JPS6080556A - Both-side polishing machine of plate-shaped material - Google Patents

Abstract

PURPOSE:To polish a material in uniform quality despite its thickness and wearing of a brush, by providing an automatic lifting means, which vertically moves the rotary brushes for use of upper and bottom sides of the material simultaneously or separately, and a manual lifting means which adjusts an axial core of the brush in accordance with a change of diameter when the brush is worn. CONSTITUTION:A plate-shaped material 10 is horizontally transferred to be fed by plurality of rollers 104, and if its thickness measured by a plate thickness sensor 164 is beyond the predetermined range, a signal of once stopping a feed is generated to stop a motor 182, and after a plate-shaped material 10 in thickness within the range transferred to be fed in the preceding time passes through a polishing machine 200, a measured value signal of plate thickness is fed to a servo motor 220 so as to adjust a position of rotary brushes 204, 208 for use of upper and bottom sides, starting again the motor 182 and transferring the plate-shaped material 10 to be fed. While a signal in accordance with wearing of the brushes 204, 208 is calculated with the signal of thickness of the plate-shaped material 10, performing the predetermined adjustment. In such way, the material can be polished by a fixed thickness by adjusting a position of the brushes in accordance with the thickness of the plate-shaped material 10 and the wearing of the brushes 204, 208.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a double-sided polishing machine for plate-shaped objects. Ru.

Prior Art A polishing machine that polishes both sides of a plate-shaped object such as a printed circuit board, a laminate, a synthetic resin veneer, or a ceramic plate. Each type uses a rotating roll-shaped polishing brush for polishing.

However, in conventional double-sided polishing machines, the position of the rotating brush must be adjusted to the yJ section each time the thickness of the plate-shaped object to be polished differs, and this "+i!", 4th section requires the hands of an experienced person. However, it was extremely difficult to polish the plate-like material to a certain depth, which was ψ12, and the quality of the product was low.

In addition, the depth at which the plate-shaped object is polished changes due to wear and tear caused by the polishing of the rotating brush, making it difficult to polish to a certain thickness. It required

Furthermore, since a plate-like object made of a material that is extremely thick and has a rough surface will be polished as it is, when polishing a plate-like object that is extremely thick.

When polishing a plate-shaped object, the grinding edge of the plate-shaped object is too large and the thickness is extremely complicated. was there. Shil・,Qzttl”;;ar;7%g book 171-B;
<4), q7g93゜The present invention solves the above-mentioned conventional drawbacks and automatically grinds a plate-shaped body to a predetermined thickness, regardless of the difference in thickness of the rod-shaped body to be polished. The purpose is to provide a double-sided training plan that can be obtained in a timely manner.

Further, the present invention automatically limits the amount of wear of the rotating brush due to polishing to 5 sections, thereby making it possible to polish a plate-like object to a constant J corner.

Furthermore, the present invention temporarily suspends ICi& feeding and grinding when a defective material with an extremely low thickness is introduced, thereby preventing the defective material from being removed and the rotating brush being abnormally erased. 0 DISCLOSURE OF THE INVENTION The present invention provides a method for polishing both upper and lower surfaces of a plate-shaped body with a brush while transporting the plate-shaped body substantially horizontally. Turn the upper surface to polish the surface by the selected finish setting thickness; -1 brush and rotating brush for the lower figure on 1b11 or separately on the upper This is a double-sided polishing machine for a plate-shaped body, which is equipped with a hand=b-F+lowering means for adjusting the reference position of the rotation axis according to changes in the diameter due to wear and other factors of the rotary brush.

An embodiment of the present invention is shown in FIGS. 1 and 2. 100Fi thickness: i! 1, and the filling is determined while the plate-shaped object is being transferred.

Reference numeral 200 is a double-sided polishing machine, which sequentially polishes the surface by 4tJr while transporting the plate whose thickness has been measured by 4tJr.

First, the thickness measuring device 100 will be explained. At the top of the frame 102 is a roller 1 with a raft value.
04 are arranged in parallel. The rollers 104 are rotatable in the directions of the arrows, and are rotated by a conductor 106.

At the top of the roller 104 there is an entry detection mechanism 120, horizontal transfer mode +r:;t 40 and measurement 4
mm t 60 is fixedly disposed on the frame 102.

The detection cherry tree 120 is a photosensor 122. The horizontal transfer comb 140 moves the pinch roller 142 and the skeleton pinch roller 142 up and down. Kiseru actuator 1
Consists of 44.

Measurement carefully 1.7160 is the detection j crawler 162, the plate horse (sensor 164
and a photosensor 166.

Inside the frame 102 are Waki Isuke 4), 2 Oi'S 1
80 and control'; a circuit (not shown) is provided.

The private Maki'Jk 18 Q is connected to the right end of the reed 182 and the roller 104 by a conductor 108.

Then, by rotating Chiyo 182, the rightmost roller 104 is rotated by the conductor 108, and the conductor 1
06 causes the other roller 104 to rotate.

By one rotation of the plurality of rollers 104, the plate-shaped body 10 whose thickness is to be measured is horizontally transferred in the direction of the arrow.

When the plate-like object 10 comes to the lower part of the photosensor 122, the photosensor 122 detects the plate-like object 10, sends a signal to the actuator 144 indicating the removal of the woodcutter 7c, and the actuator 144 lowers the pinch roller.
The pinch roller 142 is once raised and then lowered for a predetermined period of time.
Hold and transport 10 plate-like objects.

Then, the plate-shaped body lO is milled by the pinch roller 142. When the plate-shaped body 10 is transferred to the lower part of the roller 162, the @tracing 10-roller 162 is driven, and the plate-like body 10 is held between it and the roller 104, and the inspection roller 1
A plate thickness sensor 164 in contact with 62vc measures the thickness of the plate-shaped body IO. Photo sensor 166! When the ll& shaped body 101 is detected, the signal of the plate thickness υ111 of the ICj of the sensor 164 is sent to the senji I; It will be done.

11) If the position of the fixed root-like body 10 is outside the range B or N, the transfer of the nano-like body 10 is temporarily suspended to prevent the generation of defective products and to protect the polishing machine frame. A signal to stop the bamboo is emitted from the & thickness sensor 164, the motor 182 is stopped, the rolling of the roller 104 is stopped, and the plate-shaped body 10 is stopped.
;'I" iJF Ni!' + 裟20 OK MOVE?J
Avoid f = G, then j,! Migaj9'+'
A: It was transferred in front of the plate-shaped body 10 outside the bulge of l, but 1
Assuming that the plate-like bodies 10 within the specified range have passed through the polishing machine II]l and the polishing has been completed, the rotary brush of the polishing machine is rotated according to the thickness of the root-like bodies 10 that are outside the range. After one cycle is completed, the motor 182 is rotated to feed the plate-shaped body 100.

Next, R〉c will be explained about double-sided σ and 4 mena 200.

202 is the lower belt p1 approximately horizontally in the direction of the arrow V'c,
Moving. Reference numeral 204 denotes a rotating brush for the upper surface, which is dazzled by a number (1/+1) even when it comes close to the upper surface of the lower belt 202.

206 is an upper belt, which is water resistant and moves in the direction of the arrow VC. Reference numeral 208 denotes rotating brush rolls for the lower surface, and several of them are provided close to the lower surface 11C1λ of the upper belt 206.

Such a single pile 1 (υ1) (3, In the bolt 200, the plate-shaped body 10 such as a printed circuit board is the F part bell) 202
＆'C direction of arrow &'c Transfer, Vinci Roll 21
0&C,l:,? The upper part of the rotary brush 2040 rotates once it has been set in place, and then the upper belt 206 VC transfers it in the same direction by rc, and the lower part rotary brush 208 Vc transfers the upper belt to the upper belt 208 Vc. 1 is sharpened by 9.

Reference numeral 212 denotes a polishing agent injection pipe, and the polishing agent is injected from a polishing agent tq injection port 213 onto the rotating upper surface rotating brush 204 and the plate-shaped body 10 .

Reference numeral 214 is an abrasive reservoir, in which the abrasive is stored. The lower rotating brush 208 is (b) rotated and sequentially dipped into the abrasive agent in the abrasive agent 14'i''t', I.

216.218Vi pinch roller, plate-shaped body 10
It is used to transport.

In such a piece 1I11ken rr7+;ri200,
The rotating brush 204 for the upper surface and the rotating brush 208 for the lower surface 11M' corresponding to the digit of the plate-like object 10 to be polished.
, 'f: Fl: ijν1], and positional rotation due to wear of the upper and lower rotating brushes 204 and 208. The stage will be explained next.

220 is a servo motor. 222 is a pole fluff, servo motor 220 & C force y
The rotation of the servo motor 220 is transmitted through the knoll ring 224'tx-.

226 is a floating frame It is raised and lowered by the ball screw 2220 rotations.

228 is a nut holder, both ends of the flow f 4 y ri 7 v-me 226 Vc13!1
One brush is provided, and the same number of rotating brushes 204 for the upper surface or rotating brushes 208 for the lower surface are provided.

Reference numeral 230 is a screw shaft, which is rotatably supported by the nut holder 228 and supports the upper rotating brush 204.
Or, ``the bearings 232 that pivotally support both ends of the FOIl rotating brush 208 are raised and lowered by rotation.

By such means, υ, the rotary bush 204 for the upper-''F plane
．． The position of 208 is automatically adjusted.

That is, the thickness of the plate-shaped object to be polished is measured by the above-mentioned thickness measuring device, and the control circuit performs a predetermined calculation on the signal of the plate thickness measurement value, and the obtained control signal is sent to the servo starter 220. Then, the servo motor 220 is rotated to adjust the positions of the upper and lower surface co-rotating brushes 204 and 208.

In addition, upper and lower surface rotating brushes 204. A signal corresponding to wear due to polishing 208 is calculated in the control circuit along with the f@ number of the plate-shaped body, and a predetermined 1-section is performed.

Due to the rotation of the servo motor 220, the pole fluff 222 rotates, the floating frame 226 is sealed, and the plurality of screw shafts 230 connected via the nut holder 228 rotate in the same manner, and the plurality of screw shafts 230 rotate in the same manner.
It is reported that the rotating brushes 208 for 4J are moved in opposite directions by the same amount of distance, but depending on the wear and tear of the rotating brushes 4.208 for upper and lower IOj, different distance rules may be used.

Reference numeral 234 is a handle for rotating the screw shaft 230, and by manually rotating the handle 234, the upper rotating brush 204 and the "F commercial rotating brush 2" are rotated.
08 each position k - ft & every I/c base year pi +,
This is because the wear and tear of the upper and lower rotating brushes 204 and 208 is different, and the reference plate surface and the upper and lower rotating brushes 204 and 2 are different.

236 is a guide bar, 238 is a barga It is Ido.

The rotation of the servo motor 220 generates a 7'Cfm signal from the rotary encoder 302, which is counted by the counter 304.
Send the signal to 11 data 11λ constant circuit 306vC,
The positional movement and theta are determined: In the first path 306, the position data of the upper rotating brush 204 and the lower rotating brush 208 are recorded.

Also, brush correction 6! In the constant circuit 308, a signal 'f for correcting the wear caused by the polishing W9 of the upper rotating brush 204 and the r-heavy rotating brush 208 is transmitted.

The signal from the rough board thickness sensor 164 is the binary conversion circuit 3xo? J:#r= is input to the averaging circuit 312, and in the averaging circuit w1312, it is operated by the signal from the photosensor 166 and averages (a) of the thickness data from the plate thickness sensor 164.

The averaging circuit 312 and the data dazzling circuit 306
, and the Ibi number r comparison calculation circuit 314vc from the brush correction code setting time IM 308, and the comparison calculation circuit 31
4r, data for correcting the positions of the upper μs rotary brush 204 and the lower surface rotary brush 208 are transferred to the data transfer circuit 31.
6, the first servo motor control circuit 318 and the second
In the 5SPg1 servo motor control circuit 318vc, the upper rotating brush 20 is sent to the servo motor control circuit 320.
A control signal is sent to the servo motor 220 that self-adjusts the 4th place t i', and b' 2 servo motor ti * 11 circuit 3
At 20, a control signal is sent to the servo motor 220 that controls the position k RIM of the rotary brush 208 for V; L [11].

Also, if the average 1 (?i is outside the value of 131 runs) for a plate thickness of 1111 constant i1, then the ratio I Kinhama'!;':
, υ′! 1 path 314 to that effect (, -1 is sent through the entire data transfer circuit 316 to the motor 182 9, roller 1
040 Rotation τ is stopped, and the horizontal transfer of the plate-shaped body 10 is temporarily stopped.

Then, the plate-shaped body 10 within the predetermined range transferred before the stopped plate-shaped body lO outside the fixed range of Di passes through the double-sided polishing @ 200 and after the polishing is completed, the upper and lower parts are polished as described above. The position of the rotary mouth brushes 204 and 208 is set to -, and the timer circuit 330
A signal to rotate the scraper 182 is sent to the motor 182, the motor 182 rotates again, the roller 104 rotates, and polishing of the plate-shaped object 10 is resumed.

324 and 326 are rotating brush position 1 water correction circuits, which send signals to the position data setting circuit 306, respectively, and adjust the position I of the upper surface IB1 rotating brush 204 and the lower surface rotating brush 208.
Supplementary instructions for setting I4: are provided.

As described above, the thickness of the plate-shaped body 10 to be polished and the rotating brushes 204 and 208 for the upper and lower surfaces are determined.
It goes up or down depending on the wear and tear.

322 is an actuator control circuit, which sends a control signal to the actuator 144 in response to a signal from the photosensor 122;
is operated to raise and lower the pinch roller 142.

FIG. 4 shows the air pressure of the thickness measuring device 100. A circuit diagram is shown.

The air coming out of the air source 402 passes through a lubrication unit 410 consisting of a filter 404, a pressure control valve 406, and a lugifier 408, and then passes through the solenoid pulp 4.
Sent to 12th. When the solenoid pulp 412 is in the state shown in the figure, the air sent to the solenoid pulp 412 passes through the check valve 414α of the speed controller 414, which is a needle valve with a reverse valve, and is press-fitted into the lower side 416α of the cylinder 416. Cylinder 416 rises.

At this time, the actuator 144 rises. Ru.

The air compressed from the top of the cylinder 416 (1!l 416b) passes through the needle valve 418b of the speed controller 418, which is a needle valve with a reversing valve, and the solenoid pulp 41
2 and is discharged from the silencer 420.

When the solenoid pulp 412 is switched to the opposite state from that shown in the figure, air passes through the solenoid pulp 412 and reaches the speed controller 4.
It passes through the No. 18 check valve 4188 and is press-fitted into the upper part 1416A of the cylinder 416, and the cylinder 416 is lowered.

At this time, the actuator 144 descends, the air is pressed out from the cylinder 416, and the needle valve 414b of the speed controller 414.
k; r14, passes through the solenoid pulp 412, and is discharged from the silencer 420.

The compressed air meets the resistance of the needle valves 414b and 418h, and prevents the cylinder 416 from rising or falling rapidly.

The lifting and lowering of the cylinder 416 is controlled by a limit switch. 0 whose limit is suppressed by switch 422 In addition, solenoid pulp 412U pho It is switched by a signal from the sensor 122.

424 is a pressure control valve, 426.428 is a pressure gauge, 430.432.434 is a cylinder, 436
．． 438.440 is upper/lower rotating brush 204.20
8 is a motor that moves the ground.

The air circuit described above is used to determine the thickness. FIG. 5 shows an operational diagram of each part of the thickness 1j111 fixing device 100 and the double-sided polishing device 200.

Effects of the Invention According to the present invention, since the thickness of the plate-shaped body is reduced and the positions of the upper and lower rotating brushes are automatically determined according to the thickness, it is possible to prevent the occurrence of defective plate-shaped bodies.

Also, in order to reduce the wear and tear of the rotating brushes for the upper and lower surfaces, the positions of the rotating brushes for the upper and F surfaces are adjusted by counting the teeth, so in rare cases, some thicknesses must be polished by 9-9. Is possible.

Therefore, it is possible to obtain a plate-shaped body of a constant quality, it does not require a large number of experts as in the past, and the manufacturing cost can be reduced.

Figure 2 is a partial side view of Figure 1, Figure 3 is the unexploded 10...
... Plate-shaped body, 122 ... Photo sensor, 142 ...
・Pinch roller - 1144...Actuator, 162...Inspection roller, 164...
・Plate thickness sensor, 166...photo sensor,
202... lower bell), 204...
Rotating brush for upper surface, 206...upper bell),
208... Rotating brush for lower mouth, 220...
··Servomotor,

Claims (1)

[Claims] 1. In a double-sided polishing machine for polishing both upper and lower surfaces of a plate-shaped body using a rotating brush while conveying the plate-shaped body substantially horizontally, the surfaces of both sides of the plate-shaped body are polished to a selected finish setting thickness. Automatic lifting and lowering steps for raising and lowering the upper and lower rotating brushes at the same time or separately for polishing, and polishing of the brushes when rotating the upper and lower surfaces. The reference position f of the axis of rotation according to the change in diameter due to the change in diameter: Manual lifting means for adjusting the adjustment, and double-sided grinding of the plate-shaped body 1F! ? 2. The automatic elevator R includes a support mechanism for vertically movably supporting the rotating brush, a drive mechanism for driving the support mechanism, and a drive mechanism for driving the support mechanism.
A double-sided polishing machine according to claim 1, comprising an electric control circuit for controlling a JIJ machine. 3. The polishing method according to claim 1, wherein a plurality of rotating brushes are provided on each of the upper and lower sides. 4. The automatic outer 11 means includes a servo motor, a drive mechanism comprising a pole screw connected to the servo motor via a coupling and transmitting the rotation of the servo Tanabata, and a floating frame that is raised and lowered by the rotation of the ball screw; At each end of the 70-ring frame, there is a threaded shaft rotatably supported by the same number of nut holders as the nine rotary brushes, each having a surface H angle, and both ends of the rotary brush are pivotally supported.
a support mechanism including a bearing that moves up and down as the screw shaft rotates, and a frame in which a manual lifting means rotatably supports the screw shaft that moves the polishing brush roll bearing up and down through the rotation; An h-J arrangement consisting of a handle fixed to a threaded shaft on one side of the frame, and a mechanism for transmitting the rotation of the handle to the threaded shaft on the opposite side of the frame.
it'F The polisher according to claim 1. 5. The electrical control circuit averages the data of the thickness of the plate-like body from the plate thickness sensor (No. a μ-tally encoder that emits a signal when the servo motor rotates; a counter that counts signals from the tube-tally encoder; a position data setting circuit for setting position data of the rotating brush; a brush correction signal setting circuit for setting a signal for correcting wear due to polishing of the upper rotating brush and the lower rotating brush; and (1) an averaging circuit; Data for adjusting the positions of the upper rotating brush and lower rotating brush based on the signals from the position data setting circuit and the brush correction signal setting circuit, and the comparison calculation circuit that calculates the data and transfers the signal from the comparison calculation circuit. Consisting of a data transfer circuit, and a first servo motor control circuit and a second servo motor control circuit that control respective servo motors that adjust the positions of the top rotating brush and the bottom rotating brush according to signals from the data transfer circuit. A polishing machine according to claim 1.