JP3757010B2 - Material indexing equipment for laser processing machines - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a material indexing device for a laser processing machine.
[0002]
[Prior art]
In the material indexing device of laser processing machines, air chucks or other power chucks are used to enable the material to penetrate the inside of the chuck, especially for the chuck of the material indexing device that rotates and positions cylindrical materials such as pipes. It is difficult to use a manual 3-jaw or 4-jaw chuck. Further, in manual chucking, confirmation of whether or not the material is correctly mounted on the chuck relies on visual observation.
[0003]
[Problems to be solved by the invention]
In the material indexing apparatus as described above, since the material is manually mounted, there is a problem that a large amount of labor and time are required for mounting and automatic operation cannot be performed. In addition, there is no means for automatically detecting even if the mounting position of the material is shifted or detached during processing after the material is mounted, so there is a problem that even if a processing failure occurs, it cannot be detected. is there.
[0004]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a material detecting means and a power chuck for automatically detecting a positional shift after mounting a material or a mounting failure. It is to provide a material indexing device for a laser processing machine capable of automatic operation.
[0005]
[Means for Solving the Problems]
As a means for solving the above-mentioned problem, the material indexing device for a laser beam machine according to claim 1 is provided with a plurality of support rollers for rotatably supporting the outer periphery of the material rotating member on the face plate of the main body frame, and the material rotating member A gear is provided on the outer periphery of the motor, and two drive gears that engage with the gear are provided in the main body, a notch groove that is shorter than the distance between the axes of the two drive gears is provided in the material rotating member, and the two A servo motor that rotationally indexes the material rotating member via two drive gears is provided, a clamp cylinder that presses and fixes the material to the material rotating member is provided via an accumulator, and is connected to the clamp cylinder and the accumulator. A pair of fixed couplings are provided on the material rotating member, and a pair of movable couplings detachably attached to the fixed couplings Provided coupling moving means provided in serial body, it is an Abstract that formed by connecting the mobile coupling to an air source through a directional control valve.
[0006]
The material index device for a laser beam machine according to claim 2 is the material index device for a laser beam machine according to claim 1, wherein the coupling moving means is a fluid pressure cylinder.
[0007]
The material indexing device for a laser processing machine according to claim 3 is provided with a plurality of support rollers for rotatably supporting the outer periphery of the material rotating member on the face plate of the main body frame, and provided with a gear on the outer periphery of the material rotating member. Two drive gears that engage with the gears are provided in the main body, the material rotating member is provided with a notch groove that is shorter than the distance between the axes of the two drive gears, and the face plate is provided with the material via the two drive gears. In a material indexing device provided with a servo motor for rotationally indexing a rotating member, a spring return type single-acting clamp cylinder for pressing and fixing the material to the material rotating member is provided, and the material rotating member can be rotated to the face plate A C-shaped accumulator covering almost the entire area of the material rotating member is provided on the surface of the face plate on the side facing the material rotating member. Forming a flow chamber, forming a flow path communicating with the upper part of the accumulator chamber from the clamp cylinder, and providing a check valve at the end of the flow path to prevent outflow of fluid from the clamp cylinder side, The gist of the invention is that a check valve opening / closing means capable of opening and closing the check valve is provided on the face plate side, and the accumulator chamber is connected to a pressure source via a direction control valve.
[0008]
A material indexing device for a laser beam machine according to a fourth aspect is the material indexing device for a laser beam machine according to the third aspect, wherein the pressing means is a fluid pressure cylinder.
[0009]
Therefore, according to the invention described in claims 1 to 4, in the material indexing device of the laser processing machine, the power chuck that can be used even during indexing is provided, so that automatic operation is possible. became. In addition, since the material loading can be automated, the material loading time can be significantly shortened compared to the manual case.
[0010]
The material indexing device for a laser beam machine according to claim 5 is the material indexing device for a laser beam machine according to claim 1 or 3, wherein a material loading detecting device for detecting material loading is provided on the material rotating member. This is the gist.
[0011]
Therefore, even if the mounting position of the material is shifted or detached during processing after the material is mounted, it can be automatically detected. Therefore, it is possible to minimize the occurrence of processing defects.
[0012]
The material indexing device for a laser beam machine according to claim 6 is the material indexing device for a laser beam machine according to claim 5, wherein the material loading detecting device is a signal that rotates together with the material rotating member on the material rotating member. A detection ring, two signal detectors provided on a face plate of the main body frame that contacts the signal detection ring at a wider interval than the notch groove, a contact that operates by mounting a material on the material rotating member, It consists of an electric circuit provided between two signal detectors and a power source, and when the contact is ON, the electric circuit between at least one of the signal detectors and the power source conducts, so that the material is mounted. The gist is to detect.
[0013]
Therefore, it is possible to automatically detect material loading even when the material indexing device is rotating.
[0014]
The material index device for a laser beam machine according to claim 7 is the material index device for a laser beam machine according to claim 6, wherein the contact is a movable contact comprising a material contact member and a contact member, and the movable contact. The movable contact is pivotally supported on the material rotating member, and an elastic machine for projecting one side of the movable contact from the material support surface is provided on the movable contact. The gist is to provide a fixed contact having an air flow path substantially at the center so as to be able to contact the other side of the movable contact, and to eject air from the fixed contact to the material support portion when the contact is in a non-contact state. Is.
[0015]
Therefore, since the material can be accurately mounted on the material support portion, the processing accuracy is improved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show an example in which the material indexing device of the laser processing machine according to the present invention is used in a cantilever type three-axis optical axis movement type NC laser processing machine. 1 is a front view of the laser beam machine 1, and FIG. 2 is a side view taken along line II-II in FIG.
[0017]
Now, referring to FIGS. 1 and 2, the laser beam machine 1 includes an X-axis carriage 3 that can be moved and positioned in the X-axis direction by an X-axis drive means that is driven under the control of an NC device (not shown). The X-axis carriage 3 includes a Y-axis carriage 5 that can be moved and positioned by Y-axis driving means that is driven under the control of the NC device (not shown) in the Y-axis direction orthogonal to the X-axis direction. Is provided. A laser processing head 7 that can be moved and positioned in the Z-axis direction orthogonal to the X and Y axes is provided below the Y-axis carriage 5. The laser processing head 7 has a condensing device for laser processing. A nozzle 9 having (not shown) is attached.
[0018]
A carbon dioxide laser oscillator 11 is provided on the upper portion of the laser processing machine 1, and a laser beam from the carbon dioxide laser oscillator 11 passes through a laser processing head 7 provided on the Y-axis carriage 5. The nozzle 9 is guided by an optical system (not shown).
[0019]
In the NC laser processing machine of the cantilever type three-axis optical axis movement type, a work table (not shown) is provided in the processing region below the laser processing head 7 depending on the processing contents, for example, when processing a plate material. When the pipe is processed, the material index device 13 can be installed as shown in FIGS. The pipe W attached to the material index device 13 can be continuously index-controlled by a pipe rotation servomotor driven under the control of the NC device of the laser beam machine 1. .
[0020]
Next, a first embodiment of the material index device 13 will be described with reference to FIG. The main body frame 15 having a C-shaped groove portion of the material index device 13A of the first embodiment is constituted by a face plate 19 erected on the base 17. On one side surface of the face plate 19, five support rollers 23 that engage with guide grooves (not shown) provided on the outer periphery and rotatably support the material rotating member 21 are provided at substantially equal intervals. is there. The material rotating member 21 is provided with a C-shaped groove substantially the same as the C-shaped groove of the main body. The support roller 23 is rotatably provided on a rotary shaft 25 fixed to the face plate 19 of the main body frame 15.
[0021]
The material rotating member 21 is provided with, for example, a notch groove 27 having a width L for carrying the pipe W into and out of the material rotating member 21. Therefore, the appearance of the material rotating member 21 is substantially “C-shaped”. Further, a gear 29 is provided on the outer diameter portion of the material rotating member 21, and two drive gears 33 driven by a servo motor 31 are engaged with the gear 29 of the outer diameter portion.
[0022]
The drive gear 33 is provided for rotation on a rotary shaft 35 provided on the surface side of the face plate 19 of the main body frame 15. The rotating shaft 35 extends through the face plate 19 to the back side of the face plate, and a pulley (not shown) such as a toothed pulley is rotatable on the rotating shaft 35 extended to the back side. Is provided. Similarly, an output shaft (not shown) of the servo motor 31 provided on the front surface side of the face plate 19 is also provided so as to protrude from the back surface side of the face plate 19, and a drive pulley provided on the output shaft (not shown) of the servo motor 31. A belt 37 such as a toothed belt is wound around (not shown) and a pulley (not shown) provided on the rotating shaft 35 of the drive gear 33.
[0023]
The distance between the two drive gears is larger than the width L of the notch groove 27 provided in the material rotating member 21. A tension adjusting means 39 for adjusting the tension of the belt 37 for driving the drive gear 33 to an appropriate tension is provided.
[0024]
Although various types can be adopted as the tension adjusting means, in the tension adjusting means 39 of the present embodiment, the swing arm 41 is centered around the rotation shaft 43 on the back side of the face plate 19. Further, a rotation roller 45 is provided at the other end of the swing arm 41 so as to be pressed and engaged with the belt 37.
[0025]
In the above configuration, when the servo motor 31 is driven under the control of the NC device, the material rotating member 21 is rotationally driven by the rotation angle specified by the rotation speed specified by the two drive gears 33 by the specified rotation angle. be able to.
[0026]
A material support 47 for holding and fixing the material W such as a pipe is provided at the bottom of the notch groove 27 of the material rotating member 21. A clamp cylinder 49 for pressing and fixing the material W is provided on the material support portion 47 on one side of the notch groove 27 at the front portion of the material rotating member 21. Note that a pneumatic or hydraulic cylinder can be used as the clamp cylinder, and in this embodiment, an example in which a pneumatic cylinder is used as the clamp cylinder will be described.
[0027]
Referring to FIGS. 3 and 4, an accumulator 51 for supplying compressed air to the clamp cylinder 49 is provided on the other side of the notch groove 27 at the front portion of the material rotating member 21. The accumulator 51 and the piston side of the clamp cylinder 49 are connected by a pipe line 53. In order to supply compressed air to the pipe line 53, a coupling 57 that can connect the pipe line 53 to the pneumatic pressure source 55 at one end is provided on the back side of the material rotating member 21. Similarly, a pipe 59 is provided to supply compressed air to the rod side of the clamp cylinder 49, and a coupling 61 that can connect the pipe 59 to the pneumatic pressure source 55 at one end also at the end of the pipe 59. Is provided on the back side of the material rotating member 21. A pressing plate 50 that presses the material W is provided at the end of the piston rod of the clamp cylinder 49, and the material W is sandwiched in cooperation with the pressing plate 50 on the side facing the pressing plate 50. The pressing plate 52 is provided.
[0028]
When the material rotating member 21 is located at the origin position (position shown in FIG. 3), a pair of air pressure source 55 and the pair of couplings 57 and 61 provided on the back side of the material rotating member 21 can be connected with one touch. The movable couplings 63 and 65 are provided on the main body frame 15 of the material index device 13A so as to be movable forward and backward. The moving couplings 63 and 65 are held by a coupling holding body 69 that moves forward and backward by a coupling moving cylinder 67 provided in the main body frame 15. It should be noted that either the pneumatic pressure or the hydraulic pressure may be used for the coupling moving cylinder 67, but in the description of the present embodiment, an example using a pneumatic cylinder cylinder has been described.
[0029]
The moving coupling 63 is connected to the A port of the first electromagnetic direction control valve 73 via a pipe line 71, and the moving coupling 65 is connected to the B port of the first electromagnetic direction control valve 73 via a pipe line 75. Connected to the port. The P port of the first electromagnetic direction control valve 73 is connected to the air pressure source 55. The piston side of the coupling moving cylinder 67 is connected to the A port of the second electromagnetic directional control valve 79 via a pipe line 77, and the rod side is connected to the B port via a pipe line 81. . The P port of the second electromagnetic direction control valve 79 is connected to the air pressure source 55.
[0030]
In the above configuration, when the material rotating member 21 rotates around the rotation center O and returns to the origin position (the state shown in FIG. 3), the pair of couplings 57 and 61 provided on the material rotating member 21 and the main body frame 15 The movable couplings 63 and 65 provided on the side are in a connectable position state. Note that the material rotation member 21 is returned to the origin position (the state shown in FIG. 3) by a known detection means (not shown) such as a proximity switch or a limit switch. Can be detected.
[0031]
In the state described above, the solenoids (electromagnetic coils) SOL1, SOL2, and SOL3 of the first electromagnetic direction control valve 73 and the second electromagnetic direction control valve 79 are all in a non-excited state. Therefore, the first electromagnetic direction control valve 73 is in the neutral position, and the second electromagnetic direction control valve 79 is in a state where the P port and the B port are in communication. Therefore, the high pressure air is not supplied from the pneumatic pressure source 55 to the moving couplings 63 and 65, and the high pressure air is supplied to the rod side of the coupling moving cylinder 67 via the pipe 81. The piston rod of the coupling moving cylinder 67 is in the retracted position.
[0032]
If the solenoid SOL3 of the second electromagnetic directional control valve 79 is excited in the above state, high pressure air is supplied from the pneumatic pressure source 55 to the piston side of the coupling moving cylinder 67, and the rod side is in communication with the atmosphere. Therefore, the piston rod moves forward and the moving couplings 63 and 65 and the couplings 57 and 61 are connected. Therefore, if the solenoid SOL1 of the first electromagnetic directional control valve 73 is excited, high-pressure air is supplied from the pneumatic pressure source 55 to the piston side of the accumulator 51 and the clamp cylinder 49 through the pipe 71, and the clamp cylinder 49 is The material W can be fixed by moving forward.
[0033]
In the above process, when the material W is fixed, the solenoid SOL3 of the second electromagnetic directional control valve 79 is de-energized to retract the coupling moving cylinder 67, and the moving couplings 63, 65 and the couplings 57, 61 are connected. At the same time, the solenoid SOL1 of the first electromagnetic directional control valve 73 is de-energized to cut off the supply of high-pressure air from the pneumatic pressure source 55 to the moving couplings 63 and 65.
[0034]
In the above state, the material rotating member 21 is rotatable with the material W sandwiched therebetween, and therefore laser processing is performed while the material rotating member 21 is driven by the servo motor 31 to rotate the material W to an arbitrary position. can do. With respect to slight air leakage from the clamp cylinder 49 while the material rotating member 21 is rotating, air is supplied from the accumulator 51, so that the clamping force of the clamp cylinder 49 does not decrease. Further, since the rotation of the material rotating member 21 is driven by two drive gears having an axial distance wider than the width L of the notch groove 27 of the material rotating member 21, the material rotating member 21 is in a range of 360 degrees. Can be driven. Further, since the notch groove 27 is provided in the material rotating member 21, the material W can be carried in and out from above the material index device, so that the material can be easily attached to and detached from the material index device.
[0035]
When the laser processing of the material W is finished, the material rotating member 21 is returned to the origin position, the solenoid SOL3 of the second electromagnetic direction control valve 79 is excited, the coupling moving cylinder 67 is advanced, and the moving coupling 63 is moved forward. , 65 and couplings 57 and 61 are connected, and at the same time, the solenoid SOL2 of the first electromagnetic direction control valve 73 is energized so that the P port of the first electromagnetic direction control valve 73 and the pipe line 75 are communicated with each other. At the same time, if the B port and the pipe line 71 are opened to the atmosphere via the A port, the clamp cylinder 49 moves backward to release the material W and remove the material W. If there is a new processing, the material W can be fixed through the above-described steps and the next processing can be performed.
[0036]
Next, the material index device 13B of the laser beam machine according to the second embodiment will be described with reference to FIGS. 5, 6, and 7. FIG. Since the main body frame 15 and the drive mechanism of the material rotating member 21 of the material index device 13B of the second embodiment are the same as those of the material index device 13A of the first embodiment, description thereof is omitted. The same parts as those of the material index device 13A are denoted by the same reference numerals.
[0037]
In the material index device 13B, a so-called loose single-action clamp cylinder 83 with a spring return is provided on the material rotating member 21 in place of the double-action clamp cylinder 49 in the material index device 13A. Note that a pneumatic or hydraulic cylinder can be used as the clamp cylinder, and in the present embodiment, an example using a pneumatic cylinder is described.
[0038]
The material rotating member 21 is rotatably provided in close contact with the face plate 19 of the main body frame 15, and a C-shaped accumulator covering almost the entire area of the material rotating member 21 on the surface of the face plate 19 facing the material rotating member 21. A chamber 85 is formed. The material rotating member 21 and the C-shaped accumulator chamber 85 are kept airtight by a seal member 87.
[0039]
A flow path 89 that communicates from the clamp cylinder 83 to the upper portion of the accumulator chamber 85 is provided in the material rotating member 21, and a clamp cylinder is provided at the end of the flow path 89 that communicates the flow path 89 and the accumulator chamber 85. A check valve 91 is provided to prevent the outflow of air from the 83 side. Further, a fluid pressure cylinder 93 is provided on the face plate 19 side of the main body frame 15 as a check valve opening / closing means for allowing the check valve 91 to be opened and closed. Further, the accumulator chamber 85 is provided with an air supply port 95 connected to an air pressure source via a directional control valve (not shown). Note that a pneumatic or hydraulic cylinder can be used as the fluid pressure cylinder 93. In the present embodiment, an example in which the pneumatic cylinder 93 is used is described.
[0040]
In the normal state, the check valve 91 is normally closed because the ball 99 is pressed against the valve seat at the end of the flow path 89 by the spring 101. On the other hand, when the piston rod 97 advances to the piston rod 97 of the pneumatic cylinder 93 and presses the ball 99 of the check valve 91, the accumulator chamber 85 and the clamp cylinder 83 communicate with the discharge port 103. A flow path 105 is provided.
[0041]
In the above configuration, a directional control valve (not shown) connected to the air supply port 95 is appropriately operated to shut off the air supply from the directional control valve, and the pneumatic cylinder 93 which is a check valve opening / closing means is directional controlled. A valve (not shown) is actuated appropriately to advance the piston rod 97 and press the ball 99 of the check valve 91, thereby connecting the accumulator chamber 85 and the clamp cylinder 83 through the flow path 105 to the discharge port 103. The air in the clamp cylinder 83 and the accumulator chamber 85 is exhausted to the atmosphere through the discharge port 103.
[0042]
As a result, the clamp cylinder 83 is retracted by the spring, and the material W is released. When fixing the material W, in this state, the material W is mounted between the pressing plate 50 provided at the end of the piston rod of the clamp cylinder 83 and the pressing plate 52 provided on the material rotating member 21, and vice versa. The pneumatic cylinder 93 as a stop valve opening / closing means is retracted to close the check valve 91, and a directional control valve (not shown) connected to the air supply port 95 is appropriately operated to operate the air supply port 95. If air is supplied to the accumulator chamber 85, air is supplied from the accumulator chamber 85 through the check valve 91 to the clamp cylinder 83 to fix the material.
[0043]
In the above state, the servomotor 31 is driven under the control of the NC device to rotate the material rotating member 21 to perform laser processing of a desired shape on the material W. While the material rotating member 21 is passing over the accumulator chamber 85, the pressure from the accumulator chamber 85 is applied to the clamp cylinder 83 via the check valve 91, and air leakage from the clamp cylinder 83 is prevented. Can be covered. Further, when the check valve 91 provided on the material rotating member 21 is at a position away from the accumulator chamber 85, the check valve 91 is closed and air does not leak from the clamp cylinder 83.
[0044]
FIGS. 8, 9 and 10 show 13C of the third embodiment of the material indexing device of the laser processing machine. Most of 13C of the third embodiment is the same as that of the first embodiment, and is common except for the material loading detection device 107 provided on the material rotating member 21 of the material indexing device. The illustration and description of parts that are not necessary for the present embodiment are omitted.
[0045]
8, 9 and 10, a C-shaped signal detection ring 109 is fixed to the outer periphery of the surface of the material rotating member 21 by appropriate means such as screwing or bonding. The outer periphery of the signal detection ring 109 is made of a good electric conductor, and the conductor portion and the material rotating member 21 are electrically insulated.
[0046]
The material loading detection device 107 includes an electrical contact that operates according to the weight of the material W when the material W is loaded on the material support 47 and an electric circuit that operates according to the ON state of the contact.
[0047]
The electrical contact is provided with a box-shaped housing 113 opened upward on the lower surface of the material support plate 111 at the bottom of the material support portion 47, and the swing shaft 115 provided on the housing 113 is contacted with the material W. A movable contact 123 formed by integrally connecting a contact member 117 and a contact member 119 contacting the fixed contact 127 with a screw 121 is pivotally supported, and an air flow path 125 is provided at substantially the center. The fixed contact 127 provided is provided on the housing 113, and one end side of the movable contact 123 is provided on the fixed contact 127 so as to be freely contactable. The fixed contact 127 is connected to a pipe line 53 between the clamp cylinder 49 and the piston side via a pipe joint 142. The fixed contact 127 is electrically insulated from the pipe joint 142.
[0048]
The other end side of the movable contact 123 is urged upward by an elastic machine 129 such as a coil spring or a urethane spring provided in the housing 113, and the material support plate 113 on the upper surface of the housing 113 In addition, a hole 131 is provided in which a part of the movable contact 123 can protrude and retract to an upper position of the material support plate 111.
[0049]
As shown in the electric circuit of FIG. 10, the swinging shaft 115 is connected to the minus (minus) side of the power source 139 via an appropriate resistor 133 and a normally open relay contact 137 of the relay 135. At the same time, it is connected to the electric conductor portion on the outer periphery of the signal detection ring 109. One end of the fixed contact 127 is connected to the + (plus) side of the power source 139, and two signal detectors 141 provided on the other end are connected to an electric conductor portion on the outer periphery of the signal detection ring 109. . The interval between the positions where the two signal detectors 141 come into contact with the signal detection ring 109 is larger than the width L of the notch groove 27 provided in the rotating member 21. The relay 135, the movable contact 123, and the relay contact 137 are connected in series to the power source 141.
[0050]
In the above configuration, when the material W is not mounted on the material support 47, the left end of the movable contact 123 is pressed upward by the bullet 129, so the right end of the movable contact 123 is in contact with the fixed contact 127. Is in a state. Therefore, in the electric circuit shown in FIG. 10, the relay 135 is excited and the relay contact 137 is closed, and the current from the power source 139 is resistance through the two signal detectors 141 and the signal detection ring 109. A circuit flowing to 133 is formed.
[0051]
When the material W is attached to the material support 47, the left end of the movable contact 123 is pushed down against the upward biasing force of the bullet 129 by the weight of the material W, and the right end of the movable contact 123 And the fixed contact 127 are separated from each other. Therefore, the relay 135 is de-energized and the relay contact 137 is opened, and the current from the power source 139 does not flow to the resistor 133.
[0052]
The state of whether or not current is flowing through the resistor 133 as described above, for example, by detecting the presence or absence of voltage across the resistor 133 or the presence or absence of current by a known means, the material W is applied to the material support 47. It can be detected whether or not it is attached. In addition, since the position of the two signal detectors 141 is larger than the width L of the notch groove 27 provided in the rotating member 21, the rotating member 21 is rotating and at any position of 360 degrees. Whether or not the material W is loaded can be detected.
[0053]
Further, when it is detected that the movable contact 123 and the fixed contact are in a non-contact state, air is ejected from the air flow path 125 provided substantially at the center of the fixed contact to the material support portion 47. is there.
[0054]
【The invention's effect】
According to the first to fourth aspects of the invention, since the power chuck that can be used even during indexing is provided, automatic operation can be performed. Furthermore, since the material loading can be automated, the material loading time can be significantly shortened compared to manual operation, and the production efficiency can be improved.
[0055]
According to the fifth aspect of the present invention, it is possible to automatically detect even if the mounting position of the material is shifted or detached during processing after the material is mounted. Therefore, it is possible to minimize the occurrence of processing defects.
[0056]
According to the invention described in claim 6, since the material loading can be automatically detected even when the material indexing device is rotating, the reliability of the automatic operation is further improved.
[0057]
According to the invention described in claim 7, since the material can be accurately mounted on the material support portion, the processing accuracy is improved.
[Brief description of the drawings]
FIG. 1 is a front view of an example in which a material indexing device for a laser beam machine according to the present invention is used in an NC laser beam machine.
2 is a cross-sectional view taken along line II-II in FIG.
FIG. 3 shows a first embodiment of a material indexing device for a laser beam machine according to the present invention.
FIG. 4 is a pneumatic circuit diagram according to the first embodiment.
FIG. 5 is a front view of a material rotating member of a second embodiment of the material indexing device for a laser beam machine according to the present invention.
6 is a side view of FIG. 5. FIG.
7 is a cross-sectional view taken along line VII-VII in FIG.
FIG. 8 is a view showing a material loading detecting device in a third embodiment of a material indexing device of a laser beam machine according to the present invention.
FIG. 9 is an enlarged detail view of a part A in FIG.
FIG. 10 shows an electric circuit in the material loading detection apparatus according to the third embodiment.
[Explanation of symbols]
1 Laser processing machine
3 X-axis carriage
5 Y-axis carriage
7 Laser processing head
9 nozzles
11 Gas laser oscillator
13 (A, B, C) Material indexing device
15 Body frame
17 base
19 face plate
21 Material rotating member
23 Support roller
25, 35 rotation axis
27 Notch groove
29 Gear
31 Servo motor
33 Drive gear
37 belt
39 Tension adjusting means
41 Swing arm
43 Rotating shaft
45 Rotating roller
47 Material support
49, 83 Clamp cylinder
50, 52 Press plate
51 Accumulator
53, 59, 71, 75, 77, 81
55 Air pressure source
57, 61 Coupling
63, 65 Moving coupling
67 Coupling moving cylinder
69 Coupling holder
73, 79 Electromagnetic direction control valve
85 Accumulator room
87 Seal member
89, 105, 125 channels
91 Check valve
93 Fluid pressure cylinder
95 Air supply port
97 Piston rod
99 balls
101 spring
103 outlet
107 Material loading detection device
109 Signal detection ring
111 Material support plate
113 Housing
115 Oscillating shaft
117 Material contact member
119 Contact member
121 screw
123 Movable contact
127 Fixed contact
129 ammunition
131 holes
133 resistance
135 Relay
137 Relay contact
139 power supply
141 signal detector
142 Pipe fitting

Claims (7)

A plurality of support rollers for rotatably supporting the outer periphery of the material rotating member are provided on the face plate of the main body frame, and a gear is provided on the outer periphery of the material rotating member and two drive gears that are engaged with the gear are provided on the main body. The material rotating member is provided with a notch groove shorter than the distance between the axes of the two drive gears, and the face plate is provided with a servo motor for rotating and indexing the material rotating member via the two drive gears. A clamp cylinder that presses and fixes the material to the member is provided via an accumulator, and a pair of fixed couplings connected to the clamp cylinder and the accumulator is provided on the material rotating member, and a pair that can be attached to and detached from the fixed coupling. The moving coupling is provided in the coupling moving means provided in the main body, and the moving coupling is air-operated through the direction control valve. Materials index device of a laser processing machine, characterized by comprising connecting to a source. 2. The material indexing device for a laser beam machine according to claim 1, wherein the coupling moving means is a fluid pressure cylinder. A plurality of support rollers for rotatably supporting the outer periphery of the material rotating member are provided on the face plate of the main body frame, and a gear is provided on the outer periphery of the material rotating member and two drive gears that are engaged with the gear are provided on the main body. A material indexing device in which a notch groove shorter than the distance between the axes of the two drive gears is provided in the material rotating member, and a servo motor that rotationally indexes the material rotating member via the two driving gears is provided in the face plate. The material rotating member is provided with a spring return type single-acting clamp cylinder that presses and fixes the material, the material rotating member is provided in close contact with the face plate so as to be rotatable, and the material rotating member facing the material rotating member A C-shaped accumulator chamber is formed on the surface of the face plate over substantially the entire area of the material rotating member, and the accumulator chamber is formed from the clamp cylinder. A flow path communicating with the upper part of the chamber is provided, and a check valve for preventing the fluid from flowing out from the clamp cylinder side is provided at an end of the flow path, and the check valve can be opened and closed on the face plate side. A material indexing device for a laser processing machine, wherein a check valve opening / closing means is provided, and the accumulator chamber is connected to a pressure source via a direction control valve. 4. The material indexing device for a laser beam machine according to claim 3, wherein the pressing means is a fluid pressure cylinder. 4. The material indexing device for a laser beam machine according to claim 1, wherein a material loading detecting device for detecting material loading is provided on the material rotating member. The material loading detection device includes a signal detection ring that rotates together with the material rotation member on the material rotation member, and two signals provided on a face plate of a main body frame that contacts the signal detection ring at a wider interval than the notch groove. A detector, a contact that operates by attaching a material to the material rotating member, and an electric circuit provided between the two signal detectors and a power source. When the contact is ON, at least one of the contacts 6. The material indexing device for a laser beam machine according to claim 5, wherein the material loading is detected by conducting an electrical circuit between the signal detector and a power source. The contact includes a movable contact composed of a material contact member and a contact member, and a fixed contact that can contact the movable contact. The movable contact is pivotally supported on the material rotating member, and the movable contact is provided. An elastic machine that protrudes one side of the contact from the material support surface is provided on the movable contact, and a fixed contact with an air flow path at the center is provided on the other side of the movable contact so that the contact is not contacted. The material indexing device for a laser beam machine according to claim 6, wherein air is ejected from the fixed contact to the material support portion in a state.

Images