CN108432360B

CN108432360B - Splicing device

Info

Publication number: CN108432360B
Application number: CN201580085196.1A
Authority: CN
Inventors: 迟晓东
Original assignee: Fuji Machine Manufacturing Co Ltd
Current assignee: Fuji Corp
Priority date: 2015-12-10
Filing date: 2015-12-10
Publication date: 2020-03-31
Anticipated expiration: 2035-12-10
Also published as: WO2017098629A1; CN108432360A; JPWO2017098629A1; JP6754373B2

Abstract

The splicing device (20) of the present invention is provided with: a first cutting blade (68a) that cuts off an unnecessary portion (Tf1) in the first carrier tape (T1) positioned at the first cutting position (Lc1) by the first positioning device (50); a second cutting blade (68b) for cutting off an unnecessary portion (Tf2) of the second carrier tape (T2) positioned at the second cutting position (Lc2) by the second positioning device (51); and a driving device (72) for driving the first cutting blade (68a) and the second cutting blade (68 b).

Description

Splicing device

Technical Field

The invention relates to a splicing device.

Background

In general, in an electronic component mounting machine, a tape reel on which a carrier tape containing a plurality of electronic components (hereinafter, simply referred to as "components") at fixed intervals is wound is loaded on a tape feeder, the carrier tape is fed by a predetermined amount each time by driving a sprocket engaged with a feed hole provided in the carrier tape, the components are sequentially supplied to a component supply position, and the components are sucked by a suction nozzle and mounted on a substrate.

In such an electronic component mounting machine, when the remaining amount of components stored in one reel is reduced, the start end portion of the carrier tape wound around the other reel, in which the same kind of components are stored, is connected to the end portion of the carrier tape having the reduced remaining amount by the splicing device.

For example, a splicing device described in patent document 1 includes: a first cutting device for cutting off the redundant part of the rear end part of the carrier tape of the first tape reel; a second cutting device for cutting off the redundant part of the front end part of the carrier tape of the second tape reel; and a splicing device for splicing the splicing tape across the rear end of the carrier tape of the first tape reel and the front end of the carrier tape of the second tape reel after cutting.

Documents of the prior art

Patent document

Patent document 1: international publication No. 2012/060514

Disclosure of Invention

Problems to be solved by the invention

Since the conventional splicing device includes the driving devices for the first cutting device and the second cutting device, the device is large in size, and the power consumption tends to be large, and the component cost tends to increase.

The invention aims to provide a splicing device which can be miniaturized, saves energy and has low cost.

Means for solving the problems

In order to achieve the above object, a splicing device according to the present invention includes: a first positioning device for conveying a first carrier tape containing components, positioning the first carrier tape at a first cutting position, and then positioning a cut end of the first carrier tape at a splicing position; and a second positioning device for conveying the second carrier tape containing the components in a direction close to the first carrier tape, positioning the second carrier tape at a second cutting position, and then positioning the cut end of the second carrier tape at the splicing position.

The splicing device further includes: a first cutting blade that cuts off an unnecessary portion of the first carrier tape positioned at the first cutting position by the first positioning device; a second cutting blade that cuts off an unnecessary portion of the second carrier tape positioned at a second cutting position by the second positioning device; a driving device for driving the first cutting knife and the second cutting knife; and a splicing device for splicing the splicing tapes across the cut end portions of the first carrier tape and the second carrier tape positioned at the splicing positions, respectively.

In this way, since the splicing device is configured to drive the first cutting blade and the second cutting blade by one driving device, the splicing device can be reduced in size and can suppress an increase in energy consumption and component cost, as compared with a configuration in which the first cutting blade and the second cutting blade are driven by two driving devices, respectively.

Drawings

Fig. 1 is a perspective view showing the entire splicing apparatus according to the embodiment of the present invention.

Fig. 2 is a view showing a closure holding device for closing and holding the lid body of the splicing device.

Fig. 3 is a view showing a tape feeder preferred for carrying out the present invention.

Fig. 4 is a view showing the carrier tape held by the tape feeder.

Fig. 5 is a sectional view taken along line 5-5 of fig. 4.

Fig. 6 is a diagram showing a state in which the splicing tape is attached to the base tape by the splicing tape supplying means.

Fig. 7 is a view showing a state where the cover of the splicing apparatus is opened.

Fig. 8 is a diagram showing a state in which the splicing tape supply member is attached to the splicing apparatus.

Fig. 9 is a view showing a state in which the apparatus main body and the cover of the splicing apparatus are removed and the inside is exposed.

Fig. 10 is a top view of the carrier tapes connected by the splicing device.

Fig. 11 is a perspective view showing a cutting device for cutting the carrier tape.

Fig. 12 is a diagram showing a cutting blade of the cutting device.

Fig. 13 is a view showing a film peeling member of a top film peeling apparatus for peeling a top film from a splicing tape supply member.

Fig. 14 is a diagram showing a splicing tape supply member conveying device that conveys a splicing tape supply member.

Fig. 15 is a perspective view showing a bonding device for bonding a splicing tape to a carrier tape.

Fig. 16 is a plan view showing the joining device.

Fig. 17 is a front view as viewed from the direction of arrow 17 in fig. 16.

Fig. 18 is a right side view as viewed from the arrow 18 direction of fig. 16.

Fig. 19 is a left side view as viewed from the direction of arrow 19 of fig. 16.

Fig. 20 is a view showing a schematic configuration of the splicing apparatus.

Fig. 21 is an operation state diagram of fig. 20 showing a positioning step of a cutting portion of the carrier tape.

Fig. 22 is an operation state diagram of fig. 20 showing a cutting step of a carrier tape cutting portion.

Fig. 23 is an operation state diagram of fig. 20 showing a positioning step of the carrier tape to the splicing position.

Fig. 24A is a diagram showing a cam of a driving device of the cutting device.

Fig. 24B is a diagram showing a state in which a cutting blade of the cutting device is lifted and lowered with respect to the rotation of the cam of fig. 24A.

Fig. 25 is a cross-sectional view showing the relationship between the carrier tape and the splicing tape at the splicing position.

Fig. 26A is a view showing a film peeling member of the top film peeling apparatus before peeling the top film from the splicing tape supply member.

Fig. 26B is a view showing a film peeling member of the top film peeling apparatus after peeling the top film from the splicing tape supply member.

Fig. 27A is a cross-sectional view taken along line 27-27 of fig. 25.

Fig. 27B is an operation state diagram of fig. 27A before the carrier tape is attached.

Fig. 27C is an operation state diagram of fig. 27A after the carrier tape is attached.

Fig. 28A is a diagram showing another form of the cam of the driving device of the cutting device.

Fig. 28B is a diagram showing a state in which a cutting blade of the cutting device is lifted and lowered with respect to rotation of the cam of fig. 28A in another mode.

Detailed Description

(1. schematic Structure of splicing apparatus)

Hereinafter, a schematic configuration of a splicing apparatus according to an embodiment of the present invention will be described with reference to the drawings. The details of the splicing device will be described later. As shown in fig. 1, the splicing device 20 includes: a box-shaped apparatus main body 21; a lid 22 supported by the apparatus main body 21 so as to be rotatable about a pivot shaft 23 (see fig. 2) and opening and closing an upper surface of the apparatus main body 21; and a closure holding device 24 (see fig. 2) for holding the lid body 22 in a closed state during the splicing operation. The splicing device 20 is mounted on a carriage or the like (not shown) and is movable between tape feeders 10 (see fig. 3) mounted on the electronic component mounting machine.

The splicing device 20 is a device for automatically connecting a terminal end portion of a carrier tape T (see fig. 4 and 5) wound on a current reel 12 (see fig. 3) mounted on the tape feeder 10 to a leading end portion of the carrier tape T wound on a next reel 12 to be replaced in the electronic component mounting machine.

That is, the splicing device 20 splices the carrier tape T of the present reel 12 and the carrier tape T of the next reel 12 inserted from both sides of the device main body 21 by the splicing tape supply part TT (see fig. 6) while butting them at the center of the device main body 21. The cover 22 is manually closed during splicing, and is automatically opened when the spliced carrier tape T is taken out.

As shown in fig. 2, the closure retention device 24 basically includes: a solenoid 25 provided in the apparatus main body 21 and configured to allow the operation rod 25a to be operated in the vertical direction; a hook 27 which is rotatably supported by the apparatus main body 21 about a support shaft 26 and is rotated by the solenoid 25; and an engagement pin 28 provided to the lid body 22 so as to protrude downward and engaged with the hook 27 so as to be capable of engaging and disengaging.

An opening spring 29 for biasing the cover 22 in an opening direction is provided between the apparatus main body 21 and the cover 22, and when the engagement of the hook 27 and the engagement pin 28 is released, the cover 22 is automatically opened by the opening spring 29. The opening spring 29 constitutes an opening operation device that operates the lid body 22 in the opening direction when the closing and holding device 24 is released.

Further, although not shown, a stopper is provided on the lid 22, and a closure confirmation sensor that operates by the stopper is provided on the apparatus main body 21. The closure confirmation sensor operates by a stopper when the lid 22 is closed, and confirms that the lid 22 is closed based on an activation signal of the closure confirmation sensor.

When the lid 22 is closed by the operator and the closure confirmation sensor is activated by the stopper, the operating lever 25a of the solenoid 25 is operated in the upward direction of fig. 2 based on the activation signal, and the hook 27 is rotated to be engaged with the engagement pin 28. Thereby, the lid 22 is held in the closed state by the closure holding device 24.

Further, when the two carrier tapes T1, T2 are connected to each other by the splicing tape 30 and a connection end signal is sent from the control device 59 (see fig. 1), the operating rod 25a of the solenoid 25 operates in the downward direction of fig. 2. Thereby, the hook 27 is rotated to release the engagement with the engagement pin 28, and the lid 22 is automatically opened by the urging force of the opening operation device (opening spring) 29.

(2. schematic structure of tape feeder)

As shown in fig. 3, a tape reel 12 on which a carrier tape T is wound is detachably mounted on the tape feeder 10. The tape feeder 10 incorporates a quantitative conveying mechanism 18, and the quantitative conveying mechanism 18 feeds the carrier tape T wound around the reel 12 by a fixed amount each time and supplies the components e (see fig. 4 and 5) one by one to a component supply position 17 provided at a tip end portion of the tape feeder 10. The quantitative conveying mechanism 18 includes: a sprocket 19 rotatably supported by the main body of the tape feeder 10 and engaged with a feed hole Hc (see fig. 4 and 5) of the carrier tape T; and a motor, not shown, for rotating the sprocket 19 by 1 pitch at a time.

(3. schematic Structure of Carrier tape)

As shown in fig. 4 and 5, the carrier tape T is formed to be elongated with a predetermined width, and a plurality of cavities Ct are arranged at regular pitch intervals Pc in the longitudinal direction, and the components e to be mounted on the substrate are respectively accommodated in the cavities Ct.

The upper opening of the cavity Ct is covered with a cover tape Tt attached to the surface of the carrier tape T. On one end side in the width direction of the carrier tape T, transfer holes Hc are formed at the same pitch interval Pc as the cavity Ct or at a pitch interval 2Pc 2 times the cavity Ct, and these transfer holes Hc and the cavity Ct are arranged in a fixed positional relationship.

The carrier tape T used in the electronic component mounter is composed of plural types having different pitch intervals of the cavities Ct, and the pitch interval of the cavities Ct and the relationship between the cavities Ct and the transfer holes Hc are determined according to the type of the carrier tape T. Therefore, by recognizing the pitch interval of the cavities Ct by image processing or the like, it is possible to grasp which carrier tape T is. Based on this, the positions of the carrier tape T feed holes Hc can be identified, and the cutting position of the carrier tape T at the time of splicing, which will be described later, can be determined.

(4. schematic structure of splicing tape supply part)

As shown in fig. 6, the splicing tape supply member TT is formed as a 3-layer structure of the splicing tape 30, the base tape 31, and the top film 32. The splicing tape 30 is composed of 1 set of surface-use and back-

use splicing tapes

30a, 30b bonded to both faces of the two carrier tapes T across the two carrier tapes T on the upper surface of the continuous base tape 31. That is, the splicing tapes 30 are 1 set of the front surface splicing tape 30a bonded to the front surfaces of the two carrier tapes T and the back surface splicing tape 30b bonded to the back surfaces of the two carrier tapes T.

The splicing tapes 30 for front and back surfaces 1 group are attached along the longitudinal direction of the base tape 31 so as to have a constant pitch interval Pd while maintaining a fixed positional relationship with the feed holes 31a formed by punching holes at constant pitch intervals on both sides of the base tape 31. In addition, the 1 set of splicing tapes 30 is disposed with the surface splicing tape 30a as a leading side and with a predetermined interval Pd 1.

A continuous top film 32 is bonded to the top surface of the splicing tape 30. Metal powder is embedded in the splicing tape 30, and the splicing device 20 detects the splicing tape 30 by a tape detection sensor, not shown, capable of detecting metal.

The adhesive force between the splicing tape 30 and the top film 32 and the base tape 31 bonded to both surfaces of the splicing tape 30 is strong relative to the adhesive force of the base tape 31, and even if the top film 32 is peeled off from the splicing tape 30, the splicing tape 30 is not peeled off from the base tape 31. However, when the carrier tape T is adhered to the adhesive surface of the splicing tape 30 after the top film 32 is peeled off, the adhesive force thereof is stronger than the adhesive force with respect to the base tape 31, and the base tape 31 is easily peeled off from the splicing tape 30.

The width direction dimension of base tape 31 is larger than the width direction dimension of top film 32, and both ends in the width direction of base tape 31 protrude from both ends in the width direction of top film 32. On the other hand, the width-directional dimension of the splicing tape 30 is equal to the width-directional dimension of the top film 32, and the splicing tape 30 is attached to the base tape 31 inside the feed hole 31 a. A plurality of positioning holes 31b are formed in the base tape 31 in the width direction of the base tape 31 at the same pitch interval as the feed holes Hc formed in the carrier tape T at positions close to the surface-use splicing tape 30 a.

In the back surface splicing tape 30b, a plurality of positioning holes 30b1 are formed in the width direction of the base tape 31 so as to penetrate the base tape 31 at the same pitch interval as the feed holes Hc formed in the carrier tape T. The feed hole 31a and the positioning hole 31b formed in the base tape 31 are formed by punching or the like after the splicing tape 30 is attached to a predetermined position of the base tape 31, and are matched with the positioning hole 30b1 formed in the back surface splicing tape 30 b.

(5. detailed construction of splicing apparatus)

As shown in fig. 7 and 8, the splicing device 20 includes a first tape conveying device 50, a second tape conveying device 51, a first element detecting device 52, a second element detecting device 53, a first cutting device 54, a second cutting device 55, a first acquiring device 56, a second acquiring device 57, a supply reel holding portion 38 (corresponding to a "holding portion" of the present invention), a top film peeling device 35, a splicing tape supply member conveying device 36, a joining device 58, a control device 59 (see fig. 1), and the like.

The first tape conveying device 50, the second tape conveying device 51, the first component detecting device 52, the second component detecting device 53, the first cutting device 54, the second cutting device 55, the first acquiring device 56, the second acquiring device 57, the splicing tape supply member conveying device 36, the joining device 58 (except for a part thereof), and the control device 59 are disposed so as to be housed inside the apparatus main body 21 and the cover 22. The supply reel holding portion 38 and the top film peeling device 35 (except for a part) are disposed outside the back surface of the apparatus main body 21.

That is, as shown in fig. 9, a first belt conveyor 50 and a second belt conveyor 51 are disposed in the apparatus main body 21 and on both sides in the cover 22, respectively, and a first cutting device 54 and a second cutting device 55 are disposed between the first belt conveyor 50 and the second belt conveyor 51, respectively. Further, a first acquiring device 56 and a second acquiring device 57 are disposed between the first cutting device 54 and the second cutting device 55, respectively, and a joining device 58 is disposed between the first acquiring device 56 and the second acquiring device 57.

The first component detection device 52 is disposed above the first detection position Ld1 of the first conveyance path 60a of the first belt conveyor 50, and the second component detection device 53 is disposed above the second detection position Ld2 of the second conveyance path 60b of the second belt conveyor 51. As shown in fig. 8, a supply reel holding unit 38, a top film peeling device 35, and a splicing tape supply member conveying device 36 are disposed on a line that passes through the splicing position LS. In the following description, the two carrier tapes T to be spliced are referred to as a first carrier tape T1 and a second carrier tape T2.

As shown in fig. 9, the first and

second belt conveyors

50 and 51 convey the first and second carrier tapes T1 and T2 along the first and

second conveyance paths

60a and 60b, and the first and second cutting positions Q1 and Q2 of the first and second carrier tapes T1 and T2 shown in fig. 10 are sequentially positioned at the first cutting position Lc1, the second cutting position Lc2, and the splicing position LS. That is, the first belt conveying device 50 and the second belt conveying device 51 function as a first positioning device and a second positioning device.

The first belt conveying device 50 and the second belt conveying device 51 include: a first conveyance path 60a and a second conveyance path 60b extending horizontally from both side surfaces of the apparatus main body 21 toward the center; and a first sprocket 61a and a second sprocket 61b disposed below the first conveying path 60a and the second conveying path 60 b.

The first and second

belt conveying devices

50 and 51 further include a first stepping motor 62a and a second stepping motor 62b connected to the first and

second sprockets

61a and 61b, a first sprocket detection device 63a and a second sprocket detection device 63b disposed in the vicinity of the first and

second sprockets

61a and 61b, and a first belt detection device 64a and a second belt detection device 64b disposed above the first and

second conveyance paths

60a and 60 b.

The first and

second conveyance paths

60a and 60b have a width slightly larger than the width of the first and second carrier tapes T1 and T2 shown in fig. 10, and are formed in a groove shape extending in a straight line from the first and

second tape inlets

84a and 84b provided on both side surfaces of the apparatus main body 21 to the first and second cutting positions Lc1 and Lc2 of the first and second carrier tapes T1 and T2 by the first and

second cutting blades

68a and 68b of the first and

second cutting devices

54 and 55.

The first sprocket 61a and the second sprocket 61b are formed with a plurality of first teeth 67a and second teeth 67b in the circumferential direction, the pitch of which is the same as the pitch Ph of the first carrier tape T1 and the first carrier tape T2 perforated first carrier holes Hc1 and the second carrier holes Hc2 shown in fig. 10. The first and

second sprockets

61a, 61b are disposed below the first and

second conveyance paths

60a, 60b so as to mesh with the first and second feed holes Hc1, Hc2 of the first and second carrier tapes T1, T2 inserted along the first and

second conveyance paths

60a, 60 b.

The first and second

sprocket detecting devices

63a and 63b read the first and second marks M1 and M2 marked on the side surfaces of the first and

second sprockets

61a and 61b, and thereby detect that the first and

second sprockets

61a and 61b are at the home positions.

The first and

second tape detectors

64a and 64b detect that the first and second carrier tapes T1 and T2 are inserted from the first and

second tape inlets

84a and 84b provided on both side surfaces of the apparatus main body 21.

The first and second

component detection devices

52 and 53 detect the tape section between the first and second cavities Ct1 and Ct2 and Ct1 and Ct2 of the first carrier tape T1, the second cavity Ct2 and Ct1 and the first and second cavities Ct 5636 and e1 and e2 in the second cavity Ct2 shown in fig. 10 and carried on the first and

second carrying lines

60a and 60 b.

The first cutting device 54 and the second cutting device 55 cut the first excess portion Tf1 and the second excess portion Tf2 at the first cutting position Q1 and the second cutting position Q2 of the first carrier tape T1 and the second carrier tape T2 shown in fig. 10. As the first cleavage site Q1 (second cleavage site Q2), for example, an intermediate position between the first cavity Ct1 (second cavity Ct2) having the first element e1 (second element e2) and the empty first cavity Ct1 (second cavity Ct2) having no first element e1 (second element e2) is selected.

As shown in fig. 11, the first cutting device 54 and the second cutting device 55 include a first cutting blade unit 71a and a second cutting blade unit 71b, and a single driving device 72 that drives the first cutting blade unit 71a and the second cutting blade unit 71 b. Since the first cutting device 54 and the second cutting device 55 are configured to drive the first cutting blade unit 71a and the second cutting blade unit 71b by one driving device 72, they can be made smaller and the energy consumption and the increase in component cost can be suppressed, as compared with a configuration in which the first cutting blade unit 71a and the second cutting blade unit 71b are driven by two driving devices, respectively.

The first and second

cutting blade units

71a, 71b include first and

second cutting blades

68a, 68b provided at first and second cutting positions Lc1, Lc2, first and

second holding members

69a, 69b for holding the first and

second cutting blades

68a, 68b, and first and

second support members

70a, 70b for supporting the first and

second holding members

69a, 69 b.

As shown in fig. 12, the first cutting blade 68a and the second cutting blade 68b are cutting blades formed in the same shape. Thus, the cost of replacing the first cutting blade 68a and the second cutting blade 68b due to the wear of the cutting edges 68aa and 68ba of the first cutting blade 68a and the second cutting blade 68b is reduced as compared with the case where the first cutting blade 68a and the second cutting blade 68b are formed in a bilaterally symmetrical shape.

The cutting edges 68aa and 68ba of the first cutting blade 68a and the second cutting blade 68b are formed in shapes inclined downward from the left end to the right end in fig. 12 with respect to the horizontal direction. Accordingly, resistance to cutting by the first and

second cutting blades

68a, 68b is reduced, and therefore the first and second carrier tapes T1, T2 can be easily cut.

As shown in fig. 11, the first holding member 69a and the second holding member 69b are formed in a quadrangular prism shape, and the first cutting blade 68a and the second cutting blade 68b are held such that the cutting edges 68aa and 68ba of the first cutting blade 68a and the second cutting blade 68b protrude downward from the lower surface. The first holding member 69a and the second holding member 69b are supported by the first supporting member 70a and the second supporting member 70b such that both side surfaces thereof are slidable in the vertical direction and upper surfaces thereof are in slidable contact with a first cam 701a and a second cam 701b, which will be described later. The upper ends of a pair of first and second

pressing springs

73a, 73b are attached to the lower surfaces of the first and

second holding members

69a, 69b, and the lower ends of the pair of first and second

pressing springs

73a, 73b are attached to the outer sides of the first and

second conveyance paths

60a, 60b, respectively.

The first support member 70a and the second support member 70b are formed in arm shapes, and are rotatably supported by shaft holes 70ha and 70hb provided at one end portions thereof, into which rotation shafts for opening and closing the lid body 22 are fitted. The first support member 70a and the second support member 70b are coupled by the coupling member 70 at a predetermined interval.

The coupling member 70 is fixed to the lid 22, and the first support member 70a and the second support member 70b rotate about the shaft holes 70ha and 70hb with the lid 22 opened and closed. The first and

second support members

70a, 70b slidably support the first and

second holding members

69a, 69b in grooves 70da, 70db provided in the other end portions and extending vertically.

The first and

second holding members

69a, 69b and the first and

second support members

70a, 70b are formed of members having a shape symmetrical with respect to a plane perpendicular to the conveying direction of the first and second carrier tapes T1, T2 and passing through the splicing position LS. This makes it possible to compactly configure the first holding member 69a, the second holding member 69b, and the first support member 70a, the second support member 70 b.

The driving device 72 includes: first and

second cams

701a and 701b that can be brought into sliding contact with the first and

second holding members

69a and 69 b; a gear motor 702 connected to the first cam 701a and the second cam 701 b; a stopper 703 (corresponding to "detection means" of the present invention) that is rotatable together with the rotation of the first cam 701a and the second cam 701 b; and a stopper detection device 704 (corresponding to "detection device" of the present invention) for detecting the rotation state of the stopper 703.

The first cam 701a and the second cam 701b are formed in a disc shape, and are eccentrically fitted to both ends of the camshaft 705. The camshaft 705 is rotatably supported by the

camshaft support members

706a and 706b such that peripheral edges of the first and

second cams

701a and 701b are in slidable contact with upper surfaces of the first and

second holding members

69a and 69b, and the

camshaft support members

706a and 706b are fixed to the first and

second support members

70a and 70 b.

As will be described in detail later, in the first cam 701a and the second cam 701b, the first cutting blade 68a and the second cutting blade 68b are positioned at the top dead center when the distance between the horizontal plane passing through the eccentric center CC and the peripheral point in contact with the top surfaces of the first holding member 69a and the second holding member 69b is shortest, and the first cutting blade 68a and the second cutting blade 68b are positioned at the bottom dead center when the distance between the horizontal plane passing through the eccentric center CC and the peripheral point in contact with the top surfaces of the first holding member 69a and the second holding member 69b is longest.

The second cam 701b is fitted to the camshaft 705 so as to be shifted by a predetermined angle, for example, 30 degrees in phase with respect to the first cam 701 a. Thus, the timing at which the first cutting blade 68a receives the maximum cutting resistance to cut the first carrier tape T1 can be shifted from the timing at which the second cutting blade 68b receives the maximum cutting resistance to cut the second carrier tape T2, and therefore the rotational force of the camshaft 705 can be reduced, and the small-output gear motor 702 can be used. However, when the output of the gear motor 702 is excessive, the first cam 701a and the second cam 701b may be fitted to the cam shaft 705 in phase.

The gear motor 702 is a general-purpose motor that rotates the first cam 701a and the second cam 701b, and is fixed to a motor support member 707 fixed to the lid 22. Further, a gear 708 which is fitted to the motor shaft of the gear motor 702 so as to be rotatable together therewith meshes with a gear 709 which is fitted to the camshaft 705 so as to be rotatable together therewith. Thereby, the driving force of the gear motor 702 is transmitted to the camshaft 705 via the

gears

708 and 709, and the first cam 701a and the second cam 701b are rotated.

The stopper 703 is formed in a disk shape, and is fitted to the camshaft 705 so as to be rotatable together with the camshaft 705. The stopper detection device 704 is fixed to the cover 22 so as to sandwich both side surfaces of the stopper 703 with a gap. The stopper detection device 704 detects the origin mark m marked on the side surface of the stopper 703 by, for example, reflecting light. The origin mark m is set to indicate that the first cutting blade 68a is positioned at the top dead center, for example, when the origin mark m is detected by the stopper detection device 704. This makes it possible to cut the first and second carrier tapes T1 and T2 with high accuracy.

The first and second acquiring

devices

56 and 57 acquire the first and second excess portions Tf1 and Tf2 of the first and second carrier tapes T1 and T2, respectively, which are cut off. That is, the first carrier tape T1 (second carrier tape T2) connected to the cut empty first cavity Ct1 (second cavity Ct2) is taken as the first excess portion Tf1 (second excess portion Tf2) by the first and

second taking devices

56 and 57 and discarded.

As shown in fig. 9, the first and second acquiring

devices

56 and 57 include a first acquiring member 75a and a second acquiring member 75b that are provided between the first cutting position Lc1 and the second cutting position Lc2 and the splicing position LS and are rotatably supported by the first and

second fixing members

78a and 78b, and a first acquiring member rotating device 76a and a second acquiring member rotating device 76b that rotate the first and second acquiring

members

75a and 75 b.

The first and second acquiring

members

75a and 75b are formed with first and

second openings

80a and 80b for acquiring the first and second carrier tapes T1 and Tf1 and Tf2 of the second carrier tape T2 transported on the first and

second transport lines

60a and 60b, and first and

second ducts

82a and 82b for guiding the first and second excess portions Tf1 and Tf2 to the disposal positions not shown.

The first and

second acquisition units

75a and 75b are held at home positions indicated by the one-dot chain lines in fig. 20 when acquiring the first and second unnecessary portions Tf1 and Tf 2. When the first and second carrier tapes T1 and T2 are conveyed to the splicing position LS, the first and second acquiring

members

75a and 75b are rotated by a predetermined angle by the first and second acquiring

member rotating devices

76a and 76b, and the first and second

movable conveyance paths

79a and 79b formed on the first and second acquiring

members

75a and 75b are aligned with the first and

second conveyance paths

60a and 60b, as shown by the solid lines in fig. 20.

As shown in fig. 8, the supply reel holding portion 38 is attached to the apparatus main body 21, and rotatably supports the supply reel 33 on which the splicing tape supply member TT is wound in a roll shape. The feeding reel holding portion 38 is pressed against the feeding reel 33 by a predetermined frictional force based on the elastic force, and the rotation of the feeding reel 33 with respect to the feeding reel holding portion 38 is regulated by the feeding reel holding portion 38. Also, when the base tape 31 is pulled by a force against the frictional force, the supply reel 33 can rotate with respect to the supply reel holding portion 38.

The top film peeling apparatus 35 includes a film peeling member 351 and a top film conveying apparatus 352. As shown in fig. 13, the film peeling member 351 is formed in a plate shape and is disposed in front of the splicing position LS in the conveying direction of the splicing tape supply member TT.

That is, the film peeling member 351 is arranged so that when the top film 32 is peeled from the base tape 31 and the peeled top film 32 is brought into contact with the front end 351a (end on the right side in the figure) of the film peeling member 351, only 1 set of the splicing tapes 30 positioned at the splicing position LS is exposed.

A roller 351b for guiding the top film 32 to the rear side of the film peeling member 351 while spanning the peeled top film 32 is provided at the rear end of the film peeling member 351. That is, the top film 32 that has been peeled contacts the front end 351a of the film peeling member 351, is folded back in the direction opposite to the conveying direction of the splicing tape supply member TT, and is sent out by the top film conveying device 352 via the rollers 351 b.

As shown in fig. 8, the top film conveying device 352 includes a roller 352a that grips and feeds out the top film 32, and a motor 352b that rotates the roller 352a, and the top film conveying device 352 is disposed below the supply reel 33. The top film conveying device 352 feeds out the top film 32 folded back in the direction opposite to the conveying direction of the splicing tape supply member TT by the operator, and peels the top film 32 from the base tape 31 at the end of the film peeling member 351.

As shown in fig. 14, the splicing tape supply member transport device 36 includes a transport sprocket 46 and a stepping motor 47, and feeds out the base tape 31 from which the splicing tape 30 is peeled. That is, the conveying sprocket 46 has a plurality of engaging teeth 46a formed at equal angular intervals in the circumferential direction at the same pitch as the pitch of the conveying holes 31a formed by punching the base tape 31.

The base tape 31 from which the top film 32 is peeled, that is, the base tape 31 to which the plurality of splicing tapes 30 are attached with the adhesive surface facing upward passes through the joining device 58 so as to cross the center of the splicing position LS, and the feed holes 31a of the base tape 31 are engaged with the engagement teeth 46a of the feed sprocket 46.

The stepping motor 47 is connected to the conveyance sprocket 46, and drives the conveyance sprocket at 1 pitch to feed the base tape 31 engaged with the engagement teeth 46a by a unit amount. The stepping motor 47 is positioned so that the origin is returned by turning on the power supply and the engaging teeth 46a of the conveying sprocket 46 are always positioned at the apex.

The stepping motor 47 can be appropriately restricted in rotation by a rotation restriction unit 47a such as a servo lock device or by applying excitation, for example. The friction action of the supply reel holder 38 and the rotation restricting means 47a constitute a stopper for restricting the movement of both end sides of the base tape 31 and preventing the base tape 31 from being lifted when the spliced first and second carrier tapes T1 and T2 are taken out from the splicing device 20.

As shown in fig. 9, the engagement means 58 is provided between the first cutting means 54 and the second cutting means 55. The splicing device 58 includes a tape detection sensor that detects the

splicing tapes

30a and 30b provided at positions separated by a predetermined distance from the splicing position LS, on the front side of the splicing position LS that is below the base tape 31 fed from the supply reel 33.

The splicing device 58 connects the first carrier tape T1 and the second carrier tape T2 fed from the left and right sides of the device main body 21 and butted against the first cutting portion Q1 and the second cutting portion Q2, at a splicing position LS between the first carrying path 60a and the second carrying path 60b, by a splicing tape 30 fed from an upper direction orthogonal to the first carrier tape T1 and the second carrier tape T2 and positioned based on a detection signal of a tape detection sensor.

Specifically, as shown in fig. 15 to 19, the joining device 58 includes a first elevation table 91, a pressing plate 97, a second elevation table 101, a turn table 103, and the like. The leg portion 92 of the first elevating table 91 is supported to be able to ascend and descend by the apparatus main body 21. Two first positioning pins 93 and 94, which can engage with the positioning holes 30b1 formed in the splicing tape 30b, the first carrier tape T1, and the respective conveying holes Hc of the second carrier tape T2, are provided on the first lifter base 91 so as to protrude in the conveying direction of the first carrier tape T1 and the second carrier tape T2 on both sides with the joining position (butting position) of the first carrier tape T1 and the second carrier tape T2 as the center.

Each pitch of the two sets of first positioning pins 93, 94 is determined to be 2 times the pitch Ph of the transfer holes Hc of the first and second carrier tapes T1, T2. In the first lifter 91, pin holes 95 are formed between the first positioning pins 93 and 94, and second positioning pins 105 on the turntable 103 side, which will be described later, can be inserted into these pin holes 95.

The movable table 96 is guided and supported by the apparatus main body 21 so as to be movable in a horizontal direction orthogonal to the longitudinal direction of the first and second carrier tapes T1, T2, and a pressing plate 97 is attached to the movable table 96 at a position above the first positioning pins 93, 94. A U-shaped groove 98 capable of accommodating the first positioning pins 93 and 94 is formed at the front end of the pressing plate 97, and the pressing plate 97 is capable of moving forward and backward between a backward end at which the groove 98 is disengaged from the first positioning pins 93 and 94 and an forward end position at which the groove 98 accommodates the first positioning pins 93 and 94.

The leg portion 102 of the second elevating table 101 is supported by the apparatus main body 21 so as to be able to ascend and descend. The turn table 103 is supported at both ends by the second elevating table 101 so as to be able to turn 180 degrees around a pivot 104 parallel to the longitudinal direction of the first carrier tape T1 and the second carrier tape T2.

A pressing plate 103a is provided on the rotary table 103 at a position offset from the center of rotation, and a plurality of second positioning pins 105 and pin holes 106 are provided on the pressing plate 103 a. The second positioning pins 105 are arranged at positions corresponding to positions between the first positioning pins 93 and 94 provided on the first elevation table 91, and can protrude into the pin holes 95 provided on the first elevation table 91.

The pin holes 106 are arranged at positions corresponding to the positions between the second positioning pins 105, and the first positioning pins 93 and 94 provided on the first elevating table 91 can be inserted. The second positioning pins 105 engage with the feed holes Hc of the first carrier tape T1 and the second carrier tape T2 positioned at the splicing position LS and the positioning holes 30b1 of the splicing tape 30b by 180-degree rotation of the turntable 103, and maintain the positional relationship among the first carrier tape T1, the second carrier tape T2, and the splicing tape 30 connecting the two tapes fixed.

A pinion 107 is attached to the pivot 104 of the turntable 103, and a rack 108 meshing with the pinion 107 is attached to a movable table 109 that is movable in a horizontal direction orthogonal to the conveying direction of the first and second carrier tapes T1, T2. Thus, when the movable table 109 moves, the rotary table 103 rotates by a rack-and-pinion mechanism including the pinion gear 107 and the rack 108. By the rotation of the turntable 103, the three first carrier tape T1, the second carrier tape T2, and the splicing tape 30 are sandwiched between the pressing plate 103a and the first elevation table 91 and connected to each other.

The cam drum 110 is supported by the apparatus main body 21 so as to be rotatable about an axis parallel to the rotation center of the rotary table 103, and is rotated at a low speed in a constant direction by a drive motor, not shown. On both surfaces of the barrel cam 110, two

cam grooves

110a, 110b, 110c, and 110d are formed annularly inside and outside in the circumferential direction.

A first driven roller, not shown, pivotally supported by the leg portion 92 of the first raising/lowering table 91 is engaged with the first cam groove 110 a. A second driven roller, not shown, pivotally supported by the movable table 96 coupled to the pressing plate 97 is engaged with the second cam groove 110 b. A third driven roller, not shown, pivotally supported by the leg portion 102 of the second raising/lowering table 101 is engaged with the third cam groove 110 c. A fourth driven roller, not shown, pivotally supported by a coupling member coupled to the movable table 109 is engaged with the fourth cam groove 110 d.

Thus, when the barrel cam 110 rotates, the respective up-and-down movements of the first and second elevating tables 91 and 101, the forward-and-backward movement of the pressing plate 97, and the rotation of the rotation table 103 are performed in conjunction via the first, second, third, and fourth driven rollers engaged with the first, second, third, and

fourth cam grooves

110a, 110b, 110c, and 110d, respectively, and the first and second elevating tables 91 and 101, the pressing plate 97, and the rotation table 103 are returned to the original positions by 1 rotation of the barrel cam 110.

(6. operation of splicing device)

Next, the operation of the splicing device 20 in the above embodiment will be described. When the remaining amount of the components e held by the first carrier tape T1 wound on the tape reel 12 mounted on the tape feeder 10 is reduced, the splicing process is performed in which the leading end portion of the second carrier tape T2 wound on another tape reel, which contains the same kind of components e, is connected to the leading end portion of the first carrier tape T1 by the splicing tape 30. By supplying components by this splicing, the supply of components from the tape feeder 10 can be continued.

In this splicing, a check is usually performed to check whether or not a carrier tape containing a correct component is connected, that is, a splice check. The splicing verification is performed by reading the barcode attached to the old reel by a barcode reader and transmitting the serial ID of the component accommodated in the old reel to a management computer. Then, the barcode attached to the new reel is read by the barcode reader, and the serial ID of the component accommodated in the new reel is transmitted to the management computer.

Since the data relating to the components is stored in the database of the management computer for each serial ID, it is possible to compare whether or not the components accommodated in the two carrier tapes T1 and T2 are of the same type based on the read serial IDs. If the element is an error, the error is displayed on the operation panel and reported to the operator, and the operator corrects the splice based on the report.

When such splice verification is completed, the ends of the first carrier tape T1 and the second carrier tape T2 are cut by scissors. At this time, since an empty cavity portion having no component housed therein is generally provided at an end of each of the carrier tapes T1 and T2 in the order of several tens of mm, the portion is cut by an operator. In this case, as will be apparent from the following description, the cut surfaces do not serve as butting surfaces for the first carrier tape T1 and the second carrier tape T2, and therefore, accuracy is not particularly required.

Normally, when the cover 22 of the splicing device 20 is closed and the power is turned on by the operator in this state, the control device 59 returns the stepping

motors

62a and 62b to the original positions based on the detection signals from the first sprocket detection device 63a and the second sprocket detection device 63 b. As shown in fig. 20, the controller 59 positions the first cutting blade 68a at the top dead center based on the detection signal from the stopper detector 704.

In this state, the control device 59 detects whether or not the leading end portions of the first and second carrier tapes T1 and T2 are inserted from the first and second tape entrances 84a and 84b based on the detection signals from the first and second

tape detection devices

64a and 64 b. When it is detected that the leading end portions of the first and second carrier tapes T1, T2 have been inserted, the stepping

motors

62a, 62b are activated, the first and

second sprockets

61a, 61b are rotated, and the movable members 77a, 77b of the first and

second taking members

75a, 75b are moved in the upward direction.

Next, the control device 59 detects the first-order cavities Ct1 and Ct2 and the second-order cavities Ct1 and Ct2 of the first carrier tape T1 and the second carrier tape T2, in which the components e1 and e2 are not present, in order based on the detection signals from the first detection device 64a and the second detection device 64b, and calculates the pitch Pc between the cavities Ct1 and Ct2 based on the detection of the first-order and second-order cavities Ct1 and Ct 2.

Next, as shown in fig. 21, the controller 59 calculates the cut portions Q1 and Q2 of the first carrier tape T1 and the second carrier tape T2 based on the pitch Pc between the cavities Ct1 and Ct2 and the known distances D1 and D2 between the detection positions Ld1 and Ld2 and the cut positions Lc1 and Lc 2. Then, the first carrier tape T1 and the second carrier tape T2 are moved by distances D1 and D2 to obtain excess portions Tf1 and Tf2 in the first acquisition member 75a and the second acquisition member 75b, and the cutting positions Q1 and Q2 are conveyed and positioned at the cutting positions Lc1 and Lc 2.

When the conveyance positioning of the first and second carrier tapes T1 and T2 is completed, the controller 59 lowers the first and

second cutting blades

68a and 68b, respectively, to cut the first and second cutting portions Q1 and Q2 of the first and second carrier tapes T1 and T2, respectively, as shown in fig. 22.

That is, as shown in fig. 24A and 24B, when the rotation angle of the camshaft 705 is 0 degrees before the start of cutting, the cam peripheral edge point a of the first cam 701a contacts the upper surface of the first holding member 69a, and the cam peripheral edge point D of the second cam 701B contacts the upper surface of the second holding member 69B. Accordingly, the height of the lower end of the first cutting blade 68a is at the height hmax of the top dead center, and the height of the lower end of the second cutting blade 68b is at the height ho lower than the height hmax of the top dead center.

Then, the first cutting blade 68a starts to descend by the rotation of the first cam 701a, and when the first cutting blade 68a reaches the height hc at which the rotation angle of the cam shaft 705 is θ degrees (< 180 degrees) (the cam peripheral edge point B of the first cam 701a contacts the upper surface of the first holding member 69 a), the cutting of the first cut portion Q1 of the first carrier tape T1 is started.

When the first cutting blade 68a reaches the height hmin of the bottom dead center where the rotation angle of the camshaft 705 is 180 degrees (the cam peripheral edge point C of the first cam 701a contacts the top surface of the first holding member 69 a), the first carrier tape T1 is cut at the first cut portion Q1, and the first cutting blade 68a stops rising when the rotation angle of the camshaft 705 reaches the height hmax of the top dead center where the rotation angle of the camshaft 705 is 360 degrees (the cam peripheral edge point a of the first cam 701a contacts the top surface of the first holding member 69 a). The stop of the rise of the first cutting blade 68a is performed by detecting the origin mark m of the stopper 703 by the stopper detection device 704.

On the other hand, the second cutting blade 68b descends after temporarily reaching the height hmax of the top dead center at which the rotation angle of the camshaft 705 is 30 degrees (the cam peripheral edge point E of the second cam 701b contacts the upper surface of the second holding member 69 b) by the rotation of the second cam 701b rotating simultaneously with the first cam 701a, and starts cutting of the second cut portion Q2 of the second carrier tape T2 when the rotation angle of the second cutting blade 68b reaches the height hc at which the rotation angle of the camshaft 705 is θ +30 degrees (the cam peripheral edge point F of the second cam 701b contacts the upper surface of the second holding member 69 b).

The second cutting blade 68b finishes cutting the second cut portion Q2 of the second carrier tape T2 and turns to rise when the rotation angle of the camshaft 705 reaches the height hmin of the bottom dead center at which the cam peripheral edge point G of the second cam 701b contacts the upper surface of the second holding member 69b is 210 degrees, and stops rising when the rotation angle of the camshaft 705 reaches the height ho at which the rotation angle of the second cutting blade 68b reaches 360 degrees (the cam peripheral edge point D of the second cam 701b contacts the upper surface of the second holding member 69 b), that is, simultaneously with the stop of rising of the first cutting blade 68 a. The cut excess portions Tf1 and Tf2 of the first carrier tape T1 and the second carrier tape T2 are guided to the

ducts

82a and 82b of the pick-up

units

75a and 75b and discarded.

When the first and second carrier tapes T1, T2 are cut by the

cutting blades

68a, 68b, the control device 59 moves the take-up

members

75a, 75b downward as shown in fig. 23. Then, the

sprockets

61a and 61b are rotated by the stepping

motors

62a and 62b, respectively, to move the first carrier tape T1 and the second carrier tape T2 by the known distances D3 and D4 between the cutting positions Lc1 and Lc2 and the splicing position LS, respectively, and to convey and position the cutting positions Q1 and Q2 of the first carrier tape T1 and the second carrier tape T2 at the splicing position LS.

Thus, the feed holes Hc1 and Hc2 of the first and second carrier tapes T1 and T2 are positioned at positions where the first positioning pins 93 and 94 of the splicing device 58 provided at the splicing position LS can be engaged with each other. On the other hand, the splicing tape supply member TT wound around the supply reel 33 is fed from the supply reel 33 by the stepping motor 47 of the splicing tape supply member conveying device 36, and the splicing tape 30 of 1 set for the front surface and the back surface is conveyed to the splicing position LS.

The splicing tape 30b for the back surface is temporarily conveyed to the position detected by the tape detection sensor 48, and further conveyed from the position by a predetermined distance, so that the splicing tapes 30 for the front surface and the splicing tapes 30 for the back surface are sent to the splicing position LS in 1 set. As shown in fig. 25, the positioning hole 30b1 formed in the back surface splicing tape 30b is positioned at a position where it can be engaged with the first positioning pins 93, 94 of the joining device 58 provided at the splicing position LS.

As shown in fig. 26A and 26B, the top film 32 is folded back and peeled in a direction opposite to the feeding direction of the splicing tape supply member TT by the top film conveyor 35, and then abuts against the front end portion 351a of the film peeling member 351.

The top film conveying device 352 feeds out the top film 32 by a distance until the top film 32 comes into contact with the front end 351a of the film peeling member 351, and then stops the feeding. According to this configuration, the top film 32 is not peeled off after being brought into contact with the plate-like end portion of the film peeling member 351, and is positioned so that only 1 set of the splicing tape 30 is exposed at the splicing position LS.

In addition, since only 1 set of the splicing tapes 30 of the plurality of sets of splicing tapes 30 is exposed by peeling the top film 32 at the splicing position LS, the decrease in the adhesiveness of the splicing tapes 30 other than the 1 set can be suppressed. Further, since the peeling length of the top film 32 is short, the base tape 31 is not pulled by a strong force at the time of the peeling, and the lowering of the positioning accuracy of the splicing tape 30 at the splicing position LS can be suppressed.

When the first carrier tape T1, the second carrier tape T2, and the splicing tapes 30 are positioned at the splicing position LS, respectively, the stepping motor 47 of the splicing tape supply part conveyance device 36 is energized. That is, the splicing tape supplying member transporting device 36 positions the splicing tape 30 at the splicing position LS and sets the splicing tape in a stationary state.

Further, since the supply reel holding unit 38 holds the supply reel 33 so as to apply a frictional force in a direction opposite to the rotational direction, the splicing tape 30 can be joined to the first carrier tape T1 and the second carrier tape T2 with higher accuracy in cooperation with the splicing tape supply member conveying device 36 which is in the stationary holding state.

The barrel cam 110 is rotated by a drive motor, not shown. By the rotation of the barrel cam 110, first, the first raising/lowering table 91 is raised via the first driven roller engaged with the first cam groove 110 a. The first positioning pins 93 and 94 engage with the positioning holes 30b1 of the back-face splicing tape 30b and the feed holes Hc of the first carrier tape T1 and the second carrier tape T2, respectively, by the elevation of the first elevation table 91.

At this time, as shown in fig. 27A, the pressing plate 97 is sandwiched between the back surface splicing tape 30b and the first and second carrier tapes T1 and T2, and therefore the first and second carrier tapes T1 and T2 are not adhered to the back surface splicing tape 30 b. Thereby, the positional relationship among the first carrier tape T1, the second carrier tape T2, and the back surface splicing tape 30b bonded to the back surfaces of the two is maintained in a fixed relationship.

Next, the movable table 96 is moved in the horizontal direction by the second driven rollers engaged with the second cam grooves 110b, and the pressing plate 97 interposed between the back surface splicing tape 30b and the first and second carrier tapes T1 and T2 is retracted relative to the first elevation table 91, so that the back surface splicing tape 30b is brought into a bondable state with the first and second carrier tapes T1 and T2.

Next, the movable table 109 is horizontally moved via the third driven roller engaged with the third cam groove 110c, and the rotary table 103 is rotated clockwise in fig. 19 by the rack-and-pinion mechanism (107, 108) by the horizontal movement of the movable table 109. By the rotation of the turntable 103, as shown in fig. 27B, the base tape 31 engaged with the second positioning pins 105 is bent, and the surface splicing tape 30a is reversed so that the adhesive surface faces downward at a position above the first carrier tape T1 and the second carrier tape T2.

That is, the base tape 31 is folded so as to sandwich the first carrier tape T1 and the second carrier tape T2, the back surface splicing tape 30b is positioned on the back surface side of the first carrier tape T1 and the second carrier tape T2, and the front surface splicing tape 30a is positioned on the front surface side of the first carrier tape T1 and the second carrier tape T2. At this time, the motor of the splicing tape supply member conveying device 36 is reversed to loosen the base tape 31, and the base tape 31 is allowed to be bent.

Next, the second raising/lowering table 101 is lowered via the fourth driven roller engaged with the fourth cam groove 110 d. When the second lift table 101 is lowered, as shown in fig. 27C, the second positioning pins 105 engage with the positioning holes 31b of the base tape 31, the feed holes Hc of the first and second carrier tapes T1, T2, and the positioning holes 30b1 of the back surface splicing tape 30b from the back side of the base tape 31.

Further, by the lowering of the second elevation table 101, the folded base tape 31 is pressed between the pressing plate 103a of the rotary table 103 and the first elevation table 91 in a state where the first carrier tape T1 and the second carrier tape T2 are sandwiched. By this pressing, the back surface-use splicing tape 30b attached to the base tape 31 is bonded so as to straddle the back surfaces of the first carrier tape T1 and the second carrier tape T2, the front surface-use splicing tape 30a is bonded so as to straddle the cover tapes Tt attached to the surfaces of the first carrier tape T1 and the second carrier tape T2, and the leading end portion of the first carrier tape T1 and the leading end portion of the second carrier tape T2 are connected to each other. This pressing state continues for a certain time (several seconds).

Since the splicing tape 30 is connected to the first and second carrier tapes T1 and T2 in a state where the relative displacement of the first and second carrier tapes T1 and T2 from the splicing tape 30 is restricted by the first and second positioning pins 93 and 94 and the second positioning pin 105, the first and second carrier tapes T1 and T2 can be joined accurately without causing pitch deviation.

The splicing tape 30 is engaged with the first carrier tape T1 and the second carrier tape T2 by rotating the cam drum 110 by substantially 180 degrees, and the components are returned to the original positions by the remaining 180 degrees of rotation in the reverse operation to that described above. That is, first, the second lifter 101 is raised, the turntable 103 is raised with respect to the first lifter 91, the pressing of the folded base tape 31 is released, and the second positioning pins 105 are disengaged from the positioning holes 30b1 of the back surface splicing tape 30b and the respective feed holes Hc of the first carrier tape T1 and the second carrier tape T2.

Next, the turn table 103 turns counterclockwise in fig. 18 via the rack and pinion mechanisms (108, 107), and the motor of the splicing tape supply member conveying device 36 rotates forward, thereby removing slack in the base tape 31. Thereafter, the pressing plate 97 advances, and the first lift table 91 descends, so that the first positioning pins 93 and 94 are disengaged from the positioning holes 30b1 of the back-surface splicing tape 30b and the feed holes Hc of the first carrier tape T1 and the second carrier tape T2.

On the other hand, in the top film conveying device 35, the motor is driven to apply tension to the top film 32, and the top film 32 is peeled by a necessary amount. Thus, the joining of the tail end portion of the first carrier tape T1 and the start end portion of the second carrier tape T2 is ended.

Thus, when the first carrier tape T1 and the second carrier tape T2 are connected to each other by the splicing tape 30, a connection end signal is sent from the control device 59. Based on the connection completion signal, the solenoid 25 of the splicing device 20 is operated, the operating rod 25a moves downward, and the hook 27 rotates clockwise in fig. 2 about the support shaft 26.

Thereby, the engagement between the hook 27 and the engagement pin 28 is released, and the lid 22 is automatically opened by being rotated about the pivot shaft 23 by the biasing force of the spring 29. Thereafter, the tape feeder 10 is set with the tape reel 12 on which the second carrier tape T2 is wound, and the splicing process is ended. This allows components to be supplied to the tape feeder 10, and the electronic component mounting machine can continue the component mounting operation without stopping the machine.

(7. other forms of cutting device)

In the above embodiment, the first cam 701a and the second cam 701B of the first cutting device 54 and the second cutting device 55 are formed in a disk shape, but may be formed in a substantially elliptical disk shape as in the first cam 711a and the second cam 711B of other embodiments shown in fig. 28A and 28B. That is, the first cam 711a and the second cam 711b are formed so that the first cutting blade 68a and the second cutting blade 68b stay at the rising end and the falling end, respectively, for a predetermined time.

Specifically, as shown in fig. 28A, the distance between the horizontal plane passing through the eccentric centers CC of the first and

second cams

711a, 711b and the cam peripheral edge is formed as follows. That is, the cam peripheral points b and g that are 90 degrees apart from the cam peripheral points a and f around the eccentric center CC are formed to have the shortest distance, that is, the position where the first cutting blade 68a maintains the top dead center. The cam peripheral points c and h are formed to linearly increase from the shortest distance to the longest distance, that is, the first cutting blade 68a is linearly changed from the position of the top dead center to the position of the bottom dead center, from the cam peripheral points b and g to the cam peripheral points c and h deviated by 90 degrees around the eccentric center CC.

The longest distance is formed from the cam peripheral points c and h to the cam peripheral points d and i that are 90 degrees apart around the eccentric center CC, that is, the position where the first cutting blade 68a is maintained at the bottom dead center. Further, the cam peripheral points d and i and the cam peripheral points a and f that are 90 degrees apart around the eccentric center CC are linearly decreased from the longest distance to the shortest distance, that is, the first cutting blade 68a is linearly changed from the position of the bottom dead center to the position of the top dead center.

The first cam 711a and the second cam 711b are eccentrically fitted to both ends of the camshaft 705, and the second cam 711b is fitted to the camshaft 705 so as to be shifted from the first cam 711a by a predetermined angle, for example, by 30 degrees in phase, similarly to the first cam 701a and the second cam 701b of the above-described embodiment. The origin mark m is set to indicate that the first cam 711a is located at the cam peripheral point a when detected by the stopper detecting device 704.

In the first cutting device 54 and the second cutting device 55 having the first cam 711a and the second cam 711B having such shapes, when the rotation angle of the camshaft 705 before the start of cutting is set to 0 degrees, as shown in fig. 28B, the cam peripheral edge point a of the first cam 711a contacts the upper surface of the first holding member 69a, and the cam peripheral edge point e of the second cam 711B contacts the upper surface of the second holding member 69B. Accordingly, the height of the lower end of the first cutting blade 68a is at the height kmax of the top dead center, and the height of the lower end of the second cutting blade 68b is at the height ko lower than the height hmax of the top dead center.

The first cutting blade 68a maintains the height kmax of the top dead center until the rotation angle of the cam shaft 705 reaches 90 degrees (the cam peripheral edge point b of the first cam 711a contacts the upper surface of the first holding member 69 a) by the rotation of the first cam 711 a. The first cutting blade 68a starts to descend after the rotational angle of the camshaft 705 reaches 90 degrees, and the rotational angle at which the first cutting blade 68a reaches the camshaft 705 is

When the height kc is less than (180 °) the cam peripheral edge point x of the first cam 711a contacts the upper surface of the first holding member 69a, the first cut portion Q1 of the first carrier tape T1 is cut.

The first cutting blade 68a ends the cutting of the first cut portion Q1 of the first carrier tape T1 when reaching the height kmin of the bottom dead center at which the rotation angle of the camshaft 705 is 180 degrees (the cam peripheral edge point c of the first cam 711a contacts the upper surface of the first holding member 69 a), and maintains the height kmin of the bottom dead center until the rotation angle of the camshaft 705 reaches 270 degrees (the cam peripheral edge point d of the first cam 711a contacts the upper surface of the first holding member 69 a).

The first cutoff blade 68a starts to ascend after the rotation angle of the camshaft 705 reaches 270 degrees, and stops ascending when it reaches the height kmax of the top dead center at which the rotation angle of the camshaft 705 reaches 360 degrees (the cam peripheral edge point a of the first cam 711a contacts the upper surface of the first holding member 69 a). The stop of the rise of the first cutting blade 68a is performed by detecting the origin mark m of the stopper 703 by the stopper detection device 704.

On the other hand, the second cutting blade 68b reaches the height kmax of the top dead center at which the rotation angle of the camshaft 705 is 30 degrees (the cam peripheral edge point f of the second cam 711b contacts the upper surface of the second holding member 69 b) by the rotation of the second cam 711b rotating simultaneously with the first cam 711a, and maintains the height kmax of the top dead center until the rotation angle of the camshaft 705 reaches 120 degrees (the cam peripheral edge point g of the second cam 711b contacts the upper surface of the second holding member 69 b). The second cutting blade 68b starts after the rotational angle of the cam shaft 705 reaches 120 degreesThe second cutting blade 68b is lowered to reach the cam shaft 705 at a rotation angle of

At the cutting height kc (the cam peripheral edge point y of the second cam 711b is in contact with the upper surface of the second holding member 69 b), the cutting of the second cutting portion Q2 of the second carrier tape T2 is started.

The second cutting blade 68b ends the cutting of the second cut portion Q2 of the second carrier tape T2 when reaching a height kmin of a bottom dead center at which the rotation angle of the camshaft 705 is 210 degrees (the cam peripheral edge point h of the second cam 711b contacts the upper surface of the second holding member 69 b), and maintains the height kmin of the bottom dead center until the rotation angle of the camshaft 705 reaches 310 degrees (the cam peripheral edge point i of the second cam 711b contacts the upper surface of the second holding member 69 b). The second cutting blade 68b starts to ascend after the rotation angle of the cam shaft 705 reaches 310 degrees, and stops ascending when the rotation angle of the cam shaft 705 reaches the height ko at which the rotation angle of the cam shaft 705 reaches 360 degrees (the cam peripheral edge point e of the second cam 711b contacts the upper surface of the second holding member 69 b), that is, simultaneously with the stoppage of the ascending of the first cutting blade 68 a.

According to the first cutting device 54 and the second cutting device 55 having the first cam 711a and the second cam 711b having such shapes, the first cutting blade 68a and the second cutting blade 68b are respectively stopped at the rising end and the falling end for a certain time, and the second carrier tape T2 is cut by the second cutting blade 68b during at least a part of the time period during which the first cutting blade 68a is stopped; the first carrier tape T1 is cut by the first cutting blade 68a during at least a part of the period in which the second cutting blade 68b is stopped.

Thus, the timing at which the first cutting blade 68a receives the maximum cutting resistance to cut the first carrier tape T1 can be shifted from the timing at which the second cutting blade 68b receives the maximum cutting resistance to cut the second carrier tape T2, and therefore the rotational force of the camshaft 705 can be reduced, and the small-output gear motor 702 can be used. Further, compared to the case of the above embodiment where the cutting blade does not stay, the range of the vertical movement of the first cutting blade 68a and the second cutting blade 68b can be reduced, and therefore the cutting cycle time can be shortened.

(8. Effect)

The splicing device 20 of the above embodiment includes: a first positioning device (first tape conveying device 50) that conveys the first carrier tape T1 containing the components e, positions the first carrier tape T1 at a first cut position Lc1, and then positions a cut end of the first carrier tape T1 at a splicing position LS; and a second positioning device (second tape conveying device 51) for conveying the second carrier tape T2 containing the components e in a direction close to the first carrier tape T1, positioning the second carrier tape T2 at a second cutting position Lc2, and then positioning the cut end of the second carrier tape T2 at the splicing position LS.

The splicing device 20 further includes: a first cutting blade 68a that cuts off the unnecessary portion Tf1 in the first carrier tape T1 positioned at the first cutting position Lc1 by the first positioning device 50; a second cutting blade 68b that cuts off the unnecessary portion Tf2 in the second carrier tape T2 positioned at the second cutting position Lc2 by the second positioning device 51; a driving device 72 for driving the first cutting blade 68a and the second cutting blade 68 b; and a splicing device 58 for splicing the splicing tape 30 across the cut ends of the first carrier tape T1 and the second carrier tape T2 positioned at the splicing position LS, respectively.

Thus, since the splicing device 20 is configured to drive the first cutting blade 68a and the second cutting blade 68b by one drive device 72, it is possible to reduce the size and suppress the increase in energy consumption and component cost, as compared with a configuration in which the first cutting blade 68a and the second cutting blade 68b are driven by two drive devices, respectively.

Further, the single driving device 72 shifts the driving timing of the first cutting blade 68a and the second cutting blade 68b to start cutting the first carrier tape T1 and the second carrier tape T2 at different timings. Thus, the timing at which the first cutting blade 68a receives the maximum cutting resistance to cut the first carrier tape T1 can be shifted from the timing at which the second cutting blade 68b receives the maximum cutting resistance to cut the second carrier tape T2, and therefore, the driving force of the driving device 72 can be reduced, and a small-output driving device 72 can be used.

The first cutting blade 68a and the second cutting blade 68b cut the first carrier tape T1 and the second carrier tape T2 by moving up and down, respectively, one driving device 72 stops the first cutting blade 68a and the second cutting blade 68b at the rising end and the falling end, respectively, for a predetermined time, and cuts the second carrier tape T2 by the second cutting blade 68b during at least a part of the time during which the first cutting blade 68a is stopped; the first carrier tape T1 is cut by the first cutting blade 68a during at least a part of the period in which the second cutting blade 68b is stopped.

Thus, the timing at which the first carrier tape T1 is cut by the first cutting blade 68a having the greatest cutting resistance can be shifted from the timing at which the second carrier tape T2 is cut by the second cutting blade 68b having the greatest cutting resistance, so that the driving force of the driving device 72 can be reduced, and a small-output driving device 72 can be used. Further, since the range of the vertical movement of the first cutting blade 68a and the second cutting blade 68b can be reduced as compared with the case where the cutting blade is not stopped, the cutting cycle time can be shortened.

Further, since the single driving device 72 includes the detection devices (the stopper 703 and the stopper detection device 704) for detecting the operation states of the first cutting blade 68a and the second cutting blade 68b, the first carrier tape T1 and the second carrier tape T2 can be cut with high accuracy.

The splicing device 20 includes a first cutting blade unit 71a and a second cutting blade unit 71b, and the first cutting blade unit 71a includes: a first cutoff knife 68 a; and a first support member 70a that movably supports the first cutting blade 68a, and the second cutting blade unit 71b includes: a second cutting blade 68b formed in the same shape as the first cutting blade 68 a; and a second support member 70b which movably supports the second cutting blade 68b and which is formed of a member having a shape symmetrical to the first support member 70a with respect to a plane perpendicular to the conveying direction of the first carrier tape T1 and the second carrier tape T2 and passing through the splicing position LS. This makes it possible to compactly configure the first holding member 69a, the second holding member 69b, and the first support member 70a, the second support member 70 b.

(9. other)

In the above embodiment, the drive device 72 is configured to include the eccentric cam having a disk shape, but for example, an elliptical disk-shaped cam may be fitted to both ends of the camshaft 705 without being eccentric. Although the driving device 72 is configured to include a cam mechanism, a rack and pinion mechanism may be provided.

The driving device 72 is configured to include a stopper 703 having an origin mark m and a stopper detecting device 704 for detecting the origin mark m by reflected light, but may be configured to include a stopper having a notch and a light receiving/emitting element for detecting light transmitted through the notch. As described above, the present invention can take various forms without departing from the scope of the present invention as set forth in the claims.

Description of the reference numerals

20 … splicing device, 21 … device body, 22 … cover, 30(30a, 30b) … splicing tape, 31 … base tape, 32 … top film, 35 … top film peeling device, 36 … splicing tape supply member conveying device, 38 … supply tape reel holding part (holding part), 50 … first tape conveying device (positioning device), 51 … second tape conveying device (positioning device), 58 … engaging device, 68a … first cutting blade, 68b … second cutting blade, 70a … first supporting member, 70b … second supporting member, 71a … first cutting blade unit, 71b … second cutting blade unit, 72 … driving device, 351 … film peeling member, 352 … top film conveying device, 703 … stopper (detecting device), 704 … stopper (detecting device), T (T … ) … carrier tape splicing tape supply first splicing tape cutting position, TT …, and Lc carrier tape supply first cutting blade cutting position, Lc2 … second cut position, LS … splice position, e … element

Claims

1. A splicing device is provided with:

a first positioning device that conveys a first carrier tape containing components and positions the first carrier tape at a first cutting position, and then positions a cut end of the first carrier tape at a splicing position;

a second positioning device that conveys a second carrier tape containing components in a direction close to the first carrier tape, positions the second carrier tape at a second cutting position, and then positions a cut end of the second carrier tape at the splicing position;

a first cutting blade that cuts off an unnecessary portion of the first carrier tape positioned at the first cutting position by the first positioning device;

a second cutting blade that cuts off an unnecessary portion of the second carrier tape positioned at the second cutting position by the second positioning device;

a driving device for driving the first cutting knife and the second cutting knife; and

a splicing device that splices a splicing tape across the cut end portions of the first and second carrier tapes positioned at the splicing positions, respectively,

the one driving device shifts driving timings of the first cutting blade and the second cutting blade to start cutting the first carrier tape and the second carrier tape at different timings.

2. Splicing device according to claim 1,

the first cutting knife and the second cutting knife respectively cut off the first carrier tape and the second carrier tape through up-and-down movement,

the driving device makes the first cutting knife and the second cutting knife respectively stay for a certain time at the ascending end and the descending end,

cutting the second carrier tape by the second cutting blade during at least a part of a period in which the first cutting blade is caused to stay,

cutting the first carrier tape by the first cutting blade during at least a part of a period during which the second cutting blade is caused to stay.

3. Splicing device according to claim 1,

the one driving device is provided with a detection device for detecting the working states of the first cutting knife and the second cutting knife.

4. Splicing device according to claim 2,

5. Splicing device according to any one of claims 1 to 4,

the splicing device is provided with a first cutting knife unit and a second cutting knife unit,

the first cutting blade unit includes:

the first cutting knife; and

a first supporting member that movably supports the first cutting blade,

the second cutting blade unit includes:

the second cutting blade is formed into the same shape as the first cutting blade; and

and a second support member configured to movably support the second cutting blade, the second support member being configured to be symmetrical with the first support member with respect to a plane perpendicular to a conveying direction of the first carrier tape and the second carrier tape and passing through the splicing position.