TWI769313B - component supply device - Google Patents

Abstract

[subject] To provide a linear feeder that introduces a new structure that can adjust the vibration characteristics of each conveying part without causing an increase in size and mass, whereby workpieces can be supplied to a conveying destination at an appropriate speed even under high-speed conveying . [Solution] A structure with the following: a vibrating body (8), which imparts a predetermined vibration to the workpiece for conveying the workpiece; a first area (A1), which is conveyed from a conveying source by the vibration caused by the vibrating body (8) Workpiece; second area (A2), which connects the base end side to the first area (A1), and conveys the workpiece carried from the first area (A1) further toward the distal end side; non-active support mechanism (200) supporting at least the distal end side of the second area (A2) along the conveying direction so as to be able to vibrate independently; and a vibration transmitting portion (first leaf spring (300)) provided with A1) and the second area (A2) are different in shape, and transmit the vibration of the first area (A1) by the vibrating body (8) to the second area (A2).

Description

component supply device

The present invention relates to a component supply device that transports a workpiece, which is a transport component, to a transport destination by vibration.

Conventionally, there has been proposed a component supply apparatus which supplies vibrations to the conveying means and supplies the workpieces as the conveying means to the downstream side in the conveying direction (for example, refer to Patent Document 1). This component supply device has a structure that includes a fixed part also called a vibration isolation table and a movable part called a counterweight, the fixed part and the movable part are connected by a plate-shaped vibration spring, and the chute provided in the movable part is (shoot) Vibration causes the workpiece as the conveying member to be supplied to the downstream side in the conveying direction.

In addition, in this component supply device, generally speaking, a vibrating spring is provided on the conveyance source side to impart vibration, and on the conveyance destination side, in order to properly complete the approach to the supply destination of the component, it is formed from the conveyance source. side protruding. As a result, the tip of the chute has a shape that protrudes from the tip portion on the transport destination side, which is also called a "cantilever shape" in appearance.

[Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2012-066931

As described above, since the top end of the chute on the transport destination side of the above-described component supply device has a convex shape, the transport source side and the transport top end side connected to the vibrating body do not necessarily obtain the same vibration. Specifically, even if necessary vibration is generated on the conveyance source side near the vibrating body, the chute tip portion on the conveyance destination side is formed into a cantilever shape, so not only the vibration characteristics are different, but there is a possibility that, for example, a front-swing-like rotation may occur. Such a phenomenon is called pitching. As a result, there is a possibility that the transport efficiency of the workpiece at the tip portion may be lowered.

In order to eliminate such defects, measures such as reducing the frequency or increasing the inherent value of the chute tip side can be considered, but in recent years, it is sometimes sought to increase the conveying speed from the conventional 300~400Hz to a frequency band such as 400~800Hz. In the case of pursuing high speed, the defects caused by the cantilever become more conspicuous in such a case. Even if measures are taken to reduce the inherent value, conventional component supply devices are integrally molded from the transport source to the tip side near the transport destination, and each transport site has a structure that allows for weight reduction and adjustment of vibration characteristics. In addition, if a mechanism capable of adjusting the vibration characteristics according to the conveying position is provided separately from the linear feeder main body, problems such as an increase in size and unintended vibration characteristics due to an increase in mass arise.

The present invention was created in view of such a point, the main The purpose is to realize the provision of a linear feeder that introduces a new structure that can adjust the vibration characteristics of each conveying part without incurring an increase in size and mass, so that it can be conveyed at a high speed to the conveying destination with an appropriate amount. Speed supply of workpieces.

The present invention takes the following measures in view of the above problems.

That is, the component supply device of the present invention includes: a vibrating body that imparts predetermined vibration to the workpiece for conveying the workpiece; a first area that conveys the workpiece from a conveying source by the vibration generated by the vibrating body; and a second area. A region that connects the base end side to the first region, and conveys the workpiece carried from the first region to the distal end side; and a non-active support mechanism that moves the workpiece from the second region along the conveying direction. At least the top end side support can vibrate independently; and a vibration transmission part is set as a different shape from the first area and the second area, and transmits the vibration of the first area caused by the vibrating body to the second area; In the case where the non-active support mechanism is a pair of supporting leaf springs provided on the distal end side and the proximal end side of the second region along the conveyance direction.

In this way, the vibration characteristics of the second region can be separately set by the configuration of the non-active support mechanism and the vibration transmission portion. In addition, since the second region is supported by the non-active support mechanism at least on the distal end side, such a pitching phenomenon that rotates like a sway can be appropriately suppressed. As a result, even in high-speed conveyance, an appropriate workpiece conveyance efficiency can be realized at the front end portion. and In addition, the non-active support mechanism does not require a vibration source, so it does not incur the complexity and size of the structure. In addition, since the non-active support mechanism is configured as a pair of support leaf springs provided on the distal end side and the base end side of the second region along the conveying direction, the support leaf springs can be used to make the support plate springs in the second region. The posture during the vibration of the 2 area is more stable.

In this case, when the first area and the second area are separated, and the vibration transmission part is a transmission leaf spring connecting the first area and the second area, the second area is configured to be relatively opposite to the first area. If the area is prone to independent vibration, the transmission of vibration from the first area to the second area can be performed reasonably through the transmission leaf spring.

When the structure is further provided with an angle adjustment mechanism for adjusting the vibration characteristics of the second region by changing the angle of the support leaf spring, the vibration of the second region can be appropriately adjusted in relation to the destination of the component supply. characteristic.

When the second region is configured so that different second regions are connected in series via different vibration transmission parts, the vibration characteristics of the regions transmitted from a common vibration source can be varied in multiple steps.

As described above, according to the present invention described above, it is possible to provide a linear feeder that incorporates a new structure that can adjust the vibration characteristics of each conveying part without incurring an increase in size and mass, thereby enabling high-speed conveying. The workpiece is supplied at an appropriate speed to the transfer destination.

1: Tilt table

2: base

2a: Fastening bolts

3: Movable part

3a: Fastening bolts

4: Fixed part

4a: Fastening bolts

4c: Fastening bolts

5: Select the groove

5x: Top chute member

6: Anti-vibration spring

6a: Anti-vibration spring mounting part

7: Drive spring

8: Vibrating body

10: Link plate (even structural material)

10a: Fastening bolts

10b: connecting bolts

11: Select the groove support table

11x: protrusions

105: Main Chute

105x: Top chute

111: Main chute support table

111x: Top chute support table

200, 200’: Non-active support mechanism

201, 201': 2nd leaf spring (leaf spring for support)

203: Lower variable support part

204: Upper variable support part

204a: Cone

231: Shake Member

232: pin

233: Shake the support

233a: long hole

241: Rotary member

300: 1st leaf spring (leaf spring for transmission)

A1: Area 1

A2, A2': Area 2

DM: drive mechanism

LF: Component Supply Device (Linear Feeder)

m: fulcrum

n: center

UV, UV': Angle adjustment mechanism

V: Fixing tool

[ Fig. 1 ] A perspective view of a linear feeder for explaining the basic structure and function of the present invention.

[Figure 2] The same as the left side view.

[Figure 3] The same as the right side view.

[Fig. 4] A plan view of Fig. 2. [Fig.

[ Fig. 5] Fig. 5 is a left side view corresponding to Fig. 2 in a state in which the main chute and the distal end chute are replaced with the selection groove and the tip groove as the basic structure according to the embodiment of the present invention.

[Figure 6] The same as the right side view.

[Fig. 7] A plan view of Fig. 5. [Fig.

[ Fig. 8 ] A plan view showing a state in which a part of the element members in Fig. 7 are removed.

[ Fig. 9 ] A perspective view showing the first leaf spring used in the same embodiment.

[ Fig. 10 ] A left side view corresponding to Fig. 5 showing a modification of the present invention.

[ Fig. 11 ] A left side view corresponding to Fig. 5 showing another modification of the present invention.

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

1 is a perspective view of a linear feeder LF serving as a component supplying device for explaining the basic structure and function of an embodiment of the present invention, FIG. 2 is a left side view, and FIG. 3 is a right side view , Figure 4 is a plan view of Figure 2. 5 to 8 have basically the same structure as that of FIGS. 1 to 4, but a speed adjustment function can be provided by improving a part of the structure to cope with the increase in speed.

First, the basic configuration of FIGS. 1 to 4 will be described. As shown in FIG. 2 and FIG. 3, the linear feeder LF includes: a base 2 fixed on the ground, a movable part 3 arranged above the base 2, a fixed part 4 arranged above the movable part 3, A selection groove 5 is arranged above the fixed portion 4 so as to follow the conveyance direction X in which the workpiece is conveyed. The fixed portion 4 is supported with respect to the base 2 by a pair of anti-vibration springs 6 and 6 which are leaf springs. The anti-vibration spring 6 is fixed to the side surface of the base 2 through the fastening bolt 2a at the lower end, and is fixed to the side surface of the fixing portion 4 at the upper end through the fastening bolt 4a. Here, the pair of anti-vibration springs 6 and 6 are mounted in parallel on both sides of the anti-vibration spring mounting portion 6a, and the inclination angle adjustment mechanism of the spring mounting portion 6a prevents the inclination angle of the spring mounting portion 6a in the conveyance direction X with respect to the vertical direction. In the changed state, it is fixed to the base 2 and the fixing part 4 .

The movable part 3 and the fixed part 4 are connected by a pair of drive springs 7 and 7 under the leaf spring at two points in the front-rear direction. A pair of drive springs 7 and 7 are fixed to the front-rear direction end face of the movable portion 3 at the lower end through a fastening bolt 3a, and are fixed to the front-rear direction end face of the fixed portion 4 at the upper end through a fastening bolt 4c. Here, the pair of drive springs 7 and 7 are fixed to the movable portion 3 and the fixed portion 4 so as to be inclined to the conveyance direction X with respect to the vertical direction so as to be substantially parallel to each other.

Moreover, between the movable part 3 and the fixed part 4 connected by the drive springs 7 and 7, the vibrating body 8 which mutually vibrates is provided. The vibrating body 8 is provided with a driving source such as a solenoid, a piezoelectric element, and the like, and mainly generates relative vibration in the horizontal direction between the vibrating base and the vibrating end (not shown), and one of the vibrating base and the vibrating end is fixed to the movable portion 3 . , and the other is fixed to the fixed portion 4 so that the movable portion 3 and the fixed portion 4 can vibrate relative to each other.

In addition, the selection groove 5 is connected to a block-shaped selection groove support base 11 arranged above the fixing portion 4 through a connecting plate (connecting structure material) 10 . The selection groove 5 is mounted on the selection groove support table 11 and vibrates in synchronization with the movable part 3 . For this reason, the connection plate 10 is connected to the selection groove 5 by the fastening bolt 10a, and is connected to the movable part 3 by the connection bolt 10b.

The vibrating body 8 , the driving spring 7 , the fixed portion 4 , the movable portion 3 , the connecting plate 10 , and the selection groove support base 11 constitute a drive mechanism DM for imparting an oblique vibration to the selection groove 5 .

Next, the main function of the linear feeder LF will be described. In a state where the linear feeder LF is fixed to the ground, the workpiece is placed on the upper surface of the selection groove 5 set substantially horizontal. In this state, the vibrating body 8 is vibrated, so that the movable part 3 and the fixed part 4 vibrate. Here, the drive springs 7 and 7 connected to the movable portion 3 and the fixed portion 4 are inclined with respect to the vertical direction with respect to the conveyance direction X, so that the components of the conveyance direction X have a vertical direction perpendicular to the conveyance direction X according to the inclination angle. components vibrate. Then, the vibration is transmitted to the selection groove 5 via the connecting plate 10 , and from the selection groove 5 to the workpiece, so that the workpiece is conveyed on the upper surface of the selection groove 5 . at this time, The position of the center of gravity of the fixed portion 4 exists in the vicinity of the approximate center of the fixed portion 4 . In addition, the center of gravity of the movable part 3, the center of gravity of the connecting plate 10 that vibrates integrally with the movable part 3, and the center of gravity of the selection groove 5 are combined to make the movable part 3 and the groove 5 straddle the fixed part 4. It is integrated so as to be in the vicinity of the center of gravity of the fixed portion 4 . Therefore, the vibrations of the two are eliminated, so that the vibrations transmitted to the base 2 and the ground can be effectively attenuated by interacting with the action of the anti-vibration spring 6 .

The selection groove 5 is provided with a selection mechanism for removing workpieces that do not meet the predetermined conditions, specifically, workpieces with an improper posture from the selection groove 5 toward the return groove 105 through air injection.

With such a basic configuration, the linear feeder LF has a protruding shape ( protruding area OH). Therefore, the same vibration is not necessarily obtained on the transport source side and the transport destination side. Specifically, even if necessary vibration occurs on the conveyance source side close to the vibrating body 8 , the protruding area OH on the conveyance destination side is cantilevered, so that, for example, a front-swing-like rotation may occur, and so-called pitching may occur. such a phenomenon. As a result, such a defect may be caused that the transport efficiency of the workpiece at the tip portion may be lowered.

Specifically, the downstream side in the conveying direction of the groove support base 11 is selected to protrude in the conveying direction from the front end surface 10x of the connecting plate 10, and a half portion of the bird's beak-shaped top end chute member 5x is attached to the protruding portion 11x. The distal end side of the chute member 5x is arranged so as to extend from the protruding portion 11x toward the distal end side. The state of being suspended in a cantilever manner. That is, the top end chute member 5x is integrally supported by the selection groove support base 11 together with the selection groove 5, and vibrates integrally. The purpose of providing the protruding portion 11x is to ensure as much as possible the support range of the tip chute member 5x.

The aligning grooves 5 constituting the chute and the top chute member 5x have such an integral structure, so even if the inherent value is increased in order to cope with the pitching in the protruding region OH, etc., it is still impossible to reduce the weight of each conveying part, Adjustment of vibration characteristics, etc., if a mechanism for adjusting the vibration characteristics according to the conveying position is provided separately, the overall size of the device will increase unnecessarily, or there may be undesired vibration characteristics due to an increase in mass, and the desired performance may not be achieved. of transportation.

Therefore, the present embodiment adopts the configuration shown in FIGS. 5 to 8 . FIG. 5 is a left side view corresponding to FIG. 2 , FIG. 6 is a right side view corresponding to FIG. 3 , FIG. 7 is a plan view of FIG. 5 , and FIG. Drawn floor plan.

This linear feeder LF is the same as that of FIGS. 1 to 4 except that the inclined table 1 is provided under the base 2 constituting the linear feeder LF of FIGS. 1 to 4 to incline the entire conveyance path. Then, in the case where the area supported by the selection groove support table 11 is the first area A1 and the area suspended therefrom is the second area A2, the first area is constituted by the main chute 105 and the top end chute 105x is constituted Zone 2.

Then, these are arranged in a separated state with a small gap, the tip chute 105x is supported by the non-active support mechanism 200, and the first area A1 is connected to the second area A2.

Specifically, the main chute support table 111 supporting the main chute 105 corresponds to the shape of the selection groove support table 11 supporting the selection groove 5 of FIGS. 1 to 4 to eliminate the protrusion 11x, just like the selection groove The support table 11 transmits the vibration of the vibration source through the aforementioned drive mechanism DM.

On the other hand, the inactive support mechanism 200 has a structure including a pair of second leaf springs (support leaf springs) 201 and 201 provided on the distal end side and the proximal end side of the second area A2 along the conveyance direction. , the base end side of the second leaf springs 201 is supported on the base 2 via the lower side variable support portion 203 , and the upper end side is supported under the top chute support platform 111x via the upper side variable support portion 204 . The lower side variable support mechanism 203 is configured such that an arc-shaped swing member 231 having a spring attachment portion is swingably disposed, and the swing member 231 is engaged with the long hole 233a of the swing support portion 233 via a pin 232. The rocking support portion 233 rotates around the fulcrum m, so that the rocking member 231 performs a rocking motion. On the other hand, the upper variable support mechanism 204 arranges the rotating member 241 so as to be in contact with the tapered surface 204a, and the upper end of the second leaf spring 201 is fixed to a part of the rotating member 241. The rocking center of the rocking member 231 coincides with the center n of the rotating member 241 .

That is, the inclination angle of the second leaf spring 201 can be changed according to the rocking position of the rocking member 231, thereby constituting the angle adjustment mechanism UV of the present invention.

Then, in the state of FIG. 8 in which the main chute 105 and the top chute 105x are removed, the first leaf spring 300 is erected on the main chute support table 111 and the top chute support table 111x shown above, and will be connected with the first plate spring 300. Each end of the leaf spring 300 The corresponding support stands 111 and 111x are connected by fixing tools V such as bolts, and the main chute 111 and the top chute 111x are fitted thereon, thereby completing the installation of the first leaf spring 300 .

In this way, the vibration in the extending direction of the first area A1 among the vibrations of the first area A1 excited by the vibration source can be transmitted to the second area A2 via the first leaf spring 300 . When the first area A1 vibrates in the extending direction of the main chute 105 , the second area A2 is supported by the second leaf spring 201 , which is converted into an oblique vibration here, which is converted into the spring characteristic and the second leaf spring 201 . The oblique vibration corresponding to the installation angle. That is, the linear feeder unit system converts the vibration in the conveying direction of the vibrating body 8 into the oblique vibration of the main chute 105 through the drive spring 7, so the same action is also realized in the top chute 105x.

FIG. 9 shows a configuration example of the first leaf spring 300 . The first leaf spring 300 is a substantially rectangular thin-plate link leaf spring with the extension direction X as the longitudinal direction, and the dimension in the thickness direction Z is thin with respect to the longitudinal direction, so the oblique vibration of the first region A is Only the longitudinal direction component is transmitted from the first area A1 to the second area A2. Therefore, the driving force of the driving source 8 for driving the first area A is transmitted to the front end chute 105x divided from the main chute 105 through the first leaf spring 300 serving as the thin-plate-shaped linking leaf spring.

In this case, since the side of the main chute 105 and the side of the top chute 105x are driven in the same phase, the influence of vibration in one chute is not transmitted to the other.

Therefore, the rotation frequency in the pitch direction is reduced, and linear vibration can be generated in the second area A2, and at the same time, the divided main chute 105 can be connected to the top. There is a small gap between the end runners 105x, and the structure can be substantially the same as that of the conventional one-piece type. Furthermore, it is possible to drive in the same phase, so that the vibration conveying conditions of the main chute 105 and the top chute 105x can be appropriately adjusted, and the balance of the conveying speed of the workpiece can also be controlled.

In the structures of FIGS. 5 to 8 , although the top chute 105x is slightly more protruding than the non-active support mechanism 200 in a necessary range, the non-active support mechanism 200 can be as close to the top of the top chute as possible. ~ The configuration of Figure 4 makes it easy to ensure an appropriate support state, and the degree of freedom of design is also improved.

As described above, the linear feeder LF serving as a component supply device according to the present embodiment includes the following: the vibrating body 8 which imparts predetermined vibration for conveying the work to the workpiece; and the first area A1 which is formed by the vibrating body The vibration caused by 8 conveys the workpiece from the conveying source; the second area A2 is connected to the first area A1 from the base end side, and the workpiece conveyed from the first area A1 is further conveyed to the distal side; not The active support mechanism 200 supports at least the front end side of the second area A2 along the conveying direction so as to be able to vibrate independently, and the vibration transmission part (the first leaf spring 300 ) is provided with the first area A1 and the second area A1. The area A2 has a different shape, and transmits the vibration of the first area A1 by the vibrating body 8 to the second area A2.

In this way, the vibration characteristics of the second region A2 can be separately set by the configuration of the non-active support mechanism 200 and the vibration transmission portion (the first leaf spring 300 ). In addition, since at least the distal end side of the second area A2 is supported by the non-active support mechanism 200, such a pitching phenomenon that rotates like a forward swing can be appropriately suppressed. As a result, even in high-speed conveyance, an appropriate workpiece conveyance efficiency can be realized at the front end portion. And, the non-active support mechanism 200 There is no need for a vibration source, so there is no complication or enlargement of the structure.

Specifically, the first area A1 and the second area A2 are separated, and the vibration transmission portion is formed of the first leaf spring 300 connecting the first area A1 and the second area A2, so the second area A2 is opposed to If independent vibration is easily generated in the first area A1, the vibration transmission from the first area A1 to the second area A2 can be smoothly performed through the first leaf spring 300 reasonably.

In particular, since the non-active support mechanism 200 of this embodiment includes a pair of second leaf springs 201 provided on the distal end side and the base end side of the second area A2 along the conveying direction, the second leaf springs 201 can pass through the pair of second leaf springs 201. The posture during vibration in the second area A2 is further stabilized.

Furthermore, the angle adjustment mechanism UV for adjusting the vibration characteristics of the second area A2 by changing the angle of the second leaf spring 201 is further provided, so that the angle of the second area A2 can be adjusted appropriately according to the relationship with the component supply destination. Vibration characteristics.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the structure of the said embodiment.

For example, as in the non-active support mechanism 200' shown in Fig. 10 , a single second leaf spring 201' may be provided on the distal end side of the second area A2 along the conveyance direction. With such a configuration, the functions and effects of the above-described embodiments can be exhibited, and further simplification of the structure can be achieved. In this case, the vibration characteristics can also be changed as appropriate through the angle adjustment mechanism UV'.

Furthermore, as shown in FIG. 11 , in the second area A2, different second areas A2' may be further connected via different vibration transmission parts (first leaf springs 300'). It is made so that it is possible to make it possible to The vibration characteristics of the regions A1, A2, and A2' vary in multiple steps.

In addition, even if the first area and the second area are not physically separated, for example, even if the chute as a structure is integrated, a part of the chute can be drilled or thinned in a range that does not affect the conveyance, and an elastic portion can be provided. , so that the two sides of the elastic portion are the first region and the second region.

Various modifications can be made to other structures without departing from the gist of the present invention.

1‧‧‧Tilt table

3a‧‧‧ Fastening bolts

4c‧‧‧ Fastening bolts

6‧‧‧Anti-vibration spring

7‧‧‧Drive spring

10‧‧‧Link board

105‧‧‧Main Chute

105x‧‧‧Top chute

200‧‧‧Non-active support mechanism

201‧‧‧Vibration transmission part (2nd leaf spring)

204‧‧‧Upside variable support mechanism

204a‧‧‧Conical

232‧‧‧pins

233‧‧‧Swing support

233a‧‧‧Slot hole

241‧‧‧Rotating member

A1‧‧‧First area

A2‧‧‧Second area

n‧‧‧Center

m‧‧‧ fulcrum

UV‧‧‧angle adjustment mechanism

Claims (4)

A component supply device comprising: a vibrating body for imparting predetermined vibration to a workpiece for conveying the workpiece; a first area for conveying the workpiece from a conveying source by the vibration generated by the vibrating body; and a second area for conveying the workpiece from a conveying source The base end side is connected to the first area, and the workpiece conveyed from the first area is further conveyed toward the distal end side; the non-active support mechanism supports at least the distal end side of the second area along the conveying direction. In order to be able to vibrate independently; and a vibration transmission part, which is set as a different shape from the first area and the second area, and transmits the vibration of the first area caused by the vibrating body to the second area; the non-active type The supporting mechanism is a pair of supporting leaf springs provided on the distal end side and the proximal end side of the second region along the conveyance direction. The component supply device according to claim 1, wherein the first area and the second area are separated, and the vibration transmission portion is a transmission plate spring that connects the first area and the second area. The component supply device according to claim 1 or 2, further comprising an angle adjustment mechanism for adjusting the vibration characteristics of the second region by changing the angle of the support leaf spring. The component supply device according to claim 1 or 2, wherein different second regions are further connected to the second region via different vibration transmission parts.

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