JPH0150642B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a taping device for electronic components equipped with lead wires, such as fixed film resistors, capacitors, and the like.

[Prior Art] Conventionally, as shown in FIG.
1 and T2, and after taping, feed holes t are made in the tapes T1 and T2 at equal intervals, and the tapes are automatically inserted into the printed circuit board by an automatic insertion machine using these feed holes t. In this case, if the feed hole t and the taping position of the fixed film resistor R, etc. are not set accurately, the feed pitch of the automatic insertion machine will be uneven, and the automatic insertion machine will often make mistakes in inserting the printed circuit board.

In a conventional taping device, a large number of female holes are provided around the outer periphery of a taping wheel for performing taping work, and the female holes are successively opposed to the male holes by intermittent rotation of the taping wheel. The male punching die was moved forward relative to the female punching die, and feed holes t were punched in the tapes T1 and T2. Also, conventionally, in other taping devices,
Taping is performed on the taping wheel, and while the tape is discharged from the taping wheel and reaches the transfer wheel, the punching hole t is drilled using a male punching die and a female punching die.

[Problems to be Solved by the Invention] However, in the case of the former, high precision is required in the arrangement of the female hole punching die, which not only makes the structure complicated and expensive, but also requires the stopping of the taping wheel and the male hole punching die. It is difficult to adjust the timing of advance and retreat of the mold. If these timings were out of order, there were drawbacks such as damage to the male and female molds. In addition, in the latter case, it is difficult to adjust the timing of the drive device for the transfer wheel and the timing of the operation of the male punching die for drilling the feed holes due to expansion and contraction of the tapes T1 and T2, etc. It was not possible to drill the feed hole t. Furthermore, since the feed hole is engaged with the positioning protrusion of the transfer wheel and used for transfer only by this engagement relationship, the feed hole may be damaged and the automatic insertion machine may cause incorrect insertion into the printed circuit board. .

Therefore, the present invention simplifies the structure, improves the precision of the taping position between the sprocket hole and the electronic component, and also allows the automatic insertion machine to smoothly insert the electronic component into the printed circuit board without damaging the sprocket hole. It is an object of the present invention to provide a taping device that can perform the following operations reliably.

[Means for Solving the Problems] Technical means of the present invention for solving the above problems include a tape having a large number of engagement grooves for engaging lead wires of electronic components on the outer periphery, and a tape. A taping wheel having a guiding surface and having a large number of positioning protrusions arranged at equal intervals in the center of the tape guiding surface;
a supply source for supplying a wide first tape to the tape guiding surface; and a taping feed hole provided between the supply source and the taping wheel, the diameter of which is successively smaller in the longitudinal center of the first tape. a crimping roller that crimps a second tape narrower in width than the first tape onto the first tape from above the lead wire of the engaged electronic component in the engagement groove; , a punching device that forms large-diameter feed holes at equal intervals in the first and second tapes crimped by the pressure roller and the taping wheel, and the feed holes formed by the punching device are sequentially engaged. The apparatus is equipped with a transfer wheel having a large number of positioning protrusions provided at equal intervals on its outer periphery, and a drive device that synchronizes and rotates the transfer wheel and the taping wheel intermittently.

[Effect] The effect of this technical means is as follows.
The first tape led out from the supply source has small-diameter taping holes sequentially bored at equal intervals in its longitudinal center by a punching device. The first tape having taping feed holes formed therein is stacked on the tape guiding surface by sequentially engaging the taping feed holes with the positioning protrusions of the taping wheel. On the other hand, the lead wire of the electronic component is engaged with the engagement groove of the taping wheel and placed on the first tape. Then, the second tape is pressed by a pressure roller, and the adhesive surface is moved from above the lead wire to the first tape.
tape and tape them one after the other. After taping the electronic components, perforations are sequentially made in the first and second tapes using a perforation device, and these perforations are positioned on the positioning protrusions of the transfer wheel, and the transfer wheel is rotated. Accordingly, the electronic components after taping are ejected from the device.

[Example] Hereinafter, an example in which the taping apparatus of the present invention is used for taping a fixed film resistor (hereinafter simply referred to as a resistor) will be described in detail with reference to the drawings. 1st
As shown in FIGS. 3 to 3, a bearing 3 is fixed to a base plate 2 of a pedestal 1. As shown in FIGS. A hollow rotating shaft 4 is rotatably supported inside this bearing 3. A homing wheel 5 is fixed to the outwardly projecting end of the hollow rotary shaft 4, and the homing wheel 5 is provided with a large number of chucking devices 6 on its outer periphery. As shown in FIG. 4, each chucking device 6 consists of a fixed chuck member 7 and a movable chuck member 8. The collar of the movable chuck member 8 is rotatably supported by a shaft 9, and the fixed chuck member is supported by a tension spring 10. 7, and the main body R1 of the resistor R can be gripped between the distal ends of the fixed chuck member 7 and the movable chuck member 8. A bearing 11 is supported at the base of each movable chuck member 8,
These bearings 11 are in contact with the outer peripheral surface of a cam 12 fixed on the bearing 3. This cam 12
has a peak (not shown) on its outer periphery, and when the bearing 11 rides on this peak, the movable chuck member 8 resists the elasticity of the tension spring 10 and moves to the fixed chuck member 7.
The main body R1 of the resistor R can be released. As shown in FIG. 1, a conveying chain 13 is movably provided under the homing wheel 5, and the lead wire R2 of the resistor R is engaged with an attachment protruding from the link plate to sequentially convey the resistor. be done. A first supply wheel 14 is provided above the conveyance chain 13. As shown in FIG. 2, a large number of grooves 15 for engaging the resistors R are provided at equal intervals on the outer periphery of the supply wheel 14 to receive the resistors R conveyed by the conveyance chain 13, and to receive the resistors R conveyed by the conveyance chain 13. It can be moved upwards with guidance. A second supply wheel 17 is provided above the first supply wheel 14 . A large number of grooves 18 for engaging the resistors R are provided at equal intervals on the outer circumference of the second supply wheel 17 to receive the resistors R transferred by the first supply wheel 14 and guide the guide member 19. can be transported upwards. The resistor R transferred by this second supply wheel 17 is transferred to the chucking device 6 of the homing wheel 5.
It can be grasped by

The homing wheel 5 has the second
A kink forming device 20, a bending device 21, and a folding device 22 are sequentially provided toward the downstream side of the supply wheel 17. Therefore, the kink forming device 2
0 to form a kink R2a on the lead wire R2 as shown in FIG.
The lead wire R2 can be folded down by the folding device 22.

As shown in FIG. 3, a bearing 24 is fixed to the substrate 23 of the pedestal 1 inside the hollow rotating shaft 4 so as to be eccentric with respect to the hollow rotating shaft 4. As shown in FIG. A rotary shaft 25 is rotatably supported by this bearing 24 . A taping wheel 26 is mounted on the outwardly projecting end of the rotating shaft 25. As shown in FIGS. 2 and 3, on the outer periphery of the taping wheel 26 on the homing wheel 5 side, engaging protrusions 27 and 28 and lead wires on both sides of the resistor R connected to these engaging protrusions 27 and 28 are connected. A set of engagement grooves 27a, 28a for engagement is provided, and these multiple sets of engagement grooves 27a, 28a are provided at equal intervals, and the lead wire R2 of the resistor R homed on the homing wheel 5 is connected to the homing wheel 5. You can receive it. A gear 26a is attached to the outer surface of the taping wheel 26, and a tape guide surface 29 is provided on the outer periphery of the taping wheel 26 between the engagement projections 27, 28 and the gear 26a. A large number of positioning protrusions 30 are provided at equal intervals on the outer periphery of the central portion of the tape guiding surface 29. A gear 31 is mounted on the inwardly projecting end of the hollow rotating shaft 4, and a gear 32 is mounted on the inwardly projecting end of the rotating shaft 25.
32 is linked to a motor (not shown) via a power transmission mechanism (not shown) such as a gear or a barrel cam. The hollow rotating shaft 4, the homing wheel 5, the rotating shaft 25, and the taping wheel 26 are rotated intermittently by the drive of the motor.
At this time, as shown in FIGS. 1 and 2, the chucking device 6 of the homing wheel 5 and the engaging grooves 27a, 28a of the taping wheel 26
and are set to match sequentially on the downstream side of the tilting device 22.

As shown in FIG. 1, on the tape guide surface 29 of the taping wheel 26, there is a tape bobbin 3 from which a wide first tape T1 serving as a mount is supplied.
3, guide rollers 34, 35 and presser roller 36
It is supplied through A brake device 37 and a punching device 38 for the taping feed hole ta (see FIG. 7) are provided between the guide rollers 34 and 35. The details are as clear from Figures 5 and 6.
A first tape T is attached to the support member 39 attached to the
A female punching die 40 is attached to the lower side of the hole 1. A mounting plate 42 is fixed to a bracket 41 attached to the pedestal 1 through elongated holes 43 and screws 44 so that its position can be adjusted, and the base of an arm 45 is fixed to this mounting plate 42. A holder 46 is supported at the tip of the arm 45 so as to be movable up and down via a bearing 47, and a male punching die 48 is attached to the downwardly projecting end of the holder 46 above the first tape T1. A shaft 49 is rotatably supported in the middle of the holder 46 via a bearing 50, and one end of a lever 51 is attached to the shaft 49. A shaft 52 is attached to the other end of the lever 51,
A cam follower supported on this shaft 52 is linked to a cam (both not shown). Therefore, the lever 51 is intermittently swung up and down by the rotation of the cam, and thereby the holder 46 and the male punching die 48 are
is moved up and down, and the female punching die 40 can be used to punch a taping feed hole ta in the longitudinal direction of the center of the tape T1.

As shown in FIGS. 1 and 2, the chucking device 6 of the homing wheel 5 and the engaging grooves 27a, 28a of the taping wheel 26 are pressed against the tape guide surface 29 of the taping wheel 26 at a matching point. A roller 53 for use is provided. The pressure roller 53 is rotatably supported by a shaft 55 on a support member 54 rotatably supported by the pedestal 1, and is biased toward the tape guide surface 29 by the elasticity of a compression spring 56. The crimping roller 53 has a metal wheel wrapped around a heat-resistant rubber (silicon type, nitrile type), has a built-in heater (not shown), and has a side surface on which the lead wire R2 of the resistor R can be fitted. A large number of semicircular grooves 57 are formed at equal intervals. A gear (not shown) mounted on a shaft 55 that supports the pressure roller 53 is meshed with the gear 26a (see FIG. 3) on the taping wheel 26, so that the pressure roller 53 and the taping wheel 26 are connected to each other. It is designed to rotate at a constant circumferential speed. It is pulled out from a tape bobbin (not shown) which is a supply source, and
The adhesive surface of the second tape T2, which is narrower than the tape T1, is pressed against the first tape T1 from above the lead wire R2 of the resistor R by the pressure roller 53. At this time, the tape T2 is inserted into the engaging grooves 27a, 28.
a and the positioning protrusion 30, and the groove 57 of the pressure roller 53 can fit into the upper half of the lead wire R2. A guide roller 58 is provided below the crimping roller 53, and the lead wire R2 of the resistor R is taped and discharged by the pressure of the crimping roller 53, and the first and second tapes T1 and T2 are held horizontally. derived in the direction. A feed hole punching device 67 is provided in front of the guide roller 58. This punching device 67 is used for the taping feed hole.
It is constructed in the same way as the drilling device 38 of ta, and has a first and second
The feed holes tb (see FIG. 7) can be sequentially formed at equal intervals in the longitudinal center of the tapes T1 and T2. Therefore, the female punching die 40 and the male punching die 48 of the feed hole punching device 67 are formed to have a larger diameter than the female punching die 40 and the male punching die 48 of the taping feed hole punching device 38. A transport wheel 59 is rotatably supported by a rotating shaft 60 in front of the feed hole punching device 67 . The transfer wheel 59 is formed to have the same diameter as the taping wheel 26, and is provided with positioning protrusions 61, which are the same in number as the positioning protrusions 30 and have a larger diameter than the positioning protrusions 30, at equal intervals in the center of the outer periphery. . Sprockets (or timing wheels) 62 and 63 are mounted on the rotation shaft 60 of the transfer wheel 59 and on the rotation shaft 25 of the taping wheel 26, respectively. or a timing belt) 64 is installed. Through these sprocket (or timing wheel) 63, chain (or timing belt) 64, and sprocket (or timing wheel) 62, the transfer wheel 59 can be rotated at the same circumferential speed as the taping wheel 26. The positioning protrusion 61 of the guide wheel 59 can be sequentially engaged with the feed holes tb in the tapes T1 and T2 led out from the guide roller 58. A tape pressing roller 65 is provided above the transporting wheel 59, and this tape pressing roller 65 can prevent the tapes T1 and T2 from coming off the transporting wheel 59. Further, a discharge roller 66 which also serves as a tape presser is provided on the side of the transfer wheel 59.
The tapes T1 and T2 taping the lead wire R2 of the resistor R are discharged by the discharge roller 66 and wound up.

Next, the operation of the above embodiment will be explained. 1st
The resistor R transported by the transport chain 13 shown in the figure passes through the first and second supply wheels 14, 17, and is then gripped by the chuck device 6 of the homing wheel 5 shown in FIG. As the homing wheel 5 rotates intermittently, the kink forming device 20 forms a kink R2 in the lead wire R2 of the resistor R held by the chucking device 6 as shown in FIG. 21, a U-shaped bent portion R2b is formed on the lead wire R2, and a tilting device 22 is used to tilt the resistor R so that the lead wires R2 on both sides become flat with respect to the outer periphery of the homing wheel 5. On the other hand, the first tape T1 drawn out from the tape bobbin 33 has taping feed holes ta sequentially bored at equal intervals in its longitudinal center by a punching device 38. The first tape T1 having the taping feed hole ta is passed through the guide roller 35 and the press roller 36, and the taping feed hole ta is sequentially engaged with the positioning protrusion 30 of the taping wheel 26, thereby forming the tape. It is superimposed on the guiding surface 29. After the homing operation has been completed, the resistor R has its lead wire R2 engaged with the engaging grooves 27a and 28a of the taping wheel 26, and rides on the first tape T1. The second tape T2 pulled out from the tape bobbin is pressed by the pressure roller 5.
3, the adhesive surface is pressed and adhered to the first tape T1 from above the lead wire R2, and taping is performed in sequence. After taping the resistor R, the tapes T1 and T2 are guided by a guide roller 58, and a feed hole punching device 67 sequentially punches feed holes tb in the tapes T1 and T2 as shown in FIG. feed hole
The first and second tapes T1 and T2 having the tb perforated therein reach the transport wheel 59, and the positioning protrusion 61 of the transport wheel 59 has the transport hole of the tape T1.
ta is positioned, and as the transfer wheel 59 rotates, it is discharged from the apparatus.

Note that puncture needles may be provided protruding at multiple locations on the outer periphery of the transfer wheel 59, and the puncture needles may be used to puncture the first tape T1 to prevent slipping. It is desirable to set the thickness to be lower than the thickness of T1. Also, the taping wheel 2 is placed on the outer periphery of the transfer wheel 59.
Similarly to 6, multiple sets of engagement grooves for engaging the lead wires R2 on both sides of the resistor R may be provided at equal intervals, thereby maintaining the relative positional accuracy between the resistor body R1 and the feed hole tb. This makes it possible to prevent sudden slippage accidents and perform early detection. As a means of early detection, for example, when the lead wire R2 is not engaged with the engagement groove, the resistor main body R1 protrudes outward, and this can be detected by a sensor, which is the present invention. In addition, various design changes can be made without departing from the basic technical idea.

[Effects of the Invention] As is clear from the above description, according to the present invention, a small diameter taping feed hole is formed in the longitudinal direction of the center of the wide first tape, and the small diameter taping feed hole is formed in the longitudinal direction of the center of the wide first tape. Since the taping position of the electronic component with lead wires and the subsequent drilling position of the large diameter sprocket hole formed on the outer periphery of the taping hole are determined based on this, the taping position of the electronic component with lead wires On the other hand, the feed hole can be drilled accurately. In addition, the feed hole is formed with a large diameter after taping on the outer periphery of the taping feed hole, and the transfer wheel equipped with a protrusion for positioning the feed hole is rotated intermittently in synchronization with the taping wheel. Automatic insertion into the printed circuit board can be performed smoothly and reliably without damaging the feed hole. Furthermore, since it is only necessary to add a punching device for a small-diameter taping feed hole, there are advantages such as a simple structure.

[Brief explanation of drawings]

Fig. 1 is a schematic side view showing one embodiment of the taping device of the present invention, Fig. 2 is an enlarged view of its main parts, Fig. 3 is a cross-sectional view taken along the - arrow direction, and Fig. 4 is a taping device used in the present invention. Partial enlarged view of the homing wheel, No. 5
The figure is a partially cutaway front view of the punching device used in the present invention.
FIG. 6 is a cross-sectional view taken along the - arrow, FIG. 7 is a plan view showing a state in which a resistor is taped with the taping device of the present invention, and FIG. 8 is a plan view showing a state in which a resistor is taped with a conventional taping device. It is a diagram. 5...Homing wheel, 6...Chucking device, 12...Cam, 13...Transporting chain, 14, 15...Supplying wheel, 20...Kink forming device, 21...Bending device, 22... ...Folding device, 26...Taping wheel, 27
a, 28a... Engagement groove, 29... Tape guide surface, 30... Positioning protrusion, 37... Brake device, 38... Taping feed hole punching device, 4
0...Female die for drilling, 48...Male die for drilling, 53...
...Crimping roller, 59...Transfer wheel, 61
... Positioning protrusion, 67 ... Feed hole punching device,
R...resistor, R1...body, R2...lead wire, T1...first tape, T2...second tape, ta...taping hole, tb...spring hole.

Claims (1)

[Claims] 1. A taping wheel that has a large number of engagement grooves for engaging lead wires of electronic components on its outer periphery, has a tape guiding surface, and has a large number of positioning protrusions provided at equal intervals in the center of the tape guiding surface. a supply source for supplying a wide first tape to the tape guiding surface; and a taping supply source provided between the supply source and the taping wheel and having tapering tapes of smaller diameters arranged in the longitudinal center of the first tape. a punching device that forms feed holes at equal intervals; and a second tape having a width narrower than that of the first tape.
a crimping roller for crimping the tape onto the first tape from above the lead wire of the electronic component engaged in the engagement groove, and the first and second tapes crimped by the crimping roller and the taping wheel. A perforation device that forms large-diameter feed holes at equal intervals; a transfer wheel that has a large number of positioning protrusions provided at equal intervals on its outer periphery for sequentially engaging the feed holes formed by the perforation device; A taping device comprising a transfer wheel and a drive device that synchronizes and rotates the taping wheel intermittently.