KR102305983B1 - Multiple stacking plate for sinteringelectric parts - Google Patents

Abstract

The present invention relates to a multi-stacking plate for firing, and more particularly, to a multi-stacking plate for firing, which can improve productivity by enabling stacking plates on which electronic components are loaded to be multiply stacked. The stacking plate that can be multiply stacked in a firing furnace to improve productivity comprises: a mesh net on which electronic components are loaded; a first frame formed to surround the edge end of the mesh net; and a second frame which is inserted between the first frame and the mesh net to form a space between the stacking plate and the stacking plate to be stacked.

Description

Multiple stacking plate for sinteringelectric parts

The present invention relates to a multi-loading board for firing, and more particularly, to a multi-loading board for firing capable of improving productivity by allowing multiple stacking plates on which electronic components are to be stacked.

In general, a ceramic electronic component is formed into a predetermined shape from a ceramic raw material, and then is completed through a binder removal process, a firing process, and a cooling process in sequence. The ceramic compact is _{prepared by adding a binder, which is an organic component, to raw powder such as BaTiO 3} , MnO ₂ , Glass Frit, and the like to prepare a slurry, and form a ceramic sheet using the slurry as a dielectric sheet.

Such a ceramic molded body is formed by pattern-printing internal electrodes, which are metal components of Ag, Ni, Cu, Pd, and Pd/Ag materials, on the surface of the ceramic sheet and stacking the ceramic sheets printed with internal electrodes in multiple layers to manufacture a laminated sheet, 500 It is manufactured by cutting the compressed laminated sheet to a predetermined length after pressing at a pressure of ~1300 kgf/cm 2 .

On the other hand, the capacitor has a structure in which two electrode plates are opposed to each other and can perform various roles such as DC signal blocking, bypassing, and frequency resonance. It is an electronic component constructed by stacking

In general, multilayer ceramic capacitors are manufactured by printing electrode paste dispersed in a vehicle on a ceramic green sheet, stacking them in multiple layers, and then heating and pressing. In this case, the binder may be removed by firing at a temperature of about 500° C. or less in an oxidizing atmosphere or an inert atmosphere, and the multilayer ceramic capacitor may be completed by continuously firing in a reducing atmosphere so that the internal electrodes are not oxidized.

A firing process of a multilayer ceramic capacitor generally includes a bake-out and a sintering process. The calcination process is a process to remove unnecessary polymer binders used in the molding of chips by heating them at a high temperature between 300 and 700 ° C. It is the process of realizing an established organization.

In addition, in the firing process, the type of firing furnace can be varied according to the use, size, production volume, treatment method, etc. of the fired material, and ceramic capacitors are a type of continuous furnace, such as a footsher furnace and a roller hearth kiln furnace, according to the need for miniaturization and mass production. can be mainly fired in

A pusher is a heating furnace that performs a firing process by transferring a base plate for loading an object to be fired on a road rail into the firing furnace through a hydraulic or mechanical pusher. The footsher furnace is widely used as a kiln for a wide range of electronic ceramics because it is excellent in mass productivity, uniformity of temperature distribution, and controllability of a high level of atmosphere.

In addition, the roller hearth kiln (roller hearth kiln) is a heating furnace that performs the firing process by transferring the setter (setter) loaded with the fired material through the rotation of the roller installed in the furnace into the firing furnace. The roller hearth kiln furnace is easy to mass-produce because it can increase the firing efficiency by increasing the rotational speed of the roller in a way that the setter passes through the firing furnace at a constant temperature.

However, since the continuous furnace transports the setter loaded with the fired molding to be fired, vibration according to the transport is inevitably caused, and the position of the fired molding may be changed during firing due to the continuous vibration.

In addition, since electronic components such as multilayer ceramic capacitors (MLCCs) are in the form of chips that are finely cut, the to-be-fired moldings in the form of chips must be arranged so as not to be stacked on each other and supplied to the firing furnace due to their characteristics.

To solve this problem, a method of supplying electronic components in the form of chips to the kiln in a single-layer state so that they are not stacked using a container made of a refractory material as a pedestal has been proposed, but this method has a disadvantage in that it is difficult to increase productivity and yield. , it is difficult to unbind the fired molding after firing, and the shrinkage rate of the fired molding varies depending on the difference in thermal conductivity between the part that touches the pedestal and the part that does not come in contact with the pedestal. There are problems that arise.

In addition, a mesh network manufactured in the form of a net by weaving metal wires to have excellent heat transfer effect is used, but the mesh network is weak in strength and may cause continuous shaking due to its light weight. There is a problem in that the mesh network is deflected downward, and thus the shape of the mesh network is distorted or bent, and the lifespan of the mesh network is shortened.

Republic of Korea Patent Publication No. 10-1638844 (2016.07.06.)

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a multi-loading plate for firing that can improve productivity and yield by stacking and firing electronic components in multiple stacks in a firing furnace. There is a purpose.

In addition, another object of the present invention is to form the loading plate with a mesh network to have excellent ventilation, and to form a space between the loading plate and the loading plate, so that atmospheric gas can penetrate from the top and bottom as well as from the side, so that the heat is evenly distributed It is to provide a multi-loading plate for firing that can be distributed.

In addition, another object of the present invention is to provide a multi-loading plate for firing that compensates for the phenomenon in which the mesh network sags downward according to the weak strength and the weight of electronic components, which are disadvantages of the loading plate made of the mesh network.

Objects of the present invention are not limited to the objects mentioned above, and other objects not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

In order to achieve the above object, the present invention, according to a preferred embodiment of the present invention, in a loading plate capable of improving productivity by being multi-stacked in a kiln, a mesh network on which electronic components are loaded ; a first frame formed to surround the edge end of the mesh network; and a second frame that is inserted between the first frame and the mesh network to form a spaced space between the stacking plate and the stacking plate stacked.

The first frame is characterized in that it is formed to surround the outer circumferential surface of the mesh network in a 'C' shape.

In addition, the second frame is characterized in that the upwardly bent protrusion is formed.

In this case, a plurality of the protrusions are formed in a line in a triangular shape, and are formed at a predetermined height based on the mesh plane of the upper surface of the protrusions.

In addition, the protrusion is characterized in that a through hole is formed in the center so that heat generated from the side of the kiln is transferred to the electronic component.

In addition, a jig is fitted to the through-hole to stably transport the loading plate.

On the other hand, both ends of the lower surface of the first frame is characterized in that in response to the position of the protrusion, a clasp is formed with a predetermined length to fix the stacked loading plate.

As described above, the multi-loading plate for firing according to the present invention can stack the stacking plates on which the ceramic electronic components are loaded in multiple, so that the fired molding can be fired in a large amount to improve productivity and yield. do.

In addition, the multi-loading plate for firing according to the present invention is formed of a mesh network and has excellent ventilation, and by forming a space between the loading plate and the loading plate, atmospheric gas can penetrate from the top and bottom as well as from the side, so that the heat is evenly distributed There is an advantage in that it is possible to produce a ceramic product having uniform characteristics by being distributed.

In addition, the multi-loading plate for firing according to the present invention has the advantage of being able to use the loading plate for a long period of time by supplementing the phenomenon of sagging downward and the weak strength of the mesh network to prevent deformation such as twisting or bending of the mesh network.

1 is a perspective view of a multi-loading plate for firing according to a preferred embodiment of the present invention.
2 is a perspective view of a multi-stacking board for firing multi-layered according to a preferred embodiment of the present invention.
3 is a side view and a partially enlarged cross-sectional view of a multi-stacking board for firing multi-layered according to a preferred embodiment of the present invention.
4 is a side view and a partially enlarged view of the multi-stacking board for firing multi-stacked according to a preferred embodiment of the present invention.
5 is an exploded perspective view of a multi-stacking board for firing multi-layered according to a preferred embodiment of the present invention.
6 is a side view of a multi-stacking board for firing multi-layered according to another embodiment of the present invention.

Advantages and features of the present invention, and methods of achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

Detailed contents for carrying out the present invention will be described in detail with reference to the accompanying drawings below. Regardless of the drawings, like reference numbers refer to like elements, and "and/or" includes each and every combination of one or more of the recited items.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

The terminology used herein is for the purpose of describing the embodiments, and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a multi-loading plate for firing according to a preferred embodiment of the present invention. As shown in FIG. 1 , the multi-loading plate 10 for firing is stacked in multiples in the firing furnace to improve productivity, and is largely a mesh network 13 , a first frame 11 , and a second frame 12 . ) is included.

The loading plate 10 according to the present invention is a polygonal shape, preferably a square plate shape, but is not limited thereto and can be implemented in various ways.

Specifically, the loading plate 10 is formed of a nickel material, and has a square plate shape with a thickness of 0.2 mm. The loading plate may be coated with one or more materials in order to eliminate the reactivity of the electronic component and the loading plate during firing, and may not be coated.

Next, the mesh network 13 refers to a mesh-shaped net, and supports electronic components to be loaded into the kiln by being loaded on the mesh network 13 .

The mesh network 13 is formed in the form of a mesh having a porous structure, and when electronic components are loaded on the mesh network, the electronic components are uniformly heat-conducted and can be fired to have uniform characteristics by suppressing a difference in shrinkage.

Here, the material of the mesh network 13 is a metal material, and since it is continuously exposed to heat, it is preferably made of a material excellent in heat resistance, corrosion resistance, and thermal shock resistance.

In addition, the mesh network 13 is formed in the form of a mesh having a porous structure, so that electronic components can be easily de-bind after firing.

In this case, the electronic component may be a multilayer ceramic capacitor, a ferrite, or a piezoelectric body, and among electronic components, a multi-layer ceramic condenser (MLCC) is a multi-layer ceramic capacitor such as a mobile communication terminal, a notebook computer, and a personal digital assistant (PDA). It is a chip-type capacitor that is mounted on a printed circuit board of an electronic product and plays an important role in charging or discharging electricity, and may have various sizes and stacked shapes depending on the purpose and capacity used.

Referring to FIG. 1 , the first frame 11 is formed to surround the edge end of the mesh network 13 .

The first frame 11 prevents deformation of the mesh network 13 that is continuously exposed to heat, and is formed individually so that the mesh network 13 can have breathability to expose and wrap a part, preferably It is appropriate to wrap so that the vertex is exposed.

In addition, the first frame 11 is preferably formed at all corners in order to surround the edge end of the mesh network 13, but is not limited thereto, and forming the first frame 11 only at symmetrical corners possible.

According to a preferred embodiment, the first frame 11 is formed to surround the outer circumferential surface of the mesh network 13 in a 'C' shape.

Specifically, the loading plate 10 according to the present invention is wrapped in a 'C' shape by the first frame 11 in a folded state by bending the four corner ends of the mesh network 13 . is formed

According to another embodiment, the first frame 11 has a 'J' shape that elongates the lower side of the outer circumferential surface of the mesh network 13 and a 'U' wraps the outer circumferential surface with a ventilation space at the end of the mesh network 13 . It can be wrapped in a ruler shape, and it is not limited thereto, and it can be implemented with various changes.

Next, FIG. 2 is a perspective view of a multi-stacking board for firing multi-stacked according to a preferred embodiment of the present invention, and FIG. 3 is a side view of a multi-stacking board for firing multi-stacked according to a preferred embodiment of the present invention. and a partially enlarged side cross-sectional view.

As shown in FIG. 2 , the multi-loading plate 10 for firing according to the present invention is multi-layered and put into the firing furnace, and it is preferable to stack it in 4-5 layers due to the trade-off between ensuring temperature precision and increasing productivity. and, more preferably, it is appropriate to laminate in five stages.

According to a preferred embodiment, the second frame 12 is inserted between the first frame 11 and the mesh 13 to form a spaced space between the stacking plate and the stacking plate.

The mesh network 13 is preferably wrapped by the first frame 11 with the edge of the edge folded to a predetermined length, and the mesh network 13 is the first frame 11 with the edge folded. ), it can be supported better without sagging downward by the weight of the electronic components loaded on the loading plate 10, and, of course, the operator can work safely.

In this case, the second frame 12 is preferably inserted between the mesh network 13 and the first frame 11 in a state in which the edge end of the mesh network 13 is folded.

Specifically, referring to FIG. 3 , the second frame 12 has a 'L' shape, the 'C' shape, and the first frame 11 and the mesh wrapped around the first frame 11 . It is inserted between the meshes 13 to be in close contact with the first frame 11 to support the mesh network 13 .

In addition, as another example, the mesh network 13 is inserted into the 'C' shape in a bending state with elasticity rather than a fully folded state, and is inserted into the first frame 11, the first frame ( 11), when the second frame 12 in the shape of 'L' is inserted between the mesh networks 13 wrapped around the mesh network 13, the mesh network 13 is elastically attached to the first frame 11. can be supported by

The present invention compensates for the phenomenon that the mesh network sags downward and weak strength as the edge end of the mesh network 13 is wrapped around the first frame 11 in a folded state, so that the mesh network is twisted or bent, etc. By preventing deformation of the loading plate, it can be used for a long time.

At this time, the loading plate 10 according to the present invention is the first frame 11 surrounding the mesh network 13 and the second frame inserted between the mesh network 13 and the first frame 11 . It is also possible to connect more firmly by spot welding to both ends of (12).

According to another embodiment, the second frame 12 may be formed integrally with the first frame 11 to be formed as a frame bent upward from one end of a 'C' shape.

That is, the loading plate 10 according to the present invention combines the first frame 11 and the second frame 12 to the mesh network 13 having a porous structure, thereby providing weak strength and shape deformation of the conventional mesh network. It is possible to compensate for the disadvantages such as, and to improve productivity and yield as it can be stacked multiple times.

According to a preferred embodiment, the second frame 12 is formed with a protrusion 14 bent upward.

At this time, it is preferable that a plurality of the protrusions 14 are formed in a line in a triangular shape, and the upper surface of the protrusions 14 is formed at a predetermined height with respect to the plane of the mesh network 13 .

The protrusion 14 is preferably formed on one frame and the other frame corresponding thereto, but is not limited thereto and can be implemented in various ways.

According to the present invention, as the loading plate 10 is formed of a mesh network 13 and the protrusion 14 is formed, a spaced space is formed between the loading plate and the loading plate, so that there is ventilation in the horizontal and vertical directions as well as Heat is uniformly distributed to the electronic components loaded on the loading plate 10 .

Next, Figure 4 is a side view and a partial enlarged view of the multi-stacking board for firing multi-stacked according to a preferred embodiment of the present invention, Figure 5 is a multi-layer multi-layer for firing according to a preferred embodiment of the present invention It is an exploded perspective view of the loading plate.

According to a preferred embodiment, a through hole 15 is formed in the center of the protrusion 14 so that heat generated from the side of the kiln is transferred to the electronic component.

The through hole 15 is formed so that heat or gas generated from the side of the kiln, that is, in the horizontal direction, can pass therethrough. Referring to FIG. 4 , the through-hole 15 has a triangular shape, but is not limited thereto, and may be variously changed into a circular or polygonal shape.

The through hole 15 is preferably formed in the center of the protrusion 14 in a shape corresponding to the protrusion 14 .

In addition, according to a preferred embodiment, the through hole 15 is fitted with a jig (not shown) to stably transport the loading plate.

As shown in FIG. 4 , the loading plate 10 is multi-layered and put into the kiln, and after plastic processing, the loading plate 10 is difficult to transport directly due to high temperature. In order to solve this, by forming the through hole 15 in the protrusion 14, a jig can be fitted and the loading plate 10 can be stably transported, thereby facilitating safe transport by the operator.

In addition, the present invention can be laminated in 4 to 5 steps to improve productivity and yield, and the locking step 16 is provided on the lower surface of the first frame 11 to stably support the stacked structure of the stacking plate. is formed

Referring to FIG. 5 , the locking jaw 16 extends outward and protrudes, and the locking jaw 16 corresponds to the positions of the protrusions 14 formed at both ends on the lower surface of the first frame 11 . It is preferable to be formed to a predetermined length.

According to a preferred embodiment, the locking jaws 16 are formed at both ends of the lower surface of the first frame 11 to have a predetermined length corresponding to the position of the protrusion 14 to fix the stacked stacking plates.

As shown in FIG. 5 , the stacked loading plate can be stably supported by the protrusion 14 of the loading plate located under the loading plate 10 being caught on the locking protrusion 16 .

6 is a side view of a multi-loading board for firing multi-layered according to another embodiment of the present invention.

The multi-loading plate for firing according to another embodiment largely includes a mesh network 23 , a first frame 21 , a second frame 22 , and a coupling groove 26 .

The mesh 23 is made of a metal material and is continuously exposed to heat, so it is made of a material excellent in heat resistance, corrosion resistance, and thermal shock resistance. At this time, the end of the mesh network 23 is bent to compensate for the downward sag of the mesh network, and to improve the safety of the operator.

The first frame 21 is formed to surround the mesh network 23 in a 'C' shape, and preferably, while wrapping the edge end of the mesh network 23 in a bent state, the strength of the mesh network is supplemented. do.

In addition, a coupling groove 26 corresponding to the position of the second frame 22 is formed on the lower surface of the first frame 11 so that the protruding portion of the second frame 22 can be coupled.

The second frame 22 is formed of a single wire wire made of a material having excellent heat resistance, corrosion resistance, and thermal shock resistance, and the second frame 22 is formed on the first frame, and the first frame (21) It is preferable to spot welding on both ends of the upper surface.

In addition, as the second frame 22 is formed of a single wire, it is easy to transport with a light weight and can be manufactured simply. ) can also be formed.

As shown in FIG. 6 , the second frame 22 preferably has a shape in which a plurality of triangular shapes are continuously formed at the same height, but is not limited thereto and may be changed to a polygonal shape such as a rectangular shape.

'자 형상으로 하나의 직사각형을 형상으로 형성되는 것이 바람직하며, '

'자 형상의 직사각형은 측면의 통기성을 향상시켜주며 상부 및 하부에 적재되는 적재판과 안정적으로 결합시킬 수 있다.As another example, when the second frame 22 has a rectangular shape, '

'It is preferable to form a single rectangle in the shape of a ruler,'

The 'shaped rectangle improves the side ventilation and can be stably combined with the loading plate loaded on the upper and lower parts.

In addition, the loading plate can be transported by hanging or inserting a jig at both ends of the curved shape of the second frame 22 .

Referring to FIG. 6 , in the coupling groove 26 , the coupling groove 26 is formed to correspond to the curved shape of the second frame 22 so that the coupling groove 26 has a curved shape of the second frame. As it is inserted and combined, it is possible to easily transport the multi-loaded loading plate.

In addition, the coupling groove 26 is preferably formed to correspond to the curved shape of the second frame 22, but is not limited thereto, such as forming coupling grooves only at both ends, and various modifications can be made.

In addition, the loading plate according to another embodiment is easy to make the second frame 22, it is possible to easily and stably stack the loading plate to easily improve the yield and productivity.

Although embodiments of the present invention have been described with reference to the above and the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can practice the present invention in other specific forms without changing its technical spirit or essential features. You will understand that there is Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

10: loading plate
11, 21: first frame
12, 22: second frame
13, 23: mesh
14: protrusion
15: through hole
16: stiff jaw
26: coupling groove

Claims (7)

In a loading plate that can be laminated multiple times in a kiln to improve productivity,
a mesh network on which electronic components are loaded;
a first frame formed to surround the edge end of the mesh network; and
A multi-loading plate for firing including; a second frame that is inserted between the first frame and the mesh network to form a spaced space between the stacking plate and the stacking plate. The method of claim 1,
The first frame is a multi-loading plate for firing, characterized in that formed so as to surround the outer peripheral surface of the mesh in a 'C' shape. The method of claim 1,
The second frame is a multi-loading plate for firing, characterized in that the upwardly bent protrusion is formed. 4. The method of claim 3,
A plurality of the protrusions are formed in a line in a triangular shape, and the multi-loading board for firing, characterized in that formed at a predetermined height based on the mesh plane of the upper surface of the protrusions. 4. The method of claim 3,
The multi-loading plate for firing, characterized in that the protrusion has a through hole formed in the center so that heat generated from the side of the firing furnace is transferred to the electronic component. 6. The method of claim 5,
A multi-loading plate for firing, characterized in that the through-hole is fitted with a jig to stably transport the loading plate. 4. The method of claim 3,
Multiple stacking plates for firing, characterized in that at both ends of the lower surface of the first frame, locking protrusions are formed with a predetermined length corresponding to the position of the protrusion to fix the stacked stacking plates.

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