JPS6221490A - Clamping device for sheet material - Google Patents

Abstract

PURPOSE:To upgrade automatic control by providing a freely movable carriage to a carriage base having the length approximately equal to the working width of a machine, further disposing plural clamps to the carriage and releasing and fixing the clamps from and to the carriage base. CONSTITUTION:The carriage base 9 having the length approximately equal to the working width is provided atop a slide table 5 of the machine at one end thereof and the carriage 19 having the length about 1/2 the length thereof is disposed thereon in such a manner that the carriage can move freely in the X-axis direction. A dovetail tenon 21 is provided to the working part side of the carriage 19 and dovetail grooves 23 are disposed to the plural clamps CLP1, CLP2. Opening mechanisms 7 are provided to the respective clamps so that the clamps can be fixed to or released from the carriage base 9 by means of actuators. The need for providing the servocontrol mechanism to be exclusively used is eliminated and the automatic control of the plural clamping devices is executed by such mechanism. The automatic control is thus upgraded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a plate material clamping device that can be used in plate processing machines, such as turret 1 punch press machines, shearing machines, laser processing T11 machines, etc. .

[Description of the prior art 1 A plate material clamping device generally includes a carriage that moves in the processing width direction and a suitable number of clamps attached to this key 1ν carriage, and the plate material gripped by the clamps is moved into the machine. The plate material is moved in the front and rear and left and right directions to provide a predetermined position of the plate material to the processing section of the processing machine.

Two methods for positioning the clamp on the carriage have been proposed and put into practical use.

The first example is manual. First, when positioning and covering the clamps on the carriage, this work is all done manually, and an appropriate number of clamps are manually positioned at appropriate positions on the carriage depending on the width of the plate material, etc. It turns out.

The second example is automatic J:. This is done by attaching an appropriate number of clamps to the main 11 rods and controlling the position of each clamp relative to the carriage according to the width of the plate material via the clamp servo mechanism. This is done automatically by the clamp servo mechanism.

However, in the case of the manual method according to the first example, manual operations are troublesome, and changing the clamp position not only takes time and effort, but also requires manual operations, so it is not possible to automate the machining line. It is also a hindrance.

Further, in the automatic type according to the second example, a servo mechanism for clamping is required, which complicates the machine and the control device and increases the cost of the machine.

[Object of the Invention] Based on the above-mentioned prior art, the present invention provides a plate material clamping device that can automatically position the clamps on a carriage without the need for a dedicated servo mechanism for a suitable number of clamps. With the goal.

[Summary of the Invention] In order to achieve the above object, the present invention includes a gear ridge base with a length approximately equal to the processing width of a plate processing machine, and a
- a carriage driven by a bow mechanism and movably mounted on the two lV ridge bases, which can be fixed to and released from the carriage, and which is also fixed to the carriage base in response to the fixing and releasing action; A suitable number of clamps are attached to the carriage through a fixing/releasing mechanism that can be attached to the carriage, and the clamps are fixed to or released from the carriage or the carriage base, and the carriage is moved to a predetermined position. A plate material clamping device includes a carriage and a control circuit for controlling the position of the clamp to an appropriate position, and the mounting position of the clamp can be determined in a self-directed manner.

[Explanation of Examples] Examples of the present invention will be described in detail below.

FIG. 1 is a front view showing an example of a plate processing machine, FIG. 2 is an enlarged perspective view of a plate clamping device, and FIG. 3 is a further enlarged sectional view showing the structure of the plate clamping device.

As shown in FIG. 1, the plate material processing mechanism MC has a plate material clamping device 1, which grips a plate material W, and provides a predetermined position of the plate material W to the processing section MP. is being processed.

In addition, reference numeral W1-1 indicates a work holding device.

As shown in FIG. 2, the processing machine MC has a horizontal base 3 along the plate material supply direction (hereinafter referred to as the Y-axis direction).
is provided. Then, on both sides of the base 3, the base 3
A slide table 5, which is movable in the Y-axis direction with its top surface aligned with the slide table 5, is supported by guide rails 7 attached to the lower surfaces of both sides of the base 30.

As shown in detail in FIG. 3, a carriage base 9 having a predetermined height in the X-axis direction perpendicular to the Y-axis is fixed to one end of the slide table F5.

Then, the processing section side 1 of the Killeridge base 9. = is provided with a shaft support member 11, and the member 11 is equipped with a servo motor M.
A ball screw 13 rotatably driven by X is rotatably supported. y1 On the processing section side of the carriage base 9.
On the other hand, the guide rail 15 and the lower guide rail 17
It is provided along the axial direction. The upper guide rail 15 is provided with a guide member 15a that protrudes downward and a single-shaped member 15b that protrudes toward the processing section (
In FIG. 2, the guide member 15a is omitted).

The lower guide rail 17 is attached to the carriage base 9.
A carriage 19 having a length approximately 1/2 of the carriage base 9 is provided so as to be movable in the X-axis direction via a guide member 15a of the upper guide rail 15. The carriage 19 is different from the guide member 15a.
They are joined via a roller R that is rotatably provided on the 9 side and rotatably movable along the guide member 15a. The carriage 19 has a nut member (not shown) that is screwed into the ball screw 13, and by rotating the ball screw 13 in the forward and reverse directions, the It is movable in the opposite (10-) direction.

A dovetail 21 is provided on the processing portion side of the key 17 and ridge 19. So, 211! il clamp CI-P
1. Provide a dovetail groove 23 on the opposite side of the processing part side of CI-P2,
This dovetail groove 23 is fitted into the moth 21, and each clamp CLP
1, C1P2 is movable along the carriage 19. Further, on the processing section side of the clamps CLP1 and CTO1)2, gripping claws 23a which are opened and closed by the operation of an actuator (not shown) are provided so as to match the height of the plate material W.

The clamps CL P 1 and CI P 2 are provided with the fixing/release mechanism 7 . The fixation/release mechanism is
Clamp carriage fixed type 2 installed on the clamp side
5, the air cylinder device 27, the T-shaped member 15b and the holding member 27 (I), which is fixed to the cylinder device and holds the tip 15c of the front T-shaped member 15b, and the toggle link 2;
It consists of 9. The air cylinder device M27 is of a double-shaft type, and the piston 2 reciprocates in the Y-axis direction.
A rod 27h and a rod 27c are provided at both ends of 7a. One end of the rod 27h on the processing section side and the upper end of the individual claw 25 are connected via the toggle link 29. Further, the rod 27c on the side opposite to the Ill side is arranged so as to approach and move away from the tip 15c of the single-shaped portion.

Therefore, when the piston 27a is operated toward the processing section (leftward in FIG.
is pressed downward, the fixing mold 25 comes into contact with the dovetail 21, and the clamps CLP1 and ClF3 are moved to the carriage 19.
It becomes stuck to. At this time, the rod 27c on the opposite side to the processing section side is also moved toward the processing section side, and as shown in FIG. , ClF3 are in a released state with respect to the carriage base 9.

In this way, when the piston 27a is operated toward the processing section, the clamps CLPI and ClF3 are moved to the carriage 19.
It is movable in the X-axis direction along with a carriage 19 fixed to. Note that the clamp (”:IP
1, the state in which ClF3 is fixed to the carriage 19 is
This will be referred to as [clamp fixed state-1].

On the other hand, when the piston 27a is operated to the side opposite to the processing section side (rightward in FIG. 3), the rod 27b
is actuated to the right in FIG. 3, and the toggle link 29
Since the fixed mold 25 is pulled up through the clamp CL
P 1 and CL P 2 are in a released form with respect to the carriage 19. At this time, the rod 27c is also moved rightward in FIG. It will stick.

In this way, when the piston 27a is actuated rightward in FIG. 3, the clamps CI PI, CL P 2
is released from the carriage 19 and becomes fixed to the carriage base 9. Note that the state in which the clamps CLPI and CI-ρ2 are released from the carriage 19 in this manner will be hereinafter referred to as a "clamp released state."

Reference symbols @pswi and PSW2 indicated by broken lines in FIG. 2 indicate switch plates for detecting the general position M (area) of the clamps CLPI and ClF3. The switch plate PSW1 is provided near the origin (the right end position in FIG. 2), and the switch plate PSW2 is provided near the center. These switches are fixedly provided to the slide table 5. And these switch boards PSWI
, on PSW2 - if tL Ka (7) Cla/F CI -
When P 1 and CI-P2 exist, each switch plate P
Clamp presence signals are output from sw1 and PSW2, respectively.

The advantage of the switch board pswi is that it has two clamps CLPI,
When both ClF3 are positioned at the origin, both clamps C
The width is such that both LP1 and ClF3 can be detected.

Further, the length of the switch plate PSW2 is the length of the switch plate PSW2.
This is slightly better than twice the length of SW1. For the switch plates PSW2 and PSW1, for example, it is also possible to use what is called a so-called override prevention plate that has been used in the past.

FIG. 4 shows the switch group and actuator group attached to the plate material clamping device 1, and the NC of the plate material clamping unit 111 [machine MO (see FIG. 1) that controls these switch groups and actuator group! FIG. 2 is an explanatory diagram showing an outline of the fi setting.

The plate material clamping device 1 is provided with a large number of switches.

That is, the carriage 19 of the plate material clamping device 1 includes origin switches 0LS1.0LS2 that define the origin positions of clamps CLPI and CI P2, and clamps OL and P1.
, Clamp over 1 to label detection switch [OTl, LOI-2 that detects overtravel of CL P 2
and are set up. In addition, clamp CL P 1
The switch OR8 provided in both clamps CLP1 and Cl
This is a detection switch to prevent F3 from being overridden.

Furthermore, carriage overtravel detection switches C0T1 and C0T2 are provided at both ends IJ of the carriage base 9 to detect the A-bar 1 to label of the cartridge 19.

Further, as described above, switch plates PSW1 and PSW2 are fixedly provided to the carriage base 9.

On the other hand, the plate lamp assembly M1 is provided with a large number of actuators.

That is, the air cylinder device 2 is attached to the board lamp device M1.
An actuator L-5YA1.5YA2 is provided for driving the piston 27a of No.7. Further, the clamps CLPI and ClF3 are provided with actuators CL A 1 and CL A 2 for operating the gripping claws 23a.

Further, the plate material clamping device 1 is provided with an X-axis servo motor Mx for rotationally driving the ball screw 13. A Tn]-da and a tacho generator TG are attached to the 1J-bo motor Mx.

Note that the plate processing machine MC shown in Fig.
1- In addition, there is a Y-axis servo T-1 which drives the Kittridge base 9 in the Y-axis direction (a leak hold which drives the work holding device "fB'Al-1" in the vertical direction). Actico ■-ta W1-1Δ1 for loading.
WtlA2 is installed.

When the signals of the switch group shown above are processed, the cane will be activated.
The outline of the NO device that controls the data group is shown in a block diagram at the bottom of FIG.

The NC device straddle 31 includes an input section 33 for inputting switch signals from the switch group, a table control circuit 35, a clamp home return control circuit 37, and a clamp position control circuit 3.
9 and an actuator drive section/I.
3, and an output unit 45 that outputs a drive signal to the actuators except for the rear +J-bo of the actuator group;
X, Y @ η - Bo motor amp 47.49.

The control circuit/11 includes one or more CIs) U and RO
Control members such as M and RAM are included.

The table control circuit 35 drives the slide table 5 (see FIG. 3) in the Y-axis direction and drives the carriage 19 in the X direction in accordance with the machining program to place the workpiece W at a predetermined position in the machining section. It provides control.

FIG. 5 is a detailed circuit diagram of the clamp origin return control circuit 37, and FIG. 6 is an explanatory diagram of the division of origin return patterns.

The clamp origin return control circuit 37 includes an origin return pattern setting section 51, a state monitoring section 53, and a sequencer 55.

The origin return pattern setting section 51 receives the switch plate signals PSW1, PSW2 and the 10-point switch signal 0L from the input section 33.
S1, and depending on the signal state of these human signals,
As shown in FIG. 6, a judgment is made and a predetermined pattern is selected from among the four origin return patterns A, B, C, and D. Details of each pattern will be explained later using FIGS. 6 to 10.

The state monitoring unit 53 monitors the switch signals PSWl, P
SW2, OI-S 1 and origin switch signal 01-8
2 and constantly monitors the status of these signals.

The sequence IJ'5i 5 is 4f!, which will be described later with reference to FIGS. 6 to 10. It has four sequences A to [) according to the pattern Δ to D, and performs a predetermined sequence operation according to the pattern set by the origin return pattern setting section 51.

As shown in FIG. 6, in this example, the origin switch 01-
81, switch board PSWI, 1) 4f depending on the signal state of SW2! Control pattern △, B, c.

Set D. 1; It was sea urchin.

The pattern division of these scales is performed by a logic circuit provided in the origin return pattern setting section 51 according to the initial state of each switch signal. This logic circuit determines the five types of stripes '1 shown in FIG. 6 on the premise that the carriage 19 shown in FIG. 4 is at the origin position.

These five types of articles! The first is the 5 types of AND gates that determine 1.
・~ If you call it the fifth AND gate, the first AND gate is the origin switch 0+ 81 for the clamp CI Pl.
Pattern A is determined on condition that the switch plate PSW2 located at the medium heat position of the carriage base 9 is on. The second AND gate determines pattern B based on the condition 21 that the origin switch 0181 for the clamp CL P l is on and that the switch plate r-) SW 2 is off. Third
The AND gate indicates that the origin switch 0181 for the clamp Ci P l is off and that the switch plate PSW2
Pattern C is selected on the condition that is on.

The fourth ant game 1- is that the origin switch OL S 1 for the clamp CLPI is off and that the switch plate P
SW1 is off and switch plate PSW2
The condition is that the third ant game is off.
Pattern C is determined in the same manner as in steps 1 to 1.

The fifth AND gate determines that the origin switch 01 S 1 is off, the switch Mi P S W 1 is on, and the switch plate 1') S W 2
Pattern D is determined on the condition that is off.

The origin setting of clamps CI P1, C1, P2 = 15- is the left end of each clamp and each origin switch ('') lS
It is assumed that the origin is set at the position where 1, ('')l S2 coincides (see Figure 4).In addition, when setting the origin of the clamp, in 1, the carriage 19 is set at the position J shown in Figure 4.
, is assumed to be at the IJ origin position.

FIG. 7 (Explanatory diagram of J pattern A, (a) is an explanatory diagram of the initial state, (b1 is a flowchart showing the sequence.

As shown in Figure 7(a), the origin switch (11-8
1. If both switch plates PSW2 are on ( ), processing is performed in pattern A. In this state, origin switches OL and S1 are on, and switch plate [ ]S
Since W2 is on, both clamps are equivalent to m l1l
When setting the origin of the clamp CI Pl, move the carriage 19 to the left (in the 10x direction).
In addition, if the clamp CL I] 2 is moved further in the +X axis direction with respect to the Nitre ridge 19, the left end of the -VI7 ridge 19 will not protrude from the base 9, resulting in an over 1~ label. It is possible that there is a fear.

As shown in FIG. 7(b), step 701
First, put the clamp CI P2 into the released state.

Then, move the carriage 19 in the -X direction, step 70.
5 until it is confirmed that the switch plate PSWI is turned off.

Next, in step 707, the clamp CI Pi is released (,
Enter the terminal (with clamp CI P2 also open). Step 709 and step 711 are key 1ν ridge 1.
9 is moved v1 until the force direction origin switch 01-81 is turned off.

If it is determined in step 711 that the origin switch 0LS1 is off, the carriage 19 is moved to steps 713 and 7.
-X until M heat switch 01 S 1 is turned on at 15
move in the direction. As shown in step 717, the clamp CI-P 1 is fixed in this position and the clamp CL P
Finish setting the origin in step 1.

Next, the origin of the clamp CiP2 must be set. Therefore, in step 719, it is determined whether or not the origin switch 0LS2 is currently on. The reason for this is that if the origin switch OL S2 is on, the carriage 19 is moved in the +X direction as shown in step 721, and the origin switch OL S2 is turned off and the origin setting 4 is performed as shown in step 723. This is because the origin cannot be set unless the procedure is followed.

Steps 719 to 723 have been followed -I-, and in steps 725 and 727 the carriage 19 is moved in the -x right direction until the origin switch 01 S 2 is turned on, and in step 729 the clamp CL P 2 is fixed and two The work of returning the clamps CIP1 and CLP2 to their origin is completed.

FIG. 8 is an explanatory diagram of pattern B. (a) Figure is an explanatory diagram of the initial state, (1)) Figure shows the sequence 70-CH1
? - It is.

(a) As shown in the figure, pattern B 11 is selected under condition that the origin switch OL S 1 is on and the switch plate PSW2 is off. (From Figure 211, clamp CI-P 1 is on the origin switch, so clamp CI-P 1-1
To set the origin of 0 =, it is necessary to move the carriage 19 relatively to the left. It is understood that there exists a distance of As described above with reference to FIG. 2, the length of the switch IPSW2 in the X-axis direction is set h1 to be longer than twice the length of the switch plate PSWl (by Δ).

Therefore, as shown in FIG. 8 (tl), pattern B
Then, in step 801, clamp CLPI and c +-
Leave P 2 firmly attached to the + religiment 19.

Then, in steps 803 and 8o5, the carriage 19 is moved in the -X direction until the switch plate PSWI is turned off. At this point, since the quality of each switch plate is set to be appropriate as described above, the clamp cLP2 does not move to the right in the figure from the center position of the carriage base 9.

Next, in step 807, clamps CLP1, C1-P2
It opens and enters terminal A. This terminal A is the same as the terminal A in FIG. 7(b), and all of the following processes are
It is the same as that in Figure (1)). As a result, the two clamps CLPI and CIP2 are each given the origin authority.

FIG. 9 is an explanatory diagram of pattern C. (a), (b
) is an explanatory diagram of the initial state, and diagram (C) is a 70-chapter showing the sequence.

(a) lb) The sea urchin pattern C shown in the figure is judged under two types of conditions. (a) In the state shown in the figure, the origin switch O1, S 1, switch plates PSW1, PSW2
are off, and in this state, two clamps C
IPI, CI-, P2 are both two switch boards PSW1
, PSW2.

(1)) In the state shown in the figure, the origin switch OL S
1 is off, switch plate r'sW2 is on, and in this state, the two clamps are the origin switch 01 Sl
It exists in the right direction (-x direction) in the figure, and
One of the at least two clamps is shown at the end of the carriage 19.

In any of these conditions, the origin switch 01-81 can be turned on by the clamp CI-Pl by relatively moving the carriage 19 to the right in the figure. There is.

Therefore, in pattern C, both the two clamps CL P 1 and CL P 2 are connected to the carriage 1 in step 901.
Free from 9. Then, in steps 903 and 905, the carriage 19 is moved until the origin switch 0LSI is turned on.
Move in the X direction. As shown in step 907, at the position where the origin switch 0LS1 is turned on, the clamp CI P
If l is fixed and shifted, the origin setting of the clamps C1, Pl is completed.

Next, in step 909, it is determined whether or not the origin switch 01 S 2 is on at the position where the origin of the clamp CL P 1 is set, and if it is on, the carriage 19
In steps 911 and 913, move +x to the right and turn it off.

Next, in steps 915 and 91.7, the carriage 19 is moved in the -X direction until the origin switch 0LS2 is turned on, and in step 919, the clamp CI-P2 is fixed, and the origin return operation is completed.

FIG. 10 is an explanatory diagram of pattern D. (Figure aJ is an explanatory diagram of the initial state, (1)) The figure is a 70-chip diagram showing the sequence.

(a) As shown in the figure, when the origin switch Ol-81 is off, the switch plate PSWI is on, and the switch plate PSW2 is off, there is a clamp CI P1 at the right end of the carriage 19 in the figure. , CL P2 do not exist, and it is understood that the origin can be set simply by moving the carriage 19 relatively to the right in the figure. Therefore, the return to origin in this state is ([
]) can be processed in a sequence like this.

By the way, FIG. 10(a) is compared to FIG.
), in the state shown in FIG. 10(a), now two clamps CL P 1 and CL P 2
is fixed to the carriage 19 and the gear ridge 19 is moved in the right direction (-X direction) in the figure until the switch plate PSW1 is turned off.
It can be seen that if the clamp CLPICLP2 is moved to , the positional relationship of the clamp CLPICLP2 with respect to the carriage 19 will be the same as that shown in FIG. 9(a) or (11).

Therefore, if the pattern D shown in FIG. 10 (tl) were to be used as is, steps 1001 to 1005 would be inserted at the beginning of the process.

Pre-processing is performed in step 1001 by clamping CL P 1, C
This is a process in which the carriage 19 is moved in the -X direction until the switch plate PSW1 is turned off in steps 1003 and 1005, while keeping the IF3 fixed.

Therefore, the four types of patterns mentioned above are actually three types. However, if there are three types of patterns as described above, it is necessary to separately construct a circuit for performing the processes of steps 1001 to 1005 shown in FIG. 10('') as a pre-processing circuit.

As described above, the two clamps can be automatically returned by the clamp origin return control circuit shown in FIGS. 5 to 10.

FIG. 11 is a detailed circuit diagram of the clamp position control circuit 39 shown in FIG. 4.

The clamp position control circuit 39 controls two clamps CLP1 and CI P2 for the carriage 19 shown in FIG.
This is a circuit that processes the positioning of the

Note that the first positioning method is clamp CLP1.
, ClF2 is once returned to its origin in the manner shown in Figures 5 to 10, and then each clamp is moved to a predetermined position, and the second method is to move each clamp with reference to the current position of the clamp. There is a method of specifying and controlling the positioning of each clamp at a predetermined position.

However, in the first method, although the control sequence for clamp positioning is simple, it takes extra time to set each clamp to its origin, resulting in a lot of lost time from the entire plate preparation equipment. The disadvantage is that it requires

The second method has the advantage that each clamp can be positioned quickly, although the control sequence for clamp positioning is a little difficult.

Therefore, in this example, the second method is adopted so that clamp positioning can be performed quickly and the T-cutting efficiency of the plate processing machine is increased.

The clamp position control circuit 39 includes a clamp position command unit 57, a current position storage unit 59, 61 that stores the current position of the clamp CI PI CI P2, and clamps CLPI, C.
A mobile performance executive 63.65 who calculates the movement amount of IF3,
It has an actuator drive control section 69.

The clamp position command unit 57 controls each clamp CLP1, Cl
This command instructs where on the carriage F3 should be positioned. That is, here, a command is issued to position the clamp CLPI at position x1 and the clamp CLP2 at position x2.

It goes without saying that this command can be specified by the operator using the plate processing machine MC (see Figure 1), but for plate processing machines on automated lines, management (not shown) is required. It can be specified by the computer, or it can be automatically calculated and specified according to, for example, the width dimension of the automatically transported plate material.

The clamp CL P 1 , CL I) 2 movement amount training unit 63 , 65 outputs the command signal of the A device X + , Position Xo I
.

Find the difference from Xol and each clamp CI-P 1 , C1,
- Deduce the movement mΔXI and ΔX2 of P2.

The acticotitter control section has a pattern setting section 71, etc., a sequencer IJ73, etc. Pattern setting section 71
sets the control pattern according to predetermined conditions, and executes the sequence of the set pattern.

FIG. 12 111 is an explanatory diagram of the pattern for clamp position control.

Each clamp (': Movement amount ΔX+ of LP1, ClF3.

If ΔX2 is classified in terms of the direction (-, +i) and the magnitude of absolute values a and b, it can be classified into eight types, J: sea urchin shown in FIG. 12.

The pattern setting section 71 has clamps CL P 1, Cl
Input X+ and ΔX2 to the movement amount of F3 and select a predetermined control pattern according to the classification shown in FIG. Then, the sequencer 73 executes the thirteenth sequence according to the set pattern.
Execute the procedure described below.

(i) It is not necessary to position the 4-spring 19 at the origin position; for example, it can be done in the middle of the carriage base 90, or at another origin (origin in one direction) that covers the left end of Figure 4. However, the position control of clamps CI P 1 and CL P 2 is
Generally, the carriage 19 is often used when a new plate is brought in, so here it is assumed that the carriage 19 is at the origin position in order to simplify the control sequence.

FIGS. 13 to 20 are sequence explanatory diagrams of eight types of control patterns. The figure shows the - stage (13.15°17.19th
(Fig.) and the lower part (Fig. 14.16.18.20), but the first part of the diagram shows the case where a≧b, and the bottom part shows the case where a<b. . In addition, Figure 13~
In FIG. 20, the fixed state of clamps CLP1 and CL is indicated by the tabs indicating the clamps.
] is shown in contact with the carriage 19, and in the released state, the mark indicating the clamp is shown in contact with the carriage 19.
It is shown away from 9.

Pattern 1 shown in FIG. 13 is clamp CLPi,
The amount of movement of ClF3 is both in the -X direction, and a≧b
This is the control pattern when

As shown in the figure, first, tighten the key I7 screw 19 with the clamp C1-
Move by ra in the -X direction while keeping Pl and C1-P2 fixed. Then, the clamp CLP1 is released and the carriage 19 is moved by a-b in the -X direction. Then, at this point, the clamp CL P 2 is released and the carriage 19
l) in the +X direction, and then clamp CL
Fix P1 and ClF3 to the carriage 19 to form pattern 1.
Finish the work.

Hereinafter, the operations for patterns 2 to 8 are performed as shown in the figure.

What should be noted about these eight patterns is that in all of them, the carriage 19 is moved back and forth once (), and that they are designed to avoid unnecessary movements as much as possible. .

That is, the pattern examples for positioning each clamp on the carriage are not originally limited to the eight types described above, and the contents can be changed, and there may be, for example, four patterns.
It is also mathematically possible to reduce it to a species. but,
In this example, eight types of patterns as described above are set with the main focus being on accurate and quick control operations.

In addition, when an origin in one direction (the right end in FIG. 4) can be used instead of the origin in ten directions shown in FIG.
The relative relationship between LPI and clamp 2 may be reversed.

In this way, in this example, we set a pattern that performs appropriate operations for each case according to the case classification shown in Figure 12, so that unnecessary or unreasonable operations are avoided in the control pattern.
In all cases, clamps CI-P1 and ClF3 are
Proper positioning on the carriage is possible.

[Effects of the Invention] According to the invention as explained by the first person, it is possible to configure the plate material clamping device during the song, and it is possible to install an appropriate number of board clamping devices.
Highly automatic control is possible without the need for a dedicated servo mechanism in the clamp.

In particular, when the plate clamping device according to the present invention is applied to a plate I, 1 processing machine in an automated line, it is possible to automatically control all the plate clamping devices.
It will be possible to advance the FMS.

[Brief explanation of the drawing]

The drawings all show examples, and Fig. 1 is a front view showing one example of a plate material processing machine, Fig. 2 is an enlarged perspective view of a plate material clamping device, and Fig. 3 is an enlarged perspective view of the same-L plate material clamping device. FIG. 3 is an enlarged cross-sectional explanatory diagram. Figure 4 is an explanatory diagram of the NC device, Figure 5 is a circuit diagram of the clamp origin return circuit, Figure 6 is an explanatory diagram of the clamp origin return pattern, Figures 7(a), 8(b), Figure 9 (a>,
(b) and FIG. 10(a) are control patterns 8 to D.
7 (tl), 8 (b), 9 (C), and 10 (b) are patterns A, B, C, and I, respectively) This is a Moro chart showing the contents of the sequence. Figure 11 is a circuit diagram of the clamp position control circuit, Figure 12 is an explanatory diagram of the pattern for clamp position control, and Figure 13.1.
4, 15, 16, 17, 18, and 19.20 are operation explanatory diagrams showing the sequence contents of patterns 1 to 8 shown in FIG. 12, respectively. 1... Plate material clamp device 7... Fixing/release mechanism 9... Carriage base 13... Ball screw 19... Carriage CLPI... First clamp CI P 2... Second clamp 31...NC device 35...Table control circuit 37...Clamp home return control circuit? Width 62-21490 (10) Fig. 9 fcll OLS 1 0FF P91/l/1 0FF PSW2 OFF Fig. 9 (b) Fig. 9 (Cl pattern C CLPI CLP2 error 901゛゛・°)・N゛-X Chizono 903 to temple η
Gravity, 0N905 OLS 1 0FF PSW2 ON Fig. 10 ((11 0L51 OFF 5WION PSW2 OFF Fig. 10 tb) ?8 Kaisho 62-21490 (17) Procedure name book (self-proposal) Patented on October 23, 1985 Director General Uga Michibu 1, Indication of the case Patent Application No. 160756 of 1985 2, Title of the invention Plate material clamping device 3, Relationship with the case of the person making the amendment Patent applicant address 105 Toranomon, Minato-ku, Tokyo 1-2-3
Toranomon No. 5 Building 5th Floor Telephone: Tokyo (504) 3075, 3076, 3077
No. 6, Subject of amendment (1) Detailed description of the invention column (2) Drawing 7, Contents of amendment (1) Specification, page 11, line 19, "...
The phrase "to prevent override" has been corrected to "to prevent overtravel." (2) In the specification, page 17, line 18, “...
``+Towards the X-axis direction...'' is corrected to ``Towards the -X-axis direction...''. (3) Specification, page 17, line 19, “...19
The left end of..." is corrected to read, "...the right end of one is...". (4) Mei IIA, page 23, line 11, “・
``The return to origin is as shown in (b)...'' is corrected to ``The return to origin is as shown in (b)...''. (5) In the specification, page 30, line 6, “and,
For example, there are 4 types...''. For example, pattern 1, 3.5.7, pattern 2
．． 4, 6.8, it is also possible to move the clamp so that it does not come off the material during movement and positioning. Also, the above 8 types have been reduced to 4 types...'' (6) Amend Figures 10(a) and (b) as shown in the attached sheet. 8. Inventory drawing of attached documents Figures 10 and above Figure 10 (ω n 0L51 OFF 5WION PSW2 OFF Figure 10 (b)

Claims (1)

[Claims] A carriage base with a length approximately equal to the processing width of the plate processing machine, a carriage driven by a servo mechanism and movably mounted on the carriage base, and a carriage that can be fixed to and released from the carriage, and that is fixed and fixed to the carriage. In response to the release action, there is a fixing and fixing device that can be released and fixed to the carriage base.
A suitable number of clamps are attached to the carriage through a release mechanism, and the carriage and the clamps are fixed to or released from the carriage or the carriage base, and the carriage is moved to a predetermined position. A plate material clamping device comprising: a control circuit for controlling the position to an appropriate position;