JP2013219240A - Component mounting device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component mounting device and method capable of achieving movement control of a mounting head with high accuracy in a simple arrangement configuration.SOLUTION: A configuration is adopted in which both ends of an X-axis beam for supporting a mounting head is supported by an X-axis beam support disposed at a lower side of the X-axis beam, and a Y-axis driving part supported by a Y-axis driving part support formed separately from the X-axis beam support and disposed at an upper part side of the X-axis beam applies driving force in a Y-axis direction to a central top part of the X-axis beam. This reduces a transmission amount to the Y-axis driving part support of exciting force generated by movement of the mounting head and the X-axis beam, and the accuracy of the movement control of the mounting head is improved.

Description

  The present invention relates to a component mounting apparatus and method for mounting components on a board using a mounting head supported by an X-axis beam.

  Conventionally, devices of various configurations are known as this type of component mounting device. For example, the component mounting apparatus of Patent Document 1 employs a configuration in which a mounting head and an X-axis beam are supported by a ceiling frame. Specifically, the ceiling frame is movable in the Y-axis direction via a linear motion guide mechanism extending in the Y-axis direction at both upper ends of the X-axis beam that supports the mounting head so as to be movable in the X-axis direction. I support it. The ceiling frame is provided with a Y-axis drive unit that moves the X-axis beam in the Y-axis direction. By moving the X-axis beam in the Y-axis direction by the Y-axis drive unit and moving the mounting head in the X-axis direction by the X-axis beam, the mounting head is moved in the X-axis direction and the Y-axis direction.

JP 2011-54605 A

  The component mounting apparatus of Patent Document 1 employs a configuration in which an X-axis beam that supports a mounting head is supported by a ceiling frame located above the X-axis beam. Therefore, the excitation force accompanying the movement of the mounting head and the movement of the X-axis beam is transmitted to the ceiling frame. Moreover, since the ceiling frame is located away from the base of the component mounting apparatus, the amount of vibration due to the excitation force tends to increase. Therefore, it is difficult to control the movement of the mounting head with high accuracy, and it is also difficult to increase the moving speed of the mounting head.

  In order to suppress the vibration of the ceiling frame, when the rigidity of the ceiling frame is increased, the ceiling frame and the members that support it are increased in size, so that the size of the component mounting apparatus and the arrangement of each component are increased. May be complicated.

  Accordingly, an object of the present invention is to provide a component mounting apparatus and method capable of realizing mounting head movement control with high accuracy with a simple arrangement configuration.

  In order to achieve the above object, the present invention is configured as follows.

  According to the first aspect of the present invention, the component is moved onto the substrate by the mounting head by moving the mounting head along the X-axis direction and the Y-axis direction that are orthogonal to each other along the surface of the substrate placed on the substrate stage. In the component mounting apparatus that mounts the X-axis beam, the X-axis beam that is movably supported in the X-axis direction and is disposed below the X-axis beam, and the X-axis beam is movable in the Y-axis direction. An X-axis beam support that supports both ends of the X-axis, a Y-axis drive unit that applies a driving force in the Y-axis direction to the center upper portion of the X-axis beam, and moves the X-axis beam in the Y-axis direction; A Y-axis drive unit support that supports the Y-axis drive unit above the beam and is formed separately from the X-axis beam support and has higher rigidity in the Y-axis direction than the X-axis direction, and a substrate In addition to supporting the stage, the X-axis beam support and And a base for supporting the Y-axis drive section support, to provide a component mounting apparatus.

  According to the second aspect of the present invention, the X-axis beam support body supports both ends of the X-axis beam from below or from the side so that the X-axis beam can move in the Y-axis direction. A component mounting apparatus is provided.

  According to the third aspect of the present invention, the Y-axis drive unit support is configured by a monocoque frame in which a pair of side walls and a ceiling wall facing each other in the X-axis direction are integrally formed, and the ceiling wall has Y The component mounting apparatus according to the first aspect or the second aspect is provided, in which the shaft driving unit is fixed and the lower portions of the pair of side walls are fixed to the base.

  According to the fourth aspect of the present invention, the monocoque frame is opened in the Y-axis direction, and component supply parts that supply components to the mounting head are arranged at one or both ends of the base in the Y-axis direction. A component mounting apparatus according to a third aspect is provided.

  According to the fifth aspect of the present invention, the Y-axis driving unit applies a driving force in the Y-axis direction in a non-contact manner to the central upper portion of the X-axis beam using a linear motor. A component mounting apparatus according to any one of the above is provided.

  According to the sixth aspect of the present invention, the Y-axis drive unit includes a ball screw extending in the Y-axis direction, a ball nut screwed to the ball screw, a drive motor that rotationally drives the ball screw, and the ball nut as the X-axis. A slide mechanism that engages a ball nut at the center upper part of the X-axis beam so that it can slide in the direction of movement, and suppresses vibration transmission in the X-axis direction from the X-axis beam to the Y-axis drive support by the slide mechanism A component mounting apparatus according to any one of the first to fifth aspects is provided.

  According to the seventh aspect of the present invention, the X-axis beam support is configured so that the X-axis beam can be moved in the Y-axis direction via the linear motion guide mechanism extending in the Y-axis direction. The component mounting apparatus according to any one of the first to sixth aspects, which is supported from the side or the side, is provided.

  According to the eighth aspect of the present invention, the mounting head is moved along the surface of the substrate placed on the substrate stage and perpendicular to each other in the X-axis direction and the Y-axis direction, and the component is moved onto the substrate by the mounting head. A component mounting method for mounting the X-axis beam supporting the mounting head movably in the X-axis direction while supporting both ends by an X-axis beam support disposed below the X-axis beam, From the Y-axis drive unit supported by the Y-axis drive unit support formed separately from the X-axis beam support above the X-axis beam, in the Y-axis direction with respect to the upper center of the X-axis beam The driving force is applied to move the X-axis beam in the Y-axis direction, the mounting head is moved in the X-axis direction and the Y-axis direction, and the X-axis beam support and the Y-axis drive unit support are supported. On the substrate placed on the substrate stage supported by the base And performing component mounting by the mounting head and provides a component mounting method.

  According to the present invention, both ends of the X-axis beam that supports the mounting head are supported by the X-axis beam support disposed below the X-axis beam, and formed separately from the X-axis beam support. In addition, the Y-axis drive unit supported by the Y-axis drive unit support disposed above the X-axis beam applies a driving force in the Y-axis direction to the upper center portion of the X-axis beam. Is adopted. Thereby, the amount of transmission of the excitation force generated by the movement of the mounting head and the X-axis beam to the Y-axis drive unit support can be reduced. Therefore, the Y-axis drive unit support body only needs to be able to ensure rigidity against the force in the Y-axis direction transmitted from the X-axis beam via the Y-axis drive unit. Therefore, in the component mounting apparatus, the movement control of the mounting head can be realized with high accuracy with a simple arrangement.

1 is an external perspective view of a component mounting apparatus according to an embodiment of the present invention. AA sectional view taken along line AA in the component mounting apparatus of FIG. The perspective view of the ceiling structure of the component mounting apparatus of FIG. The perspective view of the ceiling structure concerning the modification of this invention The perspective view of the Y-axis drive part support body concerning the modification of this invention The perspective view of the Y-axis drive part concerning the modification of this invention Sectional drawing of the component mounting apparatus concerning the modification of this invention Sectional drawing of the support structure of the X-axis beam concerning the modification of this invention Sectional drawing of the support structure of the X-axis beam concerning the modification of this invention

  Embodiments according to the present invention will be described below in detail with reference to the drawings.

  FIG. 1 shows an external perspective view of a component mounting apparatus 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA in the component mounting apparatus 1 of FIG. Hereinafter, the configuration of the component mounting apparatus 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. In the following description, the X-axis direction and the Y-axis direction are directions along the surface of the substrate (horizontal direction) and orthogonal to each other, and the Z-axis direction is orthogonal to the X-axis direction and the Y-axis direction. Direction (vertical direction).

  The component mounting apparatus 1 includes a mounting head 2, a substrate stage 4 on which a substrate (circuit forming body) 3 on which components are mounted, and an X-axis beam 5 that supports the mounting head 2 so as to be movable in the X-axis direction. And a Y-axis drive unit 6 that moves the X-axis beam 5 in the Y-axis direction. Further, the component mounting apparatus 1 includes an X-axis beam support 8 that supports the X-axis beam 5 so as to be movable in the Y-axis direction, and a ceiling structure (Y-axis drive unit support) 9 that supports the Y-axis drive unit 6. And a base 10 for supporting the substrate stage 4 and supporting the X-axis beam support 8 and the ceiling structure 9. In FIG. 1, the arrangement configuration of each component is illustrated in a state where the ceiling structure 9 covering the upper part of the component mounting apparatus 1 is transmitted.

  The mounting head 2 includes a plurality of suction nozzles 7 for sucking and holding components arranged in the X-axis direction, for example, and the components sucked and held by the respective suction nozzles 7 are placed on the substrate stage 4. Mounting on a predetermined mounting position on the substrate 3.

  The X-axis beam 5 is formed as a rigid member extending in the X-axis direction, and has a function of supporting the mounting head 2 and moving the mounting head 2 in the X-axis direction. Both ends 5a (both ends) of the X-axis beam 5 in the X-axis direction are supported by respective X-axis beam supports 8 from below. The X-axis beam support 8 is formed so as to protrude above the upper surface of the base 10 in the vicinity of both end edges in the X-axis direction of the base 10 and to extend along the Y-axis direction. Each X-axis beam support 8 may be formed integrally with the base 10 or formed separately from the base 10 and fixed to the base 10. It may be the case.

  A linear motion rail 11 extending in the Y-axis direction is disposed on the upper surface of each X-axis beam support 8, and is engaged with the linear motion rail 11 at the lower part of both ends 5 a of the X-axis beam 5. The linear motion block 12 is fixed. Since the linear motion block 12 is slidable along the linear motion rail 11, the X-axis beam 5 is movable in the Y-axis direction while being supported by the respective X-axis beam supports 8. The linear motion guide mechanism is constituted by the linear motion rail and the linear motion block 12.

  In the present embodiment, a linear motor is employed as the Y-axis drive unit 6. A movable element 6a in the linear motor of the Y-axis drive unit 6 is provided at the center upper part (upper part of the center area) of the X-axis beam 5 which is an area between both ends supported by the X-axis beam support 8 in the X-axis direction. Is fixed. The linear motor stator 6 b extends in the Y-axis direction and is supported by a ceiling structure 9 disposed above the X-axis beam 5. The stator 6b of the linear motor has a substantially concave cross section, and the movable element 6a is disposed inside the concave cross section, so that both surfaces do not contact between the inner surface of the concave cross section and the surface of the movable element 6a. A gap is secured. The Y-axis drive unit 6 applies a magnetic force generated between the mover 6a and the stator 6b arranged in non-contact with each other to the X-axis beam 5 as a force for driving the X-axis beam 5 in the Y-axis direction. .

  The ceiling structure 9 is an X-axis beam as a monocoque frame in which a ceiling wall 9a formed along the XY plane and a pair of opposing side walls 9b formed along the YZ plane are integrally formed. The support 8 is formed separately. The ceiling structure 9 having such a monocoque structure is formed, for example, by pressing a single metal plate. The ceiling structure 9 has a generally U-shaped cross-sectional shape opened in the Y-axis direction.

  A stator 6b of the Y-axis drive unit 6 is fixed and supported on the lower center surface of the ceiling wall 9a of the ceiling structure 9. The lower portions 9c of the pair of side walls 9b of the ceiling structure 9 are fixed to the side surfaces of the base 10 so that the ceiling structure 9 is supported by the base 10. The ceiling structure 9 is formed with a thickness of about 4 to 6 mm, for example, while having higher rigidity in the Y-axis direction than in the X-axis direction due to its structural and shape characteristics.

  The X-axis beam support body 8 and the ceiling structure 9 are different in the object to be supported from each other, and the directions of the parts supported by the object are different, and the excitation force generated on one side is directed to the other side. Are supported individually by the base 10 so that they are not easily transmitted. However, in order to supplement the support of the ceiling structure 9 by the base 10, the side wall 9 b of the ceiling structure 9 may be supplementarily supported by the X-axis beam support 8. In the present embodiment, the X-axis beam support 8 that supports the X-axis beam 5 so as to be movable in the Y-axis direction is disposed substantially below the X-axis beam 5, and A supporting ceiling structure (that is, a Y-axis drive unit support) 9 is disposed substantially above the X-axis beam 5, and the X-axis beam support 8 and the ceiling structure 9 are separately provided on the base 10. It is supported by.

  In the base 10, component supply units 13 that supply components to the mounting head 2 are arranged at both ends in the Y-axis direction where the ceiling structure 9 is opened. In addition, the case where the component supply part 13 is arrange | positioned only at the one end of the Y-axis direction of the base 10 may be sufficient.

  On the pair of side walls 9 b of the ceiling structure 9, a carry-in / out port 9 d for carrying the substrate 3 into and out of the substrate stage 4 is formed. For example, when a plurality of component mounting apparatuses 1 according to the present embodiment are connected in the X-axis direction, the board 3 is loaded into another adjacent component mounting apparatus through the loading / unloading port 9d of the side wall 9b of the ceiling structure 9. Can be issued. In addition, since such a carrying-in / out opening 9d is formed to a size that allows the board 3 on which components are mounted to pass through, the rigidity of the ceiling structure 9 can be ensured.

  The X-axis beam support 8 is provided with a position detection sensor 14 that detects the movement position of the X-axis beam 5 in the Y-axis direction. The position detection sensor 14 includes, for example, a linear scale 14a fixed to the X-axis beam support 8 and a scale head 14b fixed to the linear motion block 12 so as to face the linear scale 14a. Note that the position detection sensors 14 may be provided on the respective X-axis beam supports 8 so as to perform highly accurate position detection, but at least one X-axis beam support 8 is provided with the position detection sensors 14. Just do it. Further, a sensor other than the linear scale may be employed as the position detection sensor 14.

  A method of performing a component mounting operation on the board 3 with such a component mounting apparatus 1 will be described.

  First, in the component mounting apparatus 1, the substrate 3 is carried in through one loading / unloading port 9 d of the ceiling structure 9, and the substrate 3 is placed on the substrate stage 4.

  Next, the mounting head 2 is moved above the one component supply unit 13. Specifically, the magnetic force generated by the Y-axis drive unit 6 is applied to the center upper portion of the X-axis beam 5 as a driving force in the Y-axis direction, and the X-axis beam 5 with both ends 5a supported is linearly guided. The X-axis beam 5 is moved in the Y-axis direction so as to approach the component supply unit 13 while being guided in the Y-axis direction by the mechanisms 11 and 12. At the same time, the mounting head 2 is moved in the X-axis direction by the X-axis beam 5, and the respective suction nozzles 7 are aligned with the component removal positions of the component supply unit 13, and the components are held by the suction nozzle 7.

  Thereafter, the mounting head 2 is moved in the X-axis direction and the Y-axis direction in the same manner, the mounting head 2 is moved above the substrate 3 placed on the substrate stage 4, and is moved to a predetermined mounting position on the substrate 3. The components held by the suction nozzle 7 are mounted.

  The movement of the mounting head 2 between the upper side of the substrate stage 4 and the upper side of the component supply unit 13 is repeated, and a plurality of components are mounted on the substrate 3.

  Thereafter, the substrate 3 on the substrate stage 4 is unloaded from the component mounting apparatus 1 through the other loading / unloading port 9d.

  In the component mounting apparatus 1 according to the present embodiment, both ends 5a of the X-axis beam 5 that supports the mounting head 2 are supported by the X-axis beam support 8 from below and separated from the X-axis beam support 8. The Y-axis driving unit 6 is formed by the Y-axis driving unit 6 that is formed and supported by the ceiling structure 9 disposed above the X-axis beam 5 so as to apply a driving force in the Y-axis direction to the central upper portion of the X-axis beam 5. Is adopted. That is, an X-axis beam support 8 that supports the mounting head 2 and the X-axis beam 5, and a ceiling structure 9 that supports a Y-axis drive unit 6 that applies a drive force in the Y-axis direction to the X-axis beam 5; Are configured separately from each other, and each is individually supported by the base 10. As a result, the amount of excitation force generated by the movement of the mounting head 2 and the X-axis beam 5 can be reduced through the ceiling structure 9 to the Y-axis drive unit 6. Further, since the X-axis beam 5 is supported from the lower side of both ends 5a, the excitation point can be positioned at a low position, which is also effective from the viewpoint of vibration suppression. Therefore, in the component mounting apparatus 1, it is possible to increase the accuracy of movement control while increasing the movement speed of the mounting head 2.

  The ceiling structure 9 is separated from the X-axis beam support 8, and a linear motor is employed as the Y-axis drive unit 6 so that the movable element 6a and the stator 6b are not in contact with each other. . Therefore, the force in the X-axis direction generated when the mounting head 2 is moved in the X-axis direction and the Y-axis direction is not easily transmitted to the ceiling structure 9, and accompanying the movement of the X-axis beam 5 in the Y-axis direction. Thus, only the force in the Y-axis direction generated is transmitted to the ceiling structure 9 through the Y-axis drive unit 6. Therefore, the ceiling structure 9 can be designed to have higher rigidity in the Y-axis direction than in the X-axis direction, and the configuration of the ceiling structure 9 can be simplified.

  In particular, by making the ceiling structure 9 a monocoque frame in which the ceiling wall 9a and a pair of side walls 9b having a YZ plane are integrally formed, it is lightweight and simple while having high rigidity in the Y-axis direction. A frame configuration can be realized. In addition, in such a monocoque frame, by adopting a configuration that is supported by the base 10 at the lower portion 9c of the side wall 9b, it is possible to secure a space that can be effectively utilized on the upper surface of the base 10. In addition, an appropriate arrangement configuration of each component can be realized, and the component mounting apparatus can be downsized.

  In the structure in which the component supply units 13 are arranged at both ends in the Y-axis direction of the base 10 using the openings formed in the Y-axis direction in the ceiling structure 9 that adopts the monocoque structure, the components above the substrate stage 4 and the components are arranged. The moment generated by the movement of the mounting head 2 between the supply unit 13 and the movement in the Y-axis direction is larger than that caused by the movement in the X-axis direction. As described above, since the rigidity in the Y-axis direction is higher than that in the X-axis direction in the ceiling structure 9, movement control by the Y-axis drive unit 6 is realized with high positional accuracy against such a moment. it can.

  Further, since the Y-axis drive unit 6 applies a driving force to the upper center portion of the X-axis beam 5 supported by the X-axis beam support 8 from the lower side from the lower side, a single drive source provides good balance. The X-axis beam 5 can be moved, which can contribute to improving the accuracy of movement control.

  In addition, since the position detection sensor 14 for detecting the movement position of the X-axis beam 5 in the Y-axis direction is disposed on the X-axis beam support 8 that is a rigid body that supports the X-axis beam 5, The moving position of the beam 5 can be detected with high accuracy.

  Therefore, in the component mounting apparatus 1, the movement control of the mounting head 2 can be realized with high accuracy with a simple arrangement.

  Next, a modification of the present embodiment will be described below.

  In the above description, as shown in FIG. 3, the ceiling structure 9 is formed as a monocoque frame and the Y-axis drive unit 6 is supported as an example. Various configurations may be adopted.

  For example, as shown in FIG. 4, a plurality of frame members 19a may be used as aggregates to constitute a ceiling structure 19 that is not a monocoque structure. As described above, the ceiling structure 19 that supports the Y-axis drive unit 6 that generates a driving force in the Y-axis direction only needs to have rigidity in at least the Y-axis direction, and is a relatively simple and lightweight bone. The ceiling structure 19 can be configured by combining a plurality of frame members 19a in the material configuration.

  Further, as shown in FIG. 5, a frame configuration in which the Y-axis drive unit 6 is cantilevered at one end in the Y-axis direction may be adopted as the Y-axis drive unit support 29. Even in such a cantilever configuration in the Y-axis direction, rigidity in the Y-axis direction can be ensured and a simple frame configuration can be realized.

  In the component mounting apparatus 1 of FIG. 1 and FIG. 2, the example in which a linear motor that applies a driving force to the X-axis beam 5 in a non-contact manner is employed as the Y-axis drive unit 6 has been described. Various other configurations can be adopted.

  For example, a ball screw mechanism is employed in the Y-axis drive unit 26 shown in FIG. Specifically, the Y-axis drive unit 26 rotates the ball screw 21 that extends in the Y-axis direction, the ball nut 22 that is screwed into the ball screw 21 and disposed at the upper center of the X-axis beam 5, and the ball screw 21. And a drive motor 23 for driving. The ball screw 21 and the drive motor 23 are supported by the ceiling structure 9.

  Further, the Y-axis drive unit 26 includes a slide mechanism 24 that engages the ball nut 22 at the upper center of the X-axis beam 5 so that the ball nut 22 can be slid in the X-axis direction. Unlike a linear motor, such a ball screw mechanism is not a non-contact driving force transmission mechanism (for example, it can also be referred to as “vibration transmission suppression means”), but such a slide mechanism 24 is provided. As a result, vibration transmission in the X-axis direction from the X-axis beam 5 to the Y-axis drive unit 26 and the ceiling structure 9 can be suppressed by vibration transmission suppressing means such as the slide mechanism 24.

  In the above description, as shown in FIG. 2, the X-axis beam 5 has both ends 5a in the X-axis direction supported by the X-axis beam support 8 from the lower side as an example. The configuration in which the X-axis beam 5 is supported by the support 8 is not limited to the configuration in which the X-axis beam 5 is supported from below.

  For example, FIG. 7 shows a cross-sectional view of a component mounting apparatus 101 according to a modification of the present embodiment. As shown in FIG. 7, the component mounting apparatus 101 according to the modification employs a configuration in which both ends 5 a of the X-axis beam 5 in the X-axis direction are supported by the X-axis beam support 108 from the side rather than the lower side. ing.

  Specifically, linear motion rails 11 extending in the Y-axis direction are arranged on the upper side surfaces of the respective X-axis beam supports 108, and the linear rails 11 are arranged on the sides of both ends 5 a of the X-axis beam 5. A linear motion block 12 that engages with the motion rail 11 is fixed. Since the linear motion block 12 is slidable along the linear motion rail 11, the X-axis beam 5 is movable in the Y-axis direction while being supported by the respective X-axis beam supports 108. The linear motion guide mechanism is constituted by the linear motion rail and the linear motion block 12.

  In this way, even if both ends 5a of the X-axis beam 5 in the X-axis direction are supported by the X-axis beam support 108 from the side, the X-axis beam support 108 and the ceiling structure 9 are separated from each other. By constructing the body and individually supporting it on the base 10, the exciting force generated by the movement of the mounting head 2 and the X-axis beam 5 is transmitted through the ceiling structure 9 to the Y-axis drive unit 6. The amount transmitted to can be reduced. Therefore, in the component mounting apparatus 101, it is possible to increase the accuracy of movement control while increasing the movement speed of the mounting head 2.

  Further, as shown in FIG. 8, a configuration in which both ends 205a of the X-axis beam 205 are supported by an X-axis beam support 208 from an obliquely lower side (or an oblique side) may be employed. Thus, in the support structure from the obliquely lower side, the end face of the X-axis beam 205 and the upper surface of the X-axis beam support 208 are inclined surfaces, and the linear motion rail 11, the linear motion block 12, and linear It is possible to arrange the scale 14a and the like.

  Further, as shown in FIG. 9, the upper part of the X-axis beam support 308 is formed so as to wrap around the upper side of the X-axis beam 5, and both ends 5a of the X-axis beam 5 in the X-axis direction are X-axis from the upper side. A configuration supported by the beam support 308 may be adopted.

  As described above, various configurations can be applied as the configuration in which both ends of the X-axis beam in the X-axis direction are supported by the X-axis beam support. In particular, as shown in FIG. 2, in the configuration in which both ends 5a in the X-axis direction of the X-axis beam 5 are supported by the X-axis beam support 8 from below, the configuration in the vicinity of both ends 5a of the X-axis beam 5 is made compact. be able to. Further, since the X-axis beam 5 is supported from below the both ends 5a, the excitation point can be positioned at a low position, which is also effective from the viewpoint of vibration suppression.

  It is to be noted that, by appropriately combining arbitrary embodiments of the various embodiments described above, the effects possessed by them can be produced.

DESCRIPTION OF SYMBOLS 1 Component mounting apparatus 2 Mounting head 3 Board | substrate 4 Board | substrate stage 5 X-axis beam 6 Y-axis drive part 6a Movable element 6b Stator 7 Adsorption nozzle 8 X-axis beam support body 9 Ceiling structure (Y-axis drive part support body)
DESCRIPTION OF SYMBOLS 10 Base 11 Linear motion rail 12 Linear motion block 13 Component supply part 14 Position detection sensor

Claims (8)

In a component mounting apparatus that mounts a component on a substrate by a mounting head by moving the mounting head in the X-axis direction and the Y-axis direction that are orthogonal to each other along the surface of the substrate placed on the substrate stage.
An X-axis beam that movably supports the mounting head in the X-axis direction;
An X-axis beam support disposed on the lower side of the X-axis beam and supporting both ends of the X-axis beam so that the X-axis beam can be moved in the Y-axis direction;
A Y-axis drive unit that applies a driving force in the Y-axis direction to the center upper portion of the X-axis beam and moves the X-axis beam in the Y-axis direction;
A Y-axis drive unit support that supports the Y-axis drive unit above the X-axis beam and is formed separately from the X-axis beam support and has higher rigidity in the Y-axis direction than in the X-axis direction; ,
A component mounting apparatus including a substrate stage and a base that supports an X-axis beam support and a Y-axis drive unit support.   The component mounting apparatus according to claim 1, wherein the X-axis beam support body supports both ends of the X-axis beam from below or from the side so that the X-axis beam can move in the Y-axis direction. The Y-axis drive unit support is configured by a monocoque frame in which a pair of side walls and a ceiling wall facing each other in the X-axis direction are integrally formed.
The component mounting apparatus according to claim 1, wherein the Y-axis drive unit is fixed to the ceiling wall, and lower portions of the pair of side walls are fixed to the base.   The component mounting apparatus according to claim 3, wherein the monocoque frame is opened in the Y-axis direction, and a component supply unit that supplies components to the mounting head is disposed at one or both ends of the base in the Y-axis direction.   The component mounting apparatus according to any one of claims 1 to 4, wherein the Y-axis driving unit applies a driving force in the Y-axis direction in a non-contact manner to the upper center portion of the X-axis beam using a linear motor.   The Y-axis drive unit includes a ball screw extending in the Y-axis direction, a ball nut screwed to the ball screw, a drive motor that rotationally drives the ball screw, and a ball nut that is slidable in the X-axis direction. A slide mechanism that engages a ball nut at the center upper portion of the X-axis, and suppresses vibration transmission in the X-axis direction from the X-axis beam to the Y-axis drive unit support by the slide mechanism. The component mounting apparatus according to one.   The X-axis beam support body supports both ends of the X-axis beam from below or from the side so that the X-axis beam can be moved in the Y-axis direction via a linear motion guide mechanism extending in the Y-axis direction. Item 7. The component mounting apparatus according to any one of Items 1 to 6. A component mounting method in which a mounting head is moved along an X-axis direction and a Y-axis direction that are orthogonal to each other along the surface of a substrate placed on a substrate stage, and the component is mounted on the substrate by the mounting head. ,
While supporting both ends of the X-axis beam that supports the mounting head movably in the X-axis direction by an X-axis beam support disposed below the X-axis beam, the X-axis beam is located above the X-axis beam. A Y-axis drive unit supported by a Y-axis drive unit support formed separately from the support gives a driving force in the Y-axis direction to the upper center of the X-axis beam in the Y-axis direction. The X-axis beam is moved to move the mounting head in the X-axis direction and the Y-axis direction, and is mounted on a substrate stage supported by a base that supports the X-axis beam support body and the Y-axis drive unit support body. A component mounting method in which a component is mounted on a placed board by a mounting head.

Images