Material support device for laser cutting machine

Abstract

The present invention discloses a material support device for a laser cutting machine, which relates to the technical field of laser cutting machines, and comprises a main body, on which a first sword bar, a second sword bar and a driving mechanism are arranged; the first sword bar is limitedly connected to the main body; the second sword bar is located on one side of the first sword bar; the driving mechanism has a first stroke and a second stroke, in the first stroke, the driving mechanism drives the second sword bar to move downward and move to the other side of the first sword bar; in the second stroke, the driving mechanism drives the second sword bar to move upward and reset; in the process of the second sword bar moving upward or downward, the first sword bar and the second sword bar fit each other. The material support device for a laser cutting machine provided by the present invention, by arranging the first sword bar and the second sword bar, the two can be driven by the driving mechanism to move to the upper side alternately and support the material.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting machines, and in particular to a material supporting device for a laser cutting machine. Background Art

[0002] Laser cutting machine is a kind of equipment that uses laser beam to cut materials. When using laser cutting machine, the material is generally supported by sword bars. Some slag will be generated during the cutting process. These slags will splash into the waste trolley under the workbench, while some slag will stick to the sword bars. Long-term use will affect the accuracy of material cutting.

[0003] For example, the application announcement number is CN 115781007A, the application announcement date is March 14, 2023, and the authorized patent is named "A laser cutting machine workbench with automatic slag removal", which includes a workbench, sword bars and a first scraper. Several sword bars are arranged on the inner side of the workbench with equal spacing, so that the rotation of the sword bars is simple and efficient. By turning the sword bars to the same plane, all sword bars can be deslagging at the same time.

[0004] After long-term use, the surface temperature of the sword bars will rise, which will increase its surface activity and make the slag more easily adsorbed by the support bars, which will have a certain impact on the use of the sword bars. Summary of the invention

[0005] The purpose of the present invention is to provide a material support device for a laser cutting machine to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A material support device for a laser cutting machine comprises a main body, on which is provided:

[0008] A first sword fence bar, which is limitedly connected to the main body;

[0009] A second sword bar, located on one side of the first sword bar;

[0010] The driving mechanism has a first stroke and a second stroke. In the first stroke, the driving mechanism drives the second sword bar to move downward and to the other side of the first sword bar; in the second stroke, the driving mechanism drives the second sword bar to move upward and reset; in the process of the second sword bar moving upward or downward, the first sword bar and the second sword bar fit each other.

[0011] In the above-mentioned material support device for a laser cutting machine, the driving mechanism drives the first sword bar and the second sword bar to move vertically and in opposite directions.

[0012] The above-mentioned material support device for a laser cutting machine, the driving mechanism includes a first connecting block fixed on the first sword bar and a second connecting block limited on the second sword bar, the first connecting block is fixed with a first rack, the second connecting block is fixed with a second rack, the main body is rotatably connected with a gear, the first rack and the second rack are both engaged with the gear, and also includes a driving member for driving the first connecting block to move vertically.

[0013] In the above-mentioned material support device for a laser cutting machine, a through groove is constructed on the second connecting block, and limiting columns are constructed on both sides of the through groove. The spacing between the two limiting columns is equal to the thickness of the first sword grid bar, and the second sword grid bar is constructed with limiting holes adapted to the limiting columns.

[0014] The above-mentioned material support device for a laser cutting machine also includes a locking mechanism, which is used to lock the second sword grid bar on the corresponding limit column.

[0015] The above-mentioned material support device for a laser cutting machine, the locking mechanism includes a clamping block rotatably connected to the second connecting block, a torsion spring is arranged between the clamping block and the second connecting block, a wedge surface and a clamping hook are constructed on the clamping block, and a clamping portion is constructed on the second sword grid bar.

[0016] The above-mentioned material support device for a laser cutting machine also includes an unlocking mechanism, and when the second sword grid bar slides along the limiting column, the unlocking mechanism releases the locking mechanism from locking the second sword grid bar.

[0017] In the above-mentioned material supporting device for a laser cutting machine, the unlocking mechanism includes a connecting rod slidably connected to the second connecting block, a first spring is arranged between the connecting rod and the second connecting block, a first protrusion is constructed on the connecting rod, and a second protrusion is constructed on the clamping block.

[0018] The above-mentioned material support device for a laser cutting machine also includes a switching mechanism, which is used to switch the second sword grid bar from one limiting column to another limiting column.

[0019] The above-mentioned material support device for a laser cutting machine, the switching mechanism includes a square bar slidably connected to the main body, a second spring is arranged between the square bar and the main body, a switching block is slidably connected to the square bar, a card slot adapted to the card connection portion is constructed on the top of the switching block, a third spring is arranged between the switching block and the square bar, and a resistance plate is constructed on the main body.

[0020] In the above technical scheme, the present invention provides a material support device for a laser cutting machine. By setting a first sword bar and a second sword bar, the two can be driven by a driving mechanism to alternately move upward and support the material, so as to avoid the temperature of the surface of the first sword bar or the second sword bar from rising to a certain level. In the process of alternating between the first sword bar and the second sword bar, the two are in contact with each other and move relative to each other, so that the two can scrape off the slag on their respective surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic structural diagram of a driving mechanism provided in yet another embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of a gear provided by another embodiment of the present invention;

[0025] Figure 4 A cross-sectional view of the structure of a second connecting block provided in another embodiment of the present invention;

[0026] Figure 5 The embodiment of the present invention provides Figure 4 The enlarged structural diagram at A in the middle;

[0027] Figure 6 A schematic diagram of the structure of a switching mechanism provided in an embodiment of the present invention;

[0028] Figure 7 A structural side view of a switching mechanism provided in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Main body; 2. First sword fence bar; 3. Second sword fence bar; 4. First connecting block; 5. Second connecting block; 6. First rack; 7. Second rack; 8. Gear; 9. First slide groove; 10. Second slide groove; 11. Limiting column; 12. U-shaped plate; 13. Block; 14. Wedge surface; 15. Snap-on hook; 16. Snap-on part; 17. Connecting rod; 18. First spring; 19. First protrusion; 20. Second protrusion; 21. Square bar; 22. Second spring; 23. Switching block; 24. Third spring; 25. Contact plate; 26. Slide rod. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Reference Figure 1-7 An embodiment of the present invention provides a material support device for a laser cutting machine, including a main body 1, on which a first sword bar 2, a second sword bar 3 and a driving mechanism are arranged; the first sword bar 2 is limitedly connected to the main body 1; the second sword bar 3 is located on one side of the first sword bar 2; the driving mechanism has a first stroke and a second stroke, in the first stroke, the driving mechanism drives the second sword bar 3 to move downward and to the other side of the first sword bar 2; in the second stroke, the driving mechanism drives the second sword bar 3 to move upward and reset; in the process of the second sword bar 3 moving upward or downward, the first sword bar 2 and the second sword bar 3 fit each other.

[0033] Specifically, the sword bar is a commonly used material support structure in the laser cutting machine. It is a strip structure with a toothed support portion. Generally, multiple horizontal arrays are arranged on the main body 1 to stably support the material. After the laser cutting machine is used for a long time, the temperature of the sword bar will increase, which will increase its surface activity, making the slag generated during the cutting process more easily adsorbed by the support bar, thereby increasing the difficulty of subsequent cleaning of the sword bar. The core innovation of the embodiment of the present invention is that after the material processing on the main body 1 is completed, the first sword bar 2 and the second sword bar 3 are driven by the driving mechanism to alternately support the material upward, so as to avoid the temperature of the surface of the first sword bar 2 or the second sword bar 3 from rising to a certain level, so as to minimize the amount of slag adsorbed on the surface of the sword bar; in the process of the driving mechanism running the first stroke and the second stroke to drive the first sword bar 2 and the second sword bar 3 to alternate (the first stroke and the second stroke of the driving mechanism can be driven by the electric slide rail in the prior art to make the second sword bar 3 run along the track), the second sword bar 3 is successively located on both sides of the first sword bar 2, and the two keep in contact and move relative to each other during the alternating process, so that the two can mutually and comprehensively remove the slag on their respective surfaces, so as to comprehensively clean themselves in the process of alternating use of the first sword bar 2 or the second sword bar 3, and try to avoid a large amount of slag attached to the sword bar to affect the use of the laser cutting machine.

[0034] An embodiment of the present invention provides a material support device for a laser cutting machine. By setting a first sword bar 2 and a second sword bar 3, the two can be driven by a driving mechanism to alternately move upward and support the material, thereby trying to avoid the temperature of the surface of the first sword bar 2 or the second sword bar 3 from rising to a certain level; during the alternation of the first sword bar 2 and the second sword bar 3, the two are in contact with each other and move relative to each other, so that the two can scrape off the slag on their respective surfaces.

[0035] In another embodiment provided by the present invention, further, the driving mechanism drives the first sword bar 2 and the second sword bar 3 to move vertically and in the opposite direction. Specifically, the height at which the laser cutting machine supports the material is generally fixed, so the driving mechanism drives the first sword bar 2 to move synchronously and in the opposite direction in the process of driving the second sword bar 3 to move, that is, when the driving mechanism drives the second sword bar 3 to be at the bottom of its stroke, the first sword bar 2 is at the top of its stroke and supports the material, and vice versa, when the first sword bar 2 is at the bottom of its stroke, the second sword bar 3 is at the top of its stroke and supports the material, and the tops of the first sword bar 2 and the second sword bar 3 are at the same height, so that the material can be supported at the same height when the first sword bar 2 and the second sword bar 3 are used alternately.

[0036] Preferably, the driving mechanism includes a first connecting block 4 fixed on the first sword bar 2 and a second connecting block 5 limited on the second sword bar 3, the first connecting block 4 is fixed with a first rack 6, the second connecting block 5 is fixed with a second rack 7, the main body 1 is rotatably connected with a gear 8, the first rack 6 and the second rack 7 are both engaged with the gear 8 and are disposed on opposite sides of the gear 8, and also includes a driving member for driving the first connecting block 4 to move vertically. Specifically, the main body 1 is vertically constructed with a first slide groove 9 and a second slide groove 10, the first connecting block 4 is slidably connected in the first slide groove 9, and the second connecting block 5 is slidably connected in the second slide groove 10; the driving member can adopt a linear driving structure in the prior art, such as a screw structure or a hydraulic rod structure, to drive the first connecting block 4 to slide along the first slide groove 9, which is a prior art and is not shown in the figure; in the process of sliding of the first connecting block 4, the first rack 6 is driven to move synchronously, thereby driving the gear 8 to rotate and then driving the second rack 7 and the second connecting block 5 to slide along the second slide groove 10 through the gear 8. Since the second connecting block 5 is limited on the second sword grid bar 3, the driving member can drive the first sword grid bar 2 and the second sword grid bar 3 to move synchronously and in opposite directions during operation.

[0037] In another embodiment provided by the present invention, further, a through groove is constructed on the second connecting block 5, and limiting columns 11 are constructed on both side walls of the through groove, the spacing between the two limiting columns 11 is equal to the thickness of the first sword grid bar 2, and the second sword grid bar 3 is constructed with limiting holes adapted to the limiting columns 11. Specifically, the through groove divides the second connecting block 5 into two parts, and the two parts are connected by a U-shaped plate 12 (the first rack 6 and the second rack 7 are staggered with the U-shaped plate 12, that is, they are not on the same plane), and two second slide grooves 10 are constructed on the main body 1 for the two parts of the second connecting block 5 to slide, and the second sword grid bar 3 is connected to the second connecting block 5 through the limiting holes and the limiting columns 11; when the first sword grid bar 2 slides to the top of its stroke and supports the material, the second sword grid bar 3 is at the bottom of its stroke and is limited on a limiting column 11, and ... second sword grid bar 3 is at the bottom of its stroke and is limited on a limiting column 11, the second sword grid bar 3 is at the bottom of its stroke and is limited on a limiting column 11. When a sword bar 2 slides downward, it can pass between the two limit columns 11, and when the first sword bar 2 and the second sword bar 3 move relative to each other, the two can scrape off the slag on each other's surface until the two exchange positions, and the second sword bar 3 moves to another limit column 11, so as to scrape off the slag on the other side of the first sword bar 2 and the second sword bar 3 in the subsequent alternating position process; during the vertical movement of the second connecting block 5, the second sword bar 3 switches between the two limit columns 11 to complete the first stroke and the second stroke of the driving mechanism.

[0038] In another embodiment provided by the present invention, further, a locking mechanism is included, which is used to lock the second sword fence bar 3 on the corresponding limit column 11. Specifically, when the second sword fence bar 3 moves from one limit column 11 to another limit column 11, the position of the second sword fence bar 3 is locked by the locking mechanism, so as to avoid the position of the second sword fence bar 3 from being offset as much as possible, and to avoid affecting the relative movement of the first sword fence bar 2 and the second sword fence bar 3 as much as possible.

[0039] Preferably, the locking mechanism includes a clamping block 13 rotatably connected to the second connecting block 5, a torsion spring is arranged between the clamping block 13 and the second connecting block 5, a wedge surface 14 and a clamping hook 15 are constructed on the clamping block 13, the wedge surface 14 is the outer side surface of the clamping hook 15, and a clamping portion 16 is constructed on the second sword bar 3. Specifically, the torsion spring is used to force the block 13 to fit the top wall or bottom wall of the second connection block 5 as a whole. At this time, the wedge surface 14 is at the end of the block 13 away from its hinge point, that is, the wedge block is facing the other limit column 11. In the process of the second sword fence bar 3 moving to be installed on the corresponding limit column 11, the clamping part 16 of the second sword fence bar 3 will resist the wedge surface 14 of the block 13 to force the block 13 to rotate to the side away from the second connection block 5, until the second sword fence bar 3 is completely moved to the corresponding limit column 11, the clamping part 16 passes over the wedge surface 14 and moves to the position of the clamping hook 15. At this time, the block 13 is reset to the position of fitting the second connection block 5 under the action of the torsion spring, so that the second sword fence bar 3 can be locked on the corresponding limit column 11 by the clamping hook 15 of the block 13. The advantage of such a setting is that when the second sword fence bar 3 moves to the corresponding limit column 11, the second sword fence bar 3 is directly clamped and locked by the passive clamping structure, which is more convenient. Four groups of locking mechanisms are symmetrically arranged, that is, two groups of locking mechanisms are arranged on the same side of the second connecting block 5, and the two groups of locking mechanisms are respectively located at the upper and lower sides of the second fence bar 3, so as to stably lock the second fence bar 3.

[0040] Furthermore, an unlocking mechanism is also included. When the second sword fence bar 3 slides along the limiting column 11, the unlocking mechanism releases the lock of the second sword fence bar 3 by the locking mechanism. Specifically, when the second sword fence bar 3 moves to the top or bottom of its travel, the position of the second sword fence bar 3 needs to be switched, and for this purpose, the lock of the second sword fence bar 3 needs to be released. There are two sets of unlocking mechanisms. When the second connecting block 5 moves to the top or bottom of its travel, the corresponding unlocking mechanism operates to unlock the locking mechanism. The two sets of unlocking mechanisms are respectively located on both sides of the second connecting block 5, that is, one set of unlocking mechanisms is used to unlock the two sets of locking mechanisms on the same side.

[0041] Preferably, the unlocking mechanism comprises a connecting rod 17 slidably connected to the second connecting block 5, a first spring 18 is arranged between the connecting rod 17 and the second connecting block 5, a first protrusion 19 is constructed on the connecting rod 17, and a second protrusion 20 is constructed on the block 13. Specifically, an active cavity connected to the outside is constructed in the second connecting block 5, the connecting rod 17 slides vertically in the active cavity, and the connecting rod 17 is constructed in a "Z" shape as a whole, one end of which extends out of the second connecting block 5 through the active cavity, and the other end abuts against one side of a block 13 (a side of a block 13 close to the limiting column 11); the two ends of the first spring 18 are respectively fixed to the connecting rod 17 and the inner wall of the active cavity, and the first spring 18 can force the connecting rod 17 to move to the outside of the active cavity; the second protrusion 20 is constructed at one end of the block 13 away from the wedge surface 14, and the first protrusion 19 is located on the side of the second protrusion 20 away from the limiting column 11 (the first spring 18 forces the first protrusion 19 to move away from the corresponding second protrusion 20). When it is necessary to unlock the two sets of locking mechanisms on the same side, press the connecting rod 17 to move it into the active cavity, so that the connecting rod 17 can stretch the first spring 18 and resist one block 13, so that one block 13 rotates to the side away from the second connecting block 5, and at the same time, the first protrusion 19 on the connecting rod 17 will squeeze the second protrusion 20 on the other block 13, thereby forcing the other block 13 to rotate synchronously to the side away from the second connecting block 5, so that the clamping hooks 15 of the two blocks 13 on the same side are disengaged from the clamping parts 16 of the second sword grid bar 3, thereby releasing the lock of the second sword grid bar 3; with such a configuration, the lock of the second sword grid bar 3 can be released by simply pressing, and since the two unlocking mechanisms correspond to the two ends of the stroke of the second connecting block 5 respectively, the unlocking mechanisms on both sides are rotationally symmetrically arranged for easy operation.

[0042] Furthermore, a switching mechanism is included, which is used to switch the second sword fence bar 3 from one limiting column 11 to another limiting column 11. After the second sword fence bar 3 is unlocked, the second sword fence bar 3 can be moved from one limiting column 11 to another limiting column 11 through the switching mechanism, thereby completing the switching of the position of the second sword fence bar 3.

[0043] Preferably, the switching mechanism comprises a square bar 21 slidably connected to the main body 1, a second spring 22 is arranged between the square bar 21 and the main body 1, a switching block 23 is slidably connected to the square bar 21, a card slot adapted to the card connection portion 16 is configured at the top of the switching block 23, a third spring 24 is arranged between the switching block 23 and the square bar 21, and a contact plate 25 is configured on the main body 1. Specifically, two groups of switching mechanisms are provided, and the two groups of switching mechanisms are respectively arranged on the upper and lower sides of the main body 1; a through hole is configured on the main body 1, a sliding rod 26 is vertically fixed on one side of the square bar 21, and the sliding rod 26 is slidably connected in the through hole, the second spring 22 is sleeved on the sliding rod 26, and the two ends are respectively fixed to the main body 1 and the square bar 21, and the square bar 21 can be forced to approach the second connecting block 5 by the second spring 22, and an adapting hole is configured on the switching block 23 for sliding along the square bar 21, and the adapting hole and the square bar 21 are both configured in a square shape, so that the switching block 23 can remain vertical and not during the sliding process. Angle deviation occurs; the switching block 23 and the card block 13 are staggered in the length direction of the second sword fence bar 3, that is, there will be no position interference between the two when the second connecting block 5 is in operation; the square bar 21 corresponds to the position of the connecting rod 17, so that the two will conflict with each other when the second connecting block 5 is in operation; a connecting groove is constructed along the axial direction of the square bar 21, and a connecting block (not shown) is constructed on the switching block 23 and can slide along the connecting groove. The third spring 24 is arranged in the connecting groove, and its two ends are respectively fixed to the connecting block and the inner wall of the connecting groove, so as to force the switching block 23 to move to one side of the square bar 21 through the third spring 24; Figure 6 As shown, when the second connecting block 5 moves downward, the second sword grid bar 3 is locked on the limiting column 11 on the left, and the third spring 24 forces the switching block 23 to move to the left, so that the clamping portion 16 corresponds to the position of the clamping slot when the second connecting block 5 moves downward. In the process of the second connecting block 5 moving downward, the connecting rod 17 first contacts the corresponding square bar 21, and the second spring 22 is compressed and gradually increases the squeezing force on the square bar 21 until the squeezing force of the second spring 22 on the square bar 21 is greater than the pulling force of the first spring 18 on the connecting rod 17. The square bar 21 squeezes the connecting rod 17 and makes it enter the active cavity, thereby releasing the locking of the second sword grid bar 3 by the two clamping blocks 13 on the left. , and during the unlocking process, the clamping portion 16 synchronously enters the corresponding clamping slot, so as to temporarily clamp the second sword fence bar 3 through the clamping slot when the second sword fence bar 3 is unlocked (when the connecting rod 17 abuts against the top wall of the active cavity, the clamping block 13 releases the lock on the second sword fence bar 3, and the clamping portion 16 completely enters the clamping slot. At this time, the relative positions of the second connecting block 5 and the square bar 21 are restricted by the second spring 22, and the switching block 23 can move along the square bar 21 and drive the second sword fence bar 3 to move to another limiting column 11); then the second connecting block 5 continues to move downward until the switching block 23 abuts against the abutting plate 25 (the bottom of the switching block 23 is constructed with an inclined surface, Figure 6In the embodiment, the left side of the contact plate 25 is higher than the right side, so that when the second connecting block 5 moves downward, the switching block 23 is forced to move along the square bar 21. The contact plate 25 and the square bar 21 are staggered in the axial direction of the second sword grid bar 3). The second connecting block 5 continues to move, which will drive the switching block 23 to squeeze the third spring 24 along the square bar 21. At this time, the switching block 23 will drive the second sword grid bar 3 to move to another limiting column 11 through the card slot, so as to switch the position of the second sword grid bar 3. After the position of the second sword grid bar 3 is switched, the corresponding locking mechanism will operate to lock the second sword grid bar 3. At this time, the second sword grid bar 3 is switched and moves to the bottom of its stroke. At the same time, the first sword grid bar 3 is 2 is at the top of its stroke to support the material; when the first sword grid bar 2 and the second sword grid bar 3 move relative to each other, the second connecting block 5 moves upward, at which time the switching block 23 is not resisted by the contact plate 25, but it is clamped by the clamping portion 16, so that the switching block 23 is still on the right side, until the connecting rod 17 is out of contact with the square bar 21, the switching block 23 is disengaged from the clamping portion 16 and reset to the left side under the elastic force of the third spring 24; until the second sword grid bar 3 moves to the top of its stroke, the switching mechanism above forces it to switch back to the limiting column 11 on the left, and the locking mechanism on the left locks the second sword grid bar 3, so that the material is supported by the second sword grid bar 3.

[0044] It should be noted that there are two sets of switching mechanisms, which are respectively arranged on the upper and lower sides of the main body 1, and the two sets of switching mechanisms are rotationally symmetrical relative to the center of the first slide groove 9, so as to switch the position of the second sword grid bar 3 when the second connecting block 5 moves to the end of its stroke (such as Figure 6 The figure shows the switching mechanism under the first slide slot 9), and when the first sword grid bar 2 and the second sword grid bar 3 move synchronously and in opposite directions, when the second sword grid bar 3 moves to the end of the first slide slot 9 and switches, the first sword grid bar 2 synchronously contacts the corresponding square bar 21 on the other side, which will not affect the operation of the switching mechanism; in order to improve the stability of the second sword grid bar 3 moving along the limit column 11, the thickness of the second sword grid bar 3 is slightly increased, that is, the thickness of the second sword grid bar 3 is slightly greater than the thickness of the first sword grid bar 2, and the length of the two limit columns 11 is the same as the thickness of the second sword grid bar 3, so that when the second sword grid bar 3 switches its position along the limit column 11, the second sword grid bar 3 can maintain contact with at least one limit column 11 until the position switching is completed, and the second sword grid bar 3 is completely located on one limit column 11, so as to avoid the second sword grid bar 3 from detaching from between the two limit columns 11 as much as possible.

[0045] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A material support device for a laser cutting machine, comprising a main body, characterized in that: The main body is provided with: A first sword fence bar, which is limitedly connected to the main body; A second sword bar, located on one side of the first sword bar; The driving mechanism has a first stroke and a second stroke. In the first stroke, the driving mechanism drives the second sword bar to move downward and to the other side of the first sword bar; in the second stroke, the driving mechanism drives the second sword bar to move upward and reset; in the process of the second sword bar moving upward or downward, the first sword bar and the second sword bar are in contact with each other; The driving mechanism drives the first sword bar and the second sword bar to move vertically and in opposite directions; The driving mechanism includes a first connecting block fixed on the first sword grid bar and a second connecting block limited on the second sword grid bar, the first connecting block is fixed with a first rack, the second connecting block is fixed with a second rack, the main body is rotatably connected with a gear, the first rack and the second rack are both meshed with the gear, and also includes a driving member for driving the first connecting block to move vertically; The second connecting block is provided with a through groove, both sides of the through groove are provided with limiting columns, the distance between the two limiting columns is equal to the thickness of the first sword fence bar, and the second sword fence bar is provided with limiting holes adapted to the limiting columns.

2. A material support device for a laser cutting machine according to claim 1, characterized in that: It also includes a locking mechanism, which is used to lock the second sword fence bar on the corresponding limiting column.

3. The material support device for a laser cutting machine according to claim 2, characterized in that: The locking mechanism comprises a clamping block rotatably connected to the second connecting block, a torsion spring is arranged between the clamping block and the second connecting block, a wedge surface and a clamping hook are constructed on the clamping block, and a clamping portion is constructed on the second sword fence bar.

4. The material support device for a laser cutting machine according to claim 3, characterized in that: It also includes an unlocking mechanism, which releases the locking mechanism from locking the second sword fence bar when the second sword fence bar slides along the limiting column.

5. The material support device for a laser cutting machine according to claim 4, characterized in that: The unlocking mechanism comprises a connecting rod slidably connected in the second connecting block, a first spring is arranged between the connecting rod and the second connecting block, a first protrusion is constructed on the connecting rod, and a second protrusion is constructed on the clamping block.

6. The material support device for a laser cutting machine according to claim 5, characterized in that: It also includes a switching mechanism, which is used to switch the second sword grid bar from one limiting column to another limiting column.

7. The material support device for a laser cutting machine according to claim 6, characterized in that: The switching mechanism includes a square bar slidably connected to the main body, a second spring is arranged between the square bar and the main body, a switching block is slidably connected to the square bar, a card slot adapted to the card connection portion is configured at the top of the switching block, a third spring is arranged between the switching block and the square bar, and a contact plate is configured on the main body.

Images