JPH0313143B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a top tape winding device for a tape feeder.

[Background technology]

The tape feeder intermittently moves a tape containing a large number of chip parts such as microelectronic parts to be mounted on a printed circuit board or the like in each storage recess at a predetermined interval, and places the tape in the storage recess at an appropriate position. The covering top tape is peeled off and the minute electronic components are fed one by one to an electronic component mounting machine. The peeled top tape is then wound up by a top tape winding device. In this type of top tape winding device, a winding roller is brought into contact with the outer peripheral surface of a disc-shaped reel frame of a winding reel for winding the top tape, and the winding roller is rotated by the friction generated by the winding roller. By the way, conventional top tape winding devices have the disadvantage that phenomena such as breakage of the top tape occur because no measures have been taken to release excessive rotational driving force when it is applied to the take-up reel. .

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a top tape winding device for a tape feeder that does not cause the top tape to break as described above.

[Disclosure of the invention]

The present invention includes a take-up reel for winding the top tape peeled from the carrier tape, a take-up reel support part for rotatably supporting the take-up reel, and a take-up reel supporting part that supports the take-up reel in a disc-shaped reel frame of the take-up reel. Equipped with a take-up roller that contacts the outer peripheral surface and rotates the take-up reel by friction, and the take-up roller has a roller with a center shaft hole fitted around the drive shaft that is rotated at a constant speed by a drive source to provide elasticity. The gist of the present invention is a top tape winding device for a tape feeder, characterized in that it is configured by being locked with a friction body.

Next, the present invention will be explained in detail based on examples.

FIG. 1 shows an embodiment of the invention. In the figure, reference numeral 1 denotes a substrate used in an upright state, and a disk-shaped tape feed gear 3 is rotatably attached to a shaft 2 at one end of the substrate. This disc-shaped tape feed gear 3 has feed teeth 4 at predetermined intervals on its outer periphery, and these feed teeth 4 are arranged at predetermined intervals along the longitudinal direction of the side edge of the tape (carrier tape) 5. Formed feed hole 5b (see Figure 2)
It is designed to be inserted into the 6 is a ratchet gear integrated with the feed dog 4 by a screw 7; 8 is a drive arm that swings around the shaft 2; and 9 is a ratchet pawl provided on the drive arm 8. . Reference numeral 10 denotes a reversal prevention pawl, which acts to prevent the ratchet gear 6 from reversing when the ratchet pawl 9 slides on the teeth of the ratchet gear 6.
Reference numeral 11 denotes a guide whose upper portion is formed on a guide stand 12 and along which the tape 5 is moved. This tape 5, as shown in FIG. It is set so that the feed tooth 4 of the feed gear 3 can mesh with a feed hole 5b provided on the side edge of the feed gear. Reference numeral 19 denotes a cover plate body, and the cover plate portion 20 has a function of preventing the tape 5 from lifting up.
The peeling plate part 21 is separated from the tape 5 by the top tape 1.
It exhibits the effect of exfoliating 5. That is, as shown in FIG.
2 is provided within the interval formed between the guide 11 and the substrate 1 so as to be able to rotate vertically around a shaft 23, and a cover plate portion 20 is provided between the guide base portion 12 and the guide base portion 12.
It is located above the tape 5a and prevents the tape 5a shown by the dashed line from lifting up. Then, the peeling plate section 21 reversely peels off the top tape 15 shown by the two-dot chain line from the tape 5 to expose the microelectronic component 14 housed in the housing recess 13 of the tape. The exposed microelectronic component 14 is removed by a suction nozzle 25 indicated by a chain line.
Suction space 2 between cover plate part 20 and peeling plate part 21
4, and is disposed on a printed circuit board or the like by moving the suction nozzle 25 and releasing the suction. 26
is a tension spring that tensions and biases the cover plate 19 in the direction of the guide base portion 12. Reference numeral 27 denotes a drive shaft, which is supported by a shaft holder 28 fixed to the base plate 1 so as to be movable left and right. This drive shaft 27 is connected to a drive arm 29 of a one-way clutch 29 whose one end is pivoted to the drive arm 8 and the other end is fixed to the base plate 1.
It is pivoted to a. A drive lever 30 is rotatably attached to the mounting shaft 1a of the substrate 1, and drives the drive shaft 27 in the direction of arrow B by lowering the drive portion 31a of the air cylinder 31. 32 is a return spring for the drive shaft 27, and 33 is an air damper whose piston 33a is connected to the drive shaft 27 via a connection arm 34. This air damper 3
3 serves to dampen the rapid return of the drive shaft 27 when it returns due to the spring force of the return spring 32, and to slow down its return speed (regression speed). 35 is a flow rate adjustment valve of the air damper 33, and a knob 36
The retraction speed of the drive shaft 27 can be adjusted appropriately depending on the degree of twist of the drive shaft 27. 37 is the empty tape 5a after the minute electronic component 14 has been taken out.
a presser plate for pressing the one-way clutch 29;
8 is its spring; 39 is a presser plate that presses the tape 5 containing the minute electronic component 14 against the guide roller 40; and 41 is its spring. 42 is a top tape reel for winding the top tape, which is disposed between the substrate 1 and a support plate 43 provided at a constant interval with respect to the substrate 1;
and an upper open elongated hole 42 provided in the support plate 43
It is rotatably supported by being loosely fitted into a. As shown in FIG. 4, this top tape reel 42 has a cylindrical core body 42c from which rotating shafts 44 protrude from both end faces, and a center hole of which is aligned with the rotating shaft 44 of the cylindrical core body 42c. A pair of disc-shaped reel frames 42b are attached to both end faces of a cylindrical core body 42c using the attractive force of a magnet 44a. Reference numeral 45 denotes a winding roller that constantly urges the top tape reel 42 to rotate in the direction of arrow D. As shown in FIG. 5, this winding roller 45 is constructed by rotatably fitting a rubber roller 45b with a center shaft hole onto a drive shaft 45a which is rotated at a constant speed by a motor (not shown).
5c is engaged with the drive shaft 45a. 6 and 7 show the tape feeder mounted on the electronic component mounting machine 46. As shown in FIG. That is, the electronic component housing tape 5 is fed to the tape feeder by the electronic component mounting machine 4.
The electronic component storage tape reel 47 is removably installed on the top tape reel 4.
2, the air cylinder 31 that drives the drive shaft 27, and the suction nozzle 25 that sucks the exposed electronic components.
The electronic component mounting machine 46 is equipped with the electronic component mounting machine 46. Reference numeral 48 is a printed circuit board on which electronic components are arranged, and reference numeral 49 is a control section for programming the operation control of the suction nozzle 25. This electronic component mounting machine 46
is equipped with several tape feeders, each containing a different type of microelectronic component, which can be attached and detached as a set.

In this configuration, the drive unit 3 of the air cylinder 31
1a is lowered, the drive lever 30 rotates around the shaft 1a from the state shown in FIG.
7 is moved in the direction of arrow B against the spring force of the return spring 32. This movement of the drive shaft 27 causes the drive arm 8 to rotate clockwise about the shaft 2, and its ratchet pawl 9 slides over the teeth of the ratchet gear 6 by one tooth. At this time, the drive arm 29a of the one-way clutch 29 simultaneously rotates counterclockwise due to the movement of the drive shaft 27 and assumes a preparatory position for feeding the empty tape 5a in the direction of arrow E. When the drive portion 31a of the air cylinder 31 rises from this state, the drive shaft 27 returns to its initial state due to the spring force of the return spring 32. This return of the drive shaft 27 causes the drive arm 8 to move toward the shaft 2.
The ratchet pawl 9 rotates the ratchet gear 6 counterclockwise by one tooth. Due to this rotation, the tape feed gear 3 integrated with the ratchet gear 6 rotates counterclockwise by one tooth of the ratchet gear 6, and the tape 5 containing the microelectronic component 14 is fixed in the direction of arrow A. Move the dimensions. In this case, the top tape 15 is constantly tensilely biased in the direction of arrow F as shown in FIG. 3 by the rotational biasing force applied to the top tape reel 42.
By moving a fixed distance in the direction, the tape 5 is peeled off by the amount of movement. As a result, the minute electronic component 14 housed in the tape 5 is exposed in the suction space 24. In this device, the drive shaft 27
Since the return speed of the tape 5 is slowed down by the air damper 33, the tape 5 is moved by a fixed distance in the direction of the arrow A slowly. Therefore, the microelectronic component 14
This prevents the robot from jumping out or standing up, and maintains a stable posture. The minute electronic component 14 thus exposed in the suction space 24 is suctioned by the suction nozzle 25 and placed at a predetermined position on the printed circuit board 48 . The return of the drive shaft 27 is as follows:
At the same time, the drive arm 29 of the one-way clutch 29
Since the tape 5a is rotated clockwise, the empty tape 5a is thereby sent in the direction of the arrow E and discharged to the outside. By repeating the above operations, tape 5
is intermittently fed, minute electronic components 14 are fed at predetermined time intervals, and empty tape 5a is intermittently discharged to the outside.

What should be noted is that, as mentioned above, the winding roller 4
The rubber roller 45b of No. 5 is the ball plunger 45c.
This means that the drive shaft 45a is locked to the drive shaft 45a. With this configuration, the degree of tightening of the ball plunger 45c can be adjusted to tighten the drive shaft 45a.
It is now possible to adjust the degree of transmission of the rotational driving force (winding force) to the rubber roller 45b, and it is possible to adjust the degree of transmission of the rotational driving force (winding force) to the rubber roller 45b. Be able to respond. That is, by adjusting the degree of tightening of the ball plunger 45c, the drive shaft 45a slides and rotates with a constant torque, and an appropriate rotational driving force is transmitted to the rubber roller 45b. Moreover, the top tape reel 42 has a disc-shaped reel frame 42b that is attached to the magnet 44.
The cylindrical reel frame 42b is attached to the cylindrical core body 42c by the suction force of a, and even if an excessive rotational driving force (winding force) is applied from the winding roller 45, the cylindrical reel frame 42b
The winding force is maintained appropriately because the winding force is rotated by sliding. Further, by doing so, the cylindrical reel frame 42b can be easily attached and detached, so that the wound top tape can be easily taken out and the workability can be improved.

Note that even if a normal top tape reel is used in place of the top tape reel 42, the effect of optimizing the winding force can be obtained due to the action of the winding roller 45.

〔Effect of the invention〕

In the top tape winding device of the tape feeder of the present invention, the roller with the center shaft hole of the winding roller is locked to the drive shaft using an elastic friction body, so that excessive winding force is not applied to the winding reel. In some cases, the drive shaft may slip and rotate. Therefore, the appropriate winding force is always applied to the winding reel,
Problems such as breakage of the top tape and mistakes in peeling off the top tape do not occur.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of an embodiment of the present invention, Fig. 2 is an enlarged perspective view of the tape used therein, Fig. 3 is an enlarged perspective view of the main part of Fig. 1, and Fig. 4 is a perspective view of a top tape reel. , FIG. 5 is a perspective view of a take-up roller, FIG. 6 is a perspective view of an electronic component mounting machine equipped with the device shown in FIG. 1, and FIG. 7 is a side sectional view thereof. 5...Carrier tape, 14...Minute electronic component, 15...Top tape, 25...Suction nozzle, 42...Take-up reel (top tape reel),
42b...disc-shaped reel frame, 42c...disc-shaped core, 44...rotating shaft, 44a...magnet, 45...
Winding roller, 45a...drive shaft, 45b...rubber roller with center shaft hole, 45c...ball plunger.

Claims (1)

[Scope of Claims] 1. A take-up reel for winding the top tape peeled from the carrier tape, a take-up reel support part for rotatably supporting the take-up reel, and a take-up reel supporting part that supports the take-up reel in a disc-shaped manner. It is equipped with a take-up roller that contacts the outer peripheral surface of the reel frame and rotates the take-up reel by friction, and the take-up roller has a roller with a center shaft hole fitted onto a drive shaft that is rotated at a constant speed by a drive source. What is claimed is: 1. A top tape winding device for a tape feeder, characterized in that the top tape winding device for a tape feeder is constructed by locking the top tape with an elastic friction body. 2. A take-up reel has a cylindrical core with a rotating shaft protruding from both end faces, and a magnet is attracted to both left and right end faces of the cylindrical core by aligning its own center hole with the rotating axis of the cylindrical core. A top tape winding device for a tape feeder according to claim 1, comprising a pair of disc-shaped reel frames that are mounted using force. 3. The top tape winding device for a tape feeder according to claim 1 or 2, wherein the elastic friction body is a ball plunger.