JPH11177280A - Automatic electronic component supplying equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To feed a carrier tape at a desired feed speed by linking a first moving body that abuts on the cam plane of a cam member with a second moving body on the outer circumference and by mounting a feeding member to be engaged/disengaged with the feed hole of the carrier tape. SOLUTION: The cam plane of a cam member 2 is provided with upper and lower horizontal receiving parts 11a and 11b and right and left vertical receiving parts 11c and 11d, and a first moving body 3a makes ascending/ descending motion and progressing/retreating motion by the rotation of the cam member 2 by the difference between the large diameter part 2a and the small diameter part 2b of the cam member 2. A second moving body 3b makes ascending/descending motion or progressing/retreating motion by the rotation of the cam member 2, being engaged with the first moving body 3a. A feeding member 4 is mounted at a suitable position of the first moving body 3a, for example, at the upper front edge part in the feeding direction, and is freely engaged/disengaged with the feed hole of the carrier tape. The feed member 4 which feeds the carrier tape is driven by a drive means 6 such as a motor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic electronic component feeding apparatus capable of stably and reliably feeding pitch of electronic components housed in a carrier tape.

[0002]

2. Description of the Related Art Conventionally, in the industry of assembling electronic parts, an automatic device for feeding electronic parts housed in a carrier tape to a mounting machine at a predetermined pitch is disclosed, for example, in Japanese Patent Publication No. 59-59.
-7611, JP-A-5-196112, JP-A-59-228798, and JP-A-63-1785.
Various publications are known from JP-A-92-92 and the like.

[0003] In these apparatuses, an air cylinder is used as a drive source for feeding a carrier tape, and a ratchet mechanism is adopted as a mechanism for feeding the pitch.

[0004] Therefore, in an apparatus using an air cylinder as a drive source, the operation state is instantaneously performed, the feed speed of the carrier tape to be sent becomes shocking, and the electronic components inserted into the carrier tape are removed. The impact vibration causes dancing, which causes inconvenience in receiving electronic components in the mounting machine.

In the air cylinder type, a delay may occur in response to the driving air, and the responsiveness of the feed mechanism is reduced, thereby causing a supply error of the electronic component due to a poor connection with the mounting machine.

[0006] In the air cylinder type, since the feed portion operates rapidly, it is difficult to control the feed speed of the carrier tape itself, and the feed speed is not stable.

Further, in the apparatus using the ratchet mechanism as the feed mechanism, a so-called reverse rotation preventing effect that the carrier tape does not recede can be obtained. Because of the movement, the positioning of the carrier tape becomes unstable, which causes a failure in taking out the electronic component in the mounting machine, and it is difficult to change the feed pitch.

[0008] In particular, in the device using the combination of the air cylinder and the ratchet mechanism, the device itself becomes complicated, maintenance is troublesome, and the device cost increases.
And other various problems.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a cam member is fixed to a driving shaft rotatably supported in one direction by a driving means. A first moving body that contacts the cam surface of the member is linked to a second moving body on the outer periphery, and a feed member that can be freely disengaged from a sending / receiving hole of the carrier tape by moving up and down and moving forward and backward of the first moving body. By mounting the carrier tape, the feed of the carrier tape becomes smooth, stable and reliable supply of electronic components becomes possible, and an object of the present invention is to provide an electronic component automatic supply device capable of feeding the carrier tape at a desired feed speed. I have.

[0010]

Means of the present invention for achieving the above object are to accommodate a large number of electronic components in a long carrier tape at a predetermined pitch, and to accommodate a large number of electronic components in accordance with the accommodation pitch of the electronic components. A drive shaft, which is rotatably supported in one direction by a driving means, and is fixed to the drive shaft, in an electronic component automatic supply device that conveys the electronic component toward a processing machine by a perforated receiving hole. A cam member, a first moving body which comes into contact with the cam surface of the cam member and moves up and down and reciprocates by the rotating motion of the cam member. The electronic component automatic supply device includes a second moving body that moves up and down or moves forward and backward, and a feed member that is attached to the first moving body and that is detachably engageable with a feed receiving hole of a carrier tape.

[0011] Then, a large number of electronic components are accommodated in a long carrier tape at a predetermined pitch, and the electronic components are directed toward the processing machine by sending and receiving holes formed in a large number according to the accommodation pitch of the electronic components. In an automatic electronic component feeding device, a driving shaft rotatably supported in one direction by a driving means, a cam member fixed to the driving shaft, and a cam member abutting on a cam surface of the cam member. A first moving body that moves up and down and moves forward and backward by the rotational movement of the first moving body, a second moving body that moves up and down or moves forward and backward by the rotating movement of the cam member by engaging with the first moving body, and attached to the first moving body. A feed member which can be freely disengaged from the feed receiving hole of the carrier tape,
In conjunction with the first or second moving body actuated by the cam member, when the sending member is engaged with the sending and receiving hole of the carrier tape, the other sending and receiving hole is in a disengaged state, The electronic component automatic supply device is provided with positioning means for engaging the feeding member with another feeding hole when the feeding member is not engaged with the feeding hole of the carrier tape.

The positioning means comprises an arm having one end attached to the second moving body, and a stop member which is linked to the other end of the arm and which can be raised and lowered.

Further, detecting means for detecting the feeding operation of the carrier tape by the feeding member in connection with the driving means or at least one of the members operated by the driving means, and connected to the detecting means. Control means.

Furthermore, the cam member fixed to the drive shaft is
The rotation is controlled by a rotation speed variable means connected to the driving means, and the feed pitch of the electronic component on the carrier tape is set arbitrarily by the rotation speed of the cam member.

The rotation speed of the cam member fixed to the drive shaft is controlled by a rotation speed variable means connected to the drive means, and the feed speed of the electronic component on the carrier tape is arbitrarily set by the rotation speed of the cam member.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of an electronic component automatic supply apparatus according to the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, reference numeral A denotes an electronic component automatic supply device, and as shown in FIG. 4, a large number of electronic components c are accommodated in a long carrier tape b at a predetermined pitch. This electronic component c is processed by a processing machine (not shown) by a plurality of feed receiving holes d formed in a series according to the pitch.
The drive shaft 1 and the cam member 2
, The first moving body 3a, the second moving body 3b,
And the positioning means 5.

The driving shaft 1 is provided with driving means 6
This makes it rotatable in one direction and is supported by an airframe (not shown).

The above-mentioned cam member 2 is fixed to the drive shaft 1 and is arranged at a depth equal to or greater than the depth of the feed hole d of the carrier tape b in the longitudinal direction, that is, at the pitch of the feed hole d. In addition, it is pivotally supported in a fan-shaped eccentric state composed of a large-diameter portion 2a and a small-diameter portion 2b capable of obtaining a moving amount at least matching the accommodation pitch of the electronic component c.

The driving means 6 uses a conventional motor 8 having a speed reducer 7. The driving means 6 includes a detecting means, a rotation speed changing means, a rotation speed changing means and the like which will be described later. It is connected via control means.

The driving means 6 may be an air cylinder as a power source other than the motor, and may be a means (not shown) for converting a linear motion into a rotary motion. Any means can be employed as long as it can provide rotational drive.

In the first moving body 3a, the cam surface of the cam member 2 has upper and lower horizontal receiving portions 11a and 11b and left and right vertical receiving portions 1a.
1c and 11d are provided, and the rotational movement of the cam member 2 causes the parallelogram-shaped elevating movement and the reciprocating movement by the dimensional difference between the large-diameter portion 2a and the small-diameter portion 2b.

The above-mentioned second moving body 3b is
a, which moves up and down or moves forward and backward by the rotational movement of the cam member 2. In the case shown in FIG. 1, the left and right sides of the second moving body 3b are moved in the left and right directions by vertical guides 10, 10. Forward and backward movement is regulated.

When the large-diameter portion 2a of the cam surface of the cam member 2 rotates in the direction of the arrow p in FIG. 1, the first movable body 3a is brought into contact with the upper horizontal receiving portion 11a of the first movable body 3a. Since the upper sliding portion 12a is in contact with the upper horizontal receiving portion 13a of the second moving body 3b, the second moving body 3b is raised.

Subsequently, until the large diameter portion 2a of the cam member 2 comes into contact with the left vertical receiving portion 11c, only the first moving body 3a has its upper sliding portion 12a and lower sliding portion 12b connected to the second moving body 12a. 3b
And moves laterally in the feed direction of the carrier tape b along the upper and lower lateral receiving portions 13a and 13b.

Further, until the large-diameter portion 2a of the cam member 2 comes into contact with the lower lateral receiving portion 11b of the first moving body 3a, the first moving body 3
a lower sliding portion 13b of the second movable body 3b
, The second moving body 3b is lowered.

Then, the right vertical receiving portion 11d of the first moving body 3a
Until the large-diameter portion 2a of the cam member 2 comes into contact with the first moving body 3a, only the first sliding body 12a and the lower sliding part 12b
Are the upper lateral receiving portion 13a and the lower lateral receiving portion 1 of the second moving body 3b.
It moves laterally in the backward direction along 3b.

Therefore, in the case shown in FIG. 1, the second moving body 3b is only a vertical movement without moving forward and backward.

Further, in the case shown in FIG.
The upper and lower sides of b are restricted from moving up and down by the horizontal guides 15 and 15.

When the large-diameter portion 2a of the cam surface of the cam member 2 rotates in the direction of arrow p in FIG. 2, the large-diameter portion 2a is brought into contact with the upper horizontal receiving portion 11a of the first moving body 3a. Only the first movable body 3a has its left sliding portion 12c and right sliding portion 12d provided with the left vertical receiving portion 13c of the second movable body 3b.
And it moves up and down along the right vertical receiving portion 13d.

Subsequently, until the large diameter portion 2a of the cam member 2 comes into contact with the left vertical receiving portion 11c, the left sliding portion 1 of the first moving body 3a is moved.
2c and the right sliding portion 12d are in contact with the left vertical receiving portion 13c and the right vertical receiving portion 13d of the second moving body 3b, so that the second moving body 3b is transported along the horizontal guides 15, 15. Slide in the feed direction of b.

Further, until the large-diameter portion 2a of the cam member 2 comes into contact with the lower lateral receiving portion 11b of the first moving body 3a, the first moving body 3
a only has its left sliding portion 12c and right sliding portion 12d
Left vertical receiving portion 13c and right vertical receiving portion 13d of the second moving body 3b
It moves down along the vertical direction.

Then, the right vertical receiving portion 11d of the first moving body 3a
Until the large diameter portion 2a of the cam member 2 comes into contact with the left moving portion 12c and the right sliding portion 12d of the first moving body 3a, the left vertical receiving portion 13c and the right vertical receiving portion 13d of the second moving body 3b. Therefore, the second moving body 3b is slid in the retreating direction along the lateral guides 15, 15.

Therefore, in the case shown in FIG. 2, the second moving body 3b is only an advancing / retracting movement without performing a vertical movement.

The above-mentioned feed member 4 is attached to an appropriate position of the first moving body 3a, for example, at the upper front end in the transfer direction.
The carrier tape b is detachably engageable with the feed receiving hole d, and is formed in a feed claw shape having a sharp tip so as to be easily engaged with the feed receiving hole d. One or more are provided so that they can engage simultaneously.

When the feed member 4 is engaged with the feed hole d of the carrier tape b, the positioning member 5 is not engaged with the other feed hole d.
Is disengaged from the feed receiving hole d of the carrier tape b,
By engaging with the other feed receiving hole d, the removal of the carrier tape b at the time of taking out the electronic component c in the processing machine is prevented.

In the case of the lifting type of the second movable body 3b shown in FIG. 1, the structure is provided at an appropriate position in the transport direction of the carrier tape b which does not interfere with the feed member 4, and is operated by the cam member 2. One end of an arm 18 rotatably supported on a pivot 17 provided on a body (not shown) is engaged with a locking shaft 16 provided on a front edge of the second movable body 3b. A roller 19 is pivotally supported at the other end of the arm 18.

In the vicinity of the arm 18, the roller 19 of the arm 18 is engaged with a receiving recess 22 formed on a lifting body 21 which is vertically engaged with a vertical guide 20.

Further, on the upper part of the elevating body 21, a stopper member 23 which is engaged and disengaged with one or more of the receiving holes d of the carrier tape b is attached.

As a result, when the second moving body 3b rises, the elevating body 21 is pushed down, the stopper member 23 is disengaged from the receiving / receiving hole d of the carrier tape b, and when the second moving body 3b descends, the elevating body is lowered. 21 and its stop member 2
3 is locked in the receiving hole d of the carrier tape b.

The lifting member 21 always has the stopper member 2
In some cases, a resilient device (not shown) may be provided to urge the side 3 into engagement with the feed receiving hole d.

The position of the positioning means 5 in the case of the reciprocating type of the second moving body 3b as shown in FIG. 2 is provided at an appropriate position in the transfer direction of the carrier tape b which does not interfere with the feed member 4. A body (not shown) is attached to a locking shaft 24 provided at the front edge of the first moving body 3a operated by the cam member 2.
One end of an arm 26 rotatably supported by a pivot 25 provided in the arm 26 is engaged, and a roller 27 is pivotally supported on the other end of the arm 26.

The roller 27 of the arm 26 is engaged with a receiving recess 30 formed in an elevating body 29 which is engaged with a vertical guide 28 so as to be movable up and down in the vicinity of the arm 26.

Further, on the upper part of the elevating body 29, a stopper member 23 which is engaged and disengaged with one or more of the receiving holes d of the carrier tape b is attached.

As a result, when the first moving body 3a rises, the elevating body 29 is pushed down, the stopper member 23 is disengaged from the feed / receiving hole d of the carrier tape b, and when the first moving body 3a descends, the elevating body is lowered. 29, and the stop member 2
3 is locked in the receiving hole d of the carrier tape b.

The positioning means 5 is not only a means operated by the operation of the first or second moving body 3a, 3b, but also a driving means 6 linked to the first or second moving body 3a, 3b. Any other members that are operated by this operation, that is, the drive shaft 1, the cam member 2, the feed member 4, and any other means that can be operated by the operation of the control means 31 described later can be adopted. is there.

For example, although not shown, a detecting means 30 described later associated with the first or second moving body 3a, 3b or the like.
The stop member 23 is moved up and down by an air cylinder or a motor which is operated by the signal of the above, or the stop member 23 is controlled by an air cylinder or a motor controlled by the control means 31 based on a rotation pulse signal of the drive shaft 1 or the motor 8. Can be raised and lowered.

In FIGS. 1 and 2, reference numeral 30 denotes a detecting means, which is at least one of the driving shaft 1, the cam member 2, the first or second moving bodies 3a and 3b, and the feeding member 4 operated by the driving means 6. In connection with the member or the driving means 6 itself, the feeding means 4 detects one feeding operation (one pitch) of the carrier tape b, and transmits this detection signal to the control means 31 composed of a computer or the like to drive. The rotation of the drive shaft 1 is stopped by operating the means 6 and a clutch (not shown) built in the drive shaft 1.

The above members 1, 2, 3a, 3
When linked to one of the members b and 4, conventional means such as a limit switch, a photoelectric tube or a proximity switch is used, and in this embodiment, the first moving body 3a is used.
When the dog 32 attached to the sensor comes into contact with the detection means 30 by the limit switch, a detection signal of one pitch transfer is issued.

When used for the drive means 6 and the drive shaft 1, a conventional one such as a rotary pulse detector or another rotary encoder may be employed.

Therefore, in the apparatus A of the first embodiment of the present invention constructed as described above, according to the example shown in FIG. 1 in which the second moving body 3b only moves up and down, the driving means 6 is connected continuously. When the drive shaft 1 is rotated by driving, the cam member 2 fixed to the drive shaft 1 rotates in the direction of the arrow p.

As a result, as shown in FIG. 3A, the large-diameter portion 2a, which is the cam surface of the cam member 2, comes into contact with the left vertical receiving portion 11a of the first moving body 3a. As shown in FIG. 3B, the first moving body 3a and the second moving body 3b are lifted up along the vertical guide 10, and the feed member 4 attached to the first moving body 3a is shown in FIG. It rises from the lower standby position and engages with the feed receiving hole d of the carrier tape b.

Further, as shown in FIG. 3C, until the large diameter portion 2a comes into contact with the left vertical receiving portion 11c due to the rotation of the cam member 2, the carrier tape b is engaged with the feed receiving hole d.
Is advanced by one electronic component c. In the processing machine, the electronic component c on the carrier tape b is taken out by a suction nozzle or the like.

At this time, in the positioning means 5 linked to the second movable body 3b, the arm 18 is rotated by the upward movement of the second movable body 3b due to the rotation of the cam member 2, and the roller of the arm 18 is rotated. Since the lowering member 19 lowers the elevating body 21, the stopper member 23 of the elevating body 21 is lowered as shown in FIG.
The movement of the carrier tape b is not hindered.

That is, when the feeding member 4 is made of the carrier tape b
Is engaged in the feed receiving hole d, the feed receiving hole d
The stop member 23 is in a non-engagement state with the other feed receiving hole d. When the feed member 4 is in a non-engagement state with the feed receiving hole d of the carrier tape b, the feed receiving hole d Since the stopper member 23 is engaged with the other receiving hole d, the carrier tape b is always fixed at a predetermined position, and the carrier tape b does not move when taking out the electronic component c.

Then, by the cam member 2 which rotates further,
When the large diameter portion 2a comes into contact with the lower horizontal receiving portion 11b of the first moving body 3a, the first and second moving bodies 3a, 3b are lowered along the vertical guide 10, as shown in FIG. Thus, the feed member 4 is lowered, and the engagement of the feed member 4 with the feed receiving hole c is released.

Next, when the large diameter portion 2b comes into contact with the right vertical receiving portion 11d of the first moving body 3a due to the rotation of the cam member 2,
As shown in FIG. 3E (start position shown in FIG. 3A), the first mobile unit 3a is retracted to return to the standby position, and the first mobile unit 3a which is retracted to the detection unit 30 is moved. The dog 32 makes contact and emits the signal, and this signal is transmitted to the control means 31 to stop the rotation of the motor 8 in the drive means 6 and, accordingly, the movement of the moving body 3 is stopped.

The driving means 6 is activated again by a signal from a processor or a signal from a delay means or the like.
Is performed via

At this time, in the positioning means 5 linked to the second moving body 3a, the downward movement of the second moving body 3a caused by the rotation of the cam member 2 causes the arm supported by the second moving body 3a to be pivotally supported. As the roller 18 is rotated and the roller 19 provided at the other end of the arm 18 raises the elevating body 21 which engages with the receiving recess 12, as shown in FIG. 3 (e) (FIG. 3 (a)
(Start position shown in FIG. 3), the movement of the carrier tape b is restricted in order to raise the stopper member 23 of the elevating body 21.
Since the carrier tape b does not move, the tape is fed at a predetermined pitch by repeating this movement.

According to the apparatus A of the embodiment, the cam member 2 is formed as a single unit and has a compact structure. In addition, the installation can be performed smoothly, space can be saved, and the cost of the apparatus A can be reduced by providing the expensive cam member 2 alone.

The cam member 2 fixed to the drive shaft 1 is
The rotation can be controlled by the rotation speed varying means 35 connected to the driving means 6, and the feed pitch of the electronic component c on the carrier tape b can be arbitrarily set by changing the rotation speed of the cam member 2.

The rotation speed varying means 35 is electrically controlled. For example, any means such as a variable resistor or a frequency variable device can be selected. It is possible to sequentially respond to a change in the tape feed amount of the carrier tape b.

Further, the rotation speed of the cam member 2 fixed to the drive shaft 1 is controlled by a rotation speed varying means 36 connected to the driving means 6. The feed speed of the component c can be arbitrarily set.

The rotational speed varying means 36 can be selected by any means such as a variable resistor or a frequency variable which is electrically controlled, and can be selected according to the moving speed of the electronic component mounting machine. The supply speed of the parts can be tuned appropriately.

[0065]

As described above, in the present invention, the feed member for transferring the carrier tape is driven by the drive means such as a motor, so that the operating speed of each member operated by the drive means is constant and stable. As a result, the electronic components contained in the tape due to the transfer impact are prevented from being deflected, and the output which is accelerated / decelerated by the cam characteristics is obtained, so that the carrier tape can be smoothly fed.

The driving means using a motor is excellent in responsiveness such as starting and stopping, and easy to control the feed speed of the carrier tape.

When the feed member is engaged with the feed hole of the carrier tape, the other feed hole is not engaged. When the feed member is not engaged with the feed hole of the carrier tape, the other position is not engaged. , The movement of the carrier tape is always restricted by the feed member, so that the positioning is stabilized and the tape is not deviated when the electronic component is taken out.

Detecting means for detecting the feeding operation of the carrier tape by the feeding member in association with the driving means or at least one of the members operated by the driving means, and control means connected to the detecting means With this arrangement, it is possible to easily change the feed pitch, such as changing the type of tape, and to change the feed pitch of the electronic component and the It is possible to cope with the variable feed speed of parts. And so on.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a first embodiment of an electronic component automatic supply device according to the present invention.

FIG. 2 is a schematic front view showing a second embodiment of the electronic component automatic supply device according to the present invention.

FIG. 3 is a schematic front view showing an operation state in FIG. 1;

FIG. 4 is a perspective view showing a part of a carrier tape used in the apparatus shown in FIG.

[Explanation of symbols]

 Reference Signs List A Automatic electronic component supply device b Carrier tape c Electronic component d Send / receive hole 1 Drive shaft 2 Cam member 3a First moving body 3b Second moving body 4 Sending member 5 Positioning means 30 Detecting means 31 Control means 35 Rotation speed variable means 36 Rotation speed variable means

Claims (6)

[Claims] 1. A long carrier tape containing a large number of electronic components at a predetermined pitch, and sending the electronic components toward a processing machine by sending and receiving holes formed in a large number in accordance with the accommodation pitch of the electronic components. An automatic electronic component feeding device, comprising: a drive shaft rotatably supported in one direction by a drive means; a cam member fixed to the drive shaft; and a cam member abutting on a cam surface of the cam member. A first moving body that moves up and down and moves forward and backward by the rotational movement of the first moving body, a second moving body that moves up and down or moves forward and backward by the rotating movement of the cam member by engaging with the first moving body, and attached to the first moving body. An electronic component automatic supply device, comprising: a feed member that is detachably engaged with a feed receiving hole of the carrier tape. 2. A large number of electronic components are accommodated in a long carrier tape at a predetermined pitch, and the electronic components are directed toward a processing machine by sending and receiving holes formed in a large number according to the accommodation pitch of the electronic components. An automatic electronic component feeding device, comprising: a drive shaft rotatably supported in one direction by a drive means; a cam member fixed to the drive shaft; and a cam member abutting on a cam surface of the cam member. A first moving body that moves up and down and moves forward and backward by the rotational movement of the first moving body, a second moving body that moves up and down or moves forward and backward by the rotating movement of the cam member by engaging with the first moving body, and attached to the first moving body. A feed member which is detachably engageable with a feed / receiving hole of the carrier tape; and the feed member is engaged with the feed / receiving hole of the carrier tape in association with the first or second moving body operated by the cam member. When And a positioning means for engaging with another feed receiving hole when the feed member is disengaged from the feed receiving hole of the carrier tape in the non-engaged state. Electronic parts automatic supply device. 3. The positioning device according to claim 2, wherein the positioning means comprises an arm having one end attached to the second movable body, and a stop member which is linked to the other end of the arm and which can move up and down. Electronic parts automatic supply device. 4. A detecting means for detecting a feeding operation of a carrier tape by a feeding member in connection with at least one of the driving means or each member operated by the driving means, and connected to the detecting means. The electronic component automatic supply device according to claim 2, further comprising a control unit. 5. The rotation of the cam member fixed to the drive shaft is controlled by a rotation speed variable means connected to the drive means, and the feed pitch of the electronic component on the carrier tape is arbitrarily set by the rotation speed of the cam member. The electronic component automatic supply device according to claim 1 or 2, wherein: 6. The cam member fixed to the drive shaft is controlled in rotation speed by a rotation speed variable means connected to the drive means,
4. The electronic component automatic supply device according to claim 2, wherein a feed speed of the electronic component on the carrier tape is arbitrarily set according to a rotation speed of the cam member.