KR101244236B1 - Parts Supply Apparatus - Google Patents

Abstract

The present invention can improve the durability and at the same time have a diaphragm capable of freely selecting the rigidity to excite the vibration appropriately, and also improve the dustproof efficiency, and at the same time increase the height of the center of the mass on the spring The present invention relates to a component supply apparatus capable of lowering and conveying a stable component and lowering the component supply apparatus itself.

In the component supply apparatus of the present invention, the piezoelectric element 411 is adhered to the flat plate-shaped elastic member 420, and the thickness may be selected such that the rigidity of the vertical plate portion becomes higher than that of the horizontal plate portion of the diaphragm 400. The thickness can be increased so that the rigidity of the coupling portion of the horizontal plate portion and the vertical plate portion can be increased, and the base portion 301 is formed by a support spring 380 connected to the weight portion 302 and the piezoelectric vibrating portion 303. And the leaf vibration damping plate spring 390 connected to the piezoelectric vibrator 303 in the vertical direction.

Description

Parts Supply Apparatus}

BRIEF DESCRIPTION OF THE DRAWINGS The schematic diagram which shows an example of the micro component supply apparatus which concerns on one Embodiment of this invention.

2 is a schematic diagram showing an example of a micro component supply device according to an embodiment of the present invention.

3 is a schematic perspective view showing an example of the shape of a micro component conveyed in the present embodiment.

4 is a schematic side view of a portion of the linear feeder according to the first embodiment;

FIG. 5 is a schematic assembly diagram illustrating an example of the diaphragm of FIG. 4. FIG.

6 is a schematic side view of the diaphragm of FIG. 5.

FIG. 7 is a schematic side view for explaining an example of low magnification of the linear feeder according to the present embodiment shown in FIG. 4. FIG.

The schematic diagram which shows an example of the structure of a support spring and the vibration damper leaf spring.

FIG. 9 is a schematic cross-sectional view for explaining the structures of the support spring and the vibration damping leaf spring of FIG. 8. FIG.

10 is a diagram for explaining the effect of the linear feeder.

11 is a diagram for explaining the effect of the linear feeder.

12 is a side view showing another example of the diaphragm of FIGS. 5 and 6;

FIG. 13 is a side view showing still another example of the diaphragm of FIG. 5 and FIG.

14 is a schematic side view illustrating still another example of the linear feeder in FIG. 7.

FIG. 15 is a schematic diagram showing an example of the structures of the support spring and the vibration leaf leaf spring of FIG. 14. FIG.

It is a schematic diagram which shows an example of the structure of the support spring of FIG. 14, and the leaf spring for antivibration.

17 is a schematic side view illustrating still another example of the linear feeder.

It is a schematic diagram for demonstrating the rocking direction in the support spring of the conventional part feeder, and the rocking direction in the antivibration leaf spring.

DESCRIPTION OF REFERENCE NUMERALS

100 Micro component feeder 300, 300 a, 300 b Linear feeder

301 base part 302 weight part (counter weight)

303 Piezoelectric vibration part 304 Vibration transmission part

320 first conveying member 330 second conveying member

350 Third conveying member 370 Connecting plate

380 ° Support Spring 390 Dustproof Leaf Spring

400, 400 a, 400 b 동 vibration plate 410 elastomer

      411 Piezoelectric Element

      412, 420, 420 a, 420 b Flat elastic member

421, 421b Flat elastic member

422 Coupling Member L1, L2, (L1 + L2) Thickness

800 Small parts

The present invention relates to a component supply apparatus for transferring a component by vibration.

Background Art Conventionally, parts feeders have been widely known as one of a parts supply apparatus for aligning parts and supplying parts by vibrating the parts. The part feeder can vibrate the parts to adjust the attitude of the parts to supply the parts to the next process.

As related patents, there is a pamphlet of International Publication No. 2004/067413 (hereinafter referred to as Patent Document 1) and Japanese Patent Application Laid-Open No. 6-13369 (hereinafter referred to as Patent Document 2) and Patent Publication No. 7-257724 (hereinafter referred to as Patent Document). 3) has been disclosed.

Patent Document 1 discloses a piezoelectric driven part that can secure a sufficient amplitude even when driving at a high frequency, and at the same time suppress the stress acting as the vibration generating means, thereby easily changing the vibration generating means or changing and adjusting the resonance frequency. A feeder is disclosed.

In addition, Patent Document 2 discloses a piezoelectric drive type conveying apparatus that can reduce the load applied to the piezoelectric element, thereby achieving an enlargement of the vibration amplitude and obtaining a conveying speed that can be used in a very practical manner.

)와 반송체를 탄성판 모양의 연결 부재의 하단부와 상단부로 각각 연결하고, 또한 이러한 연결 부재의 판의 폭 또는 판의 두께를 변화시켜 연결 부재의 휨 강성을 상기 탄성판의 휨 강성보다 낮게 설정한다.In the piezoelectric drive type conveying apparatus described in Patent Document 2, an excitation body formed by attaching a piezoelectric element to an elastic plate (

) And the carrier are respectively connected to the lower end and the upper end of the elastic plate-shaped connecting member, and the width or thickness of the plate of the connecting member is changed to set the bending rigidity of the connecting member to be lower than the bending rigidity of the elastic plate. do.

In this way, the elastic deformation at the portion where the bending rigidity is lowered during vibration allows the angle change between the excitation body and the carrier body to decrease the load on the excitation body, thereby reducing the vibration amplitude in the vibration body and the carrier body. You can expect to increase.

In addition, Patent Document 3 discloses a piezoelectric drive type conveying apparatus which enables high speed conveyance of conveying parts by increasing the ratio of bending rigidity due to the location of the connecting member.

In the piezoelectric drive type conveying apparatus described in patent document 3, the connection member which is one of the components of a piezoelectric drive type conveying apparatus is laminated | stacked and made two or more connection members into a laminated connection member.

Thus, by increasing the ratio of the bending rigidity by the part of the connecting member more remarkably than before, the high speed conveyance of a conveying component can be attained.

However, there are two problems in the conventional parts feeder. Hereinafter, the problem will be described in each case.

) 및 반송로를 순서대로 아래에서 부터 쌓아 올리는 구성으로 되어 있기 때문에 지지 스프링에 있어서의 요동 방향과 방진용 판 스프링에 있어서의 요동 방향이 상반되어 균일한 진동을 반송로에 가할 수 없다고 하는 문제가 있었다. 이하, 상세하게 설명하기로 한다.First of all, in the conventional part feeder, the base part, the counter weight, the excitation part (

) And the conveying path are stacked in order from the bottom, so that the swing direction in the support spring and the swing direction in the antivibration leaf spring are opposite, and uniform vibration cannot be applied to the conveying path. there was. It will be described in detail below.

FIG. 18: is a schematic diagram for demonstrating the rocking direction in the support spring of the conventional part feeder 900, and the rocking direction in the antivibration leaf spring.

As shown in FIG. 18, although the support spring 980 which connects the excitation part 902 and the counter weight 903 is the state which rocked in the direction of arrow R1 in a figure, the counter weight 903 and the base part ( The antivibration leaf springs 990 connecting 901 swing in the direction indicated by the arrow R11 in the drawing, and the bending modes of the vibration dampers are reversed in phase, and swing in opposite directions. As a result, vibration was not stabilized in the conveyance path 905, and there existed a problem that conveyance of components stopped or conveyed in reverse.

Furthermore, in the component supply apparatus using the support spring 980 and the anti-vibration leaf spring 990, the size of the component supply device (H in the drawing) is used to arrange the support spring 980 and the antivibration leaf spring 990 in a straight line shape. ₁₀ ) becomes large.

In addition, not only the component supply apparatus described in patent document 1, but also the component supply apparatus using a general support spring and a vibration damper leaf spring use two types of springs, The distance from the point of the leaf spring became large, and there existed a problem which the instability of the conveyance component, the tilt conveyance, the staying, or the drive instability of the component supply apparatus, and the left and right shake were produced.

Next, the second problem will be described. As a second problem, in the piezoelectric drive type transfer device described in Patent Document 2, the piezoelectric drive type transfer device is driven by resonating the connection spring by providing a direct connection spring to a piezoelectric spring that excites vibration. The load of the carrier body or the spiral carrier path is directly applied to the piezoelectric spring. Therefore, since the vibration is excited while supporting the load, a problem arises in that an appropriate vibration cannot be excited with respect to the piezoelectric spring.

In addition, even in the case of exciting the vibration, the problem of lifespan remains because the load of the carrier is applied to the piezoelectric element as a load in the tip direction different from the driving direction of the original piezoelectric element.

In addition, in the piezoelectric drive type transfer apparatus described in Patent Document 3, piezoelectric drive type transfer described in Patent Document 2 is intended to improve the bending rigidity by attaching a connection spring in series with the piezoelectric element and stacking the connection spring. Like the device, the load of the carrier is directly applied to the piezoelectric spring.

As a result, there still remains a problem in terms of problems and life problems in which vibrations cannot be appropriately excited.

)를 실현할 수 있는 부품 공급장치를 제공함에 있다.An object of the present invention is to improve the dust-proofing efficiency and to lower the height of the center position of the mass on the spring so that the stable conveyance of parts and the lowering of the component supply device itself (

It is to provide a component supply apparatus that can realize ().

It is still another object of the present invention to provide a component supply apparatus having a diaphragm capable of improving durability and freely selecting rigidity to excite an appropriate vibration.

Further, another object of the present invention is to improve the durability, to freely select rigidity, to improve the installation accuracy at the same time, to reduce the number of manufacturing steps and maintenance steps, and to appropriately excite vibrations. In addition, the present invention provides a component supply apparatus having a diaphragm capable of improving dustproof efficiency and lowering the height of the center position of the mass on the spring to realize stable conveyance of components and lowering of the component supply apparatus itself.

)와, 상기 가진부와는 별도의 부재로서 설치되는 추부와, 일단이 상기 가진부에 장착되고, 타단이 상기 추부에 장착되어 탄성변형이 가능한 구동부재와, 전기적 신호에 의해 응력을 발생하는 진동자와, 수평 으로 배치되는 수평판 부분 및 연직(

)으로 배치되는 연직판 부분을 가지며, 상기 연직판 부분의 앞뒷면의 적어도 일면에 상기 진동자가 점착되어, 진동을 여기하는 진동판을 포함하고, 상기 진동판은, 상기 수평판 부분 및 상기 연직판 부분 중 어느 한쪽이 상기 추부에 장착되고, 상기 수평판 부분 및 상기 연직판 부분의 다른 한쪽이 상기 가진부에 장착되며, 기 수평판 부분 및 상기 연직판 부분이 접합부에서 결합되고, 상기 수평판 부분 및 상기 연직판 부분의 어느 한 쪽의 두께가 적어 도 다른 한쪽의 두께보다 두껍다.(1) The component supply apparatus which concerns on this invention is a component supply apparatus which conveys by vibrating a component, The conveyance part which has a conveyance path for conveying the said component, and the excitation part which supports the said conveyance part (

), A weight provided as a member separate from the vibration part, a driving member having one end mounted to the vibration part, the other end mounted to the weight part, and capable of elastic deformation, and a vibrator generating stress by an electrical signal. And the horizontal part and vertically arranged horizontally (

And a vibrating plate which is attached to at least one surface of the front and back surfaces of the vertical plate portion to excite vibration, wherein the vibrating plate is formed of the horizontal plate portion and the vertical plate portion. One of which is mounted on the weight portion, the other of the horizontal plate portion and the vertical plate portion is mounted on the vibrating portion, and the existing horizontal plate portion and the vertical plate portion are joined at the joining portion, and the horizontal plate portion and the At least one of the vertical plates is thicker than the other.

In the component supply apparatus which concerns on this invention, a vibrator adheres to a diaphragm. When an electrical signal is applied to the vibrator, the vibrating plate to which the vibrator is attached is driven, and the vibration is excited to mount the weight mounted on either side of the vertical plate portion and the horizontal plate portion of the diaphragm, and the excitation plate mounted on one side of the diaphragm. The addition oscillates in reverse phase. And a vibration is transmitted to the conveyance part supported by an excitation part, and components are conveyed in the downstream direction from the upstream of a conveyance path | route.

In this case, since the thicknesses of the horizontal plate portion and the vertical plate portion of the diaphragm are different, the rigidity of the horizontal plate portion and the vertical plate portion of the diaphragm can be made different.

Moreover, the thickness in at least the junction part of the horizontal board part and the vertical board part of a diaphragm can be thickened. Accordingly, the component supply apparatus including the diaphragm having the optimum rigidity and the optimum vibration frequency can be realized by increasing the thickness of the portion requiring rigidity or reducing the thickness of the portion to be reduced in rigidity.

Moreover, since the load of the excitation part and the conveyance part in a drive member can be supported, the durability of a diaphragm and a vibrator can be improved, and an appropriate vibration can be excited from the diaphragm to which a vibrator adhered.

(2) The diaphragm includes a second flat plate-like elastic member that forms a horizontal plate portion and a second flat plate-shaped elastic member that forms a vertical plate portion, and a first plate-shaped elastic member that forms a vertical plate portion; And a coupling member for coupling the horizontal plate portion formed by the flat plate-shaped elastic member and the vertical plate portion formed by the second plate-shaped elastic member.

In this case, the diaphragm is formed by combining the first flat elastic member and the second flat elastic member with a coupling member. The first flat plate-like elastic member forming the horizontal plate portion is formed of a member different from the second flat plate-shaped elastic member forming the vertical plate portion.

Therefore, the thickness of the first flat elastic member and the thickness of the second flat elastic member can be adjusted freely. Moreover, rigidity can be raised also with respect to a conventional curved part by using the coupling member.

Since the rigidity between the horizontal and vertical surfaces of the diaphragm can be set to a different value, the diaphragm having the optimum rigidity and vibration frequency is increased by increasing the thickness of the surface where rigidity is required or by reducing the thickness of the portion to be reduced in rigidity. A part supply device can be realized.

Furthermore, since the first flat plate-like elastic member and the second flat plate-shaped elastic member are joined by the coupling member, the single flat plate-shaped elastic member is bent to form a horizontal plate portion and a vertical plate portion. Therefore, the squareness accuracy can be greatly increased. As a result, the difference in the installation position at the time of forming a diaphragm in a weight part and a vibration part can be prevented, and the number of manufacturing processes can be reduced.

Moreover, since the load of the excitation part and the conveyance part can be supported by the drive member provided with the diaphragm, the durability of a diaphragm and a vibrator can be improved, and an appropriate vibration can be excited from a diaphragm and a vibrator.

(3) The diaphragm is made of a flat plate-shaped elastic member having a long direction in an elongated shape and having a portion thicker than a region having a different thickness in some areas along the long direction. The thick portion may be bent to form a vertical plate portion and a horizontal plate portion.

In this case, since either thickness of a horizontal board part and a vertical board part can be made thin by a process, the thickness of a horizontal board part and the thickness of a vertical board part can be adjusted freely. As a result, the rigidity between the horizontal plate portion and the vertical plate portion of the diaphragm can be made different.

Therefore, by supplying a thickness of the surface on which rigidity is required or reducing the thickness of the portion to be reduced in rigidity, a component supply apparatus including a diaphragm having an optimum rigidity and an optimal vibration frequency can be realized.

(4) The conveyance path may be a linear conveyance path.

In this case, since a conveyance path is a linear conveyance path, a part can be conveyed by applying a vibration to a linear conveyance path.

)와, 베이스부에 장착되어 가진부로부터 베이스부에 전달되어 진동을 감쇠시키는 방진부재를 더 구비하고, 구동부재는, 가진부와, 가진부보다 아랫쪽의 가장 하부에 배설된 베이스부 보다 윗쪽에 설치된 추부에 장착되어 탄성변형 함 으로써 추부와 가진부에 서로 역 위상의 진동을 발생시켜도 좋다.(5) The component supply apparatus according to the present invention includes a base part and an excitation part (

And an anti-vibration member which is mounted on the base part and is transmitted from the excitation part to the base part to damp vibrations, and the driving member is located above the excitation part and the base part disposed at the lowermost part below the excitation part It may be mounted on an installed weight and elastically deformed to generate vibrations of opposite phases to each other.

In this case, the lower part is provided in the order of the base part, the weight part, and the excitation part, and the dustproof member is mounted on the vibration part and the base part, and the driving member is mounted on the vibration part and the weight part.

As a result, since the driving member and the dustproof member are disposed in duplicate in the excitation portion and the weight portion, the bending modes of the driving member and the dustproof member are in the same phase, and the dustproof efficiency can be improved.

In addition, since the length of the long direction of the drive member overlaps with a part of the long direction of the dustproof member in the state where the conventional drive member and the dustproof member are arranged in a straight line with each other, the lowering of the component supply device itself is reduced. It is possible to reduce the distance between the center position of the mass on the member and the point of the dustproof member.

As a result, instability of the conveyed parts, inclination conveyance, retention, or drive instability of the parts supply apparatus and left and right shake can be prevented.

(6) The drive member and the dustproof member may be disposed so as to have a portion where the heights overlap each other in the height direction in the vertical direction.

In this case, since the driving member and the dustproof member have portions overlapping with each other in the height direction in the vertical direction, the component supply apparatus can be reduced in size, thereby reducing the distance between the center position of the mass on the member and the point of the dustproof member. There is a number. As a result, instability of the conveyed parts, inclination conveyance, retention, or instability and drive of the parts supply apparatus can be prevented.

(7) The drive member and the dustproof member may be disposed in a stacked state with each other.

In this case, since the dustproof member and the drive member which consist of plate-shaped elastic plates are arrange | positioned mutually in the state laminated | stacked on each other, the bending modes of a drive member and a dustproof member mutually become in phase, and it can improve dustproofing efficiency.

(8) The driving member and the dustproof member are each formed of a flat plate-shaped elastic plate having holes, and the dustproof member and the driving member are fixed through the holes of the dustproof member and the holes of the driving member by the same shaft member with respect to the excitation portion. It may be.

)에 고정된다. 따라서, 종래의 구동부재 및 방진부재가 서로 직선 모양으로 배치된 상태에 대해서, 구동부재의 긴 방향의 길이가 방진부재의 긴 방향의 일부와 중복되어 설치되므로 부품 공급장치 자체의 저배화가 가능해져서 부재 위의 질량의 중심 위치와 방진부재의 지점과의 거리를 줄일 수가 있다. 더욱이 볼트 등의 고정 부재의 부품 수를 저감할 수가 있으므로 부품 자체의 코스트 및 제조시에 있어서의 코스트의 저감을 도모할 수가 있다.In this case, the driving member and the dustproof member penetrate the hole by a coaxial member, for example, a bolt or the like (

It is fixed to). Therefore, in the state where the conventional driving member and the dustproof member are arranged in a straight line with each other, the length of the long direction of the driving member is installed overlapping with a part of the long direction of the dustproof member, thereby making it possible to reduce the component supply device itself. The distance between the center position of the mass on the member and the point of the dustproof member can be reduced. Furthermore, since the number of parts of fixing members such as bolts can be reduced, the cost of the parts themselves and the cost at the time of manufacture can be reduced.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment which concerns on this invention is described with reference to drawings. As an example of the component supply apparatus which concerns on this invention, the case where it is made to fit the micro component supply apparatus which conveys a micro component is demonstrated.

(One embodiment)

1 and 2 are schematic diagrams showing an example of a micro component supply device 100 according to an embodiment of the present invention. 1 shows the surface of the micro component supply apparatus 100, and FIG. 2 shows the side of the micro component supply apparatus 100.

As shown in FIG. 1 and FIG. 2, the micro component supply apparatus 100 includes a part feeder 200, a linear feeder 300, and a stage 900. In addition, as shown in FIG. 2, the part feeder 200 includes a bowl-shaped conveying unit 210 and a piezoelectric vibrating unit 220.

In the micro component supply apparatus 100 in this embodiment, the part feeder 200 and the linear feeder 300 are provided on the stage 900. The micro component loading part 311 of the linear feeder 300 is connected to the micro component discharge part 211 of the part feeder 200. Furthermore, the acceptor passage 217 of the part feeder 200 is connected to the micro part reflux transport path 317 of the linear feeder 300.

)에 따라 나선 모양의 미소 부품 반송로가 설치된다.A bowl-shaped conveying part in which vibrations oscillated by the diaphragm 400 (not shown) installed in the piezoelectric vibrator 220 of the part feeder 200 is placed on the piezoelectric vibrator 220. 210). Inner circumference of the bowl-shaped conveying unit 210 (

The spiral part conveyance path is provided.

The micro component 800 is supplied to the center bottom of the bowl-shaped conveying unit 210, and the micro component 800 is conveyed onto the spiral conveying path by the vibration from the piezoelectric vibrating unit 220. It is conveyed from the micro component discharge part 211 to the micro component loading part 311 of the linear feeder 300.

In addition, the linear feeder 300 is provided with one exciter mainly composed of the piezoelectric vibrator 303, the diaphragm 400, and the weight 302 (counter weight), and the oscillation oscillated by the exciter is a linear feeder. It is applied to each conveyance path of 300. Therefore, the micro component supply apparatus 100 can supply the micro component 800 to the next process of the micro component supply apparatus 100. FIG.

In addition, when there are micro components 800 which are not arranged in a predetermined posture in the conveyance path of the linear feeder 300, or when a problem occurs in the next process and the micro parts 800 cannot be conveyed to the next process side. The micro part 800 is returned from the micro part reflux transport path 317 to the center bottom of the bowl-shaped transfer part 210 via the acceptance path 217 of the part feeder 200.

Next, FIG. 3 is a schematic perspective view which shows an example of the shape of the micro component 800 conveyed in this embodiment.

As shown in FIG. 3, the micro component 800 consists of a rectangular parallelepiped which has length L, height H, and width B. As shown in FIG. The relationship between the length L, the height H, and the width B has a relationship of H <B <L. As such, the micro component 800 is formed of a micro component having a flat plate shape.

In addition, in the micro component supply apparatus 100, electrodes are formed on one surface of the micro component 800, and in general, the size of the micro component 800 is about 3.2 mm to 8 mm in length (L). The width B is about 2.5 mm to 5.0 mm, and the height H is about 0.8 mm to 1.7 mm.

Next, FIG. 4 is a schematic side view which cut | disconnected a part of linear feeder 300 which concerns on 1st Embodiment.

The linear feeder 300 mainly comprises a dustproof table (base portion: 301), a weight portion (counter weight: 302), a piezoelectric vibrating portion 303, a first conveying member (linear conveying member: 320), a second conveying member (Linear conveying member: 330), connecting member 340 and the third conveying member (reflux conveying member: 350), connecting plate 370, support spring 380, anti-vibration plate spring 390 and vibration plate ( 400).

As shown in FIG. 4, the weight part (counter weight 302) is provided above the dustproof stand 301, and the piezoelectric vibrating part 303 is provided above the weight part. The weight portion is formed of a weight formed according to the weight of the piezoelectric vibrator 303 and the first conveying member 320.

As shown in FIG. 4, the piezoelectric vibrating part 303 is hold | maintained by the some antivibration leaf spring 390 from the side surface of the vibration stand 301. As shown in FIG. In addition, the piezoelectric vibrator 303 is held by the plurality of support springs 380 from the side of the weight (counter weight 302).

In addition, with respect to the linear feeder 300 in this embodiment, the support spring 380 and the antivibration leaf spring 390 are arrange | positioned overlapping with respect to a perpendicular direction, Furthermore, the support spring 380 and the antivibration leaf spring 390 is provided in an inclined state at approximately the same angle in the vertical direction.

In addition, the diaphragm 400 is installed inside the weight portion 302 and the piezoelectric vibrating portion 303 of FIG. 4. The diaphragm 400 includes a flat elastic member 420 forming a vertical plate portion, a flat elastic member 421 forming a horizontal plate portion, a flat elastic member 420 and a flat elastic member. It consists of a coupling member 422 and a piezoelectric element 411 for coupling 421.

The flat elastic member 420 is mounted to the piezoelectric vibrator 303, and the flat elastic member 421 is mounted to the weight 302. The detailed structure of the diaphragm 400 will be described later.

The first conveying member 320 is fixed to the upper portion of the piezoelectric vibrating part 303, the second conveying member 330 is connected to one end of the first conveying member 320, and the first conveying member 320 is provided. Side of the connection member 340 is provided in parallel. In addition, the third conveying member 350 is installed in the first conveying member 320 via a plurality of elastic plate-like members 360. That is, one end of the plurality of elastic plate-like members 360 having a flat plate shape is fixed to the first conveying member 320 by bolts, and the other end is fixed to the back surface of the third conveying member 350 by bolts.

In this state, the plurality of elastic plate-like members 360 are obliquely installed at an angle closer to the horizontal plane than the vertical plane.

As described above, in the present embodiment, the linear feeder 300 is subjected to vibration excitation by the diaphragm 400 to which the piezoelectric element 411 is described later. The vibrating portion 303 and the weight portion 302 vibrate in the reverse phase, and the vibration in the piezoelectric vibrating portion 303 is transmitted to the first conveying member 320 and on the first conveying member 320. The micro component 800 is conveyed to a conveyance path.

Next, FIG. 5 is a schematic assembly diagram showing an example of the diaphragm 400 of FIG. 4, and FIG. 6 is a schematic side view of the diaphragm 400 of FIG. 5.

First, as shown in FIG. 5, the piezoelectric element 411 is arrange | positioned in the center part of the front and back surface of the flat elastic member 420. As shown in FIG. The spring constant composed of the flat plate-shaped elastic member 420 and the piezoelectric element 411 is formed at an arbitrary resonant frequency determined by the weight and size of the micro component 800 to be conveyed and the weight of the first conveying member 320. It is appropriately selected according to the conditions.

Specifically, for the diaphragm 400, piezoelectric ceramics are polarized to attach a piezoelectric element 411 having a polarization potential of positive polarity to one surface (surface) of the flat elastic member 420, and flat elastic By attaching a piezoelectric element 411 having a polarization potential of negative polarity to one surface (rear surface) of the member 420, a plurality of piezoelectric elements 411 are formed on the front and rear surfaces of the flat elastic member 420. The structure of the bimorph type piezoelectric element is formed.

Then, by applying (applying) electric charges to the plurality of piezoelectric elements 411, vibration is excited on the diaphragm 400, and the weight portion 302 is transferred to the piezoelectric vibrating portion 303 held by the support spring 380. They vibrate in opposite directions.

Next, as shown in FIG. 5, in the diaphragm 400, the flat plate-shaped elastic member 420 to which the piezoelectric element 411 is stuck is provided as a vertical plate part, and the flat plate-shaped elastic member 421 is a horizontal plate. It is installed as a part.

In addition, the coupling member 422 of the diaphragm 400 included in the vertical plate portion is formed in the shape of a substantially rectangular pillar having a long direction. The coupling member 422 has two adjacent surfaces 423 and 424 having one side in a long direction, and the coupling member 422 is provided such that the angle formed by these two surfaces is 90 degrees. In addition, these two surfaces 423 and 424 are provided with holes (not shown) to enable screwing.

The piezoelectric element 411 is attached to the flat elastic member 420 at almost the center of the front and rear surfaces, and through holes 430 and 440 are provided at the portion where the piezoelectric element 411 is not attached. The through-holes 431 and 450 are installed in the flat elastic member 421.

The bolt A is fastened to the hole provided in the surface 423 of the coupling member 422 through the through hole 430 provided in the lower portion of the flat elastic member 420, the bolt B is a flat elastic member 421 It is fastened to a hole installed in the surface 424 of the coupling member 422 through the through hole 431 of the).

As described above, the plate-shaped elastic member 420 and the plate-shaped elastic member 421 are fixed to the coupling member 422 by bolts A and B at an angle of about 90 degrees, so that the diaphragm having a substantially L shape as shown in FIG. 400) is formed.

Subsequently, as shown in FIGS. 4 and 6, the flat elastic member 421 of the diaphragm 400 is fastened to the weight 302 by bolt C, and the flat elastic member 420 of the diaphragm 400 is The piezoelectric vibrator 303 is mounted. Therefore, the diaphragm 400 is embedded in the linear feeder 300.

In the present embodiment, the plate-shaped elastic member 420 has a stiffness Nm1 at a thickness L1, and the plate-shaped elastic member 421 has a stiffness Nm2 at a thickness L2. In this way, since the flat elastic members 420 and 421 are formed from separate members, the thickness and the rigidity can be freely selected without depending on the members.

As described above, in the component supply apparatus according to the present embodiment, the plate-shaped elastic member 421 of the horizontal plate portion of the diaphragm 400 and the plate-shaped elastic member 420 of the vertical plate portion have a mutual thickness. Since different, the rigidity Nm1 and Nm2 of the flat elastic member 421 of the horizontal plate part of the diaphragm 400, and the flat elastic member 420 of the vertical plate part can be made into a different value.

Moreover, the thickness can be thickened at least in the junction part of the horizontal board part and the vertical board part of the diaphragm 400. FIG. Therefore, the component supply apparatus 100 including the diaphragm 400 having the optimum rigidity and the optimal vibration frequency by increasing the thickness of the portion such as the joint portion requiring rigidity or by reducing the thickness of the portion to be reduced in rigidity. ) Can be realized.

In particular, since the first flat plate-like elastic member 420 and the second flat plate-shaped elastic member 421 are coupled by the coupling member 422, the single flat plate-shaped elastic member is bent and the horizontal plate portion and Compared with the case where a vertical plate part is formed, a right angle precision can be improved significantly.

As a result, since the difference in the installation position at the time of installing the diaphragm 400 in the weight part 302 and the piezoelectric vibrating part 303 can be prevented, manufacturing process number and maintenance process number can be reduced.

In addition, since the load of the first conveying member 320 and the piezoelectric vibrator 303 can be supported by the support spring 380, the durability of the diaphragm 400 and the piezoelectric element 411 can be improved. The vibration can be appropriately excited from the diaphragm 400 to which the piezoelectric element 411 is attached.

Further, the thickness of the first flat elastic member 420 and the thickness of the second flat elastic member 421 can be freely adjusted. As a result, the rigidity between the horizontal plane and the vertical plane of the diaphragm can be made different.

In addition, since the stiffness of the joining member 422 that can enter between these members is added, by increasing the thickness of the surface required for rigidity, or by reducing the thickness of the portion to be reduced in rigidity, the optimum rigidity and optimal vibration A component supply apparatus including a diaphragm having a frequency can be realized.

Next, FIG. 7 is a schematic side view for demonstrating an example of the low magnification of the linear feeder 300 which concerns on this embodiment shown in FIG. The linear feeder 300 shown in FIG. 7 is the same as the linear feeder of FIG.

Next, the structures of the support spring 380 and the anti-vibration leaf spring 390 will be described.

As shown in FIG. 7, the support spring 380 and the vibration damper leaf spring 390 are overlapped with the linear feeder 300 in this embodiment.

Next, FIG. 8 is a schematic diagram which shows an example of the structure of the support spring 380 and the vibration damping leaf spring 390. As shown in FIG. As shown in Fig. 8, the support spring 380 and the vibration damping leaf spring 390 are each made of an elastic member having a flat plate shape.

Between the support spring 380 and the anti-vibration leaf spring 390, a plate-shaped spacer 391 and two ring spacers 392 are provided.

As shown in FIG. 8, two through-holes 380a are provided in one end of the support spring 380, and two through-holes 380b are provided in the other end. In addition, two through-holes 390a are provided at one end of the vibration-proof leaf spring 390, two through-holes 390b are provided near the center portion, and two through-holes 390c are provided at the other end. .

The bolt 385 is provided with a spring washer and a plain washer, and moreover, the through hole 380a of the support spring 380, the through hole 391a of the plate-shaped spacer 391, and dustproofing. The through plate 390a of the plate spring 390 is fixed to the piezoelectric vibrating unit 303.

In addition, the bolt 386 is provided with a spring washer and a flat seat and further includes a through hole 380b of the support spring 380, a ring-shaped spacer 392 and a through hole 390b of the anti-vibration leaf spring 390. It penetrates and is fixed to the weight 302.

Furthermore, the bolt 395 has a spring washer and a flat seat, and is further fixed to the base portion 301 through the through hole 390c.

FIG. 9: is a schematic cross section for demonstrating the structure of the support spring 380 and the vibration damper leaf spring 390 shown in FIG.

As shown in Figs. 8 and 9, the diameter of the through hole 390b of the antivibration leaf spring 390 is larger than the other through holes 380a, 380b, 390a and 390c. That is, the diameter of the through hole 390b of the antivibration leaf spring 390 is larger than the head of the bolt 386. Therefore, the vibration of the piezoelectric vibrating portion 303 can be transmitted to the weight portion 302 side without the support spring 380 being interfered with the movement of the antivibration leaf spring 390.

Next, the effect of the linear feeder 300 in embodiment of this invention is demonstrated.

10 and 11 illustrate the effect of the linear feeder 300. FIG. 10 (a) shows the structure of the support spring 380 of the linear feeder 300 and the antivibration leaf spring 390. FIG. 10 (b) shows the support spring 980 of the conventional linear feeder (see FIG. 18). And a vibration damping leaf spring 990 is shown.

11 (a) shows the initial state (notation Z) and the maximum amplitude state (without reference numeral) of the support spring 380 and the anti-vibration leaf spring 390 according to the present invention, and FIG. ) Denotes the initial state (attached sign Z) and the maximum amplitude state (without reference sign) of the conventional support spring 980 and the anti-vibration leaf spring 990.

The support spring 380 and the vibration damper leaf spring 390 shown in FIG. 10A deform in the same mode when the linear feeder 300 is driven. On the other hand, the support spring 980 and the vibration damper leaf spring 990 shown in FIG. 10 (b) deform into different modes (X1 and X2 in the figure) when the linear feeder is driven. Hereinafter, the mode will be described.

Here, as shown in Fig. 11 (a), the support spring 380Z and the anti-vibration leaf spring 390Z in the initial state are installed in a state where they overlap each other, and the ends of the support spring 380Z and the anti-vibration leaf spring 390Z. The distance to the end of the c) is the distance L1.

Further, the support spring 380 and the antivibration leaf spring 390 coincide with each other (mode) for the maximum amplitude state, and the distance L2 between the end of the support spring 380 and the end of the antivibration leaf spring 390. Is almost equal to the distance L1, and represents a value in which the rate of change L2 / L1 of the distance is close to 1 infinity.

On the other hand, as shown in Figs. 10 (b) and 11 (b), the support spring 980Z and the vibration damping leaf spring 990Z in the initial state are arranged in a straight line and the distance between each other is the distance L3. Further, in the maximum amplitude state, the support spring 980 and the antivibration leaf spring 990 move in reverse with each other (mode), and the distance becomes the distance L4. This distance L3 and the distance L4 show a value where the rate of change is close to 6, for example in FIG. 11 (b) where the rate of change L4 / L3 of the distance is greater than 1 in relation to the distance L3 <distance L4.

As described above, the conventional support spring 980 and the vibration damping leaf spring 990 shown in Figs. 10 (b) and 11 (b) are spaced apart from each other from the distance L3 state to the distance L4 when they vibrate. At the same time, they are attracted to each other and cause confusion in vibration.

As a result, the support spring 980 and the anti-vibration leaf spring 990 do not coincide with each other (movement) and are moved respectively, so that the anti-vibration effect by the anti-vibration leaf spring 990 cannot be exhibited.

On the other hand, the support spring 380 and the vibration damper leaf spring 390 shown in FIG. Since the shift to the distance L2 which is almost equal to the distance L1, the vibration does not occur in the support spring 380 and the antivibration leaf spring 390.

As a result, the support spring 380 and the antivibration leaf spring 390 coincide with the movement (mode), and the antivibration effect is easily exhibited by the antivibration leaf spring 390.

As mentioned above, it turns out that the linear feeder 300 which concerns on this embodiment improves dustproofing efficiency compared with the linear feeder which has a structure of FIG. 10 (b).

In addition, as shown in FIG. 10 (a), since the support spring 380 is disposed to overlap with a part of the long direction of the antivibration leaf spring 390, the length in the vertical direction can be reduced. Therefore, the lower the overall height H1 of the linear feeder 300, Fig. 7, as compared to the height H ₁₀ of the linear feeder 18 shown in Fig.

Moreover, compared with the height H20 of the point of the support spring 980 of FIG. 18, the height H2 of the point of the support spring 380 of FIG. 7 becomes low.

Furthermore, compared with the distance L30 + H20 which added the height H20 of the point of the support spring 980 of FIG. 18 to the center W of the mass on the support spring 980, the point of the support spring 380 shown in FIG. The distance L3 + H2 is also shortened by adding the distance to the center W of the mass supported by the support spring 380 to the height H2 of .

As described above, in the linear feeder 300 according to the present invention, it is possible to prevent the instability and tilt conveyance of the conveyed parts, the instability of the linear feeder 300, or the driving instability of the linear feeder 300, the shaking of the left and right, and the like. There is a number.

(Another example)

Next, FIG. 12 is a side view showing another example of the diaphragm 400 of FIGS. 5 and 6. The diaphragm 400a shown in FIG. 12 differs from the diaphragm 400 shown in FIG. 5 and FIG. 6 in the following points.

Unlike the diaphragm 400 of FIGS. 5 and 6, the diaphragm 400a illustrated in FIG. 12 includes a flat plate-like elastic member 420a and a piezoelectric element 411. The flat elastic member 420a shown in FIG. 12 cuts the thickness of a some area from thickness L1 to thickness L2, and consists of a flat elastic member which has a different thickness.

The flat elastic member 420a having this different thickness is formed by bending about 90 degrees at the position of thickness L1. With respect to the flat elastic member 420a shown in FIG. 12, an area of thickness L1 is provided as a vertical plate portion, and an area of thickness L2 is provided as a horizontal plate portion.

In addition, the piezoelectric element 411 is adhered to the front and back of the vertical surface of the flat elastic member 420a. As the electrical signal is applied to the piezoelectric element 411, stress is generated in the flat elastic member 420a.

Here, in this embodiment, the flat plate-shaped elastic member 420a is bent by 90 degrees in the region of high rigidity thickness L1 to increase the rigidity of the bent portion and to excite the stable vibration to the diaphragm 400a.

In this case, the stiffness and thickness of the horizontal plate portion and the vertical plate portion of the diaphragm 400a can be set to different values by processing or laminating members. Accordingly, the component supply apparatus 100 including the diaphragm 400a having the optimum rigidity and the optimum vibration frequency can be realized by increasing the thickness of the surface on which rigidity is required or by reducing the thickness of the portion to be reduced in rigidity. There is a number.

(Another example)

13 is a side view illustrating still another example of the diaphragm 400 of FIG. 5 and the diaphragm 400a of FIG. 12.

The diaphragm 400b shown in FIG. 13 differs from the diaphragm 400, 400a shown in FIG. 5, FIG. 6, and FIG. 12 as follows.

The diaphragm 400b shown in FIG. 13 consists of a flat elastic member 420b, a flat elastic member 421b, a piezoelectric element 411, and a bolt D. As shown in FIG.

The flat elastic member 420b is made of thickness L1, and the flat elastic member 421b is made of thickness L2. In addition, in this embodiment, although the thickness of the flat elastic members 420b and 421b differed, it is not limited to this, You may form as what consists of the same thickness.

The flat elastic member 420b is formed by bending the tip of the member about 90 degrees. In addition, the plate-shaped elastic member 421b is installed along the distal end surface of the curved plate-shaped elastic member 420b such that the plate-shaped elastic member 420b extends in the reverse direction of the plate-shaped elastic member 420b by 180 degrees. .

And as shown in FIG. 13, the front end surface of this curved flat elastic member 420b and the cross section of the flat elastic member 421b are fastened by the bolt D. As shown in FIG.

Thus, in the diaphragm 400b of FIG. 13, the vertical plate part of thickness L1 is formed, the horizontal plate part of thickness L2 is formed, and the joining part of the vertical plate part of thickness L1 + L2 and the horizontal plate part is formed. As a result, a vibrator having high rigidity can be formed in the engaging portion. Moreover, this coupling portion is included in the horizontal plate portion.

In addition, the piezoelectric element 411 is adhered to the front and rear surfaces of the flat elastic member 420b. As the electrical signal is applied to the piezoelectric element 411, stress is generated in the flat elastic member 420b.

Here, in the present embodiment, the rigidity of the bent portion can be increased by bending 90 degrees with respect to the plate-shaped elastic members 420b and 421b having a high rigidity thickness L1 + L2, thereby exciting a stable vibration with respect to the diaphragm 400b. There is a number.

In this case, by stacking members, the rigidity and thickness of the horizontal plate portion and the vertical plate portion of the diaphragm 400b can be set to different values. As such, the component supply apparatus 100 including the diaphragm 400b having the optimum rigidity and the optimal vibration frequency can be realized by increasing the thickness of the surface on which rigidity is required or by reducing the thickness of the portion to be reduced in rigidity. have.

(Another example)

Next, FIG. 14 is a schematic side view which shows the other example of the linear feeder 300 of FIG.

The difference between the linear feeder 300a shown in FIG. 14 and the linear feeder 300 shown in FIG. 7 is as follows.

As shown in FIG. 14, in the linear feeder 300a, the antivibration leaf spring 390 is provided in the arrangement place of the support spring 380 of FIG. 7, and the arrangement place of the antivibration leaf spring 390 of FIG. A support spring 380 is installed.

That is, the anti-vibration leaf spring 390 is installed between the support spring 380 and the piezoelectric drive part 302 so that the support spring 380 is provided outside the antivibration leaf spring 390 and the linear feeder 300. . Hereinafter, the arrangement will be described in detail.

FIG. 15: is a schematic diagram which shows an example of the structure of the support spring 380 and the antivibration leaf spring 390 of FIG.

As shown in Fig. 15, the support spring 380 and the antivibration leaf spring 390 are each made of an elastic member having a flat plate shape. A flat spacer 391 is installed between the support spring 380 and the antivibration leaf spring 390.

As shown in FIG. 15, two through-holes 380a are provided in the one end side of the support spring 380, and two through-holes 380b are provided in the other end side. In addition, two through-holes 390a are provided at one end side of the anti-vibration leaf spring 390, two through-holes 390d are provided near the center portion, and two through-holes 390c are provided at the other end side. It is. Here, the through hole 390d has a larger diameter than the head of the bolt 386a.

The bolt 385 includes a spring washer and a plain washer, and furthermore, the through hole 390a of the antivibration leaf spring 390 and the through hole of a flat spacer 391. It penetrates the through hole 380a of the 391a and the support spring 380, and is fixed to the piezoelectric vibrating part 303. As shown in FIG.

In addition, the bolt 386a is provided with a spring washer and a flat seat, and is further fixed to the weight 302 via the through hole 380b of the support spring 380.

In addition, the bolt 395a includes a spring washer and a flat seat, and is further fixed to the base portion 301 through the through hole 390c.

FIG. 16: is a schematic diagram which shows an example of the structure of the support spring 380 and the antivibration leaf spring 390 of FIG.

As shown in FIG. 15 and FIG. 16, the diameter of the through hole 390d of the antivibration leaf spring 390 is larger than the other through holes 380a, 380b, 390a, and 390c. Therefore, the vibration of the weight portion 302 can be transmitted to the piezoelectric vibrating portion 303 side without the support spring 380 interfering with the movement of the antivibration leaf spring 390.

As described above, in the linear feeder 300a according to the present invention, the instability of the conveying part, the tilt conveyance, the staying, or the driving instability of the linear feeder 300a and the lateral shaking can be prevented, and the stable part can be conveyed.

Next, FIG. 17 is a schematic side view showing another example of the linear feeders 300 and 300a.

The linear feeder 300b shown in FIG. 17 is provided with the vibration damping leaf spring 390 in the surface different from the surface in which the support spring 380 is provided. Convex portions are formed in each of the base portion 301 and the piezoelectric vibrating portion 303, and the antivibration leaf spring 390 is formed in the convex portion formed of the piezoelectric vibrating portion 303 and the base portion 301 by bolts. Attach and fix.

In this case, the vibration modes of the support spring 380 and the anti-vibration leaf spring 390 can be matched to prevent instability of the conveyed parts, tilt conveyance, retention, or driving instability and linear shaking of the linear feeder 300b. Since it can be carried out, the stable conveyance of components can be performed.

As for the component feeder according to the present invention, the linear feeders 300, 300a, and 300b correspond to the component feeder, the base portion 301 corresponds to the base portion, and the weight portion (counter weight: 302) corresponds to the weight portion. , The piezoelectric vibrating portion 303 corresponds to the excitation portion, the vibration-proof leaf spring 390 corresponds to the dustproof member, the support spring 380 corresponds to the drive member, the bolt 385 is on the same shaft member The piezoelectric element 411 corresponds to the vibrator, the diaphragms 400, 400a and 400b correspond to the diaphragm, the coupling member 422 corresponds to the coupling member, and the plate-shaped elastic members 420 and 420a, 420b corresponds to the first flat elastic member, the flat elastic members 421 and 421b correspond to the second flat elastic member, and thicknesses L1, L2, and (L1 + L2) correspond to the thickness. The first conveying member 320, the second conveying member 330, and the third conveying member 350 correspond to the conveying part, The part 800 corresponds to a part.

Although this invention is described by said one preferable embodiment, it is not limited only to this. Various other embodiments may be made without departing from the object and scope of the present invention.

Moreover, although the action and effect by the structure of this invention were described about this embodiment, such action and effect are also only an example and do not limit this invention.

The present invention can improve the durability and at the same time have a diaphragm capable of freely selecting the rigidity to excite the vibration appropriately, and also improve the dustproof efficiency, and at the same time increase the height of the center of the mass on the spring It is possible to realize a low conveyance of stable parts and a reduction of the component supply device itself. Furthermore, the cost can be reduced by reducing the number of parts of the fixing member.

Claims (8)

In the component supply apparatus which conveys by giving a vibration to a component, A conveying unit having a conveying path for conveying the parts; An excitation part for supporting the conveyance part; A weight portion provided as a member separate from the excitation portion; A driving member having one end mounted on the excitation portion and the other end mounted on the weight portion and capable of elastic deformation; A vibrator generating stress by an electrical signal, A horizontal plate portion arranged horizontally and a vertical plate portion arranged vertically, wherein at least one surface of the front and back surfaces of the vertical plate portion The vibrator is attached, and includes a diaphragm that excites vibration, In the diaphragm, either one of the horizontal plate portion and the vertical plate portion is attached to the weight portion, and the other of the horizontal plate portion and the vertical plate portion is attached to the excitation portion, and the horizontal plate portion and the soft edge A direct plate portion is joined at a joining portion , wherein the thickness of one of the horizontal plate portion and the vertical plate portion is thicker than at least the other. The method of claim 1, The diaphragm may include a first flat plate-shaped elastic member forming the horizontal plate portion; A second flat plate-shaped elastic member different from the first flat plate-shaped elastic member forming the vertical plate portion; And a coupling member for coupling the horizontal plate portion formed by the first flat elastic member and the vertical plate portion formed by the second flat elastic member. The method of claim 1, The diaphragm has a long direction in an elongate shape, and is made of a flat plate-like elastic member having a portion thicker than another region in a portion of the region along the longitudinal direction. And the vertical plate portion and the horizontal plate portion are formed by bending the thick portion of the flat elastic member. 4. The method according to any one of claims 1 to 3, The conveying path is a component supply apparatus, characterized in that the linear conveying path. The method of claim 1, And a dustproof member mounted on the vibrating part and the base part to attenuate vibration transmitted from the vibrating part to the base part. Electric drive member is mounted to the weight portion provided on the upper than the part with the above, the base portion provided on a more downward than the portion having the elastic deformation also occurs the vibration of the opposite phases to each other in part above with the weight portion as a Component supply apparatus characterized in that. 6. The method of claim 5, The drive member and the dustproof member are arranged so as to have a portion where the heights overlap each other in the vertical direction. The method of claim 6, And said drive member and said dustproof member are arranged in a stacked state with each other. The method according to any one of claims 5 to 7, The driving member and the dustproof member are each formed of a flat plate-like elastic plate having holes, And the dustproof member and the drive member are fixed through the hole of the dustproof member and the hole of the drive member by the same shaft member with respect to the excitation portion.

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