JP4352979B2 - Electronic component mounting equipment - Google Patents

Description

  The present invention relates to an electronic component mounting apparatus for mounting electronic components on a substrate.

  An electronic component mounting apparatus used for mounting an electronic component on a substrate includes a mounting head moving mechanism that moves a mounting head that holds the electronic component between a component supply unit and a substrate positioned by the substrate positioning unit. Yes. In the component mounting operation, the electronic component is taken out from the parts feeder set in the component supply unit by the mounting head, and the mounting head is moved to the substrate to transfer and mount the electronic component on the substrate. A biaxial linear motion mechanism is often used as the mounting head moving mechanism. The mounting head is moved in one direction by one axis, and the moving beam on which the mounting head is mounted is moved in the orthogonal direction by the other one axis.

By the way, there are various types and sizes of substrates and electronic components to be worked on by the electronic component mounting apparatus, and electronic component mounting apparatuses are required to have a function corresponding to various types according to the substrates and electronic components. As such a multi-variety type electronic component mounting device, the stroke of the mounting head moving mechanism is set according to the maximum size of the target work board or electronic component, and according to the target product type There is known one that ensures versatility by adjusting the movement range (see, for example, Patent Document 1).
JP-A-9-205299

  However, in the electronic component mounting apparatus shown in the above-mentioned patent document example, the size of the apparatus main body is determined corresponding to the assumed maximum product type, so the apparatus size must be increased, and there is a demand for a compact apparatus. It was to go against. For this reason, it is difficult for the mechanism unit used in such a general-purpose apparatus to be shared with a normal apparatus pursuing compactness, which has been a factor that hinders reduction in apparatus cost.

  Accordingly, an object of the present invention is to provide a compact and low-cost electronic component mounting apparatus while ensuring versatility for a wide variety of products.

An electronic component mounting apparatus according to the present invention is an electronic component mounting apparatus for mounting an electronic component taken out from a parts feeder on a substrate, and transports the substrate, a component supply unit to which a plurality of types of the parts feeder can be mounted, and A substrate positioning unit for positioning, a mounting head for holding the electronic component, a moving beam for moving the mounting head in the substrate transport direction, and a linear motor driven direct drive for moving the moving beam in a direction orthogonal to the substrate transport direction. And a linear movement mechanism comprising: a main body portion corresponding to a basic movement stroke of the moving beam; and a foot portion added to the main body portion and corresponding to an additional stroke of the moving beam. wherein the door, as well as attaching and detaching the main body portion and the Tsugiashi unit according to the type of the parts feeder and or substrate, wherein the main body portion, It consists of a linear scale held by a kale guide and a linear head arranged opposite to the linear scale, and the joint part is opposed to the linear scale held by the additional kale guide and the linear scale. A linear scale comprising the linear head arranged and corresponding to the stroke obtained by adding the basic moving stroke and the additional stroke is mounted across the scale guide of the main body and the additional scale guide of the joint. By doing so, the main body portion and the joint portion are added .

  According to the present invention, the linear motion drive linear motion mechanism of the moving beam that moves the mounting head is composed of a main body portion corresponding to the basic moving stroke of the moving beam and a joint portion that is added to the main body portion, By attaching and detaching the main body part and the extension part according to the type of the parts feeder and / or the board, it is possible to ensure versatility for a wide variety of products and to realize a compact and low-cost electronic component mounting apparatus.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 and 3 are plan views of an electronic component mounting apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view of the electronic component mounting apparatus according to an embodiment of the present invention, and FIG. 4 is an embodiment of the present invention. FIG. 5 is a sectional view of the linear motion mechanism of the electronic component mounting apparatus according to the embodiment of the present invention, and FIG. 6 is the electronic circuit according to the embodiment of the present invention. It is a partial side view of the guide mechanism of a component mounting apparatus.

  First, the structure of the electronic component mounting apparatus will be described with reference to FIGS. In FIG. 1, a conveyance path 2 is arranged in the X direction on a base 1 of an electronic component mounting apparatus. The transport path 2 transports the substrate 3 on which electronic components are mounted, and positions the substrate 3 at a mounting position set on the transport path 2. The transport path 2 is a substrate positioning unit that transports and positions the substrate 3.

  On both sides of the conveyance path 2, component supply units 4A and 4B in which a plurality of tape feeders 5 are arranged in parallel, and a mounting mechanism for taking out electronic components from these component supply units 4A and 4B and mounting them on the substrate 3 are arranged. Yes. A plurality of types of part feeders can be mounted on the component supply units 4A and 4B. In this embodiment, a tray feeder is mounted on the component supply unit 4A in addition to the tape feeder 5 as described later.

  The mounting mechanism will be described. A Y linear motion mechanism 6 and a guide rail 7 are disposed in the Y direction at the right end portion and the left end portion of the base 1, respectively. As shown in FIG. 2, the Y linear motion mechanism 6 and the guide rail 7 are provided on frames 16 and 22 disposed on the upper surface of the base 1 in the Y direction, respectively. The Y linear motion mechanism 6 is a linear motion mechanism driven by a linear motor as will be described later, and the linear motion mechanism moves the moving beams 8A and 8B guided at the left end by the guide rail 7 in the Y direction.

  Similarly, the moving beams 8A and 8B incorporate an X linear motion mechanism driven by a linear motor, and the mounting heads 9A and 9B are moved in the X direction (substrate transport direction) by the X linear motion mechanism. Therefore, the electronic component mounting apparatus includes a mounting head moving mechanism including a moving beam that moves the mounting head in the substrate transport direction and a linear motor-driven linear motion mechanism that moves the moving beam in a direction orthogonal to the substrate transport direction. It becomes the composition.

  As shown in FIG. 2, the mounting heads 9A and 9B are multi-type mounting heads including a plurality of unit mounting heads 9a, and hold electronic components by suction nozzles 9b provided in the unit mounting heads 9a. The mounting heads 9A and 9B are provided with a substrate recognition camera 9c that moves integrally. The substrate recognition camera 9c moves on the substrate 3 together with the mounting heads 9A and 9B to recognize the position.

  By driving the Y linear movement mechanism 6 and the X linear movement mechanism of the moving beams 8A and 8B, the mounting heads 9A and 9B move in the XY direction, whereby electronic components are transferred from the tape feeder 5 of the component supply units 4A and 4B. Pick up and transfer to substrate 3. A line camera 10 and a nozzle stocker 11 are disposed between the component supply units 4A and 4B and the transport path 2. When the mounting heads 9A and 9B that have taken out the electronic components from the component supply unit 4 pass above the line camera 10, the electronic components held by the mounting heads 9A and 9B are recognized. The nozzle stocker 11 stores the suction nozzles 9b mounted on the unit mounting heads 9a for each type of electronic component, and the mounting heads 9A and 9B access the nozzle stocker 11 so that the suction nozzles 9b can be replaced. Done automatically.

The configuration of the linear motor of the Y linear movement mechanism 6 will be described. As shown in FIG. 2, three frame members 15 a, 15 b, and 15 c are formed in the Y direction on the upper surface of the frame 16 so as to form a U-shape. Magnet members 14 constituting a stator of the linear motor are mounted on the lower surface side of the frame 15b and the upper surface of the frame 15c so as to face each other in a horizontal posture.

  A vertical moving plate 12 is coupled to the right ends of the moving beams 8A and 8B, and a movable element 13, a slider 17 and a linear head 19 are fixed to the outer side surface of the moving plate 12. On the inner side surface of the base frame 16, a scale guide 21 that holds the guide rail 18 and the linear scale 20 is disposed in the Y direction. The mover 13 is fitted between the two magnet members 14 facing each other, and the slider 17 is fitted to the guide rail 18 so as to be slidable in the Y direction. The linear head 19 is located at a position facing the linear scale 20 held by the scale guide 21 at a predetermined interval, and the linear head 19 detects a relative position with respect to the linear scale 20.

  Next, a configuration in the case where a tray feeder is mounted in place of the tape feeder 5 in the component supply unit 4A will be described. As shown in FIG. 3, a tray feeder 24 is mounted on the component supply unit 4A. The tray feeder 24 supplies the tray 25 holding the electronic components in a grid arrangement to a position where the mounting head 9A can take out the electronic components.

  Here, when the electronic component is taken out from the component tray 25, the moving beam 8A is moved in the Y direction beyond the basic movement stroke S in the Y direction in the normal state (when the tape feeder 5 is targeted) shown in FIG. It is necessary to let For this reason, in the present embodiment, when the tray feeder 24 is mounted on the component supply unit 4A, the necessary movement stroke is satisfied by adding the joint portion to the Y linear motion mechanism 6 by the additional stroke S1. Like to do.

  That is, when the tray feeder 24 is mounted on the component supply unit 4A, an additional linear motion unit 6a as a joint portion is added to the tip of the Y linear motion mechanism 6 as shown in FIG. 5A shows an AA section of the Y linear motion mechanism 6, and FIG. 5B shows a BB section of the additional linear motion unit 6a. As shown in FIGS. 5 (a) and 5 (b), the additional linear motion unit 6a has an additional cross section having substantially the same cross section as the combined cross section of the base frame 16, the vertical frame 15a, the horizontal frame 15b, and the horizontal frame 15c. The frame 23 is mainly used.

  The additional magnet member 14 a, the additional guide rail 18 a, and the additional scale guide 21 a are attached to the additional frame 23 corresponding to the positions of the magnet member 14, the guide rail 18, and the scale guide 21. Note that the additional frame 23 does not need to be provided integrally with the same member, and may be divided into a plurality of members as appropriate.

  Then, the additional frame 23 is fixedly fastened to the base frame 16 and the vertical frame 15a by fastening means such as bolts, so that the additional linear motion unit 6a is added to the Y linear motion mechanism 6, whereby the magnet member 14 and the guide rail 18 are connected. The scale guide 21 is extended by an additional stroke S1.

  Here, the additional magnet member 14a and the additional guide rail 18a can be added to each other by abutting against the end surfaces of the magnet member 14 and the guide rail 18 after being cut to the required dimensions. Therefore, since it is impossible to add a new one, the new linear scale 20 corresponding to the stroke of S + S1 is mounted over the scale guide 21 and the additional scale guide 21a.

FIG. 6 shows an extension portion of the guide rail 7 that supports and guides the left end portion of the moving beam 8A. That is, a case in which an add-on unit is prepared in which an additional guide rail 7a having a length corresponding to the additional stroke S1 is attached to the additional frame 26 having the same cross section as the base frame 22 shown in FIG. In this case, the additional frame 26 is similarly fixed to the end surface of the base frame 22 by a fixing fastening means such as a bolt.

  That is, the linear motion mechanism described above includes a Y linear motion mechanism 6 that is a main body portion corresponding to the basic movement stroke S of the moving beam 8 and an additional linear motion unit 6a that is a joint portion that is added to the main body portion. It has a configuration. When the type of parts feeder or the type of substrate is changed according to the production type, the additional linear motion unit 6a is appropriately attached to or detached from the Y linear motion mechanism 6 according to these types.

  By adopting such a configuration, it is possible to change the stroke of the mounting head moving mechanism in accordance with the type of part feeder that supplies the work target substrate and the electronic component in the multi-component electronic component mounting apparatus. As a result, the versatility for multi-product types can be increased without increasing the device size by setting the basic movement stroke to a size that can be assumed in advance for the maximum product type, as in the conventional multi-product type. In addition to ensuring, a compact and low-cost electronic component mounting apparatus can be realized.

  The electronic component mounting apparatus of the present invention has the effect of ensuring versatility for a wide variety of products and realizing a compact and low-cost electronic component mounting apparatus, and is an electronic device driven by a linear motor. This is useful for a component mounting apparatus.

The top view of the electronic component mounting apparatus of one embodiment of this invention Sectional drawing of the electronic component mounting apparatus of one embodiment of this invention The top view of the electronic component mounting apparatus of one embodiment of this invention The partial side view of the linear motion mechanism of the electronic component mounting apparatus of one embodiment of this invention Sectional drawing of the linear motion mechanism of the electronic component mounting apparatus of one embodiment of this invention The partial side view of the guide mechanism of the electronic component mounting apparatus of one embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic component mounting apparatus 2 Conveyance path 3 Board | substrate 4A, 4B Component supply part 5 Tape feeder 6 Y linear motion mechanism 6a Additional linear motion unit 7 Guide rail 7a Additional guide rail 8A, 8B Moving beam 9A, 9B Mounting head

Claims (1)

An electronic component mounting apparatus for mounting an electronic component taken out from a parts feeder on a substrate, a component supply unit to which a plurality of types of the part feeders can be mounted, a substrate positioning unit for transporting and positioning the substrate, and the electronic component And a mounting head moving mechanism comprising a moving beam for moving the mounting head in the substrate transport direction and a linear motor-driven linear motion mechanism for moving the moving beam in a direction orthogonal to the substrate transport direction. Prepared,
The linear motion mechanism includes a main body portion corresponding to a basic movement stroke of the moving beam and a joint portion added to the main body portion and corresponding to an additional stroke of the moving beam, and the type of the parts feeder and / or the substrate Depending on the attachment and detachment of the body part and the joint part ,
The main body portion is composed of a linear scale held by a scale guide and a linear head disposed to face the linear scale.
The joint portion is composed of a linear scale held by an additional scale guide, and the linear head disposed to face the linear scale.
A linear scale corresponding to a stroke obtained by combining the basic movement stroke and the additional stroke is mounted on the scale guide of the main body portion and the additional scale guide of the joint portion so as to be mounted. An electronic component mounting apparatus characterized in that a part is added .

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