TW201343022A - Abnormal contact testing method, electronic component holding device and electronic component transporting device - Google Patents

Abstract

An abnormal contact testing method, an electronic component holding device and an electronic component transporting device for testing an abnormal contact of an electronic component during a delivery process of the electronic component are provided. A downward force Fr is applied to a holding portion 2 through a rod 32 according to a lifting motor 4, and the rod 32 is applied with an anti-pushing force Fopp according to a voice coil motor 37, wherein the anti-pushing force Fopp is identical with a counteracting force Fcr applied to the rod 32 relative to the downward force Fr. Moreover, a relative lift of the rod 32 to the voice coil motor 37 is tested, and a touch to a carrier tape 61 during a drop is tested according to that the lift of the rod 32 is tested, wherein the relative lift is reflected by a resisting force Fd generated while an electronic component D is touching to the carrier tape 61 and dropping.

Description

Abnormal contact detecting method, electronic component holding device, and electronic component handling device

The present invention relates to an abnormal contact detecting method for detecting abnormal contact when a unit delivers an electronic component, an electronic component holding device using the same, and an electronic component carrying device including the electronic component holding device.

An electronic component such as a semiconductor element is subjected to various inspections after being separated into individual pieces by respective assembly steps such as dicing, mounting, bonding, and sealing. This step is generally performed by an electronic part handling device called a test handler. The electronic component conveying device includes an electronic component holding device, and the electronic component is held by the holding mechanism of the electronic component holding device, and is handled by the processing unit facing each step. The electronic component processed in the end step is housed in a pocket of a carrier tape by a taping unit which is one of the step processing units.

In the case of the tape unit, when the electronic component is in abnormal contact with the bag body, This causes the electrode terminal terminals of the electronic parts to bend or break. The abnormal contact means that the electronic component continues to perform the step of inserting the bag while contacting the edge of the bag body. In general, the cause of the abnormal contact is that a positional shift occurs in any of the holding means of the electronic component, the electronic component, or the bag body of the carrier tape.

Therefore, in the tape winding unit, it is checked whether or not the electronic component is stored in the bag body of the carrier tape in an appropriate posture, whether the lead electrode of the electronic component is abnormally bent, and whether the electronic component has scratches or the like. Various methods for inspecting defective electronic components have been proposed (for example, refer to Patent Document 1).

For example, after the electronic component is inserted into the bag body, the carrier tape is taken up at a predetermined pitch, and the electronic component is moved to the visual inspection position, imaged by the imaging mechanism, and the defect is checked by image analysis. When a defect is detected, the bag body containing the defective product is returned to the immediately below the holding mechanism, and the electronic component is taken out from the bag body using the holding mechanism. Further, a method has been proposed in which the main stage is rotated by 1/2 pitch in the reverse direction, and the holding mechanism is withdrawn from the accommodating position, so that the removing mechanism is moved to the accommodating position to remove the electronic component.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] International Publication WO2010/089275

Most of the methods thus proposed are carried out after inserting the electronic component into the bag at one time. Detection of defects in electronic components. After being inserted into the bag, The range in which visual inspection of electronic parts can be performed is limited. For example, when the electronic component inserted into the bag body is photographed from above by the image pickup mechanism and the image analysis is inferior, it is difficult to detect the subtle bending of the electrode pin terminal extending from the electronic component. Moreover, since it is impossible to photograph the back side of the electronic component, it is difficult to detect the crack generated on the back side of the electronic component.

Therefore, a technique is expected in which an abnormal contact which is a cause of a defect in an electronic component is detected during the delivery of an electronic component, and it is not necessary to insert an electronic component having a possibility of occurrence of a defect into the bag body of the carrier tape. Furthermore, if the detection technique of abnormal contact during the delivery of the electronic component can be established, since there are many delivery steps in the process of transporting the electronic component, there is a possibility of causing abnormal contact of the electronic component. The technology is expected to be widely used.

The present invention has been made in order to solve the problems of the prior art as described above, and an object thereof is to provide an abnormal contact detecting method capable of detecting abnormal contact of an electronic component during delivery of an electronic component.

The abnormal contact detecting method of the present invention is an abnormal contact detecting method of an electronic component holding device for an electronic component, wherein the electronic component holding device has a lifting motor, and the lifting motor causes a lever supported by the voice coil motor and the The holding mechanism of the electronic component is lowered together via the lever, and the abnormal contact detecting method is characterized in that the lowering force acts on the holding mechanism via the lever by the lifting motor, and The lever member imparts a counter-force equal to a reaction force with respect to the lever member with respect to the lowering force by the voice coil motor, and is reflected by an abnormal resistance generated by the lowering of the retaining mechanism The rod member detects the relative rise of the voice coil motor, and by means of the rod member The rise is detected, and abnormal contact with the electronic component in the middle of the drop is detected.

The holding mechanism for holding the electronic component may also be lowered toward the bag body of the carrier tape, and the bar member may be reflected by the resistance generated when one side of the electronic component contacts the carrier tape as it descends. The rise in the relativeivity of the ring motor is detected, and the contact of the carrier tape in the middle of the descent is detected by detecting the rise of the bar.

If the rise of the rod is generated, the lowering can also be aborted and the holding mechanism can be raised.

When the rise of the rod is generated, the contact of the electronic component in the middle of the lowering may be notified.

Moreover, the electronic component holding device of the present invention delivers an electronic component, and includes: a holding mechanism that can lift and lower the electronic component while being held toward the delivery portion by an external force; and the lifting motor generates the holding mechanism a lowering force; the rod member is movably disposed relative to the holding mechanism, and abuts against the holding mechanism, and transmits the downward force generated by the lifting motor to the holding mechanism; the voice coil motor, Applying a counter thrust to the rod, the counter thrust being equal to a reaction toward the rod due to the lowering force acting on the retaining mechanism; and a detecting mechanism for lowering the retaining mechanism The rods reflected by the abnormal resistance generated in the detection of the relative rise of the voice coil motor are detected.

The holding mechanism can be lowered while facing the electronic component, toward the bag body as the carrying portion of the delivery portion, and the detecting mechanism can generate resistance when the electronic component is lowered while contacting the carrier tape. Reflected rod The component detects the rise in the relative polarity of the voice coil motor.

If the rise of the lever is detected by the detecting mechanism, the holding mechanism can suspend the lowering and raise the holding mechanism.

An electronic component transporting apparatus according to the present invention is an electronic component transporting apparatus that transports electronic components to various step processing units arranged in a transport path and delivers the electronic components to the step processing unit, and is characterized by comprising: a holding mechanism The electronic component can be lifted and lowered while being held by an external force; the transport motor is configured to surround the holding mechanism along the transport path, and the holding mechanism is above the delivery portion of the step processing unit Stopping; a lifting motor generating a lowering force of the holding mechanism; the lever member being hoistably disposed above the holding mechanism stopped above the delivery portion, and abutting against the holding mechanism for lifting The downward force generated by the motor is transmitted to the retaining mechanism; the voice coil motor imparts a counter thrust to the lever, the counter thrust being opposite to the lowering force acting on the retaining mechanism The reaction of the rods is equal; and the detecting mechanism reflects the abnormal resistance generated during the lowering of the holding mechanism Rise detecting member relative to the voice coil motor.

The holding mechanism may also lower the bag toward the carrier of the carrier tape as the delivery portion while holding the electronic component, and the detecting mechanism may also generate a surface of the electronic component when the electronic tape is in contact with the carrier tape. The rods reflected by the resistance are detected for the relative rise of the voice coil motor.

Further, the defective product discharge mechanism of the electronic component may be further included, and when the detection mechanism detects the rise of the lever by the detecting mechanism, the lowering is stopped, and the holding mechanism is raised. The defective product discharge mechanism transfers the electronic component.

The notification mechanism may further include a notification mechanism that notifies the contact of the electronic component to the carrier tape in the middle of the drop if the rise of the lever is generated.

According to the present invention, it is possible to detect an abnormal contact which is a cause of defective electronic parts during the delivery of the electronic component, and to more reliably remove the electronic component having the possibility of occurrence of a defect due to the abnormal contact.

1‧‧‧Electronic parts holding device

2‧‧‧ Keeping Department

3‧‧‧Extrusion

4‧‧‧ Lifting motor

5‧‧‧Control Department

6‧‧‧Tape unit

7‧‧‧Electronic parts handling device

21‧‧‧ Arm

22‧‧‧ Bearing

23‧‧‧Compressed spring

24‧‧‧Flange

25‧‧‧Connectors

31‧‧‧Linear guide

32‧‧‧ rods

33‧‧‧Frame

33a‧‧‧ Lower arm

33b‧‧‧ upper arm

34‧‧‧Cam followers

35‧‧‧ bearing

36‧‧‧Compression spring

37‧‧‧ voice coil motor

38‧‧‧Detection Department

37a‧‧‧ Magnet

37b‧‧‧ring coil

38a‧‧ Air port

38b‧‧‧ Cover

38c‧‧‧ pipeline

38d‧‧‧ flowmeter

38e‧‧‧Pneumatic circuit

41‧‧‧Cylinder cam

51‧‧‧Motor Control Department

52‧‧‧VCM Control Department

53‧‧‧Abnormal contact determination department

61‧‧‧ Carrying belt

62‧‧‧ bag body

71‧‧‧Transportation path

72‧‧‧ Turntable

73‧‧‧Transport motor

74‧‧‧Step processing unit

74a‧‧‧Dangerous product discharge device

75‧‧‧Control Department

75a‧‧ Notification Department

75b‧‧‧Export Control Department

81‧‧‧Transportation path

82‧‧‧Transit station

82a‧‧‧Loading surface

82b‧‧‧Baffle

83‧‧‧Guide members

83a‧‧ hole

84‧‧‧ socket

D‧‧‧Electronic parts

Fcr‧‧‧ reaction

Fopp‧‧‧ against thrust

Fr‧‧‧down force

Ff‧‧‧Upforce

Fd‧‧‧ resistance

R‧‧‧ resistance

N‧‧‧ magnetic pole

S‧‧‧ magnetic pole

S01, S02, S03, S04, S05‧‧ steps

S11, S12, S13, S14, S15, S16‧‧ steps

Fig. 1 is a side view showing the overall configuration of an electronic component holding device of the embodiment.

Fig. 2 is a side view showing the internal structure of a voice coil motor.

3 is an enlarged side view showing an external configuration of a detecting unit included in the electronic component holding device.

4 is a view showing an overall configuration of a detecting unit.

Fig. 5 is a block diagram showing a control unit of the electronic component holding device.

FIG. 6 is a flowchart showing a control operation of a control unit of the electronic component holding device.

Fig. 7 is a side view showing the force received by each portion of the electronic component holding device in a normal state.

8 is a side view showing a state of a detecting unit in a normal state.

Fig. 9 is a side view showing the force received by each portion of the electronic component holding device when the electronic component contacts the carrier tape.

Fig. 10 is a side view showing a state of a detecting portion when an electronic component contacts a carrier tape.

FIG. 11 is a plan view showing an overall configuration of an electronic component conveying device according to the embodiment.

Fig. 12 is a side view showing the overall configuration of an electronic component conveying device according to the embodiment.

FIG. 13 is a block diagram showing a configuration of a control unit of the electronic component conveying device at the time of abnormal contact detection.

FIG. 14 is a flowchart showing the processing of the control unit of the electronic component conveying device at the time of abnormal contact detection.

Figure 15 is a partial enlarged view of a parts feeder.

Figure 16 is a partial enlarged view of the position correcting unit.

Figure 17 is a partial enlarged view of the test contact device.

Hereinafter, an embodiment of the abnormal contact detecting method of the electronic component holding device of the electronic component conveying device of the present invention will be described in detail with reference to the drawings.

(electronic parts holding device)

FIG. 1 is a side view showing an overall configuration of an electronic component holding device 1. The electronic component holding device 1 shown in Fig. 1 is a device that delivers the electronic component D to the step processing unit 74 (see Fig. 11). The step processing unit 74 is a device that performs step processing on the electronic component D, and includes a tape winding unit 6. The tape winding unit 6 is a carrier tape in which the bag body 62 that houses the electronic component D is intermittently processed by embossing. 61.

In the tape winding unit 6, the electronic component holding device 1 inserts the electronic component D into the bag body 62, and the electronic component D is detached from the bag body 62. At this time, the electronic component holding device 1 prevents the defective product which is caused by the electronic component D from being improperly inserted into the bag body 62, and is directly wrapped around the carrier tape 61. That is, the electronic component holding device 1 detects the abnormal contact of the electronic component D at the insertion stage of the bag body 62. The abnormal contact detecting method is a resistance generated when the induction carrying belt 61 is in contact with the electronic component D while continuing the insertion step.

The electronic component holding device 1 mainly includes a holding portion 2, a pressing body 3, and a lifting motor 4. The holding portion 2 is raised and lowered by an external force while holding the electronic component D. The lifting motor 4 generates a lowering force of the holding portion 2, and controls the lowering end point and the lowering speed of the holding portion 2. The pressing body 3 mainly transmits the downward force generated by the lifting motor 4 to the holding portion 2.

The holding portion 2 is, for example, a suction nozzle. The inside of the holding portion 2 is a hollow pipe and has an opening at the front end. Through the joint 25 connected to the rear end, the inside of the duct communicates with the pneumatic circuit, and the electronic component D is sucked at the front end by the generation of vacuum, and the electronic component D is detached by vacuum destruction. The electronic component D can also be detached by the release of the atmosphere, and the vacuum damage and the release of the atmosphere can be changed in order to disengage the electronic component D.

The holding portion 2 is supported by the arm 21 that is fixed to the height of the bag body 62 and is located above the bag body 62. The arm 21 extends substantially in parallel with respect to the opening surface of the bag body 62, and a bearing 22 that is perpendicular to the opening surface of the bag body 62 is formed at the tip end. The holding portion 2 inserts the front end provided with the opening toward the bag body 62 toward the bag body 22, thereby being slidably supported by the arm 21.

A compression spring 23 is provided at the upper edge of the bearing 22 of the arm 21. The compression spring 23 is a protruding portion that is inserted into the holding portion 2. The protruding portion of the holding portion 2 is a portion that protrudes from the upper edge of the bearing 22. A flange 24 is provided on the rear end side of the holding portion 2, and the compression spring 23 is biased in the direction in which the holding portion 2 is separated from the bag body 62 via the flange 24. When the external force to the bag body 62 of the holding portion 2 is released, the holding portion 2 rises so as to be separated from the bag body 62.

The pressing body 3 is slidably supported by a linear guide 31 in a direction in which the holding portion 2 is pushed downward. The track portion of the linear guide 31 extends in a direction perpendicular to the bag body 62 and is fixed in height. A rod member 32 is provided at a lower end of the pressing body 3. The rod 32 is disposed to face the rear end of the holding portion 2, and the axis is common to the holding portion 2. The pressing body 3 slides down on the linear guide 31, and the lower end of the rod 32 abuts against the rear end of the holding portion 2, and transmits an external force toward the descending direction to the holding portion 2.

The pressing body 3 has a rough Word-shaped frame 33. The pressing body 3 is supported by the linear guide 31 at a portion of the back of the frame 33, and the lever 32 is included at the lower arm 33a of the frame 33. The lower arm 33a of the frame 33 extends horizontally with respect to the opening face of the bag body 62, and a rod member 32 is attached to a portion where the front end thereof intersects the axis of the holding portion 2. The rod 32 is attached orthogonally to the extending direction of the lower arm 33a, and the front end and the rear end protrude from the upper and lower sides of the lower arm 33a.

In the upper arm 33b of the frame 33, a cam follower 34 is provided on the upper surface thereof. The cam follower 34 is provided to transmit the pressing force of the lifting motor 3 in order to transmit the rotational force of the lifting motor 4. The lifting motor 4 is, for example, a servo motor. A cylindrical cam 41 is fixed to the rotating shaft of the lifting motor 4. The cylindrical cam 41 abuts against the cam follower 34, and the cam follower 34 follows the cam of the cylindrical cam 41 Face-to-face.

The rotational force of the lifting motor 4 is converted into a force in the linear direction along the linear guide 31 by the cylindrical cam 41 and the cam follower 34, and the pressing body 3 is lowered while pressing the holding portion 2. When the holding portion 2 is lowered, the lifting/lowering motor 4 rotates the rotating shaft at a rotational speed and a torque that lowers the holding portion 2 and the rod 32 at a predetermined speed. Moreover, the rotation axis is rotated by the amount of rotation set so that the holding portion 2 reaches a predetermined lower end point. The descending end point of the holding portion 2 is a point at which the electronic component D reaches the bottom surface of the bag body 62 or a position above the fixed distance from the bottom surface. The rotational speed, the torque, and the amount of rotation of the lift motor 4 are controlled by the supply of electric power to the lift motor 4.

Here, the pressing body 3 further includes a detecting mechanism that senses the resistance generated by the carrier tape 61 contacting the electronic component D while continuing the insertion step. This detecting means is a detecting mechanism for detecting the sliding mechanism of the lever 32, the voice coil motor 37 that supplies the thrust to the lever 32, and the relative rise of the lever 32 to the voice coil motor 37. Furthermore, the relative rise of the voice coil motor 37 is in other words the insertion of the lever 32 into the voice coil motor 37.

Specifically, a bearing 35 that is perpendicular to the opening surface of the bag body 62 is bored in the lower arm 33a of the frame 33. The rod member 32 is inserted into the bearing 35 and is slidable in the axial direction of the rod member 32. Further, on the lower surface of the lower arm 33a of the frame 33, a compression spring 36 having a biasing force for the rod member 32 to enter from the voice coil motor 37 is provided to assist the thrust of the voice coil motor 37.

The voice coil motor 37 is fixed to the lower surface of the upper arm 33b of the frame 33. The voice coil motor 37 supports the rear end side of the lever member 32 to allow the lever member 32 to enter and retreat. The voice coil motor 37 is a linear motor in which the current is proportional to the thrust. Further, as shown in FIG. 2, a magnet 37a and a coil 37b are included. The toroidal coil 37b is coupled to the rod 32, and the rod 32 is interlocked with the toroidal coil 37b. The magnet 37a is applied to the loop coil 37b to apply a magnetic field. When the loop coil 37b is energized, the loop coil 37b is placed in the electromagnetic field, and a Lorentz force is generated in the loop coil 37b. Thereby, the lever 32 connected to the toroidal coil 37b is thrust in the direction toward the holding portion 2.

The voice coil motor 37 generates a counter thrust Fotop which is equal to the reaction force Fcr for the lever member 32 which is generated by the lever member 32 transmitting the lowering force Fr to the holding portion 2. That is, the voice coil motor 37 generates a static thrust that maintains the balance state of the lever member 32, and maintains the position of the lever member 32 with respect to the voice coil motor 37 with an appropriate force.

As shown in FIG. 3, the detecting portion 38 is a lid portion 38b including an air port 38a and an air port 38a that opens and closes the air port 38a. The air port 38a is an opening orthogonal to the advancing and retracting direction of the rod member 32, and is provided on the upper surface of the lower arm 33a of the frame 33. The lid portion 38b is located directly above the air port 38a, and protrudes from the circumferential surface of the rod member 32 so as to move in conjunction with the rod member 32. The protruding position is a height at which the lid portion 38b covers the air port 38a in a state where the rod member 32 does not abut against the holding portion 2. As shown in Fig. 4, the air port 38a is one end of the duct 38c connected to the air pressure circuit 38e, and a flow meter 38d is provided inside the duct 38c. The flow rate indicator 38d is, for example, a differential pressure detecting unit that detects a differential pressure between an orifice that protrudes in the duct and two regions that are divided by the orifice.

The detecting unit 38 detects that the rod member 32 relatively rises with respect to the voice coil motor 37 by detecting the inflow or outflow of the air passing through the air port 38a. The reason for this is that when the rod 32 is raised, the lid portion 38b is separated from the air port 38a.

FIG. 5 is a block diagram showing the control unit 5 of the electronic component holding device 1 having such a mechanical configuration. The control unit 5 includes a motor control unit 51, a VCM (Voice Coil Motor) control unit 52, and an abnormal contact determination unit 53.

The motor control unit 51 controls the torque, the rotation speed, and the amount of rotation of the elevation motor 4 . When the lift motor 4 is a servo motor, the motor control unit 51 includes an encoder and a torque detector. The VCM control unit 52 controls the thrust of the voice coil motor 37. The abnormal contact determining unit 53 determines the abnormal contact of the electronic component D with the bag body 62 based on the signal from the detecting unit 38. Further, the control unit 5 may be provided as a part of the configuration of the electronic component holding device 1, or may be provided as a part of the control unit 75 of the electronic component conveying device 7 described below.

FIG. 6 is a flowchart showing the control operation of the control unit 5. Hereinafter, the control operation of the control unit 5 will be described together with the state of the electronic component holding device 1.

First, at the stage of inserting the electronic component D into the carrier tape 61, the positioning of the holding portion 2 and the bag body 62 is performed in advance so that the axis of the holding portion 2 passes through the center of the bottom surface of the bag body 62. Specifically, the holding portion 2 is stopped at the installation position of the winding unit 6, and the winding unit 6 unwinds the carrier tape 61, whereby the empty bag body 62 is moved to the stop position of the holding portion 2. Further, a negative pressure is generated inside the duct of the holding portion 2, and the electronic component D is sucked at the tip end of the holding portion 2.

In the insertion phase, the motor control unit 51 starts the driving of the lifting motor 4 in step S01. The motor control unit 51 causes the lifting motor 4 to generate a force by which the holding portion 2 and the rod 32 are lowered together via the rod 32.

By the driving of the lifting motor 4, the cylindrical cam 41 rotates, and the cam follower 34 that abuts against the cam surface of the cylindrical cam 41 receives the thrust toward the bag body 62. The thrust toward the bag body 62 becomes a moving force of the pressing body 3 toward the holding portion 2, so that The extruded body 3 is lowered along the linear guide 31. When the pressing body 3 is lowered, the rod member 32 abuts against the rear end of the holding portion 2. The motor control unit 5 further drives the elevation motor 4, whereby the pressing body 3 pushes the holding unit 2 downward. The holding portion 2 starts to descend against the upward pushing ability of the compression spring 23.

At this time, as shown in FIG. 7, the holding portion 2 receives the downward force Fr from the rod member 32, and the rod member 32 receives the reaction force Fcr. When the reaction force Fcr is provided with the compression spring 23 that pushes the holding portion 2 upward, the reaction force Fcr is equal to the resistance of the elastic force of the compression spring 23 that is pressed in the extending direction. Further, in the case where the compression spring 36 that pushes the lever 32 downward is provided, the reaction force Fcr received by the lever 32 and the elastic force of the compression spring 23 from the holding portion 2 are subtracted from the elastic force of the compression spring 36. The resistance of the force is equal.

Further, in the insertion phase, in step S02, the VCM control unit 52 starts driving the voice coil motor 37, and generates a counter thrust Fopp equal to the reaction force Fcr in the lever 32. The voice coil motor 37 starts to be driven at the same time as the lift motor 4 generates a thrust force, or before the lever member 32 comes into contact with the holding portion 2. The counter-force equivalent to the reaction force Fcr is Fopp, and the thrust is the same magnitude but opposite direction to the reaction force Fcr. Strictly speaking, as the compression spring 23 is compressed, the reaction force Fcr is increased, but the anti-pressure Fopp can be controlled to increase in proportion to the reaction force Fcr by the VCM control unit 52.

At this time, as shown in FIG. 7, the lever member 32 receives the reaction force Fcr, but since the self-voice coil motor 37 receives the counter thrust Fopp, the force acting on the lever member 32 is balanced, and the lever member 32 maintains the balance state with respect to the voice coil motor. 37 does not advance and retreat. Further, as shown in Fig. 8, when the balance state of the rod 32 is maintained, the lid portion 38b covers the air port 38a, and no inflow or outflow of air occurs from the air port 38a.

Then, in step S03, the abnormal contact determination unit 53 determines whether or not the detection unit 38 detects the rise of the rod 32.

When the lever 32 is maintained in the equilibrium state, the relative increase of the lever 32 to the voice coil motor 37 is not generated, so that the cover portion 38b holds the air cover 38a. Therefore, the value of the flow meter does not change, and the detecting unit 38 outputs a constant value to the abnormal contact determining unit 53. The abnormal contact determination unit 53 confirms that the output value is a constant value by comparing the threshold value stored in advance with the output value of the detection unit 38, and it is considered that the rise of the rod 32 is not detected based on the confirmation.

On the other hand, there is a case where the position of the holding portion 2, the holding form of the electronic component D, or the position of the bag body 62 is shifted, so that the holding portion 2 is lowered as shown in FIG. Midway, the electronic component D is in contact with the carrier tape 61. At this time, the rod member 32 receives the resistance Fd when the carrier member 61 is twisted while the electronic component D and the holding portion 2 continue to descend.

The voice coil motor 37 only gives the lever 32 a counter-force Fopp that becomes |Fcr|=|Fopp|, and thus becomes |Fopp|<|Fcr+Fd|, and generates a rising force Ff to the rod 32, and the equilibrium state is broken. Therefore, the lever 32 is relatively raised with respect to the voice coil motor 37, and moves in the opposite direction to the bag body 62.

As shown in Fig. 10, when the rod 32 is raised, the lid portion 38b of the covered air port 38a is separated from the air port 38a. In the air port 38a opened by the lid portion 38b, air flows in or out, and the value of the flow meter 38d changes. The abnormal contact determining unit 53 confirms that the output value is a change value by comparing the threshold value with the output value of the detecting unit 38, and it is considered that the lever 32 is detected to rise based on the confirmation.

If it is detected that the lever 32 is raised (step S03, Yes), this case indicates that the electronic component D is abnormally in contact with the bag body 62. Therefore, in step S04, by second The electronic component conveying device 7 described above performs a treatment operation.

On the other hand, if the lever 32 is not detected to rise (step S03, No), the motor control unit 51 determines whether or not the amount of decrease in the holding unit 2 has reached the set value in step S05. The set value corresponds to the bottom surface of the electronic component D reaching the bag body 62. When the amount of decrease in the holding unit 2 does not reach the set value (step S05, No), the abnormal contact determining unit 53 determines whether or not the detector detects the rise of the rod 32 (step S03) until the holding unit 2 reaches the lowering end point ( Step S05, Yes).

When the lever 32 is not detected to rise (step S03, No), and the amount of decrease of the holding portion 2 reaches the set value (step S05, Yes), the abnormal contact detecting process ends, and the electronic component holding device 1 performs the storage of the electronic component D. The remaining motion of the bag body 62. That is, the holding portion 2 is separated from the component D, and the holding portion 2 is raised. Specifically, the vacuum inside the duct of the holding portion 2 is broken, and the electronic component D is detached. Then, by pressing the cylindrical cam 41 further, the pressing of the pressing body 3 by the cam follower 34 is released, whereby the holding portion 2 is released from the rod 32 and is compressed by the spring 23. The holding portion 2 is raised by the ability.

(Electronic parts handling device 7)

Next, the electronic component conveying device 7 in which the electronic component holding device 1 is mounted and the process of detecting abnormal contact is performed will be described. FIG. 11 is a plan view showing an overall configuration of the electronic component conveying device 7, and FIG. 12 is a side view.

The electronic component conveying device 7 forms the conveyance path 71 of the electronic component D, and sequentially transports the electronic component D to each of the step processing units 74 arranged along the conveyance path 71. The conveyance path 71 is formed by a turntable 72 and an electronic component holding device 1. The turntable 72 is centrally supported by the rotating shaft of the transport motor 73. Further, the predetermined angle is intermittently rotated in accordance with the driving of the transport motor 73. The transport motor 73 is, for example, a direct drive motor.

The electronic component holding device 1 is provided in plurality on the outer periphery of the turntable 72 so as to have a position such as a circumference. Specifically, the arm 21 is fixed to the outer periphery of the turntable 72, and the holding portion 2 is supported by the arm 21. Further, the linear guide 31 is fixed above the outer periphery of the turntable 72, and the pressing body 3 is supported by the linear guide 31 above the turntable 72, and the lifting motor 4 is provided at a fixed block for fixing the linear guide 31.

Each step processing unit 74 including the tape winding unit 6 is arranged along the outer circumference of the turntable 72. As the other step processing unit 74, one or a plurality of the feeder, the position correcting unit, the test contact device, the marking unit, the visual inspection device, the sorting mechanism, the defective product discharging device 74a, and the like are selectively disposed.

In the present embodiment, the defective unit discharge device 74a that discharges the unwrapped electronic component D from the electronic component inspection device is provided downstream of the tape winding unit 6 in the subsequent direction of the tape winding unit 6, that is, in the rotation direction of the turntable 72.

The arrangement interval of the holding portions 2 is equal to the rotation angle of one pitch of the turntable 72. In other words, the direct drive motor intermittently rotates the turntable 72 at the same pitch as the arrangement interval of the holding portion 2. The pressing body 3 is provided at a position that coincides with the stop position of the holding portion 2. Further, the processing unit is also provided at a portion that coincides with the stop position of the holding portion 2. Further, when the number of the stop positions of the holding portion 2 is the number of the conveyance processing units, the number of the processing units may be different, and the stop position of the holding portion 2 in which the conveyance processing unit is not disposed may be present.

In the electronic component handling device 7, the electronic component D is maintained The portion 2 is intermittently rotated with the turntable 72, and sequentially moves to a stop position set at a matching position such as a circumference. When the holding portion 2 is at the stop position, the drive portion existing above the holding portion 2 lowers the holding portion 2. At the end of the lowering of the holding portion 2, there is a step processing unit 74, and the electronic component D is subjected to the step processing by the step processing unit 74 of the descending end point. When the step processing is completed, the pressing body 3 raises the holding portion 2, and the turntable 72 moves the holding portion 2 to the next stop position.

When the electronic component D is delivered to the step processing unit 74 other than the carrier tape 61, the voice coil motor 37 pushes the electronic component D to the stage of the step processing unit 74, and controls the pressing load to a predetermined value.

FIG. 13 is a block diagram showing a configuration of the control unit 75 at the time of abnormal contact detection in the electronic component conveying device 7. The electronic component conveying device 7 includes a turntable 72, an electronic component holding mechanism, and a control unit 75 that controls each step processing unit 74. The control unit 75 includes a notification unit 75a that notifies the abnormal contact when the abnormal contact is detected, and the discharge control unit 75b that discharges the defective product.

The notification unit 75a notifies the abnormal contact. The notification unit 75a is a device that can be transmitted to a person's facial features such as a display, a speaker, a printer, or a patrol lamp connected by a communication line. Yes. Further, the notification unit 75a may include a memory for storing data, and records an abnormal contact to be recorded in the memory, and when the user generates a browsing request, the abnormal contact can be notified.

The discharge control unit 75b does not bundle the electronic component D that is in abnormal contact with the bag body 62 in the carrier tape 61, and causes the defective product discharge device 74a to discharge the defective product. FIG. 14 is a flowchart showing the operation of the discharge control unit 75b.

When the abnormal contact determining unit 53 determines that the electronic component D is in abnormal contact, Then, in step S11, the notification unit 75a notifies the abnormal contact. Specifically, data showing abnormal contact is written into the memory, and the data is output to a display or a printer. Also, the speaker is caused to generate a warning sound, and the warning light is turned on.

When the abnormal contact determining unit 53 determines that the electronic component D is in abnormal contact, the discharge control unit 75b stops the operation of the electronic component holding device 1 in which the electronic component D is inserted into the bag body 62. In other words, in step S12, the lowering of the holding unit 2 is stopped by stopping the rotation of the raising/lowering motor 4. Then, in step S13, by pressing the pressing body 3 to release the biasing force of the compression spring 23, the holding portion 2 is raised in the holding state of the electronic component D.

Further, the discharge control unit 75b discharges the electronic component D that is in abnormal contact from the electronic component conveying device 7. That is, in step S14, the turntable 72 is rotated by one pitch so that the holding portion 2 of the electronic component D holding the abnormal contact is positioned above the defective product discharge device 74a. Then, in step S15, the holding portion 2 is lowered and the electronic component D is detached, whereby the electronic component D that is in abnormal contact is transferred to the defective product discharge device 74a.

Finally, in step S16, the discharge control unit 75b controls the defective product discharge device 74a to discharge the electronic component D that is in abnormal contact from the electronic component conveying device 7.

(effect)

As described above, in the abnormal contact detecting method of the present embodiment, the lowering force Fr acts on the holding portion 2 via the rod 32 by the lifting/lowering motor 4, and the rod member 32 is given by the voice coil motor 37. The counterforce Fotop is equal to the reaction force Fcr of the lever 32 of the lowering force Fr. Moreover, the lever member 32 for the resistance Fd generated when the inductive electronic component D is in contact with the side of the carrier tape 61 is closed to the voice coil The relative rise of the motor 37 is detected, and the contact of the carrier tape 61 in the middle of the drop is detected by detecting the rise of the lever 32.

This method is to make the voice coil motor 37 function as a configuration of abnormal contact detection. That is, the striking force 32 is equal to the counter force Fopp which is subjected to the reaction force Fcr of the rod member 32, whereby the comprehensive load on the rod member 32 is 0 Newton, and the inductive electronic component D is in contact with one side. The resistance Fd generated when the carrier belt 61 is lowered on one side.

The voice coil motor 37 is preferably used so that the comprehensive load applied to the lever member 32 is 0 Newton. The voice coil motor 37 can generate a thrust proportional to the current value, and the thrust can be adjusted with a small pitch as compared with other motors. Therefore, it is easy to accurately match the reaction force Fcr with the counter thrust Fotop, and it is possible to detect the small resistance Fd from the soft material such as the carrier tape 67.

As a result, the abnormal contact with the carrier tape 6 which is one cause of the failure of the electronic component D can be detected extremely accurately and accurately, and the electronic component having the possibility of occurrence of defects due to the abnormal contact can be more reliably removed. D. Further, the voice coil motor 37 used to impart an appropriate load to the electronic component D in the step processing in the other processing unit 74 can be used or used in combination, so that a special mechanical configuration is not required.

Moreover, after the electronic component D is inserted into the bag body 62, the bag body 62 is moved to the inspection position, and when it is confirmed that it is a defective product, the bag body 62 is returned to the position of the holding portion 2, and is picked up by the holding portion 2. Bad products. Further, therefore, it is also necessary to perform a step of rotating the turntable 72 including the holding portion 2 in the reverse direction.

On the other hand, in the abnormal contact detecting method of the present embodiment, when the rod 32 is raised, the insertion of the electronic component D into the bag body 62 can be stopped. The holding portion 2 is raised, and the electronic component D is taken out from the bag body 62. According to the abnormal contact detecting method, when the electronic component D is abnormally contacted, the elimination step of the previous electronic component D is not required.

Therefore, the elimination step of the defective product associated with the abnormal contact can be drastically shortened. Moreover, for the other electronic parts D surrounding the conveyance path 71, the temporal influence by the step of eliminating the defective product related to the abnormal contact can be sufficiently reduced.

Further, there is a case where the electronic component D is defective due to factors other than the abnormal contact, and thus the previous inspection method can be used in combination. Further, when the rod 32 is raised, the contact of the electronic component D in the middle of the drop with the carrier tape 61 can be notified, and the electronic component D can be taken out by the user.

(Other step processing unit 74)

The abnormal contact detecting method of the present embodiment which can detect the small resistance Fd from the soft material such as the carrier tape 61 in this manner is extremely suitable for detecting the abnormal contact of the electronic component D with the carrier tape 61 at the time of the bag. However, it can of course be applied to the delivery of the electronic component D to other processing units.

For example, Figure 15 is a partial enlarged view of the feeder. The feeder shown in FIG. 15 is a unit that supplies the electronic component D to the electronic component conveying device 7. The feeder includes a transport path 81 and a relay station 82.

The conveyance path 81 is swung in a direction inclined with respect to the extending direction, and the electronic component D is moved to the terminal by the swinging action. The relay table 82 is a discharge mechanism that transfers the electronic component D on the conveyance path 81 to the holding unit 2, and delivers the electronic component D from the conveyance path 81, and the electronic component D is positioned at the stop position of the holding portion 2 by parallel movement. The relay station 82 is opposite to the terminal of the transport path 81. Ground configuration. A mounting surface 82a of the electronic component D is formed at the front end of the repeating table 82. A barrier rib 82b that is one step higher than the mounting surface 82a is formed on the repeating table 82 so as to face the mounting surface 82a.

In the feeder, the barrier rib 82b has a function of matching the posture of the electronic component D placed on the mounting surface 82a, but occasionally, the electronic component D is delivered to the transport path 81 and the relay station 82. When the time or the transfer table 82 moves in parallel, the electronic component D is stuck or leaned against the barrier rib 82b.

At this time, the highest portion of the electronic component D becomes higher than when the electronic component D is not caught on the barrier rib 82b and is correctly placed on the mounting surface 82a. Therefore, the holding portion 2 which is lowered on the premise that the mounting surface 82a is accurately placed is in abnormal contact with the electronic component D in the middle of the lowering.

Therefore, in the electronic component holding device 1, the resistance R caused by the abnormal contact generated during the lowering of the induction holding portion 2, the lever 32 is relatively increased with respect to the voice coil motor 37, and the detection portion 38 detects the rise. Therefore, the collision between the electronic component D and the holding portion 2 can be detected, and the electronic component D which may be defective due to the collision can be extracted.

16 is a partial enlarged view of the position correcting unit. The position correcting unit includes a guiding member 83 that corrects the posture of the electronic component D. In the guide member 83, a truncated cone-shaped hole 83a which becomes narrower as it approaches the bottom is formed. When the electronic component D is inserted into the hole 83a of the guiding member 83 by the holding portion 2, the posture of the electronic component D changes in accordance with the shape of the inner wall of the hole 83a. The position correcting unit corrects the electronic component D to a desired posture by causing the posture change.

When the electronic component D is inserted into the guiding member 83, the depth of the inserted electronic component D is adjusted in advance. In other words, combined with the size of the electronic part D, in advance The amount of drop of the holding portion 2 is determined. However, occasionally, there will be a case where the guiding member 83 and the electronic component D are in abnormal contact due to the unevenness of the size or thickness of the electronic component D or the unevenness of the posture of the electronic component D held by the holding portion 2.

At this time, in order to insert the electronic component D into an aperture narrower than the size thereof, an abnormal resistance R which is larger than the normal resistance generated when the posture of the inner wall of the guide member 83 is changed is generated.

Therefore, in the electronic component holding device 1, the lowering force acts on the holding portion 2 via the rod 32 by the lifting motor 4. In the downward force, the normal resistance generated when the posture of the inner wall of the guide member 83 is changed is added in advance. Further, by the voice coil motor 37, the lever 32 is given an opposing thrust equal to the reaction received by the lever 32 for the lowering force.

Then, the resistance R caused by the abnormal contact generated during the lowering of the induction holding portion 2, the rod 32 is relatively raised with respect to the voice coil motor 37, and the rise is detected by the detecting portion 38. Therefore, the collision of the electronic component D with the guiding member 83 can be detected, and the electronic component D which may become defective due to the collision can be extracted.

17 is a partial enlarged view of the test contact device. The test contact device is a device that energizes the electronic component D to test electrical characteristics, and includes a guide or socket 84 (hereinafter simply referred to as a socket 84) that exposes the electrode for energization.

In the test contact device, occasionally, when the electronic component D is inserted into the socket 84, the electronic component D is stuck or leaned against the inner side wall of the socket 84.

At this time, the highest portion of the electronic component D becomes higher than when it is correctly inserted into the socket 84. Therefore, the holding portion 2 which is lowered on the premise of being correctly inserted into the socket 84 is in abnormal contact with the electronic component D in the middle of the lowering.

Therefore, in the electronic component holding device 1, the resistance R caused by the abnormal contact generated during the lowering of the induction holding portion 2, the lever 32 is relatively increased with respect to the voice coil motor 37, and the detection portion 38 detects the rise. Therefore, it is possible to detect the collision of the electronic component D with the holding portion 2, thereby extracting the electronic component D which may become defective due to the collision.

(Other embodiments)

The embodiments of the present invention have been described above, and various omissions, substitutions and changes may be made without departing from the spirit of the invention. Further, the embodiment or the modifications thereof are included in the scope and spirit of the invention, and are included in the invention described in the claims and their equivalents.

For example, in the present embodiment, a case where a servo motor is used as the lift motor 4 has been described as an example. However, any known one such as a stepping motor can be applied as the motor. Further, although the suction nozzle has been described as an example of the holding portion 2, an electrostatic adsorption method, a Bernoulli chuck method, or a chuck mechanism that mechanically holds the electronic component D may be disposed.

Furthermore, both of the compression springs 23, 36 may be included, or may be included, or both may not be included, and corresponding to the manner, the counter-force Fopp equivalent to the reaction force Fcr received by the rod 32 may be generated. . That is, the lowering force Fr includes a force that lowers only the holding portion 2 of the uncompressed springs 23, 36, a force that resists the compression of the compression spring 23 only by the holding portion 2, or a difference in the elastic force against the compression springs 23, 36. The force at which the portion 2 descends and the reaction force Fcr correspond to the downward force Fr.

Further, the control unit 5 of the electronic component holding device 1 may be included in the electronic component holding device 1, or the control unit 75 included in the electronic component conveying device 7 may perform the same processing. Moreover, the drop of the holding unit 2 during the abnormality detection is suspended and raised. It is not limited to the insertion processing of the bag body 62 of the carrier tape 61, and it is of course also applicable to the abnormality detection in all the other step processing units 74.

Further, although the case where the various step processing units 74 are disposed in one turntable 72 is exemplified, the transport mechanism may be a linear transport method, or a plurality of turntables 72 may constitute one transport path 71. The various step processing units 74 are not limited to the above-described types, and can be replaced with various step processing units 74, and the arrangement order can be appropriately changed.

1‧‧‧Electronic parts holding device

2‧‧‧ Keeping Department

3‧‧‧Extrusion

4‧‧‧ Lifting motor

6‧‧‧Tape unit

21‧‧‧ Arm

22‧‧‧ Bearing

23‧‧‧Compressed spring

24‧‧‧Flange

25‧‧‧Connectors

31‧‧‧Linear guide

32‧‧‧ rods

33‧‧‧Frame

33a‧‧‧ Lower arm

33b‧‧‧ upper arm

34‧‧‧Cam followers

35‧‧‧ bearing

36‧‧‧Compression spring

37‧‧‧ voice coil motor

38‧‧‧Detection Department

41‧‧‧Cylinder cam

61‧‧‧ Carrying belt

62‧‧‧ bag body

D‧‧‧Electronic parts

Claims (11)

An abnormal contact detecting method, which is an abnormal contact detecting method of an electronic component holding device for an electronic component, wherein the electronic component holding device has a lifting motor, and the lifting motor causes a lever supported by the voice coil motor and the The holding mechanism of the electronic component is lowered together via the lever, and the abnormal contact detecting method is characterized in that the lowering force acts on the holding mechanism via the lever by the lifting motor, by The voice coil motor imparts an opposing thrust force equal to a reaction force with respect to the lever member of the lowering force to the lever member, which is reflected by an abnormal resistance generated by the lowering of the retaining mechanism The lever detects an increase in the relativeivity of the voice coil motor, and detects an abnormal contact of the electronic component in the middle of the lowering by detecting the rise of the lever. The abnormal contact detecting method according to claim 1, wherein the holding mechanism for holding the electronic component is lowered toward a bag body of the carrier tape, and the electronic component is lowered while contacting the carrier tape The rod reflected by the generated resistance detects a rise in the relative rotation of the voice coil motor, and by detecting the rise of the rod, detecting the midway to the lowering Contact of the carrier tape. Such as the abnormal contact detection method described in item 1 or 2 of the patent application scope The method wherein, if the rise of the rod is generated, the lowering is stopped and the holding mechanism is raised. The abnormal contact detecting method according to any one of claims 1 to 3, wherein, if the rise of the rod is generated, the contact of the electronic component in the middle of the lowering is notified . An electronic component holding device for delivering an electronic component, comprising: a holding mechanism capable of lifting and lowering the electronic component while being lifted toward an delivery portion by an external force; and a lifting motor generating a lowering force of the holding mechanism a lever member that is slidably disposed relative to the holding mechanism and abuts against the holding mechanism to transmit the downward force generated by the lifting motor to the holding mechanism; a voice coil motor The lever imparts an opposing thrust equal to a reaction against the lever due to the lowering force acting on the retaining mechanism; and a detecting mechanism generated in the lowering of the retaining mechanism The rod reflected by the abnormal resistance detects the rise in the relativeity of the voice coil motor. The electronic component holding device according to claim 5, wherein the holding mechanism is configured to hold the electronic component while being lowered toward a bag body as a carrier tape of the delivery portion, and the detecting mechanism is The lever member detects the rise in the relative polarity of the voice coil motor as reflected by the resistance generated when one side of the carrier member is lowered. The electronic component holding device according to Item 5 or 6, wherein the holding mechanism stops the lowering when the rising of the lever is detected by the detecting mechanism, and causes the lowering The maintenance organization is rising. An electronic component transporting apparatus that transports electronic components to various step processing units arranged on a transport path, and delivers the electronic components to the step processing unit, characterized by comprising: a holding mechanism that can hold the electronic body while holding The part is lifted and lowered by an external force; the transport motor is configured to surround the holding mechanism along the transport path, and the holding mechanism is stopped above the delivery portion of the step processing unit; a lowering force of the holding mechanism; the lever member is hoistably disposed above the holding mechanism stopped above the delivery portion, and abuts against the holding mechanism to generate the a downward force is transmitted to the retaining mechanism; a voice coil motor imparting a counter thrust to the lever, the counter thrust being equal to a reaction to the rod due to the lowering force acting on the retaining mechanism And a detecting mechanism for the voice coil motor reflected by the abnormal resistance generated in the lowering of the holding mechanism Detecting relative increases. The electronic component handling device according to claim 8, wherein the holding mechanism lowers the bag toward the carrier of the carrier tape as the delivery portion while holding the electronic component, and the detecting mechanism The lever member detects the rise in the relative polarity of the voice coil motor as reflected by the resistance generated when one side of the carrier member is lowered. The electronic component handling apparatus according to claim 8 or 9, further comprising a defective product discharging mechanism of the electronic component, wherein the holding mechanism detects the rise of the lever by the detecting mechanism At this time, the lowering is stopped, the holding mechanism is raised, and the electronic component is transferred to the defective product discharging mechanism. The electronic component handling device according to any one of claims 8 to 10, further comprising a notification mechanism, wherein the notification mechanism causes the lowering of the lower portion if the rise of the lever is generated The electronic component notifies the contact of the carrier tape.