JP3614721B2 - Component mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a component mounting apparatus for mounting a component such as an electronic component on a substrate such as a printed circuit board.
[0002]
[Prior art]
As a conventional component mounting apparatus, for example, an apparatus configured as shown in FIG. 4 is known. Hereinafter, a description will be given with reference to FIG.
[0003]
In FIG. 4, a component supply unit 102 that houses and automatically supplies the electronic component 101 and a substrate positioning unit 104 that positions the substrate 103 on which the electronic component 101 is mounted in the XY2 directions orthogonal to each other are disposed. Reference numeral 105 denotes an index unit that intermittently moves. A first output shaft 105 a extending below the index unit 105 is attached with a head portion 107 that holds a plurality of suction nozzles 106 at the periphery. . A rotating body 108 is fixed to a second output shaft 105b extending to the side of the index unit 105. Reference numeral 109 denotes a belt, one of which is engaged with a rotating body 108 and the other is engaged with a rotating body 111 fixed to one end of a cam shaft 110.
[0004]
The cam shaft 110 is rotatably held by a bearing portion (not shown), and a plate cam 112 is fixed. A drive unit 113 is disposed above the plate cam 112. The drive unit 113 includes a first drive lever 114 that is pivotally supported by a central portion CH3 and is rotatably supported. The first drive lever 114 has a cam follower 115 that follows the head of the plate cam 112 at one end. Is attached to the plate cam 112 side by a spring 116 and swings following the head of the plate cam 112 as the cam shaft 110 rotates. A first connecting link 117 is connected to the other end of the first drive lever 114, and a link block 118 is rotatably supported by the other end of the first connecting link 117 and a fulcrum pin 123. The other end of the second connection link 119 and one end of the second connection link 119 are connected to the connection pin 120. The other end of the second connection link 119 is connected to one end of a second drive lever 121 that is pivotally supported at the center portion CH4 and is rotatably supported. A lifting roller 122 rotatably attached to the other end of the second drive lever 121 is engaged with a part of the head portion 107 that can move the suction nozzle 106 up and down, and is biased by a spring 125 to be The second drive lever 121 is configured to follow the swing of the drive lever 121.
[0005]
The operation of the component mounting apparatus having the above configuration will be described. By the index unit 105, the first output shaft 105a and the head unit 107 start an intermittent rotation operation. The head unit 107 sucks and holds the component 101 automatically supplied from the component supply unit 102 at the component holding position by the suction nozzle 106 and transfers the suction nozzle 106 to the component mounting position. At the same time, when the second output shaft 105b and the rotating body 108 are intermittently rotated by the index unit 105, the rotating body 111 rotates via the belt 109, and the cam shaft 110 rotates. 112 also rotates. As the cam follower 115 follows along the lift of the plate cam 112, when the first drive lever 114 swings about the center portion CH3, the link block 118 is controlled to swing around the fulcrum pin 123. As the first and second links 117 and 119 move up and down, the second driving lever 121 swings and the lifting roller 122 engaged with the other end of the second driving lever 121 moves. By moving up and down, a part of the head portion 107 engaged with the roller 122 follows the vertical movement, so that the suction nozzle 106 moves up and down and is positioned. Install in place.
[0006]
In order to ensure the reliability of the above operation, the refueling operation to the cam follower 115 and the like was periodically performed manually using a refueling means (not shown) from a refueling port 124 provided in the first drive lever 114. .
[0007]
[Problems to be solved by the invention]
However, in the configuration as described above, in order to prevent seizure of the cam follower and the camshaft bearing, etc., which causes a decrease in reliability, it is necessary to periodically lubricate the grease and perform it manually. There is a problem that it takes time to maintain the reliability and the work efficiency is poor.
[0008]
In view of the above-described conventional problems, an object of the present invention is to provide a component mounting apparatus in which lubrication is automatically and reliably performed and high reliability can be obtained with high work efficiency.
[0009]
[Means for Solving the Problems]
The component mounting apparatus of the present invention includes a component supply unit that supplies a component, a substrate positioning unit that positions a substrate on which the component is mounted, and a head unit that includes a plurality of suction nozzles on the periphery for sucking and mounting the component. The suction nozzle has a drive section, and the suction nozzle is operated by operating the drive section in conjunction with a roller that moves following the lift as the plate cam rotates at each stop of the intermittently rotating head section. In a component mounting device that mounts on a board, a cam shaft and a roller, which are rotatably held and a plate cam is fixed, are arranged in an oil tank, and the plate cam and roller are immersed in oil. Since this is automatically and reliably performed, no manual refueling work is required, and high reliability can be ensured with high work efficiency. Further, between the plate cam and the roller and the roller are always lubricated with oil, and the roller can smoothly follow the lift of the plate cam, and the wear can be reduced.
[0010]
Further, when a plurality of plate cams are fixed to one cam shaft, and a plurality of rollers are arranged corresponding to the respective plate cams, a plurality of suction nozzles arranged around the head portion by one cam shaft are simultaneously provided. It can be operated.
[0011]
In addition, by providing an oil amount recognition unit that recognizes the amount of oil in the oil tank, it is possible to easily check the oil amount, prevent poor lubrication due to lack of oil, and further reduce the oil amount recognized by the oil amount recognition unit. If the display means is provided, the amount of oil can be more easily confirmed.
[0012]
In addition, providing an oil circulation part that can supply and collect oil in the oil tank can stably maintain high lubrication performance, and further adjust the oil amount to a predetermined amount based on the recognized oil amount As a result, more stable driving is obtained, and the reliability of the apparatus is improved. In addition, when the apparatus is moved, the oil can be collected once, and the oil can be supplied again after the movement.
[0013]
In addition, when the oil circulation unit has a filtering unit that removes foreign matters in the oil tank, the generated foreign matters can be removed and highly reliable lubrication can be maintained.
[0014]
In addition, when the drive unit has a drive lever that is rotatably supported and has a roller at one end, it can smoothly follow the lift of the plate cam and ensure stable operation.
[0015]
Further, when the oil tank has a seal portion that seals the outer periphery of the cam shaft, the cam shaft can be easily connected to a drive system outside the oil tank.
[0016]
Further, when the oil tank has a bearing that rotatably holds the cam shaft and is lubricated by the oil in the oil tank, the bearing of the cam shaft can also be lubricated by the oil in the oil tank.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a component mounting apparatus of the present invention will be described with reference to FIGS.
[0018]
In FIG. 1, a component supply unit 2 that stores and automatically supplies an electronic component 1, a substrate positioning unit 4 that positions a substrate 3 on which the electronic component 1 is mounted in XY2 directions orthogonal to each other, and a component supply unit 2 supplies the electronic component 1. A head portion 6 is provided in which a plurality of suction nozzles 5 for sucking the electronic component 1 and mounted on the substrate 3 positioned by the substrate positioning portion 4 are arranged to be movable up and down at the peripheral edge portion. The suction nozzle 5 repeatedly moves in the circumference between the component supply unit 2 and the substrate positioning unit 4 and is controlled to a necessary height according to the movement position. Reference numeral 7 denotes an index unit that intermittently moves. A head portion 6 is attached to a first output shaft 7 a extending below the index unit 7, and the head portion 6 is intermittently rotated at intervals of the suction nozzles 5. It is configured to perform the desired work at each stop position at the same time.
[0019]
A rotating body 8 is fixed to a second output shaft 7 b that extends to the side of the index unit 7. Reference numeral 9 denotes a belt, one of which is engaged with a rotating body 8 and the other is engaged with a rotating body 11 fixed to one end of the cam shaft 10. The cam shaft 10 is rotatably held by a bearing 12 and has a plate cam 13 fixed thereto.
[0020]
In FIGS. 1 and 2, reference numeral 14 denotes an oil tank. The plate cam 13 and the cam shaft 10 are immersed in the internal oil 27, and the bearing 12 of the cam shaft 10 is lubricated by the oil 27. One end of the camshaft 10 that fixes the rotating body 11 is extended to the outside of the oil tank 14, and the outer periphery of the camshaft 10 is sealed by a seal portion 16 in the through portion of the oil tank 14.
[0021]
A drive unit 15 that is actuated by the rotation of the plate cam 13 is disposed in the upper part of the oil tank 14. The drive unit 15 includes a first drive lever 17 that is pivotally supported by a central portion CH1. The first drive lever 17 is a roller 18 that follows one end along the head of the plate cam 13 at one end. Is attached to the plate cam 13 by the spring 19 and swings following the head of the plate cam 13 as the cam shaft 10 rotates. The oil tank 14 is deep enough for the roller 18 to be immersed in the oil 27, and the roller 18 is immersed in the oil. A first connection link 20 is connected to the other end of the first drive lever 17, and the other end of the first connection link 20, the other end of the link block 21, and one end of the second connection link 22. Are connected by a connecting pin 23. The link block 21 is rotatably supported by a fulcrum pin 28.
[0022]
The other end of the second connection link 22 is connected to one end of a second drive lever 24 pivotally supported by the center portion CH2 and is connected to the other end of the second drive lever 24 for raising and lowering. A roller 25 is rotatably attached. The raising / lowering roller 25 is engaged with a part of the head portion 6 capable of moving the suction nozzle 5 up and down, and is energized by a spring 26 so as to follow the swing of the second drive lever 24. Yes.
[0023]
In FIG. 3, 29 is an oil amount recognition unit that recognizes the amount of oil in the oil tank 14, and 30 is a control unit that displays the oil amount recognized by the oil amount recognition unit 29 to the operator. Reference numeral 31 denotes an oil circulation unit that supplies and recovers the oil 27 in the oil tank 14, and is provided with a filtration unit 32 that can remove foreign matters in the oil 27.
[0024]
Next, the operation of the electronic component mounting apparatus having the above configuration will be described. The index unit 7 causes the first output shaft 7a and the head unit 6 to start intermittent rotation. The head unit 6 sucks and holds the electronic component 1 automatically supplied from the component supply unit 2 at the component holding position by the suction nozzle 5, and transfers the suction nozzle 5 to the component mounting position. At the same time, when the second output shaft 7 b and the rotating body 8 rotate intermittently by the index unit 7, the rotating body 11 rotates via the belt 9, and the cam shaft 10 rotates in the oil 27 of the oil tank 14. As a result, the plate cam 13 also rotates.
[0025]
When the roller 18 follows the lift of the plate cam 13 and the first drive lever 17 swings around the center portion CH1, the link block 21 is controlled to swing around the fulcrum pin 28. The first and second connecting links 20, 22 move up and down, and the second drive lever 24 swings accordingly, and the lift is engaged with the other end of the second drive lever 24 accordingly. When the roller 25 is moved up and down, a part of the head portion 6 with which the lifting roller 25 is engaged follows the vertical movement, so that the suction nozzle 5 is moved up and down and positioned. The electronic components 1 are sequentially mounted.
[0026]
The oil amount in the oil tank 14 is recognized by the oil amount recognition unit 29, and the control unit 30 displays the recognized oil amount to the operator. Further, in order to adjust the oil amount recognized by the oil amount recognition unit 29 to a predetermined amount set in advance, the oil circulation unit 31 supplies and recovers the oil 27 according to a command from the control unit 30.
[0027]
【The invention's effect】
According to the component mounting device of the present invention, the cam shaft, which is rotatably held as described above and to which the plate cam is fixed, and the roller that follows the lift of the plate cam are disposed in the oil tank, Since the roller is immersed in oil, lubrication is performed automatically and reliably, eliminating the need for manual refueling work, ensuring high work efficiency and high reliability. Lubricated with oil, the roller smoothly follows the lift of the plate cam, and the wear of them can be reduced.
[0028]
Further, when a plurality of plate cams are fixed to one cam shaft, and a plurality of rollers are arranged corresponding to the respective plate cams, a plurality of suction nozzles arranged around the head portion by one cam shaft are simultaneously provided. It can be operated.
[0029]
In addition, by providing an oil amount recognition unit that recognizes the amount of oil in the oil tank, it is possible to easily check the oil amount, prevent poor lubrication due to lack of oil, and the oil amount recognized by the oil amount recognition unit By providing a means for displaying the oil amount, the amount of oil can be more easily confirmed.
[0030]
In addition, providing an oil circulation part that can supply and collect oil in the oil tank can stably maintain high lubrication performance, and further adjust the oil amount to a predetermined amount based on the recognized oil amount As a result, more stable driving can be obtained, and the reliability of the apparatus is improved. In addition, when the apparatus is moved, the oil can be collected once, and the oil can be supplied again after the movement.
[0031]
In addition, when the oil circulation unit has a filtering unit that removes foreign matters in the oil tank, the generated foreign matters can be removed and highly reliable lubrication can be maintained.
[0032]
In addition, when the drive unit has a drive lever that is rotatably supported and has a roller at one end, it can smoothly follow the lift of the plate cam and ensure stable operation.
[0033]
Further, when the oil tank has a seal portion that seals the outer periphery of the cam shaft, the cam shaft can be easily connected to a drive system outside the oil tank.
[0034]
Further, when the oil tank has a bearing that rotatably holds the cam shaft and is lubricated by the oil in the oil tank, the bearing of the cam shaft can also be lubricated by the oil in the oil tank.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional front view of a component mounting apparatus according to an embodiment of the present invention.
FIG. 2 is a cross-sectional side view of an essential oil tank of the same embodiment.
FIG. 3 is a perspective view showing a system configuration of the embodiment.
FIG. 4 is a partial cross-sectional front view of a conventional component mounting apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electronic component 2 Component supply part 3 Board | substrate 4 Board | substrate positioning part 5 Adsorption nozzle 6 Head part 10 Cam shaft 12 Bearing 13 Plate cam 14 Oil tank 15 Drive part 16 Seal part 17 First drive lever 18 Roller 27 Oil 29 Oil amount recognition Part 30 Control part (display means)
31 Oil circulation part 32 Filtration part

Claims (10)

A head unit that intermittently rotates, including a component supply unit that supplies components, a substrate positioning unit that positions a substrate on which the component is mounted, and a head unit that includes a plurality of suction nozzles on the periphery for sucking and mounting the component In the component mounting device for simultaneously performing work by operating the suction nozzle at the drive unit at each stop position, and mounting the component on the board, the cam shaft that is rotatably held and the plate cam is fixed, and the drive unit A component mounting apparatus comprising: a roller that follows the outer shape of the plate cam in the oil tank; and a plate cam and roller immersed in oil. A component supply unit for supplying components, a substrate positioning unit for positioning a substrate on which the component is mounted, a head unit having a plurality of suction nozzles on the periphery for sucking and mounting the component, and a suction nozzle drive unit are provided. A component mounting device that mounts a component on a substrate by operating a suction nozzle in conjunction with a roller that moves following the lift of the plate cam when the head portion that rotates intermittently stops. The component mounting device according to claim 1, wherein the cam shaft and the roller, which are rotatably held and the plate cam is fixed, are arranged in an oil tank, and the plate cam and the roller are immersed in oil . 3. The component mounting apparatus according to claim 1, wherein a plurality of plate cams are fixed to one cam shaft, and a plurality of rollers are arranged corresponding to each plate cam . 3. The component mounting apparatus according to claim 1, further comprising an oil amount recognition unit for recognizing the amount of oil in the oil tank . 5. The component mounting apparatus according to claim 4, further comprising means for displaying the oil amount recognized by the oil amount recognition unit . The component mounting apparatus according to any one of claims 1 to 5, further comprising an oil circulation section capable of supplying and collecting oil in the oil tank . 7. The component mounting apparatus according to claim 6, wherein the oil circulation part is provided with a filtration part for removing foreign substances in the oil tank . The component mounting apparatus according to claim 1, wherein the drive unit includes a drive lever that is rotatably supported and has a roller provided at one end thereof. 3. The component mounting apparatus according to claim 1, wherein the oil tank has a seal portion that seals the outer periphery of the cam shaft. 3. The component mounting apparatus according to claim 1, wherein the oil tank includes a bearing that rotatably holds the cam shaft and is lubricated with oil in the oil tank.

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