JP2007297168A - Parts feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a parts feeder capable of stably conveying parts, while easily obtaining a desirable amplitude. <P>SOLUTION: In this linear parts feeder 300, a weight part 302 and a piezoelectric vibration part 303 provided over a base part 301 give vibration to a first and a second conveying passages 310 and 320 through a plurality of driving plate springs 390 and a plurality of vibration preventing plates springs 380 so as to convey fine parts 800 on the first and the second conveying passages 310 and 320. A horizontal vibration transmitting member 360b fixed to a projection part 375 of a fixed plate 370 gives horizontal vibration to a third conveying member 350 for circulating the fine parts 800 transferred by the first and the second conveying passages 310 and 320, and a component force elastic plate member 360a gives horizontal vibration and vertical vibration to the third conveying member 350. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a component supply apparatus capable of transferring components by vibration.

  2. Description of the Related Art Conventionally, a parts feeder or the like (part transporting apparatus) is well known as one of parts supplying apparatuses that align parts by supplying vibration to the parts and supply the parts. This parts feeder can adjust the posture of the part by applying vibration to the part and supply it to the next process.

  Patent Document 1 discloses a vibratory component transport device that can reduce the number of vibration mechanisms installed in the vibration component transport device and can increase the degree of freedom in setting the transport speed and transport direction of the component. Yes.

In the vibration type component conveying apparatus described in Patent Document 1, the vibrating body provided with the conveying path is directed to the upper vibrating body of the linear feeder in a direction parallel to the vibration direction of the upper vibrating body in a horizontal plane. Supporting with two leaf springs arranged at equal inclination angles in the vertical plane, providing its own excitation mechanism using the vibration propagated from the upper vibrator through the leaf spring In addition, the degree of freedom in setting the conveyance speed and conveyance direction of the parts is given, and the parts can be conveyed along the conveyance path provided in the vibrating body.
JP 2005-35790 A

  However, in the vibratory component conveying device described in Patent Document 1, when a pitching phenomenon that swings in the front-rear direction occurs in the conveying path that conveys from upstream to downstream, the transfer of the object to be conveyed becomes unstable. There is. In addition, since the vibration transmission path of the conveyance path and the conveyance path to be recirculated overlap except for the leaf spring, the amplitude of the conveyance path to be conveyed from the upstream to the downstream and the amplitude of the conveyance path to be recirculated influence each other, and the vibration frequency / Vibration easily changes depending on spring strength, trough weight, weight balance, etc., and it is difficult to obtain an arbitrary amplitude individually.

  An object of the present invention is to provide a component supply device that can easily obtain an arbitrary amplitude in a plurality of conveyance paths and can realize stable component conveyance.

Means and effects for solving the problems

(1)
A component supply device according to the present invention is a component supply device including a linear conveyance path that linearly transfers a component supplied into a conveyance path by generating vibration in the conveyance path, and is disposed in a lower part. A base part, a vibration part that is arranged above the base part and generates vibrations, and a fixed part that is provided below the vibration part and above the base part. An anti-vibration member that is attached to the excitation unit and the base unit and attenuates vibration transmitted from the excitation unit to the base unit, and is attached to the excitation unit and the fixed unit, and is elastically deformed to fix the fixed unit and the excitation unit. A drive member that generates vibrations of opposite phases to each other, a reflux conveyance path for returning parts conveyed by the linear conveyance path from the downstream side to the upstream side, and a flat plate shape having a protrusion fixed to the fixed part Fixed plate made of A horizontal vibration member provided horizontally to connect the protrusion, and a horizontal vibration by the horizontal vibration member is inclined at a predetermined angle from the vertical plane to divide the horizontal vibration into a vertical vibration and a horizontal vibration. Provided with a component member, and a support member for supporting the component member.

  In the component supply apparatus according to the present invention, the fixed portion and the vibration portion provided above the base portion impart vibration to the linear conveyance path by the vibration isolation member and the drive member, and convey components on the linear conveyance path. Further, horizontal vibration is transmitted to the reflux conveyance path by a horizontal vibration member connected to a fixed plate fixed to the fixed portion. The horizontal vibration is divided into vertical and horizontal vibrations by the component members. These horizontal vibrations and vertical vibrations are applied to the reflux conveyance path.

  In this case, vibration is transmitted to the linear conveyance path and the reflux conveyance path through separate paths. That is, vibration is transmitted from the driving member to the linear conveyance path, and vibration is transmitted from the fixed portion to the reflux conveyance path. As a result, the vibration of the reflux conveyance path is transmitted by the fixed portion, the fixed plate, and the horizontal vibration transmitting member, and can be independently divided into the vertical vibration and the horizontal vibration by the component force member. Therefore, stable vibration can be generated in each of the linear transport path and the reflux transport path, and the transport target can be transported stably even when the pitching phenomenon occurs. Furthermore, it is possible to easily change the vibration frequency, the spring constant, etc., and to easily obtain an arbitrary amplitude.

(2)
Preferably, the support member extends horizontally with respect to the upstream side and the downstream side of the reflux conveyance path, and the component members are provided at both ends of the support member so as to be inclined at a predetermined angle from the vertical plane.

  In this case, the support member extends horizontally with respect to the upstream side and the downstream side of the reflux conveyance path, and component members are provided at both ends. Further, by providing the component force member with a predetermined angle inclination, the vibration transmitted from the horizontal vibration member is divided into the vertical vibration and the horizontal vibration according to the inclination. Therefore, by adjusting the inclination angle of the component force member, it is possible to adjust the amplitude on the reflux conveyance path side without affecting the linear conveyance path.

(3)
The support member includes two members, extends horizontally with respect to the upstream side and the downstream side of the reflux conveyance path, and corresponds to the positions of one third and two thirds of the total length of the reflux conveyance path. It is preferable that one component force member is provided at a position of the support member so as to be inclined at a predetermined angle from the vertical plane.

  In the case of using these two component members, the point corresponding to the primary mode of the reflux conveyance path is a 1/3 portion and a 2/3 portion of the total length of the reflux conveyance path. It is preferable to carry out the support. Accordingly, since one component member can be provided in each of the 1/3 portion and 2/3 portion of the entire length of the reflux conveyance path, the primary mode vibration can be appropriately applied to the reflux conveyance path. . As a result, the parts can be smoothly transferred in the reflux conveyance path.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As an example of the component supply apparatus according to the present invention, a case where the apparatus is adapted to a minute component supply apparatus that conveys a minute component will be described.

(One embodiment)
1 and 2 are schematic perspective views showing an example of a micropart supply device 100 according to an embodiment of the present invention. FIG. 1 shows an upper surface of the microcomponent supply apparatus 100, and FIG.

  As shown in FIGS. 1 and 2, the micropart supply device 100 includes a parts feeder 200, a linear part feeder 300, and a stage 900.

  Further, as shown in FIG. 2, the parts feeder 200 includes a bowl-shaped transport unit 210 and a piezoelectric vibration unit 220.

  In micropart supply device 100 in the present embodiment, parts feeder 200 and linear part feeder 300 are provided on stage 900. To the minute parts discharge unit 211 of the parts feeder 200, the minute parts carry-in part 311 of the linear type parts feeder 300 is connected. Further, a receiving path 217 of the parts feeder 200 is connected to the reflux conveyance path 317 of the linear type parts feeder 300.

  The vibration oscillated by the piezoelectric vibration unit 220 of the parts feeder 200 is given to the bowl-shaped transport unit 210 placed on the piezoelectric vibration unit 220. In the bowl-shaped transport unit 210, a spiral minute component transport path is provided along the inner periphery of the bowl-shaped transport unit 210. The micro component 800 (see FIG. 3) is supplied to the center bottom of the bowl-shaped transport unit 210, and the micro component 800 is transported on the spiral transport path by the vibration from the piezoelectric vibration unit 220, and linear from the micro component discharge unit 211. It is given to the micro-component carry-in part 311 of the mold part feeder 300.

  In addition, the linear part feeder 300 is provided with a single vibrator mainly composed of a first conveying member 320, a piezoelectric vibration part 303 and a weight part 302, as will be described later (see FIG. 4). The vibration oscillated by the vibrator is applied to each conveyance path of the linear part feeder 300. Thereby, the micro component supply device 100 can supply the micro component 800 to the next process of the micro component supply device 100.

  Further, when there is a minute part 800 that is not arranged in a predetermined posture in the first conveying member 320 of the linear type part feeder 300, or a trouble occurs in the next process so that the minute part 800 is not conveyed to the next process side. In this case, the micro component 800 is returned from the micro component recirculation path 317 to the center bottom of the bowl-shaped transport section 210 through the receiving path 217 of the parts feeder 200 by the third transport member 350 (see FIG. 4). This detailed configuration will be described later.

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

  As shown in FIG. 3, the micro component 800 is a rectangular parallelepiped having a length L, a height H, and a width B. The relationship between the length L, the height H, and the width B has a relationship of H <B <L. As described above, the micro component 800 is a flat micro component.

  Further, the microcomponent supply apparatus 100 often has an electrode formed on one surface of the microcomponent 800. Generally, the microcomponent 800 has a length L of about 0.6 mm to 3.2 mm. The width B is about 0.3 mm to 3.2 mm, and the height H is about 0.1 mm to 3.2 mm.

  Next, FIG. 4 is a schematic side view showing a partial internal structure of the linear part feeder 300 according to the present embodiment, and FIG. 5 is a side view of the linear part feeder 300 of FIG.

  The linear type parts feeder 300 mainly includes a vibration isolator 301, a weight part (counter weight) 302, a piezoelectric vibration part 303, a first conveying member (linear conveying member) 320, and a second conveying member (linear conveying member). 330, a holding member 340, a holding portion 345, a third conveyance member (reflux conveyance member) 350, a component elastic plate member 360a, a horizontal vibration transmission member 360b, and a fixed plate 370.

  As shown in FIG. 4, a weight portion 302 and a piezoelectric vibration portion 303 are sequentially provided on the top of the vibration isolation table 301. A plurality of vibration isolation leaf springs 380 are provided between the vibration isolation table 301 and the piezoelectric vibration portion 303, and a plurality of drive leaf springs 390 are provided between the weight portion 302 and the piezoelectric vibration portion 303. Is provided. The plurality of driving leaf springs 390 and the plurality of vibration isolation leaf springs 380 are provided in a state inclined at the same angle from the vertical plane.

  Also, an L-shaped elastic member 410 having a bent flat plate is provided inside the weight portion 302 and the piezoelectric vibration portion 303 in FIG. One end side of the elastic member 410 is fixed to the piezoelectric vibration portion 303, and the other end side is fixed to the weight portion 302.

  Further, piezoelectric elements 411 are disposed on both surfaces of the elastic member 410. The spring constant composed of the elastic member 410 and the piezoelectric element 411 is appropriately selected according to the condition of an arbitrary resonance frequency determined by the weight and size of the parts to be conveyed, the weight of the third conveying member 350, and the like.

  Specifically, the piezoelectric element 411 is obtained by attaching a piezoelectric ceramic having a positive polarity polarization potential on one surface of the elastic member 410 and applying a negative polarity polarization on the other surface of the elastic member 410. Affix an electric potential. Thereby, the bimorph structure by the piezoelectric element 411 is formed on the front and back surfaces of the elastic member 410. By applying an electric charge to the piezoelectric element 411, vibration is generated, and the piezoelectric vibrating portion 303 and the weight portion 302 vibrate in opposite directions. Note that the weight portion 302 has a mass formed according to the weight of the piezoelectric vibration portion 303, the first transport member 320, and the like.

  As shown in FIG. 4, the first conveying member 320 is fixed to the upper portion of the piezoelectric vibration unit 303, and the second conveying member 330 is connected to one end side (downstream side) of the first conveying member 320. A third transport member 350 is provided on the side surface of the first transport member 320.

  As shown in FIGS. 4 and 5, the linear part feeder 300 is mainly formed by laminating an anti-vibration table 301, a weight part 302, a piezoelectric vibration part 303, and first and second transport members 320 and 330 in this order. It is. Further, as shown in FIG. 5, a fixed plate 370 formed of a plate-like member and having a protrusion 375 is fixed to the weight portion 302.

  In addition, one end side of the horizontal vibration transmission member 360b made of an elastic body is fixed by a bolt B at the protrusion 375 formed on the fixing plate 370 in FIG. 4, and the other end side of the horizontal vibration transmission member 360b is 3 Fixed to a horizontal plane formed on the conveying member 350. That is, the horizontal vibration transmission member 360b is provided in parallel with the horizontal plane. In the present embodiment, the horizontal vibration transmission member 360b is provided in parallel to the horizontal plane. However, the present invention is not limited to this, and the horizontal vibration transmission member is not limited to this. It is preferable to provide 360b at an angle of ± 10 degrees or less from the horizontal plane.

  Thereby, the vibration in the horizontal direction in the weight portion 302 is given to the third transport member 350 via the protrusion portion 375 of the fixed plate 370.

  Next, as shown in FIG. 4, the piezoelectric vibrating portion 303 is provided with a holding member 340 provided with the horizontal direction as the longitudinal direction. The holding member 340 is held by a holding portion 345 fixed to the vibration isolation table 301. That is, the holding member 340 is held without vibration.

  A component elastic plate member 360a is provided at a predetermined angle (α) on the upstream side and the downstream side of the micropart 800 of the holding member 340 formed with a longitudinal shape in the horizontal direction. One end side of the component elastic plate member 360a is fixed to the holding member 340 by the bolt B, and the other end side of the component elastic plate member 360a is fixed to the surface formed on the third transport member 350 by the bolt B. The surface is formed to be inclined at a predetermined angle (α) from the vertical direction.

  In the present embodiment, the positions of both ends of the holding member 340 are arranged so as to correspond to the positions of one third and two thirds with respect to the total length of the third conveying member 350. . Thereby, the vibration of the primary mode can be generated with respect to the third transport member 350, and the transport of the micro component 800 can be facilitated.

  Moreover, in this Embodiment, although arrange | positioning so as to correspond to the position of 1/3 and 2/3, if it is the said vicinity, the effect of this invention can fully be achieved. Moreover, you may arrange | position so that it may respond | correspond to another arbitrary positions according to the fluctuation | variation of vibration mode etc.

  In this case, horizontal vibration is transmitted to the third conveying member 350 by the horizontal vibration transmitting member 360b. And the vibration of the horizontal direction given to the 3rd conveyance member 350 is divided into a vertical direction and a horizontal direction according to the inclination-angle ((alpha)) of the component elastic board member 360a. Accordingly, the micro component 800 on the third transport member 350 is transferred by vertical vibration and horizontal vibration. This transferred state will be described later.

  Subsequently, a conveyance state of the micro component 800 in the third conveyance member 350 of FIGS. 4 and 5 will be described. FIG. 6 is a view showing the movement of the micro component 800 in the third conveying member 350 of the linear part feeder 300 of FIGS. 4 and 5.

  As shown in FIG. 6, the micro components 800 are sequentially conveyed at the positions of the micro components 800 a, 800 b, and 800 c on the third conveyance path 350. Here, the vertical force F360aV generated according to the inclination angle of the component elastic plate member 360a is applied to the microcomponent 800 at the position of the microcomponent 800a.

  Further, a horizontal force F360aH generated according to the inclination angle of the component elastic plate member 360a is applied to the microcomponent 800 at the position of the microcomponent 800a. The micro component 800 at the position of the micro component 800a is transferred to the position of the micro component 800b by applying a resultant force of the forces F360aH and F360aV, that is, the force F800.

  Similarly, a vertical force F361aV generated according to the inclination angle of the component elastic plate member 360a is applied to the microcomponent 800 at the position of the microcomponent 800b. Further, the horizontal force F361aH generated according to the inclination angle of the component elastic plate member 360a is applied to the microcomponent 800 at the position of the microcomponent 800b. The micro component 800 at the position of the micro component 800b is transferred to the position of the micro component 800c by applying the resultant force of the forces F361aH and F361aV, that is, the force F801.

  In addition, it is preferable that the value of the inclination angle (α) of the component elastic plate member 360 a is larger than the vibration angle of the first transport member 320. Thereby, even when the vibration of the component supply device is reduced, the vibration of the third transport member 350 can be decreased after the vibration of the first transport member 320 is decreased. It can be returned to 200. Specifically, since the inclination angle (α) is determined by the vertical acceleration, it is individually set depending on the vibration frequency.

  As described above, the micro component 800 in the third conveying member 350 is transferred from the position of the micro component 800a to the position of the micro component 800b, and is transferred from the position of the micro component 800b to the position of the micro component 800c.

  With the above configuration, horizontal vibration is applied from the horizontal vibration transmission member 360b to the third conveying member 350, and the horizontal vibration is caused by the component elastic plate member 360a in the vertical direction (force F360aV). In addition, the third conveying member 350 can be stably vibrated because it is divided and supplied in a horizontal direction (force F360aH). That is, even when a pitching phenomenon occurs in the linear part feeder 300, the micropart 800 can be stably conveyed. Furthermore, it is possible to easily change the vibration frequency, the spring constant, etc., and to easily obtain an arbitrary amplitude.

  In the component supply apparatus 300 according to the present invention, the conveyance path formed in the first conveyance member 310 and the second conveyance member 320 corresponds to a straight conveyance path, the linear part feeder 300 corresponds to a component supply apparatus, and the base The part 301 corresponds to the base part, the piezoelectric vibration part 303 corresponds to the vibration part, the weight part 302 corresponds to the fixed part, the vibration isolation leaf spring 380 corresponds to the vibration isolation member, and the drive leaf spring 390 corresponds to a drive member, the third transport member 350 corresponds to a reflux transport path, the horizontal direction transmission member 360b corresponds to a horizontal vibration member, and the component elastic plate member 360a corresponds to a component force member.

  Although the present invention has been described in the above-described preferred embodiment, the present invention is not limited thereto. It will be understood that various other embodiments may be made without departing from the spirit and scope of the invention. Furthermore, in this embodiment, although the effect | action and effect by the structure of this invention are described, these effect | actions and effects are examples and do not limit this invention. For example, the third conveying member 350 is not always arranged horizontally, but may be in a state of being given an upward inclination or a downward inclination.

1 is a schematic perspective view showing an example of a micropart supply device according to an embodiment of the present invention. 1 is a schematic perspective view showing an example of a micropart supply device according to an embodiment of the present invention. Schematic perspective view showing an example of the shape of a micropart conveyed in the present embodiment Schematic side view showing a partial internal structure of the linear feeder according to the present embodiment Side view of the linear part feeder 300 of FIG. The figure which showed the movement of the micro components in the 3rd conveyance member of the linear type parts feeder of FIG. 4 and FIG.

Explanation of symbols

200 Parts Feeder 300 Linear Feeder 302 Weight Unit 303 Piezoelectric Vibrating Unit 320 First Conveying Member 330 Second Conveying Member 350 Third Conveying Member 360a Component Elastic Plate Member 360b Horizontal Direction Transmitting Member 370 Fixed Plate 375 Protruding Unit 380 For Vibration Isolation Leaf spring 411 Piezoelectric element 800 Minute part 800a, 800b, 800c Position of minute part B Bolt

Claims (3)

A component supply apparatus including a linear conveyance path that linearly moves a component supplied into the conveyance path by generating vibration in the conveyance path,
A base portion disposed at the bottom;
An excitation unit that is provided with the linear conveyance path and is disposed above the base unit to generate vibration;
A fixed portion provided below the excitation portion and above the base portion;
An anti-vibration member attached to the excitation unit and the base unit and dampening vibration transmitted from the excitation unit to the base unit;
A drive member that is attached to the excitation unit and the fixed unit and elastically deforms to generate vibrations in opposite phases to the fixed unit and the excitation unit;
A reflux conveyance path for refluxing the parts conveyed by the linear conveyance path from the downstream side to the upstream side;
A fixed plate that is fixed to the fixed portion and has a flat plate shape having a protruding portion;
A horizontal vibration member provided horizontally to connect the reflux conveyance path and the protruding portion of the fixed plate;
A component member provided to be inclined at a predetermined angle from a vertical plane in order to split a horizontal vibration transmitted by the horizontal vibration member into a vertical vibration and a horizontal vibration;
A component supply device comprising: a support member fixed to the base portion and supporting the component member.   The support member extends horizontally with respect to the upstream side and the downstream side of the reflux conveyance path, and the component members are provided at both end portions of the support member so as to be inclined at a predetermined angle from vertical surfaces, respectively. The component supply apparatus according to claim 1. The support member includes two members, extends horizontally with respect to the upstream side and the downstream side of the reflux conveyance path, and is located at one third and two thirds of the total length of the reflux conveyance path. The component supply device according to claim 1, wherein each of the component force members is provided at a position inclined at a predetermined angle from a vertical plane at the position of the support member corresponding to the one.

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