KR20090037878A - Positioning apparatus for carrier tape - Google Patents

Abstract

A positioning device of carrier tape is provided to make the exact positioning possible since the tooth form broadens the carrier hole a little bit. A positioning device of carrier tape comprises a pulley and an auxiliary pulley which places a tooth profile(15) of the involute curve on the circular perimeter, and a carrier tape(7) which is installed between the pulley and the auxiliary pulley. In the pulley and assistant pulley, the circular perimeter of the base circle is comprised of the integral multiple of the feed pitch of the carrier tape. The tooth form is arranged as the same pitch as the pitch of the carrier hole. The diagonal length formed with the face width of the tooth form of pulley and tooth thickness of square.

Description

Positioning device for carrier tape {POSITIONING APPARATUS FOR CARRIER TAPE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning device for a carrier tape used in a taping system of a work, and more particularly to an improvement in the conveying accuracy of a carrier tape and an improvement in the positioning accuracy for inserting a work into the carrier tape. will be.

In the taping system of the workpiece | work which conveys and inspects a workpiece | work and carries it in a carrier tape, it is an apparatus which conveys a carrier tape by the taping process which inserts the workpiece | work which completed the inspection into the cavity of a carrier tape, and conventionally holds a carrier tape horizontally. A pulley having a diameter slightly shorter than the circular transfer hole provided for transporting on the carrier tape directly below the carrier tape, is rotated, and the pin is inserted into the transfer hole. There is an apparatus for conveying a carrier tape.

However, in this apparatus, since the diameter of the pin is slightly smaller than the diameter of the conveying hole, particularly when there is a change in the diameter of the conveying hole, the positioning of the carrier tape for moving the workpiece into the carrier tape can be performed with high accuracy. It was difficult.

Moreover, in this apparatus, since the said pin was caught by the said conveyance hole at the time of conveyance of a carrier tape, the phenomenon which the carrier tape vibrated to an up-down direction, and the workpiece accommodated in the carrier tape cavity jumped out easily occurred.

In order to prevent this, a roller attachment roller and a pressing roller are provided on the downstream side of the pulley, and the carrier tape is sandwiched from the top and bottom by both rollers, and the roller is pulled by friction by rotating the attachment roller, and the rollers are released from the pulley side. There was an apparatus for positioning the carrier tape.

However, this apparatus tends to cause variations in the conveying accuracy of the carrier tape due to the eccentricity caused by the processing accuracy of the roller having a knurled roller, and when the teeth are inserted into the conveying holes, the friction of the carrier tape There was a problem such that the amount of conveyance fluctuated when the dust generated by cutting the base material entered between the carrier tape and the roller having a knurled roller.

In recent years, there has been a strong demand for speeding up the taping system, and in order to cope with this, it is necessary to carry the carrier tape at a high speed, and stabilization and high precision of the carrier tape transfer have been demanded.

Moreover, since the cavity of a carrier tape also tends to become small with size reduction of a workpiece | work shape, high precision of positioning of a carrier tape is calculated | required.

In order to realize the performance improvement of conveyance and positioning of these carrier tapes, the correspondence by the prior art as described above is very difficult.

Herein, the present invention has been made in view of the existence of the above-described problems, and in the taping system of the work, it is possible to convey and position the carrier tape stably and with high precision, and to cope with the high speed of the taping system and the miniaturization of the work. It is to provide a positioning device of the carrier tape.

The carrier tape positioning device according to the present invention is a carrier tape positioning device for use in a taping system of a workpiece for transporting and inspecting a workpiece and moving the workpiece into a carrier tape. The circumference of the base circle of the pulley in which the tooth of the involute curve to be inserted is arranged on the circumference is composed of an integral multiple of the carrier tape feed pitch, and the tooth disposed on the circumference of the pulley is the transfer. It is characterized by arrange | positioning at the same pitch as the pitch of a hole.

That is, in the present invention, since the tooth shape is an involute curve, the tooth tape does not get caught on the carrier tape during conveyance of the carrier tape, and the vibration of the carrier tape is not generated.

Therefore, the workpiece accommodated in the carrier tape does not stick out, and the carrier tape can be conveyed and positioned with high stability and accuracy.

The carrier tape positioning device according to the present invention has a length of a rectangular diagonal formed by the tooth width and the tooth thickness of the teeth, which is slightly longer than the diameter of the transfer hole, when the tooth is inserted into the transfer hole. It can be said that the tooth slightly widens the transfer hole.

That is, in the present invention, in the taping step, when the tooth is inserted into the conveying hole of the carrier tape, the tooth slightly widens the conveying hole. Therefore, even if there is a change in the diameter of the feed hole, accurate positioning becomes possible.

Moreover, the positioning apparatus of the carrier tape which concerns on this invention can form the groove | channel for discharge | release of dust in the tooth shape of the said tooth shape.

That is, in the present invention, when the teeth are inserted into the conveying holes, the dust generated by the base material of the carrier tape due to the friction between them collects in the grooves for dust, and the air blows during the regular maintenance of the device. can be cleaned using an air blow). Therefore, dust does not adhere to the teeth and cause problems in operation.

Moreover, the positioning apparatus of the carrier tape which concerns on this invention has an auxiliary pulley other than the said pulley, The auxiliary pulley arranges the auxiliary pulley teeth of the involute curve inserted in the said transfer hole on a circumference, A circular circumference is composed of an integer multiple of the conveying pitch, and the auxiliary pulley teeth are disposed on the circumference of the auxiliary pulley at the same pitch as the pitch of the conveying hole, and are formed in the tooth width and tooth thickness of the auxiliary pulley teeth. It can be said that the diagonal length is configured to be slightly shorter than the diameter of the conveying hole, and the carrier tape is temporarily installed between the pulley and the auxiliary pulley and conveyed.

That is, in the present invention, the teeth of the auxiliary pulley can be inserted with a margin in the conveying hole of the carrier tape. Therefore, the stable and accurate carrier tape can be conveyed or positioned.

Moreover, the carrier tape positioning apparatus which concerns on this invention is equipped with the V notch which is reciprocally movable in the outer side of the said pulley, is united with a pulley at equal intervals around the positioning plate which rotates intermittently simultaneously with a pulley. By inserting the V notch into the provided positioning groove, it can be said that the positioning when the workpiece is stored in the carrier tape is executed.

In addition, the carrier tape positioning device according to the present invention has a roller and a roller pressing member in addition to the pulley, and the carrier tape is sandwiched between the roller and the roller pressing member so that the carrier tape has the pulley and the roller and the roller. It can be said that it is temporary and conveyed with a press member.

In addition, the summary of the present invention does not enumerate all the features required for the present invention, but the subcombination of these feature groups can also be invented.

According to the positioning device of the carrier tape according to the present invention, when the teeth are inserted into the conveying holes of the carrier tape in the taping process, the teeth are slightly widened so that accurate positioning is possible even if the conveying hole diameter varies. Do.

In addition, since the tooth shape has an involute curve, the carrier tape does not get caught in the conveyance of the carrier tape, and the carrier tape does not generate vibration. For this reason, the positioning apparatus of the carrier tape which concerns on this invention enables the conveyance and positioning of a stable and highly accurate carrier tape, and can respond to the speed | rate of a taping system and the downsizing of a workpiece | work.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment for implementing this invention is described using drawing. In addition, each of the following embodiments does not limit the invention according to each claim, and, in each of the embodiments, all of the configurations of the described features are not necessarily essential to the solving means of the invention.

In addition, each embodiment demonstrated below illustrates the case where the carrier tape positioning apparatus which concerns on this invention is applied to the taping system of a workpiece | work.

[First Embodiment]

1 is a front view of a taping system of a workpiece according to a first embodiment. 2 is a top perspective view of the taping system of the workpiece | work which concerns on 1st Embodiment.

The component feeder 1 with which the taping system of a workpiece is equipped has a function to arrange and align the direction of the supplied workpiece.

The linear feeder 2 has a function of receiving the workpieces aligned from the component feeder 1 and transporting them in a line state.

The index table 3 is formed horizontally while forming a circle, and is intermittently rotated in the direction of the arrow in FIG. 2 around the rotating shaft 5 in the vertical direction by the action of a power source (not shown).

In the periphery of the index table 3, there exists the workpiece storage hole which is not shown in figure which drilled the hole facing outward, and accommodates the workpiece conveyed by the linear feeder 2 separately there.

The separation supply part 4 has a function of moving a workpiece from the linear feeder 2 to the workpiece storage hole of the index table 3.

The taping portion 6 has a function of storing the work in the carrier tape 7.

Next, the carrier tape 7 will be described in detail.

3 is a top view of the carrier tape which concerns on 1st Embodiment.

In the vicinity of the edge of the carrier tape 7, circular conveyance holes 12 are arranged in a line along the tape in the longitudinal direction at regular intervals T.

Moreover, on the carrier tape 7, the cavity 13 of the recessed part for accommodating a workpiece | work in the taping part 6 is arrange | positioned at equal intervals.

Since the conveying hole 12 is used for positioning when storing a workpiece in the cavity 13, it has a correlation with the arrangement of the cavity.

3, the example which provided one conveyance hole 12 with respect to two cavities 13 is shown.

Referring again to FIGS. 1 and 2, the reel 8 has a function of winding an unused carrier tape, and the winding reel 11 has a workpiece accommodated in the taping part 6, and the workpiece is not shown. After affixing the tape which coat | covers the cavity accommodated, it has a function which winds up the carrier tape 7 completely. A pulley 9 is provided just below the taping portion 6.

Next, the pulley which concerns on 1st Embodiment is demonstrated. 4 is a front view of the pulley which concerns on 1st Embodiment. 5 is a detailed view of the portion B of FIG. 4.

The pulley 9 is circular and rotates intermittently in the direction of the arrow of FIG. 4 about the rotating shaft 14 in the horizontal direction.

The pulley 9 does not have a power source for rotation, and as will be described later, by synthesizing a carrier tape 7 between the auxiliary pulley 10 having the power source, the pulley 9 is synchronized with the rotation of the auxiliary pulley 10. To rotate.

The teeth 15 are arranged at equal intervals around the pulley 9.

The positioning plate 16 incorporated in the pulley 9 rotates intermittently with the pulley 9 about the rotation shaft 14.

Positioning grooves 17 are provided at equal intervals around the positioning plate 16. Immediately below the pulley 9, a V notch 18 that moves up and down in the vertical direction is provided. The work is moved to the cavity 13 of the carrier tape 7 by raising the V notch 18 in the state where the carrier tape is stopped and inserting it into the positioning groove 17 at the bottom of the positioning plate 16. When positioning is executed.

In the lower part of the tooth 15, the position detection hole 19 for checking whether positioning was performed correctly is provided along the circumference of the pulley 9 at equal intervals.

As shown in more detail in FIG. 5, the shape of the tooth 15 is an involute curve, and the pitch T ′ of the tooth 15 over the circumference coincides with the pitch T of the feed hole 12. have. In addition, the circumference of the base circle of the pulley 9 becomes an integer multiple of the conveyance pitch of the carrier tape 7.

In addition, when the tooth 15 is inserted into the feed hole 12, the base material of the carrier tape 7 is shaved by both frictions to become dust, which may cause problems in operation by attaching to the tooth. In the tooth of the tooth 15, a dust groove 20 for releasing dust is formed to prevent dust from adhering to the tooth.

Next, the relationship between the tooth 15 and the size of the feed hole 12 is demonstrated using FIG.

6 is a figure which shows the relationship between the tooth shape around the pulley which concerns on 1st Embodiment, and the magnitude | size of the conveyance hole of a carrier tape.

When the teeth 15 are viewed from the outer circumferential side of the pulley 9, a square is formed with the tooth width and the tooth thickness. The diagonal length of the rectangular shape is slightly longer than the diameter of the conveying hole, and when the tooth 15 is fitted into the conveying hole 12, the tooth is made to slightly spread the conveying hole.

FIG. 7: is a figure which shows the state in which the tooth form which concerns on 1st Embodiment was fitted into the conveyance hole. FIG. 7 also shows the shape of the tooth 15 inserted in the feed hole 12 from the front of the pulley 9.

In addition, the figure seen from the arrow C direction of FIG. 7 is shown in FIG.

The diagonal length of the tooth 15 is slightly longer than the diameter of the feed hole 12, so that the feed hole extension 21 occurs in four corners of the tooth 15. As shown in FIG.

1 and 2, in the taping system of the workpiece according to the first embodiment, an auxiliary pulley 10 is provided between the taping portion 6 and the winding reel 11.

The shape of the auxiliary pulley 10 is the same as the pulley 9, but has a tooth shape at equal intervals like the pulley 9, but the positioning plate 16, the V notch 18, the position detection hole 19 Don't have

In addition, the auxiliary pulley 10 rotates intermittently around a rotating shaft in the horizontal direction by the action of a power source (not shown) to convey the carrier tape.

Unlike the pulley 9, the auxiliary pulley 10 has a diagonal length of a rectangle formed by the tooth width and the tooth thickness of the peripheral teeth slightly shorter than the diameter of the feed hole 12. For this reason, when the tooth of the auxiliary pulley 10 is inserted into the conveying hole 12, the conveying hole expansion part 21 does not generate | occur | produce, and a conveying hole when conveying the carrier tape 7 according to rotation of a tooth. (12) is only slightly modified.

The carrier tape 7 is tentatively transported between the pulley 9 and the auxiliary pulley 10, and the pulley 9 rotates in synchronization with the rotation of the auxiliary pulley 10.

Next, the operation of the taping system according to the first embodiment described above will be described. The workpiece supplied to the component feeder 1 is aligned with the direction according to the action of the component feeder 1, and is transferred to the linear feeder 2. By the action of the linear feeder 2, it is conveyed in a line and reaches the index table 3. Further, the work is individually accommodated in a work storage hole (not shown) provided in the index table 3 by the action of the separate supply part 4.

The workpiece accommodated in the workpiece storage hole is conveyed to a characteristic measuring unit (not shown) by intermittently rotating the index table 3 in the direction of the arrow in FIG. 2, and measurement of various characteristics is performed.

As a result of the measurement, the workpiece determined to be defective is discharged from the workpiece storage hole by a discharge function not shown.

As a result of the measurement, the workpiece determined to be a good product arrives at the taping portion 6 in accordance with the intermittent rotation of the index table 3 while being accommodated in the workpiece storage hole.

The carrier tape 7 wound on the reel 8 is hypothesized between the pulley 9 provided directly below the taping portion 6 and the auxiliary pulley 10 provided downstream of the pulley 9, and is not shown. As the auxiliary pulley 10 rotates intermittently in response to the action of a power source which does not, the pulley 9 is intermittently rotated and conveyed in synchronization with the auxiliary pulley 10.

The teeth 15 arranged at the same pitch as the pitch T of the feed hole 12 of the carrier tape 7 are arranged around the pulley 9 and the auxiliary pulley 10, and wound on the reel 8. The carrier tape is conveyed.

The tooth shape 15 of the pulley 9 is an involute curve, and the diagonal length of the rectangle formed by the tooth width and the tooth thickness is slightly longer than the diameter of the feed hole 12, so that the tooth 15 is formed in the feed hole 12. The teeth 15 widen the feed hole 12 slightly when fitted. For this reason, even if there exists a fluctuation | variation in the diameter of the conveyance hole 12, it can reliably fit.

When the carrier tape 7 reaches the taping part 6 and stops by the intermittent rotation of the pulley 9, and the workpiece can be moved, the V notch provided directly below the pulley 9 ( 18 rises and is inserted into the positioning groove 17 provided at equal intervals around the positioning plate 16.

Thereby, positioning of the carrier tape 7 for carrying a workpiece | work to the cavity 13 of the carrier tape 7 is performed.

When the positioning is executed, the workpiece in the workpiece storage hole of the index table 3 is transferred to the cavity 13 of the carrier tape 7.

Here, although the pitch of the tooth shape of the pulley 9 and the auxiliary pulley 10 is the same, since the pulley 9 which does not have a power source rotates in synchronization with the rotation of the auxiliary pulley 10 which has a power source, a carrier tape When the carrier tape 7 is conveyed to the taping portion 6 by the pulley 9 due to an error in the pitch of the conveying hole 12 of (7), it is impossible to accurately position the V notch 18. The carrier tape 7 may stop at the position.

In order to prevent this, the light generated from a light source (not shown) with respect to the position detection hole 19 provided at equal intervals along the circumference of the pulley 9 in the lower part of the tooth 15 is shown. By detecting with a non-optical sensor, a check is made as to whether or not the carrier tape 7 is stopped at a position capable of accurate positioning.

If the stop position is not correct, the auxiliary pulley 10 controls the power source (not shown) to correct the stop position correctly.

When positioning is correctly performed and the workpiece is inserted into the cavity 13, the V notch 18 lowers, the pulley 9 and the auxiliary pulley 10 rotate intermittently to convey the carrier tape, but the teeth 15 ), The tooth shape 15 is caught in the conveying hole 12 of the carrier tape 7 when the carrier tape 7 is displaced from the pulley 9 as the pulley 9 is rotated because of the shape of the involute curve. The carrier tape 7 is not vibrated. Thereby, the workpiece accommodated in the cavity 13 of the carrier tape 7 does not protrude out.

In addition, when the tooth 15 is inserted into the feed hole 12, the base material of the carrier tape may be crushed to become dust due to the friction of both, and the dust for discharging dust is provided in the tooth of the tooth 15. Since the groove 20 is formed, dust adheres to the teeth 15, so that no problem occurs in operation.

The dust collected in the dust grooves 20 is cleaned using an air blow or the like during the periodical maintenance of the device.

On the other hand, the shape and function of the auxiliary pulley 10 are the same as the pulley 9 except that the positioning plate 16, the V notch 18, and the position detecting hole 19 are not provided. Alternatively, the diagonal length of the rectangle formed by the tooth width and tooth thickness of the surrounding teeth is slightly shorter than the diameter of the feed hole 12. For this reason, the tooth shape of the auxiliary pulley 10 can be inserted with a margin to the conveyance hole 12 of the carrier tape 7.

The carrier tape conveyed in this way is wound up in the winding reel 11, after attaching the tape which coat | covers the cavity in which the workpiece | work was accommodated in the tape adhesion part which is not shown in figure, and turns into a finished product.

Second Embodiment

Next, as a 2nd Embodiment which concerns on this invention, instead of the auxiliary pulley 10 which concerns on 1st Embodiment mentioned above, the tapering system using a roller and a roller pressing member is demonstrated. Here, FIG. 10 is a figure which shows the roller which concerns on 2nd Embodiment, and a roller pressing member (the structure of A part of FIG. 1).

The roller and the roller pressing member shown in FIG. 10 are members used instead of the auxiliary pulley 10 in the A part of FIG.

The roller 22 rotates intermittently in the direction of the arrow shown in FIG. 10 around the rotating shaft 23 in the horizontal direction by the action of a power source using a stepping motor (not shown) in a smooth circular circumference.

There is a roller pressing member 24 above the roller 22, and the carrier tape 7 is sandwiched by the roller 22 and the roller pressing member 24.

In this state, the roller 22 rotates intermittently and conveys a carrier tape. Since both sides of the portion to which the carrier tape 7 is sandwiched are smooth, the carrier tape is shaved by friction and no dust is generated.

The carrier tape 7 is tentatively conveyed between the pulley 9, the roller 22, and the roller pressing member 24.

9 is a front view of a pulley according to the second embodiment.

The pulley 9 is circular and rotates intermittently in the direction of the arrow shown in FIG. 9 around the rotation axis 14 in the horizontal direction by the action of a power source using a stepping motor (not shown). The teeth 15 are arranged at equal intervals around the pulley 9. The shape of the tooth 15 is the same as the case shown in FIG. Each power source of the pulley 9 and the roller 22 simultaneously carries out the same control from the control part which is not shown in figure, and conveys the carrier tape 7 by both rotating synchronously and intermittently.

In addition, the operation in 2nd Embodiment is the same as that of the 1st Embodiment. However, in the taping part 6, positioning of the carrier tape 7 for moving the workpiece | work in a workpiece storage hole to the cavity 13 of the carrier tape 7 is carried out by the pulley 9 and the roller ( It is a power source using a stepping motor (not shown) which rotates intermittently in synchronization with 22).

Moreover, when the carrier tape 7 is conveyed to the taping part 6 according to the pitch error of the conveyance hole 12 of the carrier tape 7 demonstrated in 1st Embodiment, it is in the position which cannot perform accurate positioning. In order to prevent the phenomenon in which the carrier tape 7 stops, in the second embodiment, the carrier tape 7 is simply transferred as necessary between the roller pressing member 24 by smoothing the circumference of the roller 22. By this, positioning control is performed.

As mentioned above, although preferred embodiment of this invention was described, the technical scope of this invention is not limited to the range as described in said each embodiment.

It is possible to add various changes or improvements to each said embodiment. It is clear from description of a claim that the form which added such a change or improvement can also be included in the technical scope of this invention.

1 is a front view of a taping system of a workpiece according to a first embodiment.

2 is a top perspective view of a taping system of a workpiece according to a first embodiment;

3 is a plan view of a carrier tape according to the first embodiment.

4 is a front view of the pulley according to the first embodiment.

FIG. 5 is a detail view of portion B of FIG. 4; FIG.

Fig. 6 is a diagram showing the relationship between the teeth around the pulley according to the first embodiment and the size of the transfer hole of the carrier tape.

FIG. 7 is a view showing a state in which a tooth according to the first embodiment is fitted into a conveying hole; FIG.

FIG. 8 is a view from the arrow C in FIG. 7; FIG.

9 is a front view of a pulley according to the second embodiment.

10 is a view showing a roller and a roller pressing member (the configuration of part A of FIG. 1) according to the second embodiment.

[Description of the code]

1: parts feeder 2: linear feeder

3: index table 4: separate supply

5: Rotation axis of index table 6: Taping part

7: carrier tape 8: reel

9: pulley 10: auxiliary pulley

11: reel 12: feed hole

13: cavity 14: axis of rotation of the pulley

15: tooth 16: positioning plate

17: Positioning groove 18: V notch

19: Position detection hole 20: Dust groove

21: feed hole extension 22: roller

23: rotation axis of the roller 24: roller pressing member

Claims (3)

In the positioning device of the carrier tape used for the taping system of the workpiece which conveys and inspects a workpiece | work and carries it in a carrier tape, A pulley and an auxiliary pulley having an involute curve tooth inserted in a circular conveying hole provided for conveyance on a carrier tape arranged on a circumference are provided to install a carrier tape between the pulley and the auxiliary pulley. The auxiliary pulley is composed of the circumference of the base circle is an integer multiple of the feed pitch of the carrier tape, The teeth arranged on the circumference of the pulley and the auxiliary pulley are arranged at the same pitch as the pitch of the conveying hole, and the diagonal length of the square formed by the tooth width and the tooth thickness of the tooth of the pulley is longer than the diameter of the conveying hole. When the tooth is inserted into the conveying hole, the tooth presses and expands the conveying hole, and the diagonal length of the square formed by the tooth width and the tooth thickness of the tooth for the auxiliary pulley is shorter than the diameter of the conveying hole. Positioning device of the carrier tape, characterized in that the. The method of claim 1, A V notch that can be reciprocated is installed outside the pulley, By positioning the V notch in a positioning groove provided at equal intervals around the positioning plate which is intermittently rotated at the same time as the pulley in combination with the pulley, carrying out the positioning when storing the work in the carrier tape. A carrier tape positioning device. The method according to claim 1 or 2, A groove tape positioning device, characterized in that a groove for discharging dust is formed in the tooth of the tooth.

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