JP5171511B2 - Electronic component supply cassette, electronic component supply cart, and electronic component mounting apparatus - Google Patents

Description

  The present invention relates to an electronic component supply cassette, an electronic component supply cart, and an electronic component mounting apparatus, and more particularly to an electronic component supply cassette that can be easily mounted, and an electronic component supply cart and an electronic component mounting apparatus that use them.

  In recent years, in the production of circuit boards for mounting electronic components on printed circuit boards, it has been strongly desired to improve the operation rate of production equipment and to complete the setup change accompanying the model change in a short time to improve the operation rate. . In particular, the number of small parts increases, and how to easily set the electronic component supply device at a predetermined position is important in the changeover of the mounting apparatus.

  Conventionally, in order to solve this problem, it has been proposed to place a supply reel and a take-up reel in one cassette and set them at a predetermined position with one touch. Such a proposal of the prior art is such that a window for supplying parts to the cassette is provided in order to reuse the cassette itself, and each reel can be rotated in the reverse direction. The reel is driven externally, (2) the cover tape is removed from the component supply tape and the number of reels in the cassette is reduced to two, and (3) the take-up reel and supply reel are arranged horizontally.

Japanese Patent Application Laid-Open No. 07-242284 Japanese Patent Laid-Open No. 04-365520 Japanese Utility Model Publication No. 06-65263

  As for (1), there is a small component of 0.2mm x 0.4mm in recent electronic components, and it is necessary to reduce the cassette width. However, there is a problem that the cassette width cannot be reduced because the take-up reel is driven externally via a pulley. Although there is a description that the take-up reel or the like is externally driven, there is no specific disclosure. Regarding (2), an arm is attached or parts are fixed with an adhesive to prevent popping out of the supply tape, but this is not practical for at least small parts. Finally, regarding (3), the horizontal type has a problem of taking a depth length.

  Accordingly, a first object of the present invention is to provide a practical electronic component supply cassette that can be mounted with one touch.

  A second object of the present invention is to provide an electronic component supply cart and an electronic component mounting apparatus that can use the electronic component supply cassette.

  In order to achieve the first object of the present invention, a supply tape comprising a carrier tape in which recesses for accommodating electronic components are formed at a predetermined pitch, and a cover tape covering the carrier tape, and the supply tape, A supply reel to be stored, a supply tape feeding means for feeding the supply tape from the supply reel, and the cover tape installed on the supply reel side from the drive position of the supply tape feeding means is detached from the carrier tape, and thereafter A first feature is that it has a detachment / rejoining means for rejoining and a take-up reel for winding the rejoined supply tape.

  In order to achieve the first object of the present invention, the second feature is that the detachment / rejoining means includes means for cutting the cover tape left and right from the center.

  In order to achieve the first object of the present invention, a supply tape comprising a carrier tape in which recesses for accommodating electronic components are formed at a predetermined pitch and a cover tape covering the carrier tape, and the supply An electronic component supply cassette having a supply reel for storing a tape, a supply tape feeding means for feeding the supply tape from the supply reel, and a take-up reel for winding the supply tape carried out from the recess, A third feature is that the supply reel and the take-up reel are arranged vertically, and the supply tape delivery means is arranged on either the left or right side of the supply reel.

  Furthermore, in order to achieve the first object of the present invention, in addition to the first to third features, an opening for driving at least one of the supply tape feeding means and the take-up reel from the outside is provided. This is the fourth feature.

  In order to achieve the first object of the present invention, a supply tape comprising a carrier tape in which recesses for accommodating electronic components are formed at a predetermined pitch and a cover tape covering the carrier tape, and the supply An electronic component supply cassette having a supply reel for storing a tape, a supply tape feeding means for feeding the supply tape from the supply reel, and a take-up reel for winding the supply tape carried out from the recess, A fifth feature is that an opening for driving at least one of the supply tape feeding means and the take-up reel from the outside is provided.

  In order to achieve the first object of the present invention, in addition to the first to fifth features, the supply tape delivery means includes the supply tape for driving a predetermined hole formed in the carrier tape. The sixth feature is that the sprocket is sent out.

  Furthermore, in order to achieve the second object of the present invention, there is provided a mounting base for installing the electronic component supply cassette having the fourth or fifth feature and means for directly driving the supply tape feeding means. 7 features.

  In order to achieve the second object of the present invention, it is a seventh object of the present invention to include an installation base for installing the electronic component supply cassette having the fourth or fifth feature and means for directly driving the take-up reel. It is characterized by.

  ADVANTAGE OF THE INVENTION According to this invention, the practical electronic component supply cassette which can be mounted | worn with one touch can be provided.

  Moreover, according to this invention, the electronic component supply cart and electronic component mounting apparatus which can use the said electronic component supply cassette can be provided.

  Hereinafter, embodiments of the electronic component mounting apparatus 1, the electronic component supply cart 50, and the electronic component supply cassette 30 will be described with reference to the drawings. In the present invention, the electronic component mounting apparatus 1 refers to an apparatus that does not include the component supply cart 50 and the electronic component supply cassette 30. In the following description, the electronic component mounting apparatus 1 is simply referred to as the main body 1. FIG. 1 is a plan view of the main body 1. The main body 1 is divided into a total of four blocks (the reference numerals are basically only LU blocks): two blocks LU and LD on the left and right and two blocks RU and RD on the right. Each block is provided with a number of known tape feeders, a component supply area 3, a mounting head 16, a mounting head is fixed, and a mounting head body 11 that moves on a left / right moving rail 8 constituted by a linear motor, In addition, in order to correct the position of the suction nozzle of each mounting head 16 during mounting on the substrate, a component recognition camera 19 that captures the suction holding state of the component of the suction nozzle is provided. The left and right blocks are each provided with a vertical movement rail 9 constituted by a linear motor in which a mounting head body 11 common to the upper and lower blocks moves up and down. Further, in the center, there are four chutes 5 for transporting the substrate P, the upper two chutes 5c and 5d are for the upper block substrate transport line U, and the lower two chutes 5a and 5b are for the lower block. The substrate transport line D is configured.

  In such an apparatus configuration, the substrate P is distributed by the delivery unit 7 and carried into the substrate transport line U or D. The mounting head 16 is moved by the mounting head body 11, sucks a predetermined component from the component supply area 3, and mounts it on the substrate P at a predetermined position. The electronic component supply cart 50 is mounted in the component supply area 3.

  First, FIG. 2 shows an embodiment of the present invention of an electronic component supply cassette 30 and an electronic component supply cart 50. The component supply cart 50 is roughly divided into a base unit 51, an installation base 52 for installing the electronic component supply cassette 30, a handle unit 53, and a cassette control mechanism unit 80 that is fixed to the installation base 52 and controls the electronic component supply cassette 30. ing. The base portion 51 includes four moving wheels 51S and two fixing portions 51K for fixing the electronic component supply cart 50. The handle 53 is operated to move in the Y + direction shown in the drawing, and is inserted and set in the apparatus main body. Hereinafter, the direction perpendicular to the paper surface is defined as the X direction.

  Next, the configuration and operation of the electronic component supply cassette 30 and the cassette control mechanism 80 will be described with reference to FIGS. 3 and 4. FIG. 3 is a diagram showing in detail the configuration of the electronic component supply cassette 30 and the cassette control mechanism 80 shown in FIG. 4A and 4B are diagrams showing the configuration of the cutter unit 40, where FIG. 4A is a perspective view and FIG. 4B is a cross-sectional view.

  The electronic component supply cassette 30 has a carrier tape 61 having a recess 63 for storing an electronic component in a case 39 having a carrying handle 38 and a supply reel 31 for storing a supply tape 60 (see FIG. 5) described later. The sprocket 32 for feeding the supply tape 60 from the supply reel 31 and the supply tape 60U already supplied after the electronic components are adsorbed by the adsorption nozzle of the mounting head 16 of the main body 1 before the sprocket 32 And a take-up reel 33 for taking up the supply tape 60U via a pair of horizontal conversion guide rollers 36A and 36B.

  At the suction position by the mounting head, there is provided a cutter unit 40 shown in FIG. 4 that cuts the cover tape 62, which is another component of the supply tape 60, and prevents the electronic components from falling off from the center to the left and right. The cutter unit 40 detaches the cover tape 62 from the carrier tape 62, a cover tape guide 42 that becomes a base at the time of cutting, a cover tape pressing member 43 that guides the cover tape 62 after detachment, and a cutter 41 that cuts the cover tape 62. The cover tape 62 includes a cover opening guide 44 that guides the cover tape left and right so that the cover tape 62 that has been cut to the left and right is not obstructed by the electronic component suction holes 45.

  Further, in the middle of the cutter unit 40, as shown in FIG. 5, an LED 37 for illuminating the position of the sprocket hole 64 provided on the side of the supply tape 60 from above is provided. The supply reel brake 31B applies a brake so that the supply reel 31 is not always rotated by the tension received from the sprocket 32 via the guide roller 31C, and applies an appropriate tension to the supply tape 60 between the supply reel 31 and the sprocket 32. The take-up reel brake 33B is fixed by applying a brake to the take-up reel 33 because the take-up reel 33 is in a free state before the electronic component supply cassette 30 is installed on the installation base 52. However, when the electronic component supply cassette 30 is installed on the installation table 52, the take-up reel brake 33B is pushed by the release protrusion 86 provided in the cassette control mechanism 80, and the brake by the take-up reel brake 33B is released. . At the same time, the take-up reel 33 is driven and fixed by a take-up reel drive roller 82R of the cassette control mechanism 80 described later from the opening. The locking hook 34 engages with a cassette locking piece 85 provided in the cassette control mechanism 80 where the electronic component supply cassette 30 is installed on the installation table 52, and fixes the electronic component supply cassette 30 to the installation table 52. To do.

  On the other hand, the cassette control mechanism unit 80 includes a sprocket drive roller 81R and a sprocket drive motor 81M that directly drive the circumferential portion of the sprocket 32, and a take-up reel drive roller 82R that directly drives the circumferential portion of the take-up reel 33 and a winding. The electronic component supply cassette 30 is provided after the PSD camera 84 and the electronic component supply cassette 30 provided on the head of the drive motor 82M and the camera support 83S and detecting the circular sprocket hole 64 are installed on the installation base 52. An air cylinder 83E into which the camera support 83S is inserted from an opening (not shown) is provided.

  The sprocket 32 and the take-up reel 33 are driven from an opening provided in the case 39 of the electronic component supply cassette 30 and are driven directly without passing through pulleys, belts or gears. The reason is that, for example, when the pulley is interposed, the width (X direction) of the electronic component supply cassette 30 becomes the sprocket width or the take-up reel width + pulley width, and becomes thicker. A thin motor is used for the sprocket drive motor 81M and the take-up reel motor, and the sprocket drive roller and the take-up reel drive roller are directly driven coaxially. As a result of such a device, in the present embodiment, the width of the electronic component supply cassette 30 used for small components such as 0.2 mm × 0.4 mm can be reduced to 15 mm or less. Further, in the case of the sprocket 32, there is play because it has a steep convex shape for inserting the teeth of the sprocket 32 into the sprocket hole 64. Therefore, the sprocket driving roller 81R is not a gear type, but a roller type is adopted to improve the accuracy when the sprocket 32 rotates.

  Next, using such a mechanism, the operations of the electronic component supply cassette 30 and the cassette control mechanism 80 when the mounting head 16 of the main body 1 sucks the electronic components in the supply tape 60 are as follows: (1) Supply tape 60 and the flow of the supplied tape 60U, and (2) control of electronic component mounting by a PSD camera.

  First, the flow of each tape in (1) will be described. The sprocket 32 is rotated by a sprocket drive motor 81M. The supply tape 60 moves to the cutter unit 40 position while receiving an appropriate tension from the supply reel brake 31B. Therefore, the cover tape 61 on the upper surface of the supply tape 60 is cut left and right from the center by the cover tape cutter 41. The cut cover tape 61 is divided into left and right by the cover tape opening guide 44 and passes through the electronic component suction hole 45. The cover tape 61 that has passed through is joined again and integrally with the carrier tape 62 that has sucked the electronic component through the electronic component suction hole 45, and the joined tape becomes the supplied tape 60U.

  The supplied tape 60U passes between the sprocket 32 and the sprocket and reaches the space roller 35. The space roller 35 is raised substantially vertically to avoid the camera support 83S inserted in the electronic component supply cassette 30, and returned to the horizontal state by the pair of horizontal conversion guide rollers 36A and 36B. Finally, the supplied tape 60U is changed in direction by 36A of the horizontal conversion guide rollers and collected on the take-up reel 33 rotating by the take-up drive motor 82M. When the electronic component supply cassette 30 is installed on the installation base 52, the end of the supply tape 60 is connected to the electronic component supply cassette 30, and the cover tape 61 is cut from the center by the cover tape cutter 41. It is set in a state divided into left and right.

  According to such this embodiment, the cover tape 61 is cut from the center to the left and right by the cutter 40 and joined to the carrier tape 62 again, so that the cover tape is not collected outside the electronic component supply cassette, Moreover, it can be collected together with the carrier tape 62 by one take-up reel.

  Further, according to the present embodiment, the thickness of the electronic component supply cassette 30 can be reduced by directly driving the circumferential portion of the sprocket 32 and the take-up reel 33 without using a pulley or the like. As a result, many electronic component supply cassettes 30 can be mounted on the installation base 52.

  Further, according to the present embodiment, by driving the sprocket 32, it is possible to independently control the feed speed of the supply tape at the electronic component suction portion, so that the supply tape can be accurately positioned and the electronic Can absorb parts.

  Furthermore, according to the present embodiment, the supply reel 31 and the take-up reel 32 are arranged up and down, and the sprocket 32 is arranged on the main body 1 side of the supply reel 31, thereby supplying electronic components with a small depth width in the main body 1 direction. Can provide cassettes. As a result, the apparatus width including the main body 1 can be reduced.

  According to the above embodiment, when the electronic component supply cart is not installed, the take-up reel brake 33B prevents the take-up reel 33 from rotating, and when installed, the brake is automatically released and the take-up drive is performed. Appropriate tension can be applied by the motor 82.

  According to the above embodiment, a practical electronic component supply cassette that can be mounted with one touch can be provided.

  In the above embodiment, the cover tape 61 is cut left and right from the center by the cutter 41 and joined to the carrier tape 62 again. However, the cover tape 61 is peeled off without being cut and joined to the carrier tape 62 again. May be.

  In the above embodiment, the take-up reel 33 is driven externally. However, the same effect can be obtained even if a constant tension is applied in the winding direction by a spring of the take-up reel without external drive.

  Furthermore, for parts that are not small parts and do not require high suction position accuracy, only the take-up reel 33 may be externally driven without externally driving the sprocket 32.

  Next, the operation of controlling electronic component mounting by the PSD camera 84 in (2) will be described. In the main body 1, it is necessary to detect the position of the sprocket hole provided also in the supply tape 60 before the suction position and take the timing with the suction nozzle provided in the mounting head 16. Conventionally, the position of the sprocket hole 64 is detected by a CCD camera provided in the mounting head 16. However, due to the positional error of the mounting head, which is a small electronic component, it is difficult to reliably suck the electronic component from the supply tape by the suction nozzle in the conventional method.

  Therefore, in the present embodiment, when the electronic component supply cassette is installed, the CCD camera 84 is inserted in the vicinity of the sprocket hole, for example, two in front of the electronic component suction hole 44, and the position of the sprocket hole is detected. When the hole reaches the electronic component suction hole 44, the position is corrected. For this purpose, the sprocket hole is illuminated from above by the LED 37, the PSD camera 84 images the sprocket hole, and the position of the sprocket hole is detected. Based on the detected position of the sprocket hole, the amount of rotation of the sprocket 32 is controlled to correct the stop position.

  For example, since the sprocket holes 64 are provided at an interval of 4 mm at a rate of one for every two electronic components, the detection of one sprocket hole 64 is involved in the adsorption of the two recesses 63, that is, two electronic components. .

  According to the position detection mechanism of the sprocket hole 64 according to the present embodiment, a control correction mechanism that can correct the suction position with high accuracy can be provided.

  In the above embodiment, the sprocket 32 is controlled and corrected. However, since the interval in the feed tape feeding direction between the position where the position detection mechanism detects the sprocket hole and the suction position of the suction nozzle is obtained by calculation, for example, the position detection is performed. Correction may be performed by changing the suction position of the mounting nozzle (the suction position in the feeding direction of the supply tape) based on the detection result by the mechanism and the interval.

In the above embodiment, the cassette control mechanism is provided in the electronic component supply cart. Since the thickness varies depending on the components supplied by the electronic component supply cassette, when the cassette control mechanism is provided in the main body 1 corresponding to the thickness, the electronic components that can be used by arranging the cassette control mechanism in the main body 1 are used. The type of supply cassette is also limited. Therefore, by providing an electronic component supply cart suitable for the configuration of the electronic component supply cassette required for the model to be manufactured, various models can be supported.
In other words, by providing the main body 1 with the cassette control mechanism, the number of electronic component supply carts can be reduced, and an inexpensive apparatus as a whole can be obtained.
In any case, according to this embodiment described above, it is possible to provide an electronic component supply cart or an electronic component mounting apparatus that can use the electronic component supply cassette.

  Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the present invention is not limited to the various embodiments described above without departing from the spirit of the present invention. It encompasses alternatives, modifications or variations.

It is a top view of an electronic component mounting apparatus. It is a figure which shows the electronic component supply cart in this embodiment. It is a figure which shows the electronic component supply cassette and cassette control mechanism part in this embodiment. It is a figure which shows the cutter part in this embodiment. It is a figure which shows an example of a supply tape.

Explanation of symbols

1: Electronic component mounting device 3: Component supply area 5: Chute 7: Delivery section 11: Mounting head body 16: Mounting head 19: Component recognition camera 30: Electronic component supply cassette 31: Supply reel 31B: Supply reel Brake 32: Sprocket 33: Take-up reel 33B: Take-up reel brake 34: Locking hook 35: Space roller 36: Horizontal conversion guide roller 37: LED
40: Cutter unit 41: Cover tape cutter 42: Cover tape guide 43: Cover tape pressing member 44: Cover tape opening guide 45: Electronic component suction hole 50: Electronic component supply cart 52: Installation base feeder fixing unit 60: Supply tape 60U : Supply tape already supplied 61: Cover tape 62: Carrier tape 63: Recess for storing electronic components 64: Sprocket hole 80: Cassette control mechanism 81 M: Sprocket drive motor 81 R: Sprocket drive roller 82 M: Take-up reel drive motor 82 R: Take-up reel drive roller 83E: Air cylinder 83S: Camera support 84: PSD camera 85: Cassette locking piece 86: Release protrusion.

Claims (10)

A supply tape comprising a carrier tape having recesses for accommodating electronic components formed at a predetermined pitch and a cover tape covering the carrier tape, a supply reel for storing the supply tape, and a supply tape from the supply reel Supply tape delivery means to be sent out, detachment rejoining means for detaching the cover tape installed on the supply reel side from the drive position of the supply tape delivery means from the carrier tape and then rejoining, and the rejoined supply It has a take-up reel that takes up the tape,
The detachment rejoining means has means for cutting the cover tape from the center to the left and right,
The supply reel and the take-up reel are arranged up and down, and the supply tape delivery means is arranged on either side of the supply reel ,
Brake means for braking the rotation of the take-up reel;
An electronic component supply cassette having an opening for driving the take-up reel from the outside, and means for releasing the brake means when the means for driving from the outside is connected . Electronic component supply cassette according to claim 1, characterized in that a further opening for driving said supply tape delivery means from outside.   3. The electronic component supply cassette according to claim 1, wherein the supply tape delivery means is a sprocket for delivering the supply tape that drives a predetermined hole formed in the carrier tape.   4. The electronic component supply cassette according to claim 1, further comprising means for braking the rotation of the supply reel. 2. An electronic component supply cart comprising: an installation base for installing the electronic component supply cassette according to claim 1; and means for driving the releasing means.   An electronic component supply cart comprising an installation table for installing the electronic component supply cassette according to claim 2 and means for directly driving the supply tape delivery means. An electronic component supply cart comprising an installation base for installing the electronic component supply cassette according to claim 1 and means for directly driving the take-up reel. An electronic component mounting apparatus comprising the electronic component supply cart according to claim 5 . An electronic component mounting apparatus comprising the electronic component supply cart according to claim 6 . An electronic component mounting apparatus comprising the electronic component supply cart according to claim 7 .

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