JP2003174285A - Mounting head for electronic component mounting equipment - Google Patents

Abstract

(57) [Problem] To provide a mounting head of an electronic component mounting apparatus that can be reduced in size. SOLUTION: The mounting head (5) of the electronic component mounting apparatus of the present invention includes a shaft (30) holding a suction nozzle, a vertical movement motor (Z-axis motor 51), a bracket (80) supporting the shaft, and a vertical movement. A plurality of component mounting means (10) including a ball screw (52) for transmitting the driving force of the motor to the shaft, a rotary motor (61), and the like are provided in series. Then, the shaft and the rotating shaft of the rotating motor (61a)
The rotation axis of the rotary motor is disposed on the same circular arc (L2) so that the axial center distances (R1 to R4) are substantially the same, and the screw shaft (52a) and the rotary shaft (51a) of the vertically moving motor Are arranged on the same arc (L4) so that the axial distances (R5 to R8) are substantially the same. Therefore,
The mounting head can be miniaturized by changing the axial distance between the shafts and the axial distance between the screw shafts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting head for an electronic component mounting apparatus.

[0002]

2. Description of the Related Art As a mounting head of an electronic component mounting apparatus for mounting an electronic component at a predetermined position on a circuit board, one having a plurality of suction nozzles is known. Such a mounting head is configured by connecting a plurality of component mounting means including a suction nozzle and a mechanism for driving the suction nozzles in series. As shown in FIG. 5, each component mounting means 100 includes a suction nozzle. A Z-axis motor 102 that vertically moves 101, a rotation motor 103 that rotates the suction nozzle 101, a hollow shaft 104 that holds the suction nozzle 101 at the lower end, a bracket 105 that supports the hollow shaft 104, and a bracket 10.
5, a linear way 106 for guiding the vertical movement of the guide 5, a support member 107 to which these components are attached, and the like.

Bracket 10 supporting shaft 104
5 is joined to the nut 108a of the ball screw 108. A driven pulley 108c is attached to an upper end of a screw shaft 108b of the ball screw 108, and a timing belt 109 wound around the driven pulley 108c and a drive pulley 102b attached to a rotating shaft 102a of the Z-axis motor 102 is mounted. The drive of the Z-axis motor 102 is transmitted to the screw shaft 108b via the shaft 104, and thus the shaft 104, and thus the suction nozzle 101, is moved up and down. In addition,
The vertical movement of the suction nozzle 101 is guided by a rail 106a of the linear way 106 attached to the support member 107 and a slide unit 106b of the linear way 106 attached to the bracket 105.

Further, the rotary shaft 103a of the rotary motor 103
A drive pulley 103b is attached to the drive pulley 103b, and the timing belt 109 wound around the drive pulley 103b is
It is also wound around a driven pulley 103c that rotates integrally with the nut 110a of the ball spline 110. The drive of the rotary motor 103 is driven by the ball spline 110.
Is transmitted to the shaft 104 and thus the suction nozzle 10.
1 is designed to rotate. Then, as shown in FIG. 6, a plurality of (for example, four) component mounting means 100 are connected in the left-right direction to form a mounting head 200.

[0005]

However, when the mounting head 200 is constituted by connecting a plurality of component mounting means 100 in this manner, as shown in FIG. 6, the mounting heads 200 are disposed behind each Z-axis motor 102. The axial center distance A1 between the screw shafts 108b is substantially the same as the axial center distance A2 between the rotary shafts 102a of the Z-axis motor 102, and the hollow shaft 104b.
The axial center distance A3 therebetween is substantially the same as the distance A2 between the rotating shafts 102b. Although not shown, the rotary motor 103
The axial center distance between the rotating shafts 103a is substantially the same as the axial center distance A2 between the rotating shafts 102b.

As described above, the axial center distance A1 between the screw shafts 108b and the axial center distance A3 between the hollow shafts 104 are left and right of the Z-axis motor 102 having a relatively large shape among various devices constituting the mounting head 200. The width is determined by the width, and if the horizontal width of the rotary motor 103 is larger than the horizontal width of the Z-axis motor 102, the screw shaft 108
The axial distance A1 between b and the axial distance A3 between the hollow shafts 104 are mainly determined by the lateral width of the rotary motor 103. In this way, the axial distance A1 between the screw shafts 108b and the axial distance A3 between the hollow shafts 104 are determined by the influence of the left-right width of the Z-axis motor 102 or the rotary motor 103. The conversion was generally difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mounting head for an electronic component mounting apparatus that can be miniaturized in consideration of the above problems.

[0008]

In order to solve the above problems, a mounting head (5) of an electronic component mounting apparatus according to claim 1 vacuum-sucks an electronic component and mounts it at a predetermined position on a circuit board. A suction nozzle (20), a shaft (30) arranged along the vertical direction and holding the suction nozzle at the lower end, a vertical movement motor (Z-axis motor 51) for driving the shaft in the vertical direction, A bracket (80) for supporting the shaft, a ball screw (52) for transmitting the driving force of the vertical movement motor to the bracket,
A rotary motor (6) that drives the shaft to rotate about its axis.
1) A mounting head of an electronic component mounting apparatus configured by arranging a plurality of component mounting means (10), the shafts being arranged on the same straight line (L1) in plan view. And the rotation axes of the rotary motors are on the same arc (L2) in plan view so that the axial center distances (R1 to R4) of the rotation shafts (61a) of the rotation motors corresponding to the respective shafts are substantially the same. It is arranged in.

According to the mounting head of the electronic component mounting apparatus of the first aspect, the plurality of shafts are arranged on the same straight line in a plan view, and the axial distance between the shafts and the rotary shaft of the rotary motor corresponding to each shaft. So that they are substantially the same, the rotation axes of the plurality of rotary motors are arranged on the same arc in a plan view. Therefore, it is not necessary to make the axial distance between the shafts the same as the axial distance between the rotary shafts of the rotary motor, so that the mounting head can be designed more freely and the mounting head can be downsized. Further, since the component mounting means have the same shape and size, the constituent members of the component mounting means can be shared with each other, and the manufacturing cost of the mounting head can be suppressed.

A mounting head of the electronic component mounting apparatus according to a second aspect is the mounting head of the electronic component mounting apparatus according to the first aspect, wherein the axial center distance (T1) between the shafts is equal to the rotation of the rotary motor. It is characterized in that it is smaller than the axial center distance (T3) between the axes.

According to the mounting head of the electronic component mounting apparatus of the second aspect, the same effect as that of the first aspect can be obtained, and the axial center distance between the shafts is more than the axial center distance between the rotary shafts of the rotary motor. Since it is made smaller, the space around the shaft can be made smaller and the mounting head can be made smaller.

A mounting head of the electronic component mounting apparatus according to a third aspect is the mounting head of the electronic component mounting apparatus according to the first or second aspect, which is for a rotary motor that transmits the driving force of the rotary motor to the shaft. Driving force transmission means (62)
Includes a rotary motor drive pulley (62a) attached to the rotary shaft of the rotary motor, a rotary motor driven pulley (62b) attached to the shaft, and the rotary motor drive pulley and the rotary motor driven pulley. It is characterized in that it is provided with a timing belt (62c) for a rotating motor to be wound around, and that adjacent driven pulleys for a rotating motor are attached so as to be vertically overlapped with each other.

According to the mounting head of the electronic component mounting apparatus of the third aspect, the same effect as that of the first or second aspect can be obtained, and the driven motor driven pulleys adjacent to each other are vertically and alternately attached to each other. Even when the axial center distance between them is made small, the driven pulleys for adjacent rotation motors can be driven without interfering with each other.

According to a fourth aspect of the present invention, there is provided a mounting head for an electronic component mounting apparatus, which is arranged along a vertical direction and a suction nozzle for vacuum-suctioning an electronic component and mounting the electronic component at a predetermined position on a circuit board.
A shaft that holds the suction nozzle at the lower end, a vertical movement motor that drives the shaft in the vertical direction, a bracket that supports the shaft, a ball screw that transmits the driving force of the vertical movement motor to the bracket, A mounting head of an electronic component mounting apparatus configured by connecting a plurality of component mounting means, each of which has a rotation motor for rotating a shaft around an axis, wherein the screw shafts (52a) of the ball screws are the same in plan view. The screw shafts are arranged on a straight line (L3), and the axial distances (R5 to R8) between the screw shafts and the rotary shafts (51a) of the vertical movement motors corresponding to the screw shafts are substantially equal to each other. The rotation shafts of the vertical movement motors are arranged on the same arc (L4) in plan view.

According to the mounting head of the electronic component mounting apparatus of the present invention, a plurality of screw shafts are arranged on the same straight line in a plan view, and each screw shaft and a rotary shaft of a vertical movement motor corresponding to each screw shaft. The rotation axes of the plurality of vertical movement motors are arranged on the same circular arc in a plan view so that the axial center distances thereof are substantially the same. Therefore, it is not necessary to make the axial center distance between the screw shafts the same as the axial center distance between the rotary shafts of the vertical movement motor, so that the degree of freedom in designing the mounting head is improved and the mounting head can be downsized. Further, since the component mounting means have the same shape and size, the constituent members of the component mounting means can be shared with each other, and the manufacturing cost of the mounting head can be suppressed.

A mounting head of an electronic component mounting apparatus according to a fifth aspect is the mounting head of the electronic component mounting apparatus according to the fourth aspect, wherein the axial center distance (T2) between the screw shafts is set to the vertical movement motor. It is characterized in that it is smaller than the axial center distance (T4) between the rotating shafts.

According to the mounting head of the electronic component mounting apparatus of the fifth aspect, the same effect as that of the fourth aspect can be obtained, and the axial center distance between the screw shafts can be set between the rotating shafts of the vertical movement motor. Since the distance is smaller than the axial center distance, the space around the screw shaft can be reduced and the mounting head can be downsized.

A mounting head of an electronic component mounting apparatus according to a sixth aspect is the mounting head of the electronic component mounting apparatus according to the fourth or fifth aspect, in which a vertical movement for transmitting the driving force of the vertical movement motor to the shaft. Motor drive force transmission means (5
3) is a vertical movement motor drive pulley (53a) attached to the rotary shaft of the vertical movement motor, and a vertical movement motor driven pulley (53b) attached to the screw shaft,
The vertical movement motor drive pulley and the vertical movement motor driven pulley are wound around the vertical movement motor timing belt (53c). Adjacent vertical movement motor driven pulleys are mounted so as to be vertically overlapped with each other. It is characterized by being

According to the mounting head of the electronic component mounting apparatus of the sixth aspect, the same effect as that of the fourth or fifth aspect can be obtained, and adjacent driven motor driven pulleys are vertically and alternately mounted. Even when the axial center distance between the screw shafts is reduced, it is possible to drive the adjacent driven pulleys for vertical movement motors without interfering with each other.

According to a seventh aspect of the present invention, there is provided a mounting head for an electronic component mounting apparatus, which is arranged along a vertical direction and a suction nozzle for vacuum-suctioning an electronic component and mounting the electronic component at a predetermined position on a circuit board.
A shaft that holds the suction nozzle at the lower end, a vertical movement motor that drives the shaft in the vertical direction, a bracket that supports the shaft, a ball screw that transmits the driving force of the vertical movement motor to the bracket, A mounting head of an electronic component mounting apparatus configured by arranging a plurality of component mounting means including a rotation motor that rotationally drives a shaft around an axis, wherein the shafts are arranged on the same straight line in plan view, The rotation shafts of the rotation motors are arranged on the same arc in a plan view so that the shaft center distances between the shafts and the rotation shafts of the rotation motors corresponding to the shafts are substantially the same. The screw shafts are arranged on the same straight line in a plan view, and each screw shaft,
The rotation shafts of the vertical movement motors are arranged on the same arc in a plan view so that the axial center distances of the screw shafts and the rotation shafts of the vertical movement motors are substantially the same. .

According to the mounting head of the electronic component mounting apparatus of the present invention, the shafts are arranged on the same straight line in a plan view, and the shafts and the rotary shafts of the rotary motors corresponding to the shafts are arranged. The rotation shafts of the rotary motor are arranged on the same arc in plan view, and the screw shafts of the ball screw are arranged on the same straight line in plan view so that the axial center distances are substantially the same. And the rotary shafts of the vertical movement motors are arranged on the same circular arc in plan view so that the axial center distances of the screw shafts and the rotation shafts of the vertical movement motors are substantially the same. Therefore, the axial distance between the shafts need not be the same as the axial distance between the rotary shafts of the rotary motor, and the axial distance between the screw shafts is the same as the axial distance between the rotary shafts of the vertical movement motor. Since it is unnecessary to design the mounting head, the flexibility of designing the mounting head is improved, and the mounting head can be downsized. Further, since the component mounting means have the same shape and size, the constituent members of the component mounting means can be shared with each other, and the manufacturing cost of the mounting head can be suppressed.

The mounting head of the electronic component mounting apparatus according to claim 8 is the mounting head of the electronic component mounting apparatus according to claim 7, wherein the axial center distance between the shafts is the rotational axis of the rotary motor. The axial center distance between the screw shafts is smaller than the axial center distance, and the axial center distance between the screw shafts is smaller than the axial center distance between the rotating shafts of the vertical movement motor.

According to the mounting head of the electronic component mounting apparatus of the eighth aspect, the same effect as that of the seventh aspect can be obtained, and the axial center distance between the shafts can be set to the axial center between the rotary shafts of the rotary motor. Since the axial center distance between the screw shafts is smaller than the axial center distance between the rotary shafts of the vertical movement motor, the space around the shaft and the screw shaft can be reduced, and the mounting head can be downsized. be able to.

The mounting head of the electronic component mounting apparatus according to claim 9 is the mounting head of the electronic component mounting apparatus according to claim 7 or 8, which is for a rotary motor for transmitting the driving force of the rotary motor to the shaft. The driving force transmission means includes a rotary motor drive pulley attached to the rotary shaft of the rotary motor, a rotary motor driven pulley attached to the shaft, and a rotary motor drive pulley and a rotary motor driven pulley. A vertical drive motor drive pulley, wherein vertical drive motor drive force transmission means for transmitting the drive force of the vertical drive motor to the shaft is attached to the rotary shaft of the vertical drive motor. And a driven pulley for a vertical movement motor attached to the screw shaft, a drive pulley for these vertical movement motors, and a vertical movement motor A vertical pulley motor timing belt that is wound around the moving pulley, and at least one of the adjacent rotary motor driven pulley and the adjacent vertical motor driven pulley is mounted so as to overlap vertically. Is characterized by.

According to the mounting head of the electronic component mounting apparatus of the ninth aspect, the same effect as that of the seventh or eighth aspect can be obtained, and the adjacent rotary motor driven pulleys and the adjacent vertical motor driven pulleys can be provided. Since at least one of them is installed by alternately stacking vertically, even if the axial distance between the shafts or the axial distance between the screw shafts is reduced, the adjacent rotary motor driven pulley and the adjacent vertical motor driven pulley will be installed. It can be driven without interference.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a mounting head of an electronic component mounting apparatus of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, an electronic component mounting apparatus 1
Is an electronic component supply means 2 for supplying electronic components (for example,
A tape feeder), a substrate transporting device 4 for transporting the circuit board 3, a component mounting means 10 for supporting the suction nozzle 20 to move up and down, and a plurality of component mounting means 10 arranged in a row in the left-right direction. Mounting head 5 and XY for moving the mounting head 5 in the front-back, left-right direction (XY direction) in a horizontal plane
The moving device 6, the image pickup means 7 for picking up an image of the suction state of the electronic component by the suction nozzle 20, the control means (not shown) for controlling the driving of these various devices, and the like are roughly configured. In addition,
FIG. 1 shows a head cover 8 that covers the mounting head 5.

The operation of the electronic component mounting apparatus 1, that is,
Suction / mounting operation of electronic parts by the suction nozzle 20 and X
Since the operation of the Y moving device 6 is well known, the description thereof will be omitted, and the configuration of the mounting head 5 will be mainly described below.

As described above, the mounting head 5 is composed of a plurality of (in the present embodiment, four) component mounting means 10 arranged in a row in the left-right direction.
The shaft 30, the support member 40, the vertical movement means 50, the rotation means 60, the linear way 70, the shaft support bracket 80, etc. are generally configured. The negative pressure is supplied to the suction nozzle 20 by a vacuum generator (not shown).

The shaft 30 has a suction nozzle 2 at its lower end.
It is a rod-shaped member provided with a hollow structure arranged along the up-down direction while holding 0. Although detailed description will be given later, a plurality of ball grooves (not shown) extending in the axial direction are formed on the side surface of the shaft 30, and the shaft 30 transmits the driving force of the rotary motor 61 to the suction nozzle 20. It also has a function as a spline shaft for the ball spline.

The support member 40 is a member having a substantially U-shape in side view, which supports various devices constituting the component mounting means 10, and has a vertical portion 41 extending in the vertical direction (vertical direction) and a vertical portion 41.
An upper extending portion 42 extending forward from the upper end of the
And a lower extension part 43 extending forward from the lower end of the.

The vertical portion 41 is formed in a substantially U-shape in plan view having a groove 41a extending in the vertical direction on the front surface thereof, and the rail 71 of the linear way 70 is mounted inside the groove. The rail 71 supports a slide unit 72 of the linear way 70 slidably in the vertical direction, and the slide unit 72 is joined to a shaft supporting bracket 80.

The shaft-supporting bracket 80 is a member that extends forward while being joined to the slide unit 72 at its rear portion. Shaft support bracket 80
An opening (not shown) is formed in the front part of the, and the screw shaft 52a of the ball screw 52 is inserted into the opening.
Also, the nut 52b (ball nut) of the ball screw 52
Is joined to the shaft supporting bracket 80. Then, the ball nut 5 is rotated by the rotation of the screw shaft 52a around the shaft.
2b and the shaft-supporting bracket 80 are integrally moved vertically while being guided by the linear way 70.

An opening (not shown) for inserting the shaft 30 is also formed in the substantially central portion of the shaft supporting bracket 80. A ball bearing 82 is fixed to the shaft 30 inserted through the opening so as to sandwich the shaft supporting bracket 80 from above and below.
By the action of the ball bearing 82, the shaft 30 is rotatably supported by the shaft supporting bracket 80 and is vertically moved integrally with the shaft supporting bracket 80. Instead of using the ball bearing 82, a means that can move integrally with the shaft supporting bracket 80 while the shaft 30 is rotatably supported by the shaft supporting bracket 80 may be used.

An opening (not shown) is formed vertically through the front portion of the upper extension portion 42, and the upper extension portion 42 is formed.
On the lower surface of the front part of the
a is attached. Then, the Z-axis motor 51 is
The rotary shaft 51a is attached to the upper extension part 42 through the Z-axis motor bracket 42a in a state where the rotary shaft 51a is inserted into the opening. In addition, an opening (not shown) that vertically penetrates is also formed in a substantially central portion of the upper extending portion 42 in the front-rear direction,
A ball bearing 42b as a bearing is arranged on the inner peripheral portion of this opening. The screw shaft 52a of the ball screw 52 is rotatably supported around the shaft by a ball bearing 42b while being inserted into the opening.

The lower extension portion 43 includes a ball spline support portion 43a formed in a rectangular frame shape in a side view, and a rotary motor support portion 43b extending forward from the front surface of the bearing portion. An opening (not shown) that penetrates vertically is formed in the front portion of the rotation motor support portion 43b, and a substantially rectangular rotation motor bracket 43c is attached to the front upper surface of the rotation motor support portion 43b. Has been. The rotary motor 61 is attached to the rotary motor support portion 43b via the rotary motor bracket 43c with the rotary shaft 61a inserted through the opening.

The upper and lower plates constituting the ball spline support portion 43a are formed with openings (not shown) penetrating vertically, and the spline housing 62b, which will be described later, is rotated about the axis in both upper and lower openings. A bearing 43d that freely supports is provided.

The vertical moving means 50 is arranged to move the suction nozzle 20 up and down, and a driving force for transmitting the driving force of the Z-axis motor 51 (vertical moving motor), the ball screw 52, and the vertical moving motor 50 to the shaft 30. A transmission unit 53 (driving force transmission unit for vertical movement motor) and the like are provided. The Z-axis motor 51 is
As described above, the rotating shaft 51a is joined to the upper extending portion 42 through the Z-axis motor bracket 42a in a state where the rotating shaft 51a is inserted into the opening of the upper extending portion 42, and the ball screw 52 is also used.
The screw shaft 52a of the ball bearing 42b as described above.
Is rotatably supported around the axis.

The driving force transmitting means 53 is a driving pulley 53a.
(Drive pulley for vertical movement motor), driven pulley 53b (driven pulley for vertical movement motor), timing belt 53c
(Timing belt for vertical movement motor). A drive pulley 5 is provided on each of the upper ends of the rotary shaft 51a and the screw shaft 52a.
3a and the driven pulley 53b are attached, and the drive pulley 5
A timing belt 53c is wound around 3a and a driven pulley 53b. The rotation of the rotary shaft 51a about the axis is transmitted to the screw shaft 52a via the timing belt 53c, the screw shaft 52a rotates about the shaft, and the ball nut 52b and the shaft supporting bracket 80 are integrated as described above. It is designed to move vertically. Although not shown, the Z-axis motor 51 is provided with an encoder for detecting the vertical position of the suction nozzle 20, and the control means uses the Z-axis based on an output signal transmitted from the encoder. The drive control of the motor 51 is performed.

The rotating means 60 is arranged to rotate the suction nozzle 20 about its axis, and comprises a rotating motor 61 and a driving force transmitting means 62. As described above, the rotary motor 61 is joined to the lower extension portion 43 via the rotary motor bracket 43c in a state where the rotary shaft 61a is inserted into the opening of the rotary motor support portion 43b. Driving force transmission means 62
The (rotating motor driving force transmitting means) is provided for transmitting the driving force of the rotating motor 61 to the shaft 30, and is mounted on the rotating shaft 61a of the rotating motor 61 (drive pulley for rotating motor), housing. And a timing belt 62c (rotation motor timing belt) that is wound around the drive pulley 62a and the driven pulley 62b.

As described above, a plurality of ball grooves extending in the axial direction are formed on the side surface of the shaft 30, and the shaft 30 functions as the spline shaft of the ball spline 63. The shaft 30 is inserted into a housing 63a of a ball spline 63 which is rotatably supported by bearings 43d arranged above and below the ball spline support portion 43a. Further, the nut 6 of the ball spline 63 is provided at a substantially central portion in the vertical direction of the shaft 30.
3b is fitted, and this nut 63b is attached to the housing 6
It is fixed inside 3a. Then, the rotary motor 61
When the rotary shaft 61a of the rotary shaft 61a rotates about its axis, the driven pulley 62b rotates via the drive pulley 62a and the timing belt 62c, and the shaft 30 and the suction nozzle via the housing 63a and the nut 63b joined to the driven pulley 62b. 20 is designed to rotate about an axis. Although not shown, the rotary motor 61 is provided with an encoder for detecting the rotational position (rotation angle) of the suction nozzle 20 around the axis, and the encoder is controlled based on an output signal transmitted from the encoder. The means is a rotary motor 61
Drive control.

A mounting head 5 is constructed by connecting four component mounting means 10 having such a structure in the left-right direction, as shown in FIGS. Explaining the configuration of the mounting head 5, each shaft 30 is arranged on a straight line L1 extending in the left-right direction when seen in a plan view.
The rotary shaft 61a of each rotary motor 61 is arranged on the arc L2 so that the axial distances R1 to R4 from the corresponding shaft 30 are the same.

The screw shaft 52a of each ball screw 52 is also arranged on a straight line L3 extending in the left-right direction. Also,
The rotary shaft 51a of each Z-axis motor 51 corresponds to the corresponding screw shaft 5
Arc L4 so that axial distances R5 to R8 with 2a are the same
It is located above. Further, the axial center distance T1 between the shafts 30 and the axial center distance T2 between the screw shafts 52a are the same. The shafts 30 are arranged so that the axial center distance T1 between the shafts 30 becomes smaller than the axial center distance T3 between the rotary shafts 61a of the rotary motor 61, and the screw shaft 52
The screw shaft 52 is arranged so that the axial center distance T2 between a and the shaft center distance T4 between the rotating shafts 51a of the Z-axis motor 51 becomes smaller than the axial center distance T4.
a is provided.

As shown in FIGS. 2 and 3, two driven pulleys 62b adjacent to each other are mounted so as to be vertically overlapped with each other so that the driven pulleys 62b do not interfere with each other when the driven pulleys 62b are driven. Has become. Note that the diameter of the driven pulley 62b is set to such an extent that the two adjacent driven pulleys 62b overlap each other in this manner, for example, to secure a reduction ratio and positioning accuracy when transmitting the driving force of the rotary motor 61 to the shaft 30 side. In consideration of the above, when the diameters of the driven pulleys 62b adjacent to each other are small enough not to interfere with each other during driving, it is not necessary to mount the two driven pulleys 62b adjacent to each other vertically.

According to the mounting head 5 shown in the present embodiment, a plurality of shafts 30 and a rotary shaft 61a of the rotary motor 61 corresponding to the shaft 30 have the same axial center distances R1 to R4. The rotary shaft 61a of the rotary motor 61 is arranged on the same arc L2, and the axial center distances R5 to R8 between the screw shaft 52a and the rotary shaft 51a of the Z-axis motor 51 corresponding to the screw shaft 52a are the same. Thus, the rotary shafts 51a of the plurality of Z-axis motors 51 are arranged on the same arc L4. Further, the axial distance T1 between the shafts 30 is made smaller than the axial distance T3 between the rotary shafts 61a of the rotary motor 61,
The axial center distance T2 between the screw shafts 52a is smaller than the axial center distance T4 between the rotary shafts 51a of the Z-axis motor 51. Therefore, the space around the shaft 30 and the screw shaft 52a can be reduced in the left-right direction, and the mounting head 5 can be downsized.

Further, since the two adjacent driven pulleys 62b are vertically overlapped with each other and attached, even if the axial distance T1 between the shafts 30 is reduced, each driven pulley 62b is prevented from interfering with the adjacent driven pulleys 62b. The pulley 62b can be rotated. Further, since the four component mounting means 10 have the same structure, the component mounting means 10
It is possible to share the members constituting the above, and it is possible to suppress the manufacturing cost of the mounting head 5.

The present invention is not limited to the above-mentioned embodiment, and the specific shape and structure can be changed appropriately. For example, in the present embodiment, the shafts 30 are arranged on the same straight line L1 in a plan view, and the axial center distances R1 to R4 between the shafts 30 and the rotary shafts 61a of the rotary motors corresponding to the shafts 30 are substantially the same. To be the same,
Each rotary shaft 61a of the rotary motor has the same circular arc L in plan view.
2 and further, the screw shaft 52a of the ball screw is arranged on the same straight line L3 in plan view, and the shaft of each screw shaft 52a and the rotary shaft 51a of the vertical movement motor corresponding to each screw shaft 52a. Although the rotation shafts 51a of the vertical movement motors are arranged on the same arc L4 in plan view so that the center distances R5 to R8 are substantially the same, the present invention is not limited to this, and the shaft 30 is not limited to the same straight line L1 in plan view. The rotary shaft 61a of the rotary motor corresponding to each shaft 30 may be arranged on the same arc L2 in plan view so that the axial distances R1 to R4 are substantially the same, or the ball screw Screw shafts 52a are arranged on the same straight line in plan view, and the rotary shafts 51a of the vertical movement motors corresponding to the screw shafts 52a are arranged on the same arc L4 in plan view so that the axial distances R5 to R8 are substantially the same. It may be provided only.

Further, the driven pulley 6 for the adjacent rotary motor
Although the upper and lower portions 2b are attached alternately and vertically, the present invention is not limited to this, and although not shown in the drawings, the adjacent vertical drive motor driven pulleys 53b may be vertically and alternately attached to each other. The vertical driven motor driven pulleys 53b that are adjacent to the motor driven pulley 62b may be attached so as to be vertically overlapped with each other. Further, in the present embodiment, the mounting head 5 is configured by connecting four component mounting means 10, but the present invention is not limited to this, and may be four or more or four or less. Further, the shape of the support member 40 is also substantially U-shaped in a side view in the present embodiment, but it is not limited to this, and for example, the upper extension part 42 and the lower extension part 43 of the support member 40 are vertically arranged. It may be extended rearward from the portion 41, and the attachment positions of the Z-axis motor 51 and the rotary motor 61 can be appropriately changed in accordance with such a change in the shape of the support member 40.

[0048]

According to the mounting head of the electronic component mounting apparatus of the first aspect, a plurality of shafts are arranged on the same straight line in a plan view, and the shaft and the shaft of the rotary motor corresponding to each shaft are provided. The rotation axes of the plurality of rotary motors are arranged on the same arc in a plan view so that the core distances are substantially the same. Therefore, it is not necessary to make the axial distance between the shafts the same as the axial distance between the rotary shafts of the rotary motor, so that the mounting head can be designed more freely and the mounting head can be downsized.
Further, since the component mounting means have the same shape and size, the constituent members of the component mounting means can be shared with each other, and the manufacturing cost of the mounting head can be suppressed.

According to the mounting head of the electronic component mounting apparatus of the second aspect, the same effect as that of the first aspect can be obtained, and the axial center distance between the shafts is determined from the axial center distance between the rotary shafts of the rotary motor. Since it is made smaller, the space around the shaft can be made smaller and the mounting head can be made smaller.

According to the mounting head of the electronic component mounting apparatus of the third aspect, the same effect as that of the first or second aspect can be obtained, and the driven motor driven pulleys adjacent to each other are vertically and alternately attached to each other. Even when the axial center distance between them is made small, the driven pulleys for adjacent rotation motors can be driven without interfering with each other.

According to the mounting head of the electronic component mounting apparatus of the fourth aspect, a plurality of screw shafts are arranged on the same straight line in a plan view, and each screw shaft and a rotary shaft of a vertical movement motor corresponding to each screw shaft. The rotation axes of the plurality of vertical movement motors are arranged on the same circular arc in a plan view so that the axial center distances thereof are substantially the same. Therefore, it is not necessary to make the axial center distance between the screw shafts the same as the axial center distance between the rotary shafts of the vertical movement motor, so that the degree of freedom in designing the mounting head is improved and the mounting head can be downsized. Further, since the component mounting means have the same shape and size, the constituent members of the component mounting means can be shared with each other, and the manufacturing cost of the mounting head can be suppressed.

According to the mounting head of the electronic component mounting apparatus of the fifth aspect, the same effect as that of the fourth aspect can be obtained, and the axial center distance between the screw shafts is set between the rotary shafts of the vertical movement motors. Since the distance is smaller than the axial center distance, the space around the screw shaft can be reduced and the mounting head can be downsized.

According to the mounting head of the electronic component mounting apparatus of the sixth aspect, the same effect as that of the fourth or fifth aspect can be obtained, and the adjacent driven pulleys for the vertical movement motors are attached so as to be vertically overlapped with each other. Even when the axial center distance between the screw shafts is reduced, it is possible to drive the adjacent driven pulleys for vertical movement motors without interfering with each other.

According to the mounting head of the electronic component mounting apparatus of the seventh aspect, the shafts are arranged on the same straight line in a plan view, and the shafts and the rotary shafts of the rotary motors corresponding to the respective shafts are arranged. The rotation shafts of the rotary motor are arranged on the same arc in plan view, and the screw shafts of the ball screw are arranged on the same straight line in plan view so that the axial center distances are substantially the same. And the rotation shafts of the vertical movement motors are arranged on the same circular arc in a plan view so that the axial center distances of the screw shafts and the rotation shafts of the vertical movement motors are substantially the same. Therefore, the axial distance between the shafts need not be the same as the axial distance between the rotary shafts of the rotary motor, and the axial distance between the screw shafts is the same as the axial distance between the rotary shafts of the vertical movement motor. Since it is unnecessary to design the mounting head, the flexibility of designing the mounting head is improved, and the mounting head can be downsized. Further, since the component mounting means have the same shape and size, the constituent members of the component mounting means can be shared with each other, and the manufacturing cost of the mounting head can be suppressed.

According to the mounting head of the electronic component mounting apparatus of the eighth aspect, the same effect as that of the seventh aspect can be obtained, and the axial center distance between the shafts is set to the axial center between the rotary shafts of the rotary motor. Since the axial center distance between the screw shafts is smaller than the axial center distance between the rotary shafts of the vertical movement motor, the space around the shaft and the screw shaft can be reduced, and the mounting head can be downsized. be able to.

According to the mounting head of the electronic component mounting apparatus of the ninth aspect, the same effect as that of the seventh or eighth aspect can be obtained, and the adjacent rotary motor driven pulleys and the adjacent vertical motor driven pulleys can be provided. Since at least one of them is installed by alternately stacking vertically, even if the axial distance between the shafts or the axial distance between the screw shafts is reduced, the adjacent rotary motor driven pulley and the adjacent vertical motor driven pulley will be installed. It can be driven without interference.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts showing a structure of an electronic component mounting apparatus according to an embodiment.

FIG. 2 is a side view showing the structure of a mounting head.

FIG. 3 is a plan view showing a structure of a mounting head.

FIG. 4 is a plan view showing a structure of a mounting head.

FIG. 5 is a side view showing the structure of a conventional mounting head.

FIG. 6 is a plan view showing the structure of a conventional mounting head.

[Explanation of symbols]

L1 straight line L2 arc L3 straight line L4 arc R1 to R4 axial distance R5 to R8 axial distance Axial distance between T1 shafts T2 axial distance between screw shafts Axial distance between rotating shafts of T3 rotary motor T4 Axial distance between rotary shafts of vertical motion motor 5 mounting head 10 Parts mounting means 20 Suction nozzle 30 shaft 51 Vertical movement motor (Z-axis motor) 51a Rotating shaft of vertical movement motor 52 ball screw 52a Ball screw screw shaft 53 Driving force transmission means for vertical movement motor 53a Vertical drive motor drive pulley 53b Driven pulley for vertical movement motor 53c Timing belt for vertical movement motor 61 rotary motor 61a Rotating shaft of rotary motor 62 Drive power transmission means for rotary motor 62a Drive pulley for rotary motor 62b Driven pulley for rotary motor 62c Timing belt for rotary motor 80 bracket

Claims (9)

[Claims] 1. A suction nozzle that vacuum-sucks an electronic component and mounts it at a predetermined position on a circuit board, a shaft that is arranged along the up-down direction and holds the suction nozzle at the lower end, and a shaft that holds the shaft in the up-down direction. Component mounting means including a vertical movement motor that drives the shaft, a bracket that supports the shaft, a ball screw that transmits the driving force of the vertical movement motor to the bracket, and a rotation motor that rotationally drives the shaft around the axis. A mounting head of an electronic component mounting apparatus configured by arranging a plurality of, wherein the shafts are arranged on the same straight line in a plan view,
The rotary shafts of the rotary motors are arranged on the same circular arc in a plan view so that the shaft centers of the shafts and the rotary shafts of the rotary motors corresponding to the respective shafts are substantially the same. Mounting head for electronic component mounting equipment. 2. The mounting head of the electronic component mounting apparatus according to claim 2, wherein the mounting head of the electronic component mounting apparatus according to claim 1, wherein the axial center distance between the shafts is the rotational axis of the rotary motor. A mounting head for an electronic component mounting apparatus, wherein the mounting head is smaller than the axial center distance. 3. The mounting head of the electronic component mounting apparatus according to claim 3, wherein the mounting head is the mounting head of the electronic component mounting apparatus according to claim 1, wherein the rotating head transmits the driving force of the rotary motor to the shaft. The motor drive force transmission means includes a rotary motor drive pulley attached to the rotary shaft of the rotary motor, a rotary motor driven pulley attached to the shaft, and the rotary motor drive pulley and the rotary motor driven pulley. It is equipped with a timing belt for a rotating motor that is wound around,
A mounting head for an electronic component mounting apparatus, in which driven pulleys for adjacent rotary motors are mounted so as to be vertically overlapped with each other. 4. A suction nozzle that vacuum-sucks an electronic component and mounts it at a predetermined position on a circuit board, a shaft that is disposed along the up-down direction and holds the suction nozzle at the lower end, and a shaft that vertically moves the shaft. Component mounting means including a vertical movement motor that drives the shaft, a bracket that supports the shaft, a ball screw that transmits the driving force of the vertical movement motor to the bracket, and a rotation motor that rotationally drives the shaft around the axis. A mounting head of an electronic component mounting apparatus configured by connecting a plurality of, wherein the screw shafts of the ball screw are arranged on the same straight line in plan view, and each screw shaft corresponds to each screw shaft. An electronic part characterized in that the rotary shafts of the vertical movement motors are arranged on the same circular arc in a plan view so that the axial center distances of the vertical movement motors are substantially the same. The mounting head of the mounting apparatus. 5. The mounting head of the electronic component mounting apparatus according to claim 5, wherein the mounting head of the electronic component mounting apparatus according to claim 4, wherein the axial center distance between the screw shafts is the same as that of the vertical movement motor. A mounting head for an electronic component mounting device, which is smaller than the axial center distance between the rotating shafts. 6. The mounting head of the electronic component mounting apparatus according to claim 6, which is the mounting head of the electronic component mounting apparatus according to claim 4, wherein the driving force of the vertical movement motor is transmitted to the shaft. The vertical drive motor drive force transmission means includes a vertical drive motor drive pulley attached to the rotary shaft of the vertical drive motor, a vertical drive motor driven pulley attached to the screw shaft, and these vertical drive motor drive pulleys. An electronic component mounting apparatus, comprising: a vertical drive motor driven pulley and a vertical drive motor timing belt that is wound around the vertical drive motor driven pulley; and adjacent vertical drive motor driven pulleys that are vertically overlapped with each other. Wearing head. 7. A suction nozzle for vacuum-suctioning an electronic component and mounting it at a predetermined position on a circuit board, a shaft arranged along the up-down direction and holding the suction nozzle at a lower end, and a shaft for vertically moving the shaft. Component mounting means including a vertical movement motor that drives the shaft, a bracket that supports the shaft, a ball screw that transmits the driving force of the vertical movement motor to the bracket, and a rotation motor that rotationally drives the shaft around the axis. A mounting head of an electronic component mounting apparatus configured by arranging a plurality of, wherein the shafts are arranged on the same straight line in a plan view,
The rotation shafts of the rotation motors are arranged on the same arc in a plan view so that the axial distances between the shafts and the rotation shafts of the rotation motors corresponding to the shafts are substantially the same. The screw shafts are respectively arranged on the same straight line in a plan view, and the screw shafts of the vertical movement motors are arranged such that the axial distances between the screw shafts and the rotation shafts of the vertical movement motors corresponding to the screw shafts are substantially the same. A mounting head for an electronic component mounting apparatus, wherein rotating shafts are respectively arranged on the same arc in a plan view. 8. The mounting head of the electronic component mounting apparatus according to claim 8, wherein the mounting head of the electronic component mounting apparatus according to claim 7, wherein an axial center distance between the shafts is a rotation axis of the rotary motor. A mounting head of an electronic component mounting apparatus, wherein the axial center distance between the screw shafts is smaller than the axial center distance between the screw shafts. 9. The mounting head of the electronic component mounting apparatus according to claim 9, wherein the mounting head is the mounting head of the electronic component mounting apparatus according to claim 7, wherein the rotating head transmits the driving force of the rotary motor to the shaft. The motor drive force transmission means includes a rotary motor drive pulley attached to the rotary shaft of the rotary motor, a rotary motor driven pulley attached to the shaft, and the rotary motor drive pulley and the rotary motor driven pulley. A vertical motor for driving a vertical motor, wherein the vertical motor driving force transmission means for transmitting the driving force of the vertical motor to the shaft is attached to the rotary shaft of the vertical motor. Drive pulley, driven pulley for vertical movement motor attached to the screw shaft, drive pulley for vertical movement motor, and vertical movement motor A vertical drive motor timing belt that is wound around the driven pulley, and at least one of the adjacent rotary motor driven pulley and the adjacent vertical drive motor driven pulley that are vertically stacked alternately. A mounting head for an electronic component mounting device characterized by: