KR20000065289A - Mounter Head of Surface Mounting Apparatus - Google Patents

Abstract

PURPOSE: A mounter head of a surface mounting device is provided to accurately mount a semiconductor device and an electrical part by using a variable pitch. CONSTITUTION: A mounter head absorbs a chip, and mounts the chip to a printed circuit board. A plate(16) can be moved to the right and left side along an X-axis frame. A driving motor(20,56) is installed at an upper end of the plate(16), and has a pulley at one end thereof. A ball screw nut(30) is separated from the driving motor(20,56) by a predetermined distance. A ball screw(28) has a pulley at one end thereof. The ball screw(28) is engaged with the ball screw nut(30), and is moved to the right and to the left. A moving plate(36) is installed on the right side of the plate(16), and can be moved to the right and to the left along the X-axis frame. The other end of the ball screw is inserted to the ball screw nut. A first nozzle assembly(102) and a second nozzle assembly(104) are installed at the lower end of the ball screw nut installed in the plate. A third nozzle assembly(106) and a fourth nozzle assembly(108) are installed at the lower portion of the ball screw nut installed in the moving plate(36).

Description

Mounter Head of Surface Mounting Apparatus

The present invention provides a surface mounter for mounting a semiconductor device and various electronic components on a printed circuit board in a surface mounter for mounting a surface mount component including various chips on a printed circuit board (PCB). More particularly, the present invention relates to a mounter head of a surface mounter capable of variable pitch so as to correspond to a pitch of a mounting component when mounting the mounting component on a printed circuit board.

In recent years in the development of electrical and electronic products, the trend has been to increase the density, miniaturization, and diversification of electronic components, and the development thereof is becoming more and more intense.

In particular, Surface Mounting Technology (SMT) using surface mounters for assembly production of printed circuit boards (PCBs) used in electrical and electronic components is being accelerated.

The surface mounter is a core equipment of the surface mount assembly equipment for mounting a surface mounting device (SMD) on a printed circuit board. The surface mounter receives various surface mount components from a component supplyer and transfers them to the mounting position of the printed circuit board. Equipment to be mounted on the substrate.

Types are classified into high-speed machines and general-purpose machines according to their functions. The high-speed machines are configured to assemble many parts in a short time, so the mounting speed is high, which is suitable for mass production, but the mounting precision is low. Since the machine is configured to be suitable for the mounting of various parts, the mounting precision is high and the mounting of various parts is possible.

The surface mounter is mounted from a feeder part for supplying mounting parts (hereinafter referred to as a "tape feeder"), an X-Y gantry part for determining a working position, a conveyor part for conveying a printed circuit board to be worked on, and a tape feeder. It consists of a head part etc. which pick up components one by one and mount them on a printed circuit board.

In general, the surface mounter refers to a device that mounts various electronic components including chips on a printed circuit board (PCB) and is also called a MOUNTER.

Looking at the structure of the above-mentioned mounter in more detail can be classified into several categories.

First, a base assay, a conveyor unit installed on an upper portion of the base assay and a printed circuit board for transporting a printed circuit board, and various chips or surface mount components for mounting components on a printed circuit board carried by the conveyor unit. Recognizing and correcting a part so that a feeder unit for supplying a battery, a mounter head assay for mounting each device supplied by the feeder unit, and various devices mounted by the mounter head assay can be correctly mounted The vision unit, the vision unit and the mounter head assembly is installed, the XY gantry portion for positioning by the table, and other parts.

The mounter head assay includes a mounter head, a drive motor for driving the mounter head, a suction nozzle for directly adsorbing parts, a nozzle chuck for fixing the adsorbed parts, and a nozzle for exchanging the nozzles. It consists of a nozzle changer and the like.

At this time, the mounter head is rotated 360 degrees to move along the coordinate axis of the R-axis for adjusting the rotation angle of the components adsorbed by the nozzle, and the Z-axis operating up and down to adsorb the components by the nozzle.

The 360 ° rotating nozzle shaft, that is, the R axis is rotated by the drive motor, and the vertical motion on the Z axis is provided to move by the pinion and the rack rotated by another drive motor.

In addition, the mounting parts supplied from one side of the surface mounter are classified into semiconductor devices supplied by a tape feeder and semiconductor devices supplied by a tray feeder. The semiconductor devices supplied are pitched to maintain their distances. Is fixed.

That is, in the case of a tape feeder, all the space | intervals installed are constant pitch. Therefore, each nozzle is made to suck the mounting parts by hand at once.

Therefore, the nozzles provided in the above-described conventional mounter heads are provided so as to correspond to the pitch of the semiconductor device supplied by the tape feeder and the tray feeder.

However, in the case of the tray feeder, even though the outer size is determined, the sizes of the mounting devices inserted in the inside are different in size, so that many small devices are inserted into the tray and thus have a narrow distance pitch. Since they have a wide distance pitch, it is difficult to adsorb the mounting parts supplied by the tray feeder with a nozzle installed to have a constant pitch as in the prior art.

Therefore, since nozzles installed in a conventional mounter head are installed to have a pitch of a certain distance, a lot of productivity is required when supplying a device having various pitches, such as a tray feeder, even if suitable for supplying a device having a constant pitch such as a tape feeder. This deterioration problem occurred.

The present invention has been made to solve such a problem in the prior art, the surface is variable pitched so that the device is not only supplied to the device device by a tape feeder having a constant pitch, but also supply the device to a tray feeder having a variety of pitch changes It is an object to provide a head of a mounter of a mounting machine.

1 is a perspective view showing the structure of the mounter head of the surface mounter of the present invention,

2 is a side view showing the structure of the mounter head of the surface mounter of the present invention.

Explanation of symbols on the main parts of the drawings

10: X axis frame 12: fixed block

14: moving block 16: plate

18: support plate 20,56: drive motor

22: bracket 24, 26: pulley

28: ball screw 30: ball screw nut

32,34: LM block

36: moving plate 38: LM guide

40: first nozzle 41: first nozzle shaft

42: second nozzle 43: second nozzle shaft

44: third nozzle 45: third nozzle shaft

46: fourth nozzle 47: fourth nozzle shaft

48: pinion 50: rack

52: printed circuit board 54: rack block

100: positioning camera 102: first nozzle assay

104: Second Nozzle Assay 106: Third Nozzle Assay

108: fourth nozzle assay

The present invention provides a mounter head for absorbing various chips and mounting them on a printed circuit board, the mount head comprising: a plate installed to move left and right along an X axis frame; A driving motor installed at all upper ends of the plate and having a pulley at one end thereof; A ball screw nut spaced apart by a predetermined distance in a downward direction of the drive motor; A ball screw having a pulley at one end thereof and coupled to the ball screw nut and installed to linearly move from side to side; A moving plate installed at a right side of the plate to move left and right along the X axis frame; A ball screw nut fixed to all upper ends of the moving plate so that the other end of the ball screw is inserted; A first nozzle assay and a second nozzle assay installed at a lower end of the ball screw nut installed on the plate; And a third nozzle assay and a fourth nozzle assay installed at a lower portion of the ball screw nut installed on the moving plate.

The third nozzle and fourth nozzle assays are fixed to the moving plate, and as the driving motor rotates, a ball screw connected by a belt rotates to move the moving plate, thereby moving the first nozzle assay and the second nozzle assay. It is characterized in that it is installed so that the pitch with the nozzle assay is variable.

(Example)

Hereinafter, the mounter head of the surface mounter of the present invention with reference to the accompanying drawings.

The present invention relates to a mounter head (100) for absorbing various chips and mounting them on a printed circuit board, comprising: a plate (16) installed to be movable left and right along an X-axis frame (10); A driving motor 20 installed at the upper end of the plate 16 and having a pulley 24 at one end thereof; A ball screw nut 31 installed to be spaced apart by a predetermined distance in a downward direction of the drive motor 20; A ball screw 28 having a pulley 26 at one end thereof and coupled to the ball screw nut 31 so as to linearly move from side to side; A moving plate 36 installed at a right side of the plate 16 to move left and right along the X-axis frame 10; A ball screw nut 30 fixed to all upper ends of the moving plate 36 so that the other end of the ball screw 28 is inserted therein; A first nozzle assay (102) and a second nozzle assay (104) installed at a lower end of the ball screw nut (31) provided on the plate (16); And a third nozzle assay 106 and a fourth nozzle assay 108 provided below the ball screw nut 30 provided on the moving plate 36.

The third nozzle assay 106 and the fourth nozzle assay 108 are fixed to the moving plate 36 and are connected to the ball screw 28 by the belt 60 as the driving motor 20 rotates. Rotate to move the moving plate 36 so that the pitch of the first nozzle assay 102 and the second nozzle assay 104 is variable.

1 is a perspective view showing the structure of the mounter head of the surface mounter of the present invention, Figure 2 is a side view showing the structure of the mounter head of the surface mounter of the present invention.

First, referring to Figures 1 and 2, the fixed block 12 is installed horizontally long, the moving block 14 is installed so as to move left and right along the fixed block 12, The plate 16 is provided in parallel with all the blocks 14,

The support plate 18 is installed on the front left side of the plate 16, and a positioning camera 58 for indicating the position of the component mounted on the printed circuit board 52 is provided on the entire support plate 18. It is installed.

In addition, a bracket 22 is fixed to the upper right front of the plate 16, and a driving motor 20 having a belt pulley 24 at the left end thereof is provided in the bracket 22 in a lateral direction. In addition, a ball screw nut 31 is provided at a lower portion thereof, and a ball screw 28 having a belt pulley 26 is coupled to the ball screw nut 31 at a left end thereof so as to be movable left and right. .

At this time, the moving plate 36 is vertically installed on the right side of the plate 16, and a ball screw nut 30 fitted to the right side of the ball screw 28 is attached to the moving plate 36. It is fixed.

Since the LM blocks 32 and 34 are provided at the rear of the plate 16 and the moving plate 36 installed as described above, and the LM blocks 32 and 34 are coupled to the X-axis frame 10. It is installed to allow sliding from side to side.

Meanwhile, the pulley 24 provided in the drive motor 20 installed on the plate 16 and the pulley 26 provided in the ball screw 28 are connected by a belt 60 so that the drive motor 20 is connected. As the ball screw 28 connected to the belt 60 rotates, the moving plate 36 moves left and right.

The first nozzle assay 102 and the second nozzle assay 104 are installed at the lower right side of the plate 16, and the first nozzle assay 102 and the second nozzle assay 104 are provided. A pair of rack blocks 54 each having a rack formed on each side are shifted in different positions, and the rack on one side is installed to engage the pinion 48 to the driving source (not shown) of the pinion 48. As the pinion 48 rotates, a rack block 54 having a rack engaged with the pinion 48 moves upward and downward. At this time, the rack block 54 has a first nozzle 40 at a lower end thereof. ) And the first nozzle shaft 41 and the second nozzle shaft 43 each having the second nozzle 42 are disposed, and the first nozzle shaft 41 and the second nozzle shaft 43 are stopped. Drive motors 62 are respectively installed at the time of rotating the first nozzle shaft 41 and the second nozzle shaft 43. As a result, the first nozzle 40 and the second nozzle 42 provided at the end thereof are rotated.

In addition, the moving plate 36 includes a third nozzle assay 106 and a fourth nozzle assay so as to correspond to the first nozzle assay 102 and the second nozzle assay 104 installed on the plate 16. 108 is provided to maintain the same height.

The third nozzle assay 106 and the fourth nozzle assay 108 will be described in more detail. A pair of rack blocks 54 having a rack formed on one side of the moving plate 36 may be described. The pinion 48 is installed so as to be movable up and down, and the pinion 48 is installed to engage with the rack formed on one side thereof, and the pinion 48 is linearly moved while simultaneously rotating with the driving source not shown. The rack block 54 is moved up and down.

In addition, the rack block 54 is provided with a third nozzle shaft 45 and a fourth nozzle shaft 47 provided with a third nozzle 44 and a fourth nozzle 46 at a lower end thereof, respectively. A driving motor 56 corresponding to each of the third nozzle shaft 45 and the fourth nozzle shaft 47 is provided at each stop, and the driving motor 56 is connected to the third nozzle shaft 45 and the third nozzle shaft 45. By rotating the 4 nozzle shaft 47, the 3rd nozzle 44 and the 4th nozzle 46 which were equipped in the lower end are provided so that it may rotate to an R axis | shaft.

As described above, the mounter head of the present invention described with reference to FIGS. 1 and 2 includes a first nozzle 40, a second nozzle 42, a third nozzle 44, which absorbs a component mounted on the printed circuit board 52, and The first nozzle shaft 41, the second nozzle shaft 43, the third nozzle shaft 45, and the fourth nozzle shaft 47 having the fourth nozzle 46 at each lower end thereof include the rack block 54. And nozzle nozzles 41, 43, 45, 47 installed on the first nozzle shaft 41, the second nozzle shaft 43, the third nozzle shaft 45 and the fourth nozzle shaft 47, respectively. Drive motor 56 is installed to rotate the nozzle shafts 41, 43, 45, and 47 to rotate the respective nozzles 40, 42, 44, and 46 provided at the lower end about the R axis. Let's go.

As described above, the configuration of the first nozzle assay 102, the second nozzle assay 104, the third nozzle assay 106, and the fourth nozzle assay 108 may include the respective nozzles 40, 42, and 44. And 46 can be mounted and adsorbed to the mounting parts supplied from the tape feeder appropriately for each pitch, and the mounting parts can be mounted with the same pitch even when mounted on the printed circuit board 52.

In addition, in the case of the mounting parts supplied by the tray feeder in addition to the mounting parts supplied by the tape feeder, the pulleys 24 driven by the driving motor 20 and connected to the belt 60 are not provided. , 26).

At this time, the ball screw 28 connected to the pulley 26 is rotated, the ball screw nut 30 is fastened to the right end of the ball screw 28 is fixed to the moving plate 36, so the ball screw The pitch of the first and second nozzle assays 102 and 104 and the third and fourth nozzle assays 106 and 108 are linearly moved along the X-axis frame 10 and gradually pushed out by 28. This is done.

Although the above operation is described in the case where the pitch of the mounting device supplied by the tray feeder is large, the third nozzle assay 106 and the fourth nozzle assembly are rotated by forward and reverse rotation of the drive motor 20. The moving plate 36 provided with the saw 108 is moved left and right to easily adjust and use a device having a small pitch.

As described above, even when the pitches supplied by the tray feeders are different from each other, the device can easily handle the devices simultaneously, thereby shortening the TACT TIME.

In addition, the narrow pitch spacing is adjusted so as to adsorb, it is possible to put a lot of mounting parts when supplying the device.

The mounter head of the surface mounter of the present invention as described above can be quickly mounted by varying the pitch of each nozzle by simultaneously varying the pitch of each nozzle even when the pitch of the mounting component supplied when mounting the printed circuit board of the electronic component is different. (TACT TIME) is shortened to improve the productivity of the product.

Claims (2)

In the mounter head for absorbing various chips and mounting them on a printed circuit board, A plate installed to move left and right along the X-axis frame; A driving motor installed at all upper ends of the plate and having a pulley at one end thereof; A ball screw nut spaced apart by a predetermined distance in a downward direction of the drive motor; A ball screw having a pulley at one end thereof and coupled to the ball screw nut and installed to linearly move from side to side; A moving plate installed at a right side of the plate to move left and right along the X axis frame; A ball screw nut fixed to all upper ends of the moving plate so that the other end of the ball screw is inserted; A first nozzle assay and a second nozzle assay installed at a lower end of the ball screw nut installed on the plate; The mounter head of the surface mounter, comprising a third nozzle assay and a fourth nozzle assay installed at a lower portion of the ball screw nut installed on the moving plate. The method of claim 1, wherein the third nozzle and fourth nozzle assays are fixed to the moving plate such that a ball screw connected by a belt rotates as the driving motor rotates to move the moving plate. The mounter head of the surface mounter, characterized in that the pitch is mounted so that the pitch of the nozzle assay and the second nozzle assay is variable.