KR100316617B1 - dressing method of scrubbing machine for PCB - Google Patents

Abstract

PURPOSE: A method for dressing a PCB brush machine is provided to dress abrasion of a brush roll in a fast and efficient manner and at the same time realize a simple structure. CONSTITUTION: A conveyer mechanism(12) conveys a substrate for manufacturing PCB in a longitudinal direction of a body(1). A plurality of brush rolls(13) are arranged at predetermined intervals on a path of the conveyer mechanism(12) and functions to polish the substrate. Back-up rolls(15) are distanced from the brush rolls(13) by a predetermined interval in a vertical direction. Driving mechanisms(16,17,18) rotate the brush rolls(13). A dressing method is performed for the purpose of making smooth an outer peripheral surface of the brush rolls(13) which is abraded due to use in a brush machine for PCB. A polishing plate on which a hard concave-convex surface is formed passes between the brush rolls(13) and the back-up rolls(15), thereby polishing the outer peripheral surface of the brush rolls(13).

Description

Dressing method of scrubbing machine for PCB

The present invention relates to a dressing method of a printed circuit board front face device, and more particularly, to a dressing method of a new printed circuit board front face device capable of performing polishing operation efficiently.

In the manufacturing process of a printed circuit board (PCB), the surface of the substrate should be polished with a brush roll before and after forming the circuit on the substrate to make the surface flat. To this end, conventionally, as shown in Figure 1, using a front face, as shown, the upper and lower surfaces of the substrate 10 is polished while the circuit board 10 is passed between the plurality of brush rolls 13 are arranged up and down to form a predetermined interval. do. In this case, the brush roll used is, for example, impregnated with a non-woven fabric, and when used for a considerable time, the center portion of the outer circumference of the roll wears and dents, and both ends of the wear roll is not worn. Due to such abrasion, the abrasion is also generated in the substrate itself, and thus the precision of processing is significantly lowered.

Therefore, a dressing treatment for periodically grinding the unweared brush roll should be performed. As such a dressing mechanism, as shown in FIG. 1, a bite 2 disposed adjacent to an outer circumferential surface of each roll 13 may be formed. By rotating the brush roll 13 while gradually moving along the longitudinal direction, the brush roll was polished in the same manner as a kind of turning to remove uneven wear. However, the conventional dressing mechanism has to have a separate bite 2 for each brush roll 13 and a peripheral device for driving the same, which complicates the device and takes a long time to polish the brush roll 13. There is a problem that the front work process of the printed circuit board is frequently and long time interrupted.

The present invention has been proposed in view of the problems of the conventional method of dressing the front side of a printed circuit board as described above, and has a simple structure and can be quickly and efficiently dressing the uneven wear of the brush roll. To provide a method of dressing.

1 is a schematic diagram of a dressing mechanism of a conventional printed circuit board front face

2 is a schematic configuration diagram of a dressing mechanism of a printed circuit board front face device according to the present invention;

3 and 4 are schematic longitudinal cross-sectional and cross-sectional views of an embodiment of the invention.

5 is a configuration diagram of an abrasive plate used in the present invention

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

1. Body 2. Bytes

3. Drive motor 4. Bearing block

6. Worm gear mechanism 7. Drive shaft

8. Lead screw 10. Substrate

12. Conveyor Mechanism 13. Brush Roll

15. Backup rolls 16 to 17. Drive mechanism

20. Polishing plate

According to the present invention, a conveyor mechanism 12 for transferring the PCB manufacturing substrate 10 along the longitudinal direction of the main body 1, and a substrate disposed at a predetermined interval on the conveying path of the conveyor mechanism 12 and transported ( 10, a brush roll 13 provided to polish the back, a backup roll 15 spaced apart from the brush roll 13 by a predetermined interval in the vertical direction, and a driving mechanism 16 and 17 for rotating the brush roll 13. In the dressing method for smoothly polishing the outer circumferential surface of the brushed roll 13, which is worn by use in a front face for a printed circuit board, comprising: a hard surface on the surface between the brush roll 13 and the backup roll (15); Provided is a dressing method for a printed circuit board front face machine, wherein the outer circumferential surface of the brush roll 13 is polished by passing the abrasive plate 20 having the uneven surface 22 formed thereon.

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention. 2 to 4 are views showing the configuration of the present invention, Figure 5 is a block diagram of an abrasive plate used in the present invention. As shown, according to the present invention, a conveyor mechanism 12 composed of a plurality of conveying rolls is formed along the longitudinal direction of the upper surface of the main body 1, and in the middle of the conveyor mechanism 12 is a brush roll 13 and a backup. The roll 15 is vertically arrange | positioned adjacently and several pieces are installed. As shown in FIG. 4, the brush roll 13 is configured to be rotated by the drive motor 16, the belt 17, and the pulley 18. The brush roll 13 is impregnated with a nonwoven fabric, and performs a function of smoothly polishing the surface of the circuit board. On the other hand, as a structure for elevating and driving the brush roll 13, a rotary encoder is attached. The drive motor 3, the pulley 9, the drive shaft 7 and the worm gear mechanisms 5 and 6 condensed at both ends of the drive shaft 7 are included. The worm gear mechanism (5,6) is composed of a worm gear (5) coupled to both ends of the drive shaft (7), and a worm wheel (6) coupled to the worm gear (5). The worm wheel 6 is coupled with a lead screw 8 installed vertically. The lead screw 8 is screwed with a bearing block 4 for rotatably supporting the rotating shaft 14 of the brush roll 13. Therefore, when the operator inputs a predetermined dimension to the controller (not shown) according to the thickness of the printed circuit board 10 to be inserted, the drive shaft 7 is rotated by the rotational force of the drive motor 3, and coupled to the drive shaft 7 The lead screw 8 is rotated by the worm gear mechanisms 5 and 6, and the bearing block 4 coupled to the lead screw 8 is raised and lowered so as to be rotatable to the bearing block 4. The height of the supported brush roll 13 can be adjusted. At this time, the worm gear mechanisms 5 and 6 may rotate the worm wheel 6 by driving the worm gear 5, but there is an interlocking function in which the worm gear 5 is not rotated by the rotational force of the worm wheel 6. . Therefore, unless the driving motor 3 is driven, the lead screw 8 coupled to the worm wheel 6 does not rotate, so that the weight of the brush roll 13 does not require a separate brake mechanism. The lead screw 8 is rotated to prevent the brush roll 13 from lowering itself.

On the other hand, the apparatus according to the present invention does not include the bite 2 for dressing the unweared brush roll 13 and its driving mechanism unlike the conventional one. Instead, in the present invention, the abrasive plate 20 as shown in FIG. 5 passes between the brush rolls 13. The upper and lower surfaces of the abrasive plate 20 are composed of a hard uneven surface 24 having a diamond tip 25 sintered thereon, and when the abrasive plate 20 is passed between the brush rolls 13, the brushed abrasive wear roll ( 13) is uniformly polished to make the outer circumferential surface flat. Therefore, as in the prior art, since the bite mechanism does not need to be provided for each individual brush roll, the device can be drastically simplified and the dressing process can be performed as broadly as the width of the abrasive plate at once, thus saving the time required for dressing. Therefore, the manufacturing cost of the device can be reduced, and an excellent effect of improving the operation efficiency can be obtained.

Therefore, as in the prior art, since the bite mechanism does not need to be provided for each individual brush roll, the device can be drastically simplified and the dressing process can be performed as broadly as the width of the abrasive plate at once, thus saving the time required for dressing. Therefore, the manufacturing cost of the device can be reduced, and an excellent effect of improving the operation efficiency can be obtained.

Claims (1)

The conveyor mechanism 12 for transferring the PCB manufacturing substrate 10 along the longitudinal direction of the main body 1 and the substrate 10 being disposed at predetermined intervals on the conveying path of the conveyor mechanism 12 are polished. A brush roll 13 provided, a backup roll 15 spaced apart from the brush roll 13 by a predetermined interval in a vertical direction, and drive mechanisms 16, 17, and 18 for rotating the brush roll 13; In the dressing method for smoothly polishing the outer circumferential surface of the brushed roll 13, which is worn by use in a front face for a printed circuit board, between the brush roll 13 and the back-up roll 15 on the surface of the hard uneven surface 22 The outer peripheral surface of the brush roll (13) is polished by passing the formed abrasive plate (20).