KR101834333B1

KR101834333B1 - pressure forming device having exchangeable cores

Info

Publication number: KR101834333B1
Application number: KR1020160001909A
Authority: KR
Inventors: 김홍용; 서성보; 김화민; 손선영
Original assignee: (주)이수
Priority date: 2016-01-07
Filing date: 2016-01-07
Publication date: 2018-03-05
Also published as: KR20170082752A

Abstract

A core interchangeable press forming apparatus is disclosed. In one embodiment, the core-interchangeable press-molding apparatus comprises a first core including a first groove on one surface thereof, a second core including a second groove on a surface thereof having a shape corresponding to the first groove, And a second plate formed with a first plate having a first seating portion on which one core can be mounted and a second seating portion spaced apart from the first plate and having a second seating portion on which the second core can be mounted. The first core and the second core are mounted on the first plate and the second plate such that the first groove and the second groove face each other. Wherein the first press-molded material disposed in the first groove or the second groove is pressed by the first core and the second core, which are in close contact with each other by a first external force applied to the first plate and the second plate, . In this case, the first core and the second core are replaceable.

Description

[0001] The present invention relates to a core-forming pressure-

BACKGROUND OF THE INVENTION [0002] The techniques disclosed herein relate to a press-forming apparatus, and more particularly, to a core-interchangeable press-forming apparatus.

Rubber material is a material with superior sealing, elasticity and shock absorbing properties compared with plastic, metal and ceramic materials. It is an indispensable material for transport industry, electrical and electronic industry, medical bio industry, energy industry, It is an important material.

Packing is required in areas where airtightness is required in order to prevent leaks and leakage of gas, fluid, etc., and packing of rubber materials is now widely used. There are many types of packing, but O-rings that make the shape of the donut are used now. Such an O-ring is generally manufactured by an injection molding method using a mold or a method of attaching a band type material to the end of a band through a manual operation of an operator.

In the case of large-scale production of O-rings of standardized size, it may be suitable to produce by injection molding. However, in case of producing a small amount of various unillustrated O-rings, it may be effective to produce through manual work of an operator rather than an injection molding method.

In the latter method of producing the O-rings through the manual operation of the operator, the operator joins the end of the band in advance and then the O-ring of the desired shape is formed through the press forming process, or the band ends are overlapped with each other, And the O-ring of the desired shape is formed at the same time. For this, a molding die having a molding groove with a desired shape is required.

Conventional molding dies generally consist of an integral top plate mold and a bottom plate mold each having a forming groove. Therefore, in the case of conventional molding dies, when the top mold or the bottom mold is damaged through the repeated molding process, there is a problem that the entire damaged mold must be disposed. In addition, in the case of an existing molding die, an O-ring molding operation can be performed only for a rubber material having a shape or size corresponding to a molding groove formed once the molding groove is formed in the upper plate mold and the lower plate mold. That is, it is difficult to change the shape or size of the rubber material that can be molded, and there is a problem in that it is ineffective to form a small amount of O-rings having various shapes or sizes.

The core-interchangeable press-forming apparatus disclosed in this specification can replace the cores used for O-ring molding, so that only corrupted cores can be replaced at the time of core damage, thereby reducing maintenance costs, and various shapes or sizes Which is effective for molding an O-ring having a desired thickness.

The prior art related to the o-ring molding apparatus is Korean Patent No. KR 10-0656699, " O-ring manufacturing apparatus and manufacturing method thereof, KR 20-0381774 for Korean registration office " Large O-ring ".

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a pressure molding apparatus which can replace a damaged core, The present invention provides a core-interchangeable press-molding apparatus capable of reducing the maintenance cost and effective for molding necessary amounts of O-rings having various various shapes or sizes through core replacement.

In one embodiment, a core interchangeable press forming apparatus is disclosed. The core-interchangeable press-molding apparatus includes a first core including a first groove on one side thereof, a second core including a second groove on a side thereof having a shape corresponding to the first groove, And a second plate formed with a first seating portion having a first seating portion and a second seating portion spaced apart from the first plate and capable of mounting the second core. The first core and the second core are mounted on the first plate and the second plate such that the first groove and the second groove face each other. Wherein the first press-molded material disposed in the first groove or the second groove is pressed by the first core and the second core, which are in close contact with each other by a first external force applied to the first plate and the second plate, . In this case, the first core and the second core are replaceable.

The core interchangeable press forming apparatus may further include a fourth core including a third core including a third groove on one surface and a fourth groove having a shape corresponding to the third groove on one surface. And the third core may be mounted on the first seating portion so as to be spaced apart from the first core. The fourth core may be mounted on the second seating portion so as to be spaced apart from the second core. The second press-molded material disposed in the third groove or the fourth groove is pressed by the third core and the fourth core, which are in close contact with each other by the first external force applied to the first plate and the second plate, The first press-molded material and the second press-molded material can be simultaneously press-formed by the first external force. The first groove and the third groove may have different sizes or different shapes. The third core and the fourth core are interchangeable.

The one surface of the first core and the one surface of the second core may further include a fifth groove formed apart from the first groove and a sixth groove formed apart from the second groove. The sixth groove may have a shape corresponding to the fifth groove. The third press-molded material disposed in the fifth groove or the sixth groove is pressed by the first core and the second core which are in close contact with each other by the first external force applied to the first plate and the second plate, The first press-molded material and the third press-molded material can be simultaneously press-formed by the first external force.

Wherein the first core and the second core each have a first guide portion formed on the one surface of the first core so as to be spaced apart from the first groove and a second guide portion spaced apart from the second groove, And a first coupling part formed on the one surface of the second core to have a shape corresponding to the first guide part. The first guide portion and the first fastening portion may be coupled to each other by the first external force. In this case, the first core and the second core may be in close contact with each other while being aligned through the coupling of the first guide portion and the first coupling portion by the first external force.

The core interchangeable press forming apparatus further includes a fifth plate including a seventh groove on one surface thereof and a third plate spaced apart from the second plate and having a third seating portion on which the fifth core can be mounted can do. The second seat portion may be formed by forming a through hole in the second plate. And an eighth groove having a shape corresponding to the seventh groove may be formed on the other surface of the second core. The second core may be mounted on the second plate by detachably fixing the side surface of the second core to the through hole of the second plate. And the fifth core may be mounted on the third plate such that the seventh groove faces the eighth groove. The fourth press-molded material disposed in the seventh groove or the eighth groove is pressed by the second core and the fifth core, which are in close contact with each other by a second external force applied to the second plate and the third plate, Can be molded. The fifth core is interchangeable.

Wherein the fifth core and the second core each have a second guide portion formed on the one surface of the fifth core so as to be spaced apart from the seventh groove and a second guide portion spaced apart from the eighth trench and corresponding to the second guide portion And a second coupling part formed on the other surface of the second core so as to have a shape corresponding to the second guide part. The second guide portion and the second fastening portion may be coupled to each other by the second external force. The fifth core and the second core may be in close contact with each other while being aligned through the engagement of the second guide portion and the second fastening portion by the second external force.

The first external force and the second external force may be provided by an external force applied to the first plate and the third plate. Wherein the first press-molded material is press-formed by the first core and the second core which are in close contact with each other by the external force applied to the first plate and the third plate, and the fourth press- 1 plate and the third plate, the second core and the fifth core being in close contact with each other by the external force exerted on the third plate and the third plate, so that the first press-molded material and the fourth press- It can be pressure-molded.

The core-interchangeable press-forming apparatus disclosed in this specification can replace the cores used for O-ring molding, so that only damaged cores can be replaced at the time of core damage, thereby reducing maintenance costs.

Further, the core interchangeable press forming apparatus disclosed in this specification can mount a core having a forming groove of various shapes or sizes on the plate through the replacement of the core. Accordingly, the core-interchangeable press forming apparatus disclosed in this specification can effectively form the required amount of O-rings having various shapes or sizes through the replacement of the cores.

Further, the core interchangeable press forming apparatus disclosed in this specification can stack a plurality of plates on which a core is mounted. Through this, it is possible to effectively increase the production amount of the O-ring which can be formed through one press molding.

The foregoing provides only a selective concept in a simplified form as to what is described in more detail hereinafter. The present disclosure is not intended to limit the scope of the claims or limit the scope of essential features or essential features of the claims.

1 is a conceptual diagram of a conventional press-molding apparatus and a core-interchangeable press-molding apparatus disclosed in this specification.
2 is a view for explaining a core-interchangeable press-molding apparatus disclosed in this specification;
3 is a view for explaining a forming groove formed in a core applied to a core interchangeable press forming apparatus disclosed in this specification;

Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the drawings. Like reference numerals in the drawings denote like elements, unless the context clearly indicates otherwise. The exemplary embodiments described above in the detailed description, the drawings, and the claims are not intended to be limiting, and other embodiments may be utilized, and other variations are possible without departing from the spirit or scope of the disclosed technology. Those skilled in the art will appreciate that the components of the present disclosure, that is, the components generally described herein and illustrated in the figures, may be arranged, arranged, combined, or arranged in a variety of different configurations, all of which are expressly contemplated, As shown in FIG. In the drawings, the width, length, thickness or shape of an element, etc. may be exaggerated in order to clearly illustrate the various layers (or films), regions and shapes.

When a component is referred to as being "positioned" to another component, it may include a case where the component is directly disposed on the other component as well as a case where an additional component is interposed therebetween.

When one component is referred to as being "mounted" to another component, it may include the case where the component is directly mounted on the other component as well as the case where additional components are interposed therebetween.

The description of the disclosed technique is merely an example for structural or functional explanation and the scope of the disclosed technology should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the rights of the disclosed technology should be understood to include equivalents capable of realizing the technical ideas.

It is to be understood that the singular " include " or " have " are to be construed as including the stated feature, number, step, operation, It is to be understood that the combination is intended to specify that it is present and not to preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosed technology belongs, unless otherwise defined. Terms defined in commonly used dictionaries should be interpreted to be consistent with meaning in the context of the relevant art and can not be construed as having ideal or overly formal meaning unless expressly defined in the present application.

Although the method for manufacturing the O-ring through the core-interchangeable press-forming apparatus disclosed in this specification has been described for the sake of convenience in the present specification, the present invention is not limited to the core- It will be obvious that a molding apparatus can be applied.

1 is a conceptual diagram of a conventional press-molding apparatus and a core-interchangeable press-molding apparatus disclosed in this specification. Fig. 1 (a) is a conceptual view of a conventional press-molding apparatus, and Fig. 1 (b) is a conceptual view of a core-interchangeable press-molding apparatus disclosed in this specification. 2 is a view for explaining a core-interchangeable press-molding apparatus disclosed in this specification; Figs. 2A and 2B show an example of a core-interchangeable press-molding apparatus of a two-stage structure, and Figs. 2C and 2D are examples of a core interchangeable press-molding apparatus of a three-stage structure. 3 is a view for explaining a forming groove formed in a core applied to a core interchangeable press forming apparatus disclosed in this specification;

1 (a), a conventional press-molding apparatus 10 includes a lower mold 12 and a upper mold 11 each having a first molding groove 13 and a second molding groove 13a do. The first forming groove 13 and the second forming groove 13a have shapes corresponding to each other. The conventional press molding apparatus 10 is a press molding apparatus in which the upper mold 11 and the lower mold 12 are brought into close contact with each other through an external force and the press molding material 20 ) Is pressed to produce an O-ring of a desired shape. Therefore, in the case of the conventional press-molding apparatus 10, when the upper mold 11 or the lower mold 12 is damaged through the repeated molding process, the entire damaged mold must be disposed. When the first molding groove 13 and the second molding groove 13a are formed in the lower mold 12 and the upper mold 11 in the conventional press molding apparatus 10, It is possible to perform the O-ring molding operation only for the press molding material 20 having the shape or size corresponding to the first molding groove 13 and the second molding groove 13a. That is, the conventional press-molding apparatus 10 has a problem that it is difficult to change the shape or size of the press-molded workpiece 20 that can be formed, and therefore, it is ineffective to form a small amount of O-rings having various shapes or sizes.

Hereinafter, the core-interchangeable press-molding apparatus disclosed in this specification will be described with reference to FIG. 1 (b), FIG. 2, and FIG.

Referring to the drawings, a core interchangeable press forming apparatus 100 includes a first core 110, a second core 120, a first plate 130, and a second plate 140. In some other embodiments, the core interchangeable press forming apparatus 100 may optionally further include a third core 150 and a fourth core (not shown). In some other embodiments, the core interchangeable press forming apparatus 100 may optionally further include a fifth core 170 and a third plate 180. The first core 110 includes a first core 110, a second core 120, a third core 150, a fourth core, a fifth core 170, a first plate 130, a second plate 140, Various materials may be used as the material of the heat sink 150, for example, a metal material, a reinforced plastic having heat resistance and abrasion resistance, and the like.

The first core 110 includes a first groove 112 on one side thereof.

The second core 120 includes a second groove 122 having a shape corresponding to the first groove 112 on one side.

The first plate 130 has a first seating part 132 on which the first core 110 can be mounted. The first core 110 may be detachably mounted to the first seating portion 132 and may be replaced if necessary.

The second plate 140 is spaced apart from the first plate 130 and is formed with a second seating portion 142 on which the second core 120 can be mounted. The second core 120 is detachably mountable to the second seating portion 142 and can be replaced if necessary.

The first core 110 and the second core 120 may have first and second grooves 112 and 122 facing each other such that the first groove 112 and the second groove 122 face each other, And the second plate (140). The first press forming material 20a disposed in the first groove 112 or the second groove 122 is applied to the first plate 130 and the second plate 140 as shown in the example of FIG. Is press-formed by the first core (110) and the second core (120) which are in close contact with each other by the first external force (F1).

The first plate 130 and the second plate 140, which are connected to each other through a hinge connection, are shown as an example. In this case, the operator rotates the first plate 130 or the second plate 140 around the hinge, and presses the first plate 130 or the second plate 140 through the first core 110 and the second core 120, The material 20a can be press-formed. Alternatively, unlike the drawings, the first plate 130 and the second plate 140 may be spaced apart from each other through separate transporting means (not shown), and may be arranged to face each other. In this case, the first plate 130 or the second plate 140 is moved through the movement of the conveying means and the first and second cores 110 and 120, which are in close contact with each other in this process, The molding material 20a can be pressure-molded. For example, the first core 110 and the second core 120 may be in close contact with each other through various methods. The above description is based on the connection between the second plate 140 and the third plate 180 to be described later and the connection between the second core 120 and the fifth plate 180 due to the rotation or movement of the second plate 140 or the third plate 180. [ The present invention is also applicable to a structure for mutual close contact of the core 170.

The first core 110 and the second core 120 are removably mounted to the first and second seating portions 132 and 142 in various manners to form a first plate 130 and a second plate 142, 140, respectively. 2B shows a second core 120 to be mounted on the second seating portion 142 through the fixing groove 121a and the fixing frame 121b. In the drawing, concentric grooves and snap rings formed on the side surfaces of the second core 120 as the fixing grooves 121a and the fixing grooves 121b, respectively, are shown as an example. For example, the second core 120 may be detachably attached to the second seating portion 142 by various methods such as a screw coupling method, a fitting method, and the like . The above description is also applicable to the case where the first core 110 is detachably attached to the first seating portion 132 and the fifth core 170 to be described later is detachably attached to the third seating portion 182 It is possible to apply it to the case of mounting.

In addition, the first and second seating portions 132 and 142 having a circular shape and a through-hole shape are shown as an example. For example, the first seating portion 132 or the second seating portion 142 may have a shape such as a depressed shape or a protruding shape instead of a through-hole shape, The first core 110 or the second core 120 facing the first seating portion 132 or the second seating portion 142 may have a shape corresponding to the first core 110 or the second core 120, The core 120 may be detachably mounted to the first seating portion 132 or the second seating portion 142. [ The above description is also applicable to a case where a fifth core 170, which will be described later, is detachably mounted on the third seating portion 182. [

On the other hand, in FIG. 1 (b) and FIG. 3 (a), a first groove 112 concentrically formed on the one surface of the first core 110 is shown as an example. 2 (a) and 2 (b) illustrate by way of example a first press-molded material 20a disposed in a first groove 112 formed in a concentric shape. For example, the first groove 112 formed on the first surface of the first core 110 may have various shapes such as a polygonal shape and a meander shape instead of a concentric shape. have. In this case, the second groove 122 formed on the one surface of the second core 120 has a shape corresponding to the first groove 112. Accordingly, the core-interchangeable press-molding apparatus 100 disclosed in this specification can press-mold the first press-molded workpiece 20a into the shape of the first groove 112 and the second groove 122.

On the other hand, the first press-molded workpiece 20a disposed in the first groove 112 can be provided after both ends of the band-shaped press-molded workpiece are joined by the operator. Alternatively, the first press-molded workpiece 20a disposed in the first groove 112 may be provided in a band type. In the process of arranging the workpiece in the first groove 112, both ends may be formed, Both ends can be joined during the molding process. At least one selected from the first core 110, the second core 120, and combinations thereof may be heated to a predetermined temperature for stable bonding. In this case, heat may be directly applied to the first core 110 or the second core 120, and heat may be applied to the first plate 130 or the second plate 140, An indirect manner in which the heat of the two cores 120 is transferred may be applied. A variety of heating methods can be used, for example, a heating method using a hot wire can be used. The hot wire may contact at least any one selected from the first core 110, the second core 120, and combinations thereof, or may be at least one selected from the first plate 130, the second plate 140, They can be arranged in a manner in contact with one another. An external power source may be used as the power source to be supplied to the hot wire, or an independent power source such as a battery may be utilized.

In one embodiment, as illustrated by way of example in FIG. 3 (c), the one surface of the first core 110 and the one surface of the second core 120 are spaced apart from the first grooves 112, respectively And a sixth groove (not shown) formed to be spaced apart from the fifth groove 114 and the second groove 122 (see FIG. 1 (b)). The sixth groove may have a shape corresponding to the fifth groove 114. The third press-molded workpiece 20c disposed in the fifth groove 114 or the sixth groove may have a first plate 130 and a second plate 140 as shown in FIG. 2 (b) The first core 110 and the second core 120 which are in close contact with each other by the first external force F1 applied to the first press forming material 20a and the second core 120, The three-pressure-forming material 20c can be simultaneously press-formed. That is, the core-interchangeable press-molding apparatus 100 disclosed in this specification can simultaneously press-mold the first press-molded workpiece 20a and the third press-molded workpiece 20c by the first external force F1. In this case, the first groove 112 and the fifth groove 114 may have different sizes or different shapes, and through the first external force F1, o-rings having different shapes Can be produced at the same time.

Although the sixth groove formed in the second core 120 is not shown in the drawing, a person having ordinary knowledge in the technical field to which the present disclosure belongs (hereinafter referred to as a general technician) includes a first groove 112, The correspondence relationship between the fifth groove 114 and the sixth groove and the operation according to the corresponding relation of the second groove 122 and the operation thereunder are sufficiently inferred.

In an alternative embodiment, the first core 110 and the second core 120 may each have a first groove (not shown), as shown by way of example in FIGS. 2A and 2B and FIG. 3A, The first guide part 116 having a circular inner circumference formed on the one surface of the first core 110 so as to be spaced apart from the first guide part 112 and the second guide part 116 spaced apart from the second groove 122, And a first coupling part 126a having a circular outer circumference formed on the one surface of the second core 120 so as to have a shape corresponding to the first guide part 116. [ The first guide portion 116 and the first coupling portion 126a may be coupled to each other by the first external force F1. At this time, the first core 110 and the second core 120 can be closely contacted while being aligned through the coupling of the first guide portion 116 and the first coupling portion 126a by the first external force F1 have. That is, the core-interchangeable press-molding apparatus 100 disclosed in this specification includes the first guide portion 116 and the first fastening portion 126a, so that when the first external force F1 is applied, The second core 120 and the second core 120 can be brought into close contact with each other while being automatically aligned, thereby minimizing errors in the shape of the O-rings to be manufactured without using a separate process or equipment.

Meanwhile, in order to maximize the automatic alignment effect, it is preferable that the first groove 112 and the second groove 122 have a concentric circular shape. This is because when the first groove portion 112 and the second groove portion 122 have a concentric shape, when the first guide portion 116 and the first coupling portion 126a are engaged, the first groove 112 And the second groove 122 can be opposed to each other.

On the other hand, in the figure, the first guide portion 116 and the first coupling portion 126a each have a recessed and protruding structure as an example. Alternatively, the first guide portion 116 and the first coupling portion 126a may have a protruding shape and a depressed shape, respectively, as shown in FIG. As an example for the sake of understanding, the above-mentioned examples are not limited to the shapes of the first guide portion 116 and the first coupling portion 126a so that the first core 110 and the second core 120 can be automatically aligned while being in close contact with each other. Or structure.

At least one of the first core 110, the second core 120 and a combination thereof may be provided with a first guide portion 116 and a first coupling portion 126a by a first external force F1. A compressed air transfer hole (H) may be formed in order to minimize the repulsive force generated by the compression of the air. In one example, the compressed air transfer hole H formed in the first core 110 is shown as an example. For example, the compressed air transfer hole H may be formed in the second core 120 or may be formed in both the first core 110 and the second core 120. For example,

The third core 150 may include a third groove 152 on one side. In FIG. 3 (b), a closed loop shape is shown as an example for the third groove 152. In Fig. 3 (b), a closed-loop press-forming material corresponding to the third groove 152 is illustrated as an example as the second press-molded material 20b. For example, the third groove 152 and the second press-molded workpiece 20b may have various shapes such as a concentric circle shape, a polygonal shape, and a serpentine shape. The third core 150 can be detachably mounted to the first seating part 132 and can be replaced if necessary.

The fourth core (not shown) may include a fourth groove (not shown) having a shape corresponding to the third groove 152 on one side. The fourth core can be detachably mounted to the second seating portion 142 and can be replaced if necessary. Since the fourth core corresponds to the second core 120, a typical technician may not be able to distinguish the third core 150 and the fourth core 120 from the operation of the first core 110 and the second core 120, It is considered that the operation of the core will be sufficiently inferred.

The third core 150 may be mounted on the first seating part 132 and spaced apart from the first core 110. The fourth core may be mounted on the second seating part 142 with the second core 120, They can be mounted apart from each other. In other words, in the core-interchangeable press-molding apparatus 100 represented as an example in Fig. 1 (b), a part of the first core 110 and the part of the second core 120 are respectively connected to the third core 150 and the 4 cores.

The third grooves 152 or the second press-molded workpiece 20b disposed in the fourth grooves may be formed in the first plate 130 and the second plate 140, as shown by way of example in FIG. 2 (b) And the core-interchangeable press-molding apparatus 100 disclosed in the present specification by being press-formed by the fourth core, the first and second external forces F1, , The first press-molded workpiece 20a and the second press-molded workpiece 20b can be simultaneously press-formed. In this case, the first groove 112 and the third groove 152 may have different sizes or different shapes, and through the first external force F1, o-rings having different shapes Can be produced at the same time.

The core-interchangeable press-molding apparatus 100 disclosed in this specification may have a laminated structure as shown by way of example in Figs. 2 (c) and 2 (d).

The fifth core 170 may include a seventh groove 172 on one side thereof.

The third plate 180 is spaced apart from the second plate 140 and a third seating portion 182 on which the fifth core 170 can be mounted may be formed. The fifth core 170 can be detachably mounted to the third seat portion 182 and can be replaced if necessary.

In this case, the second seating portion 142 may be formed by forming a through-hole in the second plate 140. An eighth groove 128 having a shape corresponding to the seventh groove 172 may be formed on the other surface of the second core 120. The second core 120 may be mounted on the second plate 140 by detachably fixing the side of the second core 120 to the through hole of the second plate 140. The second core 120 may be detachably fixed to the through-hole of the second plate 140 in a snap ring manner, as illustrated in FIG. 2 (b), but may be formed by various methods such as screwing, Or may be detachably fixed.

The fifth core 170 may be mounted on the third plate 180 such that the seventh groove 172 faces the eighth groove 128. The fourth press-molded workpiece 20d disposed in the seventh groove 172 or the eighth groove 128 has a second plate 140 and a third plate (not shown) as shown in FIG. 2 (d) The second core 120 and the fifth core 170, which are in close contact with each other by the second external force F2 applied to the first core 110 and the second core 110, respectively.

2 (d), the first external force F1 and the second external force F2 are generated by the external force F applied to the first plate 130 and the third plate 180, Lt; / RTI > In this case, the first press-molded workpiece 20a includes a first core 110 and a second core 120 which are in close contact with each other by an external force F applied to the first plate 130 and the third plate 180, The fourth press-molded material 20d may be press-formed by the second core 120 and the second core 120 which are in close contact with each other by the external force F applied to the first plate 130 and the third plate 180, The first press-molded material 20a and the fourth press-molded material 20d can be simultaneously press-molded by the external force F by press-molding the first and second press-molded materials 20a and 20b. That is, the core-interchangeable press-molding apparatus 100 disclosed in this specification can simultaneously press-mold the first press-molded workpiece 20a and the fourth press-molded workpiece 20d by the external force F. [ In this case, the first grooves 112 and the seventh grooves 172 may have different sizes or different shapes, and simultaneously, o-rings having different shapes may be manufactured by one pressing through the external force F can do.

As another example, unlike the one shown in the drawing, the first surface of the first core 110 and the first surface of the second core 120 have the first grooves 112 and The fifth groove 114 and the second groove 122 and the sixth groove may be formed. In this case, the first grooves 112, the fifth grooves 114 and the seventh grooves 172 may have different sizes or different shapes, and the first grooves 112, the seventh grooves 114, O-rings having a shape can be produced at the same time. In the meantime, although a case where one stage is stacked is shown as an example, additional stacking is possible according to the needs of an operator, and a typical descriptor can sufficiently derive an additional stacking structure and operation from the above description. It will be omitted for convenience of explanation.

In an embodiment, the fifth core 170 and the second core 120 are spaced apart from the seventh groove 172, respectively, as shown in FIGS. 2C and 2D, The second guide part 176 formed on the one surface of the core 170 and the shape corresponding to the second guide part 176 at a position corresponding to the second guide part 176 spaced apart from the eighth groove 128 And a second coupling part 126b formed on the other surface of the second core 120 so as to have a predetermined length. The second guide portion 176 and the second fastening portion 126b can be coupled to each other by the second external force F2. At this time, the fifth core 170 and the second core 120 can be closely contacted while being aligned through the coupling of the second guide portion 176 and the second coupling portion 126b by the second external force F2 have. That is, the core-interchangeable press-molding apparatus 100 disclosed in this specification includes the second guide portion 176 and the second fastening portion 126b, so that when the second external force F2 is applied, The second core 120 and the second core 120 can be brought into close contact with each other while being automatically aligned, thereby minimizing errors in the shape of the O-rings to be manufactured without using a separate process or equipment.

Meanwhile, in order to maximize the automatic alignment effect, it is preferable that the seventh groove 172 and the eighth groove 128 have a concentric circular shape. This is because when the seventh groove 172 and the eighth groove 128 have a concentric shape, the seventh groove 172 and the seventh groove 172 can be formed without a separate rotation angle adjustment when the second guide portion 176 and the second coupling portion 126b are engaged, And the eighth groove 128 can be opposed to each other.

On the other hand, the second guide portion 176 and the second coupling portion 126b are shown in the form of depressed and protruding structures, respectively. Alternatively, the second guide portion 176 and the second coupling portion 126b may have a protruding shape and a depressed shape, respectively, as shown in FIG. As an example for the sake of understanding, the example described above is not limited to the shapes of the second guide portion 176 and the second coupling portion 126b as long as the second core 110 and the fifth core 170 can be automatically aligned while being in close contact with each other. Or structure.

At least one selected from the second core 110, the fifth core 170 and a combination thereof is provided with a second guide portion 176 and a second coupling portion 126b by a second external force F2, A compressed air transfer hole (H) may be formed in order to minimize the repulsive force generated by the compression of the air. In one example, the compressed air transfer hole H formed in the fifth core 170 is shown as an example. The above example is for the sake of understanding, and the compressed air transfer hole H may be formed in the second core 120, or may be formed in both the fifth core 170 and the second core 120. [

As described above, the core-interchangeable press-forming apparatus disclosed in this specification can replace the cores used for O-ring molding, so that only cores that are damaged during core damage can be replaced, thereby reducing maintenance costs.

From the foregoing it will be appreciated that various embodiments of the present disclosure have been described for purposes of illustration and that there are many possible variations without departing from the scope and spirit of this disclosure. And that the various embodiments disclosed are not to be construed as limiting the scope of the disclosed subject matter, but true ideas and scope will be set forth in the following claims.

10: Conventional press molding apparatus
11: Top plate mold
12: Lower mold
13: first molding groove
13a: second molding groove
20: Press forming material
20a: First pressurized material
20b: Second pressurized molding material
20c: Third pressurized molding material
20d: Fourth Pressurized Material
100: core interchangeable press forming device
110: first core
112: First home
114: 5th Home
116: first guide portion
120: second core
121a: Fixing groove
121b:
122: 2nd home
126a:
126b: the second fastening portion
128: 8th Home
130: first plate
132: first seat portion
140: second plate
142: second seat portion
150: third core
152: Third Home
170: fifth core
172: Seventh Home
176: second guide portion
180: third plate
182: third seat portion
F: external force
F1: First external force
F2: second external force
H: Compressed air moving hole

Claims

A first core having a circular outer periphery including a first groove of a circular shape on one surface thereof;
A second core having a circular outer periphery including a circular second groove having a shape corresponding to the first groove on one surface thereof;
A first plate having a circular first seating portion on which the first core can be mounted; And
And a second plate disposed at a distance from the first plate and having a circular second seating portion on which the second core can be mounted,
Wherein the first core and the second core are mounted on the first plate and the second plate such that the first groove and the second groove face each other,
Wherein the first press-molded material disposed in the first groove or the second groove is pressed by the first core and the second core, which are in close contact with each other by a first external force applied to the first plate and the second plate, Shaped,
The first core and the second core being replaceable,
Wherein the first core and the second core each have a first guide portion having a circular inner circumference formed on the one surface of the first core so as to be spaced apart from the first groove and a second guide portion spaced apart from the second groove, Further comprising a first fastening portion having a circular outer circumference formed on the one surface of the second core so as to have a shape corresponding to the first guide portion at a position corresponding to the first guide portion,
Wherein the first guide portion and the first fastening portion are coupled to each other by the first external force,
Wherein the first groove, the first core, the first seating portion, and the first guide portion form concentric circles,
The second groove, the second core, the second seating portion, and the first coupling portion form a concentric circle,
Wherein the first core and the second core are in close contact with each other while being aligned through the engagement of the first guide portion and the first fastening portion by the first external force.

The method according to claim 1,
A third core including a third groove on one surface thereof; And
And a fourth core having a shape corresponding to the third groove on one surface thereof,
Wherein the third core is mounted on the first seating portion so as to be spaced apart from the first core and the fourth core is mounted on the second seating portion so as to be spaced apart from the second core,
The second press-molded material disposed in the third groove or the fourth groove is pressed by the third core and the fourth core, which are in close contact with each other by the first external force applied to the first plate and the second plate, The first press-molded material and the second press-molded material can be simultaneously press-formed by the first external force,
Wherein the first groove and the third groove have different sizes or different shapes, and the third core and the fourth core are replaceable.

The method according to claim 1,
The one surface of the first core and the one surface of the second core each further include a fifth groove formed apart from the first groove and a sixth groove formed apart from the second groove,
The sixth groove has a shape corresponding to the fifth groove,
The third press-molded material disposed in the fifth groove or the sixth groove is pressed by the first core and the second core which are in close contact with each other by the first external force applied to the first plate and the second plate, And the first press-molded material and the third press-molded material can be simultaneously press-formed by the first external force by pressure-forming.

The method according to claim 1,
The first core, the second core, and a combination of the first core, the second core, and a combination of the first core and the second core. Further comprising a compressed air transfer hole for reducing the pressure of the core.

The method according to claim 1,
A fifth core including a seventh groove on one surface thereof; And
Further comprising a third plate spaced apart from the second plate and having a third seating portion on which the fifth core can be mounted,
The second seat portion is formed by forming a through hole in the second plate,
An eighth groove having a shape corresponding to the seventh groove is formed on the other surface of the second core,
The second core is mounted on the second plate by detaching the side face of the second core in the through hole of the second plate,
The fifth core is mounted on the third plate such that the seventh groove faces the eighth groove,
The fourth press-molded material disposed in the seventh groove or the eighth groove is pressed by the second core and the fifth core, which are in close contact with each other by a second external force applied to the second plate and the third plate, Shaped,
Wherein the fifth core is interchangeable.

6. The method of claim 5,
Wherein the fifth core and the second core each have a second guide portion formed on the one surface of the fifth core so as to be spaced apart from the seventh groove and a second guide portion spaced apart from the eighth trench and corresponding to the second guide portion And a second coupling part formed on the other surface of the second core so as to have a shape corresponding to the second guide part,
The second guide portion and the second fastening portion are coupled to each other by the second external force,
Wherein the fifth core and the second core are in close contact with each other while being aligned through the engagement of the second guide portion and the second fastening portion by the second external force.

The method according to claim 5 or 6,
Wherein the first external force and the second external force are provided by an external force applied to the first plate and the third plate,
Wherein the first press-molded material is press-formed by the first core and the second core which are in close contact with each other by the external force applied to the first plate and the third plate, and the fourth press- 1 plate and the third plate, the second core and the fifth core being in close contact with each other by the external force exerted on the third plate and the third plate, so that the first press-molded material and the fourth press- A core interchangeable press forming apparatus capable of press forming.