KR100364964B1 - Tape feeder for chip mounter - Google Patents

Abstract

The present invention relates to a tape feeder for supplying chips to a chip mounter. The tape feeder for chip mounters according to the present invention is a tape feeder (1) having a tape feeder (3) and a vinyl feeder (4). A drive motor 10 driven by application of power; A worm gear 12 provided on the motor shaft of the drive motor 10; A worm wheel 14 rotated by the worm gear 112; An eccentric cam (17) provided on one side of the worm wheel (14) whose center of rotation is eccentric; A link rod 20 having one end connected to the eccentric cam 170 and oscillated by the rotation of the worm wheel 14; A first link 22 connected to the other end of the link bar 20 while being rotatably installed around the pin 24 to rotate by a swing of the link bar 20; A second link 44 rotatably connected to one end of the first link 22 to transmit power to the tape transfer part 3; And a third link 26 rotatably connected to the other end of the first link 22 to transmit power to the vinyl transfer part 4. This configuration can simplify the structure so that the components of the tape feeder operate by one drive motor.

Description

Tape feeder for chip mounter

The present invention relates to a tape feeder for supplying a chip to a chip mounter, and more particularly, a tape conveying unit for peeling off the surface of the tape unwound from the reel and conveying the tape one by one, and a vinyl winding unit for winding the peeled off vinyl. The present invention relates to a tape feeder for a chip mounter, in which the vinyl conveying unit for transferring such vinyl from the tape conveying unit to the vinyl winding unit is operated by one driving motor.

In general, a printed circuit board is constituted by mounting components of various standards, and the mounting component chip is mounted on the printed circuit board by a device called a surface mounter, that is, a chip mounter. The chip mounter has a head configured to move a chip supplied by a chip feeder called a feeder to a mounting position of a printed circuit board, and the head is provided with a plurality of nozzles for picking up chips using vacuum pressure.

There are many types of feeders, and tape feeders adapted to supply chips to chip mounters using tape taped with vinyl by inserting chips into recesses formed at regular intervals in the longitudinal direction are included in the scope of the present invention. Then, the tape is prepared while being wound on a reel and supplied to the tape feeder.

1 is a front view showing a tape feeder according to the prior art, FIG. 2 is a rear view showing the tape feeder according to the prior art with the cover open, and FIGS. 3A, 3B and 4 are shown in the conventional tape feeder. It is an explanatory drawing which shows the state in which the provided vinyl winding part, the vinyl conveyance part, and the tape conveyance part are each powered by a separate motor. As shown in FIG. 1, the tape feeder 100 which concerns on a prior art is a tape. The tape conveying unit 101 removes the vinyl from the surface of the tape and feeds the pitches one by one, the vinyl winding unit 102 winding and winding the vinyl peeled off the tape, and the vinyl transferring the vinyl from the tape conveying unit 101 to the vinyl winding unit 102. It is roughly divided into the conveying part 103, and these tape conveying part 101, the vinyl winding part 102, and the vinyl conveying part 103 consist of one body integrated together, or the several body body is mutually connected by a bolt etc. Is formed is mounted on the frame 104.

The tape conveying unit 101 has a cover 110 mounted on one side corner of the frame 104 so as to be pivotable through a pin 111 as shown in more detail in FIGS. 2 and 4, and the cover 110. ) Has a groove (not shown) for taking out the vinyl peeled from the tape and a groove (not shown) that allows the nozzle of the chip mounter to suck the chip contained in the recess of the tape. The sector gear 113 is engaged with the worm gear 112a which is rotated by the stepping motor 112, and the sector gear 113 is mounted to pivot about the pin 113a, and the sector gear 113 is rotated. ) Is centrally connected to one end of the first link 114, the other end of the first link 114 is connected to one side of the second link (115). The other side of the second link 115 is connected to the feeding gear 117 and the pin 116 which is the center of rotation of the ratchet gear 118, and the ratchet gear 118 is a plurality of ratchets ( The rotation is restricted by 118a and 118b. Reference numerals 119a, 119b, and 119c denote elastic springs that elastically support each of the first link 114 and the ratchets 118a and 118b in one direction.

The vinyl winding unit 102 is rotatably mounted around the pin 120a and has a vinyl winding reel 120 for winding the vinyl peeled off from the tape in the tape transfer unit 101, and the vinyl winding reel 120 rotates. It has a first gear 121 for providing power. As shown in more detail in FIG. 3A, the first gear 121 is connected to the driving motor 124 through the second and third gears 122 and 123 to receive rotational power from the driving motor 124. The outer surface of the first gear 121 is installed in contact with the outer diameter side surface of the vinyl winding reel 120. Of course, each of the first, second and third gears 121, 122, 123 is rotatably mounted to the frame 104 via a pin 125. The third gear 123 is connected to the worm gear 124a of the driving motor 124.

The vinyl conveying part 103 is a part for conveying the vinyl peeled off the tape toward the vinyl winding part 102 in the tape conveying part 101, and as shown in more detail in FIG. 3B, the thread parts formed on the outer surface are coupled to each other. It has a plurality of transfer gears (131, 132) that can be forcibly transported by passing the vinyl therebetween while rotating. The transfer gear 131 of one of the transfer gears (131, 132) described above is the other transfer gear (132). Is rotatably mounted to a support rod 133 that can pivot about the pins 133a so as to contact or be separated therefrom, and another transfer gear 132 rotates in engagement with another gear 134. It is connected so that, the gear 134 is mounted to engage the worm gear 135a, the worm gear 135a is provided with the rotational power by the drive motor 135. Of course, the transfer gear 132 and the gear 134 are rotatably mounted to the frame 104 via the pin 136, respectively. Reference numerals 105 and 106 denote control panels and operation panels for controlling and operating the tape transfer unit 101, the vinyl winding unit 102, and the vinyl transfer unit 103, respectively.

As described above, in the conventional tape feeder 100, the tape feeder 101 and the vinyl are prepared by transferring the pitches one by one while removing the vinyl from the tape so that the nozzle of the chip mounter can absorb the chips and take them to the printed circuit board. It is necessary to separately provide a power source for operating the vinyl winding unit 120 and the vinyl transfer unit 103 for forcibly transferring the vinyl peeled off from the tape transfer unit 101 toward the vinyl winding unit 102, which are tape feeders 100. By increasing the number of components and the assembly number of the) was to have a problem of increasing the manufacturing cost.

The present invention has been made in order to solve the above problems, a tape conveying unit for peeling off the surface of the tape released from the reel and conveyed by one pitch, and a vinyl winding unit for winding the peeled off vinyl and such vinyl It is an object of the present invention to provide a tape feeder for a chip mounter whose structure is simplified so that the vinyl conveying unit for transporting the tape conveying unit from the tape conveying unit to the vinyl winding unit is operated by one driving motor.

1 is a front view showing a tape feeder according to the prior art.

Figure 2 is a rear view showing the tape feeder according to the prior art with the cover open.

3A, 3B, and 4 are explanatory diagrams showing a state in which each of the vinyl winding portion, the vinyl transfer portion, and the tape transfer portion provided in the conventional tape feeder is powered by a separate motor;

5 is a front view showing a tape feeder according to the present invention.

6 is a rear view of the tape feeder according to the present invention;

Figure 7 is a detailed view of the main part of Figure 5 for explaining the power transmission configuration of the present invention.

8 is an explanatory diagram of an overall power transmission configuration in which a vinyl winding portion, a vinyl conveying portion and a tape conveying portion operate by one driving means according to the present invention;

** Description of symbols for the main parts of the drawing **

2 ... frame 3 ... tape feed

4 ... vinyl conveying part 5 ... vinyl winding part

10 ... drive motor 12 ... worm gear

14 ... Worm wheel 17 ... Cam

20 ... link bar 22 ... first link

26 ... 3rd link 29 ... main gear

30 ... Auxiliary Gear 32 ... Gear

34 ... 4th Link 36 ... Vinyl Reel

38 ... gear 40 ... disc gear

42 ... elastic spring 44 ... second link

46 ... drive link 48 ... feeding gear

50 ... Ratchet Gears 54, 55 ... Ratchets

57, 58 ... elastic spring

The present invention is configured to solve the above object is as follows. That is, the chip mounter tape feeder according to the present invention is a drive motor 10 driven by application of power in a conventional tape mounter tape feeder 1 having a tape feeder 3 and a vinyl feeder 4. ; A worm gear 12 provided on the motor shaft of the drive motor 10; A worm wheel 14 rotated by the worm gear 112; An eccentric cam (17) provided on one side of the worm wheel (14) whose center of rotation is eccentric; A link rod 20 having one end connected to the eccentric cam 170 and oscillated by the rotation of the worm wheel 14; A first link 22 connected to the other end of the link bar 20 while being rotatably installed around the pin 24 to rotate by a swing of the link bar 20; A second link 44 rotatably connected to one end of the first link 22 to transmit power to the tape transfer part 3; And a third link 26 rotatably connected to the other end of the first link 22 to transmit power to the vinyl transfer unit 4. The main gear 29 of the vinyl transfer unit 4 in the above-described configuration. ), A one-way rotating latch is fitted to the rotation support pin 28 of the third link 26 so as to rotate in the vinyl conveying direction, and engages with the main gear 29 to rotate in the opposite direction. The pin 31 of the third link 26 may be inserted through the rotary ratchet. The gear 32 which rotates in engagement with the above-described main gear 29 may be formed of the vinyl winding reel 36. It is possible to provide a rotational force to the rotary drive disc gear 40.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to the accompanying drawings. FIG. 5 is a front view showing a tape feeder according to the present invention, and FIG. 6 is a rear view showing a tape feeder according to the present invention. Figure 7 is a detailed view of the main portion of Figure 5 for explaining the power transmission configuration of the present invention, Figure 8 is an overall operation of the vinyl winding unit, the vinyl conveying unit and the tape conveying unit by one drive means in accordance with the present invention It is explanatory drawing of a power transmission structure.

5 and 6 are a front view and a rear view showing the tape feeder 1 of the present invention, respectively. The tape feeder 3, the vinyl feeder 4, and the vinyl winding-up unit disposed at appropriate positions of the frame 2 are shown. 5), the control panel 6 and the operation panel (7).

The tape conveying unit 3, the vinyl conveying unit 4, and the vinyl winding unit 5 are configured to interlock by one drive motor 10 made of a DC motor. The drive motor 10 is fixed to the frame 2, and the drive motor 10 is electrically connected to the control board 6 to be driven by rotation, and the worm gear 12 is connected to the drive motor 10. It is connected directly or indirectly. This configuration is shown in more detail in FIG. 7, wherein the worm gear 12 transmits the rotational movement of the drive motor 10 to the worm wheel 14, and the worm wheel 14 is rotatably mounted to the frame 2. Fitted with (16).

The pins 16 are fixed so as to be eccentric to the disc shaped cam 17, and the worm wheel 14 and the cam 17 are fixed to each other so as to be integrally operated by the bolt member 18 or the like, and the cam 17 is a link rod ( It is inserted into the circular hole 21 formed in one end of the 20 is rotatable, the other end of the link bar 20 is connected to one side of the first link 22 via the pin 23.

The first link 22 is mounted to the frame 2 via the pin 24 and rotates about the pin 24. The first link 22 connects the third link 26 to the opposite side connected to the link bar 20 via the pin 25, and the third link 26 is connected to the vinyl conveying part 4. One is fitted to the pin 28 so as to rotate about the pin 28 fixed to the frame 2. In addition, the main gear 29 is mounted to the pin 28 so as to rotate only in one direction through a ratchet (not shown), and the auxiliary gear 30 which rotates in engagement with the main gear 29 carries the pin 31. Furnace 3 is mounted to the third link 26, the auxiliary gear 30 is also configured to rotate only in one direction opposite to the main gear 29 via a ratchet not shown.

Another gear 32 is engaged with the main gear 29 so as to rotate in engagement with the gear 32. The gear 32 is rotatably mounted to the fourth link 34 via the pin 33, and the fourth link 34 is rotated. ) Is rotatably mounted to the frame 2 via the pin 35. In addition, the gear 32 is engaged with the gear 38 rotatably fitted to the pin 33, and the gear 38 is formed in a disc shape so that the outer surface of the vinyl winding reel 36 is wound. The disc gear 40 which is made to contact the outer surface and rotate the vinyl winding reel 36 is formed integrally. In addition, the fourth link 34 is connected to the other end of the elastic spring 42, one end of which is connected to the frame 2, the elastic spring 42 is given the gear 32 of the fourth link (34) The elastic force is provided in the direction of engagement with (29).

One end of the second link 44 extending from the tape feeder 3 is connected to one side of the second link 22. The rough configuration of the tape conveyance unit 3 is substantially similar to that of the conventional configuration shown in FIG. 4, but for convenience of description, the reference numerals and names of some components will be described in more detail.

As shown in FIGS. 6 and 8, the other end of the second link 44 is connected to one side of the ratchet gear driving link 46 via a pin 47, and the ratchet gear driving link 46 is connected to the other end of the ratchet gear driving link 46. The other side is fitted to the pin 52 for supporting the feeding gear 48 and the ratchet gear 50 to be rotatable. The feeding gear 48 and the ratchet gear 50 are fixed to each other so as to be integrally behaved, and the drive link 46 is connected to the pin 52 by friction against the contact portion between the drive link 46 and the ratchet gear 50. The rotational movement can be transmitted to the ratchet gear 50 when it is rotated around the ratchet gear 50. The ratchet gear 50 is supported to rotate in one direction by the plurality of ratchets 54 and 55. One ratchet 54 is inserted into a pin 47 connecting the power transmission link 44 and the drive link 46 to rotate about the pin 47 and the ratchet gear 50 moves in one direction. And the other ratchet 55 is fitted to the pin 56 mounted on the frame 2 and rotates about the pin 56, thereby allowing the ratchet gear 50 to be rotated. It is for backlash prevention that prevents rotation by the cheat 54 by one pitch and then rotates in the reverse direction. Of course, these ratchets 55 are configured to receive elastic forces, respectively, by elastic springs 57 and 58 adapted to exert an appropriate amount of elastic force towards the ratchet gear 50.

The tape feeder 1 of the present invention having the configuration as described above has a tape transfer part 3, a vinyl transfer part 4, and a vinyl winding part 5, which are main parts, by a single drive motor 10 made of a DC motor. Will work.

The drive motor 10 is rotated in one direction by receiving power by a command of the control panel by the control command of the chip mounter or a command of the control panel by the operation of the operation panel 7.

Rotation of the drive motor 10 is transmitted to the worm wheel 14 through the worm gear 12, so that the worm wheel 14 rotates in one direction about the pin 16, the cam 17 to the worm wheel 14 Link rod 20 connected through the medium is a linear reciprocating motion in the approximately longitudinal direction. Of course, in response to one rotation of the worm wheel 14, the link bar 20 also performs one straight reciprocating motion, and the first link 22 connected to the link bar 20 via the pin 23 is a pin ( 24) the reciprocating rotational movement to and reciprocates a certain angle.

The rotational motion of the first link 22 is transmitted to the second link 44 and the third link 26. First, the operation of the tape feeder 3 by the second link 44 will be described. .

The second link 44 is linearly reciprocated in the approximately longitudinal direction by the rotary reciprocating motion of the first link 22, which is connected to the ratchet drive link 46 connected to the other end of the second link 44. Transmitted so that the drive link 46 is rotated by a certain angle about the pin (52).

The reciprocating rotational movement of the drive link 46 is transmitted to the ratchet gear 50, so that the ratchet gear 50 tends to rotate the reciprocating movement. However, the ratchet gear 50 is limited to rotate only in one direction by the plurality of ratchets 54 and 55, so that the ratchet gear 50 is 1 during the reciprocating rotation of the drive link 46. The pitch moves in one direction by pitch. At the same time, the feeding gear 48 fixed to behave integrally with the ratchet gear 50 is also rotated in one direction by one pitch during one rotational reciprocation of the drive link 46. Then, the tape is moved by one pitch by the rotation of the feeding gear 48 to provide the chip to the chip mounter as well as to peel off the vinyl from the tape.

Next, how the third link 26 and the components connected thereto are operated by the reciprocating rotation of the first link 22 will be described.

The third link 26 is a reciprocating rotational movement of a predetermined angle around the pin 28 by the rotational reciprocating motion of the first link 22, the main gear 29 according to the rotational direction of the first link 22 ) And the rotational shape of the auxiliary gear 30 will be different. That is, as shown in FIG. 8, the main gear 29 has a rotational movement limited by the ratchet to rotate only in the clockwise direction with respect to the pin 28, and the auxiliary gear 30 has a counterclockwise direction with respect to the pin 31. Since the rotational movement is limited by the ratchet to rotate only, the main gear 29 also centers the pin 28 when the first link 22 rotates clockwise around the pin 28. This means that the main gear 29 does not move relative to the first link 22 at all. At this time, the auxiliary gear 28 meshed with the main gear 29 has a pin. No rotational movement is made around the center 31, but the first link 22 rotates a predetermined angle about the pin 28. As shown in FIG. Of course, in this case, the main gear 29 rotates a certain angle clockwise about the pin 28 so that the gear 32 engaged therewith also rotates a certain angle counterclockwise, thereby engaging the gear 32. The gear 38 and the disc gear 40 also rotate, thus moving the vinyl, which is made to advance between the main gear 29 and the gear 32, by one pitch toward the vinyl winding reel 36, and at the same time Corresponding to the rotation, the vinyl winding reel 36 may rotate to wind the vinyl.

On the other hand, when the first link 22 is rotated counterclockwise around the pin 28, the main gear 29 is maintained without rotating in a stationary state around the pin 28, This means that the main gear 29 moves relative to the first link 22 in the opposite direction. At this time, the auxiliary gear 28 meshed with the main gear 29 rotates counterclockwise around the pin 31 in accordance with the counterclockwise rotation of the first link 22. The auxiliary gear 28 is rotated by a predetermined angle in the counterclockwise direction about the pin 31 in relation to the main gear 29. Of course, in this case, since the main gear 29 does not rotate at all with respect to the pin 28, the rotation of the disc gear 40 engaged therewith is also stopped, and thus the rotation of the vinyl winding reel 36 is also stopped. Stays in the state.

That is, when the drive motor 10 is operated to rotate by supplying power, the worm wheel 14 connected to the worm gear 12 rotates, and when the worm wheel 14 rotates once, the worm wheel 14 is linked to the worm wheel 14. The third link 26 and the second link 44 connected through the rod 20 and the first link 22 are subjected to one reciprocating rotational movement and one reciprocating linear movement, respectively. The vinyl peeled off the tape by one reciprocating rotational movement of the third link 26 proceeds one pitch and is wound on the vinyl winding reel 36, and the tape is slid by one reciprocating linear movement of the second link 44. The pitch advances the chip to the chip mounter while the vinyl can be peeled off the tape by a length equal to one pitch. Of course, the worm wheel 14 is During rotation, one pitch of tape advances, one pitch of vinyl peels off, one pitch of vinyl moves, and the winding of vinyl occurs simultaneously. During the rotation, one pitch of tape advance, one pitch of vinyl peeling, one pitch of vinyl movement and the winding of vinyl are stopped, and this operation is repeated. The present invention is not limited to the above-described embodiment, Various modifications can be made without departing from the spirit of the invention.

According to the tape feeder for a chip mounter according to the present invention as described above, the tape feeder for peeling off the vinyl on the surface of the tape released from the reel by moving the tape feeder, which has a drive motor, and feeds it by one pitch. By interlocking the vinyl winding unit for winding up and the vinyl transfer unit for transferring such vinyl from the tape transfer unit to the vinyl winding unit, the structure is simplified compared with the conventional use of a plurality of drive motors. By reducing the drive motor with a relatively high frequency of failure, the life of feeder and the stability of operation are improved.

Claims (4)

In the tape feeder (1) for a conventional chip mounter having a tape feeder (3) and a vinyl feeder (4), A drive motor 10 driven by application of power; A worm gear 12 provided on the motor shaft of the drive motor 10; A worm wheel 14 rotated by the worm gear 112; An eccentric cam (17) provided on one side of the worm wheel (14), the center of rotation of which is eccentric; A link rod 20 having one end connected to the eccentric cam 170 and oscillated by the rotation of the worm wheel 14; A first link 22 connected to the other end of the link bar 20 so as to be rotatable about a pin 24 so as to rotate in a predetermined range by oscillation of the link bar 20; A second link (44) rotatably connected to one end of the first link (22) to transmit power to the tape transfer part (3); And And a third link (26) rotatably connected to the other end of the first link (22) to transfer power to the vinyl conveying portion (4). delete According to claim 1, wherein the one-way rotation ratchet is inserted into the rotation support pin 28 of the third link (26) so that the main gear 29 of the vinyl conveying portion (4) rotates in the vinyl conveying direction. The chip mounter tape, characterized in that the pin 31 of the third link (26) is fitted through the one-way rotation latch to engage the main gear 29 and rotate in the opposite direction. Feeder. 4. The chip mounter tape according to claim 3, wherein the gear 32 engaged with the main gear 29 rotates to provide rotational force to the disk drive 40 for rotation driving of the vinyl winding reel 36. Feeder.