KR100604331B1 - Head for Surface Mounting Device - Google Patents

Abstract

Disclosed is a head for a component mounter. The disclosed component mounter head includes a frame; A housing having a plurality of spindle tubes rotatably mounted to the frame; A spindle splined to each of the spindle tubes; Lifting means installed on the frame to lift and lower the spindle; And a driving means installed on the frame and rotating the plurality of spindle tubes to forward and reverse rotation of each spindle coupled thereto. According to the present invention, there is an advantage that high-speed mounting of parts is possible.

Description

Head for Surface Mounting Device

1 is a front view schematically showing the configuration of a head for a component mounter according to the present invention.

FIG. 2 is a schematic perspective view of an exploded and assembled part of FIG. 1;

3 is a schematic plan view from one side of FIG. 1 to show the rotational motion of the spindle;

<Explanation of symbols for the main parts of the drawings>

10. Main frame 11. First drive motor

12. Connecting shaft 13. Spindle

14. Second Gear 15. Third Gear

16. Second Timing Belt 17. Idle Wheel

18. Suction nozzle 20. Part alignment

21, 29, 34. Through hole 22. Vertical guide member

23. Sliding bearing 24. Spindle guide member

25. Belt fixing part 26. First timing belt

27. Housing 30. Side frame

31. 2nd drive motor 32. 1st gear

33. Idle gear 41. Fastening member

50. Circuit Board

TECHNICAL FIELD The present invention relates to a head for a component mounter, and more particularly, to an improved head for a component mounter so that the device can be simplified, lighter, and the performance of the device can be improved.

Component mounting apparatuses are used to automatically mount a semiconductor device such as a general integrated circuit (IC) or a high density integrated circuit, or an electronic component such as a diode, a capacitor, a resistor, or the like to a printed circuit board (PCB). Such a component mounting apparatus includes a conveyor apparatus for guiding a printed circuit board to a predetermined position, a component stage for supporting various electronic components to be mounted on the printed circuit board, and a vertical component for mounting the electronic components supported on the component stage to the substrate. It includes a head for the component mounter that moves to absorb / detach the electronic component.

The component mounter head portion is provided with adsorption means including a nozzle for adsorbing the electronic component by vacuum pressure. The component mounter head portion vertically and horizontally moves on the substrate support stage and the upper portion of the component stage. In addition, an apparatus is provided for rotating a nozzle that sucks the electronic component at a predetermined angle in order to adjust the mounting angle when the electronic component is mounted.

As described above, in a general component mounting head for automatically seating electronic components on a printed circuit board, vertical and rotational components capable of absorbing one electronic component at a time in one component alignment part in the alignment method of each electronic component are used. Adsorption is carried out by the spindle, and the electronic component is seated on a predetermined printed circuit board after XY movement of the head of the component mounter. In general, one head portion has one to three adsorption portions. As a result, the head unit sucks one to three electronic components sequentially from the component supply unit where the electronic components are provided, and moves the electronic components to seat the electronic components.

In addition, the specific order from the feeding of the printed circuit board to the mounting of the electronic component by the component mounter depends on the characteristics of the printed circuit board and the type and quantity of electronic components to be seated throughout the printed circuit board and their respective positions. Is determined. In addition, the head controller performs an initial setting where the initial position of each electronic component and an appropriate nozzle are located on each electronic component. When the printed circuit board is fed, the head unit is controlled by the controller. Is moved to the component supply unit while the electronic component is mounted, and the electronic component is sucked, and the alignment of the electronic component within the alignment unit is aligned with the angle of the part where the electronic component is to be seated.

After this series of steps, the head moves to the printed circuit board, and the adsorbed electronic components are placed on the printed circuit board. Here, one spindle corresponds to one alignment and aligns. As a result, the expensive parts aligning part and the head part have little utilization and have a factor of cost increase, and in performing the function of the high speed chip mount, the vibration caused by the increase of the weight of the head part that moves overall when adding the head part, High power drive requirements, and control is difficult.

In addition, since the size of the parts aligning unit increases, the size of the overall head of the component mounter increases and it is difficult to design.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a head for a component mounter which can be reduced in manufacturing cost and size thereof and can be easily designed.

Head for mounting parts of the present invention for achieving the above object, the frame; A housing having a plurality of spindle tubes rotatably mounted to the frame; A spindle splined to each of the spindle tubes; Lifting means installed on the frame to lift and lower the spindle; And a driving means installed on the frame and rotating the plurality of spindle tubes to forward and reverse rotation of each spindle coupled thereto.

In the present invention, the drive means includes a drive motor installed on the frame, drive and driven pulleys installed on the rotating shaft and the spindle tube of the drive motor, and the belt is caught by the drive and driven pulley .

In the present invention, the lifting means, the drive motor is installed in the frame for lifting each spindle; A drive pulley installed on the rotation shaft of each drive motor and a driven pulley installed on the frame; Belts which are respectively caught by the driving pulley and the driven pulley; Support members for fixing the belts and being mounted up and down relative to the housing and supporting the respective spindles; And a sliding member installed between the support members and the housing to slide the support members.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 schematically shows a front view of a head for a component mounter according to the present invention.

Referring to the drawings, the head for component mounter according to the present invention, the main frame 10, the housing 27 provided in the lower portion in the main frame 10, and the side frame provided in the side of the main frame 10 30 and a component alignment unit 20 fixed to the lower side of the housing 27.

A first driving motor 11 is installed above the main frame 10, and a connecting shaft 12 is rotatably installed on the main frame 10 to be rotated by the first driving motor 11. A plurality of spindles 13 are supported by the housing 27 and rotatably penetrate the upper portion of the component alignment unit 20. At the lower end of the spindle 13, suction nozzles 18 for absorbing electronic components are respectively installed. Designated by reference numeral 50 in contact with the end of the suction nozzle 18 shows a circuit board into which an electronic component is inserted by the suction nozzle 14.

Two spindles 13 are installed in a pair, and the spindles 13 are splined with the spindle tube 28 inserted into the housing 27.

FIG. 2 is a perspective view illustrating a state in which the component mounting head of FIG. 1 is partially disassembled and assembled.

1 and 2, through-holes 29 are formed in the component alignment unit 20, and a housing 27 having an insertion hole formed therein is connected to the through-holes 29. As such, the spindle 13 is splined to the spindle tube 28 and inserted into the insertion hole of the housing 27, and a vertical guide member is disposed at one side of the housing 27 through which the spindle 13 is installed. 22) is fixedly installed. The vertical guide member 22 is provided with a sliding bearing 23 which is guided and lifted by the vertical guide member 22 to be slidable. In addition, the spindle guide member 24 to which the spindle 13 is inserted and supported is installed at one side of the sliding bearing 23. The spindle guide member 24 is provided with a belt fixing part 25 and is supported by the belt fixing part 25 so that the first timing belt 26 is installed.

The spindle 13 is connected to the housing through an insertion hole formed in the main frame 10, a through hole 21 of the spindle guide member 24, an insertion hole of the housing 27, and a through hole 29 of a component alignment part. 27, respectively, and two vertical guide members 22 and two spindle guide members 24 are provided. Accordingly, two belt fixing portions 25 and the first timing belt 26 installed on the spindle guide member 24 are respectively installed to correspond thereto. The above-mentioned parts are each fastened by a predetermined fastening member 41. The fastening member 41 is not shown in the drawings, but is not limited to a specific fastening member.

Although not shown in the drawings, the fixing parts 25 may be disposed to face each other to the left and right of the first timing belt 26 so that the respective spindles 13 reciprocally cross each other to align and mount the parts. It can be done so.

Two side driving motors 31 driving the respective first timing belts 26 are installed on the side frame 30, respectively, above and below the side frame 30, and the second driving motor. First gears 32 for rotating the first timing belt 26 are respectively penetrated to the rotation shaft 31a of the 31. And idle gears 33 are installed on the upper and lower sides of the side frame 30 on the opposite side on which the second driving motor 31 is installed. In addition, the first gear 33 is inserted into the through hole 34 formed to face the side frame 30 diagonally.

Therefore, the first gear 32 and the idle gear 33 are respectively installed on the upper and lower portions of the side frame 30 so that the first timing belt 26 is the first gear 32 and the idle gear ( Respectively supported and rotated.

On the other hand, the structure for raising and lowering the spindle 13 is not limited to the first timing belt 26 as described above, and although not shown in the figure, a rack is formed on one side of the vertical guide member 24 It is fixed, and the pinion is installed on one side of the main frame 10 to the housing 27 to move the vertical guide member 24 up and down by a drive motor, so Z-axis control is possible. As described above, a person skilled in the art can easily use a structure capable of elevating the spindle 13 by applying the principles of the rack and the pinion.

3 is a schematic plan view from one side of FIG. 1 in which the spindle 13 and the connecting shaft 12 are installed.

3 and 1, respectively, a second gear 14 is installed in the connecting shaft 12 driven by the first driving motor 11, and a spindle tube coupled to the two spindles 13. The third gear 15 is installed in each. The second and third gears 14 and 15 are caught by a second timing belt 16 and are rotated by the second and third gears 14 and 15, in particular the second gear 14 and the third gear. An idle wheel 17 is installed at an intermediate level of 15 to allow the second timing belt 16 to rotate while receiving the elasticity of the idle wheel 16. Accordingly, the spindle tube is splined to the outside of the spindle 13 so that the spindle 13 can simultaneously rotate and lift. The head for the component mounter according to the invention consists of a dual spindle head and consists of three modules, which are all mounted on one X-axis. The component alignment unit 20 is quad aligned and recognizes and corrects the two spindles 13.

Referring to the operation of the head for the component mounter according to the present invention having the configuration as described above are as follows.

A housing 27 having two spindle tubes 28 rotatably installed on the lower side of the main frame 10 is installed, and the spindle tube 28 and the spindle 13 are splined together, The spindle 13 can be operated to move as well as to rotate. When the connecting shaft 12 rotates by the first driving motor 11, the second timing belt 16 rotates forward and reverse. The rotation of the second timing belt 16 is transmitted to the third gear 15 on which the second timing belt 16 is supported so that the spindle 13 rotates. In particular, since the second timing belt 16 is rotated while receiving the elasticity of the idle wheel 17 installed between the second gear 14 and the third gear 15, the rotational force of the connecting shaft 12 is changed to the spindle 13. To be delivered smoothly. Accordingly, the second gear 14 becomes a driving pulley and the third gear 15 becomes a driven pulley to rotate the second timing belt 16.

The two second driving motors 31 are installed at the side of the side frame 30 to rotate the first timing belt 26, and the spindle guide coupled to the first timing belt 26 by this rotational force. As the member 24 is lifted by the sliding bearing 23, the spindle 13 is also lifted. Similarly, the first gear 32 provided on the rotation shaft 31a of each of the second driving motors 31 becomes a driving pulley, and the idle gear 33 installed on the side frame 30 becomes a driven pulley, thereby providing the first pulley. The timing belt 26 is rotated.

As such, the spindle 13 is rotated by the first driving motor 11, and the spindle 13 is lifted by the two second driving motors 31. Therefore, the suction nozzle 18 installed at the lower end of the spindle 13 is driven. The suction nozzle 18 is moved up and down to suck and mount the electronic component by the two second driving motors 31, and the posture of the electronic component sucked by the suction nozzle 18 is set to the correct position. When the alignment is performed, the suction nozzle 18 is aligned by driving the first driving motor 11.

Meanwhile, in the above-described configuration of the component mounting head according to the present invention, the transfer of the mounting head head according to the alignment and the adsorption of components and the illustration and description of the sensor according to the operation are omitted, but only the configuration and operation according to the features of the present invention. As described above.

In the head for the component mounter according to the present invention operated as described above, the spindle 13 arranges parts for aligning electronic components by controlling rotation θ of two spindles 13 by one first driving motor 11. The parts 20, the head frame for installing the components of the device, the drive motor according to the rotation of the spindle 13, and the rotation control unit for controlling the rotation of the spindle 13 is reduced, so that the size of the device Of course, the weight of the device is reduced. In addition, as described above, since the number of components is reduced, vibration of the apparatus due to driving of the driving unit may be reduced, and the design of the apparatus may be facilitated.

In addition, since the number of adsorption parts can be combined to 1 to 6 in relation to the weight of the same head part, high-speed mounting can be realized because it can adsorb several parts at the same time and mount 6 parts in one cycle. Such high speed mounting becomes possible when the head part has three parts alignment parts.

As described above, the head for component mounter according to the present invention has the following effects.

Since two spindles are driven by one drive motor, the suction nozzles installed on the two spindles can be aligned at the same time, and the size and weight of the device can be reduced by providing one drive unit.

In addition, the overall power consumption and vibration of the device can be reduced, the design is easy, and the high-speed mounting is possible.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (3)

A frame; A housing having a plurality of spindle tubes rotatably mounted to the frame; A spindle splined to each of the spindle tubes; Lifting means installed on the frame so as to correspond to each of the spindles so that each of the spindles is individually lifted relative to the housing; And a driving means installed on the frame and rotating the plurality of spindle tubes to forward and reverse rotation of each spindle splined thereto. The method of claim 1, wherein the driving means, And a drive motor installed on the frame, drive and driven pulleys installed on the rotating shaft and the spindle tube of the drive motor, and a belt caught by the drive and driven pulleys. According to claim 1, The lifting means, A drive motor mounted to the frame to lift each spindle; A drive pulley installed on the rotation shaft of each drive motor and a driven pulley installed on the frame; Belts which are respectively caught by the driving pulley and the driven pulley; Support members for fixing the belts and being mounted up and down relative to the housing and supporting the respective spindles; And a sliding member installed between the support members and the housing to slide the support members.

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