KR100371305B1 - Feeder for chip components - Google Patents

Abstract

According to the present invention, a chip component supplying device capable of supplying chip components very stably even at high speeds by operating the transport member at a speed lower than the speed of the chip mounter and by operating the transport member even when the chip mounter stops Is provided. In order to drive the belt connected to the feed lever intermittently in one direction via the transfer mechanism, the chip component on the belt is fed in one direction by lowering the feed lever in accordance with the input load from the chip mounter. By storing the input load of the chip mounter as energy, a propulsion means is provided to propel the feed lever in the return direction, and an eddy current damper is provided to delay the return operation of the feed lever with respect to the return operation of the chip mounter. When the chip mounter operates in the downward direction, the feed lever is moved downward by connecting to the chip mounter, and the conveyor belt is kept stationary. When the chip mounter operates in the upward direction, the feed lever is moved upwards to be delayed with respect to the chip mounter by the eddy current damper, and the belt is driven at a low speed.

Description

Feeder for chip components

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supply device for chip components, and more particularly, to a supply device for intermittently supplying chip components in one direction by using a driving force of a chip mounter.

Up to now, the belts, which are vertically moved by the vertically moving pipe connected to the operation of the chip mounter, allow the chip parts accommodated in the hopper to be seamless from the discharge hole at the bottom of the hopper one by one. The chip part supplying device which falls to the endless belt and which intermittently drives the belt forward by a belt driving mechanism, selects the chip parts conveyed to the end of the belt one by one by the chip mounter. It is known (see, for example, Japanese Patent Laid-Open No. 8-4819).

In the above-described supply apparatus, the pipe for dropping the chip component of the hopper from the discharge hole is operated up and down by a drive lever pushed downward by the chip mounter, and the belt drive mechanism is synchronized with the chip mounter. The belt drive pulley is intermittently operated via a ratchet claw by a drive lever that rotates by means of retracting means moving in a similar manner. By utilizing the input load of the chip mounter the chip components are picked up from the hopper onto the belt and the chip components are transported intermittently by the belt, so that the feeding device does not require a separate driving source, There is an advantage that the synchronization between chip mounters can be easily obtained.

Recently, in this type of supply device, a high supply capacity is required, and a supply device having a capacity of 0.1 second or less per one part has been put to practical use. When the chip parts are supplied in such a short time, a problem arises that the chip parts cannot be supplied in a stable state because the chip parts bounce and slide on the belt. The reason for this will be described with reference to FIGS. 1A to 1C.

1A and 1B show an example of the operation of a belt and chip mounter for driving such a supply device.

As shown in FIG. 1A, the chip mounter starts descent at time t ₁ and reaches a bottom dead center at time t ₂ . During the time t ₂ to t ₃ , the chip mounter stops and the first chip component transported to the belt is sucked. At time t _3, the chip mounter is initiated, and the time t ₄ and from reaching the top dead center. Time t ₄ ~ t ₅ during, moving the suction nozzle (suction nozzle), and the direction of the chip component recognition rise (ascent) The chip component adsorbed is mounted on a circuit board or the like.

On the other hand, as shown in Fig. 1B, since the belt is driven synchronously with the rise of the chip mounter, the belt is driven forward only during the time Δt _a (t ₃ to t ₄ ) when the chip mounter rises, and the rest Stop in time.

In the high speed operation having a tact time of 0.1 second as described above, the belt driving time Δt _a should be smaller in proportion to the tact time. Therefore, the belt must be driven at high speed, and as a result, the friction force between the chip component and the belt is not effectively applied. Therefore, since the chip parts spring up and slip on the belt, the chip parts cannot be supplied in a stable state.

Accordingly, an object of the present invention is to provide a chip component supplying device capable of supplying a chip component in a stable state even at a high speed operation by operating the transport section at a lower speed than the operating speed of the chip mounter even when the chip mounter is stopped.

1A-1C are time charts comparing the operation of a conventional supply device with the operation of a supply device according to the invention.

2 is a side view of the supply apparatus according to the first embodiment of the present invention.

3 is a cross-sectional view taken along the line X-X of FIG. 2.

4 is a side view when the supply device of FIG. 2 is lowered.

FIG. 5 is a side view when the supply device of FIG. 2 is at the bottom dead center. FIG.

6 is a side view when the supply device of FIG. 2 rises.

7 is a side view of the supply apparatus according to the second embodiment of the present invention.

8 is a side view when the supply device of FIG. 7 is lowered.

FIG. 9 is a side view when the supply apparatus of FIG. 7 is at the bottom dead center. FIG.

10 is a side view when the supply device of FIG. 7 is raised.

11A-11C are time charts comparing the operation of the supply apparatus without a delay mechanism with the operation of the supply apparatus in FIG. 7 with the delay mechanism.

12 is a side view of a supply apparatus according to a third embodiment of the present invention.

FIG. 13 is a side view when the supply device of FIG. 12 is lowered. FIG.

FIG. 14 is a side view when the supply apparatus of FIG. 12 is at the bottom dead center. FIG.

FIG. 15 is a side view when the supply device of FIG. 12 is raised.

16A-16C are time charts comparing the operation of the supply apparatus without the delay mechanism with the operation of the supply apparatus with FIG. 12 with the delay mechanism.

17 is a side view of a supply apparatus according to a fourth embodiment of the present invention.

18 is a cross-sectional view taken along the line Y-Y of FIG. 17.

19A to 19D are operating principle diagrams of the hysteresis brake.

In order to achieve the above object, according to the first aspect of the present invention, a conveyor connected to the feed lever via a feed lever and a one-way feeding mechanism operated according to the input load of the chip mounter. A supply device including a conveyor belt and intermittently driving a conveyor belt in one direction to supply chip parts of the conveyor belt in one direction, wherein the supply device of the chip parts is in the operating direction of the chip mounter. Urging means for pushing the feed lever in the returning direction by storing the input load as energy; And a delaying mechanism for delaying the return operation of the feed lever with respect to the operation in the return direction of the chip mounter, wherein when the chip mounter operates in the operation direction, the feed lever is operated by being connected to the chip mounter. Direction, the conveyor belt is held stationary by the one-way feed mechanism, and when the chip mounter operates in the return direction, the feed lever is moved by the propulsion means and the delay mechanism in the return direction such that it is delayed with respect to the chip mounter. In addition, the conveyor belt provides a supply device for the chip component, characterized in that driven through the one-way supply mechanism.

The supply device for the chip component according to the first aspect of the present invention will be described with reference to FIG. 1C.

In the present feeding apparatus, when the chip mounter is operated (t ₁ to t ₂ ), the belt stops, and when the chip mounter returns (t ₃ to t ₄ ), the belt is driven; However, the belt is out of synchronization with the return operation of the chip mounter due to the delay mechanism, and continues to be driven at a low speed even after the chip mounter reaches the top dead center. Therefore, the belt drive time Δt _b (t ₃ to t ₆ ) can be extended in comparison with the conventional drive time Δt _a (t ₃ to t ₄ ), so that the belt is driven at low speed for the same supply amount. Can be. Therefore, the friction force between the belt and the chip component is effectively applied, and the chip component can be supplied with high stability even at high speed operation.

In particular, in the present supply apparatus, the belt is not driven by the input load of the chip mounter, but by the energy stored in the propulsion means when the chip mounter returns. Therefore, the belt can be driven at a low speed without being restricted by the operation of the chip mounter.

The belt drive termination time t ₆ may be at any time, as long as it is before the next descent start time t ₅ , and, eventually, the belt drive for as long as possible within the time range of t ₃ to t ₅ . Time can be secured. The operating speed of the belt can be adjusted by the delay mechanism.

As the delay mechanism, a known delay mechanism such as an eddy current damper, a damper using the viscosity of the fluid, and an air damper can be used. The position at which the delay mechanism is provided is not limited to the feed lever portion, and can be disposed near the one-way feed mechanism or the drive portion of the belt.

As an operating characteristic of the delay mechanism, a resistive force can be applied to the actuation direction and the return direction of the feed lever, or can be applied only to the return direction without being applied to the actuation direction.

As the propulsion means, means for storing elastic energy such as a spring and means for storing potential energy such as weight can be used.

In a second aspect of the invention, a reciprocating conveying member is used instead of the belt of the first aspect. That is, according to the second aspect, it comprises a transport member connected to the feed lever via a feed lever and a transfer mechanism that is operated according to the input load of the chip mounter, and by using the friction force by reciprocating the transport member to remove the chip component on the transport member A supply apparatus for supplying in one direction, the supply apparatus of the chip component comprising: propulsion means for pushing the feed lever in the return direction by storing an input load in the operating direction of the chip mounter as energy; And a delay mechanism for delaying the return operation of the feed lever with respect to the operation in the return direction of the chip mounter, wherein when the chip mounter operates in the operation direction, the feed lever is connected to the chip mounter and moves in the operation direction. The chip parts are slid relative to the transport member by retracting the transport member at high speed through the transmission mechanism, and when the chip mounter operates in the return direction, the feed lever moves in the return direction to be delayed with respect to the chip mounter by the delay mechanism. In addition, the chip parts are supplied integrally with the transport member by advancing the transport member at a low speed via a delivery mechanism.

When the chip mounter operates in the operating direction and thus the feed lever operates, the transport member retracts at high speed via the delivery mechanism. Thereby, the frictional force hardly acts on the chip part on the transport member, so that the chip parts maintain their position, and only the transport member retreats. Next, when the chip mounter operates in the return direction, the feed lever returns to operate later than the chip mounter due to the delay mechanism. Therefore, the transport member connected thereto via the delivery mechanism also advances at a slower speed than the chip mounter. Thus, the frictional force acts on the chip part on the transport member, and eventually the chip part also moves forward integrally with the transport member.

Due to the delay mechanism, the forward time of the transport member can be extended up to just before the start time of the next operation of the chip mounter, so that the drive time of the transport member can be secured for as long as possible. Therefore, the transport member can be advanced at low speed, so that the chip parts can be supplied with high stability even at high speed operation.

Preferably, the delivery mechanism includes a cam that intermittently rotates in one direction in accordance with the operation of the feed lever and a spring that comes in contact with the surface of cam behind the cam. With this feature, when the chip mounter operates in the operating direction, the cam rotates via the feed lever so that the transport member falls from the peak portion to the valley portion. As a result, the transport member retracts at high speed. When the chip mounter operates in the return direction, the transport member rises from the bend of the cam to the vertex, whereby the transport member advances at low speed. The forward speed of the transport member is reduced by the shape of the cam and the action of the delay mechanism so that the friction force between the transport member and the chip parts is sufficiently applied, and consequently, the chip parts are supplied without slipping.

The delivery mechanism preferably includes a bell crank rotatably connected to the feed lever and the conveying member on an arm portion protruding on both sides of the swinging shaft. With this feature, when both the feed lever and the conveying member are connected via the bell crank, the feed lever and the conveying member operate synchronously with each other. At this time, by operating the feed lever at a high speed in the operating direction and at a low speed in the return direction due to the delay mechanism, the transport member can be retracted at high speed and advanced at a low speed.

Preferably, the delay mechanism is an eddy current damper. In the eddy current damper, as is generally known, a conductive member is arranged to face a magnetic flux generating means (e.g. a magnet), and one of the magnetic flux generating means and the conductor is in a vertical direction in the opposite direction. It is movable with respect to the other one. Since the eddy current induced in the conductor is generated in the direction of disturbing the change in the magnetic flux, the resistive force is applied to the movable member by the eddy current, and as the displacement speed of the movable member is increased, a larger resistive force is applied. That is, a load proportional to the speed is obtained from the eddy current damper, and the acceleration is stopped at the speed determined by the relationship with the spring force. Therefore, in high speed operation, transportation can be reliably realized. For example, when an eddy current damper is disposed between a feed lever and a fixed portion, if the feed lever moves in any direction, a resistive force acts on the feed lever to prevent movement in that direction. Since the driving force in the operating direction of the feed lever is given by the chip mounter, even when a resistive force is applied, the feed lever moves together with the chip mounter without being disturbed by the resistive force. On the contrary, since the driving force in the return direction of the feed lever is given by the pushing means, the pushing force by the pushing means is suppressed by the eddy current damper, and the feed lever can return to a low speed. Since the eddy current damper does not have a sliding portion, there is an advantage that the characteristic does not change even when used for a long time.

Preferably, the delay mechanism is a hysteresis brake. The hysteresis brake is arranged so as to oppose the composite poles and composite poles in which the N and S poles of the magnets are alternately arranged, and in the opposite direction and the vertical direction, respectively. It includes a magnetic body that is movable to generate a brake force that takes advantage of the hysteresis loss of the magnetic body. Unlike the eddy current damper, the brake force of the hysteresis brake is not dependent on speed. In addition, the hysteresis brake has an advantage that the brake force can be easily obtained even at low speed operation. When the hysteresis brake is disposed between the feed lever and the fixing portion, for example, sufficient brake force can be obtained even at low speed operation of the feed lever, and the delay operation can be reliably realized. In addition, since the hysteresis brake also does not have a slip, its characteristics do not change even when used for a long time.

Preferably, the hysteresis brake adds the function as an eddy current damper by forming all or part of the magnetic material forming the hysteresis brake from the conductive material. The hysteresis brake does not depend on speed as described above. And, when it is used as a single substance, the feed lever may continue to accelerate, and it may be difficult to control the speed and suppress the occurrence of shock and noise at top dead center. Therefore, by adding a function as an eddy current damper to the hysteresis brake, it is possible to supply chip components having high stability for all operations from low speed to high speed.

2 to 6 show a first embodiment of a chip component supply apparatus according to the present invention. In addition, in this embodiment, as the chip component P, rectangular chip electronic components having electrodes at both ends are used. .

This feeding device comprises a feed lever 1 and a spring 2 for pushing the feed lever 1 back in the upward direction. The feed lever 1 is movably supported in the vertical direction via the link 3 and the bell crank 4 by the supply device body. In the upper part of the supply apparatus 1, the mounter lever A of a chip mounter is arrange | positioned. The mounter lever A is vertically moved in the range of a predetermined stroke by being connected to the operation of the chip mounter. Therefore, the feed lever 1 is pushed downward by the mounter lever A. As shown in FIG.

The lower end of the feed lever 1 is connected to the link 5 via a bell crank 4 and, moreover, to a swing plate attached coaxially with the drive pulley 10. The bell crank 4 is slidably arranged in the feeder body using the shaft 4a as a support point. The ends of the two arm portions of the bell crank 4 are connected to the lower end of the feed lever 1 and the link 5 via pins 4a and 4c, respectively. A feed claw 7 which engages with the drive pulley 10 is attached to the swing plate 6 to rotate the drive pulley 10 in only one direction by swinging the swing plate 6.

The seamless conveyor belt 12 is wound between the drive pulley 10 and the driven pulley 11. In the belt 12, a plurality of chip parts P are arranged in a row. By the vertical movement of the feed lever 1, the drive pulley 10 rotates only in the counterclockwise direction via the feed claw 7, and the chip component P can be advanced intermittently by 1 increment at a time.

On the side of the feed lever 1, an eddy current damper 8, which is an example of a delay mechanism, is provided. The eddy current damper 8 is arranged at the feed lever 1 and has a yoke 8a having a U-shaped cross section, a magnet 8b attached to the yoke 8a and an opening of the yoke 8a fixed to the main body of the supply apparatus (8a). a residual conductor plate 8c movable in the opening. The magnetic field generated in the yoke 8a acts in a direction perpendicular to the conductor plate 8c. In this embodiment, the yoke 8a is disposed on the feed lever 1, and the residual conductor plate 8c is fixed to the supply apparatus body; However, the yoke 8a may be arranged in the supply apparatus main body, and the residual conductor plate 8c may be fixed to the feed lever 1.

In addition, the cross section of the yoke 8a may not necessarily be a rectangular shape, and may be a rectangle (flat plate shape).

Due to the action of the eddy current damper 8, when the feed lever 1 (yoke 8a) moves downward, a resistive force that impedes movement in the downward direction acts on the feed lever 1. On the contrary, when moving in the upward direction, a resistive force that impedes movement in the upward direction acts on the feed lever 1. Since the driving force for moving the feed lever 1 downward is generated by the mounter lever A, even when the resistance force of the eddy current damper 8 acts on it, the feed lever 1 is not disturbed by the resistance force and the mounter lever ( Move down with A). However, since the driving force for moving the feed lever 1 upward is generated by the spring 2, the driving force of the spring 2 is suppressed by the eddy current damper 8, so that the feed lever 1 rises at low speed. do.

Next, the operation of the supply apparatus will be described with reference to FIGS. 2, 4, 5 and 7. FIG.

2 shows a state where the mount lever A is at the top dead center, and the feed lever 1 also stops at the position in contact with the mount lever A. FIG.

When the mounter lever A descends from the state of FIG. 2, the feed lever 1 also descends synchronously with the mounter lever A (see FIG. 4). At this time, the spring 2 is deformed under tension and stores the input energy of the mounter lever A as elastic energy. At the same time, the feed claw 7 revolves clockwise around the drive pulley 10 by means of the bell crank 4, the link 5 and the swinging plate 6. Therefore, the conveyor belt 12 stops.

5 shows a state where the mount lever A is stopped at the bottom dead center. In this state, the suction nozzle B provided to the mounter sucks the leading part P ₁ on the belt 12. As shown in FIG. 6, when the mounter lever A starts to rise, after the suction nozzle B lifts the leading part P ₁ , the feed lever 1 is elastically stored in the spring 2. Rise by energy. When the feed lever 1 is raised, the drive pulley 10 is driven counterclockwise by the feed claw 7, so that the conveyor belt 12 is fed forward by 1 increment. Therefore, the chip component on the belt 12 is also supplied by one increment, and the second chip component P ₂ reaches the adsorption position.

When the feed lever 1 is raised, due to the function of the eddy current damper 8, the brake force acts on it, as shown by the broken arrow. Therefore, while gradually releasing the elastic energy stored in the spring 2, the rising speed of the feed lever 1 and the feeding speed of the conveyor belt 12 are suppressed at a low speed. Therefore, when the mount lever A reaches top dead center, the feed lever 1 continues to ascend. That is, even when no load is input from the chip mounter stopped at the top dead center, the feed lever 1 continues to operate, and the belt 12 connected thereto also continues to supply.

The operation of the conveyor belt 12 accompanying the operation of the mounter lever A is shown in FIG. 1C. Since the drive time t _b of the conveyor belt 12 can be extended due to the function of the delay mechanism (eddy current damper 8), the belt 12 can be driven at a low speed with respect to the same supply amount. Thereby, the chip component P on the belt 12 can be supplied in a stable state without jumping or slipping.

In addition, in the present embodiment, the spring 2 is deformed to store energy while the feed lever 1 is lowered, and the stored energy is released while rising; However, the operation may be performed in reverse.

With respect to the spring 2, it is not limited to an extension spring; It may be a compression spring or, moreover, may be a leaf spring or a torsion spring instead of a coil spring. Thus, the fixed position of the spring 2 is not limited to the side of the feed lever 1; It may be the shaft portion of the bell crank 4 or the side of the rocking plate 6.

7 to 10 show a chip component supply apparatus according to a second embodiment of the present invention. In this embodiment, as the transport member, a blade for reciprocating in the front-rear direction is used instead of the belt of the first embodiment.

In addition, the component which has the same function as the case of FIG. 2 is attached | subjected with the same code | symbol, and duplication description is abbreviate | omitted.

The lower end of the feed lever 1 is connected to the blade 21 via a bell crank 20. The bell crank 20 is slidably arranged in the feeder body using the shaft 20a as a support point. The tips of the two arm portions of the bell crank 20 are connected to the lower end of the feed lever 1 and the blade 21 via pins 20b and 20c, respectively. Therefore, the vertical movement of the feed lever 1 is converted into the front-rear reciprocating motion of the blade 21. The blades 21 are movably guided in the horizontal direction, and the chip parts P are arranged in a row thereon. In addition, although not shown in the drawing, the blade 21 forms a lower portion of a guide groove for aligning the chip parts P in a row.

The operation of the supply apparatus according to the above-described embodiment will be described with reference to FIGS. 7 to 10.

7 shows a state where the mount lever A is at the top dead center, and the feed lever 1 is also in the contact position with the mount lever A. FIG. Since the feed lever 1 is in the upper position, the blade 21 connected via the bell crank 20 is in the shear position.

8 shows a state in which the mounter lever A has started lowering, and the feed lever 1 also descends synchronously with the mounter lever A. FIG. At this time, the spring 2 is deformed under tension and stores the input energy of the mounter lever A as elastic energy.

At the same time, the blade 21 retreats at a high speed via the bell crank 20, and a slip occurs between the blade 21 and the chip component P, and the blade is maintained with the chip component P in its position. Only 21 retreats.

9 shows a state where the mount lever A is stopped at the bottom dead center. At this time, the chip component P is located near the front end position of the blade 21.

When the mount lever A starts to rise from the bottom dead center, as shown in FIG. 10, the feed lever 1 is raised by the elastic energy (spring force) stored in the spring 2. When the feed lever 1 is raised, the blade 21 advances via the bell crank 20. At this time, due to the action of the delay mechanism (eddy current damper 8), the rising speed of the feed lever 1 is suppressed at low speed, and the forward speed of the blade 21 is also suppressed at low speed. That is, by advancing the blade 21 at low speed, the entire chip part P moves forward by one increment due to the frictional force of the blade 21. When the chip component P is moved to the shear position, the leading component can be sucked by the suction nozzle (not shown).

11A to 11C show the operation of the mounter lever A and the blade 21 of the supply apparatus shown in FIG. 7. 11B shows the operation of the blade 21 without the delay mechanism (eddy current damper 8).

When the blade 21 does not have a delay mechanism, as shown in Fig. 11B, since the blade 21 is moved synchronously with the rise of the mounter lever A, the advancing time Δt _a of the blade 21 Is short, a slip may occur between the blade 21 and the chip component P. On the contrary, when the delay mechanism 8 is provided, as shown in Fig. 11C, the blade 21 advances out of synchronization with the raising of the mounter lever A, so that the advance time? t _b can be extended so that a frictional force between the chip component P and the blade 21 is sufficiently applied. Therefore, the chip component P can be supplied in a stable state.

12 to 15 show a chip component supply apparatus according to a third embodiment of the present invention. In this embodiment, as in the second embodiment, the blade 21 is used as the conveying member; However, in order to reciprocate the blade 21, a cam mechanism is used. The feed lever 1 is guided so as to be movable in the vertical direction by the guide portion 29 disposed in the main body of the supply apparatus.

In addition, the same code | symbol is attached | subjected about the part which has the same function as the case of FIG. 7, and the description is abbreviate | omitted.

The blade 21 is generally pushed back by the spring 22, whereby the projection 21a disposed at the rear end of the blade 21 is in contact with the main surface of the cam 23. A ratchet gear (not shown) is in contact with the cam 23 on the same axis, and the pair of feed claws 24 and 25 disposed at the lower end of the feed lever 1 is the cam 23. Is engaged with the ratchet gear only to intermittently rotate it counterclockwise.

The operation of this supply device will be described with reference to FIGS. 12 to 15.

12 shows a state where the mounter lever A is at the top dead center, and the feed lever 1 is also in the upper position where it is in contact with the mounter lever A. FIG. The projection 21a at the rear end of the blade 21 is in contact with the apex of the cam 23, and the blade 21 is at the front end.

13 shows a state in which the mounter lever A is lowered, and the feed lever 1 is also lowered in synchronism with the mounter lever A. FIG. At this time, the spring 2 is deformed under tension and stores the input energy of the mounter lever A as elastic energy. At the same time, the front feed claw 24 rotates the cam 23 (ratchet gear) counterclockwise, so that the projection 21a of the rear end of the blade 21 falls to the curved portion of the cam 23, thereby The blade 21 retreats at high speed. Therefore, slippage occurs between the blade 21 and the chip component P, so that only the blade 21 retreats while the chip component P maintains its position.

Fig. 14 shows a state where the mount lever A is stopped at the bottom dead center. At this time, the blade 21 is in the rear end position, and the chip component P is positioned in the vicinity of the front end position of the blade 21.

When the mount lever A starts to rise, the feed lever 1 is raised by the elastic energy stored in the spring 2, as shown in FIG. When the feed lever 1 is raised, the rear feed claw 25 rotates the cam 23 (ratchet gear) counterclockwise, so that the projection 21a of the rear end of the blade 21 is the cam 23. Ride from the bend to the vertex. Thereby, the blade 21 advances at low speed. At this time, due to the action of the delay mechanism (eddy current damper 8), the ascending speed of the feed lever 1 is suppressed at low speed, whereby the rotational speed of the cam is also suppressed at low speed. That is, due to the frictional force of the blade 21, the blade 21 is advanced at a low speed so that the entire chip part P is moved forward by one increment.

16A-16C show the operation of the mounter lever A and the blade 21 of the supply apparatus shown in FIG. In addition, FIG. 16B shows the operation of the blade 21 without the delay mechanism (eddy current damper 8).

When the blade 21 does not have a delay mechanism, as shown in Fig. 16B, since the blade 21 is moved synchronously with the rise of the mounter lever A, the advancing time Δt _a of the blade 21 Is short. On the contrary, when the delay mechanism 8 is provided, as shown in Fig. 16C, the blade 21 advances out of synchronism with the rise of the mounter lever A, so that the advance time? t _b is extended so that a frictional force is generated sufficiently between the chip component P and the blade 21. In addition, at the time of retreat, in the case shown in FIGS. 16B and 16C, since the projection 21a of the rear end part of the blade 21 falls to the curved part of the cam 23, the blade 21 retreats at high speed.

In this embodiment, due to the cam shape of the cam 23 and the synergistic effect of the delay mechanism 8, the forward speed of the blade 21 is further reduced, so that the chip component P and the blade 21 are reduced. The friction force between) can work more effectively. The retraction speed of the blade 21 is determined by falling from the vertex portion of the cam 23 to the curved portion without depending on the speed of the mounter lever A, so that the retraction speed can be increased. P can reliably slide with respect to the blade 21 at the time of retreat. Therefore, a very stable supply is possible.

17 and 18 show a chip component supply apparatus according to a fourth embodiment of the present invention. In this embodiment, as in the second embodiment (see Fig. 7), the blade 21 is used as the conveying member. On the other hand, the hysteresis brake 30 is used as the delay mechanism. In addition, about the part which has the same function as the case of FIG. 7, the same code | symbol is attached | subjected and duplication description is abbreviate | omitted.

The hysteresis brake 30 includes a yoke 31 having a compound magnetic pole 32 and a soft magnetic body 33 disposed to face the compound magnetic pole 32. The yoke 31 is disposed integrally with the feed lever 1, and the soft magnetic body 33 is fixed to the supply apparatus body, for example. As shown in Fig. 18, in the composite magnetic pole 32, the plurality of magnets 32a to 32c are arranged so that the N and S poles of the magnets are alternately arranged. The soft magnetic body 33 is arranged to face the composite magnetic pole 32 and to be relatively movable in the opposite direction and the vertical direction.

In addition, in the composite magnetic pole 32, instead of forming the composite magnetic pole 32 by the plurality of magnets, a plurality of poles may be alternately arranged in one magnet.

The operating principle of the hysteresis brake 30 will be described with reference to FIG. 19.

When the magnetomotive force H by the magnets 32a to 32c exhibits a sine wave, as shown in FIG. 19B, the magnetic flux density B of the magnetic body 33 magnetized with the magnetomotive force is shown in FIG. 19C. Is shown. The phase difference θ between the magnetic force H and the magnetic flux density B is generated by the hysteresis curve (B-H curve) of the magnetic body 33 shown in FIG. 19D. That is, since the BH curve has hysteresis characteristics, with respect to the magnetic force H of the complex magnetic pole 32 distributed in the sine wave in space, the waveform of the magnetic flux density B of the magnetic body 33 magnetized by the magnetic force is distorted so as to diverge from the sinusoidal wave. , Deviates from the magnetomotive force H by θ. When using Fleming's left hand law, the force T is obtained by the following relationship:

T = k, H, B, sinθ (where k = constant)

Therefore, when the magnetic body 33 having a large hysteresis loss is used, the phase difference θ increases, and therefore the brake force T increases.

The hysteresis brake 30 has a characteristic that the generated brake force does not depend on the speed, so that the brake force can be easily obtained even at a low speed. Therefore, when the hysteresis brake 30 is disposed between the feed lever 1 and the feeder main body, even when the feed lever 1 is moved at a low speed, sufficient brake force can be obtained, so as to reliably execute the delay operation. Can be. That is, when the feed lever 1 rises by the elastic energy (spring force) stored in the spring 2, the rising speed of the feed lever 1 is suppressed at low speed by the action of the hysteresis brake 30, and the blade The forward speed of 21 also decreases.

As a result, by advancing the blade 21 at a low speed, the chip part P can be reliably moved forward by one increment due to the frictional force of the blade 21.

In the fourth embodiment, as the magnetic body 33 forming the hysteresis brake 30, a conductive material may be used, or a magnetic body to which the conductive material is bonded may be used.

In the latter case, the hysteresis brake 30 can also combine the function of an eddy current damper. That is, by the effect of the hysteresis brake, a strong braking force can be obtained even at low speed operation, and when the speed of the feed lever 1 is increased, the effect as an eddy current damper increases, and a strong braking force acts. Therefore, excessive acceleration of the feed lever 1 is suppressed, and chip components can be reliably transported.

The reciprocating transport member is not limited to the blade, and any member can be used as long as it can be used as the lower portion of the guide passage of the chip component and can move back and forth. However, when a thin member such as a blade is used, it is possible to reduce the weight, so that the influence of inertia upon reciprocating movement can be reduced.

According to the present invention, the operating direction of the chip mounter (mounter lever A) is not limited to the up and down direction; It may be a horizontal direction or an inclined direction, and the operation direction may be arbitrarily selected.

Similarly, the operating direction of the feed lever is not limited to the up and down direction; It may be in a horizontal direction or in an inclined direction. Moreover, the operation of the feed lever is not limited to linear movement; It may swing around the axis of rotation.

In the fourth embodiment, as a delay mechanism, hysteresis brake 30 is applied to a supply apparatus with blades 21; However, it can be reliably applied to the feeding device with the belt 12 shown in FIG.

In the above embodiment, a delay mechanism such as an eddy current damper 8 or a hysteresis brake 30 is disposed between the feed lever 1 and the supply body (fixing part); It is not limited to such arrangements. For example, as long as the separate member is not moved at least upon retraction of the feed lever, it may be disposed between the feed lever and the separate member.

Also, instead of a feed lever, a delay mechanism can be arranged between the blade and the feeder body.

As can be seen from the above description, in the supply apparatus according to the first aspect of the present invention, due to the delay mechanism, the conveyor belt is out of synchronization with the return operation of the chip mounter, and moves at a low speed after the chip mounter stops. Continue. Thereby, the belt can be driven at a low speed for a long time, and the friction force between the belt and the chip component can act effectively, so that the chip component can be supplied in a stable state even at high speed operation.

In the supply apparatus according to the second aspect of the present invention, the chip component can be supplied in one direction by the difference in the frictional forces due to the speed difference between the supply (advanced) and the return (retracted) of the transport member. Due to the delay mechanism, the feed lever returns later than the chip mounter. Thus, the transport member also advances at a slower speed later than the chip mounter, so that the frictional force can effectively act on the chip component located in the transport member. Therefore, the chip component can be stably supplied even at high speed.

Claims (7)

delete A feed member actuated by an input load from the chip mounter and a conveying member connected to the feed lever via a transmission mechanism, and reciprocally actuating the conveying member to thereby friction the chip component on the conveying member. A device for supplying chip components to be supplied in one direction by using Propulsion means for pushing the feed lever in the return direction by storing the input load in the operating direction of the chip mounter as energy; And A delay mechanism for delaying the return operation of the feed lever with respect to the operation in the return direction of the chip mounter, When the chip mounter operates in the operating direction, the feed lever is moved in the operating direction by being connected to the chip mounter, and the chip component slides with respect to the transport member by retracting the transport member at high speed through the transfer mechanism, When the chip mounter operates in the return direction, the feed lever moves in the return direction so as to be delayed with respect to the chip mounter by the delay mechanism, and the chip component advances the transport member at a low speed through the transfer mechanism and the transport member. A device for supplying chip components, characterized in that being transported integrally. 3. The transfer mechanism according to claim 2, wherein the transfer mechanism includes a cam for intermittently rotating in one direction in accordance with the movement of the feed lever and a spring for contacting the cam face with the cam surface. Supply of chip parts. 3. The delivery mechanism of claim 2, wherein the delivery mechanism includes a bell crank rotatably connected to an arm portion formed such that the feed lever and the transport member protrude on both sides of the swinging axis. Supply device for chip parts. The device for supplying a chip component according to any one of claims 2 to 4, wherein the delay mechanism is an eddy current damper. 5. The apparatus for supplying chip components according to any one of claims 2 to 4, wherein the delay mechanism is a hysteresis brake. 7. The chip component supply apparatus according to claim 6, wherein the hysteresis brake adds a function as an eddy current damper by forming all or part of a magnetic material forming the hysteresis brake from a conductive material.