JP2010245385A - Electronic component mounting device and component feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic component feeding device which is capable of reliably feeding a supply tape into a sprocket, for feeding an electronic component to an adsorbing position, after automatically mounting the supply tape and can be miniaturized or improve an uptime ratio, or to provide an electronic component mounting device which includes the electronic component feeding device and improves an uptime ratio. <P>SOLUTION: An electronic component mounting device includes a sprocket driving part 30 comprising a sprocket 31 and a pressing means 40. The sprocket 31 houses an electronic component therein, is rotated while being engaged with a sprocket hole that a supply tape moving a tape chute 2s has, and moves the supply tape to an adsorbing position where the electronic component is adsorbed from the outside. The pressing means presses the supply tape onto the tape chute 2s. The device further includes an inserting means including an inserting roller 71 and a rotational driving means. The inserting roller is provided in front of the sprocket driving part 30 and includes a plurality of insertion engaging parts to be engaged with the sprocket hole along its outer circumference, and the rotational driving means rotates the inserting roller 71. In addition, the device includes a supply tape inserting part 70 including a load reducing means for reducing a load of the sprocket driving part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electronic component supply device and a component mounting device, and more particularly to a component supply device that can reliably supply an electronic component or realize an electronic component mounting device with a high operating rate.

In recent years, in the production of circuit boards by mounting electronic components on a printed circuit board, it is desired to improve the operating rate of the electronic component mounting apparatus. For this purpose, it is important to reliably supply the electronic components and complete the replenishment time or setup change of the electronic components in a short time.
As a conventional technique, Patent Document 1 described below discloses a method of automatically mounting a supply tape by inserting one end of a supply tape that houses an electronic component into a component supply device.

JP 2005-539370 A

  When the electronic parts to be supplied are finished, the above-described conventional technique has a problem that the electronic tape cannot be mounted for a time for newly mounting the supply tape, and the operation rate of the electronic component mounting apparatus is reduced. In order to perform automatic mounting in order to solve the above-mentioned problem, it is necessary to reliably feed the supply tape to the sprocket that sends the electronic component to the suction position without buckling.

  In the above prior art, the supply tape is driven by a pair of rollers arranged at opposite positions or by a sprocket provided on one side, and the supply of electronic components is unstable due to sliding, play, and the like. In addition, the former pair of roller systems requires a space for two rollers, and there is a problem that a component supply device becomes large. Furthermore, when the electronic component to be supplied is completed, the time for automatically mounting the supply tape cannot be mounted, and the operation rate of the electronic component mounting apparatus decreases.

Accordingly, a first object of the present invention is to provide a component supply device capable of reliably feeding a supply tape to a sprocket that automatically sends an electronic component to a suction position after the supply tape is automatically mounted.
A second object of the present invention is to provide a small component supply apparatus.
Furthermore, a third object of the present invention is to provide an electronic component supply apparatus that can improve the operating rate of the electronic component mounting apparatus, and to improve the operating rate of the electronic component mounting apparatus by using the electronic component supplying apparatus.

  In order to achieve the first or second object of the present invention, an electronic component is housed and rotated by engaging with a sprocket hole of a supply tape that moves on a tape chute, and the electronic component is externally attached to the supply tape. In a component supply device having a sprocket drive unit comprising a sprocket that moves to a suction position to be sucked from and a pressing means that presses the supply tape against a tape chute, the sprocket hole is provided in front of the sprocket drive unit, Supply tape having an insertion roller having a roller having a plurality of insertion engagement parts on the outer periphery, an insertion means having a rotation drive means for rotating the insertion roller, and a load reduction means for reducing the load on the sprocket drive part The first feature is to have an insertion portion.

  In order to achieve the first or second object of the present invention, in addition to the first feature, the supply tape includes a carrier tape that houses the electronic component and a cover tape that covers the carrier tape, The presser means includes a cutting means for cutting the cover tape and a means for the cut cover tape to avoid the suction position.

  Furthermore, in order to achieve the first or second object of the present invention, in addition to the first or second feature, an insertion port provided in front of the supply tape insertion portion, into which the supply tape is inserted, and the insertion Supply tape insertion detecting means for detecting that the supply tape has been inserted from the opening, and mounting for moving the supply tape to a predetermined position based on the result of the supply tape insertion detecting means provided near the insertion opening A third feature is that the apparatus has an automatic supply tape mounting section having a section driving means.

  In order to achieve the first or second object of the present invention, in addition to any one of the first to third features, the insertion engagement portion includes an engagement body that engages with a sprocket hole, and the engagement body moves. A moving space forming body that is fixed to the roller or formed integrally with the roller, a spring that pushes the engagement body in the outer radial direction of the rotation, and the engagement body is ejected from the movement space. It has a fourth feature that it has a pop-out preventing means for preventing it.

Furthermore, in order to achieve the first or second object of the present invention, in addition to the fourth feature, the fifth feature is that the moving space is cylindrical and the engagement body is a sphere.
In order to achieve the first or second object of the present invention, in addition to the fourth feature, the moving space is cylindrical, and the engagement portion engages with the sprocket hole on one end side. A sixth feature is that it has a hemispherical shape and the other end has a shape fixed to a circular plate.

Furthermore, in order to achieve the first or second object of the present invention, in addition to the fifth or sixth feature, the cylindrical moving space is formed of a cylindrical body, and the pop-out preventing means is the cylindrical body. The seventh feature is that the outer tip of the body has a diameter smaller than the maximum diameter of the joint body.
In order to achieve the first or second object of the present invention, in addition to the fifth or sixth feature, the moving space forming body has a plurality of the cylindrical moving spaces, and prevents the jumping out. An eighth feature is that the means protrudes into the moving space outside the moving space forming body, and the diameter of the moving space of the protruding portion is smaller than the maximum diameter of the engagement body. .

Furthermore, in order to achieve the first or second object of the present invention, in addition to the fifth or sixth feature, the diameter between the movements is substantially the same as the maximum diameter of the joint body, or the joint body The ninth feature is that it is larger than the maximum diameter.
In order to achieve the first or second object of the present invention, in addition to the fifth feature, the load reducing means has a tenth feature in that the sphere is rotatable.

Furthermore, in order to achieve the first or second object of the present invention, in addition to the fourth feature, the load reducing means enables the engagement body to move in the moving direction of the supply tape, or the spring. The eleventh feature is that the load reducing means is a driving force reducing means for reducing a driving force of a rotating means for rotating the insertion roller.
In order to achieve the first or second object of the present invention, in addition to the eleventh feature, the driving force reducing means has a twelfth feature in that a clutch or torque limiter is provided on the rotating means. To do.

Furthermore, in order to achieve the first or second object of the present invention, in addition to the fourth feature, a pressing variable means for changing a pressing force for pressing the engagement body against the supply tape is provided in the insertion engagement portion. The thirteenth feature is that the load reducing means has means for reducing the pressing force when feeding the supply tape during the electronic component adsorption operation by the sprocket drive section.
In order to achieve the first or second object of the present invention, in addition to the thirteenth feature, the pressing variable means is a spring formed of a shape memory alloy as a fourteenth feature.

Furthermore, in order to achieve the first or second object of the present invention, in addition to any of the first to fourteenth features, the insertion of the supply tape into the sprocket drive unit is completed, and the completed information is stored. A fifteenth feature includes an interface for transmitting to the electronic component mounting apparatus or receiving a command signal from the electronic component mounting apparatus.
Finally, in order to achieve the third object of the present invention, in the electronic component mounting apparatus including the component supply apparatus having the fifteenth feature, the component supply apparatus or the electronic component based on the completed information The sixteenth feature is to control the mounting of the.

ADVANTAGE OF THE INVENTION According to this invention, the electronic component supply apparatus which can send a supply tape reliably to the sprocket which sends an electronic component to an adsorption | suction position after mounting | wearing a supply tape automatically can be provided.
In addition, according to the present invention, a small electronic component supply apparatus can be provided.
Furthermore, the electronic component supply apparatus which can improve the operation rate of an electronic component mounting apparatus is provided, By using it, the operation rate of an electronic component mounting apparatus can be improved.

It is a top view of an electronic component mounting apparatus. It is a perspective view of the components supply cart in this embodiment. It is a figure which shows the structure of the electronic component supply apparatus in this embodiment. It is the figure which showed the supply tape automatic mounting part 20 in FIG. It is the figure which showed the AA 'cross section figure of the mounting | wearing pressing means in FIG. (a) is a schematic diagram with respect to the supply tape 60 of components with a relatively large size, and (b) is a schematic diagram with respect to the supply tape 60 of components with a vertical and horizontal size larger than 06 mm × 03 mm among small components. It is the figure which showed the pressing means 40 with a cutter of the sprocket drive part in FIG. FIG. 3A is a perspective view, and FIG. It is the figure which showed the supply tape insertion part 70 of this embodiment. FIG. 7 (a) is an enlarged view showing a first embodiment 71A of the insertion roller 71, FIG. 7 (b) is a view showing an insertion engagement portion 74A, and FIG. FIG. 5 is a diagram showing a pressing force generated when the is engaged with the supply tape 60. FIG. 6 is a view showing a state when a supply tape 60 comes to an insertion roller 61. It is the figure which showed 2nd Example 71B of the insertion roller 71. FIG. It is the figure which showed 3rd Example 71C of the insertion roller 71. It is the figure which showed the operation | movement flow in embodiment of this invention.

  Hereinafter, an embodiment of an electronic component mounting apparatus and a component supply cart 50 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. In the following description, the electronic component mounting apparatus 1 is simply referred to as a 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 has a component supply area 3 provided with a number of component supply devices, a mounting head 16, a mounting head fixed to the mounting head body 11 that moves on a rail 8 for left and right movement constituted by a linear motor, and a substrate. In order to correct the position of the suction nozzles of the mounting heads 16 when mounted on a component, a component recognition camera 19 that captures the suction holding state of the components of the suction nozzles 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. In the center, there are four substrate chutes 5 for transporting the substrate P, the upper two substrate chutes 5c, 5d are on the upper block substrate transport line U, and the lower two substrate chutes 5a, 5b are on the bottom. A substrate transport line D for the side block 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 electronic component from the component supply area 3, and mounts it on a predetermined position on the substrate P. A component supply cart 50, which is one main body of the present invention and will be described later, is mounted in the component supply area 3. In the following drawings, the conveyance of the substrate P is defined as the X direction, the direction perpendicular to X as the Y direction, and the direction perpendicular to X and Y as the Z direction. A direction in which the component supply cart 50 is mounted on the main body 1 in the lower block is defined as a Y + direction.

  First, the configuration of the component supply cart 50 will be described using the perspective view of the component supply cart 50 in the present embodiment in FIG. 2, and the configuration of the component supply apparatus 2 in the present embodiment will be described with reference to FIG. Then, operation | movement of the components supply apparatus 2 is demonstrated.

  The component supply cart 50 shown in FIG. 2 is broadly divided into a base unit 51, a component supply device fixing unit 52 for fixing the component supply device shown in FIG. 3, a handle unit 53, and a component supply reel storage unit storing a component supply reel. 54. The base portion 51 has four wheel fixing portions 51a for fixing moving wheels (not shown) at four corners, and the component supply cart 50 is fixed when the component supply cart 50 is fixed to the main body of the electronic component mounting apparatus 1. It has the lock pin 51b which fixes 50 to a floor surface. The component supply device fixing unit 52 is located in the upper part of the component supply cart 50, and the component supply device fixing unit guide 52c guides the component supply device fixing unit 2k of the component supply device 2 as shown in FIG. Is mounted on the base 52a, and the component supply device connector 2d of the component supply device 2 is connected to the component supply device signal connector 52d. The component supply device fixing portion connector 52c is regularly arranged on the component supply device base 52a so that a large number of component supply devices can be mounted. Each component supply device is supplied with a supply tape 60 loaded with electronic components from the supply reel storage unit 54 to each component supply device 2.

  As shown in FIG. 5A, the supply tape 60 basically includes a carrier tape 61 that houses the electronic component 4 in the recess 63 and a cover tape 62 that covers the carrier tape. Further, at both ends of the component supply device base 52a, when a component supply cart is inserted into the main body 1, there are component supply device guides 52e that play a role of sliding a cart guide plate (not shown) provided on the main body 1. is there. Further, the component supply device guide 52 e has a positioning hole 52 b for fixing the component supply cart 50 to the main body 1. Finally, there is a handle portion 53 so that the component supply cart 50 can be moved, and the component supply cart 50 is inserted into the main body by being moved in the Y direction which is the direction of the main body 1 by the handle 53a. At this time, the front end 53c of the side plate 53b of the handle portion 53 serves as a stopper that prevents the component supply cart 50 from being inserted any further.

  Next, the structure of the component supply apparatus 2 in this embodiment is demonstrated using FIG. The component supply device 2 is roughly divided into a supply tape automatic mounting unit 20 that automatically mounts the supply tape 60 on the component supply device 2, a sprocket drive unit 30 that moves the electronic component 4 to the mounting position, and the sprocket drive unit 30 with certainty. The main body 1 through the supply tape insertion portion 70 for inserting the supply tape 60 into the component supply device fixing portion 2k for placing the component supply device 2 on the component supply cart 50, the component supply cart 50 and the component supply cart 50. Control device that receives and controls signals from the interface 81 including the component supply device connector 2d that transmits and receives signals to and from the interface 81 and sensors that are present in the interior to be described later, and performs signal transmission and reception with the main body 1 Part 80.

Next, the configuration and operation of the automatic supply tape mounting unit 20, the sprocket drive unit 30, and the supply tape insertion unit 70, and finally the overall operation will be described in order.
First, the 1st supply tape automatic mounting part 20 is demonstrated using FIG.3 and FIG.4. The supply tape automatic loading unit 20 has two systems, A and B, which have the same configuration although they are arranged differently. The same components are indicated by the same numbers and are distinguished by subscripts A and B. FIG. 4 shows the A system among the A and B systems of the automatic supply tape mounting unit 20 in FIG. 3, and the subscript A is omitted.

  As shown in FIG. 4, the supply tape automatic mounting unit 20 includes a mounting roller 21 that is a rotating unit in contact with the supply tape 60 and a mounting roller driving motor 23 that is a rotation driving unit that drives the mounting roller 21 via a timing belt 22. The supply tape 60 is pressed against the mounting roller 21 by springs 25b provided at both ends of a pressing plate (non-rotating pressing member) 25a so that the supply tape 60 is attached to the mounting side, that is, the sprocket driving unit 30 side. The mounting pressing means (pressing means) 25 that reliably sends out, the insertion detection sensor 26 that detects that the supply tape 60 has been inserted into the mounting pressing means 25 side, and the supply tape 60 are located at the joining position M of the A and B systems. It consists of an insertion confirmation sensor 27 that confirms that it has been inserted to the front.

  The pressing plate 25a has an opening 25c having an opening widened at the insertion side end so that the supply tape 60 can be easily inserted. The insertion detection sensor 26 and the insertion confirmation sensor 27 are composed of light emitting elements 26h and 27h and light receiving elements 26j and 27j, respectively, which are positioned relative to holes provided in the insertion path or the traveling path of the supply tape 60. It has a structure arranged in.

  FIG. 5 is a cross-sectional view taken along line AA ′ of the mounting pressing means 25 in FIG. 4. FIG. 5 (a) is a schematic diagram for a relatively large component supply tape 60, and FIG. The schematic diagram with respect to the supply tape 60 of the parts whose vertical and horizontal sizes are larger than 0.6 mm × 0.3 mm is shown. A cover tape 65 is also provided on the lower side of the supply tape 60 for small parts. Reference numeral 64 denotes a sprocket hole for driving the supply tape 60 by a sprocket as will be described later. FIG. 9A shows a state in which the pressing plate 25a is not in contact with the pressing plate 25a, and naturally comes into contact with the spring 25b.

  The mounting roller 21 is sandwiched between cases 2k of the component supply device, and is provided with a roller recess 21a on the outer periphery thereof so as to be compatible with the both types of supply tape, and provided with a roller recess 21a. It is set as the structure which touches the carrier tape 61 in parts other than. On the lower side of the pressing plate 25a, the supply tape 60 is pressed with a stable pressing force, and an uneven portion 25d is provided so as to minimize the load of the sprocket described later when feeding the supply tape during normal electronic component suction operation. ing.

  When the supply reel (not shown) of the supply tape automatic mounting unit 20 is installed in the supply reel storage unit 54 of the component supply device cart 50 and one end of the supply tape 60 is inserted through the opening 25c, the insertion detection is performed. The sensor 26 detects the supply tape 60, and the supply device controller 80 drives the mounting roller drive motor 23. When the supply tape 60 is further inserted up to the mounting roller 21, the supply tape 60 is reliably delivered to the mounting side by the mounting roller 21 and the mounting pressing means 25. When the leading end of the supply tape 60 comes to the position of the insertion confirmation sensor 27, the mounting roller drive motor 23 is stopped according to the confirmation result.

  In the above embodiment, the supply tape 60 is pressed against the mounting roller 21 using the springs 25b provided at both ends of the pressing plate 25a. For example, the supply tape 60 is sandwiched between the mounting roller 21 and the pressing plate 25a in the mounting tape 60 to be mounted. The spring 25b is not necessarily required as long as the thickness of the portion in contact with is constant to a certain extent and a stable pressing force can be obtained by itself.

Moreover, in the said embodiment, although the mounting roller was used as a rotation part of the supply tape automatic mounting part 20, you may use a sprocket.
According to the present embodiment described above, the supply tape can be automatically and reliably mounted on the component supply device, so that the operating rate of the electronic component mounting device can be improved.
In addition, according to the present embodiment, the supply tape can be surely automatically attached to the component supply device, and a small component supply device can be provided.

  Second, the configuration and operation of the sprocket drive unit 30 in this embodiment will be described with reference to FIGS. 3 and 6. The sprocket drive unit 30 includes a sprocket 31 having a steep gear that drives a sprocket hole 64 provided in the supply tape 60, a worm wheel 32 provided concentrically with the worm gear 33, and a sprocket that drives the sprocket 31. A pressing means 40 with a cutter for pressing the supply tape 60 against a tape chute (moving path in which the supply tape 60 moves while sliding) 2s by a spring 35 so that the drive motor 34, the sprocket can reliably feed the supply tape 60, and It comprises a positioning correction sensor 36 for positioning the suction position. The positioning correction sensor 36 provided in front of the pressing means 40 with the cutter is used for imaging the LED 37 and the sprocket hole 64 that illuminate from above for detecting the position of the sprocket hole 64 provided on the side of the supply tape 60. It consists of an imaging camera.

  6A and 6B are diagrams showing the pressing means 40 with a cutter, in which FIG. 6A is a perspective view and FIG. 6B is a cross-sectional view. The pressing means with cutter 40 separates the pressing plate with cutter 46 and the cover tape 62 from the carrier tape 61 to press the supply tape 60 against the tape chute 2s (see FIG. 3 etc.), and a cover tape guide 42 which becomes a base at the time of cutting. The cover tape holding member 43 that guides the cover tape 62 after being detached, the cutter 41 that cuts the cover tape 62, and the cover tape 62 that is torn right and left so as not to interfere with the suction at the electronic component suction holes 45 The cover opening guide 44 guides the tape left and right. The pressing plate 46 has an elongated hole so that the supply tape 60 and the engagement portion of the sprocket 31 can be engaged. Further, the electronic part suction hole 45 is arranged at a position S immediately below the suction nozzle 17 shown in FIG.

  When the supply tape 60 comes to the pressing means 40 with a cutter, the cover tape 61 on the upper surface of the supply tape 60 is cut from the center to the left and right 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 on which the electronic component is adsorbed at the end of the pressing means 40 with the cutter, and the joined tape becomes a supplied tape 60U.

  According to the present embodiment of the sprocket drive unit 30, the pressing plate 46 is provided with a cutter, so that the cover tape of the supply tape and the carrier tape are fed together from the pressing plate 46 and collected together. Can be disposed of easily.

  Third, the configuration and operation of the supply tape insertion unit 70 will be described with reference to FIGS. In this embodiment, the supply tape insertion part 70 needs to have the following two functions. First, the supply tape inserting section 70 stably or reliably inserts the tip of the supply tape 60 delivered from the automatic supply tape mounting section 20A or 20B under the aforementioned pressing means 40 with a cutter to drive a sprocket. This is an insertion function for moving to the section 30. Second, the supply tape insertion portion 70 is a load reduction function that is necessary only when the supply tape is inserted, and reduces the load on the sprocket drive portion 30 when the electronic component is attracted.

  As shown in FIG. 3, the supply tape insertion portion 70 of this embodiment includes an insertion roller 71, an insertion roller drive motor 73 that is a rotational drive unit that drives the insertion roller 71 via a timing belt 72 and the like, and will be described later with reference to FIG. 8. It comprises an insertion portion tape guide pressing means 75. FIG. 7 (a) is an enlarged view showing the insertion roller 71A showing the first embodiment of the insertion roller 71, and FIG. 7 (b) is provided on the outer periphery of the insertion roller, and the sprocket hole 64 of the supply tape 60 is shown. FIG. 7C is a diagram showing the pushing force generated when the insertion roller engages with the supply tape 60. FIG.

  The insertion roller 71A includes a roller 71a provided on the outer periphery with a plurality of insertion engagement portions 74A provided at equal intervals corresponding to the pitch of the sprocket holes 64, a pulley 71b provided concentrically with the roller 71a, and a turning shaft 71c. . The insertion engagement portion 74A includes a spherical ball 74b that is an engagement body 74M that engages with the sprocket hole 64, a cylindrical movement space 74N in which the ball 74b moves, and a movement space formation body 74f that is fixed to the roller 71. A cylindrical body 74a and a spring 74c that pushes the ball 74b in the outer radial direction are formed. In FIG. 7A, three insertion engagement parts are shown, and the others are omitted. The same applies to FIGS. 8, 9A, and 10A described later.

  The outer tip 74as of the cylindrical body 74a has a diameter smaller than the diameter of the ball 74b. Due to the small diameter, the ball 74b is securely fixed to the cylindrical body 74a by the spring 74c when engaged with the sprocket hole 64, and the pushing force Fo can be surely given to the supply tape 60. Further, the small diameter also serves as a flying prevention means for preventing the ball 74b from flying outward. The strength of the spring is such that when the supply tape 60 is fed to the sprocket 31 by a roller in advance, the ball hits the outer tip 74as and is firmly supported, and after the supply tape 60 is fed to the sprocket 31, it is supplied by the sprocket 31. It is set so that the ball is lowered by being compressed so as not to interfere with the tape feeding.

  The tip of the supply tape 60 delivered from the automatic supply tape mounting portion 20A or 20B is moved to the insertion roller 71A by the mounting roller drive motor 23 or the like while the both sides of the carrier tape 61 shown in FIG. 5 slide on the tape chute 2s. Come on. Therefore, the control device 80 starts the insertion roller drive motor 73. The drive timing may be the same as that of the mounting roller drive motor 23, or may be after the mounting roller drive motor 23 has been driven, or after a certain time from when the insertion confirmation sensor 27 detects the supply tape 60.

  FIG. 8 is a view showing a state when the supply tape 60 comes to the insertion roller 71, and 75 is an insertion portion tape guide pressing means, which is constituted by a leaf spring in this embodiment. The leaf spring has a shape that gradually approaches the tape shooter 2s, contacts the insertion engagement portion 74, and then separates. Accordingly, the supply tape 60 first moves along the leaf spring 75, and then the supply tape 60 passes over the ball 74b while sliding on the ball 74b or rotating the ball 74b. Among them, the ball 74b is inserted into the sprocket hole 64 by the spring 74c and engaged. Since the insertion engagement portions 74 are provided at the same pitch as the sprocket holes 64, once the balls 74b are engaged with the sprocket holes 64, the balls 74b are subsequently engaged with the sprocket holes 64 one after another. FIG. 7 (c) shows the relationship between the acting force Fs from the ball 74b and the pushing force Fo in the running direction of the supply tape 60 at the time of the aforementioned engagement. The supply tape 60 causes the supply tape 60 to be sprocketed by this pushing force Fo. It moves in the direction of 31.

As a result, the supply tape insertion unit 70 can stably feed the supply tape 60 to the sprocket drive unit 30 while suppressing the vertical movement of the supply tape 60.
Then, the supply tape insertion section 70 reliably inserts the carrier tape 61 under the cover tape guide 42 of the cutter pressing means 40 shown in FIG. 6 by the pressing force Fo. Furthermore, the supply tape insertion portion 70 can move the supply tape 60 to the engagement portion between the sprocket 31 and the supply tape 60 by the pressing force overcoming the load of the cutter 41. At this time, the necessary pushing force in this example was about 200 g.

  As a result, the sprocket holes 64 of the supply tape 60 are securely engaged with the teeth of the sprocket 31, and the supply tape 60 can be fed by the rotation of the sprocket 31. Therefore, the feeding of the supply tape 60 thereafter is performed by the sprocket 31, and the component supply device 2 sucks the electronic components.

  When the sprocket 31 is driven during feeding of the supply tape during the electronic component suction operation described above, the insertion engagement portion 74 has the following load reduction function of the sprocket 31. First, at the time of engagement with the sprocket hole 64, the ball 74b rotates to reduce the load on the sprocket 31. Second, at the time of non-engagement with the sprocket hole 64, the spring 74c is contracted and the ball 74b is lowered by the sliding or rotation of the ball 74b with the supply tape 60 and by the pressing force of the radial supply tape 60. The load on the sprocket 31 is reduced. That is, the insertion engagement part 74 reduces the load on the sprocket 31 by reducing the load in the traveling direction of the supply tape 60 in both states.

The timing when the sprocket 31 is driven may be from the time when the positioning correction sensor 36 recognizes the supply tape, or may be after a certain time after the insertion roller 71A is driven.
Whether the sprocket hole 64 of the supply tape has engaged with the sprocket 31 is monitored by monitoring the movement of the sprocket hole 64 by the imaging camera 84, the load current of the sprocket drive motor motor 34, or simply after a certain period of time. Use a method such as judging. For example, in the monitoring by the imaging camera 84, it is determined that the engagement is not successful because the circular sprocket hole 64 is elliptical or the movement of the sprocket hole 64 is slow. Then, when the engagement is not successful, the insertion roller 71 or the sprocket 31 is moved back and forth for engagement.

As described above, according to the present embodiment, an insertion means for performing an insertion function is realized by turning the insertion engagement portion 74A engaged with the sprocket hole, and the insertion engagement portion 74A is arranged in the moving direction of the supply tape 60. A load reducing means that performs a load reducing function can be realized by the rotatable ball 74b that reduces the load on the sprocket 31 and the spring 74c that contracts.
Therefore, according to the present Example, the component supply apparatus which can insert a supply tape reliably in the sprocket drive part, especially the sprocket drive part 30 which has a cutter can be provided.
In addition, according to the present embodiment, it is possible to provide a component supply device having the supply tape insertion portion 70 with a reduced load for the sprocket drive unit when sucking the electronic component.

  FIG. 9 is a view showing a second embodiment 71B of the insertion roller 71. As shown in FIG. Components having the same function and structure as those of the first embodiment are denoted by the same reference numerals. FIG. 9 (a) is an enlarged view of the insertion roller 71B in FIG. 3, and FIG. 9 (b) shows an insertion engagement portion 74B provided on the outer periphery of the insertion roller and engaged with the sprocket hole 64 of the supply tape 60. FIG. FIG. 2C is a diagram showing the dimensional relationship of each part.

  As in the first embodiment, the insertion roller 71B includes a roller 71a having an insertion engagement portion 74B provided on the outer periphery, a pulley 71b provided concentrically with the roller 71a, and a turning shaft 71c. As shown in FIG. 9 (b), the insertion engagement part 74B is integrally or fixed to the outer periphery of the roller 71a to form a cylindrical movement space 74N in which the engagement body 74 moves, and the movement space 74N is sprocketed. A moving space forming body 74f provided at a pitch interval of the holes 64, a spring 74c having one end fixed to the roller 71a and the other end fixed to the disk 74e, and an engagement body 74M fixed to the disk and engaged with the sprocket hole 64. A tip portion is formed of a hemispherical semi-ball 74d.

  Further, the outer side 74fs of the moving space forming body 74f protrudes to the inner side of the moving space 74N, and its diameter Dfs is larger than the diameter Dd of the half ball 74d and smaller than the diameter De of the disk 74e. Furthermore, the space diameter Df of the moving space forming body 74f is larger than the diameter De of the disk 74e. That is, the relationship between these four diameters is expressed by equation (1).

Df>De>Dfs> Dd (1)
The function can be fulfilled as follows from the relationship of the expression (1). First, at the time of engagement with the sprocket hole 64, the disc 74e is securely fixed by the outer front end portion 74fs of the moving space forming body 74f, and the half ball 74d fixed to the disc is reliably pushed to the supply tape 60. Can be given.
Secondly, the outer front end portion 74fs of the moving space forming member also serves as a flying prevention means for preventing the disc 74e, that is, the half ball 74d from jumping outside.

Third, since the semi-ball 74d and the disc 74e can be shifted in the moving direction of the supply tape, the movement serves as a buffer and plays a role of a load reducing function. That is, when the sprocket 31 is driven, the insertion engagement portion 74B causes the half ball 74d to escape in the moving direction when engaged with the sprocket hole 64, and when the sprocket hole 64 is not engaged, the insertion engagement portion 74B The load on the sprocket 31 can be reduced by the reduction of the half ball 74d due to the rotation and the contraction of the spring 74c.
Further, fourthly, when the supply tape 60 is inserted, the semi-ball 74d has a degree of freedom to be displaced forward and backward in the moving direction of the supply tape 60, and therefore, there is an advantage that the sprocket hole 64 is easily engaged.
FIG. 10 is a view showing an insertion engagement portion 74C of the third embodiment 71C of the insertion roller 71. As shown in FIG. Components having the same structure and function as those in the first or second embodiment are denoted by the same reference numerals. Further, except for the insertion contracting part 74C, it is basically the same as the first and second embodiments.

  The insertion engagement part 74C is basically the same as in the second embodiment. The differences are the following two points. First, the space diameter Df of the cylindrical body 74f is substantially the same as the diameter De of the disk 74e, and the diameter Dfs of the outer front end portion 74fs of the cylindrical body 74f is substantially the same as the diameter Dd of the semi-ball 74d. It is. That is, the relationship is expressed by the equation (2).

Df≈De> Dfs≈Dd (2)
Second, in the pressing variable means, the spring having one end fixed to the roller 71 and the other end fixed to the disc 74e is a shape memory spring 74g made of a shape memory alloy. As for the storage method, the current is turned on at the time of insertion, the disk 74e is in contact with the outer tip 74fs (FIG. 10 (a)), the current is turned off at the time of electronic component adsorption, and the half ball 74d It is in a state that the tip of is below the tape chute. The ON / OFF selection is set to ON when the supply tape is used only when the supply tape is inserted, thereby saving power.

  The function can be achieved as follows from the relationship of the formula (2) and the shape memory spring. Of the three functions shown in the first to third aspects of the second embodiment, the first and second functions are the same in this embodiment. The role of the third load reduction function is different. When the electronic component is adsorbed, that is, when the sprocket 31 is driven, the half ball 74d is pulled from the tape chute, so that the load on the sprocket 31 can be eliminated at all.

The shape memory spring 74g can also be applied to the first embodiment. In addition, the moving space 74N of the present embodiment is formed by the moving space forming body 74f as in the second embodiment, but may be formed by the cylindrical body 74a as in the first embodiment.
In the second and third embodiments described above, the same effects as in the first embodiment can be obtained.

  In addition to the embodiment described above, there is a method of reducing the load on the sprocket 31 when the electronic component is attracted. For example, it is a method of reducing the driving force of a rotating means for rotating the insertion roller. More specifically, an electromagnetic clutch or a torque limiter for separating the driving force from the insertion roller drive motor 73 from the insertion roller is provided on the motor side or the insertion roller side. In the former case, the maximum load is a load for rotating the insertion roller, and in the latter case, the limit load is set. In such a case, the position of the insertion engagement portion 74 is set such that the distance between the engagement position of the insertion engagement portion 74 and the sprocket 31 is an integral multiple of the pitch of the sprocket holes 64. It is possible to establish a stable load by contracting.

Further, in order to insert the leading end of the supply tape 60 more reliably, the pressing means 25 used for the automatic supply tape mounting portion 20 may be provided to positively press the insertion roller. However, it is necessary to release the pressing force when the electronic component is attracted. For this purpose, for example, the spring 25b is made of a shape memory alloy, and the pressing force is turned ON / OFF by passing an electric current through the spring 25b.
Further, in the above embodiment, the shape of the engagement portion of the insertion engagement portion 74 is a sphere or a hemisphere, but it may be any shape as long as the diameter decreases toward the outside of the diameter.

  According to the embodiment of the supply tape insertion portion 70 described above, it is possible to provide a component supply apparatus that can reliably supply the supply tape to the sprocket that automatically attaches the supply tape to the electronic component and then sends it to the suction position.

Finally, an embodiment of the overall movement will be described with reference to FIG. In FIG. 11, movements other than the operation by the operator are basically performed by the supply device control unit 80.
First, the component supply apparatus 2 in which the supply tape 60 is not inserted is set in the component supply cart 50 (Step 1). Secondly, it is determined whether the supply tape 60 has already been set in the supply tape automatic loading unit 20 in the component supply device 2 and whether the supply tape 60 can be sucked, and the result is stored in the memory. For example, the determination is made by the insertion confirmation sensor 27 for the former and the imaging camera for the latter. If it is in the adsorbable state, go to Step 6, if the supply tape 60 is attached to both of the two systems, go to Step 4, and if only one, go to Step 3 (Step 2). Therefore, in the case of only one side, the supply tape 60 is automatically attached to the system of the supply tape automatic attachment unit 20 that is not attached, and the result is stored in the memory (Step 3).

Third, the supply tape insertion unit 70 is activated, and the tip of the supply tape 60 of the system is inserted into the sprocket drive unit having a cutter (Step 4).
Fourthly, it is confirmed whether a normal electronic component can be sucked onto the substrate. For example, as described in the first embodiment of the supply tape insertion portion 70, the movement of the sprocket hole 64 by the imaging camera 84 is monitored to determine whether or not the sprocket hole 64 of the supply tape has engaged with the sprocket 31. It is determined that the circular sprocket hole 64 is elliptical or the movement of the sprocket hole 64 is slow (Step 5). If the suction operation is possible, an insertion completion signal is transmitted to the control unit (not shown) of the main body 1 (Step 6), and then the electronic component suction operation is performed under the instruction of the main body 1 (Step 7). If the suction operation cannot be performed, the engagement operation is performed on the sprocket 31 or the like (Step 8).

Fifth, during the suction operation in Step 7, the end is detected by the insertion confirmation sensor 27 based on the presence or absence of the supply tape 60 (Step 9).
Sixth, when the end is detected, the remaining number of the A systems existing between the suction position S and the end are sucked. Of course, this step is not necessary unless an electronic component is accommodated between the suction position S and the terminal end (Step 10).

  Seventh, according to the contents of the memory stored in Step 2, the supply tape 60 is further automatically supplied to the system based on the presence / absence of the supply tape 60 of the other system, the number of suctions so far and the number of suctions necessary for the current workpiece. The next process is determined based on whether or not it is necessary to attach (Step 11). If the supply tape 60 is present and further automatic mounting is required, the supply tape 60 is present in Step 3, and if further automatic mounting is not required, the supply tape 60 is not present in Step 4 and further automatic mounting is not required. If so, the suction operation of the component supply device is completed.

  The operation flow method described above is an embodiment. For example, (1) Step 1 is not necessary if the dedicated automatic mounting machine or the supply tape 60 is manually mounted before the component supply cart 50 is set. Yes, (2) Step 5 and Step 8 are not necessary if the sprocket 31 is engaged with the sprocket hole 64 of the supply tape 60.

  According to the embodiment of the above-described operation flow, the supply tape can be surely automatically attached to the electronic component supply apparatus, and the electronic component can be reliably adsorbed to the adsorption nozzle 17 to improve the operating rate of the electronic component supply apparatus. Can provide a way.

  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.

1: Electronic component mounting device 2: Component supply device 2s: Tape chute 3: Component supply area 4: Electronic component 5: Board chute 11: Mounting head body 16: Mounting head 17: Suction nozzle 20: Automatic supply tape mounting unit 25: Mounting pressing means 25a: Pressing plate 26: Insertion detection sensor 27: Insertion confirmation sensor 28: Mounting portion driving means 30: Sprocket driving portion 31: Sprocket 34: Sprocket driving motor 40: Pressing means with cutter 41: Cutter
42: Cover tape guide 45: Electronic component suction hole
46: Pressing plate with cutter 50: Parts supply cart
60: Supply tape 64: Sprocket hole 70: Supply tape insertion part 71: Insertion roller 73: Insertion roller drive motor 74: Insertion engagement part 75: Insertion part tape pressing means 80: Supply device control part.

Claims (19)

A sprocket that houses electronic parts and rotates with a sprocket hole of a supply tape that moves on a tape chute and moves the supply tape to a suction position where the electronic parts are adsorbed from the outside, and the supply tape In a component supply apparatus having a sprocket drive unit comprising pressing means for pressing against a tape chute,
An insertion means provided with a roller having a plurality of insertion engagement portions provided on the outer periphery, which are provided in front of the sprocket drive portion, and a rotation drive means for rotating the insertion roller, and the sprocket drive And a supply tape insertion section provided with a load reduction means for reducing the load on the section.   The supply tape includes a carrier tape that houses the electronic component and a cover tape that covers the carrier tape, the pressing unit includes a cutting unit that cuts the cover tape, and the cut cover tape has the suction position. The component supply apparatus according to claim 1, further comprising a means for avoiding.   Provided in front of the insertion port, provided in front of the supply tape insertion portion, an insertion port for inserting the supply tape, a supply tape insertion detecting means for detecting that the supply tape has been inserted from the insertion port, and provided near the insertion port 3. The apparatus according to claim 1, further comprising a supply tape automatic mounting unit including mounting unit driving means for moving the supply tape to a predetermined position based on a result of the supply tape insertion detection unit. Parts supply device.   The insertion engagement portion forms an engagement body that engages with a sprocket hole, a movement space in which the engagement body moves, a movement space forming body that is fixed to the roller or integrally formed with the roller, and the engagement body is The component supply device according to any one of claims 1 to 3, further comprising: a spring that pushes in an outer radial direction of rotation; and a jump-out preventing unit that prevents the engagement body from jumping out from the moving space.   The component supply apparatus according to claim 4, wherein the moving space is cylindrical, and the engagement body is a sphere.   The moving space is cylindrical, and the engagement body has a hemispherical engagement portion that engages with the sprocket hole on one end side and a shape that is fixed to a circular plate on the other end side. 4. The component supply apparatus according to 4.   The cylindrical movement space is formed by a cylindrical body, and the pop-out preventing means is configured such that a diameter of an outer front end portion of the cylindrical body is smaller than a maximum diameter of the engagement body. The component supply apparatus according to 5 or 6.   The moving space forming body has a plurality of the cylindrical moving spaces, and the jump-out preventing means protrudes into the moving space outside the moving space forming body, and the diameter of the moving space of the protruding portion is The component supply device according to claim 5, wherein the component supply device is configured to be smaller than a maximum diameter of the joint body.   The component supply apparatus according to claim 5 or 6, wherein a diameter between the movements is substantially the same as a maximum diameter of the engagement body.   The component supply apparatus according to claim 5 or 6, wherein a diameter between the movements is larger than a maximum diameter of the engagement body.   6. The component supply apparatus according to claim 5, wherein the load reducing means is configured to make the sphere rotatable.   The component supply device according to claim 4, wherein the load reducing unit is configured to move the engagement body in a moving direction of the supply tape.   The component supply device according to claim 4, wherein the load reducing unit is a unit that forcibly contracts the spring.   The component supply device according to claim 4, wherein the load reducing unit is a driving force reducing unit that reduces a driving force of a rotating unit that rotates the insertion roller.   15. The component supply apparatus according to claim 14, wherein the driving force reducing means is provided with a clutch or a torque limiter on the rotating means. A pressing variable means for changing the pressing force for pressing the engagement body against the supply tape is provided in the insertion engagement section, and when the supply tape is fed during the electronic component adsorption operation by the sprocket driving section, the load reducing means is configured to apply the pressing force. The component supply apparatus according to claim 4, further comprising means for reducing the above.   17. The component supply apparatus according to claim 16, wherein the pressing variable means is a spring formed of a shape memory alloy.   An interface for completing insertion of the supply tape into the sprocket drive unit, transmitting the completed information to an electronic component mounting apparatus, or receiving a command signal from the electronic component mounting apparatus. The component supply apparatus according to any one of 1 to 17.   An electronic component mounting apparatus comprising the component supply device according to claim 18, wherein the mounting of the component supply device or the electronic component is controlled based on the completed information.

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