JPH0521822B2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a long type electronic component in which chip-shaped electronic components such as diodes, transistors, and ICs are taped at regular pitch intervals. It relates to an electronic component supply device that automatically supplies electronic components to a printed circuit board assembly process using carrier tape (hereinafter referred to as carrier tape), and in particular, the bottom tape (also referred to as IC adhesive tape) of this electronic component supply device. The present invention relates to a tape winding device that peels off and winds up tape.

(Prior Art) A tape winding device in this type of electronic component supply device that has already been proposed is constructed as shown in FIGS.
No. 17520).

That is, in FIGS. 8 to 13, a pistol-shaped main frame 2 is fixed to the machine frame 1 of the electronic component supply device, and the rear end 2a of this main frame 2 has a 13 As shown in the figure, a supply reel 3 wrapped with tip tape a is removably mounted on the shaft, and this supply reel 3 rotates while being braked by a brake shoe 4 biased by a spring. It's becoming like that. Further, the front end 2b of the main frame 2 is provided with a tape intermittent feeding device 5 for the tip tape a using, for example, a ratchet mechanism. The rotating shaft 8 of the ratchet plate 7 is mounted as a shaft, and this ratchet plate 7
A feed claw 9 and a stop claw 10 are attached to the outer periphery of each spring 11,
The drive rod 1 is attached to a portion 6a of the sprocket 6 by urging it to engage with each tooth at 12 and supporting the shaft.
It is constructed by connecting 3.

Furthermore, between the tape intermittent feeding device 5 and the supply reel 3, guide pins 14 and guide rollers 15 for chip tape (embossed tape) a are provided. Furthermore, a tape guide member 16 is provided in the main frame 2 near the intermittent tape feeding device 5, and forms a peeling part 16a and a guide part 16b of the cover tape (top tape) d.
A swinging rod 17 is rotatably mounted on a pin shaft 18 below the guide member 16, and one end 17a of this swinging rod 17 is attached to the drive rod 13 with a pin 19.
The other end 17b of the swinging rod 17 intermittently rotates a tape take-up reel 26 for cover tape d, which will be described later, via a connecting rod 20.

On the other hand, a tape winding device for the cover tape d is installed in the main frame 2 near the connecting rod 20.

That is, in FIGS. 8 and 10, an ear-shaped reel support member 21 is erected on the main frame 2, and a support shaft 22 is horizontally attached to the reel support member 21. has been done. Further, as shown in FIG. 10, a tube shaft 23 having a flange 23a is fitted onto this support shaft 22 with a first one-way clutch (first one-way clutch) 24 interposed therebetween. The first one-way clutch 24 has a wave-like cam groove formed on the inner periphery of the tube shaft 23, and a roller or ball is placed in this cam groove with a spring to urge and press the support shaft 22 and the cam groove. hand,
The tube shaft 23 is configured to rotate only in one direction. Furthermore, a friction body 25 such as an O-ring is provided around the outer periphery of the tube shaft 23, and a take-up reel 26 for the cover tape d is removably fitted onto the tube shaft 23. has been done.

Note that a magnet 26a is attached to the boss portion of this take-up reel 26, and this magnet 26a attracts a reel flange 26b in a detachable manner, and this reel flange 26b is attached to another reel flange 26c. It is designed to be guided by a guide pin 26d implanted in the guide pin 26d.

On the other hand, a large gear 27 is fixed to the flange 23a of the tube shaft 23 with a set screw 28, with a gap between the large gear 27 and the flange 23a. As shown in FIG. 11, the pushing plate 29 and the actuating plate 30 are overlapped and fitted loosely, and a part of the actuating plate 30 has an arcuate long hole 30a. An engagement pin 31 that engages with the elongated hole 30a is attached to the pushing plate 29 where the elongated hole 30a is located so as to be connected to the connecting rod 20.
Furthermore, the pushing plate 29 and the actuating plate 30 are urged by a spring 32 so as to be brought together, and the actuating plate 30 is located on the opposite side of the elongated hole 30a.
A support shaft 33 is fixed to a part of the 0, and a pinion 34 that meshes with the large gear 27 is fitted with a built-in second one-way clutch (second one-way clutch) 35. equipped.

Although the second one-way clutch 35 and the first one-way clutch 24 have the same construction, they are designed to perform opposite clutch actions. That is, when the first one-way clutch 24 is free (inoperative), the second one-way clutch 24
The one-way clutch 35 is adapted to lock.

Therefore, the above-mentioned electronic component supply device is configured in advance to
The tip tape a from the supply reel 3 is passed through the guide pin 14 and the guide roller 15 to the sprocket 6.
At the same time, the cover tape d of the tip tape a is wound around the core of the tape take-up reel 26 via the peeling part 16a.

Next, by lowering the drive rod 13 of the electronic component supply device, the sprocket 6 integrated with the ratchet 7 of the intermittent tape feeding device 5 by the ratchet mechanism is intermittently rotated.

On the other hand, a swinging rod 17 connected to the driving rod 13
The tape take-up reel 26 is intermittently rotated via the connecting rod 20 to wind up the cover tape d.

That is, as shown in FIGS. 10 and 11, when the connecting rod 20 rises, the pushing plate 29 and the actuating plate 3 connected to the connecting rod 20 by the engagement pin 31
0 rotates to the right around the support axis 22. Then, the pinion 34 revolves around the large gear 27 while rotating. At this time, the tube shaft 23 is held in a locked (operated) state with respect to the support shaft 22 by the first one-way clutch 24, and the second one-way clutch 35 is free (inoperative) with respect to the support shaft 33.
condition, and the above cover tape d
is not wound (see Figure 12).

Next, when the connecting rod 20 descends, the pushing plate 29 and the actuating plate 30, which are connected to the connecting rod 20 by the engagement pin 31, move toward each other due to the elasticity of the spring 32, while supporting the support shaft 22. Rotate left around. At this time, the tube shaft 23 is connected to the first one-way clutch 24
Freely rests against the support shaft 22 (inoperative)
state, the second one-way clutch 35
is in a low (operating) state on the support shaft 33, so the pinion 34 is fixed on the support shaft 33, whereby the pinion 34 holds the large gear 27 that meshes with it relative to the support shaft. 22 over the length of the elongated hole 30a (see FIG. 11). Then, as shown in FIG. 10, the large gear 27 and the integral tube shaft 23 rotate together, so that the take-up reel 26 fitted on the tube shaft 23 is forced to move one part of the ratchet 7. It rotates by the amount of teeth. Thereby, the take-up reel 26 reliably takes up the cover tape d without slipping it.

In this way, the cover tape d is transferred to the tape take-up reel 26 in conjunction with the tape intermittent feeding device 5.
The exposed chips (electronic components) are transported to an electronic component assembly process (not shown) by, for example, a suction nozzle p attached to a robot.

(Problems to be Solved by the Invention) However, in the tape winding device of the electronic component supply device described above, as shown in FIG.
Chip tape a should be approximately 12 to 24 mm wide, and
Since electronic components c of a certain size are housed in each recess b ₁ of holding tape b having an ear hole, and each electronic component c is configured by pasting a cover tape d,
Since electronic components c of different sizes cannot be accommodated in each of the recesses _b1 , a carrier tape A as shown in FIG. 2 is used. That is, this carrier tape A has a width of approximately 24 to 32 mm, and elongated holes _B1 are bored at regular pitch intervals in support tape B having ear holes.
A narrow bottom tape (also referred to as one-sided adhesive tape) C is pasted to the middle of the back side of the electronic component D, and each electronic component D is pasted from above through the long hole _B1 to the bottom tape C where the long hole _B1 is located. It is.

Therefore, in this carrier tape A, even if each electronic component D has a different size or a slightly different shape, the bottom tape C where the long hole _B1 is located
Since it can be used as an electronic component supply device, it is possible to obtain a large degree of freedom in supplying electronic components.

However, although the tape winding device of the electronic component supply device described above is effective when using the tip tape a, when using the carrier tape A, the bottom tape C must be wound to the bottom of the machine frame. For these reasons, it is difficult to apply the tape winding device of the electronic component supply device as is.

On the other hand, in the electronic component supply device described above, the first one-way clutch 24 and the second one-way clutch 35 of the take-up reel are operated by the amount of movement of the drive rod 13 via the link mechanism, so the amount of movement is limited to a constant value. It is difficult to freely change and control the winding stroke of the bottom tape c to which electronic components D of different sizes are attached.

Furthermore, the above-mentioned electronic component supply device is configured such that when reeling the cover tape d, the cover tape d is
Since the chip (electronic component) c is forcibly pulled and peeled off from the chip tape a by the peeling part 16a, there is a risk that the chip (electronic component) c may jump up, change direction, or fly out due to the vibration generated during this peeling. It is difficult to reliably transfer the electronic parts to the assembly process using the suction nozzle p.

The present invention has been made in view of the above-mentioned circumstances, and is provided with a tape intermittent feeding device for carrier tape A, even if bottom tape c is pulled and peeled off from support tape B by a peeling lever when reeling bottom tape c. The tape winding device and the tape winding device are held in an inoperative state and are on standby, and the electronic component D is held quietly so as not to cause vibration to the separated electronic component D, and the electronic component D is moved to the assembly process of the electronic component D by the suction nozzle p. After the transfer, the intermittent tape feeding device and the tape winding device are operated to take up the electronic component D, and the electronic component D is peeled off accurately and in a stable state, and the bottom tape peeled off from the carrier tape is removed. ,
While constantly applying a constant tension, the bottom tape on the take-up reel is stably wound, and the winding stroke of the bottom tape C is adjusted by freely controlling the stroke of a cylinder device equipped with an air valve. It is an object of the present invention to provide an electronic component supply device which can be used with carrier tapes for electronic components of different sizes.

[Structure of the invention]

(Means for Solving the Problems and Their Effects) The present invention provides an intermittent tape feeding device for the carrier tape at the front end of the machine frame, and a tape winding device for the bottom tape at the lower part of the machine frame adjacent to the intermittent tape feeding device. In the electronic component supply device provided with the device, an operating lever is pivoted to the machine frame located between the tape intermittent feeding device and the tape winding device so as to be pushed by a drive lever, and the operating lever is A push-down lever is connected to one arm lever, and the bottom tape peeling lever is directly or indirectly connected to the push-down lever so as to be swingable, and the other arm lever of the actuation lever is connected to the lever and the valve operation lever. A cylinder device equipped with an air valve is connected to the cylinder device, and the intermittent tape feeding device and the tape winding device are connected to the cylinder device, and when the pivoting rod pushes the operating lever, the peeling lever At the same time, the bottom tape is peeled off from the support tape, and the tape intermittent feeding device and the tape winding device are put in a standby state in preparation for winding, and when the driving rod is raised and the operating lever moves back, the peeling lever is The bottom tape is moved back to the original position, and the intermittent tape feeding device and the tape winding device are operated to wind the bottom tape.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

1 to 7, reference numeral 1 denotes a machine frame in the electronic component supply device, and a main frame 2 is fixed to this machine frame 1, and a rear end 2a of this main frame 2 As shown in FIG. 2, a supply reel 3 wrapped with carrier tape A is removably mounted on the shaft, and this supply reel 3 is braked by a brake shoe 4 biased by a spring. It is designed to rotate while receiving it. Also, the main frame 2 above
A tape intermittent feeding device 5 for the carrier tape A using, for example, a ratchet mechanism is provided at the front end portion 2b of the main frame 2. A feed pawl 9 and a stop pawl 10 are mounted on the outer periphery of the ratchet plate 7 with springs 11 and 1, respectively.
2, it is biased and pivotally supported so as to be locked to each tooth.

Furthermore, a carrier tape A is provided in the main frame 2 between the tape intermittent feeding device 5 and the supply reel 3.
A bracket 40 is attached to the main frame 2 near the intermittent tape feeding device 5. This bracket 40 has a three-pronged operating lever 41.
is pivotally connected by a pin shaft 42, and this operating lever 4
1 biases the right rotation behavior around this pin shaft 42 by the elasticity of a spring 43, but this is regulated by a stopper 44.

That is, the horizontal arm rod 41a of the operating lever 41 extends directly below the drive rod 13, and the vertical arm lever 41b of the operating lever 41 is regulated by the stop 44. Further, in the middle of the horizontal arm rod 41a of the operating lever 41, a push rod 45 is connected to a pin 46.
The engagement pin 47 attached to the lower part of the push-down rod 45 connects one end of the swinging rod 48 pivotally connected to the main frame 2 with a spring 48 around a support shaft 49.
It is biased by point a and rotates to the right. Further, a fork portion 51a of a peeling lever 51 is engaged with the engagement pin 50 at the other end of the swinging rod 48, and the peeling lever 51 is configured to swing back and forth around a pin shaft 52. It's summery. Furthermore, a valve operating rod 53 is connected to the vertical arm rod 41b of the operating lever 41 via a connecting rod 54, and the other end of the valve operating rod 53 is connected to the air valve 55.
It is designed to open and close. The air valve 55 is fixed to a bracket 56 provided on the main frame 2, and an ear piece 57 is attached to the main frame 2 next to the bracket 56. Furthermore, a cylinder device 58 such as an air cylinder device is pivotally attached to this ear piece 57 with a pin shaft 59.
A speed control valve 60 is attached to the base of the motor. Furthermore, this speed control valve 60 is connected to the air valve 55 through a communication pipe 61, and this air valve 55 is connected to an air source through a communication pipe 62.

On the other hand, the main frame 2 near the operating lever 41
A tape winding device for bottom tape C is installed.

That is, in FIGS. 1 and 6, the main frame 2
A reel support member 63 is provided vertically on the reel support member 63, and the support shaft 22 is horizontally attached to the reel support member 63. Further, as shown in FIG. 6, a tube shaft 23 having a flange 23a is fitted onto this support shaft 22 with a first one-way clutch (first one-way clutch) 24 interposed therebetween. The first one-way clutch 24 has a wave-like cam groove formed on the inner periphery of the tube shaft 23, and a roller or ball is placed in this cam groove with a spring to urge and press the support shaft 22 and the cam groove. Therefore, the tube shaft 23 is configured to rotate only in one direction. Furthermore, on the outer periphery of this tube shaft 23, for example,
A friction body 25 such as an O-ring is provided around the circumference.
A take-up reel 26 for the bottom tape C is detachably fitted onto the tube shaft 23.

Note that a magnet 26a is attached to the boss portion of this take-up reel 26, and this magnet 26a attracts a reel flange 26b in a detachable manner, and this reel flange 26b is attached to another reel flange 26c. It is designed to be guided by a guide pin 26d implanted in the guide pin 26d.

On the other hand, a large gear 27 is fixed to the flange 23a of the tube shaft 23 with a set screw 28, with a gap between the large gear 27 and the flange 23a. As shown in Figure 7,
The pushing plate 64 and the actuating plate 65 overlap, and
A long arc-shaped hole 65a is bored in a part of the actuating plate 65, and the pushing plate 64, in which the long hole 65a is located, has the long hole. An engagement pin 31 that engages with 65a is implanted. Further, the pushing plate 64 and the actuating plate 65 are biased toward each other by the spring 32, and a part of the actuating plate 65 located on the opposite side of the elongated hole 65a is provided with a support. A shaft 33 is fixed, and a pinion 34 that meshes with the large gear 27 is fitted onto this support shaft 33 with a second one-way clutch (second one-way clutch) 35 interposed therebetween.

In particular, although the second one-way clutch 35 and the first one-way clutch 24 have the same construction, they are adapted to perform opposite clutch actions. That is, when the first one-way clutch 24 is free (inoperative), the second one-way clutch 35 is locked (in operation).

Furthermore, a piston rod 58a of the cylinder device 58 is connected to one end of the actuation plate 65, and a compressible spring 66 is stretched between the engagement pin 31 and the bracket 56. The compressible spring 66 is adapted to return the pushing plate 64 to its original position when the operation of the cylinder device 58 is released. Further, one end of a ratchet link 67 is connected to the other end of the actuating plate 65, and the other end of the ratchet link 67 is connected to the pin 9a of the feed pawl 9 of the tape intermittent feed device 5. ing.

Hereinafter, the effects of the present invention will be explained.

In advance, the carrier tape A from the supply reel 3 is wound around the sprocket 6 via the guide member 16 and the peeling lever 51, and the bottom tape C is wrapped around the sprocket 6.
is wound around the core of the take-up reel 26 via the peeling part of the peeling lever 51 and the guide roller 15,
Prepare for electronic component supply operation.

Next, by lowering the drive rod 13 of the electronic component supply device, the operating lever 41 rotates to the left around the pin shaft 42, so the pusher lever 45 connected to the operating lever 41 descends, causing the push lever 41 to rotate to the left around the pin shaft 42. The engagement pin 47 of the lowering rod 45 rotates the swinging rod 48 to the right around the support shaft 49. Then, the swinging rod 48 rotates the peeling lever 51 to the left around the pin shaft 52, so that when the bottom tape C is peeled off from the support tape B, the electronic component D is also peeled off and placed on the support tape B. Because it remains quietly placed,
This electronic component D is suctioned by a suction nozzle P attached to the robot and transferred to an electronic component assembly process.

On the other hand, since the vertical arm rod 41b of the operating lever 41 rotates the valve operating rod 53 to the right around the support shaft 53a via the connecting rod 54 connected thereto, the other end of the valve operating rod 53 is connected to the air valve. 55 is opened. Then, the compressed air from the communication pipe 62 connected to this air valve 55 passes through the speed control valve 60.
Since the cylinder device 58 is operated against the elasticity of the spring 66 through the piston rod 58a of the cylinder device 58, the actuating plate 65 is connected to the support shaft 2.
2, the feed pawl 9 and stop pawl 10 of the intermittent tape feeding device 5 are rotated by a certain pitch via a ratchet link 67 connected to the actuating plate 65. Intermittent feed device 5
Waits in the winding preparation state.

On the other hand, as shown in FIG.
Since the end edge of the elongated hole 65a rotates the engagement pin 31 to the left around the support shaft 22, the pinion 34 revolves around the large gear while rotating on its own axis. At this time, the tube shaft 23 shown in FIG. It is in a free (inoperable) state, and the bottom tape C is not wound.
The tape winding device stands by in a state in which the bottom tape C is ready to be wound.

Next, when the driving rod 13 rises, the operating rod 41 moves back around the pin shaft 42 by the stored elasticity of the spring 43, so the push-down rod 45 rises and is pressed down by the push-down rod 45. The swinging rod 48 has a spring 48
Further, this swinging rod 48 rotates the peeling lever 51 to the right around the pin shaft 52 to return to the initial state, and at the same time, the vertical arm rod 41b of the operating lever 41 moves back as a connecting rod. Valve operating rod 5 via 54
3 to the left around the support shaft 53a, the air valve 5, which was opened by the valve operating rod 53,
5 closes the valve. Then, the cylinder device 58
Since the piston rod 58a moves back to its original position by the stored elasticity of the spring 66, the actuating plate 65 is attached to the support shaft 22.
Therefore, the feed pawl 9 and stop pawl 10 of the intermittent tape feeding device 5 are rotated by a certain pitch via the ratchet link 67 connected to the actuating plate 65 to perform ratchet feeding. do.

On the other hand, when the actuating plate 65 moves back due to the elasticity of the spring 66, the engaging pin 31 engaged with the edge of the elongated hole 65a moves together with the pushing plate 64 and the actuating plate 65 by the spring 3.
They rotate to the right around the support shaft 22 while being drawn to each other by the elasticity of 2. At this time, the tube shaft 23 becomes free (inactive) relative to the support shaft 22 by the first one-way clutch 24, and the second one-way clutch 35 becomes locked (operated) to the support shaft 33. The pinion 34 relatively moves the large gear 27 that meshes therewith around the support shaft 22 over the length of the elongated hole 65a. Then, since the large gear 27 and the integral tube shaft 23 rotate together, the take-up reel 26 fitted onto the tube shaft 23 is forcibly rotated by one tooth of the ratchet 7. Thereby, the take-up reel 26 reliably takes up the bottom tape C in a stable state without slipping.

Note that the operating stroke of the cylinder device 58 can adjust the winding stroke of the bottom tape C depending on the size of the electronic component D.

〔Effect of the invention〕

As described above, according to the present invention, the tape intermittent feeding device 5 for the carrier tape 4 is provided at the front end of the machine frame 1.
and a bottom tape tape C winding device is provided in the lower part of the machine frame 1 close to the tape intermittent feeding device 5. An operating lever 41 is pivotally attached to the machine frame 1 located at , so that it can be pushed by a drive lever 13 , a push-down lever 45 is connected to one arm of the operating lever 41 , and the push-down lever 45 is connected to the push-down lever 45 . A peeling lever 51 of the bottom tape C is connected directly or indirectly to be swingable, and a cylinder device 58 equipped with an air valve 55 is connected to the other arm of the operating lever 41 via a connecting lever 54 and a valve operating lever 53. However, since the intermittent tape feeding device 5 and the tape winding device are connected to this cylinder device 58, there is no fear that the electronic component D will fly up due to vibration when the bottom tape C is peeled off, and the suction nozzle p Not only can it be accurately and stably held and transferred to the next mounting process, but it can also be reliably transferred to the take-up reel while always applying a constant tension to the bottom tape C that has been peeled off from the carrier tape A. Not only can the tape be wound up to 26, but also the stroke of the cylinder device 58 can be freely adjusted, resulting in excellent effects such as the ability to freely control the winding stroke of the bottom tape C and the ratchet stroke of the tape intermittent feeding device. .

[Brief explanation of the drawing]

FIG. 1 is a front view of the electronic component supply device of the present invention, FIG. 2 is a plan view showing a part of the carrier tape used in the present invention, FIG. 3 is a plan view of FIG. 1, and FIG. Figure 5 is a perspective view showing the main parts of the present invention.
6 is an enlarged sectional view taken along the chain line A-A in FIG. 1, FIG. 7 is a front view of the same as the above, and FIG. 8 is an already proposed 9th front view of the electronic component supply device shown in FIG.
10 is an enlarged sectional view taken along the chain line B-B in FIG. 8, FIG. 11 is a front view of the same as above, and FIG. 12 is an already proposed electronic component supply device. Figure 13 is a diagram for explaining the action of
FIG. 3 is a cross-sectional view of the tip tape. DESCRIPTION OF SYMBOLS 1... Machine frame, 2... Main frame, 3... Supply reel, 5... Tape intermittent feeding device, 22... Support shaft, 23... Tube shaft,
24...First one-way clutch, 25...Friction body,
26... Take-up reel, 27... Large gear, 29... Pushing plate, 30... Operating plate, 33... Support shaft, 34... Pinion, 35... Second one-way clutch, 41... Operating lever, 45... Pushing lever, 48 ... Swinging rod, 51... Peeling lever, 53... Valve operating rod, 54... Connection rod,
55...Air valve, 58...Cylinder device, 60
...Speed control valve, 63...Reel support member, 64
...pushing plate, 65...actuating plate, 65a...elongated hole, 67...
Ratchet link,...tape winding device.

Claims (1)

[Scope of Claims] 1. In an electronic component supply device in which an intermittent tape feeding device for a carrier tape is provided at the front end of a machine frame, and a tape winding device for a bottom tape is provided below the machine frame adjacent to the intermittent tape feeding device. , an operating lever is pivotally attached to the machine frame located between the tape intermittent feeding device and the tape winding device so as to be pushed by a drive lever, and a push lever is attached to one arm lever of the operating lever. the bottom tape peeling lever is directly or indirectly connected to the push-down rod so as to be swingable, and an air valve is connected to the other arm rod of the operating lever via a connecting rod and a valve operating rod. , and the intermittent tape feeding device and the tape winding device are connected to the cylinder device. 2. The electronic component supply device according to claim 1, wherein the tape winding device is provided with a first one-way clutch and a second one-way clutch so as to perform clutch operations opposite to each other.