KR101514050B1 - Laddle for casting equipped with handle safely cuppled - Google Patents

Abstract

The present invention relates to a casting ladle and, more specifically, to a casting ladle capable of safely fastening a handle rod wherein a handle rod provided to manually pour molten metal in a mold can easily be removed from a ladle body, and a combined handle rod can be prevented from being separated from the ladle body in a situation where an operator does not intend. According to the present invention, the casting ladle capable of safely fastening a handle rod comprises: a cylindrical body having an outlet; an injection hole connected to the outlet of the body, and guiding the molten metal to be discharged; a fastening hole protruding from the outer surface of the body; a handle rod inserted into the fastening hole; and a fastening means which restricts or allows the handle rod to be separated from the fastening hole.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ladle for casting,

The present invention relates to a casting ladle, and more particularly, to a ladle for casting, which has an injection port for guiding the discharge of the molten metal so as to facilitate injection of the molten metal into the mold and reducing the contact area of the discharged molten metal with the air, The present invention relates to a casting ladle which can be securely fastened and detached, and which can be securely fastened to a handle bar which can prevent the handle bar from being detached in an unintended state in a fastened state when the handle bar used for manually injecting the molten metal into the mold is easily fastened and separated.

The casting is performed by injecting molten metal into a mold and cooling it to produce a cast product corresponding to the space in the mold.

Casting is generally carried out by melting metal in a melting furnace to make molten metal, filling molten metal in a melting furnace into a ladle, bringing the molten metal into a mold, injecting the molten metal into a mold,

In order to carry the ladle with the molten metal and inject the molten metal into the mold, a handle bar is connected to the ladle. The handle bar is fixed to the ladle and becomes bulky, making it difficult to store. It will interfere.

Therefore, it is preferable that the handle bar can be detachably attached to the ladle body.

As a method of detachably connecting the handle bar to the ladle body, a male and female coupling method will be mainly used. In a simple male and female coupling method, the handle bar can be separated from the ladle body in an unintended situation. In unintentional situations, when the handle bar is removed, the ladle body may fall to the floor and the molten metal poured may cause safety accidents.

Thus, there is a need for a means that can be easily coupled to the ladle body in a male and female coupling manner, but to prevent the handle bar from being disengaged in unintended circumstances. However, in the prior art in which the handle bar can be attached and detached, there is no such means.

The ladle serves as a medium for transferring the molten metal from the melting furnace to the mold, but also influences the quality of the cast product.

More specifically, the molten metal is injected into the mold while maintaining the maximum temperature, and the smaller the amount of air infiltrated into the molten metal, the better the quality of the molten metal. That is, the contact area with air is minimized until the molten metal of the ladle is injected into the mold, and the quality of the molten metal is improved as the flow rate of the molten metal injected into the mold is kept constant.

The main ladle usually uses a cylindrical container. The cylindrical ladle has no separate part for guiding the discharge of the molten metal to the opening of the upper part, so the operator should pay attention to which part of the ladle the molten metal will be discharged from. When the ladle is tilted in order to inject the molten metal, the molten metal spreads along the opening of the ladle, thereby increasing the contact area with air, cooling the discharged molten metal, and changing the flow rate of the discharged capacity according to the slope of the ladle.

In summary, the cylindrical ladle requires considerable care to inject the molten metal into the mold, and the area of contact with the air before the molten metal is injected into the mold is large, that is, the temperature storage stability of the molten metal is poor. A large amount of air (air bubbles) penetrates into the molten metal due to the generation of micro vortices in accordance with the difference in the flow rate speed, and the quality of the cast product is deteriorated.

Therefore, the patent application No. 10-0715363 entitled " casting ladle and casting method using the same "discloses a casting ladle and a casting method using the casting ladle, wherein the opening of the upper part of the cylindrical ladle is closed and the nozzle is installed on the lower floor, Flow rate changes are minimized.

However, in the above-mentioned No. 10-0715363, "ladle for casting ladle and casting method using the same ", the manufacturing cost of ladle is increased by using expensive nozzles and even though much effort is paid to maintenance of the nozzle, It is difficult to prevent clogging by the molten metal, and when the flow path of the nozzle is clogged, disposal of the ladle together is considerable waste. Therefore, it is preferable that only the nozzle is replaceable. In this case, It is not easy to seal the nozzle, and if the molten metal penetrates into the engagement gap, there is a problem that the nozzle can not be replaced.

The present invention is conceived to solve the problem of the conventional casting ladle according to the prior art, and it is an object of the present invention to provide a ladle body which can be easily attached to and detached from a ladle body provided for manually injecting molten metal into a mold, Which can prevent the ladle body from being separated from the ladle body in an unintended situation.

In addition, as an invention devised to solve the problems of a general cylindrical ladle and a ladle according to Japanese Patent Application No. 10-0715363, it is known that the molten metal injected into the mold from the ladle is excellent in the temperature storability, It is another object of the present invention to provide a casting ladle which is capable of minimizing the occurrence of cracks, thereby improving the quality of the cast product, increasing the manufacturing cost according to the introduced components, and securely fastening the handle bar with excellent product competitiveness. .

In order to achieve the above object, according to the present invention,

A cylindrical body having a discharge port occupying more than half of its length in the longitudinal direction;

An injection port connected to the discharge port of the body and having a flow path of the forward throttle structure to guide the discharge of the molten metal;

A fastener protruding from the outer surface of the body;

A handle bar inserted into the fastener;

And fastening means for restricting or allowing the pull rod to separate from the fastener,

The fastening means

An elastic member including a circular twist portion disposed in an inner hollow of the fastener and a pressing portion integrally connected to the circular twist portion and disposed outside through the fastener;

An insertion portion provided in front of the pull rod inserted into the hollow of the fastener and having a diameter larger than an inner diameter of the circular twist portion,

And a fitting groove formed on an outer periphery of the insertion portion and into which the circular twist portion is fitted,

When the handle bar is inserted into the fastening hole and fastened, the circular twist portion is fitted into the fitting groove to restrict the separation of the handle bar. When the pressing portion is pushed, the circular bar is released from the fitting groove by the expansion of the inner diameter of the circular- .

Further, the elastic member may further include a bend portion integrally connected to the circular twist portion,

And an inner groove formed on the inner surface of the fastening hole to prevent rotation of the elastic member.

The ladle of the present invention, which can be securely fastened to the handle bar according to the present invention, can be easily fastened and used when the ladle is used, and when the handle bar is unintentionally used, It is possible to easily separate and store the handle bar after use, and also it is possible to manufacture a high-quality cast product because of excellent temperature-keeping ability of the molten metal and small change in flow rate of the molten metal, This invention relates to a ladle for casting which can be fastened and disassembled to the body of the injection port and can be securely fastened to a handle bar which is easy to manage maintenance and storage and is very useful for industrial development.

1 is a perspective view of a casting ladle according to the present invention;
Fig. 2 is an exploded perspective view and cross-sectional view showing a fastening means for fastening the pull rod added to the ladle of Fig. 1; Fig.
Fig. 3 is an exploded perspective view and cross-sectional view of an assembling means for assembling the injection port added to the ladle of Fig. 1; Fig.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a ladle for a cabin according to the present invention; FIG.

Before describing the present invention in more detail with reference to the drawings,

While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

As shown in FIG. 1, the ladle according to the present invention includes a body 10 and an injection port 20, and includes a fastener 40, a handle bar 50, and a fastening means 60 And further includes an assembling means 30 for assembling the injection port 20 to the body 10 as shown in FIG.
For reference, the body 10 and the injection port 20 of the ladle according to the present invention can be manufactured by a numerical control processing technique, for example, a milling process, a machining process, a lathe process, and a CNC process.

The body 10 has a cylindrical structure capable of obtaining an optimal internal volume with respect to the amount of the magnetic material, and is made of a metal material capable of withstanding the high temperature of the molten metal (that is, molten metal) filled therein.

First, the fastener 40, the handle bar 50, and the fastening means 60 will be described with reference to Fig.

The fastener 40 protrudes from the outer surface of the body 10 and a hollow 41 is formed therein so that the pull rod 50 can be inserted and fastened. It is preferable that the fastener 40 has an angular structure since the fastener 40 needs to be held by the handle bar 50 and tilted. A square pipe can be used as the fastener 40 having an angular structure.

The handle bar (50) is inserted into the hollow (41) of the fastener (40) and fastened. The front of the handle bar 50 has a square structure corresponding to the shape of the hollow 41 of the fastener 40 and a handle to be gripped by an operator is provided at the rear.

The fastening means 60 restricts unintentional disengagement of the handle bar 50 inserted into the fastener 40 and allows for easy separation when intentionally disengaging.

The fastening means 60 includes an elastic member 61, an inserting portion 63, a fitting groove 65, an insertion groove 67, and the like.

The elastic member 61 includes a circular twist portion 611, a pressing portion 613, and a bent portion 615.

The elastic member 61 is formed by folding a metal wire having excellent elasticity one-at-a-time and bending both end portions so that the circular twisted portion 611 is formed at the center, and the pressing portion 613 and the bent portion 615 .

The circular twist portion 611 is disposed in the inner hollow 41 of the fastener 40 and the pressing portion 613 is disposed outside the fastener 40. The bent portion 615 And is caught and engaged in the catch groove 67 formed on the inner surface of the fastener 40.

A movement hole 68 is formed on one side wall of the fastening hole 40 so as to allow the elastic member 61 to be housed in the fastening hole 40 so that the round hole 611 and the bent portion 615 The elastic member 61 can be moved along the movement hole 68 while being inserted into the hollow 41 and formed in the connection hole 69 in the vertical direction of the movement hole 68, A minute protrusion 69a for reducing the width is protruded in the hole so that the elastic member 61 moved to the connection hole is not released.

The catch groove (67) formed on the inner surface of the fastener (40) has a jar structure so that the bent portion (615) is held in a detentable manner and is not easily detached.

The bent portion 615 of the holding groove 67 is positioned such that the hole formed by the circular twisted portion 611 is directed toward the hollow 41 of the fastening hole 40, Thereby allowing the portion 63 to be inserted without any difficulty. That is, the circular twist portion 611 is not arbitrarily rotated so that the hole formed by the circular twist portion 611 coincides with the hollow 41 direction of the fastener 40.

The insertion portion 63 is provided in front of the handle bar 50 so as to be inserted into the hollow 41 of the fastening hole 40 and to be urged toward the inside of the round twist portion 611 of the elastic member 61, Is inserted in the fitting manner. That is, the outer diameter of the insertion portion 63 is longer than the inner diameter of the circular twist portion 611, so that the insertion portion 63 is inserted into the circular twist portion 611 in an interference fit manner. At this time, the elastic member 61 has elasticity so that the inner diameter of the circular twisted portion 611 can be easily expanded, and the insertion portion 63 can be easily inserted.

The fitting groove 65 is formed in the outer periphery of the insertion portion 63, and the circular twist portion is inserted and engaged.

The process of fastening the pull rod 50 to the fastener 40 through the fastening means 60 having the above-described structure and the process of separating the pull rod 50 from the fastener 40 will be briefly described below.

First, in the case of fastening the handle bar 50, when the front of the handle bar 50 is pushed into the hollow 41 of the fastener 40, the insertion part 63 passes through the circular twisted part 611 At this time, the inner diameter 611 of the circular twist portion naturally contacts with the insertion portion to allow advancement of the insertion portion, and the insertion portion 63 is inserted at a predetermined distance or more so that the round twist portion is inserted into the insertion portion 63 formed on the outer surface of the insertion portion 63 The inner diameter of the circular twisted portion 611 is reduced by the resilient restoring force so as to be seated in the fitting groove 63 to be engaged with the insertion groove 63 so that the insertion portion 63 can not be retreated, And is fastened to the sphere 40.

Next, when the handle bar 50 is separated from the fastening tool 40, when the worker presses the pressing portion 613 of the elastic member 61 with a finger, the inner diameter of the round brace portion 611 is expanded, The tab 611 is disengaged from the fitting groove 65. When the pull rod 50 is pulled in this state, the pull bar 50 is separated from the fastener 40 without any interference.

Hereinafter, the assembling means 30 for assembling the injection port 20 and the injection port 10 to the body will be described with reference to FIGS. 1 and 3. FIG.

The body 10 is formed with a discharge port 11 through which the injection port 20 is connected to discharge the molten metal stored therein.

The outlet 11 occupies about half or more (about two-thirds) in the vertical direction of the body 10 and occupies 1/4 to 1/3 in the left and right outer circumferential direction of the body 10 at the upper end, And has a structure in which the left and right width gradually narrows from the top to the bottom.

The injection port 20 is connected to the discharge port 11 of the body 10 and provides a flow path 21 through which the molten metal contained in the body 10 is discharged to the outside (that is, the injection port 20 of the mold).

The inlet of the injection port 20 has a shape corresponding to the discharge port 11 and is connected to the discharge port 11, and the outlet at the front has a U-shaped shape having a narrow width. That is, the flow path 21 of the injection port 20 has a forward-rearward bulging structure so that a large amount of molten metal is introduced at the rear entrance, while the molten metal is discharged at the forward outlet in the form of a continuous water stream It is possible to easily inject the molten metal into the injection port 20 of the mold and reduce the contact area of the molten metal with the air so as to minimize the temperature change during the movement of the molten metal from the body 10 to the mold It is easy to determine the initial flow rate of the solvent to be injected into the mold so that the change in the flow velocity of the discharged molten metal is small.

The lower portion of the injection port 20 has a curved rounded structure. The length of the upper end of the upper portion of the injection port 20 (i.e., the distance from the upper inlet to the outlet) has a length corresponding to the diameter of the body 10, (About 1/4 to 1/3 in the upper and lower lengths of the body 10), and the left and right lengths of the front outlet at the upper end are about the same length in the left and right lengths of the rear inlet One third.

The structure of the injection port 20 allows the molten metal of the body 10 to be discharged to the outside through the flow path 21 of the injection port 20 even if the body 10 is tilted a little, It is easy to control the amount of molten metal at the initial stage of injection by suppressing the infiltration of air into the molten metal (that is, bubbling in the molten metal) due to the small change in the rate of flow of the molten metal discharged. Thus improving the productivity and quality of the main product.

It is preferable that the injection port 20 be integrally formed with the body 10 and the body 10 and the injection port 20 may be integrally formed with each other by a method such as a pressing process, .

Thus, the body 10 and the injection port 20 are manufactured separately, and the injection port 20 is coupled to the body 10.

Welding can be used to bond the injection port 20 to the body 10. [ However, since the injection port 20 protrudes from the body 10 to a great extent, the space occupies a lot of space in the case of being fixed to the body 10 by welding, and an external force is applied to the injection port 20 during transportation.

Thus, the present invention allows the injection port 20 to be detachably assembled to the body 10 through the assembly means 30.

2, the assembling means 30 for assembling the injection port 20 to the body 10 includes a contact portion 31, an engagement panel 32, a seat block 33, a pressing pin 34, An expansion material 35, a ring portion 36, and a locking portion 37. [

The contact portion 31 is formed protruding forward along the rim of the body 10 forming the discharge port 11.

The contact portion 31 is integrally formed with the body 10 by press working, and the upper surface of the injection port 20 is closely contacted to the lower surface.

The latching panel 32 is coupled to the body 10 so as to be spaced a predetermined distance along the contact portion 31 and is formed in a shape of a letter A so that the body 10 and the seating groove 33h .

The seating block 33 is coupled to the rear end of the injection port 20 so as to protrude outward (lower part is in the downward direction, right and left in the left and right direction) and is seated in the seating groove 33h provided in the lower part. The left and right mounting recesses 33h are not easily seated in the mounting recesses 33h provided on the right and left sides, and the drawn pressing pins 34 are seated.

The vertical length of the seat block 33 (referenced to the seat block 33 coupled to the lower portion of the injection port 20) is shorter than the interval between the contact portion 31 and the engagement panel 32, Has a length corresponding to the front-back direction width of the seating groove 33h. Thus, the seating block 33 is inserted and seated in the seating groove 33h.

The pressing pin 34 is coupled to the seating block 33 in such a manner that the pressing pin 34 can be pulled out to push the bottom of the holding panel 32 forming the seating groove 33h to push up the inlet 20 (Inner surface) of the injection port 20 is brought into close contact with the lower surface (outer surface) of the contact portion 31 so that both the left and right sides are urged inward, and the seat block 33 and the pressing pin 34 So that it can be separated from and separated from the seating groove 33h.

The expansion material 35 is embedded in the sealed space of the seating block 33 and thermally expands. That is, the volume increases as the temperature rises, and the volume decreases as the temperature rises. As the volume expands or decreases, the pressing pin 34 forming one side wall of the closed space is pushed or pulled in.

The expansion material 35 may be ethanol, glycerin, mercury, or the like.

When the high temperature (about 700-800 degrees) of the molten metal is filled into the body 10, the expanding material 35 which has received the heat of the molten metal thermally expands and pushes the pressing pin 34 out. The pressing pin 34 drawn out from the seating block 33 contacts and presses the bottom of the latch panel 32 to closely contact the injection port 20 with the contact portion 31. The pressing pin 34 of the seating block 33 provided at the lower portion of the seating block 33 moves up and down the inlet 20 and the pressing pin 34 of the seating block 33 provided at the left and right sides, (The entire upper surface of the injection port 20 is brought into close contact with the entire outer surface (lower surface) of the contact portion 31).

The lower end of the drawing path pin 34 of the pressing pin 34 and the upper end of the injection hole 20 connected thereto are pressed against the contact portion 31 and the engaging panel 32, And the pressing pin 34 drawn out from the seating block 33 provided at both sides of the holding block 33 is engaged with the holding panel 32, But the force may be insufficient to stably fix the injection port 20 to the body 10. [

The present invention is characterized in that the annular portion 36 is formed on both sides of the upper portion of the contact portion 31 and the engaging portion 37 is inserted into the annular portion 36 at the upper portion of the seating block 33, So that the engaging portion 37 is inserted into and engaged with the annular portion 36 when the draw-out port 20 of the pressing pin 34 is lifted so that the stability of the fixing of the injection port 20 is maintained . It is preferable that the lower portion of the isolating portion 36 is naturally inserted into the annular portion 36 so that the engagement portion 37 ascending and descending such that the inner diameter is larger than the outer diameter of the engagement portion 37.

While the present invention has been described with reference to the accompanying drawings, it is to be understood that the scope of the present invention is not limited to the above embodiments and various changes and modifications may be made without departing from the scope of the present invention. Modifications are to be construed as falling within the scope of protection of the present invention.

10: Body 11: Outlet
20: inlet 21:
30: Assembly means 31:
32: Retaining panel 33: Seated block
34: pressure pin 35: expanding material
36: ring part 37:
40: fastener 41: hollow
50: handle bar 60: fastening means
61: elastic member 63:
65: fitting groove 67: anchoring groove

Claims (2)

A cylindrical body having a discharge port occupying more than half of its length in the longitudinal direction;
An injection port connected to the discharge port of the body and having a flow path of the forward throttle structure to guide the discharge of the molten metal;
A fastener protruding from the outer surface of the body;
A handle bar inserted into the fastener;
Fastening means for restricting or permitting said pull rod to separate from said fastener;
And an assembly means for assembling and coupling the injection port to the body,

The fastening means
An elastic member including a circular twist portion disposed in an inner hollow of the fastener and a pressing portion integrally connected to the circular twist portion and disposed outside through the fastener;
An insertion portion provided in front of the pull rod inserted into the hollow of the fastener and having a diameter larger than an inner diameter of the circular twist portion,
And a fitting groove formed on an outer periphery of the insertion portion and into which the circular twist portion is fitted,
When the handle bar is inserted into the fastening hole and fastened, the circular twist portion is fitted into the fitting groove to restrict the separation of the handle bar. When the pressing portion is pushed, the circular bar is released from the fitting groove by the expansion of the inner diameter of the circular- Allow,
Wherein the elastic member further includes a bend portion connected to and joined to the circular twist portion,
And an inner groove formed on the inner surface of the fastener so as to prevent rotation of the elastic member.

The assembling means
A contact portion protruding along the discharge port of the body,
A latch panel spaced apart from the contact portion and coupled to the body, the latch panel forming a body and a seating groove;
A seating block coupled to a rear end of the injection port and disposed on an extension of the seating groove,
A pressing pin which is coupled to the seating block so as to be pulled out and seated in the seating groove,
And an expansion material embedded in the seating block and expanding upon heating,
When the molten metal is injected into the body, the pressing pin drawn out due to the expansion of the inflating material presses the bottom of the latching panel so that the injection port is raised so as to be tightly coupled to the contact portion. Main ladle. delete

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