JP2016215232A - Bead input device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bead input device capable of advantageously inputting a solid bead including a lubrication component in a molten metal supply sleeve, and capable of space-saving while checking overheat of a constitution member.SOLUTION: A bead input device 24 is constituted so that a transfer pipe 48 and air bleeding means 52 are installed in a vertically movable shuttle 54, and the shuttle 54 is liftably or rotatably operated above a molten metal supply sleeve 14, and in a descent end position of the shuttle 54, a dropping port 84 provided in the air bleeding means 52 is caused to approach a down gate 38 of the molten metal supply sleeve 14, and a bead dropped from the dropping port 84 is inputted in the down gate 38.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a bead loading device, and more particularly to a bead loading device having an improved structure for advantageously loading solid beads containing a lubricating component into a molten metal supply sleeve.

  Conventionally, a die casting method is well known as one of methods for casting a precise casting (metal casting). A cold chamber which is one of casting apparatuses used in such a die casting method. In a die casting machine of the type, after a predetermined amount of molten metal such as aluminum pumped by a ladle is supplied to a sleeve (also called a shot sleeve) for each casting cycle, the molten metal in the sleeve Is injected into the molding cavity of the mold at a high speed and a high pressure by a plunger (also called a shot piston or a chip), whereby a target cast product is molded.

  By the way, in such a cold chamber type die casting machine, various lubricants are used for lubricating the sleeve and the plunger, and a predetermined amount thereof is supplied into the sleeve every casting (molding) cycle. However, among them, in recent years, pellet-shaped solid lubricants (beads) are increasingly used because they are easy to handle and preferable in the working environment.

  As one of devices for supplying such beads into the sleeve, the applicant of the present application disclosed the following bead dispenser in Utility Model Registration No. 3193143 (Patent Document 1). Yes. That is, in such a bead dispenser, the forward position where the beads are discharged from the bead discharge portion into the molten metal supply sleeve and the retracted position where the bead discharge portion is separated from the molten metal supply sleeve are spaced apart in the horizontal direction. And a shuttle that can reciprocate between them, a bead discharge section attached to the shuttle, and a metal housed in a ladle with such a shuttle moved to the retracted position. By pouring the molten metal into the pouring port of the molten metal supply sleeve, the bead discharge part and the ladle interfere (collision), or the molten metal is sprinkled on the bead discharge part, etc., and the device itself is damaged. This is advantageously avoided.

  In addition, in the bead dispenser having such a structure, moving the shuttle to the retracted position is not limited to the above purpose, but a part of the bead dispenser (component member; transfer pipe, bead discharge section, etc.) It also has the purpose of preventing overheating due to the heat of the molten metal. Otherwise, a part of the bead dispenser is heated by the heat of the sleeve or the like, and the inner surface thereof is higher than the melting point of the bead. Due to the high temperature, the supplied beads are welded, and there is a problem that it is difficult to supply a predetermined amount of beads. As a result, the problem that the supply of beads becomes impossible is caused.

Utility Model Registration No. 3193143

  However, in any of such conventionally proposed bead loading apparatuses, since the shuttle is movable in the horizontal direction, in order to arrange such a bead loading apparatus, The problem is that a large space is required in the horizontal direction around. In addition, when the die casting machine is disposed near the wall, or when a shielding cover or the like is disposed around the die casting machine as a countermeasure against backflush (melting of molten metal from the molten metal supply sleeve). There is a risk that the wall and the cover will be in the way, and a sufficient moving distance (stroke) of the shuttle cannot be secured, and the components of the bead throwing device will be overheated.

  Here, the present invention has been made in the background of such circumstances, and the problem to be solved is that solid beads containing a lubricating component can be advantageously introduced into a molten metal supply sleeve. It is another object of the present invention to provide a bead throwing device that can save space while preventing overheating of components.

  In the present invention, in order to solve the above-described problems, the solid beads transported in the transport pipe by the transport air are connected to the air venting means connected to one end of the transfer pipe. The at least part of the conveying air is guided and separated from the beads, and the beads are dropped from a dropping port provided in the air venting means to be provided in the molten metal supply sleeve of the die casting machine. In the bead pouring device configured to be poured into the pouring opening that opens to the outside, the transfer pipe and the air venting means are attached to a shuttle that can be moved up and down, and the shuttle is connected to the molten metal supply sleeve. By moving up and down or rotating upward, a drop port provided in the air venting means is opened at the lower end position of the shuttle. A bead charging device characterized in that the bead charging device is configured such that the beads that are dropped from the dropping port are placed in the pouring port close to the pouring port of the supply sleeve, and the basic configuration thereof. is there.

  In addition, according to one of the desirable embodiments of the bead input device according to the present invention, a flexible transport hose is connected to the other end of the transfer pipe, and the transport hose is The bead is transported into the transport pipe through the transport hose when the shuttle is positioned at the descending end position. It has become.

  In the present invention, it is preferable that the connection portion of the transfer pipe with the transport hose is bent so as to incline upward toward the connection end of the transfer pipe.

  Further, in the present invention, an air blow pipe adapted to clean the inside of the molten metal supply sleeve by blowing out compressed air is attached to the shuttle, and the air blow pipe includes the transfer pipe and the air. It is desirable to be able to move up and down together with the removing means.

  As described above, in the bead loading device according to the present invention, the transfer pipe and the air venting means are attached to the shuttle that can move up and down, and the shuttle moves up and down or rotates above the molten metal supply sleeve. Even if there are walls, shielding covers, etc. around the bead throwing device, it is possible to secure a sufficient stroke of the shuttle in the vertical direction, It is possible to prevent overheating of components such as the air venting means.

  Further, in the bead loading device according to the present invention, the space saving in the horizontal direction of the bead loading device is advantageous as compared with the bead loading device having the shuttle that is reciprocally movable in the horizontal direction as in the prior art. As a result, there is an advantage that it is possible to effectively realize the space saving of the entire die casting apparatus including the bead throwing apparatus according to the present invention.

It is a fragmentary sectional view showing an example of a die-casting device provided with a bead throwing device according to the present invention, and shows the state where a shuttle is located in a rising end position. FIG. 2 is a partial cross-sectional explanatory view taken in the direction of arrow A in FIG. 1. It is a fragmentary sectional view corresponding to FIG. 1, Comprising: The shuttle is located in the descent | fall end position. FIG. 3 is a partial cross-sectional explanatory view corresponding to FIG. 2, showing a state where the shuttle is located at a lower end position. FIG. 4 is an enlarged partial cross-sectional explanatory view of a B portion in FIG. 3 and shows a shuttle stroke adjusting mechanism. FIG. 4 is an enlarged partial cross-sectional explanatory view of a C portion in FIG. 3 and shows a form of a connection portion between a transfer pipe and a transfer hose. FIG. 4 is an enlarged partial cross-sectional explanatory view of a D part in FIG. 3, schematically showing a state in which beads are introduced into a molten metal supply sleeve. It is a fragmentary sectional view corresponding to FIG. 1 which shows another example of the bead injection device according to this invention. FIG. 4 is a partial cross-sectional explanatory view corresponding to FIG. 1 and showing another example of the bead charging device according to the present invention. It is a fragmentary sectional view corresponding to FIG. 2 which shows an example of the die-cast apparatus provided with the conventional bead injection device.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  First, FIG.1 and FIG.2 shows an example of the die-casting apparatus provided with the bead input device according to this invention. Accordingly, the die casting apparatus 10 pours a molten metal into a die casting machine 12 for performing die casting of a target casting product and a molten metal supply sleeve 14 (hereinafter also simply referred to as a sleeve 14) of the die casting machine 12. A pouring machine 16, a bead metering device 22 for measuring the amount of beads 20 required for lubrication between the sleeve 14 and the plunger 18, and a solid bead 20 containing a lubricating component in the sleeve 14 And a bead loading device 24.

  The die casting machine 12 used here is a cold chamber type die casting machine having the same basic structure as that of the prior art, and specifically, as shown in FIG. 1, a fixed platen 26 and a movable platen 28. Further, the attached molds (the fixed mold 30 and the movable mold 32) are clamped by the clamping cylinder 34, whereby a predetermined molding cavity 36 is formed between them. Yes. Such a molding cavity 36 communicates with the sleeve 14 through a runner and a gate. The sleeve 14 has a thick cylindrical shape, and a pouring hole 38 having a substantially rectangular hole shape in plan view that opens to the outside through the upper side portion behind the fixed platen 26 (right side in FIG. 1). Is formed. Furthermore, a plunger 18 is disposed in the sleeve 14, and an injection cylinder 40 for reciprocating the plunger 18 is disposed behind the plunger 18.

  Further, as shown in FIG. 2, the pouring machine 16 is disposed in the vicinity of the die casting machine 12 at a position separated from the sleeve 14, and a ladle 42 in which a molten metal to be die cast is accommodated. The ladle 44 has a handle shape, and the ladle 44 is operated (a pouring operation) via a robot arm 46 as an actuator, so that the molten metal enters the sleeve 14 through the pouring port 38. Will be supplied. The molten metal thus injected into the sleeve 14 is injected (press-fitted) into the forming cavity 36 at a high speed and a high pressure by the plunger 18, thereby forming a target cast product. It is like that.

  By the way, in such a die casting apparatus 10, for lubrication between the sleeve 14 and the plunger 18, a bead 20 that is a solid lubricant is supplied (introduced) into the sleeve 14 for each casting cycle. (See FIG. 7). Examples of the beads 20 used here include, for example, various types of known pellet-shaped solid lubricants that are commercially available, which are obtained by granulating a mixture of wax and graphite. For example, shot beads (SHOTBEADS) (registered trademark: manufactured by J & S Chemical) are used as appropriate, and beads 20 having a size of about 0.3 mm to 3 mm are generally used. It becomes.

  As shown in FIG. 1, a bead weighing device 22 and a bead loading device 24 are arranged in the die casting apparatus 10 in order to load the beads 20 into the sleeve 14. The apparatus 22 and the bead input apparatus 24 (the transfer pipe 48 mentioned later) are connected through the flexible tube 50 as a flexible conveyance hose. Therefore, since the bead weighing device 22 has a basic structure similar to that of the prior art, the detailed description thereof will be omitted here. In addition, a predetermined amount of beads 20 necessary for lubricating the sleeve 14 and the plunger 18 are weighed. The beads 20 are conveyed toward the bead loading device 24 through the flexible tube 50 by the conveyance air supplied from an air source (not shown).

  Such a bead loading device 24 has a metal pipe-shaped transfer pipe 48 that guides the beads 20 conveyed by the transfer air, and one end side of the transfer pipe 48 (the left end in FIG. 1). On the other hand, an air venting device 52 as an air venting means having a rectangular hollow block shape as a whole is connected to the other end side (the right end side in FIG. 1). A tube 50 is connected.

  Such a transfer pipe 48 is attached to a shuttle 54 that can be moved up and down. Specifically, the shuttle 54 includes a shuttle base 56 having a long rectangular flat plate shape, and clamp members 58 and 58 fixed to the shuttle base 56, and the transfer pipe 48 includes the clamp member 58, 58 and is integrally attached to the shuttle base 56.

  As shown in FIG. 2, in the shuttle 54, an air blow pipe 60 that cleans the inside of the sleeve 14 by blowing compressed air together with the transfer pipe 48 is held by the clamp members 58 and 58. It is attached. The air blow pipe 60 is a pipe made of a metal such as copper, and is connected to a compressor or the like (not shown).

  Further, as shown in FIG. 1, the shuttle base 56 is attached to the tip of an air cylinder 62 as a drive source (actuator) at the center in the longitudinal direction (left-right direction in FIG. 1). Here, the air cylinder 62 is fixed to the base plate 66 having a rectangular flat plate shape by the mounting members 64 and 64 so that its axial direction, that is, the expansion / contraction direction is the vertical vertical direction (vertical direction in FIG. 1). Is attached. The base plate 66 is disposed in a fixed position using an L-shaped angle 70 on a shielding cover 68 fixedly provided around the die casting machine 12 as indicated by a two-dot chain line in FIG. .

  In addition, two guide shafts 72 and 72 are provided on both sides of the air cylinder 62 in parallel with the air cylinder 62 in order to stably guide the expansion and contraction operation of the air cylinder 62, respectively. Is inserted into a guide hole formed in the center of the guide block 74 and the stopper block 76 that are fixedly attached to the shuttle block 56, and is connected to the shuttle base 56 at one end (the lower end in FIG. 1). Yes. Furthermore, two nuts 80 and 80 are screwed into male screw portions 78 formed over a predetermined length at the other end portions (the upper end portions in FIG. 1) of the guide shafts 72 and 72, respectively. Inserted and fixed by a double nut mechanism.

  Thus, in the bead loading device 24, the shuttle 54 can be moved up and down above the sleeve 14 as the air cylinder 62 expands and contracts, and is attached to the shuttle 54 integrally. The transfer pipe 48, the air bleeder 52, and the air blow pipe 60 can be reciprocated between the rising end position and the falling end position when such a shuttle 54 is moved up and down above the sleeve 14. It is.

  Specifically, FIG. 1 and FIG. 2 show a state where the shuttle 54 is at the rising end position. Here, the air cylinder 62 is contracted, and the shuttle 54 is moved to the upper (upward) end. At this time, the transfer pipe 48 and the air venting device 52 which are constituent members of the bead throwing device 24 are positioned above the sleeve 14 at a position separated from the sleeve 14.

  On the other hand, when the air cylinder 62 is extended, the shuttle 54 is moved downward, and the shuttle 54 is positioned at the lower end position as shown in FIGS. In this case, the lower nuts 80 and 80 screwed into the male screw portions 78 and 78 of the guide shafts 72 and 72 are brought into contact with the stopper blocks 76 and 76 (see FIG. 5), so that the air The extension operation of the cylinder 62 is restricted, so that the shuttle 54 stops at the lower end position. At this time, the transfer pipe 48 and the air venting device 52 are brought close to the pouring port 38 of the sleeve 14.

  Incidentally, in the state where the shuttle 54 is located at the lower end position, as is apparent from FIG. 3, the flexible tube 50 is configured to be positioned above the transfer pipe 48 without bending over the entire length. (See the thin arrow in FIG. 3). Under such an arrangement state of the flexible tube 50, the beads 20 are conveyed from the bead weighing device 22 into the transfer pipe 48 through the flexible tube 50.

  Furthermore, as shown in FIG. 6, the connection portion of the transfer pipe 48 with the flexible tube 50 is bent so as to incline upward toward the connection end side (the flexible tube 50 side) of the transfer pipe 48. . The bending angle θ on the connection end side of the transfer pipe 48 is set in a range not exceeding 90 °. In the figure, reference numeral 81 denotes a fastening band for firmly connecting the transfer tube 48 and the flexible tube 50.

  Then, under the state where the shuttle 54 is located at the lower end position in this way, the beads 20 are introduced into the sleeve 14 from the air venting device 52 brought close to the pouring port 38 of the sleeve 14. It is.

  Here, the air venting device 52 used in the present embodiment has a structure as shown in FIG. 7, and the beads 20 to the pouring spout 38 provided in the sleeve 14 are as follows. It will be done. That is, the beads 20 that have been sent out from the bead weighing device 22 and have been transported by the transport air inside the transfer pipe 48 are ejected from the front end opening of the transfer pipe 48 toward the internal space of the air venting device 52 ( (See the white arrow in FIG. 7). Therefore, a large number of air holes 82 are formed on the side wall surface (the left wall surface in FIG. 7) and the upper wall surface facing the tip opening of the transfer pipe 48 of the air bleeder 52, and ejected from the transfer pipe 48. Of the transported air and the beads 20, at least a part of the transported air passes through the vent hole 82 and is discharged to the outside of the air venting device 52 (see the thin line arrow in FIG. 7). On the other hand, since the vent hole 82 is formed so as to have an opening size smaller than the particle size of the bead 20, the bead 20 cannot pass through the vent hole 82, and its own weight and the air venting device 52 are not allowed. The beads 20 are dropped downward by the flow of the carrier air remaining in the inside, and the falling beads 20 are introduced from the dropping port 84 provided on the lower wall surface of the air venting device 52 toward the pouring port 38 of the sleeve 14. (See the white two-dot chain line arrow in FIG. 7).

  In the present embodiment, an inclined surface 85 that extends upward is formed on the lower wall surface of the air bleeder 52, and the supply extends downward with respect to the drop port 84 provided in the air bleeder 52. A pipe 86 is attached, and the tip (lower end) of the supply pipe 86 is inserted into the pouring port 38 of the sleeve 14. Thereby, the beads 20 are guided to the inclined surface 85 and dropped downward from the dropping port 84 without accumulating on the lower wall surface of the air bleeder 52, and are introduced into the sleeve 14 through the supply pipe 86. It has become.

  Further, in a state where the shuttle 54 is positioned at the lower end position, the tip of the air blow pipe 60 is inserted into the pouring port 38 of the sleeve 14, and the compressed air is blown out at a preset timing, The inside of the sleeve 14 can be cleaned by removing fine burrs and the like remaining in the sleeve 14 between casting (molding) cycles.

  By the way, a brief description of the casting cycle in the die casting apparatus 10 having such a configuration is as follows. That is, first, in a state where the shuttle 54 is positioned at the lower end position, compressed air is blown into the sleeve 14 from the air blow pipe 60 and the inside of the sleeve 14 is cleaned, and then the beads 20 are put into the sleeve 14. Will be. Here, while the shuttle 54 is positioned at the descending end position, a control device (not shown) performs a control for disabling the pouring operation of the ladle 44 to the pouring machine 16. Next, when the shuttle 54 is moved to the rising end position and the control for disabling the pouring operation of the ladle 44 by the control device is finished, the pouring operation of the ladle 44 is performed, and the pouring position (pouring) The molten metal is supplied into the sleeve 14 from the ladle 44 moved to a position close to the gate 38. In this way, the transfer pipe 48, the air venting device 52 and the ladle 44 interfere (collision) in the vicinity of the sleeve 14 (the pouring port 38), or the molten metal is sprinkled on the air venting device 52. Problems such as end-of-life are avoided. Then, the molten metal supplied into the sleeve 14 is injected by the plunger 18 into the molding cavities 36 of the molds 30 and 32, and the target cast product is molded. Thereafter, the lowering operation of the shuttle 54 is started again, and the above-described steps (casting cycle) including the cleaning step in the sleeve 14 and the step of putting the beads 20 into the sleeve 14 are repeated. It becomes.

  As is clear from the above description, in this embodiment, the shuttle 54 is moved up and down above the sleeve 14, and the transfer pipe 48 and the air venting device 52 attached to the shuttle 54 are vertically moved. Even if there is a wall, a shielding cover (68) or the like around the bead throwing device 24, a sufficient stroke of the shuttle 54 in the vertical direction can be achieved. Therefore, it is possible to advantageously prevent overheating of the components of the bead throwing device 24 such as the transfer pipe 48 and the air venting device 52.

  Further, compared to the conventional die casting apparatus (104) (see FIG. 10) having a bead input apparatus (102) having a shuttle (100) reciprocating in the horizontal direction, space saving in the horizontal direction of the bead input apparatus 24 is saved. Therefore, it is possible to effectively realize the space saving of the entire die casting apparatus 10 including such a bead loading device 24.

  In the bead charging device 24, at least a part of the conveyance air is separated from the bead 20 in the air venting device 52, and the bead 20 is close to the pouring port 38 of the sleeve 14 at the lower end position of the shuttle 54. By being dropped downward from the squeezed dropping port 84, the amount of the beads 20 is dispersed or the beads 20 are scattered around the pouring port 38. Such troubles are advantageously avoided.

  In particular, in the bead input device 24 according to the present embodiment, the transfer tube 48 and the air bleed device 52 attached to the shuttle 54 are provided in the air bleed device 52 from the position where they can move up and down. The tip of the supply pipe 86 attached so as to extend downward from the drop port 84 can be inserted into the pouring port 38 of the sleeve 14 without interfering with the sleeve 14. As a result, it is possible to more advantageously suppress the dispersion of the beads 20 and the like, and the beads 20 can be more effectively introduced into the pouring port 38 without deteriorating the working environment. .

  Furthermore, in the bead loading device 24, in a state where the shuttle 54 is located at the lower end position, a flexible tube 50 as a flexible transport hose connected to the other end side of the transfer tube 48 is provided. From the place where the bead 20 is configured to be positioned above the transfer pipe 48 without bending over the entire length, and the beads 20 are conveyed into the transfer pipe 48 through such a flexible tube 50, There is an advantage that problems such as accumulation of beads 20 in the flexible tube 50 are less likely to occur, and it is not necessary to increase the pressure of the conveyance air more than necessary in order to convey the beads 20.

  In addition, since the connection portion of the transfer pipe 48 with the flexible tube 50 is bent so as to incline upward toward the connection end side of the transfer pipe 48, the transfer pipe 48 is particularly located at the lower end position. In this state, the flexible tube 50 is advantageously avoided from being bent at the connection site with the transfer pipe 48. Accordingly, the beads 20 conveyed through the flexible tube 50 are prevented from being clogged at the connection portion between the transfer tube 48 and the flexible tube 50, and a desired amount of the beads 20 can be reliably put into the pouring gate 38. The feature of being able to do is demonstrated.

  Further, here, an air blow pipe 60 is attached to the shuttle 54, and the air blow pipe 60 can move up and down together with the transfer pipe 48 and the air venting device 52. This can be advantageously prevented, and even when the sleeve 14 is replaced to obtain a desired cast product, there is an advantage that the air blow pipe 60 does not get in the way. That is, a problem that occurs when the air blow pipe is fixedly arranged with respect to the die casting machine as in the prior art, such as bending the air blow pipe to secure a space, and so on. Such a problem that the position of the air blow pipe is displaced due to a difficult operation and the cleaning of the inside of the sleeve is not performed properly is advantageously avoided.

  Furthermore, in the bead input device 24 according to the present embodiment, the shuttle 54 can be moved up and down, so that the tip of the air blow pipe 60 is connected to the pouring port of the sleeve 14 without interfering with the sleeve 14. 38 can be inserted. Thereby, the inside of the sleeve 14 can be cleaned more effectively.

  In this embodiment, the lower nuts 80, 80 screwed into the male screw portions 78, 78 of the guide shafts 72, 72 are brought into contact with the stopper blocks 76, 76, whereby the air cylinder 62 is obtained. Thus, the shuttle operation is stopped at the lower end position. Therefore, by changing the position of each nut 80 on the guide shafts 72, 72, the extension amount of the air cylinder 62 can be adjusted, and the lower end position of the shuttle 54 can be finely adjusted. That is, the stopper block 76 and the nut 80 constitute a stroke adjusting mechanism for the shuttle 54.

  Next, FIG. 8 shows another embodiment of a bead charging device having a structure according to the present invention in a side sectional view. In the bead throwing device 88 shown in FIG. 8, the same reference numerals are given to parts having the same structure as the bead throwing device 24 according to the previous embodiment, and detailed description thereof will be omitted.

  In the bead loading device 88 shown in FIG. 8, the shuttle base 56 is attached to a rotating shaft 92 that is rotated by an operation of a motor 90 as a drive source (actuator) on one end side in the longitudinal direction (right side in FIG. 8). It is attached. Here, the motor 90 is fixedly attached to a base plate (66; not shown) or the like as described above so that the direction of the rotation shaft 92 is in the horizontal direction (vertical direction in FIG. 8). ing. Here, in the lower end position of the shuttle 54 (the position indicated by the solid line in FIG. 8), the transfer pipe 48 and the air blow pipe 60 are substantially inclined (upward toward the connection end side with the flexible tube 50). It is arranged so as to be inclined.

  Thus, in the bead loading device 88, the shuttle 54 is configured to be rotated above the sleeve 14 in accordance with the rotation operation of the motor 90 (rotating shaft 92). The transfer pipe 48, the air bleeder 52 and the air blow pipe 60 which are integrally attached to the upper end of the sleeve 14 are pivoted over the sleeve 14 so that the upper end position (the two-dot chain line in FIG. It is possible to reciprocate between the position indicated by (3) and the descending end position.

  Even in the bead loading device 88 having such a structure, the shuttle 54 can be rotated above the sleeve 14, and the transfer pipe 48 attached to the shuttle 54, the air venting device 52, and Since the air blow tube 60 is configured to move up and down, it is advantageous to prevent overheating of the components of the bead input device 88 such as the transfer tube 48 and the air vent device 52 attached to the shuttle 54. In addition, the space saving in the horizontal direction of the bead throwing device 88 can be effectively realized.

  As mentioned above, although some typical embodiment of this invention has been explained in full detail, they are only an illustration to the last, Comprising: This invention is what by specific description which concerns on such embodiment. It should be understood that this is not to be construed as limiting.

  For example, as in the bead loading device 94 shown in FIG. 9, two air cylinders 62 and 62 are used, and one air cylinder 62 (here, the left air cylinder 62 in FIG. 9) is rotated with respect to the base plate 66. At the same time, the front end portions of the two air cylinders 62 and 62 are attached to the shuttle base 56 so as to be rotatable, and the amount of expansion and contraction of each air cylinder 62 and 62 is set appropriately, thereby enabling the shuttle 54 is moved up and down and pivoted so as to move up and down between the rising end position (the position indicated by the two-dot chain line in FIG. 9) and the lower end position (the position indicated by the solid line in FIG. 9) above the sleeve 14. You may comprise so that it can be moved to. Accordingly, it is possible to more effectively prevent the transfer pipe 48 and the air venting device 52 from being separated from the pouring port 38 where particularly large heat is generated in the sleeve 14, and overheating them. Become.

  Further, the mechanism for moving the shuttle 54 up and down or rotating is not limited to the above-described mode. For example, various known mechanisms using a robot arm, a rack and pinion, a chain, and the like are used. A mechanism can be adopted as appropriate.

  Further, in the bead throwing device 24, nuts 80 and 80 are screwed into male screw portions 78 formed below the stopper block 76 for the respective guide shafts 72 and 72, and the air cylinder 62 is contracted. The stopper block 76 and the nut 80 are brought into contact with each other, so that the contraction operation of the air cylinder 62 is restricted, and the rising end position of the shuttle 54 can be adjusted. As a result, the stroke of the shuttle 54 can be adjusted more precisely.

  Further, the fixing position of the base plate 66 in the bead loading device 24 is not limited to the illustrated one. For example, the base plate 66 is fixed in position relative to the sleeve 14 such as the fixing platen 26 of the die casting machine 12. It can be suitably attached to a stationary member such as a constituent member of the die casting apparatus 10 or a wall around the die casting machine 12.

  In addition, although not listed one by one, the present invention can be carried out in an embodiment to which various changes, modifications, improvements and the like are added based on the knowledge of those skilled in the art. It goes without saying that any one of them falls within the scope of the present invention without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 10 Die-casting device 12 Die-casting machine 14 Molten metal supply sleeve 16 Pouring machine 18 Plunger 20 Bead 22 Bead measuring device 24, 88, 94 Bead feeding device 38 Pouring port 44 Ladle 48 Transfer pipe 50 Flexible tube 52 Air venting device 54 Shuttle 60 Air blow Pipe 62 Air cylinder 66 Base plate 76 Stopper block 80 Nut 82 Vent hole 84 Drop port 86 Supply pipe 90 Motor

Claims (4)

The solid beads conveyed in the transfer pipe by the transfer air are guided to an air vent connected to one end of the transfer pipe, and at least a part of the transfer air is separated from the beads. The bead charging device configured to drop the beads downward from the dropping port provided in the air venting means and to enter the molten metal supply sleeve of the die casting machine that is opened to the outside. In
The transfer pipe and the air venting means are attached to a shuttle that can be moved up and down, and the shuttle is moved up and down or rotated above the molten metal supply sleeve so that the shuttle at the lower end position of the shuttle is A dropping port provided in the air venting unit is brought close to a pouring port of the molten metal supply sleeve, and the beads dropped from the dropping port are configured to be introduced into the pouring port. Bead feeding device.   A flexible transfer hose is connected to the other end of the transfer pipe, and the transfer hose is configured to be positioned above the transfer pipe over the entire length, 2. The bead loading device according to claim 1, wherein the beads are transported into the transfer pipe through the transport hose in a state where the shuttle is located at the descending end position.   The bead input device according to claim 2, wherein a connection portion of the transfer pipe with the transfer hose is bent so as to incline upward toward a connection end side of the transfer pipe. An air blow pipe adapted to clean the inside of the molten metal supply sleeve by blowing out compressed air is attached to the shuttle, and the air blow pipe is movable up and down together with the transfer pipe and the air venting means. The bead input device according to any one of claims 1 to 3, wherein

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