JP2021146370A - Spatter removal device of workpiece support of heat processing machine and workpiece support table - Google Patents

Abstract

To provide a spatter removal device of a workpiece support of a heat processing machine and a workpiece support table for removing spatter sealed to a workpiece support of a heat processing machine formed of carbon fiber.SOLUTION: A spatter removal device of a workpiece support 100 comprises a drive unit for applying impact or vibration to a long workpiece support 100 formed of carbon fiber, which is installed on a workpiece support table 20 in order to support a workpiece W to be heat-processed. At least one of end support bases that support the short side of the workpiece support 100, or an intermediate support base that supports the middle part of the workpiece support 100 in a long side direction is installed so as to be operable in a direction perpendicular to the long side of the indicated workpiece support.SELECTED DRAWING: Figure 3

Description

The present invention relates to a sputter removal device and a work support table for a work support of a heat processing machine.

Conventionally, a work support table of a heat processing machine such as a laser processing machine or a plasma processing machine has a plurality of plate-shaped work supports (work) as a support member for supporting the sheet metal (work) to be processed from the lower surface. Support members) are provided. The plurality of work supports are arranged side by side at predetermined intervals on the work support table with the plate surface perpendicular to the floor surface.

As one form of the work support described above, there is one made of metal and having continuous triangular protrusions formed at the upper end. When the work to be machined is placed on the work support table in which a plurality of such work supports are arranged, the protrusion at the upper end of each work support comes into contact with the lower surface of the work, and the work is point-supported.

Since the work is point-supported, the contact area between the work and the work support can be minimized, and welding of the work and the work support due to thermal processing, damage to the work support, and the like can be suppressed.

Japanese Unexamined Patent Publication No. 2001-314998

However, since both the work and the work support are made of metal, even if the contact area is suppressed, it is not possible to completely avoid wear and tear of the protrusions of the work support due to thermal processing.

Further, when the work support is made of metal, the spatter generated by thermal processing is welded to the work support. In order to remove this, it is necessary to peel off or scrape off the welded spatter, which causes a problem that a great deal of labor is required.

The present invention provides a spatter removal device and a work support table for a work support of a heat processing machine for removing spatter sealed on a work support of a heat processing machine made of carbon fiber. The purpose.

The present invention provides a drive unit that applies impact or vibration to a long work support made of carbon fiber, which is installed on a work support table to support a work to be heat-processed. Provided is a spatter removing device for a work support as a feature.

Further, the present invention has two end supports for supporting both short sides of a long work support made of carbon fiber, which supports the work to be heat-processed, and supports the ends. At least one of the pedestals provides a work support table for the thermal processing machine, which is operably installed in a direction parallel to or perpendicular to the floor surface.

According to the present invention, there is provided a spatter removal device and a work support table for a work support of a heat processing machine for removing spatter sealed on a work support of a heat processing machine made of carbon fiber. be able to.

It is an external perspective view which shows the laser processing machine which uses the sputter removal apparatus in one Embodiment. It is a front view which shows the shape of the work support 100 which performs a spatter removal process by a spatter removal apparatus in one Embodiment. (A) External perspective view of the voice coil exciter 60A, (b) Side view of the voice coil exciter 60A, (c) Side view of the piezo ultrasonic exciter 60B as the spatter removing device in one embodiment. , (D) It is a side view of the air cylinder impact exciter 60C. It is (a) top view and (b) side view of the first work support holding mechanism installed on the work support table 20 in one embodiment. It is a top view which shows the state when the lower end support base of the 1st work support holding mechanism installed on the work support table 20 in one Embodiment is given an impact by a hammer. It is a top view which shows the state when the lower end support base of the 1st work support holding mechanism installed on the work support table 20 in one Embodiment is shocked or vibrated by a linear actuator. It is a top view which shows the state when the shock or vibration of the same phase is applied by the linear actuator to the upper and lower end support bases of the 1st work support holding mechanism installed on the work support table 20 in one Embodiment. It is a top view which shows the state when the shock or vibration of the opposite phase is applied by the linear actuator to the upper and lower end support bases of the 1st work support holding mechanism installed on the work support table 20 in one Embodiment. The state when the intermediate portion of the first work support holding mechanism installed on the work support table 20 in one embodiment is held in a state where it hardly vibrates, and the lower end support base is impacted or vibrated by a linear actuator. It is a top view which shows. It is a side view which shows the state which installed the vibrator which used the piezo element on the support base of the 2nd work support holding mechanism installed on the work support table 20 in one Embodiment. It is (a) top view and (b) side view which shows the state which installed the linear actuator on the intermediate part support base of the 3rd work support holding mechanism installed on the work support table 20 in one Embodiment. When the work support 100 is linearized by the support base of the third work support holding mechanism installed on the work support table 20 in one embodiment, and the teeth of the fork member 110 are inserted into the gap of the work support 100. It is a top view which shows the state.

Hereinafter, a laser processing machine which is a heat processing machine using a sputter removing device for a work support used for a work support table according to one embodiment will be described with reference to the attached drawings.

The laser processing machine 1 according to the present embodiment performs cutting processing, and as shown in FIG. 1, a work support table 20 for installing a work W to be heat-processed is provided on the base 10. .. On the work support table 20, a plurality of work supports 100 that support the work W to be machined are arranged in the X direction. The material and shape of each work support 100 and the installation state on the work support table 20 will be described later.

The laser machine 1 includes a gate-shaped frame 30 arranged so as to straddle the work support table 20. The frame 30 has side frames 31, 32 and an upper frame 33.

A carriage 40 movable in the Y direction is provided in the upper frame 33. A laser head 41 that emits a laser is attached to the carriage 40. The laser head 41 is configured to move arbitrarily in the X and Y directions above the work W by moving the frame 30 in the X direction and the carriage 40 in the Y direction.

An NC device 50 for controlling the laser processing machine 1 is attached to the frame 30. The NC device 50 controls the laser processing machine 1 according to the processing data (NC data) for processing the work W. The NC device 50 is a control device that controls the laser processing machine 1.

The work W is cut by irradiating the work W with a laser while the laser head 41 moves in the X direction or the Y direction under the control of the NC device 50.

The work support 100 installed on the work support table 20 will be described. Each work support 100 is formed by cutting out a string-shaped carbon fiber, for example, a carbon fiber reinforced carbon composite material (C / C composite material) from a thin plate woven in a plain weave into a long shape. Plain weave is a weave in which fibers are crossed vertically and horizontally one by one. The carbon fiber weave may be a satin weave or an irregular weave, regardless of whether the fiber is woven in any structure, whether it is a satin weave or a twill weave. It doesn't matter.

The melting point of carbon fiber is 3550 ° C., which is much higher than the melting point of 1580 ° C. of a general metal work W. Therefore, by using carbon fiber as the material of the work support 100, it is possible to prevent welding of the work W and the work support 100 due to irradiation of the laser beam when the work W is cut.

As shown in FIG. 2, the work support 100 is continuously provided with triangular protrusions 101 at the upper end. When a plurality of such work supports 100 are arranged on the work support table 20 and the work W is placed on the work support table 20, the triangular protrusion 101 at the upper end of each work support 100 comes into contact with the lower surface of the work W. The work W is point-supported. Since the work W is point-supported, the probability that the laser beam hits the upper part of the work support 100 when the work W is cut is reduced, and the work support 100 is suppressed from being damaged.

Conventionally, a work support in which triangular protrusions are continuously provided at the upper end of a metal plate has been used, but such a work support of a metal plate has a melting point equivalent to that of the work W and is cut. The spatter generated in the above is welded and deposited.

However, the work support 100 of the present embodiment is formed of carbon fibers having a high melting point as described above, and is not welded to the work support even if spatter is generated and deposited. Further, since the C / C composite material is reinforced by impregnating the woven carbon fibers with various substances, elasticity is generated by forming the C / C composite material into a thin plate shape. Utilizing this, when spatter is deposited on the work support, the spatter can be easily removed by applying impact or vibration to the work support and elastically propagating the spatter. The life of the work support 100 can be extended by appropriately removing the spatter accumulated on the work support 100.

A method of applying an impact or vibration to the work support 100 in order to remove spatter accumulated on the work support 100 will be described below using an example.

(1) Method of exciting the work support 100 with a handy type exciter A case where spatter accumulated on the work support 100 is removed by using the handy type exciter as a spatter removing device will be described. Examples of the handy type exciter include the voice coil exciter 60A shown in FIGS. 3 (a) and 3 (b), the piezo ultrasonic exciter 60B shown in (c), or the air cylinder shown in (d). There is an impact exciter 60C.

The voice coil exciter 60A of FIGS. 3A and 3B is attached to a handle portion 61A, a diaphragm 62 extending from the handle portion 61A, and a diaphragm 62, and is attached to the diaphragm 62. It has a voice coil actuator 63 as a driving unit that electrically vibrates the.

When using this voice coil exciter 60A, the operator grasps the handle portion 61A and brings the tip of the diaphragm 62 into contact with the work support 100 to drive the voice coil actuator 63 while maintaining the contact state. Vibration is applied to the work support 100 by performing the operation of making the work support 100. By performing this work for each work support 100, spatter accumulated on each work support 100 can be removed.

The piezo ultrasonic exciter 60B of FIG. 3C has a handle portion 61B and a piezo diaphragm 64 as a driving portion provided extending from the handle portion 61B. The piezo diaphragm 64 is configured by using a piezo element, and emits ultrasonic vibration when a voltage is applied.

When using this piezo ultrasonic vibrator 60B, the operator grasps the handle portion 61B and brings the tip of the piezo diaphragm 64 into contact with the work support 100 to apply piezo ultrasonic waves while maintaining the contact state. By performing an operation of applying a voltage to the diaphragm 60B, vibration is applied to the work support 100. By performing this work for each work support 100, spatter accumulated on each work support 100 can be removed.

The air cylinder impact exciter 60C of FIG. 3D has a handle portion 61C and an air cylinder 65 as a drive unit installed at the tip of the handle portion 61C. The air cylinder 65 has a piston 651 that reciprocates with air pressure.

When using this air cylinder impact exciter 60C, the operator grasps the handle portion 61C and brings the tip of the piston 651 of the air cylinder 65 close to the work support 100 to operate the piston 651 of the air cylinder 65. By performing the operation of causing the piston 651 to collide with the work support 100, vibration is applied. By performing this work for each work support 100, spatter accumulated on each work support 100 can be removed.

These handy type exciters have a simple structure and are easy to be compact and lightweight, so that they are highly convenient for practical use. Further, the work support 100 formed of the C / C composite material generates elasticity, and the vibration given at a predetermined position propagates to the peripheral portion. Therefore, when using a handy type exciter, one work is used. The number of work locations for the support 100 is small, and the spatter removal work can be performed efficiently.

(2) Vibration method to the work support 100 by the first work support holding mechanism As shown in the top view of FIG. 4A as the first work support holding mechanism on the upper surface of the work support table 20. The lower end support base 21 that collectively supports the short sides of the lower ends of the plurality of work supports 100, the upper end support base 22 that collectively supports the short sides of the upper ends, and the intermediate portion are collectively supported. 1 Install the intermediate support base 23.

The lower end support base 21 and the upper end support base 22 are provided with a plurality of slits 211 and 221 having a width corresponding to the thickness of the work support 100, respectively, and the end portion of the work support 100 is inserted.

Further, the lower end support base 21 and the upper end support base 22 are connected to the left end of the frame of the work support table 20 by the springs 24A and 25A, respectively, and the right end of the frame of the work support table 20 by the springs 24B and 25B, respectively. Connected to. Further, the lower end support base 21 and the upper end support base 22 are each installed on the slide guide 26 installed on the work support table 20 as shown in the side view of FIG. 4 (b). The slide guide 26 is a member that can slide in the left-right direction parallel to the upper surface of the work support table 20 and perpendicular to the long side of the work support 100 to be supported.

(2-1) Manual Vibration Method As shown in FIG. 5, a plurality of widths sufficiently wider than the thickness of the work support 100 are provided on the first intermediate support base 23 of the first work support holding mechanism described above. Slit 231 is provided to support the intermediate portion of the work support 100 in a state where it can vibrate in the left-right direction. Then, when the operator applies an impact to at least one of the above-mentioned end support bases 21 and 22 using a hammer 70 or the like, the corresponding end support bases 21 and 22 are slid and held in the left-right direction. Vibration is applied to each work support 100. For example, by giving an impact to the lower end support base 21, the work support 100 vibrates in the left-right direction with the upper end fixed and the lower end vibrates in the left-right direction, as shown by the thin line arrows in FIG. Sputter accumulated on the work support 100 can be removed.

(2-2) Vibration method using a linear actuator By installing a linear actuator on at least one of the end support bases 21 and 22 of the first work support holding mechanism described above and operating it in the left-right direction. The corresponding end support bases 21 and 22 are slid in the left-right direction to apply an impact or vibration to each of the held work supports 100.

FIG. 6 shows a first configuration example of the first work support holding mechanism using a linear actuator. In this example, the first intermediate portion support base 23 is provided with a plurality of slits 231 having a width sufficiently wider than the thickness of the work support 100, and the intermediate portion of the work support 100 is supported in a state where it can vibrate in the left-right direction. Then, the linear actuator 27 is installed only on the lower end support base 21.

By driving the linear actuator 27 with the first work support holding mechanism configured in this way, the lower end support base 21 is slid in the left-right direction, and impact or vibration is applied to each of the held work supports 100. Add. As a result, as shown by the thin arrow in FIG. 6, the work support 100 vibrates in the left-right direction with the upper end portion fixed and the intermediate portion and the lower end portion vibrating in the left-right direction, and removes spatter accumulated on each work support 100. be able to. The impact here is an operation generated with inertial force when the linear actuator is started and stopped.

A second configuration example of the first work support holding mechanism using a linear actuator is shown in FIG. In this example, the first intermediate portion support base 23 is provided with a plurality of slits 232 having a width corresponding to the thickness of the work support 100, and the intermediate portion of the work support 100 is inserted and supported. The linear actuators 27 and 28 are installed on both of the 22. The width of the slit 232 is formed in such a size that the supporting portion hardly vibrates in the left-right direction even when a force is applied to the supporting work support 100.

In the first work support holding mechanism configured in this way, the linear actuators 27 and 28 slide the end support bases 21 and 22 in the left-right direction by vibrations of the same phase, and each work support held is held. Apply shock or vibration to 100. As a result, as shown by the thin line arrows in FIG. 7, the work support 100 vibrates in the left-right direction at both the upper and lower ends with the intermediate portion fixed, and the spatter accumulated on each work support 100 can be removed. can.

Further, in the first work support holding mechanism configured in this way, as shown by the thin line arrows in FIG. 8, the end support bases 21 and 22 are slid by the linear actuators 27 and 28 with vibrations of opposite phases. May be good. At this time, it is not necessary to fix the work support 100 with the first intermediate portion support base 23, and the work support 100 may be supported by a plurality of slits 231 having a width sufficiently wider than the thickness of the work support 100.

A third configuration example of the first work support holding mechanism using a linear actuator is shown in FIG. In this example, the first intermediate portion support base 23 described above is provided with a plurality of slits 232 having a width corresponding to the thickness of the work support 100, and the intermediate portion of the work support 100 is inserted and supported to support the lower end portion support base. The linear actuator 27 is installed only in 21. The width of the slit 232 is formed in a size that allows vibration waves to propagate on the work support 100, although the support portion hardly vibrates in the left-right direction even when a force is applied to the supporting work support 100. ing.

By driving the linear actuator 27 with the first work support holding mechanism configured in this way, the lower end support base 21 is slid in the left-right direction, and vibration is applied to each of the held work supports 100. As a result, as shown by the thin arrow in FIG. 9, the deflection generated by applying vibration to the lower end portion of the work support 100 is amplified and vibrates between the intermediate portion and the upper end portion, and each work support 100 is vibrated. It is possible to remove the spatter accumulated in.

By using the first work support holding mechanism as described above, the plurality of work supports 100 installed on the work support table 20 can be vibrated at the same time to efficiently perform the spatter removal work. In addition, it is possible to automate the spatter removal work by controlling the vibration operation of the work support 100 with the control device, and even when performing continuous laser machining work, the spatter removal work is appropriately executed. The laser machine can be kept in good condition.

(3) Vibration method to the work support 100 by the second work support holding mechanism As the second work support holding mechanism on the upper surface of the work support table 20, the lower ends of a plurality of work supports 100 are short. A lower end support base 21 that supports the sides, an upper end support base 22 that supports the short side of the upper end, and a first intermediate support base 23 that supports the intermediate portion are installed. In addition, as shown in FIG. 10, a plurality of vibrators 80 using a piezo element are installed between at least one of these support bases 21 to 23 and the work support table 20.

Then, the vibrator 80 is generated with ultrasonic vibration having a frequency equivalent to the natural frequency of the work support 100 in the left-right direction or the up-down direction, and the corresponding support bases 21 to 23 are generated on the upper surface of the work support table 20. It is vibrated in the left-right direction parallel to the above or in the up-down direction perpendicular to the upper surface of the work support table 20. As a result, the vibration is propagated to the work support 100 supported by the supports 21 to 23, and the accumulated spatter can be removed.

By using the second work support holding mechanism as described above, the adhesion state of spatter accumulated on the work support 100 can be changed depending on the processing conditions when using the laser processing machine and the material of the work W to be processed. Even if they are different, reliable spatter removal work can be performed by changing the vibration direction and frequency.

(4) Vibration method to the work support 100 by the third work support holding mechanism As shown in the upper surface view of FIG. 11A as the third work support holding mechanism on the upper surface of the work support table 20. A second intermediate portion support 91 and a third intermediate portion support 92 that support two different intermediate portions of the plurality of work supports 100 are installed. As shown in FIG. 11B, these intermediate support bases 91 and 92 are parallel to the floor surface due to the rotation of the support rollers 93A, 93B, 94A, and 94B installed on the work support table 20, respectively. It is installed in a state where it can operate in the left-right direction. Further, linear actuators 97 and 98 are installed at the right ends of these intermediate support bases 91 and 92 by toggle mechanism members 95 and 96.

Then, the linear actuators 97 and 98 are driven, and the intermediate portion support bases 91 and 92 are operated in the same phase or the opposite phase by the toggle mechanism members 95 and 96 to give an impact when the stroke is stopped, or the intermediate portion support base is given. By colliding 91 and 92 with the inside of the frame of the work support table 20, an impact or vibration is applied to each of the held work supports 100. As a result, the work support 100 vibrates, and the accumulated spatter can be removed. The number of the intermediate portion support bases described above is not limited to two, and three or more may be installed at different locations in the intermediate portion of the work support 100.

In the above-described third work support holding mechanism, the operating direction of the work support 100 by the linear actuators 97 and 98 can be adjusted according to the mounting state of the toggle mechanism members 95 and 96. It can be installed so as to fit inside the frame of the support table 20, which is practically useful.

On the other hand, the work support 100 is installed on the work support table 20 in a state of being curved in the long side direction, so that when the work W is linearly cut, it is placed on the upper portion of the work support 100. It is possible to avoid continuous irradiation of the laser beam, suppress spatter accumulation and breakage, and extend the life of the work support 100.

Therefore, when performing laser machining with the laser machining machine using the above-mentioned third work support holding mechanism, as shown by the arrow in FIG. 11A, the second intermediate portion support base 91 and the third intermediate portion support are supported. Damage to the work support 100 can be suppressed by performing the thermal machining work in a state where the work support 100 is curved in an S shape by moving the table 92 in a different direction.

Further, when loading and unloading the work W onto the work support 100, as shown in FIG. 12, the work is performed using the fork member 110 having teeth 111 to be inserted into the gaps between the work supports 100. .. At that time, if the work support 100 is curved, the teeth 111 of the fork member 110 and the work support 100 come into contact with each other, and the work W cannot be normally carried in and out.

Therefore, when the work W is carried in and out, the positions of the moved second intermediate portion support base 91 and the third intermediate portion support base 92 are returned, and the work support 100 is straightened as shown in FIG. By setting the state, the work W can be appropriately carried in and out.

Further, the NC device may be equipped with a function as a support base position adjusting device for controlling the operation of the intermediate support bases 91 and 92. The NC device adjusts the positions of the intermediate support bases 91 and 92 so that the work support 100 is in a straight line when the work W is carried in or out on the work support 100 by the function, and the work W When performing the heat processing work of the above, the work support 100 may be adjusted so as to be in a curved state.

The present invention is not limited to the present embodiment described above, and various modifications can be made without departing from the gist of the present invention.

1 Laser processing machine 10 Base 20 Work support table 21 Lower end support base 22 Upper end support base 23 First intermediate part support base 24A, 24B, 25A, 25B Spring 26 Slide guide 27, 28 Linear actuator 30 frame 31, 32 Side frame 33 Upper frame 40 Carriage 41 Laser head 50 NC device 60A Voice coil shaker 60B Piezo Ultrasonic shaker 60C Air cylinder Impact shaker 61A, 61B, 61C Handle part 62 Diaphragm 63 Voice coil actuator 64 Piezo Diaphragm 65 Air Cylinder 70 Hammer 80 Transducer 91 2nd Intermediate Support Stand 92 3rd Intermediate Support 93A, 93B, 94A, 94B Support Roller 95, 96 Toggle Mechanism Member 97, 98 Linear Actuator 100 Work Support 101 Protrusion 110 Fork member 111 Tooth 211,221,231,232 Slit 651 Piston

Claims (8)

A long work support made of carbon fiber, which is installed on a work support table to support a work to be heat-processed, is provided with a drive unit that applies impact or vibration. A spatter removal device for the workpiece support of a processing machine. The work support table has two end supports that support both short sides of the work support, and at least one of the end supports is parallel to the upper surface of the work support table. Or it is installed so that it can operate in the vertical direction,
The work support of the heat processing machine according to claim 1, wherein the drive unit applies an impact or vibration to the work support by operating an operably installed end support base. Spatter removal device. The spatter of the work support of the heat processing machine according to claim 1 or 2, wherein the work support table has an intermediate portion support base that supports an intermediate portion in the long side direction of the work support. Removal device. The intermediate portion support base is installed in a state of supporting the intermediate portion in the long side direction of the work support and in a state of being able to operate in a direction perpendicular to the long side of the work support.
The spatter removal device for a work support of a heat processing machine according to claim 3, wherein the drive unit applies an impact or vibration to the work support by operating the intermediate support base. A plurality of the intermediate portion support bases are installed at different locations in the intermediate portion in the long side direction of the work support.
The spatter removing device for a work support of a heat processing machine according to claim 3 or 4, wherein the drive unit operates the plurality of intermediate portion supports. The spatter removal device for a work support of a heat processing machine according to any one of claims 1 to 5, wherein the drive unit is configured by using a linear actuator or a piezo element. It has two end supports each supporting both short sides of a long work support made of carbon fiber that supports the work to be heat-processed, and at least one of the end supports is A work support table for a thermal processing machine characterized by being operably installed in a direction parallel to or perpendicular to the floor surface. An intermediate part that supports the middle part of a long work support made of carbon fiber in the long side direction, which is installed to support the work to be heat-processed, in a state in which it can move in a direction parallel to the floor surface. With the club support
When the work to be heat-processed is carried in or out onto the work support, the position of the intermediate support base is adjusted so that the work support is in a straight line state, and the work is heat-processed. The work support table of the heat processing machine is provided with a support base position adjusting device for adjusting the position of the intermediate portion support base so that the work support is in a curved state.

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