KR20140112005A - Method for deburring core members of electronic components, and device therefor - Google Patents

Abstract

The present invention provides a method and apparatus for performing burr removal of a member of a small electronic component in a large amount reliably at a time, and for removing burrs without cracking or chipping of the member. A burr removal method for removing a burr formed in a clearance between a plurality of flanges of a core member made of a bulk ceramic having a plurality of flanges. First, a plurality of core members are inserted into a bottomed tubular tumbler having an opening at one end and a closed end at the other end. Then, the tumbler is rotated to stir the plurality of core members. (Jet flow) of a gas mixed with a small jet material is jetted from the gap of the flange toward the burr of the convex portion formed at least in the clearance of the flanges of the core member. Thereafter, the jetting material is discharged from the through hole formed in the wall surface of the tumbler to the outside of the tumbler.

Description

TECHNICAL FIELD [0001] The present invention relates to a method and apparatus for removing burrs in a core member of an electronic component,

TECHNICAL FIELD The present invention relates to a method and a device for surface treating a large number of small electronic components such as a capacitor, an inductor, a semiconductor IC, and a sensor device at a time. More particularly, the present invention relates to a method for processing burrs (deflashing) of a core member of an electronic component and a device therefor. Among the electronic components, chip resistors and chip electronic components such as chip capacitors and chip coils are also included.

BACKGROUND ART Conventionally, in the manufacture of a component of a portable DC-DC converter (voltage conversion device) used in a liquid crystal display or the like, after molding, molding is performed, burrs are removed, the coil is wound, And external electrodes are attached thereto by resin molding. The burr removal is a process for preventing the coils from being cut by the remaining burrs in the subsequent step of winding the coils.

For such burr removal, it is known to perform barrel polishing on the surface of the core member of the electronic component. However, in the barrel polishing, the to-be-treated parts and the medium are charged into the rotating barrel, and in some cases, water, abrasive grains and an auxiliary agent are further introduced into the rotating barrel, The surface treatment of the part to be treated is carried out.

However, in the barrel polishing apparatus, it is necessary to manually separate the parts to be treated and the medium after completion of polishing, and there is a problem in that a large amount of processing can not be performed at one time. Further, in the case of using water, there is a problem that water treatment equipment after polishing is required. Further, there is a problem that the clearance of the member is small and the burr is not removed.

Thus, a method of employing a blast apparatus is considered. The method invention disclosed in Japanese Patent Application Laid-Open No. H11-347941 (Patent Document 1) is a method of manufacturing a permanent magnet having a surface-treated coating on the surface of a magnet by a tumbler-type drum portion of a tumbling blast machine or an apron- And a steel shot is sprayed onto the permanent magnet while rotating the drum portion, thereby peeling off the surface treated film on the surface of the magnet.

The invention of Patent Document 1 is characterized in that the number of revolutions of the drum portion is 2 to 15 rpm, the average particle size of the steel shot is 0.18 to 0.50 mm, the average hardness of the steel shot is 40 to 50 HRC, The projection angle of the steel shot to the Fe-B system permanent magnet is 40 to 90 degrees, and the projection speed is 50 to 80 m / sec.

However, when the drum-type burr removal method disclosed in Patent Document 1 is applied to members of a large number of small electronic components, the members collide with each other frequently or with a strong impact force. Therefore, a large number of cracks or defects occur in the part to be treated.

In addition, the steel shot disclosed in Patent Document 1 has an average particle size of 0.18 mm to 0.50 mm, and since the shot is larger than the clearance of the flange, the shot can not enter the gap of the flange. Therefore, there is a problem that burr removal can not be performed.

Further, in the blast treatment apparatus of Japanese Patent Application Laid-Open No. 2001-341075 (Patent Document 2), since a cylindrical barrel formed of a mesh is used, only a member larger than the mesh can be treated. For example, in the first embodiment of the patent document 2, the mesh size of the mesh is 5.1 mm on one side, and the line diameter is 1.0 mm. Therefore, a member smaller than 5 mm square is to be processed I can not. Although it is conceivable to reduce the mesh size of the mesh in order to deal with the presence of small electronic components, there is a problem in that the probability that the injection material bumps against the mesh becomes high and efficient processing can not be performed.

Further, in the blast treatment apparatus of Patent Document 2, the individual projection nozzles have an appropriate oscillating angle in the longitudinal direction of the cylindrical barrel. Therefore, in order to uniformly and efficiently project the injection material to all the objects to be processed in the cylindrical barrel longer than the diameter of the projection range in the longitudinal direction, it is premised that a plurality of projection nozzles are provided for one cylindrical barrel. Otherwise, projection outside the projection range becomes insufficient.

In Patent Document 2, the purpose is to remove the oxide layer formed on the surface of the permanent magnet, clean the surface, and perform shot peening for the surface treatment film, and it is not assumed that burrs are removed from members of small electronic parts.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a method and apparatus for performing burr removal of a member of a small electronic component in a large amount and at once and reliably without cracking or defects of the member.

Japanese Patent Application Laid-Open No. H11-347941 Japanese Patent Application Laid-Open No. 2001-341075

In order to achieve the object of the present invention,

A burr removing treatment method for removing a burr formed in a gap of a plurality of flanges of a core member made of bulk ceramics having a plurality of flanges and a core portion,

A step of putting a plurality of core members into a bottomed tubular tumbler having an opening at one end and closed at the other end,

A step of rotating the tumbler to stir (stir) the plurality of core members,

(Jet flow) of a gas mixed with a jetting material smaller than the clearance of the flange is blown toward a burr formed in a gap of a plurality of flanges of a core member made of the bulk ceramic through the opening portion and,

And discharging the injected jetting material from the through hole formed in the wall surface of the tumbler to the outside of the tumbler.

According to the present invention, it is possible to reliably remove a large number of burrs of a member of a small electronic component at one time, and to remove burrs so that cracks and defects of the members do not occur. The injection material injected toward the inside of the tumbler is discharged to the outside of the tumbler from the through hole formed in the wall surface after burr removal.

In the second aspect of the present invention, the specific gravity of the spray material is 1.0 to 3.0, the average diameter of the spray material is 0.02 to 0.08 mm, and the spray pressure of the above-mentioned spray is 0.03 MPa or more and 0.15 MPa or less.

According to the present invention, since the specific gravity and the average diameter of the injection material are small and the injection pressure is low, cracks and defects do not occur in the members of the electronic parts.

According to a third aspect of the present invention, the distance from the opening of the nozzle tip for projecting the gas mixture containing the jetting material to the core member made of bulk ceramic is 200 mm or more and 500 mm or less.

According to the present invention, it is possible to efficiently remove the burrs without excessively increasing the diffusion of the jet flow. In addition, cracks and defects do not occur in the members of the electronic parts.

In the fourth aspect of the present invention, it is preferable that the difference in rotational speed between the jetting center and the jetting outer circumferential portion in the jetting range of jetting of the gas mixed with the jetting material at the position of the core member made of the bulk ceramic is not less than 32 mm / s and not more than 64 mm / s And tumbling the core member.

According to the present invention, cracks and defects do not occur as the core members collide with each other. On the other hand, efficient burr removal is possible.

In the fifth aspect of the present invention, the injection material has a hardness of HV 1000 to 2500.

According to the present invention, it is possible to efficiently remove the burrs of the core member of the bulk shape ceramics.

In the sixth aspect of the invention, the core member made of the bulk ceramic is an inductor member or a coil member of an electronic component manufactured by firing after molding molding with a gap of 0.3 mm to 0.8 mm, And spraying an injection material made of alumina or silicon carbide and having an average diameter of 0.02 to 0.08 mm.

According to the present invention, it is possible to inject an injection material having an appropriate size with respect to the clearance between the flange of the coil member and the inductor member of the electronic component, so that efficient burr removal is possible.

In the seventh aspect of the present invention, it is preferable that the distance between the opening of the nozzle tip for discharging the gas mixture containing the jetting material and the core member made of bulk ceramics is 0.2 mm to 0.8 Kg / Or less.

According to the present invention, it is possible to more effectively remove the burrs of the core member made of bulk ceramics.

An eighth invention of the present invention is a burr removing apparatus for use in a burr removing method of a core member,

At least one rotating mechanism for rotating the plurality of tumblers,

And a plurality of nozzle assemblies for injecting the jet of the jet of mixed gas,

Wherein a plurality of through holes are formed in a wall surface forming the outer periphery of the tumbler and an agitation promoting member is provided on an inner wall of the tumbler.

According to the present invention, it is possible to reliably remove a large number of burrs of a member of a small electronic component at one time, and to remove burrs so that cracks and defects of the members do not occur.

In the ninth invention of the present invention, the opening of the tumbler and the nozzle assembly are opposed to each other, and the injection of the jetting material is performed from the opening of the tumbler to the bottom of the tubular tumbler, Is performed toward the burr of the convex portion formed in the clearance of the plurality of flanges.

According to the present invention, it is possible to more reliably remove burrs of members of small electronic components at a time in a large amount, and to remove burrs so that cracks and defects of members do not occur.

According to a tenth aspect of the present invention, the tumbler is inclined at an angle of 20 ° to 40 °.

According to the present invention, by rotating the tumbler at an angle of 20 DEG to 40 DEG, the parts to be treated in the tumbler can be efficiently agitated. That is, according to the present invention, it is possible to more reliably remove the burrs of the members of the small electronic component at one time, and to remove the burrs without cracks or defects of the members.

According to an eleventh aspect of the present invention, in the tenth aspect of the invention, the tumbler is a polygonal box-shaped article having an opening at the top or a cylinder-shaped article having a bottom.

According to the present invention, a plurality of core members are likely to be agitated in accordance with the rotation of the tumbler, and burr removal can be efficiently performed.

In the twelfth aspect of the present invention, the nozzle assembly is provided with a nozzle assembly mounting member for allowing the nozzle assembly to move during ejection of the jetting material from the opening of the nozzle tip for discharging the jet of the jetting material mixed therein, To a core member made of a material having a predetermined thickness.

According to the present invention, it is possible to control the distance from the opening of the nozzle tip to the core member made of bulk ceramics, from which the jet of the gas mixture containing the jetting material is discharged, so that the burr can be removed with the optimum jetting intensity. If the injection intensity is excessively strong, the injection distance can be increased.

In the thirteenth invention of the present invention, the nozzle assembly is moved after the injection is finished by the nozzle assembly mounting member to replace the tumbler.

According to the present invention, in replacing the tumbler, the tumbler can be easily replaced without moving the nozzle assembly by moving the position of the nozzle assembly by the nozzle assembly mounting member.

In addition, since the tumbler can be exchanged, the setup change time can be increased. That is, the tumbler that is not being processed can prepare for the next batch process.

In the fourteenth invention of the present invention, the nozzle assembly includes: an air nozzle for introducing compressed air into the nozzle holder to generate a negative pressure inside the nozzle holder; A nozzle holder having a path through which the injected material sucked by the generated negative pressure passes and a mixing chamber in which the compressed air is mixed with the jetting material and a nozzle holder for jetting the compressed air mixed in the mixing chamber and the jetting material toward the core member At least one of a connection portion between the nozzle holder and the air nozzle and a connection portion between the nozzle holder and the injection nozzle has a sealing member.

According to the present invention, unlike the system (so-called pressurized type) in which the injection material is fed into the pressurizing tank and the injection material is sent to the nozzle assembly by pressing the inside of the pressurizing tank, a large auxiliary equipment is unnecessary, The overall size can be reduced. In addition, by providing a sealing member at least at one of the connecting portion between the nozzle holder and the air nozzle and the connecting portion between the nozzle holder and the jetting nozzle, the jetting amount of the jetting material can be stabilized.

The present application is based on Japanese Patent Application No. 2012-004284 filed on January 12, 2012, the contents of which are incorporated herein by reference.

Further, the present invention can be more fully understood by the following detailed description. It should be understood, however, that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only. From the above description, various changes and modifications will be apparent to those skilled in the art.

Applicants do not intend to incorporate any of the described embodiments in the public domain, nor shall they be included in the scope of the invention, under the doctrine of equivalents, which may or may not be literally included in the disclosed modifications, alternatives, or claims.

In describing the present specification or claims, it is to be understood that the use of nouns and the like is interpreted to include both singular and plural, unless specifically indicated otherwise, or unless the context clearly dictates otherwise. Should be. The use of any example or exemplary term (e.g., " etc. ") provided herein is merely intended to facilitate the description of the present invention, and is not intended to limit the scope of the present invention It does not apply.

1 is a front view and a side view schematically showing a configuration of a burr removing device of the present invention.
Fig. 2 is an explanatory view showing an internal configuration of a blast machining chamber in the burr removing device of Fig. 1. Fig.
3 is an explanatory diagram showing a method of installing a tumbler in a rotating mechanism in the burr removing device of Fig. 1;
Fig. 4 is an explanatory view showing a method of installing a drive transmitting member in the burr removing device of Fig. 1;
5 is an explanatory view showing an example of a tumbler having a circular longitudinal section that can be used in the burr removing apparatus of the present invention. FIG. 5A is a side view of the tumbler, FIG. 5B is a sectional view taken along the BB line in FIG. 5A, and FIG. 5C is a perspective view of the tumbler shown in FIG.
6 is an explanatory view showing an example of a tumbler having a polygonal vertical section usable in the burr removing device in the present invention. FIG. 6A is a side view of the tumbler, FIG. 6B is a B-direction arrow in FIG. 6A, and FIG. 6C is a cross-sectional view taken along the line CC in FIG.
7 is an explanatory view showing a nozzle assembly in the deburring device of Fig. 1;
FIG. 8 is a cross-sectional view showing the shape of a cross section of the injection nozzle in the nozzle assembly of FIG. 7; FIG.
9 is an explanatory view showing a nozzle assembly mounting member usable in the burr removing apparatus according to the present invention. Fig. 9 (A) is an explanatory view showing an example of driving the nozzle and assembly mounting member, and Fig. 9 (B) is an explanatory view showing an example of the configuration of the mounting member.
Fig. 10 is an explanatory view showing a classifying apparatus in the burr removing apparatus of Fig. 1; Fig. Fig. 10A is a side view of the classification apparatus, Fig. 10B is a B-direction arrow in Fig. 10A, Fig. 10C is a cross-sectional view taken along the CC line in Fig. (D) is a sectional view taken along line DD in Fig. 10 (A).
Fig. 11 is a side view showing a reservoir in the deburring device of Fig. 1; Fig.
FIG. 12 is an explanatory view showing a recovery device in the burr removing device of FIG. 1; FIG.
13 is a reference view showing an embodiment of a burr removing device in the present invention. Fig. 13 (A) is an external view showing a burr removing device for opening and closing the door by mechanical power, and Fig. 13 (B) is an external view showing a burr removing device for opening and closing the door by manpower.

An embodiment of the burr removing method of the present invention will be described with reference to the accompanying drawings. Further, the present invention is not limited to the configuration of the present embodiment, and can be appropriately changed as necessary.

Fig. 1 shows a front view (right side in Fig. 1) and a left side view (left side in Fig. 1) of the blast machining apparatus 1 of the present invention. 1, the blast machining apparatus 1 includes a blast machining chamber 10 having a door 10a for loading and unloading the parts W to be treated and a collecting device (collecting means) 30, And these are provided on a base 50 having a moving member, for example, a roller 51. [ A classification device (separation means) 20 in which a reservoir (storage means) 21 for storing the jetting material is connected is connected to the blast processing chamber 10.

2, the blasting chamber 10 is provided with a hollow tumbler 11, a rotating mechanism (rotating means) 12, a nozzle assembly 13, and a nozzle assembly mounting member Assembly mounting means 14 is provided. The number of tumblers 11 to be installed can be arbitrarily set according to the amount of processing of the parts W to be processed. In the present embodiment, four tumblers 11 are provided. The tumbler 11 is a polygonal box-like upper body having an opening at an upper portion thereof or a cylindrical body having a bottom, the details of which will be described later.

As shown in Fig. 3, the tumbler 11 is inserted and held in the tumbler holder 11a. In order to hold the inserted tumbler 11 in the tumbler holder 11a, a bolt or the like may be used, and a hooking means such as a screw may be provided for both of them, and the method is not particularly limited. In this embodiment, a convex hook (not shown) is formed in the tumbler holder 11a, and the outer wall of the tumbler 11 is engaged with the hook so that the hook can be detachably attached by one touch. A rotation shaft 11b is provided at the center of the bottom surface of the tumbler holder 11a and a first drive transmitting member 11c is attached to the rotation shaft 11b. In the present embodiment, a sprocket is used as the first drive transmission port 11c.

The rotating mechanism (rotating means) 12 is constituted by a motor (rotation generating means) 12a and a base 12d. In the present embodiment, two bearings 12e are provided on the rotating mechanism (rotating means) 12 with respect to the rotating shaft 11b of one tumbler holder 11a as shown in Fig. 3, The tumbler holder 11a in which the tumbler 11 is held is held by a rotating mechanism (rotating means) 12. In the present embodiment, only one motor 12a is used, and the motor 12a is installed on the base 12d.

As shown in Fig. 4, a second drive transmission port 12c is attached to the rotary shaft 12b of the motor (rotation generating means) 12a. The second drive transmission port 12c has a shape in which the first drive transmission port 11c is tuned and operated. For example, when the first drive transmission port 11c is a sprocket as in the present embodiment, the height of the second drive transmission port 12c and the distance between the mountain and the mountain are larger than the first drive transmission port 11c ).

Or a pulley (not shown) is used as the first drive transmission port 11c, the second drive transmission port 12c is formed into a pulley having the same groove shape and groove depth as the first drive transmission port 11c. Thus, in this embodiment, the sprocket having the same height as the mountain of the sprocket which is the first drive transmission port 11c and the same distance between the mountain and the mountain is used as the second drive transmission port 12c.

The second drive transmission port 12c and all the first drive transmission ports 11c are connected by the drive transmission member 12f so that the rotational force of the motor (rotation generating means) 12a is transmitted to all the tumblers 11. [

In this embodiment, a chain is used as the drive transmitting member 12f, and the chain 12f rotates the sprocket (the rotational force of the second drive transmission port 12c) of the rotation shaft 12b of the motor To the sprocket (first drive transmission port) 11c of the rotating shaft 11b of the tumbler holder 11a (not shown in FIG. 4), so that the rotating shaft 12b of the motor (rotation generating means) All the tumbler holders 11a rotate, and further, all the tumblers 11 rotate.

Next, the shape of the tumbler 11 will be described with reference to Figs. 5 and 6. Fig. The tumbler 11 has a substantially hollow body and has an opening 11d for injecting and discharging the part W to be processed and spraying the part to be treated W toward the upper end of the tumbler 11, Is closed. The wall surface forming the outer periphery of the tumbler 11 has a plurality of through holes 11i. When the burr is removed, the tumbler 11 is rotated to stir the plural parts W to be processed into the tumbler in a fluidized state. That is, all of the parts W to be treated appear (appear) on the opening side without staying in the bottom part or the wall part of the tumbler 11, thereby removing burrs from all the parts W to be processed. In order to efficiently perform the stirring, the shape of the cross section of the tumbler 11 parallel to the opening 11d is preferably polygonal or circular. In the case of a circular cross section, it is preferable to provide a stirring promoting member 11e on the inner wall of the tumbler 11 (see Fig. 5). The stirring promoting member 11e may be a well-known structure for promoting stirring of the part W to be treated in the tumbler 11, such as a plate or rod-like member protruding to the inner surface.

In order to prevent the to-be-processed part W from staying in the bottom of the tumbler 11 regardless of the sectional shape parallel to the opening 11d of the tumbler 11, It is preferable to provide an agitation-promoting surface 11h in which the inner diameter (cross-sectional area) of the tumbler 11 is continuously decreased toward the bottom portion. According to the experiment, the inclination angle? ₁ of the agitation promotion surface 11h is remarkably effective when it is in the range of 115 ° to 135 °. The through hole 11i is formed so as to prevent the jetting material from staying inside the tumbler, and the diameter thereof is such that the jetting member can pass but the part to be treated does not leak from the through hole.

It is also possible to attach the convex ring 11j to the inner surface of the opening 11d of the tumbler 11 because the sprayed part W to be sprayed leaks from the tumbler 11 when the agitation is performed more effectively good. The height 11k of the convex portion protruding to the inner surface is preferably 1 to 8 mm, more preferably 3 to 6 mm, which does not disturb entry of the jetting material from the opening.

Further, by inclining the tumbler 11, the stirring is more effectively performed. The inclination angle [theta] (see FIG. 2) of the tumbler 11 for the purpose is preferably in the range of 20 to 40 degrees, more preferably in the range of 27 to 32 degrees. At this time, a diameter (sectional area) of the tumbler 11 toward the opening 11d is near the opening of the tumbler 11 so that the part W to be processed does not leak out from the tumbler 11 during deburring due to tilting of the tumbler 11 It is preferable to provide the leakage preventing surface 11f which is continuously reduced. However, when the leakage preventing surface 11f is formed at approximately 90 degrees with respect to the side wall surface 11g of the tumbler 11, irrespective of the installation angle of the nozzle assembly 13, 11g and the leakage preventing surface 11f can not be sprayed onto the parts W to be processed in the cone portion. The angle formed by the leak-barrier surface 11f and the side wall surface 11g of the tumbler 11 (in other words, the angle between the leakage preventing surface 11f and the tumbler 11) θ ₂ ) is preferably in the range of 115 ° to 135 ° according to the experiment.

As shown in Fig. 6, the tumbler 11, which is hollow and has a bottom portion used in this embodiment, has an octagonal shape in cross section parallel to the opening 11d, and the inclination angle? ₁ is 118 ° and the leakage preventing surface 11f having the inclination angle θ ₂ of 132 °.

The rotating mechanism 12 for holding and rotating the tumbler 11 through the tumbler holder 11a is arranged such that the inclination angle? Of the tumbler 11 is 30 degrees as described above.

Next, referring to Fig. 7, the nozzle assembly 13 for burr removal will be described. The nozzle assembly 13 is composed of a nozzle holder 13a, an air nozzle 13b, and an injection nozzle 13c. The nozzle holder 13a has a spray material supply port 13d for injecting the spray material and the inside of the nozzle holder 13a is provided with a path for passing the spray material introduced from the spray material supply port 13d 13e, and a mixing chamber 13f. In the mixing chamber 13f, the compressed air introduced through the air nozzle 13b and the jetting material coming from the path 13e are mixed.

The air nozzle 13b has a compressed air injection port 13b _o for injecting compressed air at one end and has a cylindrical shape with an inner diameter narrowed toward the injection port 13b _o . The air nozzle 13b is connected to the nozzle holder 13a such that the side of the compressed air supply port 13b _i opposed to the compressed air injection port 13b _o projects from the base end of the nozzle holder 13a. Respectively. The base end of the nozzle holder 13a is connected to a compressed air supply source (not shown) through a hose (not shown) via a supply port 13b _i of the air nozzle 13b have. The compressed air introduced from the compressed air supply source is injected into the nozzle holder 13a. At this time, a negative pressure is generated inside the nozzle holder 13a. By using the negative pressure, the injection material is sucked into the nozzle holder 13a from the injection material supply port 13d and introduced. The injection material introduced from the injection material supply port 13d passes through the injection material passage 13e and is guided to the mixing chamber 13f and mixed with the compressed air introduced into the nozzle holder 13a. In this embodiment, the injection material supply port (13d) is the, storage group (21) and the tubing injection material which is stored inside the storage group (21), for storing it in communication with the (H ₂₎ as described below It sucks.

The injection nozzle 13c has a hollow structure in which both ends are opened and a cross sectional area _S13ci of the compressed air and the injection port on the side of the supply port 13c _i of the solid- Sectional area S _13co on the side of the jet port 13c _o of the gas _{mist abnormality} . The cross-sectional shape of the supply port 13c _i and the injection port 13c _o may be a polygon including a circle or a rectangle. In the present embodiment, the cross-sectional shapes of the supply port 13c _i and the injection port 13c _o are circular. The injection nozzle 13c is arranged so that the center line in the longitudinal direction of the air nozzle 13b is positioned approximately on the same line as the center line connecting the center points of the supply port 13c _i and the injection port 13c _o of the injection nozzle 13c , And the mixing chamber (13f) and the supply port (13c _i ) are communicated with each other. The solid-gas abnormal flow generated in the mixing chamber 13f passes through the inside of the injection nozzle 13c from the supply port 13c _i and is injected from the injection port 13c _o .

At least one of the connecting portion between the nozzle holder 13a and the air nozzle 13b and the connecting portion between the nozzle holder 13a and the jetting nozzle 13c and more preferably both, It is preferable to provide the sealing member 13g. When the compressed air introduced into the nozzle holder 13a leaks from the gap of the connecting portion, the negative pressure generated inside the nozzle holder 13a is reduced to lower the suction force of the jetting member, Can be suppressed. In the present embodiment, grooves are formed on the outer circumference of the air nozzle 13b and the spray nozzle 13c, and an O-ring is inserted into the groove as the sealing member 13g.

In the air nozzle 13b and the jetting nozzle 13c, the shape in which the inner diameter is narrowed from each of the supply ports 13b _i or 13c _i toward the respective jetting ports 13b _o or 13c _o , (See Fig. 8 (C)), a shape that narrows stepwise, a shape that includes a space of the same diameter (see Fig. 8 (B)), a shape that becomes thicker D)), or a combination thereof (for example, a shape in which the same diameter is continuously continuous after narrowing down continuously (see FIG. 8 (A)).

In the present embodiment, since four tumblers 11 are provided, four nozzle assemblies 13 are provided. The nozzle assembly 13 is attached to the blasting chamber 10 by the nozzle assembly mounting member 14 as shown in Fig. 9 (A). Since the tumbler 11 of the present embodiment is inclined and has the leakage preventing surface 11f, the nozzle assembly 13 is attached to this shape. The mounting member 14 is formed by an arm having at least one or more movable members from an attachment portion in the blast machining chamber 10 to a nozzle attachment portion.

9 (A), the nozzle assembly 13 is fixed to the tumbler 11 by forming a nozzle assembly mounting member 14 capable of pivotally engaging a plurality of prismatic members with a plurality of cylindrical members, In the up, down, left, and right directions. The location where the nozzle assembly mounting member 14 is installed in the blast processing chamber 10 is not particularly limited. In this embodiment, the nozzle assembly mounting member 14 is disposed on the base 12d (see FIG. Specifically, as shown in Fig. 9 (B), the first, second, and third embodiments, which are engaged with the base 12d (not shown in Fig. 9 (B) The third, fourth, and fifth arms 14a, 14b, 14c, 14d, and 14e are as follows.

Base 12d: A columnar member is provided at a position suitable for mounting each nozzle assembly 13.

The first arm 14a is formed as a prismatic member and has a first hole having the same diameter as the cylindrical member in the longitudinal direction (the vertical direction of the paper surface of Fig. 9 (B)), ) Are inserted into the cylindrical member. Also, the second hole 14b has a second hole having the same diameter as the second arm 14b in the height direction (vertical direction of the sheet).

Second arm 14b is formed as a cylindrical member, and the lower end of the second arm 14b is engaged with the second hole of the first arm 14a.

The third arm 14c is formed as a prismatic member and has a third hole having the same diameter as the second arm 14b in the height direction of one end (the right side in Fig. 9 (B)), The upper end of the arm 14b is engaged and engaged. The other end has a fourth hole having the same diameter as that of the fifth arm 14e in the direction perpendicular to the paper surface, and one end of the fifth arm 14e is engaged with the fifth hole 14e.

The fourth arm 14d is formed as a prismatic member and has a fifth hole having the same diameter as that of the cylindrical member which is the fifth arm 14e in a direction perpendicular to the one end (the right side of Fig. 9B) And a cylindrical member such as a fifth arm 14e is fitted and engaged with the hole. In addition, a holder (not shown) for holding the nozzle assembly 13 is provided near the other end.

The fifth arm 14e is formed of a cylindrical member and one end thereof (the inner side with respect to the paper surface of Fig. 9 (B)) is engaged with the fourth hole of the third arm 14c, Is engaged with the fifth hole of the fourth arm 14d.

Here, the holder of the nozzle assembly 13 is not particularly limited. For example, it may be fixed to the fourth arm 14d with a bolt or the like, and it may be held by a clamping mechanism. Further, it is also possible to improve the degree of freedom of installation of the nozzle assembly 13 by configuring the holding hole itself to be rotatable.

The burr removing apparatus of the present embodiment has a structure in which the mounting member 14 of the nozzle assembly 13 moves in conjunction with opening and closing of the door 10a. That is, when the door 10a is closed, the nozzle assembly 10 may be provided so as to spray the injection material inside the tumbler 11 such that the door 10a is opened, (13).

Referring to FIG. 10, the jetting member jetted from the nozzle assembly 13 and the dust generated by the burr removal are classified to obtain a jetting member which can not be reused and the dust (hereinafter referred to as "dust" (Separating means) 20 for taking out a reusable jetting material at the same time as the jetting device (separating means) 20 will be described. The classification apparatus 20 is provided with a first tubular body 20a whose upper surface is abolished by a ceiling having a suction member 20c and which has a continuous sectional area and which has a charging member 20d on its side surface, And a second tubular body 20b having a smaller diameter (cross-sectional area) continuously is connected. A reservoir (21) is connected to the lower surface of the classification device (20). Feeding member (20d) is concatenated to the blasting chamber (10) through a duct (D ₁₎ (FIG. 1). Further, the suction member (20c) is concatenated to the recovery device 30 through a duct (D ₂₎ (Fig. 1). That is, the space in the blast processing chamber 10, the space in the classification device 20, the space in the reservoir 21, and the recovery device 30 form a continuous space.

The reservoir 21 for reserving the reusable jetting material taken out by the classifying device 20 includes a third tubular body 21a connected to the bottom of the classifying device 20, And a fourth tubular body 21b having a smaller diameter (cross-sectional area) continuously downward. The fact that the diameter (sectional area) is continuously reduced means that not only the diameter (sectional area) is uniformly decreased downward but also the decreasing rate of the diameter (sectional area) may be stepwise different, and the same diameter May be included. That is, it is not necessary to include a section in which the diameter (cross-sectional area) increases toward the downward direction. In this case, the angle? ₃ formed by the side wall of the fourth tubular body 21b with respect to the horizontal plane is set to be in the range of 73 ° to 87 °.

If the angle is smaller than 73 degrees, a phenomenon that the jetting material in the reservoir 21 can not be taken out due to bridging phenomenon tends to occur. In order to prevent such a phenomenon, the angle is preferably large, but when the angle is larger than 87 degrees, the discharge assistant 21d described later is enlarged. Therefore, in order to efficiently extract the jetting material from the reservoir 21 and reduce the discharge assistant port 21d, it is preferable that the angle? ₃ is set in the range of 73 ° to 87 °. A spray material outlet 21c for supplying the spray material stored in the reservoir 21 to the nozzle assembly 13 is provided in the vicinity of the lowermost surface. Injection material outlet (21c) is concatenated with injection material supply port (13d) of the nozzle, the assembly 13 through the hose (H ₂₎ (Fig. 2). A discharge auxiliary port 21d is provided on the lowermost surface of the fourth tubular body 21b to discharge the jetting material stored in the reservoir 21 for exchange or the like. As the discharge auxiliary port 21d, a butterfly valve is used in the present embodiment, but a ball valve or a gate valve may be used instead. The tubular bodies 21a and 21b of the reservoir 21 may be cylindrical or may be a tubular body having a polygonal cross-section. In the present embodiment, a tubular body having a rectangular cross-section is used.

The classifier 20 and the reservoir 21 are provided so that at least the jet port 21c of the reservoir 21 is disposed in the blast machining chamber 10. However, The installation location is not particularly limited as long as there is no problem in supplying the fuel to the fuel cell stack 13.

In the present embodiment, the recovery device 30 for recovering the dust includes a dust collector for enclosing a filter fabric for separating solid (dust) and gas from solid-gas abnormal flow (two-phase flow) Respectively.

As a method of removing dust accumulated on the filter cloth at the time of recovery, a pulse jet system in which compressed air is intermittently sprayed onto the filter cloth was used. However, the method is not particularly limited, and for example, a mechanical method of dropping it by a mechanical means may be used.

12, the recovery device 30 is provided with a discharge port 31 for discharging the dust stored in the bottom of the recovery device 30 to the outside of the recovery device 30, . In this embodiment, the discharge port 31 is a ball valve, but a gate valve, a rotary valve, or the like may be used instead.

(Example)

Next, burr removal by the burr removing device of the present embodiment will be described. In this embodiment, processing for roughening a ceramic-based member of 0.8 x 1.6 mm as the part to be treated W will be described. In this specification, the term " small-sized part to be treated " refers to a part to be processed having a diameter or a size of about 30 mm or less on the side of the part to be treated. Particularly, Can be suitably used.

The door 10a of the blast processing chamber 10 is opened to take out the four tumblers 11 from the inside of the blast processing chamber 10 and transfer the processed parts W to the respective tumblers 11 in substantially the same amount (The same amount). Thereafter, the tumbler 11 is again engaged with the tumbler holder 11a, and the tumbler 11 is set in the blasting chamber 10. The injection material (zirconia material in this embodiment) is injected into the blast processing chamber 10 in a required amount, and the door 10a is closed. The opening and closing of the door 10a may be manual, but may be performed by a mechanical operation such as an air cylinder.

Next, by operating the recovery device 30, the injection material is transferred into the classification device 20 by the suction force generated from the recovery device 30, and then stored in the storage device 21.

Next, by operating the motor 12a, the four tumblers 11 rotate. By this rotation, the part W to be treated in the tumbler 11 is agitated.

Next, a compressed air source is activated, and a negative pressure is generated inside the nozzle assembly 13, for example, by ejecting compressed air having a pressure of 0.7 MPa from the air nozzle 13b. By this negative pressure, the jetting member is supplied to the nozzle assembly 13 and is jetted together with the compressed air from the jetting port 13c _o . And the burrs are removed by colliding the injected injection material against the surface of the part W to be treated. Further, since the part W to be processed is stirred by the rotation of the tumbler 11, all the parts W to be treated are sequentially exposed to the spraying material, and the burrs of all the parts W to be treated can be removed have.

The mixture of the injected jetting material and the dust generated by the burr removal is conveyed to the classifying device 20 through the duct D ₁ by the suction force generated from the recovery device 30. In the classifying device 20, a swirling air current is generated by the suction force generated by the collecting device 30. That is, since the suction force is generated from above the classifying device 20, the jetting material and the dust injected into the classifying device 20 are separated from each other by the spiral airflow, The light powder moves upward. That is, the reusable jetting material moves downward because it is heavier than dust, is stored in the reservoir 21, is again injected from the nozzle assembly 13 through the hose H ₂ , and the dust is moved upward And is transferred to the recovery device 30 through the duct D ₂ . The dust transferred to the recovery device 30 is deposited on the surface of the filter fabric inside the recovery device 30. [ The dust deposited on the surface of the filter cloth is dropped by the pulse jet and stored in the bottom portion. The stored dust is discharged to the outside of the recovery device 30 by opening the discharge port 31.

When the part W to be processed has been processed to the desired shape, the operation of the compressed air supply source is stopped. At this time, the rotation of the motor 12a is still continuing. This is for discharging the jetting material remaining in the tumbler 11 to the outside through the through hole 11i of the wall surface. Likewise, the operation of the recovery apparatus 30 is still continuing. Since the inside of the blast processing chamber 10 is filled with the jetting material and the dust, the jetting material is stored (collected) in the reservoir 21 through the classifying device 20, 30).

When the injection material in the tumbler 11 is discharged and the injection material and the dust inside the blasting chamber 10 have been collected, the motor 12a and the recovery device 30 are stopped from operating, The door 10a of the door 10 is opened and the part W to be processed is taken out to complete burr removal.

When it is necessary to discharge the jetted material stored in the reservoir 21 to replace the jetted material because the object to be treated W is changed or the purpose of processing is changed, 21d to open the injection material.

When the tumbler 11 needs to be changed to another shape in the case where the part W to be processed is changed or the like, the position of the nozzle assembly 13 is adjusted by driving the nozzle assembly mounting member 14, The tumbler 11 can be easily exchanged.

Fig. 13 shows an example of the burr removing apparatus 1 according to the present embodiment. Fig. 13 (A) is a blast apparatus in which the door 10a is opened and closed by mechanical power (air cylinder in this case), and Fig. 13 (B) is a blast apparatus in which opening and closing of the door 10a is performed by an attractive force .

If the specific gravity of the spray material is too small, a sufficient burr removal effect can not be obtained. If the specific gravity is too large, cracks or defects of the parts to be treated caused by the spray material may result. If the average diameter of the jetting material is less than 0.02 mm, the effect of sufficient burr removal is not obtained. If the average diameter of the jetting material is larger than 0.08 mm, the impact of the jetting material on the burr removal area becomes insufficient. If the injection pressure is too low, a sufficient burr removal effect can not be obtained. If the injection pressure is excessively high, cracks or defects may occur in the part to be treated.

That is, in order to remove burrs without causing cracks or defects in the product to be treated, the specific gravity of the spray material is preferably 1.0 to 3.0, the average diameter of the spray material is 0.02 to 0.08 mm, the spray pressure of the above- Or less.

When the distance from the opening of the nozzle tip for discharging the gas mixture containing the jetting material to the core member made of bulk ceramics as the to-be-processed part W is shorter than 200 mm, the jetting material is sufficiently supplied into the bulk shape ceramics So that the injected jetting material becomes useless. On the other hand, if it is larger than 500 mm, the jetting material will collide only sporadically with the part to be treated, and the burr removal becomes insufficient. It is preferable that the distance from the opening of the nozzle tip to the part to be processed is 200 mm or more and 500 mm or less in order to efficiently remove the burr without excessive spreading of the jet flow. Further, it is more preferable that the length is 200 mm or more and 300 mm or less. Such a proper distance does not cause cracks or defects in the part to be treated.

When the core member is tumbled so that the difference in rotational speed between the injection center and the jetting outer circumferential portion in the jetting range of the jet of the jetting material mixed with the jetting material at the position of the core member made of the bulk ceramic is not less than 32 mm / s and not more than 64 mm / good.

The smaller the rotational speed difference, the lower the burr removal efficiency. If the rotational speed difference is large, the core members collide with each other, causing cracks or defects.

It is preferable that the rotational speed difference is not less than 32 mm / s and not more than 64 mm / s in order to efficiently remove burrs without causing cracks or defects as the core members collide with each other.

If the hardness of the spray material is too low, a sufficient burr removing effect can not be obtained. If the hardness of the spray material is excessively high, cracks and defects may occur in the parts to be treated. By setting the hardness of the jetting material to be HV1000 to 2500, it is possible to efficiently remove the burrs of the core member of the bulk shape ceramics.

The core member made of the bulk shape ceramics has a flange gap of 0.3 mm to 0.8 mm and is an inductor member or a coil member of an electronic component manufactured by plastic molding and then fired and made of alumina or silicon carbide in a polygonal shape There are many. Thus, the jetting material having an average diameter of 0.02 to 0.08 mm is jetted at least toward the clearance of the plurality of flanges and the peripheral edge of the connection edge of the winding core portion or the winding core portion.

As a result, it is possible to inject an injection material of a suitable size with respect to the clearance between the inductor member of the electronic component or the flange of the coil member, thereby effectively removing burrs.

Although specific embodiments have been described with reference to the present invention, numerous modifications and variations are possible. For example, the nozzle assembly 13 may be of the so-called direct-pressure type as long as it can secure a space for installing additional equipment such as a pressurizing tank.

Although the tumbler holder 11a is used to rotate and hold the tumbler 11 in the above-described embodiment, the embodiment using the tumbler 11 having the drive shaft at the bottom portion is omitted, Please note that this is possible.

The injection material is a so-called cut wire, ceramics system, resin system, vegetable system, etc. in which a shot or a grit or a fine wire of an iron system or a non-iron system is cut (or the rounded edge is rounded after cutting) , As long as it is generally used as a jetting material for burr removal.

(Industrial availability)

Although the burr removal of the to-be-processed part W formed of a hard material has been described in the above embodiment, the burr removal device of the present invention is not limited to the burn- It can be applied to the entire deburring elimination.

Hereinafter, the main codes used in this specification or the drawings are collectively shown.

One; Burr removal device
10; Blast processing room
10a; door
11; Tumbler
11a; Tumbler Holder
11b; Rotating shaft
11c; The first drive transmission member (sprocket)
11d; Opening
11e; The agitation promoting member
11f; Leakage prevention surface
11g; Side wall surface
11h; Agitation promoting face
11i; Through hole
11j; A convex ring
11k; Height of convex portion
12; The rotating mechanism (rotating means)
12a; Motor (rotation generating means)
12b; Rotating shaft
12c; The second drive transmission member (sprocket)
12d; Base
12e; bearing
12f; Drive transmission means (chain)
13; Nozzle assembly
13a; Nozzle holder
13b; Air nozzle
13b _i ; Compressed air supply port of air nozzle
13b _o ; Compressed air injection port of air nozzle
13c; Injection nozzle
13c _i ; The supply port of the solid-gas abnormal flow (two-phase flow)
13c _o ; Solid-gas abnormal flow injection port
13d; Injection supply port
13e; Injection path
13f; Mixing room
13g; The sealing member
14; The nozzle assembly mounting member (nozzle assembly mounting means)
14a; The first arm
14b; The second arm
14c; The third arm
14d; The fourth arm
14e; The fifth arm
20; Classification device (separation means)
20a; The first cylindrical body
20b; The second cylindrical body
20c; Suction member
20d; Input member
21; Storage means
21a; The third cylindrical body
21b; The fourth cylinder
21c; Injection ejection means
21d; Discharge aid
30; Recovery means
31; outlet
50; The base
51; The moving member (roller)
H ₁ ; Hose (for introduction of compressed air)
H ₂ ; Hose (for supplying injection material)
D ₁ ; Duct for classifier
D ₂ ; Duct for recovery device
W; Parts to be processed

Claims (14)

There is provided a burr removing treatment method for removing a burr formed in a gap of a plurality of flanges of a core member made of bulk ceramics having a plurality of flanges and a core portion,
A step of charging a plurality of core members into a tubular tubular tumbler having an opening at one end and closed at the other end,
Rotating the tumbler to stir the plurality of core members,
(Jet flow) of a gas mixed with a small jetting material from a clearance of the flange toward a burr formed in a gap of a plurality of flanges of a core member made of the bulk ceramic through the opening portion and,
A step of discharging the injected jetting material from the through hole formed in the wall surface of the tumbler to the outside of the tumbler
Wherein the core member is made of a bulk ceramics. The method according to claim 1,
Wherein the spray material has a specific gravity of 1.0 to 3.0, an average diameter of the spray material is 0.02 to 0.08 mm, and an injection pressure of the above classification is 0.03 MPa or more and 0.15 MPa or less. The method according to claim 1,
And a distance from an opening of a nozzle tip through which the jetting material is jetted to a core member made of bulk ceramics is 200 mm or more and 500 mm or less. The method for removing burrs of a core member made of bulk ceramics . The method according to claim 1,
The core member is tumbled such that the difference in rotational speed between the injection center and the jetting outer circumferential portion in the jetting range of the jetting of the gas mixture containing the jetting material at the position of the core member made of the bulk ceramic is not less than 32 mm / s and not more than 64 mm / Wherein the core member is made of a bulk ceramics. The method according to claim 1,
Wherein the injection material has a hardness of HV1000 to 2500. The method according to claim 1,
The core member made of the above-mentioned bulk-shaped ceramics has a polygonal shape as an inductor member or a coil member of an electronic component manufactured by baking after molding molding with a gap of 0.3 mm to 0.8 mm in a flange, A method for removing burrs in a core member made of a bulk ceramics, the method comprising: spraying an injection material made of silicon and having an average diameter of 0.02 to 0.08 mm. 3. The method of claim 2,
Wherein a distance between the opening of the nozzle tip for discharging the gas mixture containing the jetting material and the core member made of bulk ceramic is 200 mm or more and 300 mm or less, A method for removing burrs of a core member made of bulk shape ceramics. A burr removing apparatus for use in a burr removing method of a core member according to any one of claims 1 to 7, comprising: a plurality of tumblers; at least one or more rotating mechanisms for rotating the plurality of tumblers; Wherein a plurality of through holes are formed in a wall surface forming the outer periphery of the tumbler and an agitation promoting member is provided on an inner wall of the tumbler, Of the burr. 9. The method of claim 8,
Wherein the opening of the tumbler and the nozzle assembly are opposed to each other and the injection of the jetting material causes convexity formed in a gap between a plurality of flanges of the plurality of core members inserted into the bottomed tubular tumbler from the opening of the tumbler Wherein the burr removal is performed toward the negative burr. 10. The method of claim 9,
Wherein the tumbler is inclined at an angle of 20 to 40 degrees. 11. The method of claim 10,
Wherein the tumbler is a polygonal box shaped article having an opening at the top or a bottomed cylindrical shaped article. 12. The method of claim 11,
The distance between the opening of the nozzle tip for discharging the gas mixture containing the jetting material and the core member made of bulk ceramics is set to be smaller than the distance from the nozzle assembly opening member Wherein said control means controls said current to be within a predetermined range. 13. The method of claim 12,
Wherein the nozzle assembly assembly moves the nozzle assembly after the injection is completed by the nozzle assembly mounting member to replace the tumbler. 14. The method of claim 13,
The nozzle assembly includes an air nozzle for introducing compressed air into the nozzle holder and generating a negative pressure inside the nozzle holder,
A nozzle holder having a path through which a jetted material sucked by the negative pressure generated inside the nozzle assembly passes and a mixing chamber for mixing the jetted material with the compressed air;
And a jet nozzle for jetting the compressed air mixed in the mixing chamber and the jetting member toward the core member,
Wherein at least one of a connection portion between the nozzle holder and the air nozzle and a connection portion between the nozzle holder and the injection nozzle has a sealing member.

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