JPH0780548B2 - Electronic component supply device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component insertion device suitable for supplying odd-shaped electronic components and the like in an electronic component insertion device.

(Summary of the Invention) The present invention is an electronic component supply device suitable for supplying odd-shaped electronic components and the like, and has a structure in which an electronic component in a cylindrical stick is pushed out by a spring member and transferred to a predetermined electronic component transfer position. , The reliability of the electronic component supply is improved.

(Prior Art) Conventionally, from the applicant, an electronic component supply device that holds a component magazine accommodating electronic components at an angle of 45 degrees with respect to a horizontal plane and transfers the electronic components in the component magazine using gravity. Is proposed in No. 62-34524.

(Problems to be Solved by the Invention) By the way, with the conventional structure for transferring the electronic components in the component magazine by utilizing gravity, when the number of the electronic components in the magazine decreases at the time of supplying the components, that much There is a problem that the force for lowering the electronic component becomes weaker, and a mechanism that horizontally changes the posture of the electronic component so that the electronic head supplied in an inclined state with respect to the horizontal plane can be chucked by the insertion head is required. Become.

In view of the above points, the present invention improves the reliability of electronic component supply by providing a spring member into a cylindrical stick that houses a large number of electronic components in a row and forcibly pushing out the electronic components. An object of the present invention is to provide an electronic component supply device that simplifies the mechanism by eliminating the need to change the posture of the electronic component with respect to the insertion head.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention holds a cylindrical stick that accommodates a large number of electronic components in a single row arrangement in a multi-stacked state, and one end of the cylindrical stick. A spring member drive unit having a spring member feeding and rewinding function is provided on the section side,
In an electronic component supply device that pushes out an electronic component in the cylindrical stick by the spring member and transfers the electronic component to a predetermined electronic component transfer position, the spring member drive unit has a fixed support frame and a fixed positional relationship with respect to the support frame. A rotary shaft that rotates with the rotary shaft, a drum that is rotatably fitted on the rotary shaft and that winds the spring member, a mainspring that urges the drum in a rotational direction that winds the spring member, and the rotary shaft. A rotation transmitting disk that is inserted into the rotary frame and receives the rotational force of the rotary shaft but is slidable in the axial direction of the rotary shaft; A drum return prevention disc movable in any direction, and the rotation transmission disc and the drum return prevention disc are arranged on the inner peripheral side of the drum. At the first position of the return prevention disc with respect to the rotation axis, the inner peripheral surface of the drum and the rotation transmission disc transmit the rotation force through the engagement means in a direction to extend the spring member. The rotation operation of the drum is enabled, and the inner peripheral surface of the drum and the disk for preventing drum return prevent the rotation of the drum in the direction of rewinding the spring member via the one-way rotation engagement means, At the second position where the transmission disc and the drum return prevention disc have moved in the axial direction of the rotation shaft from the first position, the engagement means between the inner peripheral surface of the drum and the rotation transmission disc is At the same time as being disengaged, the one-way rotational engagement means between the inner peripheral surface of the drum and the drum return prevention disc is also disengaged to execute the rotating operation of the drum in the direction of rewinding the spring member by the mainspring. .

(Operation) In the electronic component supply device of the present invention, the spring member is wound around the drum, and the spring member is unwound by the rotation of the drum to forcibly push out the electronic component inside the cylindrical stick. The transfer force of the electronic components is constant regardless of the number of electronic components, and the electronic component supply operation is reliable. Further, it is not necessary to use gravity to transfer the electronic components, and the cylindrical stick can be horizontally arranged. In this case, the posture of the electronic component (the most advanced one) at the electronic component transfer position is changed. The leading-edge electronic component can be directly chucked by the direct insertion head without any operation, and the mechanism can be simplified. Furthermore, since the spring member is fed and rewound by rotating the drum, the feeding and rewinding operations of the spring member are reliable, and the reliability of the operation can be improved.

(Embodiment) An embodiment of an electronic component supply device according to the present invention will be described below with reference to the drawings.

FIG. 1 shows the left side structure of the electronic component supply apparatus 1, which is a left side stick holder 3A fixed to the apparatus frame 2 side.
And a spring member formed by winding a wire into a long coil spring shape
Spring member drive unit 4 for feeding and rewinding 10
And the stick exchange unit 5 and the like.

FIG. 2 shows the configuration on the right side of the electronic component supply device 1, which is a right side stick holder 3B fixed to the device frame 2.
And the component guide 6 and the like fixed to the holder 3B.

FIG. 3 is a perspective view showing an overall schematic configuration of the electronic component supply apparatus 1. Further, the electronic component supply apparatus 1 chucks the electronic component 20 sent to the component transfer position and inserts it into the printed circuit board side. An insertion head 7 for carrying out is shown.

1 to 3, an elongated hole 11 is formed in the device frame 2 in the lateral direction, and a vertical portion of a mounting base 12 is fastened and fixed by a bolt 13 passing through the elongated hole 11. The left stick holder 3A is fixed to the mounting base 12, and the spring drive unit 4 and the stick exchanging unit 5 are assembled on the mounting base 12. This is because the length of the rectangular tube-shaped stick 15 differs depending on the type of electronic parts to be housed.
Adjust the position of 3A and regulate the positions of both ends of the rectangular tubular stick 15 with the left and right stick holders 3A and 3B.

A fixed stick receiver 17 having a support surface 16 that supports the lower surface of the rectangular cylindrical stick 15 is fixed to the lower end of the right stick holder 3B. On the other hand, the stick exchange section 5
Has a slider 18 provided slidably in a lateral direction with respect to the mounting base 12, and the slider 18 has a movable stick receiver.
19 is fixed. Then, in a state where the movable stick receiver 19 projects inside the left side stick holder 3A, the movable stick receiver 19, the fixed stick receiver 17 and the left and right stick holders 3A, 3B form a square tube containing a large number of electronic components arranged in a single row. The sticks 15 can be horizontally held in a stacked state. A spring member 10 formed by winding a wire in the shape of a long coil spring, which is fed from the spring member driving unit 4, enters into the lowermost rectangular cylindrical stick 15 from the left end of the rectangular cylindrical stick 15. As a result, the electronic components (for example, dual in-line IC) 20 arranged inside one example are pushed out.

The stick exchanging portion 5 is further provided with a stick exchanging air cylinder 21 fixed to the mounting base 12, a slider 22 slidably provided in the lateral direction with respect to the mounting base 12, and a tip portion of the slider 22. The anti-drop claw 23 that is fixed to the slider and the middle part are pivotally attached to the mount side with the pin 24, and both ends are the slider 1
A connecting lever 25 loosely attached to 8, 8 and an extension spring 26 for urging the connecting lever 25 in the counterclockwise direction are provided.

The stick exchanging operation of the stick exchanging portion 5 is performed by extending the rod of the stick exchanging air cylinder 21. That is, the slider 22 slides to the right by the rod of the air cylinder 21, the fall prevention pawl 23 enters the second rectangular stick 15 from the bottom, and the slider 18 moves to the left in parallel with this operation. It slides and the movable stick receiver 19 retracts. And the fall prevention claw 23 is 2 from the bottom.
After engaging the second rectangular cylindrical stick 15, the movable stick receiver 19 is disengaged from the lowermost rectangular cylindrical stick 15, and the lowermost rectangular cylindrical stick 15 falls down by its own weight. After that, the rod of the air cylinder 21 returns to the contracted state, the connecting lever 25 moves counterclockwise by the action of the extension spring 26, the movable stick receiver 19 advances and the fall prevention pawl 23 retracts, and is second from the bottom. The engagement with the rectangular cylindrical stick 15 is released. As a result, the second rectangular tubular stick 15 from the bottom drops to the lowest position, and the fixed stick receiver 17 and the movable stick receiver 17
The spring member drive unit 4 supported horizontally at 19 is a motor with reduction gear 30 fixed to the lower surface of the mounting base 12 as shown in FIGS. 1 and 4 to 6.
An inverted L-shaped support frame 31 fixed on the mount 12, and a rewinding air cylinder 32 fixed on the support frame 31.
A drum 34 rotatably fitted around the outer periphery of the rotary shaft 33 of the motor 30, a mainspring mounting frame 35 fixed on the mounting base 12, a central boss portion of the drum 34, and the mounting frame.
35 and a mainspring (winding spring) 36 having both ends fixed thereto. The mainspring 36 biases the drum 34 in the rotational direction in which the spring member 10 is wound.

A shaft 37 is fixed to the motor rotating shaft 33, and the shaft 37
A rotation transmitting disk 38 is slidable in the vertical direction on the outer circumference of the shaft so that the rotational force of the shaft body 37 is received via a pin 39 shown in FIG. As shown in FIG. 6, a pin 40 is arranged and fixed on the rotation transmitting disk 38 so as to project from the outer peripheral surface. Further, a pin 41 is fixed to the drum 34 side so as to project from the inner peripheral surface thereof, and a disc 38 for rotation transmission shown in FIG.
The pin 40 and the pin 41 are engaged with each other at the height position, and the rotation of the rotation transmitting disc 38 is transmitted to the drum 34 through the engagement of the pins 40 and 41 as the engaging means. There is.

Further, a drum return preventing disc 45 is vertically slidably supported on the shaft body 37, and a central boss portion of the disc 45 is prevented from rotating with respect to the inverted L-shaped support frame 31. Engaged. As shown in FIG. 5, on the drum return prevention disc 45, a pin 46 having a beveled surface that serves as a ratchet pawl is slidably arranged in the radial direction.
A compression spring 47 is provided for urging the spring in the protruding direction. The small pin 48 is a stopper that restricts the movement range of the pin 46. In addition, a pin 49 that can be engaged with the pin 46 is provided on the drum 34 side.
Is fixed. In the illustrated case, the number of pins 49 is 9, and the pins 49 are planted at positions that divide the inner circumference of the drum into 9 equal parts. The pin 46 and the pin 49, which are biased by the compression spring 47 in the projecting direction, form a one-way rotational engagement means.

A spring member 10 formed by winding a wire in the shape of a long coil spring is wound around the outer periphery of the drum 34, and the drum 34 rotates in the direction in which the spring member 10 is paid out, that is, in the direction of arrow P in FIG. In this case, even when the drum return prevention disk 45 is at the height position shown in FIG. 4, even if the pin 49 hits by the action of the inclined surface at the tip of the pin 46, the pin 46 retracts and the pin 49 moves.
It does not engage with. On the contrary, when the drum 34 tries to rotate in the reverse direction, the pin 46 hits the pin 49 and prevents the rotation of the drum 34.

A compression spring 55 around the shaft 37 biases the rotation transmitting disc 38 and the drum return preventing disc 45 to the raised position shown in FIG.

In addition, on the mounting base 12, a spring insertion guide 50 for inserting the spring member 10 fed from the spring member driving section 4 into the rectangular cylindrical stick 15, and the spring member 10 is positioned immediately before the spring insertion guide 50. A rewinding detection switch 51 for detecting that the film has been wound up is provided.

The feeding and rewinding operations of the spring member 10 of the spring member driving section 4 are performed as described above. Spring member 10
In the case of unwinding, the rod of the rewinding air cylinder 32 is in a contracted state, and the rotation transmitting disc 38 and the drum return preventing disc 45 are moved to the fourth position by the action of the compression spring 55.
It is in the raised position in the figure. Therefore, the driving force of the motor with reduction gear 30 rotates the rotation transmitting disk 38 via the rotary shaft 33 and the shaft body 37, and the rotation of the disk 38 is performed via the pin 40 and the pin 41 engaged with this. The drum 34 is rotated in the direction of arrow P in FIG. As a result, the spring member 10 is fed from the drum 34 so as to pass through the spring insertion guide 50 and enter the lowermost rectangular cylindrical stick 15. The relationship between the pin 46 on the drum return prevention disk 45 side and the pin 49 on the drum inner circumference side has a function similar to that of a ratchet and does not hinder rotation in the direction of arrow P, but prevents reverse rotation, so it is predetermined. If the motor 30 is stopped after the long spring member 10 is extended, the spring member 10 is substantially maintained at the extended length and stopped (however, only a slight play angle until the pin 46 abuts the pin 46 is the drum.
34 returns. ).

In the case of rewinding the spring member 10, the rods of the rewinding air cylinder 32 are extended to lower the height positions of the rotation transmitting disc 38 and the drum return preventing disc 45 with respect to the shaft 37. As a result, the pins 40, 46 on the disks 38, 45 side and the pins 41, 49 on the drum 34 side are brought into a stepped position where they are not engaged at all. Rewind 10

As shown in FIG. 2, FIG. 8 and FIG. 9, a component guide (chute) 6 having a straight guide groove 60 whose bottom surface is a component sliding surface F is provided on the lower right side of the right stick holder 3B.
Is fixed, and the component guide 6 communicates with the right end opening of the lowermost rectangular cylindrical stick 15. A component retainer 62 for restricting the upper face of the electronic component 20 positioned next to the electronic component transfer position Q is fixed to the upper face of the component guide 6. Further, a component stopper 64 having a stopper surface 63 is fixed to the tip end of the component guide 6 so that the electronic component 20 that has moved on the component sliding surface 60 can abut.

At the tip of the spring member 10, an overload detector 70 as shown in FIG. 7 for detecting that the pressing force is a certain value or more.
Is provided. That is, the insulating support member 72 is fitted inside the coil spring portion of the spring member 10, and the movable contact shaft 73 is attached through the insulating support member 72.
The movable contact shaft 73 is biased in the protruding direction by a compression spring 74 provided in the insulating support member 72, and an insulating head 75 is fixed to the tip of the movable contact shaft 73. The insulating support member 72 has a pair of fixed contacts 76 facing the end of the movable contact shaft 73.
A and 76B are arranged. In addition, 71 is an insulating tube, 77
Is a connection lead wire.

Such an overload detection unit 70 detects that the electronic component 20 is clogged in the rectangular tubular stick 15 or in the middle of the component guide 6 and that the electronic component 20 has disappeared from the rectangular tubular stick 15 and the component guide 6 and the head 75 Is pressed against the force of the compression spring 74 and both fixed contacts 76A and 76B are short-circuited at the end of the movable contact shaft 73 for detection.

As shown in FIGS. 8 and 9, a tip component detection switch 80 is fixed to the tip side of the component guide 6, and the detection roller 81 of the switch 80 is positioned higher than the component stopper 64, and the electronic component 20. It is set so that it is pushed at the height of, but not pushed at the tip of the spring member 10. Therefore,
The detection roller 81 of the switch 80 is pressed when the most advanced electronic component 20 is located at the electronic component transfer position Q as shown in FIG. 8 to detect the presence of the electronic component. As shown in FIG. 9, the roller 81 is not pressed and detects the absence of electronic components.

Next, the overall operation of the electronic component supply device 1 will be described.
Square tubular stick 1 between the left and right stick holders 3A, 3B
Place 5 horizontally in a multi-stacked state, and secure stick holder 1
It is supported by 7 and the movable stick receiver 19 of the stick exchange section 5. Then, the motor 30 with a speed reducer of the spring member drive unit 4 is operated in the lowermost rectangular tubular stick 15 to extend the spring member 10 for a predetermined length, and
The electronic components 20 accommodated in the row arrangement are forced out. As a result, the most advanced electronic component 20 reaches the electronic component transfer position Q at the tip of the linear guide groove 60 of the component guide 6. When the electronic component 20 comes into contact with the stopper surface 63 and stops, the detection roller 81 of the tip component detection switch 80 is pushed, the switch 80 detects the presence of the electronic component, and stops the motor 30 and also FIG. The electronic head at position Q is allowed to be chucked by the insertion head 7, and the most advanced component is chucked by the insertion head 7 and inserted into the printed circuit board.

Since the electronic component delivery position Q becomes vacant due to the electronic component taking-out operation of the insertion head 7, the motor 30 is activated again to extend the spring member 10 and transfer the next electronic component to the position Q. This kind of operation is performed by using the bottom rectangular stick 15
And repeatedly executed until there are no more electronic components in the component guide 6.

When the motor 30 unwinds the spring member 10 after the last electronic component is taken out by the insertion head 7, there is no electronic component, so the tip component detection switch 80 continues to detect the absence of electronic component in the state of FIG. As a result, the feeding operation of the spring member 10 is continued by the motor 30, and the overload detection unit shown in FIG.
The head 75 of the 70 hits the stopper surface 63 and is strongly pressed. As a result, the pair of fixed contacts 76A, 76 of the overload detection unit 70
B is short-circuited and an overload condition (pressing force above a certain value) is detected. Due to this overload detection, the rod of the rewinding air cylinder 32 of the spring member drive unit 4 extends, and the drum 34 around which the spring member 10 is wound and the motor rotary shaft 33 side are disengaged from each other. Execute the rewind operation of 34. As a result, the spring member 10 is wound around the drum 34, passes through the rectangular cylindrical stick 15, and the tip of the spring member 10 returns to the position where the rewinding detection switch 51 is activated. When the rewinding detection switch 51 detects the return of the spring member 10, the rod of the air cylinder 32 returns to the contracted state, and the engagement of the pin 46 of the drum return prevention disk 45 and the pin 49 on the drum side causes
Prevents further reversal of drum 34.

In addition, after detecting the return of the spring member 10 with the switch 51, the stick replacement air cylinder 21 of the stick replacement unit 5 is operated to remove the movable stick receiver 19 from the lowermost rectangular tubular stick 15 and drop it. Bring the second rectangular stick 15 to the bottom. After that, the normal electronic component supply operation is repeated again.

It should be noted that even when the electronic components are clogged in the rectangular tubular stick 15 or in the guide groove 60, the overload detection unit 70 at the tip of the spring member 10 may be activated to detect overload. After the overload is detected, the rewinding air cylinder 32 of the spring member drive unit 4 is operated to perform the rewinding operation of the spring member 10 and the stick exchanging unit 5 performs the stick exchanging operation.

(Effects of the Invention) As described above, the electronic component supply apparatus of the present invention can unwind and rewind the spring member wound around the drum by rotating the drum, and the unwinding operation of the spring member. Also, since the rewinding operation is reliable and the electronic parts in the cylindrical stick are forced out by the spring member, the transfer force of the electronic parts is constant regardless of the number of electronic parts in the cylindrical stick, and the electronic parts supply operation is performed. It has high reliability and can support high-speed supply of electronic components. Further, it is not necessary to use gravity to transfer the electronic components, and the cylindrical stick can be horizontally arranged. In this case, the posture of the electronic component (the most advanced one) at the electronic component transfer position is changed. A mechanism capable of directly chucking the latest electronic component with a direct insertion head can be adopted without any modification, and the mechanism can be simplified.

[Brief description of drawings]

FIG. 1 is a front view showing the configuration of the left side portion of an electronic component supply apparatus according to the present invention, FIG. 2 is a front view showing the configuration of the right side portion thereof, and FIG. 3 is the overall configuration of the embodiment. FIG. 4 is a perspective view showing the outline of FIG.
FIG. 6 is a sectional view taken along line VV of FIG. 4, FIG. 6 is a sectional view taken along line VI-VI of FIG. 4, FIG. 7 is a sectional front view of an overload detecting portion, and FIGS. FIG. 1 ... Electronic component supply device, 3A, 3B ... stick holder, 4 ... spring member drive part, 5 ... stick replacement part,
6 ... Parts guide, 10 ... Spring member, 15 ... Square tubular stick, 17 ... Fixed stick receiver, 19 ... Movable stick receiver, 20 ... Electronic parts, 23 ... Fall prevention claw, 30 ...
Motor, 34 …… Drum, 70 …… Overload detector.

Claims (3)

[Claims] 1. A spring member drive for holding a plurality of cylindrical sticks accommodating a large number of electronic components arranged in one row in a stacked state and having a spring member feeding and rewinding function on one end side of the cylindrical sticks. An electronic component supply device that is provided with a portion and pushes the electronic component in the cylindrical stick by the spring member to transfer the electronic component to a predetermined electronic component transfer position, wherein the spring member drive unit includes a fixed support frame and the support frame. A rotary shaft that rotates in a fixed positional relationship, a drum that is rotatably fitted on the rotary shaft and that winds the spring member, and a mainspring that biases the drum in a rotational direction that winds the spring member. A rotation transmitting disc that is fitted into the rotation shaft and receives the rotation force of the rotation shaft but is slidable in the axial direction of the rotation shaft, and engages with the support frame so as not to rotate and Axial of rotation axis And a drum return prevention disc movable in a direction, and the rotation transmission disc and the drum return prevention disc are located on the inner peripheral side of the drum, the rotation transmission disc and the drum. At the first position of the return prevention disc with respect to the rotation axis, the inner peripheral surface of the drum and the rotation transmission disc transmit the rotation force through the engagement means in a direction to extend the spring member. The rotation operation of the drum is enabled, and the inner peripheral surface of the drum and the disk for preventing drum return prevent the rotation of the drum in the direction of rewinding the spring member via the one-way rotation engagement means, At the second position where the transmission disc and the drum return prevention disc have moved in the axial direction of the rotation shaft from the first position, the engagement means between the inner peripheral surface of the drum and the rotation transmission disc is When it comes off At the same time, the one-way rotational engagement means between the inner peripheral surface of the drum and the drum return prevention disc is also disengaged to execute the rotating operation of the drum in the direction in which the spring member is rewound by the mainspring. Electronic component supply device. 2. A compression spring for urging the rotation transmitting disc and the drum return preventing disc to the first position is provided, and the rotation transmitting disc and the drum return preventing disc are provided. The electronic component supply device according to claim 1, further comprising an air cylinder that moves from a first position to the second position. 3. The electronic component supply apparatus according to claim 1, further comprising an overload detecting portion for detecting that the pressing force is equal to or more than a certain value at the tip of the spring member.