JP6196100B2 - Bead feeder - Google Patents

Description

  The present invention relates to a bead supply device, and more particularly, to a bead supply device configured to measure a certain amount of beads, which are solid lubricants guided from a hopper, so that a supply measuring member can operate smoothly. It is.

  Conventionally, a die casting method is well known as one of methods for casting a precise metal casting. However, there is a cold chamber type die casting machine which is one of casting apparatuses used in such a die casting method. In each casting cycle, a predetermined amount of molten metal such as aluminum pumped by a ladle is supplied to a sleeve (also referred to as a shot sleeve), and then the molten metal in the sleeve is moved to a plunger (shot piston or The target metal casting is molded by injection at a high speed and high pressure into the molding cavity of the mold.

  By the way, in such a cold chamber type die casting machine, various lubricants are used to lubricate the sleeve and the plunger, and are supplied into the sleeve every casting (molding) cycle. Among them, in recent years, pellet-shaped solid lubricants (beads) are often used because they are easy to handle and preferable in the working environment.

  And as one of the devices for supplying such a pellet-shaped solid lubricant into the sleeve in a certain amount, a pellet supply device as shown in JP 2012-111152 A (Patent Document 1), Proposed. In this case, a measuring member having a measuring chamber which is arranged so as to be reciprocally movable between the first position and the second position below the pellet housing portion and penetrates in the vertical direction, and reciprocally moves the measuring member. An actuator, a pellet reservoir for storing pellets dropped from the weighing chamber by being positioned below the weighing chamber when the weighing member is in the first position, and a weighing member being in the second position A structure including a pellet supply hole for dropping pellets toward the measurement chamber and a pellet transfer mechanism for transferring the pellets in the pellet reservoir to the supply portion by being positioned above the measurement chamber is employed. When the measuring member reciprocates between the first position and the second position, an amount of pellets corresponding to the number of times of movement of the measuring member and the volume of the measuring chamber is supplied to the supply portion. And it is configured to be able.

  However, in such a conventionally proposed pellet supply apparatus, the measuring member as described above is provided between the upper wall where the pellet supply hole is formed and the lower wall where the pellet dropping hole is formed. By repeating the solid lubricant supply operation from the sliding structure, the solid lubricant is caught in the slight gap that exists between the metering member and the upper and lower walls. As a result, there is a problem that the measuring member becomes non-slidable. In addition, in order to eliminate such a slight gap, if the measuring member is firmly sandwiched between the upper wall and the lower wall, there is a problem that smooth sliding of the measuring member is hindered. It becomes.

JP 2012-111152 A

  Here, the present invention has been made in the background of such circumstances, and the problem to be solved is that a certain amount of beads (pellets) that are solid lubricants by a reciprocating operation of the measuring member. To provide a bead supply device capable of preventing biting of a bead between a measuring member and a member that holds the metering member on both sides when measuring and supplying, and smoothly sliding the measuring member. is there.

  In the present invention, in order to solve the above-described problems, the bead supply hole is connected to the hopper and led to the beads accommodated in the hopper and connected to an external air source. An upper plate having an air introduction hole; a lower plate having a bead delivery hole provided at a position corresponding to the air introduction hole of the upper plate; and a slidably interposed between the upper plate and the lower plate A measuring member having a predetermined volume of bead measuring hole, and the measuring member is introduced from the first position where the bead measuring hole communicates with the bead introducing hole. By sliding to a second position that allows simultaneous communication with the hole and the bead delivery hole, the beads filled in the bead metering hole at the first position can be removed from the air introduction hole at the second position. The beads are fed by the introduced air. In the bead supply device that can be delivered through the hole, a first recess is formed on the surface of the upper plate facing the measuring member, and the first pressing plate is fitted into the first recess, A first urging means for urging the first pressing plate toward the measuring member is disposed between the bottom surface of the first recess and the first pressing plate, while the lower plate A second recess is formed on a surface of the second recess facing the measuring member, and a second pressing plate is fitted into the second recess, and the bottom surface of the second recess and the second pressing plate A second urging means for urging the second pressing plate toward the measuring member is disposed between the upper and lower surfaces of the measuring member by the first and second pressing plates. The bead supply device characterized in that the measuring member can be slid in the pressed state, and has a basic configuration. It is.

  In addition, according to one of the desirable embodiments of the bead supply device according to the present invention, the measuring member is configured by a transparent member, and thereby, the bead filling state in the bead measuring hole in the measuring member And the bead supply state to the bead delivery hole can be well understood.

  Further, in the present invention, preferably, spacer members are respectively disposed on both sides in a direction perpendicular to the sliding direction of the measuring member, and the spacer members are disposed between the upper plate and the lower plate. On the other hand, the measuring member is slid between the first position and the second position between the spacer members, whereby the measuring member becomes a spacer member. Therefore, the weighing member can be reciprocated more stably.

  Further, in the present invention, advantageously, a discharge pipe capable of discharging the beads in the communication portion to the outside is provided at a communication portion between the hopper and the bead supply hole of the upper plate so as to be inclined downward. Accordingly, the beads accommodated in the hopper can be quickly discharged through the communication portion.

  Thus, in the bead supply device according to the present invention, the first pressing plate is disposed on the measuring member by the first urging means in the first recess formed on the lower surface of the upper plate. The second pressing plate is fitted in the second recess formed on the upper surface of the lower plate while the second pressing plate is directed toward the measuring member due to the arrangement of the second urging means. Thus, the measuring member is reciprocally slid in the state where the upper and lower surfaces are pressed by the first and second pressing plates, and is weighed. The gap between the measuring member and the upper plate (first pressing plate) and the lower plate (second pressing plate) is such that the beads (solid lubricant) are bitten between them. Since the occurrence is suppressed or avoided as much as possible, the biting of the beads is effective. To be become the can to prevent, whereby the metering member is the problem that it becomes impossible sliding may be advantageously eliminated.

  Moreover, in the bead supply device according to the present invention, the measuring member that measures a certain amount of beads is appropriately placed between the upper plate (first pressing plate) and the lower plate (second pressing plate). Since it can be sandwiched with a pressing force, the characteristic that such a measuring member can be smoothly slid will be exhibited.

It is a partial section front explanatory view showing an example of a bead supply system using a bead supply device according to the present invention. FIG. 2 is a perspective explanatory view schematically showing the bead supply device according to the present invention incorporated in the bead supply system shown in FIG. It is AA sectional explanatory drawing in FIG. 1, Comprising: Only the part of a bead supply apparatus is shown. FIG. 4 is a cross-sectional explanatory diagram along BB in FIG. 3. It is CC sectional explanatory drawing in FIG. FIG. 5 is an enlarged explanatory view of a D part in FIG. 4. FIG. 5 is an explanatory diagram showing an example of a process performed when supplying beads using the bead supply system shown in FIG. 1 in a cross-sectional form corresponding to FIG. 4. In the first position, the beads are filled in the bead metering hole, and (b) shows that the metering member is in the second position and the beads are fed through the bead delivery hole. It shows the state. It is AA sectional explanatory drawing in FIG. 1, Comprising: Only the part of the discharge pipe provided in the communication part of the hopper and the bead supply hole of an upper board is shown.

  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 shows an example of a bead supply system incorporating a bead supply device according to the present invention in the form of a partial cross-sectional front view. The bead supply system 10 includes a bead supply device 20 including an upper plate 14, a lower plate 16, and a measuring member 18 interposed between the upper plate 14, the lower plate 16, and a bead therein. , A hopper 24 in which 22 is accommodated, an air cylinder 26 that operates the measuring member 18 of the bead supply device 20, an air source 28 that supplies compressed air to the air cylinder 26 and the bead supply device 20, and a feed from the bead supply device 20. And a supply pipe 30 through which a certain amount of beads are guided are accommodated and arranged, and a certain amount of beads 22 delivered from the bead supply device 20 are connected to the cold chamber type via the supply pipe 30. It is supplied to a pouring port of a sleeve of a die casting machine (not shown).

  In the bead supply system 10 shown in FIG. 1, the hopper 24 that accommodates the beads 22 is disposed above the bead supply device 20 and has four side surfaces (only three are shown in FIG. 1). It is constituted by the side walls 24a, and the lower side portions of the side walls 24a are formed as inverted square frustum-shaped wall portions that approach each other downward, and further below the upper plate 14 of the bead supply device 20 A communication portion 36 having a rectangular rectangular tube shape that is communicated with the bead supply hole 34 is formed. The upper end opening of the hopper 24 is covered with the ceiling wall 12a of the housing 12, and a part of the ceiling wall 12a is opened to form a bead insertion port 38 for inserting the beads 22. . Here, in order to prevent foreign matter such as dust and insects from entering the hopper 24 through the bead insertion port 38 in addition to burrs scattered from the die casting machine, the hopper 24 is positioned above the hopper 24. A wire mesh 40 is disposed so as to partition the interior of the wire 24 vertically. The mesh is made larger than the outer shape of the bead 22, and the foreign matter is removed by passing the bead 22 through the wire mesh 40. It has become. Here, a part of the side wall 24a on the front side of the hopper 24 is a transparent viewing window 42 extending in the height direction (vertical direction in FIG. 1), and the remaining amount of the beads 22 in the hopper 24 is outside. You can see from. In addition, a level sensor 44 is attached to one of the side walls 24a of the hopper 24. When the remaining amount of the beads 22 in the hopper 24 falls below a predetermined level, a signal notifying that is output. It is like that.

  The beads 22 used here include, for example, various known pellet-shaped solid lubricants that are commercially available, which are obtained by granulating a mixture of wax and graphite. For example, those commercially available under the name of SHOTBEADS (registered trademark: manufactured by J & S Chemical Co., Ltd.) and the like are appropriately adopted.

  The air cylinder 26 functions as an actuator for reciprocating the measuring member 18 in the bead supply device 20 in the sliding direction (left and right direction in FIG. 1), and the bead supply device via the bracket 46. 20 are attached to the side surfaces of the upper plate 14 and the lower plate 16. Such an air cylinder 26 has air introduction portions 48a and 48b, which are connected to the air source 28 via air piping and solenoid valves 50a and 50b, respectively, and compressed from there. It is driven by air, and its drive is controlled by opening and closing operations of solenoid valves 50a and 50b connected to a controller (not shown).

  Here, the air source 28 is for supplying compressed air to various parts of the bead supply system 10, and is connected to a compressor (not shown) installed outside the housing 12. The air source 28 is provided with a plurality of (here, three) solenoid valves 50a, 50b, 50c, which are connected to a controller (not shown) to control the opening / closing operation thereof. The supply of compressed air is controlled. Here, it is desirable that the compressed air supplied from the air source 28 to the bead supply system 10 is dry and clean air. For this reason, a purifier such as an air filter is preferably installed between the air source 28 and the compressor.

  Further, at the lower part of the bead supply device 20, the beads 22 fed out from the bead feed holes (54) of the lower plate 16 are led to a pouring port of a sleeve of a cold chamber die casting machine (not shown) via a nipple 52. A supply pipe 30 is connected. The supply pipe 30 is guided to the outside of the housing 12 through the side wall 12 b of the housing 12. In addition, as such a supply pipe 30, it is possible to use a well-known resin or metal pipe or hose. Among them, it is preferable to use a transparent netted vinyl hose in the supply pipe 30. This is desirable because the presence or absence of an obstacle can be easily confirmed and the path of the supply pipe 30 can be adjusted relatively freely.

  Incidentally, the bead supply device 20 incorporated in the bead supply system 10 specifically has a structure as shown in FIGS. 2 to 6. 2 and 4, the upper plate 14 is a resin thick plate having a longitudinal rectangular shape, and has a long hole-shaped bead supply hole 34 and an inner peripheral surface as a screw portion. The circular air-introducing holes 58 are formed at predetermined positions separated from each other in the horizontal direction (left-right direction in FIGS. 2 and 4) so as to penetrate in the plate thickness direction. And from the peripheral part of the bead supply hole 34, the four inclined surfaces 60 which spread upward are provided, and are connected to the lower end of the communication part 36 under the hopper 24, and the beads accommodated in the hopper 24 22 is smoothly guided to the bead supply hole 34 through the communication portion 36. Further, two bolt insertion holes 62 are provided at two positions in the direction perpendicular to the longitudinal direction of the upper plate 14, two at a position spaced apart in the horizontal direction.

  On the other hand, the lower plate 16 is also a resin thick plate having a rectangular shape like the upper plate 14, and the inner peripheral surface is a screw portion at a position corresponding to the air introduction hole 58 of the upper plate 14. A circular hole-shaped bead delivery hole 54 is formed so as to penetrate in the plate thickness direction. It should be noted that a total of four bolt insertion holes 64 are provided at positions corresponding to the four bolt insertion holes 62 provided in the above-described upper plate 14 at both side portions in a direction perpendicular to the longitudinal direction of the lower plate 16. It has been.

  A measuring member 18 having a predetermined volume of bead measuring holes 66 is interposed between the upper plate 14 and the lower plate 16 so as to be slidable in the horizontal direction. As shown in FIGS. 2 and 5, the measuring member 18 is a resin-like long rectangular plate-like body 68 having a narrower width (length in the vertical direction in FIG. 5) than the upper plate 14 and the lower plate 16. And a moving member 70 made of resin having a narrower width and a substantially T-shaped plate shape in plan view. Specifically, a notch that penetrates the plate-like main body 68 in the thickness direction and opens at one end (left end in FIG. 5) of the plate-like main body 68 in the sliding direction (horizontal direction) of the measuring member 18. 72 is formed, and the moving member 70 is movably fitted in the notch 72. A bead metering hole 66 is formed in a space between the front end surface 70a of the moving member 70 (the right end surface in FIG. 5) and the innermost (bottom) wall surface 72a of the notch 72 of the plate-like member 68. -ing Here, an adjustment member mounting screw hole 74 is provided in the rear end portion (left end portion in FIG. 5) of the moving member 70, and a fixing member fixed to one end portion of the plate-like main body 68 there. A threaded portion at the tip of an adjustment member 78 that is rotatably supported by 76 and is not movable in the horizontal direction is screwed. Accordingly, the adjustment member 78 is rotated by the handle 79, whereby the moving member 70 is moved in the horizontal direction, and the distance between the front end surface 70a and the innermost wall surface 72a of the notch 72 is changed. By doing so, the size (volume) of the bead metering hole 66 can be changed, so that the target supply amount of the beads 22 can be metered advantageously.

  As shown in FIG. 4, the tip of the rod (80) of the air cylinder 26 is screwed into the other end (right end in FIG. 4) of the measuring member 18 (plate body 68). A rod insertion hole 82 is provided. That is, the tip of the rod 80 of the air cylinder 26 is screwed into the rod insertion hole 82 of the measuring member 18 and is further fixed by the nut 118. As a result, the measuring member 18 reciprocally moves between the first position [see FIG. 7A] and the second position [see FIG. 7B] by driving the air cylinder 26. Thus, the bead 22 filling operation into the bead metering hole 66 at the first position and the bead 22 feeding operation at the second position are repeated. The driving of the air cylinder 26 is controlled in accordance with the casting cycle of the die casting machine by controlling the opening / closing operation of the solenoid valves 50a and 50b by a controller (not shown). In each cycle, a certain amount of beads 22 can be supplied into the sleeve of the die casting machine.

  Further, on both sides in a direction perpendicular to the sliding direction (horizontal direction) of the measuring member 18, as shown in FIGS. 2 and 3, resin-made long rectangular bar-shaped spacer members 84 are respectively provided. It is disposed and is sandwiched between the upper plate 14 and the lower plate 16. The thickness of these spacer members 84 (the thickness in the vertical direction in FIG. 3) is equal to or slightly thinner than the measuring member 18. Two spacers 86 extending linearly in the longitudinal direction are formed on the surfaces of the spacer members 84 and 84 facing the measuring member 18. Thereby, the frictional resistance generated between the spacer member 84 and the measuring member 18 can be reduced, and resin waste generated slightly by sliding of the measuring member 18 can be accommodated. This contributes to smooth sliding. Furthermore, the spacer members 84 and 84 are each provided with two bolt insertion holes 88 at positions separated in the horizontal direction.

  2, four bolt insertion holes 62 provided in the upper plate 14, four bolt insertion holes 64 provided in the lower plate 16, and spacer members 84 and 84 are provided. The two bolt insertion holes 88 are arranged at positions corresponding to each other, and the connecting bolts (90) are inserted into the bolt insertion holes 62, 64, 88, and the nuts are inserted. By tightening at (92), the bead supply device 20 is assembled in a state as shown in FIGS.

  Further, the bead supply device 20 having such a structure is provided with a first pressing plate 94 and a second pressing plate 96 so as to be accommodated in the upper plate 14 and the lower plate 16, respectively. ing. That is, the first pressing plate 94 has a long rectangular flat plate shape that is thinner than the upper plate 14, and its width (the length in the left-right direction in FIG. 3) is measured as shown in FIG. In addition to being narrower than the width of the member 18, as shown in FIG. 4, the length (the length in the left-right direction in FIG. 4) is made shorter than the length of the upper plate 14. In addition, through holes 98 and 100 having a rectangular hole shape are formed at positions corresponding to the bead supply holes 34 and the air introduction holes 58 of the upper plate 14, respectively. Further, the first pressing plate 94 is provided with a compression coil spring 104 as a first urging means so as to open on an upper surface 94a (a surface facing a bottom surface 102a of the first recess 102 described later). A plurality (six in this case) of the round hole-shaped recesses 106 for accommodating are formed.

  And such a 1st press board 94 is attached so that it may fit in the 1st recessed part 102 formed so that it might open in the center part of the opposing surface (lower surface 14a) with the measurement member 18 of the upper board 14. FIG. It is. Here, the first recess 102 has an outer shape equal to or slightly larger than that of the first pressing plate 94, and a depth equal to the thickness of the first pressing plate 94, or It is said that it is deeper than that. Further, the first pressing plate 94 is fitted into the first recess 102 in the state in which the compression coil spring 104 is accommodated in each of the six recesses 106 provided therein. As shown in FIG. 6, the compression coil spring 104 as the first biasing means exerts a predetermined biasing force between the bottom surface 102a of the first recess 102 and the first pressing plate 94. Will be placed. In other words, in this case, in a state where the compression coil spring 104 is in a natural length, the lower surface 94b (the surface facing the measuring member 18) of the first pressing plate 94 protrudes from the first recess 94. For example, in the assembled state of the bead supply device 20 shown in FIGS. 3 to 6, the compression coil spring 104 is arranged so as to exert a force for urging the first pressing plate 94 toward the measuring member 18. It is. The first pressing plate 94 is configured such that the entire surface in the width direction on the lower surface 94b is in contact with the upper surface of the measuring member 18, as shown in FIG.

  Further, the second pressing plate 96 has a longitudinal rectangular flat plate shape that is thinner than the lower plate 16 like the first pressing plate 94 described above, and as shown in FIG. The width is narrower than the width of the measuring member 18 and the length is shorter than the length of the lower plate 16 as shown in FIG. A rectangular hole-shaped through portion 108 is formed at a position corresponding to the bead delivery hole 54 of the lower plate 16. Further, the second pressing plate 96 has a compression coil spring 112 as a second urging means so as to open on a lower surface 96a (a surface facing a bottom surface 110a of the second recess 110 described later). A plurality of (in this case, six) recesses 114 having a round hole shape are formed.

  Further, like the first pressing plate 94, the second pressing plate 96 is formed so as to open at the center of the surface (upper surface 16a) facing the measuring member 18 of the lower plate 16. The second recess 110 is attached so as to be fitted. That is, the second recess 110 has an outer shape that is the same as or slightly larger than that of the second pressing plate 96 and has a depth that is equal to or equal to the thickness of the second pressing plate 96. The second pressing plate 96 is inserted into the second recess 110 in a state where the compression coil spring 112 is accommodated in each of the second recesses 110. As shown in FIG. 6, a compression coil spring 112 as the second urging means is disposed between the bottom surface 110 a of the second recess 110 and the second pressing plate 96. . In short, under the condition that the compression coil spring 112 has a natural length, the upper surface 96b (the surface facing the measuring member 18) of the second pressing plate 96 protrudes from the second recess 110, in other words, FIG. Under the assembled state of the bead supply device 20 shown in FIGS. 3 to 6, the compression coil spring 112 is disposed so as to exert a force for urging the second pressing plate 96 toward the measuring member 18. It is. As shown in FIG. 3, the entire surface in the width direction on the upper surface 96 b of the second pressing plate 96 is configured to contact the lower surface of the measuring member 18.

  Thus, the upper and lower surfaces of the measuring member 18 are pressed by the first and second pressing plates 94 and 96 by the urging force of the compression coil springs 104 and 112.

  By the way, the bead supply device 20 is operated as follows. That is, first, as shown in FIG. 7A, the measuring member 18 is positioned at a position where the bead measuring hole 66 and the bead supply hole 34 of the upper plate 14 communicate with each other, that is, the first position. In this state, the beads 22 accommodated in the hopper 24 are dropped through the bead supply holes 34 (and the through portions 98 of the first pressing plate 94) and filled in the bead measuring holes 66, The required amount of beads will be weighed.

  Next, as shown in FIG. 7B, when the air cylinder 26 is operated, the measuring member 18 moves its bead measuring hole 66 into the air introduction hole 58 of the upper plate 14 and the bead delivery hole 54 of the lower plate 16. The beads 22 filled in the bead metering holes 66 are sent through the bead delivery holes 54 by being slid and moved to the position where they are simultaneously communicated with each other, that is, the second position. A joint 116 screwed into the air introduction hole 58 is connected to a solenoid valve 50c disposed in the air source 28 via an air pipe, and the opening of the solenoid valve 50c causes the air introduction hole 58 to open. The introduced compressed air causes the beads 22 to be fed into a sleeve of a die casting machine (not shown) through a supply pipe 30 connected to a nipple 52 screwed into a bead delivery hole 54. Yes. By introducing such compressed air, it is advantageously prevented that the beads 22 remain on the inner peripheral surface of the bead metering hole 66 and the like, and the bead metering hole 66 is filled at the first position. This makes it possible to reliably deliver a predetermined amount of beads 22.

  As is clear from the above description, in the bead supply device 20, the measuring member 18 is reciprocally slid in a state where the upper and lower surfaces are pressed by the first and second pressing plates 94 and 96. The beads 22 are caught between the measuring member 18 and the upper plate 14 (first pressing plate 94) and the lower plate 16 (second pressing plate 96). The generation of such a gap is suppressed or prevented as much as possible. For this reason, even when the supply operation of the beads 22, that is, the reciprocating (sliding) operation of the measuring member 18 is repeatedly performed, the measuring member 18 becomes difficult to slide or cannot slide due to the biting of the beads 22. This problem can be advantageously avoided.

  In particular, when the measuring member 18 reciprocates between the first position and the second position, the bead measuring hole 66 is always under a predetermined pressure from the first pressing plate 94 and the second pressing plate 96. The bead 22 filled in the bead metering hole 66 is placed between the metering member 18 and the first pressing member while the metering member 18 is sliding. The biting between the plate 94 and the second pressing plate 96 can be advantageously prevented.

  Further, the measuring member 18 is appropriately pressed between the upper plate 14 (first pressing plate 94) and the lower plate 16 (second pressing plate 96) by the urging forces of the plurality of compression coil springs 104 and 112. Since it is sandwiched and slid with pressure, the feature that the measuring member 18 can be smoothly slid under an appropriate sliding resistance (friction force) can be effectively exhibited. Further, conventionally, tightening by the connecting bolt 90 and the nut 92, which has been performed to adjust the relationship between the clearance between the measuring member 18 and the upper plate 14 and the lower plate 16 and the sliding resistance to an appropriate state. The advantage that force adjustment work becomes unnecessary can also be enjoyed.

  Further, the measuring member 18 is configured such that the measuring member 18 is slidable between the first position and the second position between the spacer members 84 and 84 as in the present embodiment. Can be advantageously guided in the sliding direction by the spacer members 84, 84, so that the metering member 18 can be stably reciprocated.

  The exemplary embodiments of the present invention have been described in detail above. However, the embodiments are merely examples, and the present invention is limited in any way by specific descriptions according to such embodiments. It should be understood that it is not interpreted.

  For example, in the bead supply device 20 having the structure as illustrated, the measuring member 18 (the plate-like main body 68 and the moving member 70) is advantageously constituted by a transparent member. By doing so, the filled state of the beads 22 in the bead metering holes 66 and the presence or absence of the beads 22 can be visually recognized from the outside of the bead supply device 20. In addition, when the spacer members 84 and 84 are arrange | positioned like exemplary embodiment, it is desirable to also make them together a transparent member. And as a material which gives such a transparent member, polycarbonate (PC) resin etc. can be used, for example.

  Further, as shown in FIGS. 1 and 8, it is desirable that the communicating portion 36 of the hopper 24 is provided with a cylindrical discharge pipe 120 that can discharge the beads 22 to the outside so as to be inclined downward. . Thereby, there exists an advantage that the discharge | emission operation | work and replacement | exchange operation | work of the bead 22 in the hopper 24 can be performed easily and rapidly. Needless to say, the tip of the discharge pipe 120 is closed by the cap 122 during normal bead weighing and supply operation.

  Furthermore, in the above-described embodiment, the measuring member 18 includes the plate-shaped main body 68 and the moving member 70, and the bead measuring hole 66 includes the tip surface 70 a of the moving member 70 and the notch 72 of the plate-shaped member 68. Although it is configured to be formed between a part of the wall surface 72a, the moving member is omitted, and a bead measuring hole having a predetermined volume penetrating in the plate thickness direction is simply formed in the plate-like main body. The metering member may be configured. In this case, the configuration of the measuring member can be simplified.

  In the above-described embodiment, the spacer members 84 and 84 are disposed on both sides in the direction perpendicular to the sliding direction (horizontal direction) of the measuring member 18, but these are omitted. Is also possible. Thereby, in bead supply device 20, the number of parts can be reduced. In this case, in order to advantageously guide the measuring member 18 in the sliding direction, both or either of the upper plate 14 and the lower plate 16 are in a direction perpendicular to the sliding direction of the measuring member 18. It is also effective to project both side portions in a direction in which the upper plate 14 and the lower plate 16 face each other so as to have a substantially U-shaped cross section, and to guide the measuring member 18 at the protruding portion.

  Furthermore, the first and second urging means are not limited to the compression coil springs 104 and 112, and known urging means such as various springs such as a leaf spring and a disc spring, or an elastic body such as rubber are employed. Is possible. Further, the arrangement position and the number of the first and second urging means are not particularly limited, and the first and second pressing plates 94 and 96 are urged with an appropriate force without bias. If it is within a possible range, it can be set appropriately.

  The usage mode of the bead supply device according to the present invention is not limited to use as a solid lubricant supply device to a die casting machine as described above, and various pellets (beads) are used in various applications. It can be used as a supply device.

  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 Bead supply system 14 Upper plate 16 Lower plate 18 Measuring member 20 Bead supply apparatus 22 Bead 24 Hopper 26 Air cylinder 28 Air source 30 Supply pipe 34 Bead supply hole 36 Communication part 54 Bead delivery hole 58 Air introduction hole 66 Bead measurement hole 84 Spacer member 94 First pressing plate 96 Second pressing plate 102 First recess 102a Bottom surface 104, 112 Compression coil spring 110 Second recess 110a Bottom surface 120 Discharge pipe

Claims (4)

Corresponding to the upper plate having a bead supply hole that is communicated with the hopper and through which the beads accommodated in the hopper are guided, an air introduction hole connected to an external air source, and the air introduction hole of the upper plate A lower plate having a bead delivery hole provided at a position, and a measuring member having a predetermined volume of bead measuring holes slidably interposed between the upper plate and the lower plate. Is slid from a first position where the bead metering hole and the bead introduction hole are communicated to a second position where the bead metering hole is simultaneously communicated with the air introduction hole and the bead delivery hole. In the bead supply device, the beads filled in the bead metering hole at the first position can be sent out through the bead delivery hole by the air introduced from the air introduction hole at the second position. ,
A first recess is formed on the surface of the upper plate facing the measuring member, and the first pressing plate is fitted into the first recess, and the bottom surface of the first recess and the first pressing A first urging means for urging the first pressing plate toward the measuring member is disposed between the plate and a second concave portion on a surface of the lower plate facing the measuring member. The second pressing plate is fitted into the second recess, and the second pressing plate is disposed between the bottom surface of the second recess and the second pressing plate. A second urging means for urging the metering member is arranged, and the metering member is slid in a state where the upper and lower surfaces of the metering member are pressed by the first and second pressing plates. A bead supply device characterized by the above.   The bead supply device according to claim 1, wherein the measuring member is formed of a transparent member.   Spacer members are respectively disposed on both sides in a direction perpendicular to the sliding direction of the measuring member, and the spacer members are sandwiched between the upper plate and the lower plate. The bead supply device according to claim 1 or 2, wherein a measuring member is slidable between the first position and the second position. The discharge pipe which can discharge | emit the bead in this communication part outside is provided in the communication part of the said hopper and the bead supply hole of the said upper board in the downward inclination, The any one of Claim 1 thru | or 3 The bead supply device according to Item 1.

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