JPH05245801A - Machine for working tapered bore - Google Patents

Abstract

PURPOSE:To provide a tapered bore working machine capable of making a tapered bore precisely at one time of bore work per sheet even in a pliable sheet material of plastic or the like. CONSTITUTION:In a tapered bore working machine 1, following processes are repeated so that respective means is controlled by sequence control means 80. At first, pulling-out cylinders 70a, 70b push out a vinyl chloride sheet at the supply position 101 and, simultaneously, a pushing-up cylinder 20 pushes up the laminated vinyl chloride sheets to a walling position 102, and thereby an unfinished vinyl chloride sheet 100 comes into the lowermost layer. Subsequently, pushing-out means 10 pushes out the unfinished vinyl chloride sheet 100 at the lowermost layer under the vinyl chloride sheet at the working position 104, and after the drill blade 38 of a drilling machine 30 effects tapered bore work on the upper one sheet, pushing-back cylinder 50 pushes back the upper one sheet to the waiting position 102. The pliable sheet material is supported at all times by the lower unfinished pliable sheet material and, therefore, the tapered bore never deforms even in the final stage of the tapered bore work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a taper hole machining machine for forming a countersink hole or the like for a countersunk screw in a material to be processed, and more specifically, it is also suitable for a flexible plate material such as a vinyl chloride plastic plate. The present invention relates to a taper hole machining machine capable of forming a taper hole in a machine.

[0002]

2. Description of the Related Art When a plastic plate such as vinyl chloride is assembled with flat head screws to assemble a plastic product, a flat hole (tapered through hole) is formed in the plastic plate to receive the head of the flat head screw. I need to open. For example, consider a case where a countersink 210 is formed in the plastic plate 200 shown in FIG. Conventionally, in such a case, first use a drilling machine and a normal drill blade as shown in FIG.
The pilot hole 220 is opened as shown in FIG. continue,
Using a drill blade for taper hole drilling, the tip of which has a conical shape with the same inclination as the taper of the hole to be drilled,
The method of making the tapered hole 210 as shown in FIG.

[0003]

However, since plastic such as vinyl chloride is a flexible material, it tends to be deformed by an external force when it is thin. Further, in the case of processing a tapered hole, a pressing force is more likely to be applied to an unprocessed portion in the traveling direction of the drill blade as compared with a straight hole. Therefore, in FIG.
As shown in (C), when the tapered hole 212 is partially drilled just before the end of drilling, the thin front unprocessed portion 212a is stretched by the pressing force of the drill blade. It will be transformed. As a result, as shown in FIG.
14a has a problem that the hole shape becomes distorted and the necessary countersink 210 is not formed. This problem has become more prominent due to the fact that the heat generated by drilling does not escape due to the poor thermal conductivity of the plastic plate, and the processed portion becomes heated and softens.

As the inner diameter of the pilot hole 220 is smaller than the minimum inner diameter of the taper hole 210, the degree of this deformation increases, and when the inner diameter of the pilot hole 220 is substantially equal to the minimum inner diameter of the taper hole 210, it is deformed. Is relatively small, but never completely disappears. Further, in such a conventional method, as shown in FIGS. 5 (A) and 5 (B), it is necessary to process the holes twice for each plastic plate, and there is a problem that the process takes time. .. Therefore, an object of the present invention is to provide a taper hole drilling machine capable of accurately drilling a taper hole in a flexible plate material such as a plastic plate by performing a single hole drilling process per sheet.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a taper hole machining machine for forming a taper hole in a flexible plate material such as a plastic plate, which is flexible at the machining position. Hole machining means having a tapered hole machining blade that advances and retracts in a direction substantially perpendicular to one surface of the flexible plate material with respect to the flexible plate material, and a side on which the tapered hole machining blade of the flexible plate material at the machining position advances and retracts. A plate material adding means for adding one flexible plate material to the opposite side, and a plate material removing means for extracting one flexible plate material on the advancing / retreating side of the tapered hole machining blade from the flexible plate material laminated at the processing position,
The following procedure for the taper hole processing means, the plate material adding means and the plate material extracting means, namely, (1) activating the plate material adding means of the taper hole processing blade of the flexible plate material placed at the processing position. Add one flexible plate material to the side opposite to the advancing and retracting side, (2) operate the tapered hole machining means to advance and retract the tapered hole machining blade with respect to the flexible plate material laminated at the machining position. Taper hole machining,
(3) Sequence control means for repeatedly operating in accordance with a procedure of operating the plate material extracting means and extracting one flexible plate material on the advancing / retreating side of the tapered hole machining blade from the flexible plate material laminated at the processing position, and Created a taper hole drilling machine with.

[0006]

In the taper hole drilling machine according to the present invention having the above-mentioned structure, the sequence control means controls each means in order to perform the taper hole drilling as follows.
Note that, for convenience of description, the description will be made from the state in which the taper hole processing for the flexible plate material is completed and one flexible plate material on the side where the tapered hole machining blade advances and retracts is extracted from the flexible plate material stacked at the processing position. To do. [1] The plate material adding means is actuated to add one flexible plate material to the side opposite to the advancing / retreating side of the tapered hole machining blade of the flexible plate material placed at the machining position. [2] The taper hole machining means is operated, and the taper hole machining blade is advanced and retracted with respect to the flexible plate material laminated at the machining position to perform the taper hole machining. [3] The plate material extracting means is operated to extract one flexible plate material on the side where the tapered hole machining blade advances and retracts from the flexible plate material laminated at the processing position. [4] The above [1] to [3] are repeated.

As a result, the setting of the flexible plate material to the machining position, the taper hole machining, and the take-out of the machined plate material are sequentially repeated, and the taper hole machining is automatically performed. here,
When the flexible plate material on the side where the tapered hole machining blade advances and retracts at the machining position is tapered hole, one or more flexible plate materials added by the plate material adding means are always placed on the opposite side of the tapered hole machining blade. There is. Therefore, even in the final stage of taper hole processing, the flexible plate material to be tapered is supported by the added flexible plate material, so that the taper hole is not deformed by the pressing force of the tapered hole processing blade. Then, by repeating the above steps, the taper hole to be machined can be accurately drilled by performing the taper hole machining once for one flexible plate material. In this way, it is possible to accurately make a tapered hole in a flexible plate material such as a plastic plate by making a hole once for each sheet.

[0008]

【Example】

First Embodiment Next, a first embodiment embodying the present invention will be described with reference to FIGS. 1A and 1B are views showing a first embodiment of a taper hole drilling machine of the present invention. FIG. 1A is a plan view of the first embodiment of the taper hole drilling machine, and FIG. 1B is a side view thereof. Further, FIG. 2 is a perspective view showing a first embodiment of the taper hole drilling machine, and FIG. 3 is a view showing a pushing-back means of the first embodiment. In FIG. 1, reference numeral 1 is a taper hole machining machine for tapering a vinyl chloride resin plate 100 as a flexible plate material. This taper hole drilling machine 1
Includes a surface plate 8 to which a mechanism for stacking the vinyl chloride plates 100 and a mechanism for moving the vinyl chloride plate 100 in a horizontal direction are attached, a drilling machine 30 for performing the tapered hole machining, and a control unit 80 for controlling each mechanism. It is configured as the center. Hereinafter, the configuration of each unit will be described in detail. In the following description, reference numerals 101 to 104 indicate each position where the vinyl chloride plate 100 moves and also the vinyl chloride plate 100 itself placed at each position.

As shown in FIG. 1A, a pair of support bases 58a and 58b are provided on the surface of the surface plate 8 so as to be divided into left and right sides in the drawing.
Are fixed, and a pair of support rails 60a, 60b are fixed on the support bases 58a, 58b. As shown in FIG. 1 (B), the lower surfaces of the support rails 60a, 60b are floated from the surface plate 8 by a height slightly larger than the thickness of one of the vinyl chloride plates 100, as shown in FIG. 1 (B). The support rails 60a and 60b are shown in FIG.
As shown in FIG. 4, the laminated support plate 62 has a U-shaped cross section, and two laminated support plates 62 are fixed in each of the U-shaped grooves. Then, as shown in FIG.
Four stacked support plates 6 between the support rails 60a and 60b
The vinyl chloride plates 100 are stacked at the position (101) sandwiched between the two. The height of the stacking support plate 62 is made high so that it can be supported even when several tens of vinyl chloride plates 100 are stacked. Note that in the perspective view of FIG. 2, two of the four stacked support plates 62 are not shown.

With respect to the support rails 60a and 60b,
A withdrawal plate 64 is provided on the lower side of FIG. 1 (A) and on the left side of FIG. 1 (B). The extraction plate 64 is a large plastic plate made of a vinyl chloride resin of the same material as the vinyl chloride plate 100, which is slightly thinner than the thickness of one of the vinyl chloride plates 100. Attachment portions 66a and 66b are integrally fixed at two locations to one end of the extraction plate 64, and air cylinders 70a and 70 as actuators are attached to the attachment portions 66a and 66b.
It is attached to b. This air cylinder 70a, 7
The main body 0b is fixed to the surface plate 8, and pistons 73a and 73b are slidably fitted to the air cylinders 70a and 70b. And the pistons 73a, 73
Bifurcated mounting portions 74a and 74b are fixed to the tip of b. The attachment portions 66a and 66b of the extraction plate 64 are sandwiched between the attachment portions 74a and 74b, and the pins 68a and 68b pass through the both, so that the extraction plate 64 is attached to the pistons 73a and 73b.

Further, compressed air introduction ports 72a and 72b are provided at the front ends (piston side) of the air cylinders 70a and 70b.
However, compressed air introduction ports 71a and 71b are provided at the rear end portion. Then, the compressed air tubes 171a, 171b, 1 are respectively connected to the compressed air introduction ports 71a-72b.
72a and 172b are attached. The compressed air tubes 171a and 171b are connected to the compressed air tube 171 by a three-way connector 78, and the compressed air tube 171 is connected to a control unit 80 described later.
Similarly, the compressed air tubes 172a and 172b are connected to the control unit 80 via the compressed air tube 172 by the three-way connector 76. By supplying compressed air to either the compressed air tube 171 or 172, the pistons 73a and 73b move forward and backward with respect to the air cylinders 70a and 70b. As a result, the extraction plate 64 is fixed to the support rails 60a and 60b.
It goes under the gap below and moves forward and backward on the surface plate 8.

Support rail 60b of the support rail 60a
A cover plate 56 is attached to the side surface opposite to the side surface. As shown in FIGS. 1B and 2, the cover plate 56 is a thin vinyl chloride plate having a substantially L-shaped cross section, and the tip portion 5 on the side opposite to the fixed portion to the support rail 60a.
6a has a shape bent upward. The cover plate 56 is attached to the lowermost portion of the side surface of the support rail 60a so that the chips produced during the processing of the taper hole of the vinyl chloride plate 100 will not be applied to the unprocessed vinyl chloride plate. On the farther side of the cover plate 56, stopper plates 16 are fixed at three positions on the surface plate 8 as shown in FIGS. 1 (A) and 2. This stopper plate 16
Is for stopping the vinyl chloride plate 100 pushed forward by the extraction plate 64 and moving forward at a predetermined position.
At the same time, the stopper plate 16 sandwiches the vinyl chloride plate 100 between the stopper plate 16 and the leading end of the extraction plate 64 at the forward position, so that the vinyl chloride plate 10 in the left-right direction in FIG.
It also serves to guide the movement of 0.

Further, as shown in the upper left part of FIG. 1 (A), an air cylinder 10 for pushing the vinyl chloride plate 100 rightward is fixed to the surface plate 8. A piston 13 is slidably fitted in the air cylinder 10, and a compressed air inlet 1 is provided at the front end (piston side).
2, the compressed air introduction port 11 is provided at the rear end. Compressed air tubes 111 and 112 are attached to the compressed air introduction ports 11 and 12, respectively, and the compressed air tubes 111 and 112 are connected to a control unit 80 described later. On the other hand, a push-out plate 15 is fixed to the tip of the piston 13. As shown in FIG. 2, a mounting portion 15a is provided upright on the rear end of the push plate 15. The tip of the piston 13 penetrates the mounting portion 15a, and the two bolts 14 are screwed with the mounting portion 15a sandwiched therebetween, whereby the push-out plate 15 is detachably fixed to the piston 13.

The extrusion plate 15 is a vinyl chloride plate 10.
It is made of the same vinyl chloride resin as 0, and has the same thickness as the vinyl chloride plate 100 as shown in FIG. And, the upper part of the tip is notched, and the standby position 10
10 of the bottom layer of the vinyl chloride plates 100 laminated on 2
It works to push out only 0a. By supplying compressed air to the compressed air tube 111 or 112, the piston 13 moves forward and backward with respect to the air cylinder 10, and at the same time, the push-out plate 15 moves forward and backward in the horizontal direction of FIG. .. At this time, the pushing plate 15 is guided by being sandwiched between the three stopper plates 16 and the tip end when the extraction plate 64 is at the forward position.

As shown in FIG.
As shown in (B), a through hole 18 is formed in the surface plate 8, and an air cylinder 20 for pushing up the vinyl chloride plate 100 is fixed to the surface plate 8 below the through hole 18. A piston 23 is slidably fitted in the air cylinder 20, a compressed air introduction port 22 is provided at a front end portion (piston side), and a compressed air introduction port 21 is provided at a rear end portion. Compressed air tubes 121 and 122 are attached to the compressed air inlets 21 and 22, respectively, and the compressed air tubes 121 and 122 are connected to a control unit 80 described later. The piston 23 is inserted into the through hole 18 of the surface plate 8, and the compressed air is supplied to the compressed air tube 121, so that the piston 23 moves forward with respect to the air cylinder 20. Is projected on the face of. As a result, the vinyl chloride plate 100 at the standby position 102 shown in FIGS. 1 and 2 is pushed up by the tip of the piston 23, as will be described later.

Further, as shown in FIGS. 1 and 2, a drilling machine 30 is provided above the surface plate 8. As shown in FIG. 1 (B) and FIG. 2, the drilling machine 30 is fixed above the surface plate 8 by the support columns 30a, and the main shaft 3 is attached to the lower surface thereof.
Have four. The main shaft 34 can be rotated by a motor mechanism (not shown) built in the drilling machine 30.
A drill chuck 36 is fixed to the tip of 4. A taper hole drill bit 38 having a conical shape with the same inclination as the taper of the tapered hole to be processed is detachably attached to the drill chuck 36. The tapered hole drilling blade 38 rotates integrally with the spindle 34 and the drill chuck 36 by the operation of a motor mechanism (not shown). Further, a drill up / down lever 32 is provided on the side surface of the drilling machine 30, and by rotating the drill up / down lever 32 in the up / down direction, while maintaining the rotation of the main shaft 34 by a motor mechanism (not shown), the drill chuck 36, The entire main shaft 34, including the tapered drill bit 38, can be moved up and down. The drilling machine 30 is a commercially available product having a normal structure, and detailed description of the structure is omitted.

Below the drill up / down lever 32, a drill blade up / down air cylinder 40 is attached.
This drill blade up / down air cylinder 40 is swingably attached to the surface plate 8 by an attachment member 46, a part of which is shown in FIG. 1 (B). A piston 43 is slidably fitted in the drill blade up / down air cylinder 40, and a compressed air introduction port 42 is provided at a front end portion (piston side) and a compressed air introduction port 41 is provided at a rear end portion. ing. The compressed air introduction ports 41 and 42 are connected to the control unit 80 by compressed air tubes 141 and 142, respectively. A bifurcated mounting member 44 is fixed to the tip of the piston 43.
4 sandwiches the tip of the drill up / down lever 32,
The drill vertical lever 32 is rotatably connected to the piston 43 by the pin 45 penetrating both. Therefore, the compressed air tube 141 or 142
When compressed air is supplied to the drill, the drill up-and-down lever 32 rotates up and down together with the piston 43, whereby the tapered hole drilling blade 38 moves up and down. Therefore, in the tapered hole drilling machine 1, the drilling machine 30 and the drill blade up / down air cylinder 40 move forward / backward with respect to the flexible plate material 100 stacked at the working position 104.
8 functions as a taper hole processing means.

Further, as shown in the upper right part of FIG. 1 (A), an air cylinder 50 for pushing back the vinyl chloride plate 100 to the left is fixed to the surface plate 8. A piston 53 is slidably fitted to the air cylinder 50, and a compressed air introduction port 52 is provided at the front end (piston side).
A compressed air introduction port 51 is provided at the rear end portion. The compressed air inlets 51 and 52 are respectively provided in the compressed air tube 15
1, 152 are connected to the control unit 80, and when compressed air is supplied to the compressed air tube 151 or 152, the piston 53 moves back and forth with respect to the air cylinder 50. A push-back member 55 is fixed to the tip of the piston 53. The push-back member 55 will be described in more detail with reference to FIG.

A female screw (not shown) is provided at the rear end of the push-back member 55. The push-back member 55 is screwed into a male screw at the front end of the piston 53 and tightened with a fixing bolt 54, so that the push-back member is returned as shown in FIG. 55 is fixed to the piston 53. The push-back member 55 is a cylindrical member made of metal, and as shown in FIG. 3, a large-diameter collar portion 55a is provided near the rear end thereof. Then, as the piston 53 moves forward and backward, the push-back member 55 integrally moves forward and backward over the surface plate 8 in the left-right direction in FIG.
When the push-back member 55 advances leftward in FIG. 3 together with the piston 53, as shown in FIG. 3 (C), the tip of the push-back member 55 is the second chloride from the bottom of the vinyl chloride plate 100 at the processing position. It contacts the vinyl plate, that is, the vinyl chloride plate 100b that has just finished the processing of the tapered holes.
Then, as shown in FIGS. 3D and 3E, the vinyl chloride plate 100b and the vinyl chloride plate 100c laminated thereon are pushed back to the left.

On the other hand, only the lowermost vinyl chloride plate 100a does not come into contact with the tip of the push-back member 55 and remains in that position (FIG. 3 (D)). However, the piston 53 does not stop at this position and moves forward by the distance L. As a result, as shown in FIG. 3 (E), the collar portion 55a of the push-back member 55 contacts the lowermost vinyl chloride plate 100a and moves it to the left by the distance L. At this time, compressed air is supplied to the compressed air supply unit 12 of the air cylinder 10, and the push plate 15 moves leftward together with the piston 13. After that, the push-back member 55 is returned to the position shown in FIG. Thus, as shown in FIG. 3C, the tip of the push-back member 55 and the vinyl chloride plate 10 are
A gap having a length L is formed between it and 0b. by this,
As shown in FIG. 1B, when the piston 23 of the push-up cylinder 20 is raised and the vinyl chloride plate 102 in the standby position is pushed up to the state 103 in the next step, it is caught at the tip of the push-back member 55. The situation that hinders the rise is prevented.

Here, the standby position 10 shown in FIGS.
As shown in FIG. 3, a stopper plate 17 is provided on the left side of the vinyl chloride plate 100 laminated on the No. 2 board. The stopper plate 17 is provided on a support column (not shown) provided upright on the support rail 60a so as to extend horizontally and float above the surface plate 8. And FIG. 3 (A)-
When the vinyl chloride plates 100a to 100c shown in (E) are moved to the left and right, the laminated vinyl chloride plates 100c, which have finished the taper hole processing, are supported so as not to go too far to the left or collapse. .. The support pillar (not shown) to which the stopper plate 17 is fixed is slidably fitted in the U-shaped groove of the support rail 60a. Then, when tapering holes of the vinyl chloride plates 100 having different lengths, the support column (not shown) is slid in the groove of the support rail 60a to move the position of the stopper plate 17 in the left-right direction in FIG. .. In this way, the vinyl chloride plate 100 for processing tapered holes
When the length of the push plate 15 is changed, it is necessary to change the position of the stopper plate 17 and the length of the push plate 15. Note that the stopper plate 17 is not shown in FIGS. 1 and 2.

Further, as shown in FIGS. 3B and 3C, a drill stopper 35 extending downward in parallel with the tapered hole drilling blade 38 is provided near the tapered hole drilling blade 38. Has been. This drill stopper 35
It is supported by a supporting member (not shown) near the tapered hole drilling blade 38 via a spring. Then, when the spindle 34 descends together with the tapered hole processing drill blade 38,
It is pushed down by the lower end of a bearing (not shown) of the main shaft 34 of the drilling machine 30 shown in FIG. 1 (B). As shown in FIG. 3, the lower end of the drill stopper 35 extends close to the tip of the tapered hole drilling blade 38, and when the tapered hole drilling blade 38 bites a predetermined depth from the surface of the vinyl chloride plate 100b. The lower end surface of the drill stopper 35 contacts. With this, the tapered hole drilling blade 38
Can no longer descend, and after a certain time has passed at this position, the timer relay switch will work later.
The air cylinder 40 for moving the drill blade up and down is actuated, and the drill blade 38 for processing the tapered hole rises. Therefore, if the position of the lower end of the drill stopper 35 with respect to the tip of the tapered hole drilling blade 38 is adjusted in advance, the vinyl chloride plate 100b can be used every time.
A taper hole 108 having the same depth will be drilled from the surface.

In this way, even if the thickness of the vinyl chloride plate 100 varies, the tapered holes 108 having the same depth and the same size can be opened with good reproducibility. That is, in a plastic plate made of vinyl chloride or the like, there is a variation in thickness of 0.1 to 0.2 mm even if the plate has the same nominal size. Therefore, merely by adjusting the height of the tip end position of the drill hole 38 for processing the tapered hole from the surface plate 8, the depth of the opened tapered hole 108 is displaced by 0.1 to 0.2 mm. However, in the taper hole drilling machine 1 of the present embodiment, since the above-mentioned drill stopper 35 is provided, such inconvenience does not occur. Further, an air gun (not shown) is provided near the processing position of the drill stopper 35. From this air gun to the drill stopper 35
By blowing compressed air to the lower end of the drill stopper, chips of vinyl chloride are prevented from adhering to the lower end surface of the drill stopper 35 and causing an error. The drill stopper 35 is not shown in FIGS. 1 and 2.

Further, as shown in FIGS. 1A and 2, a control unit 80 is provided near the surface plate 8 and the drilling machine 30. The control unit 80 includes six air cylinders 10, 20, 40,
Five sets of compressed air tubes 111, 112, 121, 122, 14 for supplying compressed air to 50, 70a, 70b.
1, 142, 151, 152, 171, 172 are connected. In the control unit 80, five electromagnetic valves to which the above-mentioned five sets of compressed air tubes are connected are built-in, and in these five electromagnetic valves, compressed air is supplied from the air compressor in the control unit 80. Supply pipe 18
0 is connected. Then, each solenoid valve is controlled by the control unit 80, and a pipe 180 is provided in each solenoid valve.
Compressed air from the pair of compressed air tubes (111
And 112, etc.) are switched.
As a result, compressed air is supplied to either the compressed air introduction port (11 or the like) on the rear end side of each air cylinder or the compressed air introduction port (12 or the like) on the front end portion.

As shown in FIGS. 1A and 2, the control unit 80 includes a spindle 3 of the drilling machine 30.
A power supply line 130 for operating a motor mechanism (not shown) for rotating 4 is connected. Further, as will be described in detail later, proximity switches (not shown) are attached to the air cylinders 10, 50, 70a, 70b of the six air cylinders 10-70b.
These proximity switches are used for the air cylinders 10, 50, 7
0a, 70b is attached to a predetermined position on the outside of the main body, and is turned on / off when the tip of each piston 10, 50, 70a, 70b passes near the attachment position. These proximity switches are incorporated as a part of a control electric circuit provided in the control unit 80, and are connected to the control unit 80 by an electric signal line (not shown). A power supply line 130 for operating the drilling machine 30, the five solenoid valves, a plurality of relay switches and a timer relay switch are incorporated in the control electric circuit in the control unit 80. And by turning on / off the proximity switch,
A plurality of relay switches and a timer relay switch are sequentially operated, and sequence control described later is performed.

Now, the operation of the taper hole drilling machine 1 of the present embodiment having the above construction will be described with reference to FIGS. In the taper hole drilling machine 1, each unit is controlled by the control unit 80, and taper hole drilling is repeatedly executed as follows. Here, for convenience of explanation, a description will be made from a state in which the taper hole processing on the vinyl chloride plate 100 is completed and only one of the lowermost layers of the vinyl chloride plate 100 at the processing position 104 is pushed back to the standby position 102. First, compressed air is supplied from the compressed air tubes 171a and 171b to the extraction cylinders 70a and 70b, whereby the pistons 73a and 73b move forward. As a result, the unprocessed vinyl chloride plates 100 stacked at the supply position 101 are pushed out to the standby position 102 by the extraction plate 64. At the same time, compressed air is supplied to the push-up cylinder 20 from the compressed air tube 121, the piston 23 rises, and one end of the vinyl chloride plates 102 stacked at the standby position is pushed up diagonally. As a result, the vinyl chloride plate 1 extruded on the extraction plate 64
00 enters the lowermost layer of the standby position 102. Piston 23
Immediately push up the compressed air tube 1 to the cylinder 20.
Compressed air is supplied from 22 and descends.

Next, compressed air is supplied from the compressed air tube 111 to the pushing cylinder 10, and the piston 13
The push-out plate 15 advances integrally with. As a result, one of the lowermost layers of the vinyl chloride plates 100 stacked at the standby position 102 is pushed to the processing position 104. At this time, the second vinyl chloride plate from the bottom also moves forward until it comes into contact with the tip of the push-back member 55. The piston 13 is the pushing plate 1
Along with 5, stand by in the pushing position.
Then, compressed air is supplied from the compressed air tube 142 to the tapered hole processing cylinder 40, the piston 43 descends, and the drill vertical lever 32 of the drilling machine 30 rotates downward together with the piston 43. As a result, the spindle 34 including the drill chuck 36 and the tapered blade drill 38
The whole goes down. At the same time, the control unit 80 is operated to supply electric power to the power supply line 130, and the motor mechanism (not shown) of the drilling machine 30 is operated to rotate the main shaft 34. As a result, the tapered hole drilling blade 38 also descends while rotating integrally with the main shaft 34. Then, the tapered hole drilling blade 38 is brought into contact with the vinyl chloride plate 100 located above at the processing position 104 to perform the tapered hole processing.

At the time of this taper hole processing, as shown in FIG. 3C, the vinyl chloride plate 10 to be taper hole processed.
Since 0b is always supported by the bottom unprocessed vinyl chloride plate 100a, the taper hole 108 is not deformed even in the final stage of taper hole processing. On the other hand, the lowermost vinyl chloride plate 100a is provided with a drill hole 3 having a punched taper hole.
The tip of 8 drills a hole 106 that is smaller than the required tapered hole 108. Here, as shown in FIG. 3 (C), the lowermost vinyl chloride plate 100a has a smaller length S than the vinyl chloride plate 100b due to the extrusion plate 15.
It is extruded excessively so that it is located only to the right. The lowermost vinyl chloride plate 100a is shown in FIG.
By the series of steps (D), (E), (A), and (B), the vinyl chloride plate 100b will be positioned at the uppermost position and tapered holes will be formed next time. At this time,
As shown in FIG. 3B, the small hole 106 formed in the step (C) is used for the tapered hole drilling blade 38.
The position is deviated from the center line 38c by a minute length S.

Accordingly, when the tapered hole drilling blade 38 descends and comes into contact with the vinyl chloride plate 100b, the tip of the tapered hole drilling blade 38 fits into the small hole 106, so that the vinyl chloride plate 100b moves to the right. Is pushed to. As a result, the vinyl chloride plate 100b is pressed against the tip of the push-back member 55. As a result, there is an advantage that the position of the opened tapered hole is always accurately positioned at a constant distance from the right end of the vinyl chloride plate 100b in the figure with reference to the tip of the push-back member 55.
In particular, when a plastic plate made of vinyl chloride or the like is drilled, chips adhere to the surface of the plastic plate, but in this embodiment, such fine chips adhere to the right end surface of the vinyl chloride plate 100b in the figure. However, due to the above-mentioned pressing effect, a tapered hole can be drilled at an accurate position.

When the taper hole processing is completed to a predetermined depth, as shown in FIG.
The lower end surface of the abuts on the surface of the vinyl chloride plate 100b. As a result, the lowering of the tapered hole drilling blade 38 is stopped, and when a certain time elapses at this position, the control unit 8
By the function of the timer relay switch installed in the 0, the compressed air tube 14
Compressed air is supplied from 1. As a result, the piston 43 rises and pushes up the drill up / down lever 32, and the taper hole drill bit 38 rises apart from the vinyl chloride plate 100. Then, compressed air is supplied from the compressed air tube 151 to the push-back cylinder 50, and as shown in FIG. 3D, the push-back member 5 is integrated with the piston 53.
5 moves forward. As a result, the upper vinyl chloride plate 100b for which the tapered hole processing has been completed is pushed back from the processing position 104 to the standby position 102.

At this time, as described above, the lowermost vinyl chloride plate 100a is excessively pushed back as shown in FIG. 3 (E). As a result, the lowermost vinyl chloride plate 100a is separated from the tip of the push-back member 55, and the vinyl chloride plate 102a is smoothly pushed up without being caught by the push-back member 55 at the time of the next push-up. By repeating the above series of steps, the vinyl chloride plate 100
The setting, taper hole drilling, and removal are repeated in order, and taper hole drilling is automatically performed. Further, the processed vinyl chloride plate 102 at the standby position automatically moves upward by the unprocessed vinyl chloride plates 100 successively entering the lower layer of the standby position 102, so that a special take-out mechanism is provided. It can be taken out reliably without need.

As described above, in the above series of steps, the pushing air cylinder 10 is used to set the standby position 10
The second lowest vinyl chloride plate 100 is sent to the processing position 104, and the second vinyl chloride plate 100 from the bottom is pushed back by the push-back air cylinder 50. At the same time, new vinyl chloride plates 100 are put into the lowermost layer of the standby position 102 one by one by the air cylinders 70a and 70b for extraction. This results in the addition of the flexible plate material 100 to the processing position 104 and the processing position 1
The flexible plate material 100 is being extracted from 04. Therefore, the pushing air cylinder 10, the pushing plate 15, the pushing air cylinder 20, the pulling air cylinders 70a and 70b, and the pulling plate 64 are opposite to the advancing / retreating side of the tapered hole working blade 38 of the flexible plate material 104 at the working position. A plate material adding unit that adds one flexible plate material 100 to the side is configured. Also, the push-back air cylinder 5
The 0 and the push-back member 55 function as a plate material extracting unit that extracts one flexible plate material 100 on the advancing and retracting side of the tapered hole machining blade 38 from the flexible plate material 104 stacked at the processing position.

Second Embodiment Next, a second embodiment embodying the present invention will be described with reference to FIGS.
And it demonstrates with reference to FIG. The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In the taper hole drilling machine of this embodiment, as shown in FIG.
Instead of the extrusion plate 15 of the first embodiment, the extrusion plate 315
Is provided. This push plate 315 is the same as that of the first embodiment.
It is fixed to the tip of the piston 13 of the push-out air cylinder 10 provided in the same manner as in. The push plate 315 is
As shown in FIG. 4, it is a plastic plate having a thickness of about 1.5 vinyl chloride plates 100 and made of the same vinyl chloride resin. Then, of the vinyl chloride plates 100 stacked at the standby position 102, the lowermost two sheets 102a, 102
It works to push out only 2b. Further, as shown in FIG. 4, a pair of stopper plates 317a and 317b are provided on the left and right of the vinyl chloride plate 100 stacked at the standby position. The stopper plates 317a and 317b are
When the vinyl chloride plates 102a and 102b are moved left and right in a series of steps, the laminated vinyl chloride plates 102c, which are finished after the processing of the tapered holes, are supported so as not to move left and right.

Further, in this embodiment, as shown in FIG. 4, the push-back member 55 of the first embodiment is replaced with a vinyl chloride plate 100 having a thickness of about 1.5 sheets and having the same vinyl chloride resin. A push-back plate 355 made of metal is provided. The push-back plate 355 has a rear end mounting portion 355a.
Push-back air cylinder 50 provided in the same manner as in the first embodiment
A bolt 354 is screwed and fixed to the tip of the piston 53. Then, as the piston 53 moves forward and backward, the push-back plate 355 slides integrally on the surface plate 8 and moves forward and backward in the left-right direction in FIG. When the push-back plate 355 moves to the left in FIG. 4, the two vinyl chloride plates at the processing position are pushed back to the standby position where they abut the tip of the push-out plate 315 (102a and 102 in FIG. 4A).
b). Here, the piston 53 further advances as shown in FIG. 4 (B), and the vinyl chloride plates 102a and 102b further move to the left. At this time, the pushing plate 315 moves leftward together with the piston 13 of the air cylinder 10. After that, the push-back plate 355 is returned to the position shown in FIG. In this way, a gap is created between the tip of the push-back plate 355 and the two vinyl chloride plates 102a and 102b, and when the vinyl chloride plate is pushed up in the next step, it is caught on the tip of the push-back plate 355. Is prevented. The configuration of the other parts of the taper hole drilling machine 301 is the same as that of the taper hole drilling machine 1 of the first embodiment.

Now, in the taper hole drilling machine of the present embodiment having the above configuration, the taper hole drilling is executed as follows under the control of the sequence control means 80. First, the pistons 73a and 73b move forward to move to the supply position 101
The raw vinyl chloride plates stacked on top of each other are extruded by the extraction plate 64 to the standby position 102. At the same time, the piston 23 rises and the vinyl chloride plate 10 in the standby position
One end of 2 is pushed up diagonally, and the vinyl chloride plate extruded by the extraction plate 64 enters the lowermost layer of the standby position 102. The piston 23 immediately descends. Next, the pushing plate 315 moves forward integrally with the piston 13, and only the two lowermost layers of the vinyl chloride plates laminated at the standby position 102 are pushed to the processing position 104. After that, the piston 13 retracts to the original position together with the pushing plate 315. Then, the tapered hole drilling blade 38 descends while rotating integrally with the main shaft 34, and the tapered hole drilling blade 38
Comes into contact with the upper vinyl chloride plate to form a tapered hole. At this time, since the upper vinyl chloride plate is supported from below by the unprocessed vinyl chloride plate, the taper hole is not deformed even at the final stage of taper hole processing. After the processing of the tapered hole is completed, the push-back plate 355 moves forward, and the two vinyl chloride plates 100 are pushed back from the processing position 104 to the standby position 102.

As described above, in the series of steps of this embodiment, the standby position 1 is set by the pushing air cylinder 10.
Two vinyl chloride plates 100 in the bottom layer of 02 are processing position 1
04, and is pushed back by the push-back air cylinder 50. At the same time, new vinyl chloride plates 100 are put into the lowermost layer of the standby position 102 one by one by the air cylinders 70a and 70b for extraction. As a result, the flexible plate material 10 to the processing position 104 is consequently obtained.
Flexible plate material 100 from 0 addition and machining position 104
Is being removed. Therefore, the pushing air cylinder 10, the pushing plate 315, the pushing air cylinder 20, the pushing back air cylinder 50, and the pushing back plate 35.
5, the extraction air cylinders 70a and 70b and the extraction plate 64 constitute a plate material adding means for adding one flexible plate material 100 to the opposite side of the flexible plate material 104 at the processing position where the tapered hole machining blade 38 advances and retracts. At the same time, from the flexible plate material 104 stacked at the processing position to the tapered hole processing blade 3
It also functions as a plate material extracting means for extracting one flexible plate material 100 on the side of advance and retreat of 8.

In each of the above-described embodiments, the case where the vinyl chloride resin plate is used as the flexible plate material and the tapered hole is processed, but other flexible plate materials can be processed in the same manner. Further, although an air cylinder operated by compressed air is used as an actuator constituting the taper hole processing means, the plate material adding means, and the plate material removing means, other actuators or the like can be used. It goes without saying that the sequence control means may be performed by another method such as control using a computer system other than the control using the electric relay switch as in each of the above embodiments. Further, in the second embodiment, the processing position 104
Although the example in which the number of the vinyl chloride plates 100 sent out to two is two has been described, the number may be any number as long as it is two or more. In particular, depending on the shape of the tapered hole, the length through which the drill blade for tapered hole processing penetrates increases,
In some cases, it is preferable to use three or more sheets. The drilling machine as the taper hole processing means is not limited to the one in which the drill hole for the taper hole processing vertically faces downward as in each of the above-described embodiments, and the processing is performed upward or in the horizontal direction, and further in the diagonal direction. The structure does not matter. The structure, shape, size, material, number, arrangement, etc. of the other parts of the taper hole drilling machine are not limited to those in the above embodiment.

Further, as an effect peculiar to each of the above-described embodiments, the pushing plate 1 which directly contacts the vinyl chloride plate 100.
5,315, the push-back plate 355, and the extraction plate 64 are made of the same vinyl chloride resin as the vinyl chloride plate 100,
Because it is hard to scratch the vinyl chloride plate 100 and is light,
The advantage is that it can be moved with a small force. Further, as an effect peculiar to Example 1, the lowermost vinyl chloride plate 100 is used.
A small hole 10 is formed by pushing a.
The position 6 is slightly displaced, and the advantage is obtained that the hole 6 is pressed against the push-back member 55 at the time of drilling the taper hole and the taper hole is drilled at an accurate position.

[0039]

According to the present invention, since a taper hole machining machine for laminating a plurality of flexible plate materials at the machining position to perform the taper hole machining is created, it is possible to perform a hole machining once for each of the plastic plate etc. The taper hole can be accurately drilled in the flexible plate material. With this, it is possible to efficiently perform the taper hole processing of many flexible plate materials with a simple device,
It is a low-cost and extremely practical taper hole drilling machine.

[Brief description of drawings]

FIG. 1 is a plan view and a side view showing a first embodiment of a taper hole drilling machine of the present invention.

FIG. 2 is a perspective view showing a first embodiment of a taper hole drilling machine.

FIG. 3 is an explanatory view showing a push-back means of the first embodiment of the taper hole machining machine.

FIG. 4 is an explanatory view showing a push-back means of Embodiment 2 of the taper hole machining machine.

FIG. 5 is an explanatory view showing a conventional method of processing a tapered hole.

[Explanation of symbols]

1 Taper Hole Machining Machine 10, 15, 20, 64, 70a, 70b Plate Material Adding Means 50, 55 Plate Material Removing Means 30, 40 Tapered Hole Machining Means 38 Tapered Hole Machining Blades 80 Sequence Control Means 100 Flexible Plate Materials 104 Machining Positions

Claims (1)

[Claims] 1. A taper hole drilling machine for punching a tapered hole in a flexible plate material such as a plastic plate, the direction being substantially perpendicular to one surface of the flexible plate material with respect to the flexible plate material laminated at a processing position. Taper hole machining means having a tapered hole machining blade that advances and retreats to, a plate material adding means that adds one flexible plate material to the opposite side of the taper hole machining blade advancing and retracting side of the flexible plate material at the machining position, and The plate material extracting means for extracting one flexible plate material on the advancing and retracting side of the tapered hole processing blade from the flexible plate material laminated at the processing position, the taper hole processing means, the plate material adding means and the plate material extracting means as follows. Procedure, that is, (1) add a piece of flexible plate material to the side opposite to the advancing / retreating side of the tapered hole processing blade of the flexible plate material placed at the processing position by operating the plate material adding means, (2) The taper By operating the processing means, the tapered hole processing blade is advanced and retracted with respect to the flexible plate material laminated at the processing position to perform the taper hole processing, (3) The plate material extracting means is operated to stack at the processing position. Taper hole machining machine having a sequence control means for extracting one flexible plate material on the advancing / retreating side of the tapered hole machining blade from the prepared flexible plate material and repeatedly operating according to a procedure.