JP2023057557A - material charging device - Google Patents

Abstract

To provide a material charging device capable of securely charging materials to a melting furnace.SOLUTION: A material charging device 10 comprises: a stage part 11 having a mounting face 12 on which materials 23 are mounted, and in which the materials 23 move on the mounting face; a holding cylinder 21 holding the plural materials 23 in a state of being accumulated vertically upward with respect to the mounting face 12 of the stage part 11; a hammer 31 applying ejection force toward a horizontal direction against the mounting face 12 of the stage part 11 with respect to the lowermost material 23a located on the mounting face of the stage part 11 in the plural materials 23a held by the holding cylinder 21; and a driving part 41 exerting driving force for executing an ejection operation and a retraction operation toward the horizontal direction against the mounting face 12 of the stage part 11 by the hammer 31. Then, the hammer 31 comprises a projection part 32 projecting forward in a progression direction of the ejection operation at a forward upper part of the hammer 31.SELECTED DRAWING: Figure 2

Description

The present invention relates to a material charging device.

2. Description of the Related Art A die casting method is known in which a molten metal is injected into a cavity formed in a pair of openable and closable molds, and the molten metal is cooled and hardened to form a die cast product. In this type of die casting method, the molten metal is held in a melting furnace, and the molten metal is supplied from the melting furnace toward the cavity. Various materials have been added to the molten metal melt in the furnace.

For example, when the molten metal is aluminum alloy molten metal, strontium is added. By adding strontium to the molten aluminum alloy, the aluminum structure is refined when the molten aluminum is cooled and hardened, and a hard and elongating aluminum alloy can be obtained. However, since strontium is oxidized and depleted in aluminum while it is held in a melting furnace, it is necessary to continuously add strontium to the molten aluminum alloy.

Therefore, in the field of die casting, there is a demand for an apparatus for continuously and sequentially charging various materials into molten metal in a melting furnace. As a conventionally known material charging device, for example, there is one described in Patent Document 1 below. A material charging device disclosed in Patent Document 1 below discloses a mechanism for charging a block-shaped material into a melting furnace by horizontally pushing out a block-shaped material with an extrusion cylinder.

Japanese Patent Application Laid-Open No. 2002-224812

However, there is still room for improvement in the conventional material charging device represented by Patent Document 1 cited above in terms of reliably charging the material into the melting furnace. For example, when a plurality of materials are stacked vertically upward, clogging of the materials may occur in a mechanism for horizontally pushing out the materials with an extrusion cylinder. Moreover, when the material has a complicated shape, it may be difficult to stably project the material toward the melting furnace.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems existing in the prior art, and an object thereof is to provide a material charging device capable of reliably charging a material into a melting furnace. .

The present invention will be described below. In order to facilitate understanding of the present invention, the reference numbers of the attached drawings are added in parentheses, but the present invention is not limited to the illustrated forms.

A material charging device (10) according to the present invention has a mounting surface (12) on which a material (23) is mounted, and a stage portion (11) on which the material (23) moves on the mounting surface (12). ), a holding cylinder (21) for holding a plurality of the materials (23) stacked vertically upward with respect to the mounting surface (12) of the stage (11), and the holding cylinder (21 ), the lowermost material (23 (23a)) positioned on the mounting surface (12) of the stage (11) among the plurality of materials (23) held by the stage (11 ), the hammer (31) is horizontal to the mounting surface (12) of the stage (11). By providing a drive unit (41) that exerts a driving force for performing a projecting operation and a pulling back operation in a direction, the stage unit (11) can be vertically upwardly moved with respect to the mounting surface (12) of the stage unit (11). A material charging device (10) for sequentially charging a plurality of stacked materials (23) into a melting furnace, wherein the hammer (31) is an upper front portion of the hammer (31), and the thrusting action progresses. It is characterized by having a projecting part (32) projecting forward in the direction.

In the material throwing device (10) according to the present invention, the upper surface of the hammer (31) preferably has an inclined surface (33) that slopes downward toward the front in the direction in which the hammer (31) is pushed out. be.

Further, in the material charging device (10) according to the present invention, at least the mounting surface (12) on which the material (23) is mounted on the stage (11) and at least the inclined surface (12) on the hammer (31) 33) can be formed of a low friction coefficient member having a lower friction coefficient than the material (23).

Further, in the material charging device (10) according to the present invention, the material (23) is placed behind the material (23) below the holding tube (21) and in the opposite direction to the projecting direction of the material (23). A stopper pin (51) can be provided to prevent the movement of the .

ADVANTAGE OF THE INVENTION According to this invention, the material injection|throwing-in apparatus which can inject|throw-in material reliably with respect to a melting furnace can be provided.

FIG. 2 is a side view schematically showing the schematic configuration of the material charging device according to the present embodiment, and particularly showing the initial state before the hammer of the material charging device operates. It is the side view which showed typically the schematic structure of the material injection|throwing-in apparatus which concerns on this embodiment, and the state which especially the said hammer performed thrusting operation|movement is shown. It is a side view which shows the material injection|throwing-in apparatus which concerns on a comparative example, Comprising: The hammer has shown the state which protruded. FIG. 4 is a side view for explaining significant features of the hammer according to this embodiment; It is a side view which shows the material injection|throwing-in apparatus which concerns on a comparative example, Comprising: The state which a hammer is pulled back is shown. It is a top view at the time of seeing the material injection|throwing-in apparatus which concerns on this embodiment from the upper side.

Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. In addition, the following embodiments do not limit the invention according to each claim, and not all combinations of features described in the embodiments are essential for the solution of the invention. .

1 and 2 are side views schematically showing the schematic configuration of the material charging device according to the present embodiment. In particular, FIG. 1 shows the initial state before the hammer of the material throwing device operates, and FIG. 2 shows the state after the hammer has performed the thrusting action.

As shown in FIGS. 1 and 2, the material charging device 10 according to this embodiment has a stage portion 11, a holding cylinder 21, a hammer 31, and an air cylinder 41 as a driving portion of the present invention. is configured as

The stage portion 11 has a mounting surface 12 on which a strontium billet 23, which is the material of the present invention, is mounted. The mounting surface 12 is formed as a horizontal surface so that the strontium billet 23 can move smoothly on the mounting surface.

The holding tube 21 is a tubular member arranged above the mounting surface 12 of the stage section 11 . The holding tube 21 is configured to accommodate a plurality of strontium billets 23 in a state in which they are stacked inside a tubular shape. That is, the holding cylinder 21 of the present embodiment can hold a plurality of strontium billets 23 stacked vertically upward with respect to the mounting surface 12 of the stage portion 11 .

The strontium billet 23, which is the material of the present invention, is a member formed in a so-called truncated cone shape by cutting a cone along a plane parallel to the bottom surface and removing the small cone portion.

The hammer 31 is placed horizontally with respect to the mounting surface of the stage portion 11 against the lowermost strontium billet 23 a positioned on the mounting surface of the stage portion 11 among the plurality of strontium billets 23 held in the holding cylinder 21 . It is a member that gives a pushing force in the direction

The air cylinder 41 is a member that functions as a driving portion that exerts a driving force for the hammer 31 to perform a horizontal projecting operation and a retracting operation with respect to the mounting surface 12 of the stage portion 11 . That is, by issuing an operation command to the air cylinder 41, the hammer 31 of the present embodiment projects toward the lowermost strontium billet 23a positioned on the mounting surface of the stage portion 11 (the state in FIG. 2). ) and a pullback operation (state shown in FIG. 1).

With the configuration as described above, the material charging device 10 according to the present embodiment protrudes a plurality of stacked strontium billets 23 vertically upward from the mounting surface 12 of the stage section 11, The strontium billets 23 can be sequentially put into a melting furnace (not shown).

The basic configuration of the material charging device 10 according to this embodiment has been described above. Next, by adding FIGS. 3 to 6 to the reference drawings, the characteristic configuration of the material charging device 10 according to the present embodiment will be described.

Here, FIG. 3 is a side view showing the material charging device according to the comparative example, showing a state in which the hammer protrudes. Also, FIG. 4 is a side view for explaining significant features of the hammer according to this embodiment. Furthermore, FIG. 5 is a side view showing the material charging device according to the comparative example, showing a state in which the hammer is pulled back. Furthermore, FIG. 6 is a plan view of the material charging device according to the present embodiment when viewed from above.

First, as shown in FIGS. 1, 2 and 4, the hammer 31 of the present embodiment has a protruding portion 32 which is the front upper portion of the hammer 31 and protrudes forward in the direction in which the thrusting action proceeds. ing.

Here, as in the comparative example shown in FIG. 3, when the hammer 131 is formed in a simple cubic shape having a square shape when viewed from the side, the hammer 131 hits a position below the strontium billet 23 having a truncated cone shape. become. In this case, when the strontium billet 23 is moved in the projecting direction, the forward direction is lifted up and caught in the holding cylinder 21, so that the strontium billet 23 may not be put into the melting furnace normally. This is because a repulsive force against the gravity applied to the strontium billet 23 acts, or the force ε that pushes the strontium billet 23 is caught on the lower surface of the strontium billet 23 or the fine unevenness of the mounting surface 12 of the stage section 11 . It is thought that this is because the buoyancy force β that causes the strontium billet 23 to float upward is generated. It has also been found that this phenomenon is particularly likely to occur when only one strontium billet 23 remains in the holding cylinder 21 .

Next, with reference to FIG. 4, significant features of the hammer 31 according to this embodiment will be described. In FIG. 4, the hammer 31 of the present embodiment is indicated by a solid line, and the conventional cubic hammer 131 according to the comparative example is indicated by a broken line. By using FIG. 4, the operating state of the hammer 31 of the present embodiment having the projecting portion 32 indicated by the solid line and the operating state of the conventional cubic hammer 131 indicated by the broken line will be described. First, in FIG. 4, the point at which the buoyancy β is generated with respect to the strontium billet 23 is indicated by symbol A. As shown in FIG. The hammer 31 having the projecting portion 32 and the hammer 131 not having the projecting portion 32 are different from each other in the hammer 31 according to the present embodiment, as indicated by points _B1 and _B2 , which are positions at which the strontium billet 23 is hit. Since the strontium billet 23 hits the position above the strontium billet 23 (point B ₁ ), the line of action B ₁ -A and B ₂ -A connecting point B ₁ or point B ₂ and point A has an angular slope. Like θ ₁ and θ ₂ , the angle θ ₁ is greater than the angle θ ₂ . With respect to the force ε that pushes the strontium billet 23, the force α that is the component force in the direction of the line of action is α ₁ =εcos θ ₁ in the case of the present embodiment, and α ₂ =εcos θ ₂ in the case of the comparative example. . Furthermore, the force γ acting as the reaction force that presses the strontium billet 23 against the buoyancy β that lifts the strontium billet 23 is γ ₁ =α ₁ sin θ ₁ in the case of the present embodiment, and γ ₂ = α ₂ sin θ ₂ . If the reaction force γ is greater than the buoyant force β, the strontium billet 23 does not float, but as shown in FIG. Since the slope of the line of action B ₁ -A is greater in the case of the hammer 31 of the present embodiment than in the case of the comparative example, the force γ ₁ is greater than the force γ ₂ . Therefore, according to the hammer 31 of the present embodiment, it is possible to suitably prevent the strontium billet 23 from floating. It is possible to prevent the occurrence of

In addition, as shown in FIGS. 1, 2 and 4, the hammer 31 of the present embodiment has an upper surface 33 that slopes downward toward the front in the advancing direction of the thrusting action. The strontium billet 23 (23b) to be ejected next time is placed on the inclined surface 33 when the ejection operation is switched to the retraction operation.

Here, as in the comparative example shown in FIG. 5, in the case where the hammer 131 is formed in a simple cubic shape that is square in side view, the strontium billet 23 is pulled by the hammer 131 when the hammer 131 performs a pullback operation. As a result, the user is dragged backward (toward the left side of the paper surface of FIG. 5). In this way, if the strontium billet 23 (23b) to be ejected next time is set backward, there is a possibility that the next ejecting operation will not be able to perform a smooth ejecting operation. .

On the other hand, as in the present embodiment shown in FIGS. 1, 2 and 4, the upper surface of the hammer 31 is formed to have an inclined surface 33 that slopes downward toward the front in the advancing direction of the thrusting action. , when the hammer 31 pulls back, the strontium billet 23 is pulled by the hammer 31 and dragged rearward, thereby minimizing the amount of deviation. In other words, with the hammer 31 of the present embodiment having the inclined surface 33, the strontium billet 23 can be set at an appropriate position on the mounting surface 12 of the stage portion 11 without shifting.

Further, in the material charging device 10 according to the present embodiment, as shown in FIG. 6, a rearward direction of the strontium billet 23 is provided below the holding cylinder 21 and in a direction opposite to the projecting direction of the strontium billet 23. A stopper pin 51 is provided to prevent movement. By providing the stopper pin 51, the installation position of the strontium billet 23 (23b, 23c, . becomes possible.

Furthermore, in the material charging device 10 according to the present embodiment, at least the mounting surface 12 on which the strontium billet 23 is mounted in the stage portion 11 and at least the inclined surface 33 in the hammer 31 have a friction coefficient lower than that of the strontium billet 23. It is preferably made of a low friction coefficient member. Furthermore, as for the hammer 31 , it is more preferable that the protruding portion 32 is made of a low friction coefficient member having a friction coefficient lower than that of the strontium billet 23 . Materials such as engineering plastics and stainless steel can be used for this low friction coefficient member. By using a material such as engineering plastic or stainless steel with a low coefficient of friction for the part that contacts the strontium billet 23, the strontium billet 23 can be protruded more stably and reliably. It is possible to provide the material charging device 10 that can be reliably charged to.

Although the preferred embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the scope described in the above embodiments. Various changes or improvements can be added to the above embodiments.

For example, in the material charging device 10 according to the present embodiment described above, a configuration example is shown in which the hammer 31 protrudes from the strontium billet 23 and is pulled back. However, for the hammer of the present invention, it is also possible to employ a mechanism that performs a rotating motion to strike out the strontium billet 23 in the horizontal direction.

Further, for example, in the material charging device 10 according to the present embodiment described above, the case where the air cylinder 41 is used as the driving portion of the present invention is exemplified. However, as for the drive section of the present invention, any drive section may be used as long as it can realize the operation of the hammer 31 described in the above embodiment.

Further, for example, in the material charging device 10 according to the present embodiment described above, the case of using strontium as the material of the present invention was illustrated, but the material of the present invention may be of any kind. Further, the shape is not limited to a truncated cone shape, and any shape can be adopted within a range in which the same effects as those of the above-described embodiments can be obtained.

It is clear from the description of the scope of the claims that forms with such modifications or improvements can also be included in the technical scope of the present invention.

10 material charging device 11 stage part 12 mounting surface 21 holding cylinder 23, 23a, 23b, 23c, 23n strontium billet 31 hammer 32 protrusion 33 inclined surface 41 air cylinder 51 stopper pin 131 Hammer (comparative example).

A material charging device (10) according to the present invention has a mounting surface (12) on which a material (23) is mounted, and a stage portion (11) on which the material (23) moves on the mounting surface (12). ), a holding cylinder (21) for holding a plurality of the materials (23) stacked vertically upward with respect to the mounting surface (12) of the stage (11), and the holding cylinder (21 ), the lowermost material (23 (23a)) positioned on the mounting surface (12) of the stage (11) among the plurality of materials (23) held by the stage (11 ), the hammer (31) is horizontal to the mounting surface (12) of the stage (11). By providing a drive unit (41) that exerts a driving force for performing a projecting operation and a pulling back operation in a direction, the stage unit (11) can be vertically upwardly moved with respect to the mounting surface (12) of the stage unit (11). A material charging device (10) for sequentially charging a plurality of stacked materials (23) into a melting furnace, wherein the hammer (31) is an upper front portion of the hammer (31), and the thrusting action progresses. The material (23) has a projecting portion (32) projecting forward in the direction, and the material (23) is located below the holding cylinder (21) and in a direction opposite to the projecting direction of the material (23). It is characterized in that a stopper pin (51) is provided to prevent rearward movement .

Further, in the material charging device (10) according to the present invention, at least the mounting surface (12) on which the material (23) is mounted on the stage (11) and at least the inclined surface (12) on the hammer (31) 33) is formed of a low friction coefficient member having a friction coefficient lower than that of the material (23) , and the low friction coefficient member can be engineering plastic or stainless steel .

Claims (4)

a stage unit having a mounting surface on which a material is mounted and on which the material moves on the mounting surface;
a holding cylinder that holds a plurality of the materials stacked vertically upward with respect to the mounting surface of the stage;
A thrusting force is applied in a horizontal direction to the mounting surface of the stage section to the lowermost material positioned on the mounting surface of the stage section among the plurality of materials held in the holding cylinder. a hammer to give,
a driving unit that exerts a driving force for causing the hammer to perform a horizontal thrusting operation and a pulling back operation with respect to the mounting surface of the stage unit;
By providing
A material charging device for sequentially charging a plurality of materials stacked vertically upward with respect to the mounting surface of the stage into a melting furnace,
The material throwing device, wherein the hammer has a protruding portion which is an upper front portion of the hammer and protrudes forward in a direction in which the pushing action proceeds. In the material charging device according to claim 1,
A material throwing device, wherein the upper surface of the hammer has an inclined surface that slopes downward toward the front in the direction in which the hammer projects out. In the material charging device according to claim 2,
A material loading device, wherein at least the mounting surface of the stage portion on which the material is placed and at least the inclined surface of the hammer are formed of a low friction coefficient member having a friction coefficient lower than that of the material. . In the material charging device according to any one of claims 1 to 3,
A material loading device, wherein a stopper pin is provided at a position below the holding cylinder and in a direction opposite to a projecting direction of the material to prevent rearward movement of the material.

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