JP4464445B2 - Vibrating transfer device - Google Patents

Description

  The present invention relates to a vibration type conveying apparatus, and more particularly to an apparatus configuration suitable as a parts feeder for conveying parts by vibration of a conveying body.

  In general, a vibration-type transfer device has an electromagnetic or piezoelectric vibrator connected between a support and a transfer body disposed above the support, and vibrates back and forth when the transfer body is viewed in the transfer direction. By doing so, various components such as electronic components are configured to move in the transport direction.

As such a conventional vibratory conveying device, for example, as shown in Patent Document 1 below, a vibrating body including a piezoelectric body and an elastic spring is connected to two places before and after the conveying body. By configuring the vibration direction to be obliquely upward toward the front in the transport direction, the component disposed on the transport body is configured to be guided in the transport direction.
JP 2007-137664 A

  However, in the above-described vibratory transfer device, when a piezoelectric body is used as a power source for the vibrating body, it is necessary to match the operation modes of a plurality of vibrating bodies arranged before and after the transfer direction to drive the transfer body. Therefore, it is necessary to adjust the motion between the vibrators, and because it cannot be driven efficiently due to the interaction of multiple vibrators, it is necessary to achieve both high levels of conveyance performance and low power consumption. There was a problem that could not.

  Therefore, the present invention solves the above-described problems, and an object of the present invention is to provide a vibratory transfer device that does not require operation adjustment between vibrating bodies and can realize an efficient transfer mode.

In view of such a situation, the vibratory transfer device of the present invention is arranged via a support (1, 1 ′, 7) and a vibration body (3, 4, 5, 6) above the support. In the vibration-type transfer device comprising the transfer body (2, 2 '), the piezoelectric body is connected to the support portion (1a') of the support body at the upper end and extends downward from the support portion. (3) and a first elastic body connected to the lower end of the piezoelectric body and extending upward behind the piezoelectric body in the transport direction and coupled to the transport body at a first position (2a ′). 4) and a second elastic body (5) that directly connects the transport body and the support body at a second position (2b ′, 1b ′) positioned forward in the transport direction from the first position. ) and a, wherein the piezoelectric coupling portion of the first elastic body (6) is configured such that the free end, the connecting portion By comprising the spacer (6) having a thickness in the conveyance direction, a gap (D) in the conveyance direction is provided between the lower end of the piezoelectric body and the lower end of the first elastic body, and the piezoelectric The drive part which consists of a body, the said connection part, and the said 1st elastic body is comprised by the U-shape as a whole, It is characterized by the above-mentioned.

According to the present invention, the piezoelectric body is bent and deformed around the support portion, so that the connecting portion between the piezoelectric body configured as the free end and the first elastic body is rotated back and forth in the transport direction, whereby the first Since the rear part of the transport body elastically supported by the elastic body and the second elastic body at the front and rear positions in the transport direction swings up and down and back and forth, it is possible to efficiently move the transported object on the transport body Become. Therefore, since it is not necessary to arrange a plurality of vibrators before and after in the transport direction, it is not necessary to adjust the operation between the vibrators, the manufacturing cost can be reduced, and the operation efficiency can be improved. Therefore, at a higher level, it is possible to achieve both improvement in conveyance performance and reduction in power consumption. In addition, by interposing a spacer in the connecting portion, the two can be easily connected to each other, the interference between the piezoelectric body and the first elastic body can be prevented and the respective deformation operations can be realized without hindering, and the conveying direction between them can be realized. Since the interval can be secured, it is possible to increase the swing of the transport body.

In one aspect of the present invention, the support (1, 1 ', 7) is a crank in a side view that is fixed on the support plate (1) and the support plate, and has the support portion at the upper rear part. And a support block (1 ') configured in a shape. According to this, an increase in the mass around the vibrating body is suppressed while ensuring the rigidity necessary for fixing the base end of the piezoelectric body. In addition, when the inertia weight described later is provided on the support, the effect of improving the moment of inertia due to the inertia weight can be enhanced.

  In another aspect of the invention, the support (1, 1 ', 7) is provided with an inertial mass (7) behind the first position in the transport direction. According to this, by providing the inertial mass behind the first position of the support body in the transport direction, the transport body can be efficiently swung and the transport direction can be propelled while avoiding an increase in the size of the apparatus. You can increase your power.

  In the different aspect of this invention, the said support body is installed on an installation part (9) through a vibration isolator (8). By installing the support via the vibration isolator, the swing of the support can be suppressed, vibration energy leaking from the support to the installation portion can be reduced, and the conveyance efficiency can be further improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a vibration type conveying apparatus (linear feeder) of the present embodiment.

  In the vibration type conveying apparatus of the present embodiment, a support block 1 ′ is fixed on a flat support plate 1, and the upper end (base end) of the piezoelectric body 3 is located at the upper rear part (support part) 1 a ′ of the support block 1 ′. Are concatenated. The piezoelectric body 3 is configured such that a piezoelectric layer is laminated on the surface of an elastic plate made of a shim plate or the like so that it can be bent and deformed. For example, a bimorph type (when the piezoelectric layer is laminated on both front and back surfaces) or a unimorph type ( (When the piezoelectric layer is laminated on either of the front and back surfaces). The support block 1 ′ only needs to have a rigidity necessary for fixing the base end of the piezoelectric body 3 to the support plate 1. In the illustrated example, the support block 1 ′ is configured in a crank shape in a side view, and thus the support block 1 ′ can be connected to both the first elastic plate 4 and the second elastic plate 5, and While securing rigidity, an increase in the mass around the vibrating body is suppressed, and the effect of improving the moment of inertia by the inertial mass 7 described later is enhanced.

  The lower end of the piezoelectric body 3 is connected to the front end portion of the spacer 6, and the lower end of the first elastic plate (leaf spring) 4 is connected to the rear end portion of the spacer 6. The spacer 6 constitutes a connecting portion that connects the lower end of the piezoelectric body 3 and the lower end of the first elastic plate 4. Further, the spacer 6 has a thickness in the transport direction F, so that an interval D in the transport direction F is provided between the lower end of the piezoelectric body 3 and the lower end of the first elastic plate 4.

  The upper end of the first elastic plate 4 is connected to a rear portion (rear end of the trough 2 ') 2a' of the transport body disposed above. In the case of the present embodiment, the transport body is composed of a transport plate 2 provided with a track 2s for guiding the component W, and a trough 2 'to which the transport plate 2 is fixed.

  With the above configuration, the drive unit including the piezoelectric body 3, the spacer 6, and the first elastic plate 4 is configured in a U shape as a whole, and the coupling unit configured by the spacer 6 operates as a free end. Yes. Here, if the upper rear portion 1a ′ that is the support portion is fixed, the front end of the spacer 6 (connecting portion) is bent and deformed as shown by the arrow T in the drawing centering on the base end O on the support portion side. . An upper end of a second elastic plate (leaf spring) 5 is connected to a front portion (front end of the trough 2 ') 2b' located in front of the conveyance direction F from the rear portion 2a '. The lower end of the plate 5 is connected to the lower front portion 1b 'of the support block. As a result, the transport body 2 is supported by the first elastic plate 4 and the second elastic plate 5 at positions before and after in the transport direction F, respectively.

  An inertial mass 7 is fixed on the rear part of the support plate 1. The inertial mass 7 is for moving the center of gravity of the support composed of the support plate 1, the support block 1a, and the inertial mass 7 to the rear in the transport direction F. Preferably, the center of gravity is the piezoelectric body 3, the spacer 6, and It is configured to be positioned rearward when viewed in the transport direction F with respect to the drive unit made of the first elastic plate 4.

  In order to ensure efficient vibration of the carrier, the mass of the support is configured to be sufficiently larger than the mass of the carrier. Further, the inertial mass 7 makes the moment of inertia of the support centered on the base end O larger than that of the carrier.

  The support plate 1 is mounted on the installation plate 9 via a plurality of vibration isolation materials 8 that are vibration isolation bodies. The vibration isolator 8 is made of an elastic material such as rubber or a spring (coil spring), and suppresses the vibration of the support plate 1 from leaking to the installation plate 9 side. In particular, in the present embodiment, the reaction to the support due to the swinging of the transfer body described later is absorbed.

  In this embodiment, due to the bending deformation T of the piezoelectric body 3 described above, the transport body swings as shown by an arrow G in a mode having a swing center downward, and is illustrated in a mode having a swing center in the front. As shown by the arrow U, it swings and vibrates obliquely upward toward the front in the transport direction F as a whole, so that the component W on the transport plate 2 can be transported in the transport direction F. As for the swinging G and U of the transport body, the drive unit composed of the piezoelectric body 3, the first elastic plate 4 and the second elastic plate 5 is inclined to the opposite side to the transport direction F as in the case of the conventional vibration type transport device. Even if it is not, it is possible to efficiently move the workpiece in the conveyance direction F. However, this is not limited to a mode in which the driving unit is in a vertical posture as in the illustrated example, and the piezoelectric body 3 and both elastic plates 4 and 5 may be installed in an inclined posture.

  Here, when the thickness of the spacer 6 is increased and the distance D in the transport direction F at the connecting portion between the piezoelectric body 3 and the first elastic plate 4 is increased, the first elasticity indicated by the illustrated arrow S caused by the bending deformation T is obtained. Since the vertical deflection of the plate 4 also increases, the amplitude of the swing U increases. However, since the conveyance efficiency varies depending on the relationship between the swings G and U, the distance D is used to realize the optimal relationship between the swings G and U in order to obtain an efficient vibration mode suitable for the component W. Must be set appropriately.

  In addition, the modes of the swinging G and U of the transport body are determined only by the simple mass ratio of the support body (support plate 1, support block 1 'and inertial mass 7) and the transport body (transport plate 2, trough 2'). Instead, it also depends on the ratio of the moment of inertia around the base end O of the support and the transport body. Here, by disposing the inertial mass 7 before and after in the transport direction, the moment of inertia of the support body is increased, whereby the transport body can be efficiently swung. In particular, in the present embodiment, the inertia mass 7 is arranged behind the rear end portion 2a ′ (or the drive unit) of the transport body in the transport direction F in the support body, thereby increasing the moment of inertia while increasing the moment of inertia. It is possible to suppress the length in the front-rear direction.

  Note that the vibratory conveyance device of the present invention is not limited to the above-described illustrated examples, and it is needless to say that various changes can be made without departing from the gist of the present invention. For example, although the said embodiment shows the example which comprised the linear feeder (conveying apparatus which aligns components and supplies in a row), this invention is not limited to the said embodiment, For example, vibration type hopper (several hoppers) The present invention can also be applied to a conveying device that supplies parts to a bowl feeder or a linear feeder in a lump.

1 is a schematic configuration diagram of an embodiment according to the present invention.

DESCRIPTION OF SYMBOLS 1 ... Support plate, 1 '... Support block, 1a' ... Upper rear part, 1b '... Lower front part, 2 ... Conveyance plate, 2' ... Trough, 2a '... Rear part, 2b' ... Front part, 3 ... Piezoelectric body 4 ... 1st elastic board, 5 ... 2nd elastic board, 6 ... Spacer

Claims (4)

A vibration type comprising a support (1, 1 ', 7) and a transport body (2, 2') disposed above the support via a vibration body (3, 4, 5, 6) In the transport device
The vibration exciter has an upper end connected to the support portion (1a ') of the support, a piezoelectric body (3) extending downward from the support portion, and a lower end of the piezoelectric body. A first elastic body (4) that extends upward at the rear in the transport direction and is connected to the transport body at the first position (2a ′), and a first elastic body (4) that is positioned forward in the transport direction from the first position. A second elastic body (5) that directly connects the transport body and the support body at the second position (2b ', 1b'), and a connecting portion between the piezoelectric body and the first elastic body ( 6) is configured to operate as a free end, by which the connecting portion is constituted by a spacer (6) having a thickness in the conveying direction, a lower end and the first elastic member of the piezoelectric An interval (D) in the transport direction is provided between the lower end and the piezoelectric body, the connecting portion, and Serial vibratory feeder driving portion first made of an elastic body is characterized by being composed U-shape as a whole. The support (1, 1 ′, 7) is a support plate (1) and a support block (1) fixed on the support plate and configured in a crank shape in a side view with the support portion at an upper rear portion. 2) The vibratory transfer device according to claim 1, further comprising:   The vibratory conveyance according to claim 1 or 2, wherein the support (1, 1 ', 7) is provided with an inertial mass (7) behind the first position in the conveyance direction. apparatus. 4. The vibratory transfer device according to claim 3 , wherein the support is installed on the installation part (9) via a vibration isolator (8).

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