Dust removal mechanism for laser cutting machine and laser cutting machine

Abstract

The application belongs to the technical field of laser cutting machines, and particularly relates to a dust removal mechanism for a laser cutting machine and the laser cutting machine, which comprises at least one lifting mechanism, at least one plate-shaped partition movably connected with the lifting mechanism, and an adjusting device for driving the at least one plate-shaped partition to lift between a first position and a second position; the adjusting device is configured to be linked with the action of a grid material table in the laser cutting machine. In the application, multiple buffering devices are designed, which greatly reduces vibration and noise.

Description

Technical Field

[0001] This invention belongs to the field of laser cutting machine technology, specifically relating to a dust removal mechanism for a laser cutting machine and a laser cutting machine. Background Technology

[0002] Currently, various laser cutting manufacturers have adopted a series of dust removal measures to address these harmful fumes and eliminate their harmful effects. The first type of dust removal is an integrated exhaust structure, which uses a large cavity to surround the entire equipment for optimal dust removal. However, this method requires a high-powered dust collector, occupies a large area, has complex piping installation, and is prone to leaks and poor ventilation. In actual operation, it cannot effectively remove all the fumes generated by the cutting machine, impacting the user's working environment. Another type of dust removal is... Figure 13 As shown, the lower part of the laser cutting machine bed 56 is divided by a partition into several longitudinally arranged small chambers 51 of equal geometric dimensions and a main suction duct 52 at the front, which is connected to the dust collector. Each small chamber is connected to the main suction duct by a valve 53, and the machine-controlled valve controls the cylinder through the inlet and outlet pipes. A hopper 54 is located within each small chamber, sealed with welded end plates at both ends, and several ventilation holes 55 are opened on the lower sides of the hopper. The system's air extraction process is controlled by opening and closing the valves. This method saves space and improves dust removal efficiency. Currently, our company's lifting laser cutting machine uses this dust removal method. However, this method can cause some problems during the use of the laser cutting machine. For example, the distance between the material table of the lifting laser cutting machine and the ground in the cutting area does not change, so the sealed cavity can remain in the same position relative to the bed. However, because the cutting area of ​​a laser cutting machine has two layers of material platforms, namely the upper cutting platform and the lower cutting platform, when the upper cutting platform is working, the space below the upper cutting platform needs to be sealed to effectively remove dust. Similarly, when the lower cutting platform is working, the space below the lower cutting platform also needs to be sealed. However, since there is a certain distance between the upper and lower cutting platforms, this space cannot be sealed, otherwise the lower cutting platform cannot move. Therefore, when the upper cutting platform is working, the space between it and the lower cutting platform is not sealed, that is, the upper area between the two adjacent chambers is connected. This space cannot provide effective negative pressure, which greatly weakens the dust removal effect. Therefore, traditional dust removal mechanisms are not suitable for this type of machine tool. Summary of the Invention

[0003] The purpose of this invention is to provide a dust removal mechanism for a laser cutting machine and a laser cutting machine, which can dynamically seal the space between the upper and lower material tables of the laser cutting machine to significantly improve the dust removal effect.

[0004] To achieve the above object, the present application provides the following technical scheme: A dust removal mechanism for a laser cutting machine, comprising: at least one lifting mechanism, at least one plate-shaped partition connected with the lifting mechanism, and an adjusting device for driving the at least one plate-shaped partition to lift between a first position and a second position; the lifting mechanism comprises a first lifting mechanism and a second lifting mechanism, each lifting mechanism comprising a lifting module, the lifting module comprising a middle support arm and at least one side support arm, the middle support arm and the side support arm being hinged and acting in response to triggering of a grid workbench; the adjusting device comprises at least one connecting device, the connecting device adopting an extended range connecting mechanism, the extended range connecting mechanism comprising a driving rack, an intermediate gear connecting plate, a driven rack, an output gear set and an input gear; the driving rack is connected with the lifting module of the first lifting mechanism; the driven rack and the output gear set are installed on the intermediate gear connecting plate, the other end of the intermediate gear connecting plate being connected with the bed of the machine tool to provide reliable support for the driven rack and the output gear set; the driven rack is connected with the lifting partition of the plate-shaped partition; the driving rack, the input gear, the output gear set and the driven rack are mutually engaged, and the displacement of the descent of the first lifting mechanism is multiplied and transmitted to the displacement of the plate-shaped partition.

[0005] Preferably, the lifting module further comprises an elastic element for providing a reset force, the elastic element being a spring, a hydraulic rod or a pneumatic spring.

[0006] Preferably, the lifting mechanism further comprises a guide device for guiding the middle support arm to move in a vertical direction, and a stop bolt mechanism for locking the lifting module at a specified position.

[0007] Preferably, the plate-shaped partition comprises a fixed partition and a lifting partition connected with the fixed partition in a sliding manner, the fixed partition being provided with a guide groove, and the lifting partition 32 being matched with the guide groove through a guide wheel or a guide block.

[0008] Preferably, a damping block is arranged between the side support arm and the workbench support frame, the damping block being made of rubber, nylon or polytetrafluoroethylene.

[0009] Preferably, an unlocking device for controlling unlocking of the stop bolt mechanism is further included, the unlocking device being a mechanical connecting rod mechanism, an electric cylinder or a pneumatic cylinder.

[0010] The present application also discloses a laser cutting machine comprising the dust removal mechanism, for processing plate-shaped workpieces.

[0011] The present application has the following beneficial effects:

[0012] The present application is directed to the structural characteristics of the upper and lower material tables of a laser cutting machine, and realizes dynamic sealing through a plate-shaped partition piece. When the upper cutting material table is working, the lifting partition piece rises to completely separate the adjacent small chambers, forming an independent sealed space to ensure an effective negative pressure environment. When the lower cutting material table is working, the lifting partition piece descends without hindering the movement of the material table, and at the same time, the small chamber below remains independent sealing, solving the problem of insufficient negative pressure caused by the unsealed space between the upper and lower material tables of the traditional dust removal mechanism, and significantly improving the dust removal efficiency. The present application uses a pure mechanical mechanism to control the lifting of the partition piece, without relying on complex electrical or hydraulic systems, reducing the failure points and making the operation more stable. At the same time, the manufacturing and maintenance costs of the mechanical structure are lower, which is conducive to improving the added value of the laser cutting machine product and facilitating the popularization and application. The present application designs multiple buffer devices, including the upper and lower shock-absorbing rubber blocks in contact with the wedge surfaces between the side support arms and the material table support frame, the compression springs below the middle support arms, etc., which can effectively absorb the impact force during lifting and greatly reduce the vibration. At the same time, the mechanical matching buffer structure reduces the friction and collision noise between the components, improving the working environment. The present application uses an extended range connection mechanism to transmit the displacement of the lifting mechanism to the lifting partition piece through the meshing of the driving rack, gear set and driven rack, improving the response speed and displacement accuracy of the partition piece lifting, ensuring timely and accurate sealing action, and further ensuring the stability of the negative pressure environment. The present application realizes the automatic linkage of the material table movement and the partition piece lifting and positioning unlocking through the unlocking linkage link, key type fork and other mechanisms (such as automatic triggering of unlocking reset when the lower material table exits and the upper material table enters), without the need for manual intervention, improving the automation degree and operation convenience of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view of the present application;

[0014] Figure 2 is a perspective view of the first lifting mechanism in the present application;

[0015] Figure 3 is a perspective view of the extended range connection mechanism in the present application;

[0016] Figure 4 is a one-directional perspective view of the lifting module in the present application;

[0017] Figure 5 is another directional perspective view of the lifting module in the present application;

[0018] Figure 6 is a perspective view of the material table support frame in the present application;

[0019] Figure 7 is a perspective view of the lifting support frame in the present application;

[0020] Figure 8 is a partial enlarged view of the lifting module in the present application;

[0021] Figure 9 Enlarged view of the stop bolt mechanism in the present invention;

[0022] Figure 10 Perspective view of the plate-shaped partition in the present invention;

[0023] Figure 11 Partial enlarged view of the plate-shaped partition in the present invention;

[0024] Figure 12 Perspective view of the second lifting mechanism in the present invention;

[0025] Figure 13 Application state diagram of the present invention;

[0026] Figure 14 Partial enlarged view of the present invention;

[0027] Figure 15 Connection diagram of the range-extending connection mechanism and the lifting module in the present invention;

[0028] Figure 16 Partial enlarged view of the longitudinal connecting rod in the present invention;

[0029] Figure 17 Partial enlarged view of the transverse connecting rod in the present invention;

[0030] In the figure: 1, first lifting mechanism; 11, material table support frame; 111, square groove; 112, upper shock-absorbing rubber block; 12, lifting support frame; 121, guide bearing; 122, unlocking linkage connecting rod; 123, key-type yoke; 124, longitudinal connecting rod; 125, transverse connecting rod; 13, lifting module; 131, side support arm; 1311, lower shock-absorbing rubber block; 132, middle support arm; 1321, bearing guide groove; 1322, bearing guide plate; 133, compression spring; 134, spring guide rod; 135, rotating shaft; 136, rolling bearing; 137, stop bolt mechanism; 1371, positioning spring; 1372, stop lock tongue; 1373, locking nut; 1374, connecting plate; 1375, arc surface; 2, second lifting mechanism; 21, middle groove; 22, six-rib steel guide rail; 3, plate-shaped partition; 31, fixed partition; 311, guide rail groove; 32, lifting partition; 321, guide wheel; 4, range-extending connection mechanism; 41, driving rack; 42, middle gear connecting plate; 43, driven rack; 44, output gear set; 45, input gear; 51, small chamber; 52, main air suction duct; 53, valve; 54, hopper; 55, ventilation hole; 56, laser cutting machine body. DETAILED DESCRIPTION

[0031] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0032] As shown in Figure 1 and Figure 3 , the present application discloses a dust removal mechanism for a laser cutting machine, comprising: at least one lifting mechanism, at least one plate-shaped partition connected with the lifting mechanism, and an adjusting device for driving the at least one plate-shaped partition to lift between a first position and a second position; the adjusting device is used to drive the plate-shaped partition to lift between the first position (upward state) and the second position (downward state), and is linked with the action of the grid material table in the laser cutting machine. The adjusting device can include the following three implementation ways:

[0033] Embodiment 1 (mechanical linkage type): as shown in Figure 2 and Figure 4 , the adjusting device in this embodiment is the preferred way, which includes a lifting module 13 and a range increasing connection mechanism 4, and the lifting module 13 is directly pressed by the material table wheel, and the motion is mechanically transmitted to the plate-shaped partition 3. This way has simple structure, low cost and high reliability.

[0034] Embodiment 2 (electric drive type): the adjusting device can use a servo motor or a stepper motor to drive a lead screw or a gear mechanism, directly control the lifting of the plate-shaped partition 3. The motor is connected with the control system of the laser cutting machine, and automatically adjusts according to the material table position signal, with fast response speed and high precision.

[0035] Embodiment 3 (pneumatic drive type): the adjusting device uses a cylinder as a power source, and the extension and retraction of the cylinder piston rod are controlled by a gas valve, driving the plate-shaped partition 3 to lift. The pneumatic system has small noise and is easy to maintain, and is suitable for high dust environment.

[0036] The lifting mechanism can have various implementation ways, in this embodiment, mainly including a first lifting mechanism and a second lifting mechanism which are similar in structure but slightly different, each lifting mechanism includes a lifting module, the lifting module includes a middle support arm and at least one side support arm, the middle support arm and the side support arm are hinged and act in response to the triggering of the grid material table.

[0037] Specifically, as shown in Figure 2As shown, the first lifting mechanism and the second lifting mechanism respectively include a material table support frame 11, a lifting support frame 12 and a lifting module 13. The material table support frame is installed on the side surface of the laser cutting machine body and is a C-shaped section steel. The upper surface of the upper end of the C-shaped section steel serves to support the upper material table, and the upper surface of the lower end of the C-shaped section steel serves to support the lower material table. The lifting device of the present application is arranged at the lower end of the C-shaped section steel, i.e. the passing surface of the lower material table. The lower end of the material table support frame is slotted, and a part of the lifting module is exposed. When the wheels on both sides of the material table move, the exposed lifting module can be pressed.

[0038] In the present application, the second lifting mechanism is slightly different from the first one, mainly due to the structure of the material table. Specifically, as shown in Figure 12 As shown, the intermediate part of the side support arm and the middle support arm in the second lifting mechanism is provided with an intermediate slot 21, and a six-rib steel guide rail 22 passing through the intermediate slot is arranged on the material table support frame. The second lifting mechanism is different from the first one in that the material table support frame of the second one is designed with a six-rib steel guide rail. Therefore, the second lifting mechanism is designed with a central slot, and the structures and functions of other parts remain unchanged. It can be ensured that the material table wheels can smoothly compress the first lifting mechanism to the designed position through the guide rail.

[0039] As shown in Figure 7 The lifting support frame is arranged below the material table support frame and is also installed on the side surface of the laser cutting machine body. The lifting support frame is a sheet metal bending piece, and the bending piece and the parts installed thereon are installed on the side surface of the laser cutting machine body. The lifting module is arranged on the lifting support frame and extends from the lower part of the material table support frame. The lifting module is raised and lowered to drive the lifting partition plate to be raised and lowered through the range increasing connection mechanism.

[0040] The lifting mechanism can include the following three implementation modes:

[0041] Example 1 (spring return type): As shown in Figure 4 and Figure 5 The lifting mechanism includes a lifting module 13, which is composed of a side support arm 131, a middle support arm 132, a compression spring 133, a compression spring guide rod 134 and the like. When the material table wheels press the side support arm 131, the middle support arm 132 is lowered to compress the compression spring 133, and the lifting partition plate is lowered through the range increasing connection mechanism 4; after the material table is removed, the compression spring 133 is reset to make the lifting partition plate rise. This mode is purely mechanical operation and does not require external power.

[0042] Example 2 (hydraulic buffer type): The compression spring 133 in the lifting mechanism is replaced by a hydraulic rod, which provides damping and reset force, smooth movement and can absorb large impact, and is suitable for high-speed or heavy-load working conditions.

[0043] Example 3 (pneumatic spring): The lifting mechanism uses a pneumatic spring instead of a compression spring 133, which can provide constant support force, adjustable stroke, easy to control lifting speed, and reduce noise.

[0044] As shown in Figures 4-6 , the lifting module 13 includes two side support arms 131, a middle support arm 132, a compression spring 133, a spring guide rod 134, a rotating shaft 135, and a rolling bearing 136. The lower part of the material table support frame is provided with a square slot 111, and the middle support arm and the side support arms extend from the square slot. One end of each of the two side support arms is hingedly connected to one end of the middle support arm, and the other end of each of the two side support arms is provided with the rotating shaft. The two ends of the rotating shaft are provided with the rolling bearing, and the rolling bearing rolls with the bottom of the lifting support frame.

[0045] The elastic element is used to provide a restoring force, so that the lifting mechanism automatically returns after the material table is moved away. The elastic element can include the following three implementation ways:

[0046] Example 1 (helical spring): As shown in Figure 4 , the compression spring 133 is sleeved on the spring guide rod 134 to provide a linear restoring force, which is simple in structure and low in cost.

[0047] Example 2 (hydraulic rod): The hydraulic rod uses hydraulic oil damping and gas pressure to provide a restoring force, which is smooth in movement and strong in adjustability.

[0048] Example 3 (pneumatic spring): The pneumatic spring provides a restoring force by compressing a sealed gas, which is stable in force value and long in service life.

[0049] The adjusting device includes at least one connecting device, which includes a large-stroke connecting mechanism, specifically a range-increasing connecting mechanism 4 in this embodiment, for amplifying and transmitting the output displacement of the lifting mechanism to the plate-shaped partition.

[0050] The connecting device is used to connect the movable end of the lifting mechanism with the plate-shaped partition and realize displacement transmission. The connecting device can include the following three implementation ways:

[0051] Example 1 (multi-link mechanism): The connecting device adopts a hinged multi-link system, such as a four-link or six-link mechanism, to convert the linear motion of the lifting mechanism into an amplified displacement of the lifting partition. The multi-link mechanism is simple in structure, low in cost, and small in space occupation, and is suitable for compact installation environment.

[0052] Example 1 (multi-stage electric cylinder mechanism): The connecting device uses a multi-stage telescopic electric cylinder, the fixed end of which is connected with the bed body, and the movable end of which is connected with the lifting partition. The electric cylinder is driven by a controller, and the lifting stroke and speed can be programmed and controlled, which is high in automation degree but high in cost.

[0053] As shown in Figure 3 Figure 3, the range-extending connection mechanism includes a driving rack 41, an intermediate gear connecting plate 42, a driven rack 43, an output gear set 44, and an input gear 45. The driving rack 41 is connected to the lifting module 13 of the first lifting mechanism 1. The driven rack 43 and the output gear set 44 are installed on the intermediate gear connecting plate 42, and the other end of the intermediate gear connecting plate 42 is connected to the bed of the machine tool, providing reliable support for the driven rack 43 and the output gear set 44. The driven rack 43 is connected to the lifting partition 32 of the plate-shaped partition 3. The driving rack 41, the input gear 45, the output gear set 44, and the driven rack 43 are in meshing engagement with each other, and the downward displacement of the first lifting mechanism 1 is multiplied and transmitted to the displacement of the plate-shaped partition 3.

[0054] The lifting mechanism further includes a guide device for guiding the movement of the middle support arm in the vertical direction, and a stop pin mechanism for locking the lifting module at a specified position.

[0055] The guide device is used to guide the movement of the moving parts in the lifting mechanism in the vertical direction, preventing deflection. The guide device can include the following three implementations:

[0056] As shown in Figure 9 Figure 1 (linear guide rail type): As shown in Figure 9 Figure 2, the guide device includes a bearing guide groove 1321 and a bearing guide plate 1322, which are in sliding fit with the guide bearing 121 on the lifting support frame 12, ensuring the vertical movement of the middle support arm 132. As shown in Figure 7 Figure 3, a guide bearing 121 is fixed on the rear side arm of the lifting support frame, and the guide bearing is in sliding fit with the bearing guide plate. A stop pin mechanism 137 is provided on one side of the bearing guide plate for positioning the guide bearing.

[0057] Example 2 (roller guide rail type): The guide device uses rubber rollers instead of bearings, which roll in the guide rail groove, making little noise and being able to elastically deform to adapt to installation errors.

[0058] Example 3 (slider guide rod type): The guide device uses a combination of linear bearings and guide rods, with the guide rods fixed on the lifting support frame and the sliders connected to the middle support arm, resulting in small movement resistance and high precision.

[0059] The stop pin mechanism is used to lock the lifting mechanism at a specified position. The stop pin mechanism can include the following three implementations:

[0060] Example 1 (spring reset type): As shown in Figure 9As shown, the stop bolt mechanism includes a stop latch 1372, a positioning spring 1371 and a locking nut 1373. The positioning spring 1371 pushes the stop latch 1372 to insert under the guide bearing 121 to achieve locking; when unlocking, external force pulls the stop latch 1372 to compress the spring to disengage. The guide bearing can be locked by the stop bolt mechanism. Specifically, the stop bolt mechanism includes a positioning spring 1371, a stop latch 1372 and a locking nut 1373, one side of the middle support arm is bent inward to form a connecting plate 1374, the front end of the stop latch passes through the bearing guide plate, the rear end of the stop latch passes through the through hole on the connecting plate and is connected with the locking nut, and the positioning spring is sleeved on the stop latch. Further, in order to make the guide bearing smoothly enter the upper part of the stop latch from the lower part, the front end of the stop latch is provided with an arc surface 1375 matched with the guide bearing. The stop latch can be inserted into the lower part of the guide bearing under the action of the positioning spring, thereby achieving the function of limiting the guide bearing.

[0061] Embodiment 2 (electric cylinder driving type): the stop bolt mechanism uses an electric cylinder to drive the stop latch, and the electric cylinder is controlled by a control system, so that remote and automatic locking / unlocking can be realized, and the precision is high.

[0062] Embodiment 3 (pneumatic cylinder driving type): the stop bolt mechanism adopts a pneumatic cylinder driving mode, the pneumatic response is fast, and it is suitable for frequent operation environment.

[0063] The unlocking device is used to control the unlocking of the stop bolt mechanism, so as to realize the automatic resetting of the lifting mechanism. The unlocking device can include the following three implementation modes:

[0064] Embodiment 1 (mechanical connecting rod type): as shown in Figure 7 , Figure 8 and Figure 14As shown, the unlocking device in this embodiment is a set of mechanical linkage mechanism, mainly including unlocking linkage link 122, key type fork 123, longitudinal connecting rod 124 and transverse connecting rod 125. The unlocking linkage link 122 is arranged on the lifting support frame on one side of the guide bearing, and the unlocking linkage link is connected with the transverse connecting rod 125 located on the outer side of the lifting support frame 12. Specifically, when the lower layer table moves backward out of the working area, the upper layer table enters the working area. An elastic lever is arranged at the front end of the upper layer table, and when the upper layer table is in place, the elastic lever collides with the longitudinal connecting rod 124. At this time, the longitudinal connecting rod 124 produces a forward tilt, driving the transverse connecting rod 125 to move backward. At this time, the unlocking action of the stop pin mechanism is completed. When a plurality of transverse connecting rods 125 are connected in series, the mechanism can simultaneously realize the unlocking action of a plurality of stop pin mechanisms. The end of the unlocking linkage link is provided with a key type fork 123. When unlocking, the locking nut is clamped between the key type forks, and the unlocking linkage link is driven by the longitudinal connecting rod 124 to move outward, driving the locking nut to move outward and driving the stop lock tongue to move. The unlocking linkage link drives the key type fork to rotate, thereby pulling out the locking nut, making the stop lock tongue disengage from below the guide bearing, releasing the guide bearing. Under the rebound power of the compression spring, the left and right lifting mechanisms rebound and reset, and the lifting partition plate rises to the initial position, and the whole mechanism action is completed.

[0065] Example 2 (electric cylinder driving type): The unlocking device uses an electric cylinder to directly pull or push the stop lock tongue 1372. The electric cylinder is connected with the control system and can be automatically triggered according to the table position signal.

[0066] Example 3 (gas cylinder driving type): The unlocking device uses a gas cylinder as a power source, and realizes rapid unlocking through the control of the gas valve.

[0067] The damping block is used to reduce the impact and noise between the lifting mechanism and the table support frame. The damping block can include the following three implementation ways:

[0068] Example 1 (rubber damping block): As shown in Figure 4 and Figure 6 Further, a lower damping rubber block 1311 is fixed on the other end of each of the two side support arms, and an upper damping rubber block 112 is arranged below the table support frame. The contact surfaces of the upper and lower damping rubber blocks are wedge-shaped surfaces, and the upper and lower damping rubber blocks are in contact and cooperation at the initial position of the lifting module.

[0069] Example 2 (nylon damping block): The damping block uses nylon material, which has strong wear resistance and long service life, and is suitable for high temperature environment.

[0070] Example 3 (PTFE shock absorbing block): The shock absorbing block is made of polytetrafluoroethylene material, which has low friction coefficient, self-lubricating and can reduce adhesion.

[0071] The partition is used to separate the dust removal space, and includes a fixed part and a movable part. The partition can include the following three implementations:

[0072] Example 1 (guide wheel type): As shown in Figure 10 and Figure 11 , the plate-shaped partition includes a fixed partition 31 and a lifting partition 32, the fixed partition is fixed on the bed body, and the fixed partition is a bent sheet metal part, both ends of which are bent out of the guide rail groove 311 of a specified size, so that the guide wheels at both ends of the lifting partition can smoothly slide. The top is designed with a 180° folded edge to increase the strength of the fixed partition. In addition, the connection position is connected with the bed body or other sealing cover plate on both sides. The main body of the lifting partition is a partition sheet metal part, the top end of which is designed with a 180° folded edge to increase the strength of the partition sheet metal part. Two rotating shafts are welded on the same height on the lower end of the lifting partition. Two guide wheels 321 are installed on the rotating shafts, which can be realized by bearings or rubber rollers. The end of the guide wheel is positioned by a shaft with a retainer. The structure of the two guide wheels can be used as a pulley to effectively slide the lifting partition in the track groove on both sides of the fixed partition. The lifting partition is connected with the other end of the range increasing connection mechanism.

[0073] Example 2 (slider guide rail type): The partition uses a combination of linear sliders and guide rails, the slider is fixed on the lifting partition, and the guide rail is fixed on the fixed partition, which has good rigidity and strong carrying capacity.

[0074] Example 3 (flexible sealing type): The partition uses flexible material (such as rubber curtain) combined with rigid frame, the lifting partition moves by stretching or winding, which has good sealing performance and is suitable for irregular space.

[0075] The working principle of the device is: install the device on the laser cutting machine, each group of adjacent dust removal mechanisms shown in the application and the dust removal ports on both sides of the lower part of the laser cutting machine bed and the corresponding cover plates form a rectangular space. In the application, the lifting partition 32 is in the initial state by default. At this time, if the upper layer of the material table is used for cutting, the device does not move, and each group of adjacent dust removal mechanisms shown in the application and the dust removal ports on both sides of the lower part of the laser cutting machine bed and the corresponding cover plates form a rectangular space to form a relatively closed vacuum space, so that the area has a better dust removal effect. When the lower layer of the material table is used for cutting, the lower layer of the material table moves from the tail end of the laser cutting machine to the front end, and the wheels on both sides of the material table will first press the side support arms in the second lifting mechanism. With the advancement of the material table, the compression spring below the middle support arm gradually moves down, at this time, the lifting partition will move down with the lifting module until it slides under the lower layer of the material table. During the movement of the material table, when the wheels of the material table are pressed directly above the lifting module, the middle support arm will move down, and the rolling bearing on the lifting support frame will move to the top end along the bearing guide groove on the middle support arm. At this time, the rolling bearing on the lifting support frame will be locked by the locking tongue in the key-shaped fork, and the lifting module will be locked in the current position without changing, and the corresponding lifting partition has already been lowered into position and will not affect the forward movement of the lower layer of the material table. At this time, the opening of the key-shaped fork is just clamped in the front end of the hexagonal head of the locking nut on the middle support arm. The other end of the key-shaped fork is connected with the unlocking linkage rod. When the lower layer of the material table is cut and returned to the tail end of the warehouse and the upper layer of the material table is moved to the working position, an elastic lever is arranged at the front end of the upper layer of the material table. When the upper layer of the material table is in position, the elastic lever collides with the longitudinal connecting rod, at this time the longitudinal connecting rod produces a forward tilt, driving the horizontal connecting rod to move backward, driving the key-shaped fork to move, the key-shaped fork pulls out the locking nut, the locking nut drives the locking tongue to overcome the elastic force of the positioning spring to retract, releasing the guide bearing, under the rebound power of the compression spring, the left and right side lifting mechanisms rebound to reset the lifting partition to the initial position, and the whole mechanism action is completed. When using an alternative solution, such as using an electric cylinder to drive unlocking or range extension connection, the working principle is similar, but the driving mode and transmission structure are different.

[0076] It should be noted that those skilled in the art can make some improvements and refinements without departing from the principles of the application, and these improvements and refinements should be considered within the scope of protection of the application.

Claims

1. A dust removal mechanism for a laser cutting machine, characterized by, The dust removal mechanism comprises: at least one lifting mechanism, at least one plate-shaped partition connected with the lifting mechanism, and adjusting device for driving the at least one plate-shaped partition to lift between a first position and a second position; the lifting mechanism comprises a first lifting mechanism and a second lifting mechanism, each lifting mechanism comprising a lifting module, the lifting module comprising a middle support arm and at least one side support arm, the middle support arm and the side support arm being hinged and acting in response to triggering of the grid table; the adjusting device comprises at least one connecting device, the connecting device using a range-extending connecting mechanism, the range-extending connecting mechanism comprising a driving rack, an intermediate gear connecting plate, a driven rack, an output gear set and an input gear; the driving rack is connected with the lifting module of the first lifting mechanism; the driven rack and the output gear set are mounted on the intermediate gear connecting plate, the other end of the intermediate gear connecting plate being connected with the bed of the machine tool to provide reliable support for the driven rack and the output gear set; the driven rack is connected with the lifting partition of the plate-shaped partition; the driving rack, input gear, output gear set and driven rack are meshed with each other, and the downward displacement of the first lifting mechanism is multiplied and transmitted to the displacement of the plate-shaped partition.

2. The dust removing mechanism according to claim 1, wherein The lifting module further comprises an elastic element for providing a reset force, the elastic element being a spring or a hydraulic rod.

3. The dust removing mechanism according to claim 1, wherein The lifting mechanism further comprises a guide device for guiding the middle support arm to move in a vertical direction, and a stop bolt mechanism for locking the lifting module at a specified position.

4. The dust removing mechanism according to claim 1, wherein The plate-shaped partition comprises a fixed partition and a lifting partition connected with the fixed partition in a sliding manner, the fixed partition being provided with a guide rail groove, and the lifting partition being matched with the guide rail groove through a guide wheel or a guide block.

5. The dust removing mechanism according to claim 4, wherein A damping block is arranged between the side support arm and the table support frame, the damping block being made of rubber, nylon or polytetrafluoroethylene.

6. The dust removing mechanism according to claim 3, wherein Further comprising an unlocking device for controlling unlocking of the stop bolt mechanism, the unlocking device being a mechanical connecting rod mechanism, an electric cylinder or a pneumatic cylinder.

7. A laser cutting machine characterized in that, The dust removal mechanism comprises: at least one lifting mechanism, at least one plate-shaped partition connected with the lifting mechanism, and adjusting device for driving the at least one plate-shaped partition to lift between a first position and a second position; the lifting mechanism comprises a first lifting mechanism and a second lifting mechanism, each lifting mechanism comprising a lifting module, the lifting module comprising a middle support arm and at least one side support arm, the middle support arm and the side support arm being hinged and acting in response to triggering of the grid table; the adjusting device comprises at least one connecting device, the connecting device using a range-extending connecting mechanism, the range-extending connecting mechanism comprising a driving rack, an intermediate gear connecting plate, a driven rack, an output gear set and an input gear; the driving rack is connected with the lifting module of the first lifting mechanism; the driven rack and the output gear set are mounted on the intermediate gear connecting plate, the other end of the intermediate gear connecting plate being connected with the bed of the machine tool to provide reliable support for the driven rack and the output gear set; the driven rack is connected with the lifting partition of the plate-shaped partition; the driving rack, input gear, output gear set and driven rack are meshed with each other, and the downward displacement of the first lifting mechanism is multiplied and transmitted to the displacement of the plate-shaped partition. The lifting module further comprises an elastic element for providing a reset force, the elastic element being a spring or a hydraulic rod. The lifting mechanism further comprises a guide device for guiding the middle support arm to move in a vertical direction, and a stop bolt mechanism for locking the lifting module at a specified position. The plate-shaped partition comprises a fixed partition and a lifting partition connected with the fixed partition in a sliding manner, the fixed partition being provided with a guide rail groove, and the lifting partition being matched with the guide rail groove through a guide wheel or a guide block. A damping block is arranged between the side support arm and the table support frame, the damping block being made of rubber, nylon or polytetrafluoroethylene. Further comprising an unlocking device for controlling unlocking of the stop bolt mechanism, the unlocking device being a mechanical connecting rod mechanism, an electric cylinder or a pneumatic cylinder. The dust removal mechanism comprises: at least one lifting mechanism, at least one plate-shaped partition connected with the lifting mechanism, and adjusting device for driving the at least one plate-shaped partition to lift between a first position and a second position; the lifting mechanism comprises a first lifting mechanism and a second lifting mechanism, each lifting mechanism comprising a lifting module, the lifting module comprising a middle support arm and at least one side support arm, the middle support arm and the side support arm being hinged and acting in response to triggering of the grid table; the adjusting device comprises at least one connecting device, the connecting device using a range-extending connecting mechanism, the range-extending connecting mechanism comprising a driving rack, an intermediate gear connecting plate, a driven rack, an output gear set and an input gear; the driving rack is connected with the lifting module of the first lifting mechanism; the driven rack and the output gear set are mounted on the intermediate gear connecting plate, the other end of the intermediate gear connecting plate being connected with the bed of the machine tool to provide reliable support for the driven rack and the output gear set; the driven rack is connected with the lifting partition of the plate-shaped partition; the driving rack, input gear, output gear set and driven rack are meshed with each other, and the downward displacement of the first lifting mechanism is multiplied and transmitted to the displacement of the plate-shaped partition. The lifting module further comprises an elastic element for providing a reset force, the elastic element being a spring or a hydraulic rod. The lifting mechanism further comprises a guide device for guiding the middle support arm to move in a vertical direction, and a stop bolt mechanism for locking the lifting module at a specified position. The plate-shaped partition comprises a fixed partition and a lifting partition connected with the fixed partition in a sliding manner, the fixed partition being provided with a guide rail groove, and the lifting partition being matched with the guide rail groove through a guide wheel or a guide block. A damping block is arranged between the side support arm and the table support frame, the damping block being made of rubber, nylon or polytetrafluoroethylene. Further comprising an unlocking device for controlling unlocking of the stop bolt mechanism, the unlocking device being a mechanical connecting rod mechanism, an electric cylinder or a pneumatic cylinder.

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