts to retreat from the advance position to the retreat position. It is comprised so that a supply part drive part may be controlled to perform control.

  As described above, this die casting molding system moves the ladle from the pumping position to the standby position between the pumping position and the pouring position, and stops the ladle at the standby position. In addition, during the period when the ladle is stopped at the standby position, the solid lubricant is supplied to the pouring port by the lubricant supply device, and the lubricant supply unit starts to retreat from the advance position to the retreat position. It is comprised so that a supply part drive part may be controlled to perform. As a result, during the period when the pouring device is stopped (standby) at the standby position that is far from the pouring position to the drawing position side, the lubricant supply unit supplies the solid lubricant to Can be retreated. For this reason, when supplying the solid lubricant by the lubricant supply device as in the prior art, when supplying the solid lubricant, compared to the case where the pouring device (laddle) that pumps the molten metal is located at the pouring position, In addition, the solid lubricant in the lubricant supply section can be prevented from being exposed to high temperatures by the molten metal pumped by the pouring device. As a result, since the solid lubricant can be suppressed from being softened, clogging of the lubricant supply unit by the solid lubricant can be suppressed. Also, the lubricant supply device does not draw the molten metal after supplying the solid lubricant and moves the pouring device from the pumping position to the pouring position. Since it can be made to stand by at the stand-by position near a pouring position, cycle time can be shortened. As described above, it is possible to provide a die-cast molding 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 molding system capable of suppressing clogging of the lubricant supply device with a solid lubricant while shortening the cycle time. Can do.

It is the typical side view showing the whole die cast molding system composition by one embodiment. It is the typical side view which showed the pouring apparatus located in the drawing position of the die-casting system by one Embodiment, and the pellet supply apparatus located in a retreat position. It is the typical side view which showed the pouring apparatus located in the standby position of the die-casting system by one Embodiment, and the pellet supply apparatus before the pellet supply located in a retreat position. It is the typical side view which showed the pouring apparatus located in the stand-by position of the die-casting system by one Embodiment, and the pellet supply apparatus located in an advance position. It is the typical side view which showed the pouring apparatus located in the stand-by position of the die-casting system by one Embodiment, and the pellet supply apparatus after the pellet supply located in a retreat position. It is the typical side view which showed the pouring apparatus located in the pouring position of the die-casting system by one Embodiment, and the pellet supply apparatus located in a retreat position. It is the elements on larger scale which showed the front-end | tip part of the pellet supply part of the die-casting system by one Embodiment. It is the figure which showed the pellet supply apparatus of the die-casting system by one Embodiment. 1 is a block diagram illustrating an overall configuration of a die casting system according to an embodiment. It is a figure for demonstrating the timing of the movement of the pouring apparatus and pellet supply part apparatus of the die-casting system by one Embodiment. It is a flowchart for demonstrating the process for the pouring and pellet supply by the main control part of the die-casting system by one Embodiment. It is a flowchart for demonstrating the process for the pouring and pellet supply by the control part of the die-casting system by one Embodiment.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

  With reference to FIGS. 1-12, the structure of the die-casting system 100 by one Embodiment and the die-casting apparatus 100a and the pellet supply apparatus 100b which are one structure of the die-casting system 100 is demonstrated. The pellet supply device 100b is an example of the “lubricant supply device” in the claims.

  In the following description, the movement 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-cast molding system)
A die casting molding system 100 according to the present embodiment shown in FIG. 1 includes a die casting apparatus 100a and a pellet supply apparatus 100b. The die casting apparatus 100a includes a die casting machine 100c and a pouring apparatus 100d.

  The die-cast molding system 100 is configured to supply pellets L into the injection sleeve 21 provided in the die-cast molding machine 100c by the pellet supply device 100b, and then pour the molten metal into the injection sleeve 21 by the pouring device 100d. ing. The supply of the pellet L and the pouring are performed by dropping the pellet L and the molten metal from above the injection sleeve 21 (pouring port 21a).

  Further, the die casting molding system 100 uses a plunger 22 provided in the die casting machine 100c to inject a molten metal poured into the injection sleeve 21 into a mold M attached to the die casting molding machine 100c. Die-cast product). The pellet L is an example of the “solid lubricant” in the claims.

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

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

  As shown in FIG. 2, the die casting molding system 100 is configured to supply pellets L by the pellet supply device 100 b and pouring by the pouring device 100 d through the pouring port 21 a of the injection sleeve 21. Yes. Therefore, the die-cast molding system 100 supplies the pellet L by the pellet supply device 100b so that the pellet supply device 100b and the pouring device 100d do not collide with each other above the pouring port 21a. During the period until retreat, the pouring device 100d is configured to stop (standby) at a standby position deviated from the upper side of the pouring port 21a. Details will be described later.

  2, 3, 4, 5, and 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 arrangement states in the middle of the die casting apparatus 100a and the pellet supply apparatus 100b that move in the molding cycle in the order of movement.

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

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

  Next, as shown in FIG. 2, the molten metal is pumped from the melting furnace F by the ladle 31 of the pouring device 100 d located at the pumping position. It should be noted that the pumping of the molten metal may be started before the mold M is clamped. Next, the ladle 31 is moved from the drawing position to the standby position. Next, the pellet supply device 100b (a pellet supply unit 41 to be described later) advances from the retracted position to the advanced position, discharges the pellet L from the discharge port 41b of the pellet supply device 100b, and enters the injection sleeve 21 from the pouring port 21a. Pellets L are supplied to Next, the pellet supply device 100b (pellet supply unit 41) moves backward from the forward movement position to the backward movement position. Next, the ladle 31 of the pouring device 100d moves from the standby position to the pouring position. Then, the pouring device 100d performs pouring.

  Here, the drawing position is the position of the ladle 31 of the pouring device 100d when the molten metal is drawn from the melting furnace F. The ladle 31 located at the drawing position is arranged deviating from the upper side of the pouring port 21 a of the injection sleeve 21. Here, the fact that the ladle 31 deviates from the upper side of the pouring port 21 a of the injection sleeve 21 means that the ladle 31 overlaps with the pouring port 21 a of the injection sleeve 21 from the position where the ladle 31 overlaps the pouring port 21 a of the injection sleeve 21 in the vertical direction. It means that it moves to a position where it does not overlap (side of the injection sleeve 21).

  The pouring position is the position of the ladle 31 when pouring the injection sleeve 21 with the ladle 31. The ladle 31 located at the pouring position is disposed above (position just 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. It is a position where the ladle 31 is temporarily kept in front of the pouring port 21a so that it does not collide with the (raddle 31). The ladle 31 located at the standby position and the ladle 31 located at the pouring position are arranged at substantially the same height.

  The drawing position, the standby position, and the pouring position are arranged in substantially the same straight line in the horizontal direction. Further, the standby position is a position closer to the pouring position than the drawing position. That is, the standby position is a position closer to the pouring position than an intermediate position between the drawing 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, as 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 drawing position and the pouring position. The standby position is such that the pellet supply unit 41 and the ladle 31 at the forward position do not interfere (collision), and the pouring is performed up to an allowable limit considering the influence of the heat of the ladle 31 on the pellet supply unit 41 at the forward position. In this case, the distance D1 may be equal to or less than one third of the distance D2.

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

  On the other hand, the retreat position is a position where the pellet supply unit 41 is arranged in a period before and after the supply of the pellet L (a period before and after the pellet supply unit 41 is positioned at the advance position). That is, the retreat position is a position where the pellet supply unit 41 is disposed outside the pellet L supply period, and is a position where the pellet supply device 100b is retracted during pouring so as not to collide with the pouring device 100d. It is. The pellet supply device 100b located at the retracted position is disposed so as to deviate from the upper side of the pouring port 21a of the injection sleeve 21.

(Configuration of die casting machine)
A die cast molding machine 100c according to this embodiment shown in FIG. 1 is a cold chamber type molding machine. The die casting machine 100c includes a fixed die plate 11, a movable die plate 12, a plurality of tie bars 13 extending in parallel to each other, a die plate driving mechanism 14, an injection device 15, and a main control unit 16. The main control unit 16 is an example of a “die casting side control unit” in the claims.

  A fixed die M1 on the fixed side is attached to the fixed die plate 11. The moving die plate 12 is attached with a moving mold M2 on the moving side. 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 movable mold M2 is brought close to the fixed mold M1 by the die plate driving mechanism 14, the molded product is formed between the inner surface of the fixed mold M1 and the inner surface of the movable mold M2. A cavity (hollow portion) M3 is formed. Further, the cavity M3 communicates with the injection sleeve 21 via a runner M4 serving as a flow path for 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. An 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 fixed mold M1.

  The injection sleeve 21 is configured to heat and vaporize (melt) the supplied pellet L. 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 21 a is formed on a part of the upper surface (Z1 side) of the injection sleeve 21. A plunger 22 is inserted into the X2 direction end (free end) of the injection sleeve 21 by fitting.

  The plunger 22 includes a linear rod-shaped plunger rod 22a extending in the X direction and a plunger tip 22b attached to the end of the plunger rod 22a on the X1 direction side. The 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 22 b is fitted to the inner peripheral surface of the injection sleeve 21.

  The plunger tip 22b is configured to be slid in the X1 direction by the injection device 15 via the plunger rod 22a. The injection device 15 is configured to inject the molten metal into the mold M (cavity M3) clamped through the runner M4 by moving the plunger tip 22b in the X1 direction.

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

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

  Specifically, as shown in FIG. 3, the main control unit 16 is configured to perform control to pump the molten metal from the melting furnace F at the pumping position by the hot water pouring device 100 d (the ladle 31). Moreover, the main control part 16 is comprised so that the pouring apparatus 100d (laddle 31) may be controlled to move from the molten metal pumping position to the standby position.

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

  Further, the main control unit 16 is configured to stop (standby) the pouring device 100d at the standby position when the 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 and supply the pellet L to the injection sleeve 21 based on the standby position signal Q1.

  As shown in FIG. 5, the main controller 16 starts from the standby position of the ladle 31 to the pouring position based on the fact that the pellet supply device 100b has reached the retracted position after starting to retract from the advanced position to the retracted position. The motor 32a, which will be described later, is controlled so as to start the movement. The motor 32a is an example of the “ladle drive unit” in the claims.

  Specifically, as shown in FIG. 6, the main control unit 16 sends a predetermined signal (retreat position signal Q2) indicating that the pellet supply apparatus 100b has retreated from the advance position to the retreat position. When receiving from the unit 47), the motor 32a controls the pouring device 100d (the ladle 31) to move from the standby position to the pouring position. That is, the reverse position signal Q2 is a trigger signal for starting the movement of the pouring device 100d from the standby position to the pouring position.

  As described above, when the ladle 31 reaches the standby position, the main control unit 16 transmits the standby position signal Q1 to the pellet supply device 100b and until the backward position signal Q2 is received from the pellet supply device 100b. The ladle 31 is made to wait. That is, the main control unit 16 deviates from the upper side of the pouring port 21a from the advance position where the pellet L is supplied to the pouring port 21a by the pellet feeding device 100b and the pellet feeding device 100b is disposed above the pouring port 21a. The motor 32a is configured to be controlled so that the ladle 31 is stopped at the standby position until the start of the backward movement to the disposed backward position.

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

  The pouring device 100 d includes a ladle 31, an arm portion 32, and a pouring device body 33.

<Composition of ladle>
The ladle 31 is a member for scooping molten metal and has a handle shape. The ladle 31 is provided with a shaft member 31a, a motor 31b, and an encoder 31c. The ladle 31 is attached to the arm portion 32 via a shaft member 31a. Further, the ladle 31 is configured to be tiltable by rotating around the shaft member 31a.

  The motor 31b is configured to rotate (tilt) the ladle 31 with respect to the shaft member 31a. And the motor 31b is comprised so that it may pour molten metal by the ladle 31 and may pour it by changing the inclination angle of the ladle 31. The motor 31b is disposed in the pouring device main body 33, and is connected to the shaft member 31a via a power transmission member (not shown) such as a chain belt so that the ladle 31 can be rotated.

  The encoder 31c is configured to detect the driving amount of the motor 31b. The main control unit 16 can grasp the inclination angle of the ladle 31 by acquiring the detection 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 and adjust the inclination angle of the ladle 31. The ladle 31 is held substantially horizontally so that the molten metal does not leak except when the molten metal is pumped and poured.

<Arms configuration>
The arm part 32 has a plurality of joint parts. A pouring device body 33 is connected to one end of the arm portion 32. A ladle 31 is attached to the other end of the arm portion 32 via a shaft member 31a. The arm portion 32 is provided with a motor 32a and an encoder 32b. The motor 32a is configured to move the ladle 31 between the drawing position and the pouring position.

  Specifically, the motor 32a (main control unit 16) is configured to move the ladle 31 in this order to the drawing position, the standby position, and the pouring position in the pouring operation until the molten metal is drawn and poured. Has been. The motor 32a is arrange | positioned in the pouring apparatus main body 33, and is comprised so that the arm part 32 may be driven via power transmission members (not shown), such as a chain belt. After pouring, the motor 32a (main control unit 16) is configured to move the ladle 31 from the pouring position to the drawing position by the arm portion 32.

  The encoder 32b is configured to detect the drive amount of the motor 32a. The main control unit 16 is configured to be able to grasp the movement amount and 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 moving amount and moving speed of the arm unit 32. .

  The pouring device 100d is configured so that the encoder 32b grasps the position of the arm portion 32 (the ladle 31) to pour hot water at the pouring position and does not spill molten metal from the pouring port 21a. Moreover, the arm part 32 is comprised so that the ladle 31 may be hold | maintained in the substantially same height position between a standby position and the pouring position.

(Configuration of pellet feeder)
As shown in FIG. 2, the pellet supply apparatus 100b is processed into a pellet shape (particle shape) 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 formed pellet L is configured to be supplied into the injection sleeve 21. Here, as pellet L, what granulated the mixture of wax and graphite is mentioned, for example. Note that the pellet L has a mold release agent that is attached to the inner surface of the mold M in advance when urged to release the die-cast product from the mold M (see FIG. 1) after injecting the molten metal in addition to the lubricating component. Multifunctional composite pellets containing these components are also included. Moreover, although it is an example, the pellet L has a particle size of about 1 mm. In addition, although it is an example, the melting temperature of the pellet L is about 100 degreeC. Moreover, the temperature of the ladle 31 containing a molten metal is about 300 degreeC.

  The pellet supply device 100b includes a pellet supply unit 41, an air supply source 42, a pellet weighing unit 43, an advancing / retreating cylinder 44, a forward limit switch 45, a backward limit switch 46, and a controller 47. ing. The advancing / retreating cylinder 44 is an example of a “supply unit driving unit” in the claims. The forward limit switch 45 is an example of the “forward position sensor” in the claims. The backward limit switch 46 is an example of the “reverse position sensor” in the claims.

<Configuration of air supply source>
The air supply source 42 is configured to supply the conveying air A1, the forward air A2, and the backward air A3 to the pellet supply unit 41 and the forward / backward cylinder 44, respectively. The air supply source 42 is configured to pressure-feed a predetermined amount of pellets L measured by the pellet weighing unit 43 toward the pellet supply unit 41 (Y2 direction) together with the transfer air A1.

<Configuration 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 before pouring by the pouring device 100d under the control of the control unit 47. Moreover, the pellet supply part 41 is arrange | positioned facing the pouring apparatus 100d on both sides of the injection sleeve 21. As shown in FIG. The pellet supply unit 41 generally has a cylindrical shape extending in the Y direction.

<Configuration of pellet supply unit and pellet weighing unit>
In the state where the ladle 31 of the pouring device 100d is located at the pouring position, the pellet supply unit 41 is in a state where the tip 41a provided with the discharge port 41b of the pellet supply unit 41 reaches the advance position. Is arranged at a position where it collides with the ladle 31 of the hot water pouring device 100d. That is, the ladle 31 at the pouring position and the pellet supply unit 41 at the forward position overlap each other spatially. The end of the pellet supply unit 41 opposite to the tip 41 a is connected to the air supply source 42.

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

  Specifically, as shown in FIG. 7, the tip end portion 41a has an L shape when viewed from the X direction, and a discharge port 41b for discharging the pellet L is provided at the lower end. Further, an L-shaped and plate-shaped air bleeding member 411 is installed at the distal end portion 41a. The air bleeding member 411 is installed so as to straddle the end surface of the tip portion 41a from the Y2 direction end surface to the Z1 direction end surface. The air vent member 411 is provided with a plurality of air vent holes 412. The air vent hole 412 has a function of discharging the transfer air A1 to the outside of the pellet supply unit 41. Further, the Y2 direction end surface (including the air bleeding member 411) of the tip end portion 41a 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 conveying air A1 and the pellet L. The air vent member 411 has a function of preventing the pellet L from being discharged from the discharge port 41b by the transfer air A1 by suppressing the transfer air A1 from moving toward the discharge port 41b. Thereby, it is suppressed that the pellet L leaks (spills) from the pouring port 21a.

  The plurality of air vent holes 412 provided on the end surface in the Y2 direction of the distal end portion 41a have an oval shape extending in the vertical direction, and are arranged in a plurality of rows in the vertical direction and the horizontal direction. The plurality of air vent holes 412 provided on the end surface in the Z1 direction of the tip portion 41a have an oval shape extending in the Y direction, and are arranged in a plurality of rows in the X direction and the Y direction. The air vent 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 vent hole 412 has a size in the longitudinal direction of about 4 mm and a size (width) in the short side direction of about 0.8 mm. The air vent hole 412 is configured in such a size and shape that the pellet L having a particle diameter of about 1 mm exemplified above does not pass through and does not fit therein.

  Here, generally, when the tip 41a of the pellet supply unit 41 is exposed to a high temperature, the pellet L passing through the tip 41a dissolves, and the pellet L fits into the air vent hole 412. The pellet L may clog the tip 41a.

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

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

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

  Specifically, the forward / backward cylinder 44 receives the forward air A2 from the air supply source 42, whereby the discharge port 41b of the pellet supply unit 41 moves backward from the pouring port 21a of the injection sleeve 21 in the vertical direction. It is comprised so that it may advance from the position to the advance position facing the pouring port 21a of the injection sleeve 21. When the pellet supply unit 41 is located at the forward movement position, the pellet L can be supplied from the discharge port 41b to the pouring port 21a by dropping. The advance / retreat cylinder 44 is configured to retract the pellet supply unit 41 from the advance position to the retract position by receiving supply of the retract air A3 from the air supply source 42.

<Configuration of forward limit switch>
The forward limit switch 45 is configured to be able to detect that the pellet supply unit 41 is located at the forward 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 reverse limit switch>
The retreat limit switch 46 is configured to detect that the pellet supply unit 41 is located at the retreat position. Therefore, the backward limit switch 46 is configured to be able to detect that the pellet supply unit 41 has reached the backward position.

<Configuration of control unit>
As shown in FIG. 9, the control unit 47 is configured to obtain the forward position signal Q3 and the backward position signal Q2 from the forward limit switch 45 and the backward limit switch 46, respectively. The control unit 47 is configured to be able to control the driving of the air supply source 42 and the driving of the pellet weighing unit 43, respectively. The control unit 47 is configured to transmit and receive predetermined signals to and from the main control unit 16.

  The controller 47 advances the pellet feeder 41 from the retracted position to the advanced position based on the fact that the main controller 16 has reached the standby position after the pouring device 100d starts moving from the drawing position to the standby position. The advancing / retreating cylinder 44 is configured to start.

  Specifically, when the standby position signal Q1 indicating that the hot water pouring device 100d has reached the standby position from the pumping position is received from the main control section 16, the controller 47 advances from the air supply source 42. The air A <b> 2 is configured to be supplied to the advance / retreat 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 a forward position signal Q3 indicating that the pellet supply unit 41 has reached the forward position from the forward limit switch 45 (that the pellet supply unit 41 has reached the forward position by the forward limit switch 45). Is detected), the air L1 is conveyed from the air supply source 42 toward the pellet supply unit 41, so that the pellet L is pumped to the pellet supply unit 41. Thereby, the pellet L is discharged from the pellet supply part 41, and the pellet L is supplied in the injection sleeve 21 from the pouring port 21a.

  In addition, the control unit 47 measures the pellet L by the pellet measuring unit 43 in a period after the pellet supply of the previous cycle until the advance limit switch 45 of the next cycle detects the advance position, The measured pellet L is arranged in advance at a predetermined position where it can be pumped by the air A1 for conveyance. In short, the control unit 47 is configured to perform control for measuring and preparing the pellet L so that the pellet L can be supplied immediately when the advance position signal Q3 is acquired.

  The controller 47 is configured to control the advancing / retreating cylinder 44 so that the pellet supply unit 41 moves back to the retracted position during a period when the 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 backward air A3 from the air supply source 42 to the forward / backward cylinder 44. As a result, the pellet supply unit 41 retreats from the advance position to the retract position.

  Here, the timing at which the control unit 47 starts to retract the pellet supply unit 41 may be, for example, after a predetermined time has passed since the supply air A1 was supplied from the air supply source 42, or the pellet supply unit 41 has moved forward. It may be after a predetermined time has elapsed since reaching the position.

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

  As described above, the control unit 47 performs the control to supply the pellet L to the pouring port 21a of the injection sleeve 21 while the pouring device 100d (the ladle 31) is stopped at the standby position, and also supplies the pellet. The forward / backward movement cylinder 44 is controlled so as to start the backward movement of the portion 41 from the forward movement position to the backward movement position.

  Moreover, the control part 47 supplies pellet L by supplying the pellet L and starting the retreat to the retreat position of the pellet supply part 41 during the period when the pouring device 100d (the ladle 31) is stopped at the standby position. Control is performed to avoid the tip 41a (see FIG. 6) of the portion 41 from colliding with the ladle 31.

(Moving timing of the pouring device and pellet feeder)
Next, with reference to FIGS. 2-6, the timing of the movement with time passage (time change) of the pouring device 100d (the ladle 31) and the pellet supply unit 41 (the pellet supply device 100b) will be described. In the following description, FIG. 10 is referred to for the times t1 to t6.

  As described above, the movements of the pouring device 100d and the pellet supply unit 41 are the first arrangement state (initial state), the second arrangement state, the third arrangement state, the fourth arrangement state, and the second arrangement shown in FIGS. It is performed in the order of the five arrangement states.

  As shown in FIG. 2, a state where the ladle 31 is located at the drawing position and the pellet supply unit 41 is located at the retracted position is referred to as a 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 ladle 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 transfer air A1. Suppose there is.

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

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

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

  And the pellet supply part 41 reaches | attains an advance position at the time t3 like the 3rd arrangement | positioning state shown in FIG.

  Then, according to the advance position signal Q3, the pellet L is supplied into the injection sleeve 21 by the pellet supply device 100b during the period from the arrival of the pellet supply unit 41 to the advance position (time t3) to the time t4.

  Then, at a time t4 after the completion of the supply of the pellet L, the pellet supply unit 41 starts to move backward from the forward position to the backward position.

  And the pellet supply part 41 reaches | attains a retreat position at the time t5 like the 4th arrangement | positioning state shown in FIG.

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

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

  The die casting molding system 100 advances the pellet supply unit 41, supplies pellets L to the injection sleeve 21, and supplies the pellets L to the injection sleeve 21 during a period from time t2 to time t5 when the pouring device 100d (laddle 31) is stopped at the standby position. The pellet supply unit 41 is configured to be retracted. In addition, the die casting system 100 moves the pouring device 100d (the ladle 31) during the period from the initial state where 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-cast molding system 100 is configured not to move the pouring device 100d (laddle 31) and the pellet supply device 100b (pellet supply unit 41) at the same time.

(Process for pouring and pellet supply by the main controller)
Next, with reference to FIG. 11, the process for the pouring and pellet supply by the main control part 16 is demonstrated based on a flowchart. Refer to FIG. 1 for each configuration used in the following description.

  First, in step S <b> 1, the main control unit 16 performs control to draw a predetermined amount of molten metal by the ladle 31 located at the drawing position.

  In step S2, the main control unit 16 starts moving the ladle 31 from the drawing position to the standby position. That is, the ladle 31 is moved in the direction approaching the injection sleeve 21 (Y1 direction).

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

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

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

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

  In step S6, the main control unit 16 starts to move the ladle 31 from the standby position to the pouring position.

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

  In step S8, the main control unit 16 performs pouring by the pouring device 100d.

(Processing for pouring and pellet supply by the control unit)
Next, with reference to FIG. 12, the process for the pouring and pellet supply by the control part 47 is demonstrated based on a flowchart. Refer to FIG. 1 for each configuration used in the following description.

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

  In step S12, the control unit 47 starts to advance the pellet supply unit 41 from the retracted position to the advanced position. That is, the pellet supply unit 41 is moved in the direction approaching the injection sleeve 21 (Y2 direction).

  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) is 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. If it is determined that the pellet supply unit 41 has reached the forward position, the process proceeds to step S14.

  In step S <b> 14, the control unit 47 sends the pellet L together with the transfer air A <b> 1 supplied from the air supply source 42 to the tip end portion 41 a of the pellet supply unit 41. And the pellet L is discharged from the discharge port 41b, and the pellet L is supplied in the injection sleeve 21 from the pouring port 21a.

  In step S15, the pellet supply unit 41 starts to retract from the advance position to the retract position. That is, the pellet supply unit 41 is moved in a direction away from the injection sleeve 21 (Y1 direction).

  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 reverse position signal Q2 is acquired from the reverse limit switch 46. If it is not determined that the pellet supply unit 41 has reached the retracted position, step S16 is repeated. If it is determined that the pellet supply unit 41 has reached the retracted position, the process proceeds to step S17.

  In step S <b> 17, the control unit 47 transmits the backward position signal Q <b> 2 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 during the period when the pouring device 100d is stopped at the standby position located between the pumping position and the pouring position. In addition, the forward / backward movement cylinder 44 is controlled so that the pellet supply unit 41 starts to move backward from the forward movement position to the backward movement position. As a result, the pellet supply unit 41 supplies the pellet L to the pellet supply unit 41 during the period when the pouring device 100d is stopped (standby) at the standby position that is away from the pouring position to the drawing position side. Can be retreated. For this reason, when the pellet L is supplied by the pellet supply device 100b as in the prior art, the pellet L is supplied as compared with the case where the hot water injection device 100d (the ladle 31) that scoops the molten metal is located at the pouring position. In addition, it is possible to suppress 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, since the pellet L can be prevented from being softened, the pellet supply unit 41 can be prevented from being clogged with the pellet L. Further, the pellet supply device 100b does not draw the molten metal after the pellet L is supplied and moves the pouring device 100d from the drawing position to the pouring position. Since it can be made to stand by at the stand-by position near a pouring position, cycle time can be shortened. As described above, clogging of the pellet supply unit 41 (pellet supply device 100b) by 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 drawing position to the standby position, the controller 47 starts to advance the pellet supply unit 41 from the retracted position to the advanced position. Thus, the forward / backward moving cylinder 44 is controlled. Thereby, since the molten metal is drawn up, the pouring device 100d moved at a lower speed than the pellet supply device 100b can be moved toward the pouring port 21a before the pellet supply device 100b. The hot water pouring device 100d can reach the pouring position at an early stage after the supply.

  Further, in the present embodiment, as described above, after the pouring device 100d starts moving from the drawing position to the standby position, the control unit 47 reaches the standby position based on the fact that the pellet supply unit 41 has reached the standby position. The forward / backward movement cylinder 44 is configured to be controlled so as to start advancement from the reverse position to the forward position. Thereby, since the advance of the pellet supply part 41 can be started in the state where the pouring device 100d has reached the standby position for stopping the pouring device 100d, the pellets can be reliably stopped while the pouring device 100d is stopped. The supply part 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 pouring device 100d.

  Further, in the present embodiment, as described above, the controller 47 sets the advance / retreat cylinder 44 so that the pellet supply unit 41 moves back to the retracted position during the period when the pouring device 100d is stopped at the standby position. Configure to control. Thereby, since 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, the pellet supply unit 41 stops in the middle of the retreat position from the advance position. Even if it is a case, it can prevent that the pouring apparatus 100d collides with the pellet supply part 41. FIG.

  Moreover, in this embodiment, while arrange | positioning the pellet supply part 41 facing the pouring apparatus 100d on both sides of the injection sleeve 21, as mentioned above, the front-end | tip part 41a in which the discharge outlet 41b of the pellet supply part 41 is provided. Is configured to be disposed at such a position that the front end 41a collides with the ladle 31 of the pouring device 100d, and the controller 47 is stopped at the standby position. During this period, the pellet L is supplied, and the pellet supply unit 41 starts to retract to the retracted position, so that the tip 41a of the pellet supply unit 41 is prevented from colliding with the ladle 31. Configure. Thereby, in order to avoid the collision (interference) between the ladle 31 of the pouring device 100d and the pellet supply unit 41 as in the prior art, the ladle 31 is placed above the pellet supply unit 41 and the pellet supply unit 41. Since the ladle 31 can be disposed in the vicinity of the pouring port 21a in the height direction as compared with the case where the ladle 31 is disposed in the vicinity of the pouring portion, it is possible to prevent the molten metal from leaking from the pouring port 21a during pouring. be able to.

  Further, in the present embodiment, as described above, the retreat limit limit switch 46 that detects that the pellet supply unit 41 is located at the retreat position, and the advance limit limit that detects that the pellet supply unit 41 is located at the advance position. And a switch 45. As a result, it is possible to reliably detect that the pellet supply unit 41 has reached the retreat position by the retreat limit switch 46. Therefore, by moving the pellet supply unit 41 toward the pouring position after retreating, pellet supply Collision between the portion 41 and the pouring device 100d can be avoided. In addition, since the advance limit switch 45 can reliably detect that the pellet supply unit 41 has reached the advance position, the timing at which the pellet L is supplied by the pellet supply unit 41 can be appropriately determined. Thereby, it can suppress that the pellet L leaks from the pouring port 21a.

  Further, in the present embodiment, as described above, the control unit 47 supplies the pellet L during the period in which the pouring device 100d is stopped at the standby position that is closer to the pouring position than the pumping position, The pellet supply unit 41 is configured to perform control to start the retreat to the retreat position. Thereby, compared to the case where the standby position is closer to the pumping position than the pouring position, the pouring apparatus 100d can be kept waiting at a position closer to 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. For this reason, it can suppress that the temperature of a molten metal falls.

  In the present embodiment, as described above, the main controller 16 starts the movement of the ladle 31 from the standby position to the pouring position after the pellet supply device 100b starts moving backward from the forward movement position to the backward movement position. Thus, the motor 32a is configured to be controlled. Thereby, since the pellet supply apparatus 100b located above the pouring port 21a can be moved (retracted) earlier than the pouring apparatus 100d, the pouring moved toward the pouring position above the pouring port 21a. It is possible to suppress the device 100d (the ladle 31) from colliding with the pellet supply device 100b. Moreover, since it can suppress that the pouring apparatus 100d (laddle 31) approaches the pellet supply apparatus 100b, it can suppress that the pellet L in the pellet supply apparatus 100b is heated. As a result, clogging of the pellet supply device 100b with the pellet L can be effectively suppressed.

  In the present embodiment, as described above, the main control unit 16 waits for the ladle 31 based on the fact that the pellet supply device 100b has reached the retracted position after starting to retract from the advanced position to the retracted position. The motor 32a is controlled to start moving from the position to the pouring position. Thereby, since the movement of the pouring device 100d to the pouring position can be started in a state in which the pellet feeding device 100b is securely retracted from the upper side of the pouring port 21a, the pellet feeding device 100b and the pouring device 100d can be started. Can be reliably prevented.

  In the present embodiment, as described above, the standby position is a position closer to the pouring position than the drawing position. Thereby, compared to the case where the standby position is closer to the pumping position than the pouring position, the pouring apparatus 100d can be kept waiting at a position closer to 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. For this reason, it can suppress that the temperature of a molten metal falls.

[Modification]
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the said embodiment, the example which controlled the cylinder 44 for advance / retreat so that the advance of the pellet supply part 41 was started by the control part 47 based on having reached the standby position for the pouring apparatus 100d was shown. However, the present invention is not limited to this. In the present invention, the advancing / retreating cylinder 44 may be controlled by the control unit 47 so that the pellet supply unit 41 starts to advance before the pouring device 100d reaches the standby position.

  Moreover, in the said embodiment, the example which controlled the cylinder 44 for advancing / retreating by the control part 47 so that the pellet supply part 41 was retracted to a retreat position by the control part 47 during the period when the pouring apparatus 100d has stopped in the standby position is shown. However, the present invention is not limited to this. In the present invention, during the period when the pouring device is stopped at the standby position, the control unit 47 controls the advance / retreat cylinder 44 so that the pellet supply unit 41 starts to retreat to the retreat position. The movement of the hot water device 100d from the standby position may be started.

  Moreover, in the said embodiment, although the standby position signal Q1 which shows that the pouring apparatus 100d reached | attained the standby position was made into a trigger, the example which started advance from the retreat position of the pellet supply apparatus 100b to the advance position was shown. The present invention is not limited to this. In the present invention, for example, based on the start of movement of the pouring device 100d from the drawing position to the standby position, the pellet supply device 100b may start to advance from the retracted position to the advanced position.

  Moreover, in the said embodiment, the example which started the movement to the pouring position from the stand-by position of the pouring apparatus 100d by using the backward position signal Q2 which shows that the pellet supply apparatus 100b reached the backward position as a trigger was shown. However, the present invention is not limited to this. In the present invention, for example, the advance of the pouring device 100d from the standby position to the pouring position may be started based on the start of movement of the pellet supply device 100b from the advance position to the retract position.

  Moreover, in the said embodiment, although the pouring apparatus 100d was arrange | positioned to the one side of the Y direction of the injection sleeve 21, and the pellet supply apparatus 100b was arrange | positioned to the other side, this invention is not limited to this. In the present invention, the arrangement of the pouring device 100d and the pellet supply device 100b is not limited to the example of the above-described embodiment, for example, the pouring device 100d and the pellet supply device 100b are arranged on one side of the injection sleeve 21 in the Y direction.

  Moreover, in the said embodiment, although the standby position was shown as the position closer to the pouring position than the drawing position, the present invention is not limited to this. In the present invention, the standby position may be closer to the pumping position than the pouring position.

  Moreover, in the said embodiment, although the example which driven the pouring apparatus 100d with the motors 31b and 32a was shown, this invention is not limited to this. In the present invention, the pouring device 100d may be driven by a driving source other than the motors 31b and 32a such as an air cylinder.

  Moreover, in the said embodiment, although the ladle 31 of the pouring position and the pellet supply part 41 of the advance position were arrange | positioned in the position which mutually overlaps, this invention is not limited to this. In the present invention, for example, the ladle 31 at the pouring position is spaced above the pellet supply unit 41 at the advance position so that the ladle 31 at the pouring position and the pellet supply part 41 at the advance position do not spatially overlap each other. May be spaced apart.

  Moreover, in the said embodiment, although the back position sensor and the forward position sensor of this invention showed the example comprised by the limit switch, this 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 type optical sensor or the like.

  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 processing is performed in order along the processing flow. However, the present invention is not 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 performed by a complete event drive type or a combination of event drive and flow drive.

16 Main control unit (Die-casting side control unit)
21 Injection sleeve 21a Pouring port 31 Ladle 32a Motor (Ladle drive part)
41 Pellet supply unit (lubricant supply unit)
41a Tip portion 41b Discharge port 44 Retracting cylinder
45 Forward limit switch (forward position sensor)
46 Reverse limit switch (reverse position sensor)
47 Control unit (Supply device side control unit)
100 Die Casting System 100a Die Casting Device 100b Pellet Supply Device (Lubricant Supply Device)
100c Die-cast molding machine 100d Pouring device F Melting furnace L Pellet (solid lubricant)
M mold

Claims (12)

A lubricant supply unit that includes a solid lubricant discharge port and supplies the solid lubricant to the pouring port of the injection sleeve before pouring by the pouring device;
The lubricant is in a forward position where the discharge port is disposed above the pouring port, and the solid lubricant is discharged from the discharge port, and in a retracted position where the discharge port is deviated from above the pouring port. A supply unit drive unit for moving the supply unit forward and backward, and
A supply device side control unit for controlling the supply of the solid lubricant to the pouring gate and the drive of the supply unit drive unit,
The supply device side control unit is a period in which the pouring device is stopped at a standby position between a pouring position where the molten metal is pumped by the pouring device and a pouring position where pouring is performed by the pouring device. In addition, it is configured to control supply of the solid lubricant to the pouring port, and to control the supply unit drive unit so as to start the lubricant supply unit from retreating from the advance position to the retreat position. A lubricant supply device.   The supply device side control unit starts the advance of the lubricant supply unit from the retracted position to the advanced position after the pouring device starts moving from the pumping position to the standby position. The lubricant supply device according to claim 1, wherein the lubricant supply device is configured to control the supply unit driving unit.   The supply device side control unit is configured to start from the retracted position of the lubricant supply unit based on the fact that the pouring device has reached the standby position after starting the movement from the drawing position to the standby position. The lubricant supply device according to claim 2, wherein the supply unit is configured to control the supply unit drive unit so as to start the advance to the advance position.   The supply device side control unit is configured to control the supply unit driving unit so that the lubricant supply unit is retracted to the retracted position during a period in which the pouring device is stopped at the standby position. The lubricant supply device according to any one of claims 1 to 3, wherein The lubricant supply unit is disposed to face the pouring device across the injection sleeve, and when the tip of the lubricant supply unit where the discharge port is provided has reached the advance position, The tip is configured to be arranged at a position where it collides with the ladle of the pouring device,
The supply device-side control unit supplies the solid lubricant during a period in which the pouring device is stopped at the standby position, and starts the retraction of the lubricant supply unit to the retreat position. The lubricant supply apparatus of any one of Claims 1-4 comprised so that control which avoids the said front-end | tip part of a lubricant supply part colliding with the said ladle may be performed. A retreat position sensor for detecting 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 an advance position sensor that detects that the lubricant supply unit is positioned at the advance 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, wherein the lubricant supply device is configured to perform control for starting retreat to the retreat position. A die casting device that pours into a pouring port of an injection sleeve after supplying a solid lubricant by a lubricant supply device,
A die-casting machine including the injection sleeve having the pouring spout and to which a mold is attached;
A ladle that pumps the molten metal from the melting furnace, a pumping position where the ladle pumps the molten metal from the melting furnace, a pouring position where the ladle is disposed above the pouring port, and the pumping position and the pouring position. A pouring device including a ladle drive unit that moves the ladle to a standby position located between,
A die cast side control unit for controlling the driving of the ladle driving unit,
The die-casting control unit is configured so that a solid lubricant is supplied to the pouring port by the lubricant supplying device, and the lubricant supplying device is disposed from above the pouring port from an advanced position, from above the pouring port. A die casting apparatus configured to control the ladle driving unit so that the ladle is stopped at the standby position during a period until the start of the backward movement to the backwardly arranged backward position.   The die cast side control unit is configured to start the movement of the ladle from the standby position to the pouring position after the lubricant supply device starts moving from the forward position to the backward position. The die casting apparatus according to claim 8, wherein the die casting apparatus is configured to control the driving unit.   The die cast side control unit is configured to start from the forward position to the reverse position after the lubricant supply device has reached the reverse position, and then from the standby position of the ladle to the pouring position. The die casting apparatus according to claim 9, wherein the die casting apparatus is configured to control the ladle driving unit so as to start movement to a position.   The die casting apparatus according to any one of claims 8 to 10, wherein the standby position is a position closer to the pouring position than the drawing position. A die-casting machine including an injection sleeve having a pouring spout and to which a mold is attached;
A lubricant supply unit that has a solid lubricant discharge port and supplies the solid lubricant to the pouring port, and the discharge port is disposed above the pouring port and advances forward to discharge the solid lubricant from the discharge port A lubricant supply device including a position and a supply portion drive section that moves the lubricant supply section forward and backward to a retreat position in which the discharge port is disposed to deviate from above the pouring port;
A ladle that draws molten metal from the melting furnace, a pumping position where the ladle pumps molten metal from the melting furnace, a pouring position where the ladle is located above the pouring port, and a position between the pouring position and the pouring position A ladle drive unit that moves the ladle forward and backward at the standby position, and after supplying the solid lubricant by the lubricant supply device,
Provided in the die-cast molding machine, comprising a control means for controlling the lubricant supply device and the pouring device,
The control means moves the ladle from the drawing position to the standby position, controls the ladle driving unit to stop the ladle at the standby position, and stops the ladle at the standby position. The supply unit drive unit performs control to supply a solid lubricant to the pouring port by the lubricant supply device during a period of time and to start retreat of the lubricant supply unit from the advance position to the retreat position. A die-casting system configured to control.

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