JPH0541706U - Automatic plane - Google Patents

Abstract

(57) [Summary] [Purpose] An object of the present invention is to provide an automatic plane which reduces the work load associated with the reset operation and improves the work efficiency of cutting work. [Construction] A processed material 30 is inserted into a material feeding path 2S between the head portion 4 and the material feeding table 2, and a working surface 32 is cut by a plane 10 inside the head portion 4. This processing surface 32
If the unevenness of the plane is remarkable and the plane is overloaded, the plane is automatically stopped. At this time, in the present invention, the control circuit is reset only by raising the head portion 4 by the foot switch 28. Therefore, the cutting operation can be resumed by continuously lowering the head portion 4 without pressing the reset button or the like.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a reset structure for an automatic plane, and more particularly to a structure for efficiently performing a reset operation.

[0002]

[Prior Art]

 A schematic of a conventional automatic plane is shown in FIG. A head portion 71 is located above the material feeding table 70, and a material feeding path 2S is formed between the two. The processed material 30 placed on the material feeding table 70 is inserted into the material feeding path 2S in the direction of arrow 90. The processed material 30 is inserted and moved by a belt mechanism or the like (not shown) driven by a feed motor.

On the other hand, inside the head portion 71, a plane 10 having a plane blade is provided. Then, the plane body 10 is driven to rotate by a plane motor or the like according to the insertion of the machined material 30, and the machined surface 32 of the machined material 30 is cut. In this way, the processed material 30 is processed to have a predetermined thickness. The head portion 71 is supported by a column 73, and can be freely moved in the directions of arrows 92 and 93 by a driving means (not shown).

A specific procedure of the work of cutting the processed material using this conventional automatic plane will be described below. First, before performing the cutting operation of the processed material 30, the head portion 71 is raised in the direction of the arrow 93 in advance to secure a wide material feeding path 2S. Next, the tip 39 of the processed material 30 is positioned directly below the head end 79 of the head 71. From this state, the descent of the head portion 71 (direction of arrow 92) is started. Then, as the head portion 71 descends, the head end portion 79 comes into contact with the tip end portion 39 of the processed material 30.

Here, the head end 79 has a built-in hit detector (not shown), and detects contact with the tip 39 of the processed material 30. By this detection, the lowering of the head portion 71 is stopped, and the feed motor of the belt mechanism and the plane motor of the plane body 10 start driving. That is, the processed material 30 is fed in the direction of the arrow 90, and the cutting work by the plane cylinder 10 is started.

By the way, the cutting range of the plane 10 built in the head portion 71 has a certain limit. That is, when the unevenness of the machined surface 32 is remarkable and the cutting ability of the plane cylinder 10 is exceeded, the plane cylinder 10 becomes uncuttable and its rotation is stopped. In such a non-rotatable state, the plane motor of the plane body 10 or the feed motor for feeding and moving the processed material 30 is overloaded, which causes burnout or damage to the drive belt.

Therefore, such an overload of the motor is detected by a predetermined detection circuit, and the driving of the plane motor and the feed motor is immediately stopped. When the motor is stopped due to overload, first, the head portion 71 is temporarily moved up in the direction of arrow 93. However, after this, in order to restart the cutting work, it is necessary to press the reset button on the operation panel 75. The reset button is provided to prevent the motor drive operation from being performed again in an overloaded state due to a malfunction. After the reset operation, the head portion 71 is lowered in the direction of arrow 92, and the cutting work is started again.

[0008]

[Problems to be solved by the device]

 The above-mentioned conventional automatic plane has the following problems. After the motor has stopped driving due to overloading the plane, it is necessary to press the reset button to restart the cutting work. Therefore, there was a problem that the work efficiency could not be resumed immediately and the work efficiency would be reduced. In particular, when the operation of raising and lowering the head portion 71 to the arrows 92 and 93 is performed by, for example, a foot switch or the like and the control is performed at a position apart from the operation panel 75, much more labor is required. That is, the button on the operation panel 75 should be pressed only for the reset operation.

Therefore, the present invention aims to provide an automatic plane which reduces the work load associated with the reset operation and improves the work efficiency of the cutting work.

[0010]

[Means for Solving the Problems]

 The automatic plane according to the present invention includes a mounting table on which an object to be machined is placed, an insertion space for inserting the object to be machined between the table and the machine, and a machining surface of the object to be machined. A cutting machine having a plane for cutting a cutting machine, which is driven by the operation of the cutting machine drive section, and a feed mechanism for inserting a workpiece into an insertion space and feeding it. A feed mechanism driven by operation, when the plane of the cutting machine is overloaded due to the movement of the workpiece to be machined, the cutting machine drive section operates, or the cutting machine drive section and the feed mechanism drive Both operation of the parts are stopped, and the operation is maintained as long as the reset signal is not input.When the operation stop part or the insertion space expansion signal is input, the mounting table is lowered or the cutting machine is raised. By said insertion When an insertion space expansion signal is output in an automatic plane including an insertion space expansion unit that increases the space, a reset signal is output to the operation stop unit together with the insertion space expansion signal, and the cutting machine drive It is characterized in that the operation of the section or the operations of both the cutting machine drive section and the feed mechanism drive section can be restarted.

[0011]

[Action]

 In the automatic plane according to the present invention, when the insertion space expansion signal is output to the insertion space expansion unit, the reset signal is output to the operation stop unit together with the insertion space expansion signal. Then, the operation of the cutting machine drive unit or both of the cutting machine drive unit and the feed mechanism drive unit can be restarted.

Therefore, only by performing the output operation of the insertion space extension signal, the reset signal is also output, and it becomes unnecessary to separately perform the output operation of the reset signal.

[0013]

【Example】

 An embodiment of an automatic plane according to the present invention will be described with reference to the drawings. First, FIG. 1B shows a schematic view of an automatic plane in this embodiment. A head portion 4 as a cutting machine is located above the material feeding table 2 which is a mounting table, and a material feeding path 2S is formed between the head portion 4 and the table surface 29 of the material feeding table 2. The material feeding path 2S is an insertion space into which the processed material 30 is inserted. Auxiliary tables 60 and 61 are connected to the material feeding table 2.

The head portion 4 is pivotally supported by a plane body 10 which is a plane portion provided with a plane blade 19. The plane 32 of the machined material 30 is cut by rotationally driving the plane body 10. The head portion 4 is supported by a support column 45, and the other end of the support column 45 is fixed to the elevation transmission plate 22 located inside the material feeding table 2. The elevating screw 21 penetrates through the elevating and lowering transmission plate 22, and the elevating and lowering transmitting plate 22 is moved up and down according to the forward and reverse rotation of the elevating and lowering screw 21.

The lifting screw 21 is rotated by a lifting motor 24 in the material feeding table 2. The elevating motor 24 is controlled to rotate in the normal and reverse directions by depressing the down switch F1 or the up switch F2 of the foot switch 28 shown in the figure. That is, by selecting the lowering switch F1 or the raising switch F2, the head portion 4 can be freely adjusted up and down through the rotation of the lifting screw 21.

FIG. 1A shows a plan view of the head unit 4. The plane 10 is rotated by a plane motor 12 as a cutting machine driving unit, and this drive is transmitted by a plane belt Q1. Further, the material feeding motor 14 which is the feeding mechanism driving portion rotates the material feeding rollers 16 and 18 via the material feeding belt Q2. The material feeding rollers 16 and 18 are rollers for feeding and moving the processed material 30 inserted in the material feeding path 2S. A detection roller 41 is provided in the head portion 4 at the tip end on the side where the processed material 30 is inserted.

Next, a specific operation procedure for cutting the processed material 30 will be described. First, the processed material 30 is placed on the auxiliary table 60 connected to the material feeding table 2. The auxiliary table 60 is provided with a conveyance roller (not shown), and conveys the processed material 30 in the direction of arrow 90. Similarly, the auxiliary table 61 connected to the other side of the material feeding table 2 is also provided with a conveying roller.

The processed material 30 is guided onto the table surface 29 of the material feeding table 2 by the transport mechanism of the auxiliary table 60. At this time, the head portion 4 is located relatively above, and a sufficient material feeding path 2S for inserting the processed material 30 is secured. Here, a control circuit diagram of this automatic plane is shown in FIG. 2, and the subsequent operation will be described based on the control circuit.

After the tip portion 39 of the processed material 30 is positioned directly below the detection roller 41 built in the head portion 4, the down switch F1 (see FIG. 1B) of the foot switch 28 is stepped on. By this operation, the down switch F1 shown in FIG. 2 is closed, and the H level is given to one of the AND circuits 52 via the knot circuit N1. In this case, since the rising switch F2 is in the open state, the H level is also applied to the other side of the AND circuit 52. In this way, the down signal (H level) is output from the AND circuit 52 and applied to the relay coil R1 through the driver D1. When the descending signal is given to the relay coil R1, the elevating motor 24 shown in FIG. 1 is driven to start descending the head unit 4 in the direction of arrow 92.

When the head unit 4 starts descending, the detection roller 41 in the head unit 4 comes into contact with the tip portion 39 of the processed material 30 in due course. The detection roller 41 detects this contact, first opens the lowering switch F1 to stop the lowering of the head unit 4, and at the same time closes the operation switch X1. The operation switch X1 is a switch for starting the operation of the plane-barrel motor 12 and the material feeding motor 14. When the operation switch X1 is turned on, the H level is input to the set input of the RS flip-flop 51 through the knot circuit N3. Then, an operation signal (H level) is output from the Q output of the RS flip-flop 51 toward the relay coil R 3 and the inverter 50. The circuit of the detection roller is not shown in FIG.

When an operation signal is given to the relay coil R3, the plane switches Y1 and Y2 are closed, and the plane motor 12 starts to operate. On the other hand, when the operation signal is given to the inverter 50, the material feeding motor 14 starts to operate. As described above, when the detection roller 41 (FIG. 1B) detects the tip end portion 39 of the processed material 30, the head portion 4 is automatically stopped from descending in the direction of the arrow 92 and positioned, and at the same time, The cylinder motor 12 and the material feeding motor 14 are activated to start cutting of the machined surface 32.

Here, the plane blade 19 of the plane body 10 has a certain cutting limit, and when the irregularities of the machined surface 32 are significant, the plane cannot be cut. In such a case, the cutting motor 12 and the material feeding motor 14 are overloaded, and there is a risk of burning or the like if left unattended. Therefore, in this embodiment, the inverter 50 detects an increase in current value due to overload of the material feeding motor 14 and outputs a trip signal (H level).

The trip signal output from the inverter 50 is taken into the reset input of the RS flip-flop 51 via the OR circuit 55. When an H level trip signal is given to the reset input of the RS flip-flop 51, a stop signal (L level) is output from the Q output. This output is given to the relay coil R3 and the inverter 50, respectively, and the plane-tooth car motor 12 and the material feeding motor 14 stop their operations. In this way, when the plane body 10 becomes uncuttable, the cutting operation is automatically interrupted. The stop switch X2 is turned on when the contact between the detection roller 41 and the tip 39 of the processed material 30 is released, and stops the operation of the plane motor 12 and the material feeding motor 14.

When the motor drive is automatically interrupted due to an overload, for safety of cutting work, unless the reset signal (H level) is given to the inverter 50, the plane body motor 12 and the material feeding motor 14 are The drive cannot be restarted. That is, the trip signal output is maintained at the reset input of the RS flip-flop 51 until the reset signal is input to the inverter 50. Since the reset input is prioritized over the set input in this RS flip-flop 51, even if the H level is input to the set input during this period, the Q output is in the L level state, and 12 and the feeding motor 14 do not operate.

When the cutting operation is interrupted as described above, the raising switch F2 of the foot switch 28 is stepped on and the head portion 4 is temporarily raised in the direction of arrow 93 (see FIG. 1B). Here, in the present embodiment, the stepping operation of the raising switch F2 simultaneously gives a reset signal to the inverter 50, and the plane cylinder motor 12 and the material feeding motor 14 become operable. This circuit configuration will be described in detail below.

The stepping operation of the foot switch 28 closes the raising switch F2 shown in FIG. 2, and the H level is applied to one of the AND circuits 53 via the knot circuit N2. At this time, since the down switch F1 is open, the H level is also given to the other side of the AND circuit 53. As a result, the AND circuit 53 outputs the H level to the relay coil R2 through the driver D2, the elevating motor 24 is driven, and the head unit 4 moves up in the direction of arrow 93 (see FIG. 1B).

In FIG. 2, when the closing operation of the raising switch F2 is performed, the H level via the knot circuit N2 is given to the AND circuit 53 and also to one input portion of the AND circuit 54. Here, as described above, the trip signal (H level) is output from the inverter 50, and this trip signal is taken into the OR circuit 55, and at the same time, the other input portion of the AND circuit 54 has already been input. Is also given to. Therefore, the reset signal (H level) is output from the AND circuit 54 to the inverter 50. Then, the trip signal is released (becomes L level) by this, and the plane cylinder motor 12 and the material feeding motor 14 become operable.

After depressing the raising switch F2 of the foot switch 28 in this manner, the depressing switch F1 is subsequently depressed. As a result, the lowering switch F1 of FIG. 2 is closed, the H level is applied to the relay coil R1, and the head unit 4 begins to move down in the direction of arrow 92 (FIG. 1B). As the head part 4 descends, the contact of the work material 30 with the work surface 32 is detected by the detection roller 41 in the head part 4, as in the start of the cutting operation described above. Then, the operation switch X1 is closed based on the detection of the detection roller, and the H level is input to the set input of the RS flip-flop 51.

At this time, the trip signal to the RS flip-flop 51 is already released by the stepping operation of the up switch F2, and the reset input is in the L level state. Therefore, an operation signal (H level) is output from the Q output by the H level input to the set input section. In this way, the plane motor 12 and the material feeding motor 14 start to operate again, and the cutting operation is restarted.

As described above, even when the plane barrel 10 is in the uncuttable state, the work can be restarted only by stepping on the up switch F2 and the down switch F1 of the foot switch 28. That is, for example, it is not necessary to press the reset switch provided on the operation panel 25 (FIG. 1B), and it is possible to perform the stepping operation at the place where the foot switch 28 is placed and restart the cutting work. ..

In the present embodiment, the head part 4 is moved up and down to adjust the height of the material feeding path 2S. However, the table surface 29 of the material feeding table 2 is made movable, and the table surface 29 is made movable. May be controlled up and down. Further, in order to realize the operation of the automatic plane, the circuit shown in FIG. 2 is used in this embodiment, but a CPU may be used instead.

[0032]

[Effect of the device]

 In the automatic plane according to the present invention, only the output operation of the insertion space expansion signal is output together with the reset signal, and it is not necessary to separately perform the output operation of the reset signal. Therefore, the work load associated with the reset operation is reduced, and the work efficiency of the cutting work can be improved.

[Brief description of drawings]

FIG. 1 is an external view schematically showing an embodiment of an automatic plane according to the present invention, in which A is a side view of a head portion and B is an overall side view.

FIG. 2 is a circuit diagram showing the main circuit configuration of the automatic plane shown in FIG.

FIG. 3 is a side view showing an outline of a conventional automatic plane.

[Explanation of symbols]

 2 ... Feeding table 2S ... Feeding path 4 ... Head section 10 ... Planer 12 ... Plane motor 14 ... Feeding Material motor 16 ・ ・ ・ Feeding roller 18 ・ ・ ・ Feeding roller 30 ・ ・ ・ Processed material

Claims (1)

[Scope of utility model registration request] Claims: 1. A mounting table on which a processing target is mounted, and a plane which is positioned so as to form an insertion space into which the processing target is inserted and which cuts a processing surface of the processing target. A cutting machine having a cutting part, which is driven by the operation of the cutting machine drive part, and a feed mechanism which inserts a workpiece into an insertion space and feeds it, and a feed mechanism driven by the operation of the feed mechanism drive part. When an overload occurs in the plane part of the cutting machine due to the mechanism and the feeding movement of the workpiece, the operation of the cutting machine drive part or the operation of both the cutting machine drive part and the feed mechanism drive part An operation stop part that stops and keeps the operation stopped unless a reset signal is input.When an insertion space expansion signal is input, the mounting table is lowered or the cutting board is raised to widen the insertion space. Sky In an automatic plane including an expansion part, when an insertion space expansion signal is output, a reset signal is output toward the operation stop part together with the insertion space expansion signal, and the operation of the cutting machine drive part or the An automatic plane that is characterized in that the operations of both the cutting machine drive section and the feed mechanism drive section are resumable.