KR20040061520A - Structure for Controlling Height of PCB Conveyer for Surface Mounter - Google Patents

Abstract

PURPOSE: A height adjusting apparatus is provided to easily remove the height difference between a surface mounting device and a PCB conveyor by permitting the height of end of PCB conveyor to be easily adjusted. CONSTITUTION: A height adjusting apparatus comprises a plurality of height adjusting blocks(210) arranged at both inner ends of a frame(111) in such a manner that the height adjusting blocks are movable in a vertical direction, wherein the height adjusting blocks fix pulleys(126) disposed at both ends of the frame in such a manner that the pulleys are rotatable; and a fixing unit for fixing the height adjusting blocks at the state where the height adjusting blocks are movable in a vertical direction. The fixing unit includes a plurality of through holes(211) formed at the height adjusting block; a coupling hole formed at the end of the frame; and a bolt(215) and a nut penetrating through the through holes and the coupling hole.

Description

Structure for Controlling Height of PCB Conveyer for Surface Mounter

The present invention relates to an apparatus for adjusting the height of a device for transporting a substrate in a surface mounter, and in particular, to facilitate the adjustment of the height of the end portion of the substrate transporter, so that the substrate is another surface chamber in the surface mounter nearby. The present invention relates to a height adjusting device for a substrate mounting apparatus for a surface mounter, which can easily prevent a phenomenon that is caught when transferred to a long-term substrate transfer apparatus.

In general, a surface mounter is a device that receives mounting components such as semiconductor elements from a component supplyer, transfers them to a mounting position of a printed circuit board (PCB), and then automatically mounts them at a predetermined position on the printed circuit board. A feeder unit for supplying a mounting component wound in a wound state, an XY gantry unit for determining a working position, a transfer device for transporting a printed circuit board to be worked on, and a printed circuit for picking up the mounting component from the feeder unit It consists of the head part etc. which are mounted on a board | substrate.

Such surface mounters are typically arranged inline on the assembly line, whereby printed circuit boards are continuously moved through the transfer device of each surface mounter, whereby different types of mounting components are applied to each surface mounter. It is supposed to go through the process of being mounted in place.

However, during the mounting of the mounting parts by arranging the surface mounters in-line as described above, the transfer device 1 of the surface mounter for transferring the printed circuit board B as shown in FIG. If the height of the transfer device 2 of the other surface mounter receiving the printed circuit board is higher than the height, the printed circuit board B is caught on the end of the transfer device 2 when it is transferred to the other surface mounter. The phenomenon of not proceeding occurs, and in this case, the work of the surface mounters of the entire assembly line is stopped, which causes a problem of lowering productivity.

Therefore, conventionally, before starting the mounting work, the operator checks the height difference between the transfer devices of all the surface mounters arranged inline, and if there is a height difference between the transfer devices, corrects the height difference in the lower part of the surface mounter. The height difference between the conveying devices is eliminated by adding a correction material.

However, in order to add the correction for correcting the height difference as described above, a number of workers need to carry out the work of adjusting the height of the conveying device by lifting or moving the heavy surface mounter directly, thus eliminating the height difference. It was difficult and laborious and took a long time to reduce productivity.

Accordingly, the present invention has been made to solve the above problems, the height of each end of the transfer device of the surface mount machine can be easily adjusted by the height of the transfer device of the other surface mounter arranged inline Provided is a height adjusting device for a printed circuit board transfer device for a surface mounter so that a car can be easily removed.

1 is a view illustrating a problem occurring in a conventional printed circuit board transfer apparatus for a surface mounter.

Figure 2 is a perspective view showing the structure of a printed circuit board transfer apparatus to which the first embodiment of the height adjustment apparatus according to the present invention is applied

3 is a partial perspective view showing a part of the printed circuit board transfer device of FIG. 2 in detail to show the height adjustment device of FIG.

4 is a front view of the component of FIG. 3;

5 is a side view of the component of FIG. 3;

6A and 6B are principal part longitudinal sectional views showing the height adjustment state by the height adjustment apparatus of this invention, respectively.

Figure 7 is a perspective view showing another embodiment of the height adjustment device of the printed circuit board transfer apparatus according to the present invention

Explanation of symbols on the main parts of the drawings

111: frame 121-126: pulley

131 ~ 135: tension applied pulley 141 ~ 143: driving pulley

151 ~ 156: Servo Motor 161 ~ 163: Transfer Belt

210: height adjustment block 211: through hole

212: fastener 215: bolt

216 Nut

In order to achieve the above object, the present invention, a pair of frames installed in parallel to the surface mounter main body, a plurality of pulleys rotatably installed on the inner surface of each of the frame, so as to span the respective pulleys In the printed circuit board transfer device comprising a plurality of transfer belts are installed and transported on which the printed circuit board is mounted, and a drive means for moving the respective transfer belts in one direction, the upper and lower ends of the inner frame of each frame; A plurality of height adjusting blocks which are installed to be changeable in position and in which pulleys disposed at both ends of each frame of the pulleys are rotatably fixed; It provides a height adjusting device of the surface mounting device printed circuit board transfer apparatus comprising a fixing means for fixing the height adjusting block in a state in which the vertical position of the height adjusting block is variable.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the height adjusting device of the surface mount device for a printed circuit board transfer apparatus according to the present invention will be described in detail.

2 is a view illustrating a configuration of a printed circuit board transfer apparatus for a surface mounter to which a height adjusting device is applied according to the present invention, in which a pair of frames 111 are parallel to each other in a left and right direction on a main body (not shown) of the surface mounter. On the inner side of each frame 111, a plurality of pulleys 121 to 126 (six in this embodiment) are provided to be paired at a predetermined interval to form a pair, and each pulley (121, 122; 123, 124; 125, 126) The transfer belts 161 to 163 are coupled to the pair, and three transfer belts 161 to 163 are arranged in a row in each frame 111 to continuously move the printed circuit board B.

Each of the conveyance belts 161 to 163 is brought into close contact with the driving pulleys 141 to 143 which are rotated by the servo motors 151 to 156 provided outside the frame 111 and is moved by the rotation of the driving pulleys. In the vicinity of each of the driving pulleys (141 to 143), tension applying pulleys (131 to 135) for applying a predetermined tension to the conveying belts (161 to 163) are installed and the driving pulleys (141 to 143). By increasing the adhesion between the conveying belts (161 ~ 163), the conveying belt (161 ~ 163) during the rotation of the drive pulleys (141 ~ 143) is to be able to move smoothly.

Unexplained reference numerals 171 and 172 are support bars that support the transfer belt 163 so as not to be struck downward when the printed circuit board B is placed on the transfer belt 163.

Meanwhile, as shown in FIGS. 3 to 5, grooves 112 having a predetermined size are formed at both ends of each frame 111, and the grooves 112 are formed at both ends of the pulleys 121 to 126. A height adjusting block 210 is installed to which the pulleys 121 and 126 are rotatably coupled, wherein the height adjusting block 210 is formed at both ends of the frame 111 as a separate element from the frame 111. It is installed to be able to change the position up and down in the groove 112, that is, to adjust the height.

Further, a lower long through-hole 211 is formed in the lower portion of the height adjustment block 210 in the vertical direction, and a circular fastening hole at a position corresponding to the through hole 211 at the end of the frame 111. 212 is formed, the bolt 215 is inserted through the through hole 211 and the fastening hole 212 is configured to be fastened by the nut 216 outside the frame 111.

Therefore, the height adjustment block 210 is positioned at a predetermined height in the groove 112, and then the bolt 215 is inserted through the through hole 211 and the fastening hole 212 from the inside of the frame 111. When the nut 216 is fastened, the height adjusting block 210 is fixed to the frame 111 at the position.

Height adjustment by the height adjustment device of the printed circuit board transfer device configured as described above is made as follows.

After arranging several surface mounters inline, the operator checks whether the heights of the transfer belts 161 and 163 of the surface mounters coincide with each other before the component mounting work. By adjusting the height of the adjusting block 210, the heights of the conveyance belts 161 and 163 at the end of the frame 111 are adjusted.

For example, in order to increase the height of the height adjustment block 210 in a state in which the bolt 215 is coupled to the top of the through hole 211 of the height adjustment block 210 and coupled as shown in FIG. Loosen the bolt 215 and the nut 216 to release the height adjustment block 210, and then, as shown in Figure 6b, the lower end of the through hole 211 and the fastening hole 212 in the state aligned The bolt 215 may be inserted into the through hole 211 and the fastening hole 212, and then firmly fixed with the nut 216.

If the height difference between the conveying belts 163 is not large, and the height adjustment block 210 is to be slightly increased, the middle portion of the through hole 211 is aligned with the fastening hole 212, and the bolt 215 and the nut ( 216 may be used to secure the height adjustment block 210 at that position.

Of course, when the position of the height adjusting block 210 is to be lowered, the position of the height adjusting block 210 may be adjusted in the same manner as described above.

In addition, when performing the operation of adjusting the height of the height adjustment block 210 as described above, the height adjustment block 210 of both the frames 111 of the printed circuit board transfer device must be adjusted to the same height of the printed circuit board. This can be conveyed smoothly without tilting.

On the other hand, Figure 7 shows another embodiment of the height adjustment device of the printed circuit board transfer apparatus according to the present invention, in this embodiment a plurality of through holes in the circular adjustment instead of the long hole-type through holes in the height adjustment block 310 311 is arranged in a line in the vertical direction, and height adjustment is performed by fixing the through hole 311 at a desired position with the bolt 315 and the nut 216 in a state aligned with the fastening hole 312.

That is, when the height adjusting block 310 is adjusted to the lowest position to lower the height of the end of the conveying belt 163 to the lowest, the uppermost through hole 311 and the fastening hole 312 of the height adjusting block 310 are closed. The bolt 315 and the nut 316 may be fastened in an aligned state, and when the height of the end of the conveying belt 163 is to be adjusted to the uppermost position, it is fastened to the bottom through hole 211 of the height adjustment block 210. The balls 212 can be aligned and fixed.

According to the present invention as described above, by adjusting and fixing the height of the height adjustment block to the desired height it is possible to adjust the height of the end of the conveying belt of the conveying device to match the height of the conveying belt of the surface mounter on the other side, Since the operator can easily adjust the height between the transfer devices without having to perform a difficult operation such as moving the surface mounter directly, workability can be improved and work time can be shortened to improve productivity.

Claims (4)

A pair of frames installed in parallel to the surface mounter main body, a plurality of pulleys rotatably installed on the inner surface of each frame, and a plurality of pulleys installed to span each of the pulleys, the printed circuit board is mounted thereon and transported thereon. In the printed circuit board transfer apparatus including two transfer belts, and drive means for moving the respective transfer belts in one direction, A plurality of height adjusting blocks installed at both ends of the inner surface of each of the frames so that the position thereof can be changed vertically, and a pulley disposed at both ends of each of the pulleys is rotatably fixed; And a fixing means for fixing the height adjusting block in a state in which the vertical height of each height adjusting block is varied. The method of claim 1, wherein the fixing means is a plurality of through holes formed in the elongated long hole in the height adjustment block, a fastening hole formed at a position corresponding to the through hole at the end of the frame, the through hole and Height adjustment device for a printed circuit board transfer device for a surface mounter comprising a fastening means that is coupled to pass through the fastening hole. According to claim 1, The fixing means, A plurality of circular through holes arranged in a line in the vertical direction in the height adjustment block, Fastening holes formed in the position corresponding to the through holes at the end of the frame, Each Height adjusting device for a printed circuit board transfer device for a surface mounter, characterized in that the fastening hole is coupled to the through-hole and the fastening hole coupled to any one of the through-hole and aligned. [4] The height adjusting device of claim 2, wherein the fastening means comprises a bolt and a nut.