JP2017050437A - Mounting head and component mounting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of adjusting the attachment angle of a nozzle 5 to a mounting head 4 conveniently.SOLUTION: A nozzle 5 is engaged disengageably with a nozzle holding member 6 fastened to a lifting shaft 43 by means of an outer screw 73. When releasing the fastening by means of the outer screw 73, the nozzle holding member 6 is rotatable about the lifting shaft 43, and can be rotated independently from the lifting shaft 43. The attachment angle of the nozzle 5 to the mounting head 4 can be adjusted conveniently, by rotating the nozzle holding member 6 without rotating the whole lifting shaft 43.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a technique for attaching a nozzle used for suction of a component to a mounting head.

  The mounting head of Patent Document 1 has a configuration in which a base that functions as a nozzle is detachably attached to the lower end of the head body. Specifically, a pin protrudes from the lower end of the head main body, and a bowl-shaped slit is formed in the base. By engaging the slit of the base with the pin of the head main body, A base can be attached (FIGS. 2 and 3). Also, a compression spring is provided between the lower end of the collar portion of the head body and the upper end of the base, and the engagement between the head body and the base is maintained by urging the base downward by the compression spring. Is done.

  Moreover, the mounting head of Patent Document 2 attaches a nozzle to the lower end of a nozzle shaft that can be moved up and down, and lifts and lowers the nozzle together with the nozzle shaft to suck and mount components by the nozzle. And this mounting head also comprises the structure which can attach a nozzle to the lower end of a nozzle shaft so that attachment or detachment is possible.

JP 62-107991 A JP 2010-177488 A

  By the way, it may be necessary to appropriately adjust the mounting angle of the nozzle with respect to the mounting head in accordance with, for example, the type of nozzle or component. Therefore, it is preferable that the mounting angle of the nozzle with respect to the mounting head can be easily adjusted. However, the mounting heads of Patent Documents 1 and 2 do not necessarily contribute to such a simple adjustment of the nozzle mounting angle.

  The present invention has been made in view of the above problems, and an object thereof is to provide a technique capable of easily adjusting the mounting angle of the nozzle with respect to the mounting head.

  The mounting head according to the present invention includes an elevating shaft having a mounting portion at a lower end portion and capable of moving up and down, a mounted portion attached to the mounting portion, an extending portion extending downward from the mounted portion, and a lower end of the extending portion A nozzle holding member having a nozzle engaging portion that is provided in a portion and capable of engaging and disengaging the nozzle, and holding the nozzle on the lifting shaft by clamping the mounted portion to the mounting portion while sandwiching the mounted portion between the mounting portion A fastening member that fixes the member and allows the nozzle holding member to rotate relative to the lifting shaft in a rotational direction centered on a line extending in the axial direction of the lifting shaft by releasing the tightening of the mounted portion to the mounting portion; Is provided.

  A component mounter according to the present invention includes a component supply unit that supplies a component, a substrate holding unit that holds a substrate, and the mounting head described above, and the component supplied by the component supply unit is mounted on the substrate by the mounting head. It is characterized by that.

  In the present invention (mounting head, component mounting machine) configured as described above, the nozzle is detachably engaged with the nozzle holding member fastened to the lifting shaft by the fastening member. Then, by releasing the tightening by the fastening member, the nozzle holding member can be rotated with respect to the lifting shaft, and the nozzle holding member can be rotated independently of the lifting shaft. Therefore, by rotating the nozzle holding member without rotating the entire lifting shaft, the mounting angle of the nozzle with respect to the mounting head can be easily adjusted.

  Further, an urging member that is disposed between the attached portion and the nozzle engaging portion and holds the engagement of the nozzle with the nozzle engaging portion by urging the nozzle engaging with the nozzle engaging portion downward. The fastening member has a through hole that opens downward, and the biasing member is inserted into the through hole from below, and the mounting head is configured to overlap at least part of the fastening member in the axial direction. Also good. In such a configuration, since at least a part of the fastening member is disposed overlapping the upper end of the urging member, it is possible to suppress the mounting head from being elongated in the axial direction by providing the fastening member, which is preferable. .

  Further, the mounting head may be configured such that the through hole penetrates the fastening member in the axial direction and the biasing member passes through the fastening member in the axial direction through the through hole. In such a configuration, since the biasing member is disposed so as to penetrate the fastening member in the axial direction, it is possible to more reliably suppress the mounting head from being elongated in the axial direction by providing the fastening member. is there. At this time, the mounting portion may function as a receiving member that receives the biasing member by configuring the mounting head so that the upper end of the biasing member is in contact with the mounting portion.

  In addition, a plate member that is externally fitted to the extending portion and is in contact with the upper end of the nozzle that engages with the nozzle engaging portion is provided, and the urging member has the nozzle that engages with the nozzle engaging portion via the plate member. The mounting head may be configured to urge downward. In this way, by using the plate member that is externally fitted to the extending portion and is in contact with the upper end of the nozzle, the biasing force of the biasing member can be suppressed and the biasing force can be given to the nozzle accurately.

  Further, the mounting head may be configured so that the urging member is a compression spring that is externally fitted to the extended portion. In such a configuration, the compression spring functioning as the urging member can be stably supported by the extending portion, and the urging force of the urging member can be accurately applied to the nozzle.

  Further, the fastening member may constitute the mounting head so that the attached portion is fastened to the attaching portion from the axial direction. Such a configuration of tightening from the axial direction is preferable because the nozzle holding member can be appropriately fastened to the elevating shaft while suppressing the inclination with respect to the axial direction.

  Specifically, the mounting portion has a receiving surface that receives the mounted portion, and a cylindrical wall that extends downward from the periphery of the receiving surface, and an inner screw that advances in the axial direction on the inner peripheral surface of the cylindrical wall. Even if the mounting head is configured so that the outer thread that advances in the axial direction is cut on the outer peripheral surface of the fastening member, and the mounting portion is tightened to the mounting portion by screwing with the inner screw of the cylindrical wall good.

  The present invention can be applied to various types of mounting heads. Therefore, the mounting head may be configured such that a plurality of lifting shafts are arranged in a circumferential shape, and a nozzle holding member is fastened to each lifting shaft by a fastening member.

  As described above, according to the present invention, it is possible to easily adjust the mounting angle of the nozzle with respect to the mounting head.

It is a partial top view which shows typically the component mounting machine equipped with an example of the mounting head which concerns on this invention. It is a perspective view which shows the external appearance structure of an example of the mounting head which concerns on this invention. It is a partial front view which shows typically the lower end vicinity of the mounting head of FIG. It is a partial side view which shows typically the lower end vicinity of the mounting head of FIG. FIG. 3 is a partially cutaway sectional view of the mounting head of FIG. 2. It is a fragmentary sectional view which shows typically the lower end part vicinity of the mounting head of FIG. It is a fragmentary sectional view showing typically the lower end part neighborhood of the mounting head concerning a modification. It is a fragmentary top view which shows typically an example of the adjustment of the attachment angle of the nozzle in the component mounting machine with which a some mounting head is located in a circle.

  FIG. 1 is a partial plan view schematically showing a component mounter equipped with an example of a mounting head according to the present invention. FIG. 2 is a perspective view showing an external configuration of an example of the mounting head according to the present invention. The component mounting machine 1 includes a pair of conveyors 12 and 12 provided on a base 11. Then, the component mounter 1 mounts the components on the substrate S that has been carried into the work position (the position of the substrate S in FIG. 1) from the upstream side in the X direction (substrate transport direction) by the conveyor 12, and completes the component mounting. The substrate S is carried out from the work position to the downstream side in the X direction by the conveyor 12.

  The component mounter 1 is provided with a pair of Y-axis rails 21, 21 extending in the Y direction, a Y-axis ball screw 22 extending in the Y direction, and a Y-axis motor My that rotationally drives the Y-axis ball screw 22, and a head support member 23 is fixed to the nut of the Y-axis ball screw 22 while being supported by the pair of Y-axis rails 21 and 21 so as to be movable in the Y direction. An X-axis ball screw 24 extending in the X direction and an X-axis motor Mx that rotationally drives the X-axis ball screw 24 are attached to the head support member 23, and the head unit 3 can move to the head support member 23 in the X direction. The nut is fixed to the nut of the X-axis ball screw 24 while being supported by the nut. Therefore, the Y-axis ball screw 22 is rotated by the Y-axis motor My to move the head unit 3 in the Y direction, or the X-axis ball screw 24 is rotated by the X-axis motor Mx to move the head unit 3 in the X direction. it can.

  On each side of the pair of conveyors 12 and 12 in the Y direction, two component supply units 28 are arranged in the X direction. A plurality of tape feeders 281 are detachably attached to each component supply unit 28, and small pieces of components (chip electronic components) such as integrated circuits, transistors, and capacitors are attached to each tape feeder 281. A reel on which tape stored at predetermined intervals is wound is disposed. The tape feeder 281 supplies parts in the tape by intermittently feeding the tape to the head unit 3 side.

  The head unit 3 includes a plurality (four) of mounting heads 4 arranged in the X direction. As shown in FIG. 2, each mounting head 4 includes a main shaft 40 extending in the Z direction (vertical direction), and the components can be sucked and held by a nozzle 5 detachably attached to the lower end of the main shaft 40. it can. Each mounting head 4 includes a gear 41 provided around a rotation center line C (virtual line) parallel to the Z direction in the vicinity of the center of the main shaft 40. On the other hand, the head unit 3 includes an R-axis motor Mr and a transmission mechanism 31 provided for each mounting head 4. The gear 41 of each mounting head 4 is engaged with the gear of the corresponding transmission mechanism 31, and each mounting head 4 rotates by receiving a driving force from the corresponding R-axis motor Mr via the transmission mechanism 31. It rotates in the rotation direction R around the center line C.

  In the component mounting machine 1 configured as described above, the mounting head 4 moves above the tape feeder 281 and sucks the components supplied by the tape feeder 281. At this time, the component is sucked by the nozzle 5 in a state in which the rotation angle of the mounting head 4 is adjusted so that the direction of the nozzle 5 at the lower end of the mounting head 4 matches the direction of the component to be sucked. Subsequently, the component is mounted on the substrate S by the mounting head 4 moving above the substrate S at the work position and releasing the suction of the component. At this time, the component is mounted by the nozzle 5 in a state in which the rotation angle of the mounting head 4 is adjusted so that the orientation of the component attracted by the nozzle 5 at the lower end of the mounting head 4 matches the orientation of the mounting location.

  FIG. 3 is a partial front view schematically showing the vicinity of the lower end of the mounting head of FIG. FIG. 4 is a partial side view schematically showing the vicinity of the lower end of the mounting head of FIG. FIG. 5 is a partially cutaway sectional view of the mounting head of FIG. 3 and 4, the “detached” column shows a state where the nozzle 5 is detached from the mounting head 4, and the “engaged” column shows a state where the nozzle 5 is engaged with the mounting head 4. ing. FIG. 5 shows a state in which the nozzle 5 is engaged with the mounting head 4. In each figure, the component P attracted by the nozzle 5 engaged with the mounting head 4 is shown as appropriate. As shown in these drawings, the mounting head 4 has a configuration in which the nozzle holding member 6 is attached to an attachment portion 44 provided at the lower end of the main shaft 40.

  The nozzle holding member 6 has a main shaft 61 extending in the Z direction and a nozzle engaging portion 62 provided at the lower end of the main shaft 61. The nozzle engaging portion 62 has a pair of engaging protrusions 621 and 621 that are arranged at an angle of 180 degrees in the rotational direction R. The engaging protrusions 621 and 621 have a convex shape upward while projecting in opposite directions in the horizontal direction. An annular pressing plate 71 and a coil-shaped compression spring 72 are fitted around the main shaft 61 of the nozzle holding member 6. That is, the main shaft 61 is inserted through the pressing plate 71 and the compression spring 72. In this way, the pressing plate 71 provided above the nozzle engaging portion 62 has a circle whose inner circumference is narrower than the width of the upper end of the nozzle engaging portion 62 (the distance between both ends of the engaging protrusions 621 and 621). It has an annular shape and is configured not to drop downward by being caught by the upper end of the nozzle engaging portion 62. The compression spring 72 provided above the pressing plate 71 has a coil shape with a diameter wider than the inner circumferential circle of the pressing plate 71 and smaller than the outer circumferential circle of the pressing plate 71, and the lower end of the compression spring 72 is the pressing plate. It contacts the upper surface of 71.

  The nozzle 5 has a substantially cylindrical hollow portion 51 that opens upward. The inner wall of the hollow portion 51 is provided with a pair of engagement holes 52 and 52 that are arranged at an angle of 180 degrees in the rotation direction R and are recessed upward. The nozzle 5 can be attached to the nozzle engaging portion 62 of the nozzle holding member 6 while inserting the lower end of the nozzle holding member 6 into the hollow portion 51.

  Specifically, for example, from the state of “disengaged” in FIG. 3, while pressing the nozzle 5 onto the nozzle holding member 6 from below, the pressing plate 71 is pressed on the upper surface of the nozzle 5 against the urging force of the compression spring 72. Push up relatively. Then, the nozzle 5 is relatively pushed up until the upper surface of the pressing plate 71 approaches or comes into contact with the mounting portion 44 provided at the lower end of the main shaft 40. As a result, the engagement hole 52 relatively rises above the engagement protrusion 621. By rotating the nozzle 5 from this state by 90 degrees, when the rotational positions (phases) of the engaging holes 52 and 52 and the engaging protrusions 621 and 621 are matched, the engaging holes 52 and 52 are engaged with the engaging protrusions 621 and 621. Located directly above. Subsequently, when the nozzle 5 is relatively lowered according to the urging force of the compression spring 72, the engagement protrusions 621 and 621 are immersed in the engagement holes 52 and 52, and the nozzle 5 and the nozzle engagement portion 62 are engaged. Further, since the compression spring 72 urges the nozzle 5 downward via the pressing plate 71, the engagement between the nozzle 5 and the nozzle engagement portion 62 is held by the urging force of the compression spring 72. Thus, as shown in the column “engagement” in FIG. 3, when the nozzle 5 and the engagement protrusion 621 are engaged, the air supply path 6 </ b> B (FIG. 6) formed in the nozzle holding member 6 and the nozzle 5 are formed. And a negative pressure or a positive pressure can be supplied to the nozzle 5 through the air supply path 6B. Here, the relative raising / lowering of the nozzle 5 with respect to the nozzle holding member 6 may be performed by raising / lowering the nozzle 5 or by raising / lowering the nozzle holding member 6 along with the raising / lowering shaft 43 described later. I do not care.

  The specific configuration for engaging the nozzle 5 is not limited to the configuration shown in FIG. 3, and various conventionally known configurations can be used. For example, the configuration shown in Patent Document 1 can also be used. Specifically, a pin is projected from the nozzle engaging portion 62 and a nozzle-like slit is provided in the nozzle 5, and the pin of the nozzle engaging portion 62 is connected to the base end of the slit that opens at the top of the nozzle 5. Introduce from the base end to the tip of the slit (tip of the heel). Then, the nozzle 5 is biased downward by the compression spring 72 and the pin of the nozzle engaging portion 62 is abutted against the tip of the slit of the nozzle 5, thereby maintaining the engagement between the nozzle engaging portion 62 and the nozzle 5. it can.

  6 is a partial cross-sectional view schematically showing the vicinity of the lower end of the mounting head of FIG. In FIG. 6, a portion where line hatching or dot hatching is performed is a cross section, and other portions (such as a portion where shadow is applied) are not cross sections. FIG. 6 shows a state where the nozzle 5 is detached from the nozzle holding member 6.

  The mounting head 4 includes a support shaft 42 formed of a ball cage extending in the Z direction, and an elevating shaft 43 (nozzle shaft) inserted into the support shaft 42 from below and extending in the Z direction, inside the main shaft 40. . The elevating shaft 43 has an outer cylinder member 43A extending in the Z direction and an air supply path 43B formed inside the outer cylinder member 43A and extending in the Z direction, and can be moved up and down while being supported by the support shaft 42. The lower end portion of the outer cylinder member 43A extends downward from the air supply path 43B and protrudes downward from the support shaft 42, and has an insertion hole 43C extending in the Z direction and opening downward. Further, a mounting portion 44 is provided at the lower end portion of the elevating shaft 43. The attachment portion 44 has a hollow cylindrical shape that opens downward, and includes a circular receiving surface 441 that is horizontally finished, and a cylindrical wall 442 that extends downward from the periphery of the receiving surface 441. A screw 443 that advances in the Z direction (axial direction) is cut on the inner peripheral surface of the cylindrical wall 442. And the nozzle holding member 6 can be attached with respect to the attaching part 44 of the raising / lowering shaft 4 comprised in this way.

  The nozzle holding member 6 includes an outer cylinder member 6A that extends in the Z direction, and an air supply path 6B that is formed inside the outer cylinder member 6A and extends in the Z direction. The nozzle holding member 6 has a circular flange 63 protruding in the horizontal direction from the main shaft 61, and the main shaft 61 of the nozzle holding member 6 includes an insertion / removal portion 611 extending above the flange 63 and a flange 63. And an extending portion 612 extending downward. And the insertion / removal part 611 can be inserted / removed from the lower side with respect to the insertion hole 43C of the raising / lowering shaft 43, and the insertion / removal part 611 is completely inserted in the raising / lowering shaft 43 ("fastening" of FIG. In the state shown in the column), the flange 63 abuts against the receiving surface 441 of the lifting shaft 43.

  On the other hand, the pressing plate 71 and the compression spring 72 described above are fitted on the extended portion 612, and the nozzle engaging portion 62 described above is provided at the lower end of the extended portion 612. Further, a cylindrical external screw 73 disposed in the Z direction between the flange 63 and the pressing plate 71 is fitted on the extended portion 612. That is, the outer screw 73 has an insertion hole 731 that penetrates in the Z direction at the center, and the extending portion 612 is inserted into the insertion hole 731 of the outer screw 73. Moreover, the diameter of the insertion hole 731 of the outer screw 73 is wider than the outer diameter of the compression spring 72, and at least the upper end portion of the compression spring 72 can be inserted into and removed from the insertion hole 731 from below. A screw 732 that advances in the Z direction is cut on the outer peripheral surface of the outer screw 73, and the screw 732 on the outer peripheral surface of the outer screw 73 is screwed into the screw 443 on the inner peripheral surface of the cylindrical wall 442.

  Thus, the outer screw 73 is screwed into the cylindrical wall 442 while sandwiching the flange 63 between the receiving surface 441 and tightens the flange 63 to the receiving surface 441 from the Z direction so that the nozzle holding member is attached to the lifting shaft 43. 6 is fastened (state shown in the column of “fastening” in FIG. 6). In this fastened state, the compression springs 72 inserted into the insertion holes 731 of the external screw 73 overlap with the external screw 73 in the Z direction.

  Here, the thickness of the external screw 73 is equal to the contact height (compression length) of the compression spring 72, and at least the lower end of the compression spring 72 is below the external screw 73 when the nozzle 5 is not attached to the nozzle holding member 6. Protrusively. On the other hand, when the nozzle 5 is engaged with the nozzle holding member 6 in the above-described procedure, the compression spring 72 pushed upward by the nozzle 5 via the pressing plate 71 passes through the insertion hole 731 to the lower surface of the flange portion 63. It is compressed while abutting. As a result, the compression spring 72 urges the nozzle 5 downward via the pressing plate 71 and holds the engagement between the nozzle holding member 6 and the nozzle 5 as described above. Thus, in a state where the nozzle 5 is engaged with the nozzle holding member 6 fastened to the elevating shaft 43, the compression spring 72 passes through the insertion hole 731 in the Z direction and overlaps with the entire outer screw 73, particularly in FIG. In the embodiment, the compression spring 72 overlaps the entire screwing range T in which the screw 732 of the outer screw 73 and the screw 443 of the cylindrical wall 442 are screwed together in a state where the nozzle holding member 6 is fastened to the lifting shaft 43.

  In this fastening state, the air supply path 43B of the lifting shaft 43 and the air supply path 6B of the nozzle holding member 6 communicate with each other. Therefore, negative pressure or positive pressure can be supplied to the nozzle 5 attached to the nozzle holding member 6 via the air supply path 43B and the air supply path 6B.

  In this configuration, the nozzle holding member 6 is fixed to the lifting shaft 43 by tightening the collar portion 63 to the receiving surface 441 with the external screw 73 as shown in the column “fastening” in FIG. Can not rotate. On the other hand, as shown in the “fastening release” column of FIG. 6, the screwing of the outer screw 73 to the cylindrical wall 442 is loosened, and the fastening of the flange 63 to the receiving surface 441 by the outer screw 73 is released, In the rotation direction R around the rotation center line C, the nozzle holding member 6 can rotate with respect to the elevating shaft 43. The operations of “fastening” and “fastening release” may be performed by an operator, or may be performed by providing a dedicated device.

  As described above, in the mounting head 4 of the present embodiment, the nozzle 5 is detachably engaged with the nozzle holding member 6 fastened to the lifting shaft 43 by the external screw 73. Then, by releasing the tightening by the external screw 73, the nozzle holding member 6 can be rotated with respect to the lifting shaft 43, and the nozzle holding member 6 can be rotated independently of the lifting shaft 43. Therefore, the mounting angle of the nozzle 5 with respect to the mounting head 4 can be easily adjusted by rotating the nozzle holding member 6 without rotating the entire lifting shaft 43.

  In addition, since the external screw 73 is disposed so as to overlap the compression spring 72, the external screw 73 can be prevented from being elongated in the axial direction (Z direction), which is preferable. . In particular, the part below the lower end of the support shaft 42 among the elevating shaft 43, the nozzle holding member 6, and the nozzle 5 is an unsupported portion U that is not directly supported by the support shaft 42, and thus is easily inclined. Accordingly, when the unsupported portion U becomes longer, the displacement of the nozzle 5 becomes larger, and the mounting accuracy of the components is lowered. On the other hand, since the external screw 73 is disposed so as to overlap the compression spring 72, it is possible to suppress an increase in the length of the unsupported portion U and to suppress a decrease in mounting accuracy.

  In particular, the compression spring 72 is disposed so as to penetrate the insertion hole 731 that penetrates the external screw 73 in the Z direction. For this reason, the provision of the external screw 73 can more reliably suppress the mounting head 4 from being elongated in the axial direction, which is preferable. At this time, the upper end of the compression spring 72 is in contact with the flange portion 63, and the flange portion 63 functions not only as a function of being attached to the attachment portion 44 but also as a receiving member for receiving the compression spring 72.

  In addition, a pressing plate 71 that is fitted on the extended portion 612 and is in contact with the upper end of the nozzle 5 that engages with the nozzle engaging portion 62 is provided, and the compression spring 72 engages with the nozzle engaging portion 62. The nozzle 5 is urged downward via the pressing plate 71. As described above, the biasing force of the compression spring 72 can be appropriately given to the nozzle 5 with a relatively small bias by being externally fitted to the extending portion 612 and via the pressing plate 71 in contact with the upper end of the nozzle 5.

  Further, the compression spring 72 is provided so as to be fitted on the extended portion 612. Therefore, the compression spring 72 can be stably supported by the extending portion 612, and the urging force of the compression spring 72 can be given to the nozzle 5 accurately.

  Further, the outer screw 73 fastens the nozzle holding member 6 to the elevating shaft 43 by fastening the collar portion 63 to the attachment portion 44 from the axial direction. In such a configuration, the nozzle holding member 6 and the elevating shaft 43 are fastened by a fastening force acting in the axial direction. Therefore, since it is possible to suppress a force inclined with respect to the axial direction from acting on the nozzle holding member 6, it is possible to appropriately fasten the nozzle holding member 6 to the elevating shaft 43 while suppressing the inclination with respect to the axial direction. .

  As described above, in this embodiment, the mounting head 4 corresponds to an example of the “mounting head” of the present invention, the lifting shaft 43 corresponds to an example of the “lifting shaft” of the present invention, and the mounting portion 44 is the main part. The nozzle holding member 6 corresponds to an example of the “nozzle holding member” of the present invention, and the flange portion 63 corresponds to an example of the “attached portion” of the present invention. The installation portion 612 corresponds to an example of the “extension portion” of the present invention, the nozzle engagement portion 62 corresponds to an example of the “nozzle engagement portion” of the present invention, and the external screw 73 corresponds to the “fastening member” of the present invention. The Z direction corresponds to an example of the “axial direction” of the present invention, and the rotation direction R corresponds to an example of the “rotational direction” of the present invention. The compression spring 72 corresponds to an example of the “biasing member” and “compression spring” of the present invention, the insertion hole 731 corresponds to an example of the “through hole” of the present invention, and the pressing plate 71 corresponds to “ It corresponds to an example of “plate member”, the receiving surface 441 corresponds to an example of “receiving surface” of the present invention, the cylindrical wall 442 corresponds to an example of “cylindrical wall” of the present invention, and the screw 443 corresponds to “ The “inner screw” corresponds to an example, and the screw 732 corresponds to an “outer screw” of the present invention. The component mounter 1 corresponds to an example of the “component mounter” of the present invention, the component supply unit 28 corresponds to an example of the “component supply unit” of the present invention, and the conveyor 12 corresponds to the “board holding unit” of the present invention. Is equivalent to an example.

  The present invention is not limited to the above-described embodiment, and various modifications can be made to the above-described one without departing from the spirit of the present invention. For example, the specific configuration of the “fastening member” that fastens the nozzle holding member 6 to the lifting shaft 43 is not limited to the external screw 73 described above. Therefore, the nozzle holding member 6 may be fastened to the elevating shaft 43 by the configuration described below.

  FIG. 7 is a partial cross-sectional view schematically showing the vicinity of the lower end portion of the mounting head according to the modification. In FIG. 7, a portion where line hatching or dot hatching is performed is a cross section, and other portions (portions where shadow is applied) are not cross sections. FIG. 7 shows a state where the nozzle 5 is detached from the nozzle holding member 6. 7 is different from the mounting head 4 in FIG. 6 in that the nozzle holding member 6 is fastened to the lifting shaft 43. Therefore, in the following, different configurations will be mainly described, and common configurations will be denoted by corresponding reference numerals, and description thereof will be omitted as appropriate. However, it goes without saying that the same effect can be obtained by providing a common configuration.

  In the modification of FIG. 7, the attachment portion 44 provided at the lower end portion of the elevating shaft 43 has a cylindrical shape, and a screw 444 that advances in the Z direction (axial direction) is cut on the outer peripheral surface thereof. On the other hand, an inner screw 74 is fitted onto the nozzle holding member 6. That is, the inner screw 74 has a cylindrical bottom portion 741 and a cylindrical wall 742 extending upward from the periphery of the bottom portion 741. Further, the inner screw 74 has an insertion hole 743 formed so as to penetrate the bottom 741 and the cylindrical wall 742 in the Z direction, and the main shaft 61 of the nozzle holding member 6 is the insertion hole of the inner screw 74. 743 is inserted.

  The inner peripheral diameter of the bottom portion 741 (that is, the diameter of the insertion hole 743 surrounded by the bottom portion 741) is smaller than the diameter of the flange portion 63 and larger than the outer diameter of the compression spring 72. Therefore, the position of the bottom portion 741 is restricted below the flange portion 63, and the upper end portion of the compression spring 72 can be inserted into and removed from the bottom portion 741 (the insertion hole 743). On the other hand, the diameter of the inner periphery of the cylindrical wall 742 (that is, the diameter of the insertion hole 743 surrounded by the cylindrical wall 742) is larger than the diameter of the flange 63, and the cylindrical wall 742 accommodates the flange 63 inside thereof. Further, a screw 744 that advances in the Z direction is cut on the inner peripheral surface of the cylindrical wall 742, and the screw 744 on the inner peripheral surface of the inner screw 74 is screwed into the screw 444 on the outer peripheral surface of the mounting portion 44.

  Thus, the inner screw 74 receives the flange 63 from the Z direction (axial direction) by being screwed into the attachment portion 44 while sandwiching the flange 63 between the receiving surface 441 provided on the bottom of the attachment portion 44. The nozzle holding member 6 is fastened to the lifting shaft 43 by being fastened to the surface 441 (state shown in the column “fastening” in FIG. 7). In this fastened state, the compression spring 72 inserted into the insertion hole 743 of the inner screw 74 overlaps with the inner screw 74 in the Z direction.

  Here, the thickness of the bottom 741 of the inner screw 74 is equal to the contact height of the compression spring 72, and at least the lower end of the compression spring 72 is below the outer screw 73 when the nozzle 5 is not attached to the nozzle holding member 6. Protruding. On the other hand, when the nozzle 5 is engaged with the nozzle holding member 6 in the above-described procedure, the compression spring 72 pushed upward by the nozzle 5 via the pressing plate 71 passes through the insertion hole 743 of the bottom portion 741 and the flange portion 63. Compressed while abutting on the lower surface of. As a result, the compression spring 72 urges the nozzle 5 downward via the pressing plate 71 and holds the engagement between the nozzle holding member 6 and the nozzle 5 as described above.

  In such a configuration, the nozzle holding member 6 is fixed to the lifting shaft 43 by tightening the collar portion 63 to the receiving surface 441 with the inner screw 74 as shown in the column of “fastening” in FIG. Can not rotate. On the other hand, as shown in the column of “fastening release” in FIG. 7, by loosening the screwing of the inner screw 74 to the mounting portion 44 and releasing the tightening of the flange portion 63 to the receiving surface 441 by the inner screw 74, In the rotation direction R around the rotation center line C, the nozzle holding member 6 can rotate with respect to the elevating shaft 43.

  As described above, in the mounting head 4 according to the modification, the nozzle 5 is detachably engaged with the nozzle holding member 6 fastened to the lifting shaft 43 by the internal screw 74 (fastening member). Then, by releasing the tightening by the inner screw 74, the nozzle holding member 6 can be rotated with respect to the lifting shaft 43, and the nozzle holding member 6 can be rotated independently of the lifting shaft 43. Therefore, the mounting angle of the nozzle 5 with respect to the mounting head 4 can be easily adjusted by rotating the nozzle holding member 6 without rotating the entire lifting shaft 43.

  Moreover, since at least the bottom 741 of the inner screw 74 is disposed overlapping the compression spring 72 (biasing member), the mounting head 4 is elongated in the axial direction (Z direction) by providing the inner screw 74. This is preferable because it can be suppressed.

  Incidentally, in any of the mounting heads 4 in FIGS. 6 and 7, the nozzle holding member 6 is fastened to the elevating shaft 43 from the Z direction (axial direction). However, the direction in which these are fastened is not limited to this.

  In addition, the degree of overlapping of the fastening member such as the outer screw 73 and the inner screw 74 and the biasing member such as the compression spring 72 can be appropriately changed. For example, the mounting head 4 can be configured without overlapping these.

  Further, for example, as described in JP 2012-54384 A, the present invention can be applied to a so-called rotary type mounting head. FIG. 8 is a partial plan view schematically showing the configuration of a rotary type mounting head. In the drawing, the nozzle 5 is shown as a representative opening at its tip. The mounting head 4 includes eight elevating shafts 43 arranged circumferentially at an equal pitch, and can be rotated around the center of the circumferential arrangement of the elevating shafts 43. In particular, when the component P supplied to the supply position 281A by the tape feeder 281 is picked up, the mounting head 4 rotates to move the one lifting shaft 43 directly above the supply position 281A. Subsequently, the mounting head 4 lowers the one lifting shaft 43 to suck the component P from the supply position 281 </ b> A by the nozzle 5 attached to the one lifting shaft 43.

  Here, as shown in the figure, the direction of the component P (the longitudinal direction of the component P) supplied to the supply position 281A by the tape feeder 281 is parallel to the Y direction. Therefore, the direction of the nozzle 5 (the longitudinal direction of the opening of the nozzle 5) when sucking the component P from the supply position 281A is also required to be aligned parallel to the Y direction, and the mounting angle of each nozzle 5 is shown in FIG. It is necessary to adjust the angle. On the other hand, according to the above embodiment, since the nozzle 5 is attached to the nozzle holding member 6 that can rotate independently of the lifting shaft 43, the attachment angle of the nozzle 5 with respect to the mounting head 4 can be easily adjusted. It is suitable.

1. Component mounting machine 1
12 ... Conveyor (substrate holding part)
DESCRIPTION OF SYMBOLS 28 ... Component supply part 4 ... Mounting head 43 ... Elevating shaft 44 ... Mounting part 441 ... Reception surface 442 ... Cylindrical wall 443 ... Screw (inner screw)
DESCRIPTION OF SYMBOLS 5 ... Nozzle 6 ... Nozzle holding member 612 ... Extension part 62 ... Nozzle engagement part 621 ... Engagement protrusion 63 ... Gutter part (attachment part)
71 ... Pressing plate (plate member)
72. Compression spring (biasing member)
73 ... External screw (fastening member)
731 ... Insertion hole (through hole)
732 ... Screw (External screw)
Z ... Axial direction R ... Rotation direction C ... Rotation center line

Claims (10)

A lifting shaft having a mounting portion at the lower end and capable of moving up and down;
A nozzle having an attached portion attached to the attaching portion, an extending portion extending downward from the attached portion, and a nozzle engaging portion provided at the lower end portion of the extending portion and capable of engaging and disengaging the nozzle. A holding member;
The nozzle holding member is fixed to the elevating shaft by tightening the attached portion to the attaching portion while sandwiching the attached portion between the attaching portion, and tightening the attached portion to the attaching portion. A mounting head comprising: a fastening member that is disengaged so that the nozzle holding member can rotate with respect to the lifting shaft in a rotation direction centered on a line extending in the axial direction of the lifting shaft. The nozzle is disposed between the attached portion and the nozzle engaging portion, and the nozzle engaging with the nozzle engaging portion is biased downward to maintain the engagement of the nozzle with the nozzle engaging portion. Further comprising an urging member
The fastening member has a through hole that opens downward;
The mounting head according to claim 1, wherein the biasing member is inserted into the through hole from below and overlaps at least a part of the fastening member in the axial direction.   The mounting head according to claim 2, wherein the through hole penetrates the fastening member in the axial direction, and the biasing member penetrates the fastening member in the axial direction through the through hole.   The mounting head according to claim 3, wherein an upper end of the urging member abuts on the attached portion. A plate member that is externally fitted to the extending portion and is in contact with the upper end of the nozzle that engages with the nozzle engaging portion;
5. The mounting head according to claim 2, wherein the urging member urges the nozzle engaged with the nozzle engaging portion downward through the plate member. 6.   The mounting head according to claim 2, wherein the urging member is a compression spring that is externally fitted to the extending portion.   The mounting head according to claim 1, wherein the fastening member fastens the attached portion to the attaching portion from the axial direction. The mounting portion includes a receiving surface that receives the mounted portion, and a cylindrical wall that extends downward from a peripheral edge of the receiving surface,
An inner thread that advances in the axial direction is cut on the inner peripheral surface of the cylindrical wall,
The mounting head according to claim 7, wherein an outer thread that advances in the axial direction is cut on an outer peripheral surface of the fastening member, and the attached portion is fastened to the attaching portion by being screwed into an inner screw of the cylindrical wall.   The mounting head according to any one of claims 1 to 8, wherein a plurality of the lifting shafts are arranged in a circumferential shape, and the nozzle holding member is fastened to the lifting shafts by the fastening member. A component supply unit for supplying components;
A substrate holder for holding the substrate;
The mounting head according to any one of claims 1 to 9, comprising:
A component mounter that mounts the component supplied by the component supply unit on the substrate by the mounting head.

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