CN112811097A

CN112811097A - Vibration carrying device

Info

Publication number: CN112811097A
Application number: CN202010856673.2A
Authority: CN
Inventors: 田边喜文; 川内悠生
Original assignee: Sinfonia Technology Co Ltd
Current assignee: Sinfonia Technology Co Ltd
Priority date: 2019-11-18
Filing date: 2020-08-24
Publication date: 2021-05-18
Also published as: JP2021080047A; TW202120406A; KR20210060302A; JP7328539B2

Abstract

The invention provides a vibration conveying device which can avoid the increase of the installation area in the width direction and the complication of control and can convey workpieces on one linear conveying surface under various vibration conditions. A vibration conveying device (X) for conveying a conveying object on a conveying surface in a predetermined conveying direction by vibration comprises: a first mass body (1) including a conveying surface; a second mass body (2) which does not include a conveying surface; a first elastic body (4) connecting the first mass body (1) and the second mass body (2); a second elastic body (5) connecting the second mass body (2) and the third mass body (3); and an excitation unit (6) that drives the first elastic body (4) and the second elastic body (5) under vibration conditions having frequencies different from each other.

Description

Vibration carrying device

Technical Field

The present invention relates to a vibration conveying apparatus capable of conveying a conveying object in a predetermined direction.

Background

Conventionally, there is known a vibration conveying apparatus for conveying a conveying object such as a workpiece along a linear conveying path (linear conveying path or groove). Since the conveying direction of the workpiece on the linear conveying path is one direction, for example, the following structure is adopted: when it is necessary to convey the workpiece while aligning the postures of the workpiece and convey the workpiece to the next process, the return conveyance paths are arranged so as to be parallel to the linear conveyance paths, the workpiece determined to have a posture other than the desired posture before reaching the discharge port of the linear conveyance paths is transferred from the linear conveyance paths to the return conveyance paths, and the workpiece is conveyed in the opposite direction to the workpiece on the linear conveyance paths on the return conveyance paths and returned to the upstream side of the linear conveyance paths.

In this way, in the vibration conveyor including the linear conveyance path, the return conveyance path is provided along the linear conveyance path, and thus it is possible to meet the demand for conveying the workpiece in both the conveyance direction (forward direction) and the return direction (backward direction). Further, in order to independently control the linear conveyance path and the return conveyance path by vibration, two vibration excitation means are required, and it is necessary to provide two vibration excitation means in this type of vibration conveyance device.

However, if the vibration carrying apparatus is configured such that the linear carrying path and the return carrying path are arranged side by side in the width direction, the installation area in the width direction is increased as compared with a vibration carrying apparatus including only the linear carrying path without including the return carrying path.

The present applicant has proposed a dual-motion parts feeder that is practically used as a vibration conveying apparatus capable of conveying a workpiece in an advancing direction or a retreating direction on a single linear conveying path, in which a drive circuit includes two horizontal and vertical axes and controls an elliptical (linear) amplitude by combining the amplitude with a phase control (for example, patent document 1: patent No. 4977934).

However, since the double-component feeder is configured to be able to impart horizontal and vertical vibrations with an appropriate phase difference by independently controlling the horizontal and vertical amplitudes, the scale and load of the circuit on the driving side become large, and it is difficult to control the double-component feeder. The details thereof are described below. As described above, the double-fed parts feeder is configured to control the elliptical amplitude by applying the vibration in both the horizontal and vertical directions to have the appropriate phase difference, and therefore, it is necessary to apply signals independently in the horizontal and vertical directions. Since the driving control is performed by utilizing the resonance phenomenon on the reverse side, it is necessary that the frequencies in both the horizontal and vertical directions are the same. In the double-moving-part feeder having such a configuration, although a plurality of vibration conditions can be generated at the same frequency, a plurality of signals need to be given to both the horizontal and vertical directions, and the phase difference between the signals has to be controlled, so that the control load is increased and the complexity of the control is increased.

Disclosure of Invention

The present invention has been made in view of the above problems, and a main object of the present invention is to provide a vibration conveying apparatus capable of conveying a workpiece on one linear conveying surface under a plurality of types of vibration conditions of different frequencies while avoiding an increase in installation area in a width direction and complication in control.

That is, the present invention is a vibration transporting apparatus capable of transporting a transport object on a linear transporting surface by vibration, comprising: a first mass body including a linear conveyance face; a second mass body (disposed below the first mass body and not including the linear conveyance surface); a first elastic body that connects the first mass body and the second mass body to each other; a second elastic body that connects the second mass body and the other mass bodies to each other; and an excitation unit that drives the first elastic body and the second elastic body under vibration conditions having frequencies different from each other. Here, examples of the object to be conveyed include an electronic component (workpiece) having a minute size and a medical component, but the object to be conveyed is not particularly limited as long as the object can be conveyed by the vibration conveying apparatus of the present invention.

The inventors of the present invention have found that, in the vibration transport apparatus of the present invention, when the first elastic body connecting the first mass body and the second mass body is driven by the excitation means to vibrate, the second mass body functions as a counterweight, and the second elastic body functions as a vibration isolator, so that the first mass body vibrates, and the transport object on the linear transport surface can be transported under predetermined vibration conditions. When the second elastic body is driven and vibrated under a vibration condition different from that of the first elastic body by the excitation means, the other mass bodies function as counterweights, and the first mass body, the second mass body, and the first elastic body are integrally vibrated, so that the object to be conveyed on the linear conveyance surface can be conveyed under a vibration condition different from that of the first elastic body at the time of vibration.

In the vibration transport device of the present invention, the component including the linear transport surface is only the first mass body, and the first elastic body and the second elastic body directly or simply connected to the first mass body are driven by the excitation means under different vibration conditions from each other, so that the individual linear transport surface can be vibrated according to the vibration conditions to transport the transport object on the linear transport surface under different vibration conditions. Here, the different vibration conditions mean that a plurality of vibration conditions having different frequencies are generated, and the conditions include the conveying direction of the workpiece, the amplitude of the linear conveying surface, the conveying speed, and the like. For example, the conveyance direction may be a forward direction (forward direction) or a reverse direction (backward direction) along the longitudinal direction of the single linear conveyance surface, and the conveyance speed and amplitude may be different in each direction. Therefore, if the conventional vibration carrying apparatus is configured to carry the object to be carried in both the carrying direction (forward direction) and the return direction (backward direction) by arranging the linear carrying path and the return carrying path in parallel in the width direction, the vibration carrying apparatus according to the present invention can realize driving under different vibration conditions by causing the first mass body including the linear carrying surface to function as a single groove, can carry the object in both the carrying direction and the return direction without providing a dedicated return carrying path, can reduce the width dimension of the apparatus, can reduce the installation area compared with the conventional art, and can realize miniaturization.

In the vibration conveying device according to the present invention, as a preferable example of the exciting means for driving the first elastic body and the second elastic body under different vibration conditions from each other, a configuration may be mentioned in which the first elastic body and the second elastic body are driven one by one with different resonance frequencies from each other. With such a configuration, when the first elastic body is vibrated at the resonance frequency of the first elastic body, the second elastic body does not vibrate due to the difference in resonance frequency, and the conveyance process of the conveyance object conveyed by the vibration of the first elastic body is not adversely affected. Similarly, when the second elastic body is vibrated at the resonance frequency of the second elastic body, the first elastic body does not vibrate due to the difference in resonance frequency, and the conveyance process of the conveyance object conveyed by the vibration of the second elastic body is not adversely affected. Further, since the vibration transport apparatus according to the present embodiment is configured to drive the first elastic body and the second elastic body one by one, the load of control can be significantly reduced as compared with the double-acting control.

In particular, in the vibration conveyor of the present invention, since the vibration angles of the first elastic body and the second elastic body are made different from each other, it is possible to appropriately switch between forward conveyance and backward conveyance (conveyance and return), and to set and change the conveyance speed.

That is, in the present invention, as schematically shown in fig. 1, by adopting a layout in which the first mass body is arranged above the second mass body and the first elastic bodies are arranged in the height direction via the first mass body and the second mass body, it is possible to realize a small-sized vibration conveying apparatus that effectively utilizes a space in the height direction with less restrictions as installation conditions of the apparatus, as compared with a space in the width direction. Fig. 1 schematically shows a vibration direction V1 of the first elastic body when the first elastic body is driven by the excitation means and a vibration direction V2 of the second mass body when the second elastic body is driven by the excitation means, and illustrates a mode in which the conveyance object on the linear conveyance surface included in the first mass body is conveyed in the forward direction in the case of the vibration direction V1 and the conveyance object on the linear conveyance surface is conveyed in the backward direction in the case of the vibration direction V2.

In the present invention, in order to suppress the dimension in the height direction of the entire vibration transporting apparatus, it is desirable to have a structure in which the lower end portion of the first elastic body is connected to the lower end portion of the second mass body, and the upper end portion of the second elastic body is connected to the upper end portion of the second mass body. In this case, the first elastic body and the second elastic body are arranged in the longitudinal direction, and the height of the entire device can be reduced as compared with the structure shown in fig. 1.

In the vibration conveyor according to the present invention, the vibration conveyor includes a set including a first mass body and a first elastic body, and a set including a second mass body and a second elastic body, and a set including another mass body (first option mass body) and an elastic body (first option elastic body), and includes three or more sets. In this case, by driving the elastic bodies of the respective sets under different vibration conditions by the excitation means, the individual linear conveyance surfaces can be vibrated according to the respective vibration conditions, and the conveyance target object can be conveyed on the linear conveyance surfaces under different vibration conditions.

The effects of the present invention are as follows.

According to the present invention, it is possible to provide a vibration conveying apparatus having a simple configuration and a reduced space in the width direction (direction orthogonal to the conveying direction), capable of conveying a conveying object on a linear conveying surface by vibrating a single linear conveying surface under a plurality of vibration conditions having different frequencies, for example, switching the direction in the forward direction (forward direction) and the direction in the reverse direction (backward direction) along the longitudinal direction of the workpiece conveying surface, or capable of changing the amplitude and conveying speed of vibration conveyance, and having a high degree of freedom of conveyance.

Drawings

Fig. 1 is a diagram showing a model example of a vibration conveying apparatus according to the present invention.

Fig. 2 is an overall perspective view of the vibration carrying device according to the embodiment of the present invention.

Fig. 3 is an exploded perspective view of the vibration conveying apparatus according to the embodiment.

Fig. 4 is a sectional view of the vibration carrying apparatus of this embodiment.

Fig. 5 is a view corresponding to fig. 1 showing the overall configuration of the vibration carrying apparatus according to the embodiment.

Fig. 6 is an explanatory view of the operation of the vibration conveyor according to this embodiment when the first elastic body is driven.

Fig. 7 is an explanatory view of the operation of the vibration conveyor according to this embodiment when the first elastic body is driven.

Fig. 8 is an explanatory view of the operation of the vibration conveyor according to this embodiment when the second elastic body is driven.

Fig. 9 is an explanatory view of the operation of the vibration conveyor according to this embodiment when the second elastic body is driven.

Fig. 10 is a view corresponding to fig. 1 showing a modification of the vibration conveying apparatus according to the embodiment.

In the figure:

1-first mass body, 2-second mass body, 4-first elastic body, 5-second elastic body, 6-vibration exciting unit, L-linear conveying surface and X-vibration conveying device.

Detailed Description

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

As shown in fig. 2 to 4 (fig. 2 is an overall perspective view of the vibratory conveying apparatus X, fig. 3 is an exploded perspective view of the vibratory conveying apparatus X, and fig. 4 is a cross-sectional view of the vibratory conveying apparatus X), the vibratory conveying apparatus X of the present embodiment includes: a first mass body 1 including a linear conveyance surface L as a linear conveyance surface on an upward surface; a second mass body 2 disposed below the first mass body 1; a third mass body 3 (corresponding to "another mass body" of the present invention) having a downward surface disposed below the second mass body 2; a first elastic body 4 connecting the first mass body 1 and the second mass body 2; a second elastic body 5 connecting the second mass body 2 and the third mass body 3; and an excitation unit 6 that generates conditions for driving the first elastic body 4 and the second elastic body 5 under vibration conditions having different frequencies from each other (the excitation unit 6 that excites the first mass body 1 and the second mass body 2 so as to drive them differently depending on the vibration conditions).

The first mass body 1 includes: a long-sized first mass body main block 11 including a linear conveyance face L on an upward face; and a first mass sub-block 13 integrally fixed to the first mass main block 11 and including first attachment portions 12 to which the first elastic bodies 4 are attached at both ends in the longitudinal direction. As shown in fig. 2 to 4, a first opening 14 that opens downward is formed in the first mass main block 11, an upper protruding portion 15 provided in the first mass sub-block 13 is housed in the first opening 14, and in this state, the first mass main block 11 and the first mass sub-block 13 are fixed to each other by a fixing member such as a screw. The first opening 14 has a shape that does not reach the linear conveyance plane L (does not open upward). In the first mass body 1 mainly composed of two parts, the first mass body main block 11 functions as a linear conveyance path (linear rail, groove), and the first mass body sub block 13 functions as a slide table. A workpiece as a conveyance target is supplied to the linear conveyance plane L from a workpiece supply device such as a hopper, not shown.

In the following description, the same direction as the extending direction (longitudinal direction) of the linear conveyance plane L is referred to as a front-rear direction H, and a direction orthogonal to the extending direction (longitudinal direction) of the linear conveyance plane L in the horizontal plane is referred to as a width direction W (transverse direction) (see fig. 2 and the like).

The second mass body 2 includes: a second mass main block 22 including second mounting portions 21 to which the first elastic bodies 4 are mounted at both ends in the longitudinal direction; and a second mass body sub block 24 integrally fixed to the second mass body main block 22 and including third attaching portions 23 to which the second elastic bodies 5 are attached at both ends in the longitudinal direction. A second opening 25 that opens in the vertical direction and in any one of the width directions W (near the paper surface in fig. 2 to 4) is formed in the second mass main block 22, and the entire second mass sub-block 24 is housed in the second opening 25, and in this state, the second mass main block 22 and the second mass sub-block 24 are fixed to each other by a fixing member such as a screw. The second mass body 2 of the present embodiment includes a cover 26, and in a state where the second mass body sub block 24 is accommodated in the second opening 25 of the second mass body main block 22, the cover 26 sandwiches the second mass body sub block 24 with the second mass body main block 22, and the cover 26 is also integrally fixed to the second mass body main block 22 and the second mass body sub block 24. The second mass sub-block 24, which is accommodated in the second opening 25 of the second mass main block 22, does not interfere with the second mass main block 22 and the cover 26 in the front-rear direction H and the width direction W (see fig. 4). In the second mass body 2 in which the three parts (the second mass body main block 22, the second mass body sub-block 24, and the cover 26) are mainly assembled, the second mass body sub-block 24 functions as a second elastic body fixing block.

The third mass body 3 includes: a third mass body main block 31 set to have a larger dimension in the front-rear direction H than the second mass body 2; and a third mass body sub-block 33 integrally fixed to the third mass body main block 31 and including fourth attaching portions 32 to which the second elastic bodies 5 are attached at both ends in the longitudinal direction. The third mass main block 31 is formed with a third opening 34 that opens upward, and the entire third mass sub-block 33 is housed in the third opening 34, and in this state, the third mass main block 31 and the third mass sub-block 33 are fixed to each other by a fixing member such as a screw. The third opening 34 is a bottomed opening, and the third mass sub-block 33 in the state of being accommodated in the third opening 34 does not interfere with the third mass main block 31 in the front-rear direction H and the width direction W (see fig. 4). The third mass block 33 functions as a second elastic body fixing block, similarly to the second mass block 24. The second mass body sub-block 24 moves with the vibration of the second elastic body 5, and the third mass body sub-block 33 does not move (is fixed) regardless of the presence or absence of the vibration of the second elastic body 5.

The vibration transport apparatus X of the present embodiment can be used in a state where the third mass body 3 is placed in an appropriate apparatus (connected state) at the site of the introduction destination of the vibration transport apparatus X. Fig. 2 and the like show a mode in which the third mass body 3 is connected to a platen 7 that can be regarded as being equivalent to a connection target device at an introduction destination via a vibration isolation spring 8. Specifically, the anti-vibration spring mounting portions 35 to which the anti-vibration springs 8 are mounted are provided at both longitudinal ends of the third mass main block 31, and the lower end portions of the anti-vibration springs 8 whose upper end portions are fixed to the anti-vibration spring mounting portions 35 are fixed to the anti-vibration spring mounting portions 71 provided at both longitudinal ends of the platen 7.

The first elastic body 4 is a plate spring, and an upper end portion of the plate spring is fixed to the first mass body 1 by a first mounting portion 12 provided in the first mass body sub block 13, and a lower end portion of the plate spring is fixed to the second mass body 2 by a second mounting portion 21 provided in the second mass body main block 22.

The second elastic body 5 is a plate spring, and the upper end portion of the plate spring is fixed to the second mass body 2 by a third mounting portion 23 provided in the second mass body sub block 24, and the lower end portion thereof is fixed to the third mass body 3 by a fourth mounting portion 32 provided in the third mass body sub block 33.

Here, the overall configuration of the vibration conveying apparatus X of the present embodiment can be grasped as a model example shown in fig. 5. When the entire vibration transport apparatus X in the figure is regarded as a single structure, if the third mass body 3 is grasped as a basis, the second mass body 2 corresponds to a single-layer portion, and the first mass body 1 corresponds to a two-layer portion. The first mass body 1 corresponding to the two-layer portion causes different behaviors (vibrations) when the first elastic body 4 is driven and when the second elastic body 5 is driven.

As shown in fig. 4, the vibration carrying apparatus X of the present embodiment is configured as follows: the lower end of the first elastic body 4 is connected to the lower end of the second mass body 2, and the upper end of the second elastic body 5 is connected to the upper end of the second mass body 2. In order to realize such a configuration, in the present embodiment, a pair of second elastic bodies 5 is disposed between the pair of first elastic bodies 4 in the front-rear direction H. Thereby, the height dimension can be suppressed as compared with the structure in which the first elastic body 4 and the second elastic body 5 are arranged in the height direction as shown in fig. 5.

In the vibration conveying apparatus X of the present embodiment, the inclined posture (orientation, angle) of the first elastic body 4 is different from the inclined posture of the second elastic body 5. That is, in the vibration transport apparatus X of the present embodiment, the vibration angle of the first elastic body 4 and the vibration angle of the second elastic body 5 are different from each other. In particular, in the present embodiment, the inclination direction of the second elastic body 5 is set in a direction opposite to the inclination direction of the first elastic body 4 (the direction in which the upper end of the first elastic body 4 faces). As described above, in the vibration conveying device X of the present embodiment, the vibration angle of the first elastic body 4 and the vibration angle of the second elastic body 5 are set to be different from each other, and the conveying direction of the conveyed object on the linear conveying surface L when the first elastic body 4 is vibrated is set to be opposite to the conveying direction of the workpiece on the linear conveying surface L when the second elastic body 5 is vibrated (forward direction and backward direction).

The vibration conveying apparatus X of the present embodiment is configured to be switchable between an excited state in which the first elastic body 4 is vibrated by the excitation unit 6 and an excited state in which the second elastic body 5 is vibrated, by changing the resonance frequencies of the first elastic body 4 and the second elastic body 5 from each other. In the present embodiment, the resonance frequency of the first elastic body 4 is set to 500Hz, and the resonance frequency of the second elastic body 5 is set to 200 Hz. Although not illustrated, the excitation section 6 may be configured using an appropriate component such as a coil or a piezoelectric element, and a controller that controls switching of the excitation state and the like is also included in the excitation section 6. In this way, the excitation section 6 of the present embodiment excites the first elastic body 4 and the second elastic body 5 in accordance with the vibration conditions, so that the first elastic body 4 and the second elastic body 5 are driven differently.

When the first elastic body 4 is vibrated at the resonance frequency by the excitation section 6, the linear conveyance plane L set in the first mass body 1 repeats vibration from the lower left of the paper surface toward the upper right of the paper surface as indicated by an arrow A, B in fig. 6 and 7, and the workpiece can be conveyed in the right direction of the paper surface. The conveyance direction in this case is referred to as the forward direction. Therefore, the first elastic body 4 is also referred to as a forward elastic body. When the first elastic body 4 performs the operation of advancing the workpiece at 500Hz, the first elastic body 4 is hardly elastically deformed because the resonance frequency of the second elastic body 5 is different from the resonance frequency of the first elastic body 4, and the advancing conveyance of the workpiece is not affected. Further, the second mass body 2 and the third mass body 3 are connected to the second elastic body 5 and therefore vibrate like a single rigid body. When the first elastic body 4 vibrates at the resonance frequency, the second mass body 2 functions as a counterweight, the second elastic body 5 functions as a vibration isolator (auxiliary vibration isolation spring), and the first mass body 1 vibrates so as to convey the workpiece on the linear conveyance plane L in the forward direction.

On the other hand, when the second elastic body 5 is vibrated at the resonance frequency by the excitation means 6, the linear conveyance plane L set in the first mass body 1 repeats vibration from the lower right of the paper surface toward the upper left of the paper surface as indicated by an arrow C, D in fig. 8 and 9, and the workpiece can be conveyed in the left direction of the paper surface, that is, in the backward direction. When the second elastic body 5 performs the operation of retreating the workpiece at 200Hz, the resonance frequency of the first elastic body 4 is different from the resonance frequency of the second elastic body 5, and therefore, the original function (elastic deformation of conveying the workpiece forward) is not exerted, and the retreating conveyance of the workpiece is not affected. Further, the first mass body 1 and the second mass body 2 are connected to the first elastic body 4 and thus vibrate as one rigid body. When the second elastic body 5 vibrates at the resonance frequency, the third mass body 3 functions as a counterweight, and the first mass body 1, the second mass body 2, and the first elastic body 4 vibrate to integrally convey the workpiece on the linear conveyance plane L in the forward direction. In fig. 5, an arrow V1 indicates a vibration direction when the first elastic body 4 is driven, and an arrow V2 indicates a vibration direction when the first elastic body 4 is driven.

In order to maximize the amplitude of the first mass body 1 including the linear conveyance plane L, it is desirable to make the lower mass body heavy, and in the vibration conveyance device X of the present embodiment in which the first mass body 1, the second mass body 2, and the third mass body 3 are arranged in a layered manner in this order from above, the relationship among the masses of the first mass body 1, the second mass body 2, and the third mass body 3 is set to [ the mass of the first mass body ≦ the mass of the second mass body ], and is set to [ (the mass of the first mass body + the mass of the second mass body) ≦ the third mass body ]. The conveying speed of the workpiece on the linear conveying plane L increases as the amplitude of the first mass body 1 increases. In the present embodiment, the third mass body 3 is configured to function as a counterweight, so that the weight ratio described above can be ensured.

As described above, according to the vibration carrying device X of the present embodiment, different vibration conditions, that is, vibration of the forward-moving carried workpiece and vibration of the backward-moving carried workpiece can be realized using one tank, and compared with a conventional method in which forward-moving and backward-moving of the workpiece are realized by separate independent tanks (two tanks arranged side by side in the width direction W), the vibration carrying device X can realize a structure in which the entire device is downsized, particularly, downsized in the width direction W, and the driving for forward-moving and the driving for backward-moving do not interfere with each other while having a relatively simple structure that can be regarded as one mass system. Further, the vibration transport apparatus X according to the present embodiment can realize a configuration in which the vibration is controlled by switching between forward transport and backward transport by one drive circuit, and therefore, the circuit scale and load on the drive side can be suppressed as compared with the double-action control.

Further, according to the vibration conveying apparatus X of the present embodiment, the resonance frequencies of the first elastic body 4 and the second elastic body 5 are different from each other, and the vibration conveying apparatus X is configured to vibrate and drive one by one.

Further, according to the vibration conveying apparatus X of the present embodiment, since the vibration angle of the first elastic body 4 is different from the vibration angle of the second elastic body 5, it is possible to appropriately switch between forward conveyance and backward conveyance (conveyance and return) and to set and change the conveyance speed of the workpiece on the tank.

In particular, according to the vibration conveying apparatus X of the present embodiment, by adjusting the resonance frequency and the vibration angle of the first elastic body 4 and the second elastic body 5, it is possible to select whether to smoothly vibrate or roughly vibrate the linear conveying surface L of the first mass body 1 that serves as the groove, and in the former case, it is possible to convey the work while smoothly aligning the work, and in the latter case, it is possible to convey the work while scattering the work on the groove. Further, according to the vibration conveying device X of the present embodiment, when the workpiece is jammed in the middle of conveying the workpiece on the tank in the forward direction or the backward direction, the workpiece can be prevented from being jammed by returning the workpiece in the reverse direction (conveying the workpiece in the backward direction or the forward direction).

In the vibration transport apparatus X of the present embodiment, since the first mass body 1 is disposed above the second mass body 2, it is possible to avoid an increase in the dimension in the width direction W of the entire apparatus X, and at the site of introduction of the apparatus X, it is possible to install the vibration transport apparatus X using a space in the height direction with less restriction on the dimension than in the width direction W.

In addition, since the vibration transport apparatus X of the present embodiment is configured such that the lower end portion of the first elastic body 4 is connected to the lower end portion of the second mass body 2 and the upper end portion of the second elastic body 5 is connected to the upper end portion of the second mass body 2, the apparatus X is also compact in the height direction.

The present invention is not limited to the above-described embodiments. For example, in the above-described embodiment, the vibration transport device X having the two-layer structure is illustrated as shown in fig. 5, but a vibration transport device having a structure of three or more layers, such as a three-layer structure or a four-layer structure, may be used. The number of layers is determined by the number of elastomers having different resonance frequencies. For example, in the case of the vibration transport apparatus X having the three-layer structure shown in fig. 10, the workpiece on the linear transport surface is transported in the forward direction by the vibration V1 during driving of the first elastic body 4 connecting the first mass body 1 and the second mass body 2, the workpiece on the linear transport surface is transported in the backward direction by the vibration V2 during driving of the second elastic body 5 connecting the second mass body 2 and the third mass body 3, and the workpiece on the linear transport surface is transported in the backward direction by the vibration V2 ' during driving of the third elastic body 5 ' connecting the third mass body 3 and the fourth mass body 3 ', and the vibration V2 ' during driving of the third elastic body 5 ' can be set to be larger than the vibration V2 during driving of the second elastic body 5. In the case of the three-layer structure (three-layer structure) shown in fig. 10, the elastic body 4 at the uppermost layer (uppermost layer) serves as a forward conveying elastic body, the elastic body 5 at the second layer from the top serves as a backward (weak) conveying elastic body, and the elastic body 5' at the third layer from the top serves as a backward (strong) conveying elastic body.

In the above-described embodiment, the resonance frequencies of the first elastic body (forward elastic body) and the second elastic body (backward elastic body) may be set to 500Hz and 200Hz, and the forward and backward actions of the elastic bodies may be reversed. The resonance frequency (driving frequency) of each elastic body may be set to an arbitrary value within a range in which the elastic bodies do not simultaneously vibrate (resonate).

In the above-described embodiment, the vibration of the forward and backward movement is not transmitted to the installation surface (ground) by the vibration isolation spring 8, but the vibration isolation spring 8 may be eliminated and installed directly on the installation surface (ground) or the like (see, for example, fig. 1). In this case, it is not necessary to include a counterweight for making the lower portion the heaviest, and the number of components can be reduced and the weight of the entire apparatus can be reduced.

The above-described embodiment is a system in which the forward and backward movements are not simultaneously vibrated, but a system in which a plurality of drive circuits are provided and simultaneously vibrated may be employed. For example, in the case where the forward elastic body and the backward elastic body are vibrated at the same time and an effect (composite effect) of enhancing the conveying vibration in the backward direction more than the normal backward conveying vibration is obtained, for example, compared to a structure in which the conveying vibration in the backward direction can be controlled in two stages (strong and weak) by using the three-layer structure shown in fig. 10, the conveying vibration in the backward direction can be changed in two stages by using the two-layer structure, and the effects of downsizing the apparatus and reducing the number of component parts can be obtained.

The conveying object that can be conveyed by the vibration conveying apparatus of the present invention is not limited to medical parts, electronic parts, and the like.

In addition, the specific configuration of each part such as the turning mechanism is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.

Claims

1. A vibration conveying apparatus for conveying an object to be conveyed on a linear conveying surface by vibration, the vibration conveying apparatus comprising:

a first mass body including the linear conveyance face;

a second mass body that does not include the conveyance surface;

a first elastic body connecting the first mass body and the second mass body;

a second elastic body connecting the second mass body and the other mass body; and

and an excitation unit that drives the first elastic body and the second elastic body under vibration conditions having frequencies different from each other.

2. Vibratory handling apparatus as set forth in claim 1,

the excitation section causes the resonance frequencies of the first elastic body and the second elastic body to be different from each other and drives them one by one.

3. Vibratory handling apparatus as claimed in claim 1 or 2,

the vibration angles of the first elastic body and the second elastic body are made different from each other.

4. The vibratory handling apparatus according to any one of claims 1 to 3,

the vibrations based on the different vibration conditions generated by the excitation unit include the following two types of vibrations: vibration of the conveying object is conveyed in the positive direction along the length direction of the linear conveying surface; and vibration for conveying the conveying object in the opposite direction.

5. The vibratory handling apparatus as set forth in any one of claims 1 to 4,

the first mass body is disposed above the second mass body.

6. Vibratory handling apparatus as set forth in claim 5,

a lower end portion of the first elastic body is connected to a lower end portion of the second mass body, and an upper end portion of the second elastic body is connected to an upper end portion of the second mass body.