JPH0536639Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (Field of Industrial Application) The present invention relates to a cutter-travel type panel cutting machine for cutting glass epoxy printed circuit boards, non-ferrous metal plates, etc.

<Conventional technology> Laminated materials such as epoxy printed circuit boards and Bakelite circuit boards are molded into large size plates and then cut into required sizes to produce products. Conventionally, the shearing cutting method and rotary cutting method have been used to cut laminated materials (processed materials) for this purpose, but there are issues such as the smoothness of the cutting surface, the perpendicularity of the cutting edge, the occurrence of cutting burrs, etc. The rotary cutting method is recommended due to the following reasons. In order to cut this type of laminated material, a plurality of laminated plates are stacked and clamped, and these are cut at once, thereby achieving high precision and high efficiency of the work.

<Problems to be solved by the invention> By the way, when cutting printed circuit boards, the cutting conditions are such that laminated materials made of different materials such as hard materials, plastics, and gold foils are cut at once with one cutter. Due to the poor quality of the material, it is difficult to maintain the sharpness of the cutter over a long period of time. Cutting burrs occur on the material in the cutter feeding direction.

Conventionally, a single piece of material in which cutting burrs have occurred has to be discarded after cutting, and the material loss that accompanies cutting has become impossible to ignore.

Therefore, the present invention adopts a cutter traveling system in the above-mentioned rotary cutting type panel cutting machine, uses a down cut, and is equipped with a corresponding adjustment mechanism for the lower cutting edge.
It is an object of the present invention to provide a cutting machine which solves all of the above-mentioned problems inherent in conventional devices.

B. Structure of the invention (Means for solving the problems) In order to achieve the above object, the machine of the invention has the following structural requirements.

(1) The workpiece is pressed and clamped from above and below along the cut surface, and the cutter is made to move (feed) relatively along the cut surface, and the drive direction of the cutter blade is When making a down cut, the cutter slightly cuts one side of the lower table face cutter of the clamping means, while the lower table face cutter slightly cuts this side at the end of each cutting cycle. A panel cutting machine characterized in that a constant amount of cutter is intermittently fed toward the cutting side in synchronization with.

(2) A pair of blade openings on the lower table surface of the clamping means provided along the cutting surface of the workpiece are installed symmetrically with respect to the cutter running surface and with an interval slightly narrower than the blade thickness of the cutter. , each cutting edge member is rotatably supported in a direction perpendicular to the cutter running surface, and has a feed screw shaft equipped with a pair of lead screws cut in opposite directions, and a nut screwed onto the lead screw. The panel cutting according to item (1) above, wherein the feed screw shaft is driven by a certain amount each time a cutting cycle is completed to maintain the original blade gap. machine.

(3) The panel cutting machine according to item (1) or (2) above, wherein the lower table surface blade material is made of Bakelite material and is detachably attached to the table surface.

(4) After clamping the workpiece, the disc-shaped cutter descends relatively, then travels (feeds the workpiece) while cutting down the workpiece, and when the workpiece is finished cutting, the clamping means and disc-shaped cutter is raised and said cutter returns to its old position to prepare for the next process.
The panel cutting machine described in (1) to (3).

<Operation> (1) Trimming and cutting of the processed material is performed according to the steps described below.

(a) When multiple workpieces (panels) are stacked and set on the workpiece table, the clamp finger moves forward to position the workpieces for edge cutting on the reference surface.

(b) After feeding the workpiece and positioning the workpiece by pressing its end face against the tip of the clamp finger, the workpiece is clamped and the reference surface edge thereof is cut.

(c) Press the edge of the reference surface against the indexing ruler and clamp the part with the clamp finger.

(d) Retract the clamp finger and indexing ruler beyond the cutting surface of the machine to the opposite side and then advance them together with the workpiece to position said workpiece to the set dimensions.

(e) Clamp the workpiece and cut the end face opposite to the reference surface edge to form a new edge.

(f) Advance the workpiece a fixed distance against the cutting surface, clamp the workpiece there and cut it. Thereafter, the above processing is repeated. In this way, the workpieces return to the old workpiece table surface in a state where they have all been cut to size.

(g) Further turn the workpiece by 90 degrees and repeat the steps (a) to (f) above.

(2) Cutting cycle of disc-shaped cutter (a) After the disc-shaped cutter and the clamping means for the workpiece descend and clamp the workpiece along the cutting surface, cutting is performed.

(b) At this time, the cutting direction of the cutter edge should be a down cut corresponding to the feed direction for the workpiece. At the same time, the cutter cutting edge slightly cuts the side surface of the lower table surface of the clamping means, and during cutting, supports the bottom surface of the lowest piece of the stacked workpieces with the table surface blade. , so that "burrs" caused by the cut do not occur on the cut surface.

(c) After cutting the workpiece, the clamping means and the cutter are raised and returned to their old positions to wait for the next process.

At this time, the clamping means is released so that the workpiece can advance by a fixed distance relative to the cutting surface.

In view of the above, it is understood that the cutter does not necessarily have to be a disc-shaped cutter to achieve the purpose. The important conditions here are that the cutting direction of the cutter edge is a down cut, that is, one of the members in the clamping means for the workpiece, facing the lower table surface cutting edge side, and that the cutting edge faces the cutting edge side of the table surface. It's just a matter of cutting it down a bit. Therefore,
When the above-mentioned technique is modified and the cutting edge of the cutter cuts the workpiece in an upward direction relative to the feed, the cutting edge on the upper side of the clamp table is adjusted by a small amount of movement.
Naturally, means will be adopted to prevent the occurrence of burrs due to cutting of the workpiece.

(3) Lower table surface blade moving means (a) As stated in item (2) above, each time a cutting cycle ends, the lower table blade surface is cut a small amount, so the gap between the blade surfaces is reduced. In order to maintain a constant value, the blade face is intermittently fed out a certain amount in the direction of the cutting surface after the cutting cycle is completed.

(b) The blade tip is made of Bakelite material and can be installed and removed with a single touch, and its feed in the direction of the cutting surface is controlled by a drive motor that operates in conjunction with the cutting cycle, and which rotates in conjunction with the same motor. This is done by means of a lead screwed shaft.

<Example> An example of the machine of the present invention will be described below, but this example is merely a typical example of the present invention, and the constituent elements of the present invention are limited based on its structure. It is not allowed to be interpreted in any way.

1 and 2 show an overall plan view and a front view, respectively, of a preferred embodiment of the present invention;
In the figure, 1 is the cutter running rail, and here is the saddle 2 on which the disc-shaped cutter and its drive motor are mounted.
is mounted and moved back and forth along the length of the rail using a lead screw. Adjacent to the running rail,
A bellows 3 that continuously covers the circumference of the disc-shaped cutter is provided to cover the rotating cutting blade at all times during processing to prevent danger. This makes recovery easier and protects the sliding part from dust around the machine.

4 is an indexing ruler with a clamp finger (horizontal ruler), 5 is a front workpiece turntable, 6 is a
A vertical ruler 7 provided on one side of the turntable 5 is
A rear indexing surface plate, 8 is a machine control panel, and 9 is a processed material. FIG. 1 shows an indexing ruler 4 with a clamp finger by cutting a part of the traveling rail 1. The ruler cuts the edge of the clamp reference surface of the workpiece 9, and then cuts the edge with the clamp finger. This is a clamped process.

FIG. 3 is an explanatory diagram of the basic cutting cycle of the machine of the present invention, where 9 is a workpiece, 10 is a pressing plate that clamps the workpiece 9 along the cutting surface to the table surface 11 side of the machine, and 12 is a saddle. In the figure, the position of the mark is the original (fixed) position of the disc-shaped cutter 12, and the position of the mark is the position of the disc-shaped cutter 12 at the workpiece 9.
The cutter 12 has already cut the side surface of the lower cutting edge of the table at the cutting preparation position where it has descended to cut. Disc-shaped cutter 12
is given a counterclockwise rotation in the figure, and the workpiece 9
A down cut is performed on the This operation is performed by a pneumatic mechanism within the saddle.

The marked position is the end point position where the rotation axis of the disc-shaped cutter 12 is fed so as to move parallel to the surface of the workpiece 9, and the cutter 12 substantially moves the workpiece from the marked position to the marked position. 9 and the side surface of the lower cutting edge of the table is being cut. that time,
Since the lower side of the cutting edge of the table supports the lower side of the cut surface of the workpiece, no cutting burrs occur on the lower surface of the workpiece 9.

The position of the mark is a position raised from the position in order to return (fast-forward) the disc-shaped cutter 12 to its original position after cutting has been completed.

The disk-shaped cutter 12 is fed and returned in the direction of cutting the workpiece by moving the saddle by a lead screw shaft provided along the traveling rail.

FIG. 4 shows the process of cutting the workpiece, and the machining progresses in the order of (1) to (8).

In the figure, (1) shows the workpiece 9 set along the front turntable vertical ruler, and (2) shows the workpiece 9 with the clamp finger moving forward.
When the reference surface edge has been positioned for cutting, the workpiece 9 is sent and the edge corresponding to the reference surface edge is pressed against the tip of the clamp finger, thereby positioning the workpiece 9 and performing the above cutting cycle. This is an edge cut based on the process described.

(3) is a process in which the workpiece 9 is pressed against the indexing ruler 4 and the reference surface edge is clamped by the clamp finger.

(4) is the clamp finger and index ruler 4.
A state in which the workpiece 9 is clamped and moved back to the opposite side of the workpiece table beyond the cut surface by the cutter.

(5) The retracted workpiece 9 is advanced slightly beyond the cutting surface of the cutter (together with the index ruler) to position the workpiece at the set dimensions, and the excess workpiece is cut off from the end surface. Reference numeral 10 denotes a clamping means.

In (6) and (7), the workpiece 9 is advanced by the set dimension and the fixed-size cutting process is repeated.

(8) After all of the workpieces 9 that have been cut to size are returned to the front workpiece turntable and placed side by side, the turntable is moved 90°
The above-mentioned steps (1) to (8) are repeated again on the rotated and cut-to-size material 9 placed on it in a direction crossing 90 degrees. In this way, all of the processed materials can be cut without waste to obtain printed circuit boards of the required size.

5 and 6 are an enlarged cross-sectional view of the lower table cutting edge showing the table 11 cut along a plane perpendicular to the cutting surface of the workpiece, and a partial cross-sectional view taken along the line - in FIG. In the figure, reference numeral 13 denotes a pair of blade plates made of paquerite plates, which can be attached to and removed from the blade plate holder 15 with a single touch. Reference numeral 14 denotes a path for the disc-shaped cutter, which usually has a width slightly narrower than the thickness of the cutter blade.
Reference numeral 15 denotes a holder for the cutting edge plate 13, which is formed by die-casting aluminum alloy, and each has a nut member 16.
It is connected to the lead screw shaft 17 by. The screw shaft 17 is supported on the table frame, and lead screws 18 are cut in opposite directions.
The nut members 16 are screwed onto the respective nuts 8, and when the screw shaft 17 is rotated, each nut member 1
The pedestal 15 and the cutting plate 13 are configured to move toward and away from each other with respect to the passage 14 of the cutter via the cutter 6. 19 is screw shaft 1
Worm wheel fixed to one end of 7, 20
is a worm that meshes with the wheel 19, and the form 20 is fixed to the output shaft of a drive motor 21.

The drive motor 21 is energized for a certain period of time every time the aforementioned cutter cycle ends, and transmits its rotation to the lead screw shaft 17 via the gear transmission mechanism 19, 20, thereby driving the nut member 16 and therefore the blade. The mouth plates 13 are mutually fixed by a certain amount (for example, 0.02 to 0.03
mm) and transferred to the cutter passage 14 side. As a result, the workpiece is always cut in a state similar to cutting with a back-up sheet on the lower surface, and there is no risk of cutting burrs occurring at the edges of the lower workpiece.

C. Effects of the invention As described above, according to the machine of the invention, the cutting surface of the workpiece is smoother than that of the conventional shearing cutting method, and the accuracy of the right angle of the edge can be improved. Particularly when cutting multiple workpieces (printed circuit boards), it is possible to back up the lowest layer of printed circuit boards by moving the cutting blade in a down-cut direction and applying a lower blade movement method to the workpiece support table. It is said that it has the same effect as stacking sheets, and this prevents burrs and chips on the machined surface due to cutting of the upper and lower workpieces, and minimizes material loss due to cutting.
It produces special functions and effects that could not be expected with conventional machines.

[Brief explanation of the drawing]

1 and 2 are an overall plan view and a front view, respectively, showing a partially cutaway embodiment of the machine of the present invention; FIG. 3 is an explanatory diagram of the basic cutting cycle of the cutter of the present invention; Figure 4 is a process sequence diagram for cutting the processed material, Figures 5 and 6 are
FIG. 2 is an enlarged cross-sectional view of the lower table cutting edge showing the table of the machine cut by a plane perpendicular to the cutting surface, and a partial cross-sectional view taken along the - line in the figure. 1... cutter running rail, 2... saddle, 3
... Bellows, 4 ... Index ruler with clamp finger, 5 ... Front workpiece turntable, 6 ... Vertical ruler, 7 ... Rear index surface plate, 8 ... Machine control panel, 9 ... Processed material (printed circuit board), 10...Clamp plate, 11 ...Table surface, 12...Disc-shaped cutter, 13...Cutter plate, 14...Cutter passage, 15...Cut plate holder, 16 ... Nut member, 17 ... Lead screw shaft, 18 ... Lead screw, 19 ... Worm wheel, 20 ... Worm, 21 ... Drive motor.

Claims (1)

[Claims for Utility Model Registration] (1) The workpiece is pressed and clamped from above and below along the cut surface, and the cutter is moved relatively along the cut surface, and the cutter blade is When the driving direction of the cutter is set to down cut, the cutter slightly cuts one side of the lower table surface cutting edge of the clamping means, while the lower table surface cutting edge cuts the lower table surface cutting edge slightly at the end of each cutting cycle. A panel cutting machine characterized in that, in synchronization with this, a fixed amount of cutter is intermittently fed toward the cutting side. (2) A pair of blade openings on the lower table surface of the clamping means provided along the cutting surface of the workpiece are installed symmetrically with respect to the cutter running surface and with an interval slightly narrower than the blade thickness of the cutter. , each cutting edge member is rotatably supported in a direction perpendicular to the cutter running surface, and has a feed screw shaft equipped with a pair of lead screws cut in opposite directions, and a nut screwed onto the lead screw. Claim (1) of the Utility Model Registration comprising:
Panel cutting machine described in section. (3) The panel cutting machine according to claim 1 or 2, wherein the lower table surface blade material is made of Bakelite material and is detachably attached to the table surface. . (4) After clamping the workpiece, the disc-shaped cutter lowers relatively, then travels while cutting down the workpiece, and when the workpiece is finished cutting, the clamping means and the disc-shaped cutter rise, and the above-mentioned The cutter returns to its old position and prepares for the next processing.
The panel cutting machine described in (1) to (3).