Numerical control steel plate edge milling machine

Abstract

The application discloses a numerical control steel plate edge milling machine, which comprises a workbench, support plates arranged at both ends of the workbench, a top plate arranged at the top of the two support plates, an automatic linear guide rail arranged at the top of the top plate, and a row of downward pressing pieces arranged at the bottom end of the top plate, characterized in that the numerical control steel plate edge milling machine further comprises a telescopic plate assembly and an air outlet assembly, the surface of the telescopic plate assembly is connected with a moving plate assembly, the bottom of the moving plate assembly is connected with a baffle assembly near both ends on the left and right sides, an edge milling assembly extending to the bottom of the moving plate assembly is arranged on the moving plate assembly, a collecting structure is arranged below the edge milling assembly, and the collecting structure comprises a box sleeve and a collecting assembly arranged in the box sleeve.

Description

Technical Field

[0001] This invention relates to the field of steel plate milling machine technology, and more particularly to a CNC steel plate milling machine. Background Technology

[0002] A milling machine is a device that uses a high-speed milling cutter head to create weld bevels on steel plates before welding. CNC steel plate milling machines are one type of such machine. During operation, various parameters of a CNC steel plate milling machine can be adjusted (moving speed, milling motor speed, etc.). After adjustment, the milling work is performed automatically. However, during the milling process, metal shavings and fumes are generated. If these are not collected and treated, they will affect the working environment, and the fumes, in particular, will affect the health of the workers.

[0003] Therefore, we propose a CNC steel plate milling machine to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art as described in the background section, and to propose a CNC steel plate milling machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A CNC steel plate milling machine includes a worktable with support plates at both ends. A top plate is provided on top of the two support plates, and an automatic linear guide rail is provided on the top of the top plate. The automatic linear guide rail includes a track, a sliding block, and a linear motor. A row of pressing components is provided at the bottom of the top plate. Each pressing component includes a cylinder and a pressing block, with the pressing block connected to the telescopic end of the cylinder. During milling, the steel plate is placed on the top of the worktable, and then the cylinder telescopically presses the pressing block onto the steel plate. The machine is characterized by further including a telescopic plate assembly and an air outlet assembly. A movable plate assembly is connected to the surface of the telescopic plate assembly, and baffle assemblies are connected to the bottom of both sides of the movable plate assembly near both ends. A milling component extending to the bottom of the movable plate assembly is connected to the movable plate assembly. A collection structure is provided below the milling component, and the collection structure includes a box and a collection component disposed within the box. Opposite baffle assemblies B are provided on the top of the box near both sides. An air pump and a flue gas treatment device are provided between the collection component and the air outlet assembly.

[0007] Preferably, the telescopic plate assembly includes a sleeve plate, the top of which has a displacement groove, and a fixed plate is slidably disposed in the displacement groove. The top center of the fixed plate has a through-hole, and a telescopic rod is disposed in the mounting hole. The bottom end of the telescopic rod is connected to the middle position of the bottom end of the displacement groove. When the telescopic rod extends or retracts downward, the sleeve plate moves downward on the surface of the fixed plate through the displacement groove. The surface of the fixed plate is connected to a sliding block, and the movement of the sliding block can drive the fixed plate to move.

[0008] Preferably, the movable plate assembly includes a displacement plate connected to the bottom of the sleeve plate. Specifically, a screw is connected to the bottom end of the telescopic rod. The screw passes through the sleeve plate and the displacement plate and is locked by a nut, thus connecting the telescopic rod, the sleeve plate and the displacement plate together. A movable pressing wheel is connected to the bottom of the displacement plate, and the movable pressing wheel includes two positioning blocks and a pulley. The pulley is rotatably connected between the two positioning blocks through a shaft. Thus, when the sleeve plate is extended downward, it can drive the displacement plate to move downward, so that the pulley presses against the steel plate placed on the top of the worktable.

[0009] Preferably, the baffle assembly A includes a plate A, and two mounting blocks are fixed to the top of the plate A. The mounting blocks are bolted to the top of the displacement plate, thus connecting the plate A and the displacement plate. A receiving groove A is formed in the bottom end of the plate A. A plate B is slidably arranged inside the receiving groove A. A receiving groove B is formed in the bottom end of the plate B. A plate C is slidably arranged inside the receiving groove B. A receiving groove C is formed in the bottom end of the plate C. A plate D is slidably arranged inside the receiving groove C. Multiple springs A are provided in each of the receiving grooves A, B, and C. For example, in the receiving groove A, the top of the spring A is connected to the top of the receiving groove A, and the bottom of the spring A is connected to the top of the plate B. A mounting groove is formed in the bottom end of the plate D, and a rotating rod is rotatably arranged in the mounting groove.

[0010] Preferably, the milling assembly includes a mounting plate connected to the sleeve plate, and a milling component is passed through the surface of the mounting plate. The milling component includes a servo motor connected to the surface of the mounting plate, and the output end of the servo motor passes through the mounting plate and is connected to a milling cutter. The milling cutter is located at the bottom of the displacement plate. When the displacement plate descends and drives the milling component to descend through the mounting plate, the milling cutter can contact the edge of the steel plate. A connecting plate A is fixed at the bottom end of the mounting plate.

[0011] Preferably, a connecting plate B is fixed to the surface of the box sleeve, wherein the connecting plate B and the connecting plate A are locked together by bolts;

[0012] The collection assembly includes a collection box slidably disposed in a sleeve. A positioning rod is connected to the bottom of the collection box. The positioning rod includes two support plates. Each support plate has a vertical plate at one end. A positioning plate is connected between the top ends of the two vertical plates. The sleeve is vertically connected. When the collection box is placed into the sleeve from the bottom and the positioning rod is located at the bottom of the sleeve, the two vertical plates and the positioning plate are located on the surface of the sleeve. Then, bolts are used to pass through the positioning plate and lock it to the surface of the sleeve to prevent the collection box from falling down from the sleeve.

[0013] The bottom center of the collection box is connected to an external threaded ring, and an internal threaded connector is threaded to the outside of the external threaded ring. The internal threaded connector has a filter screen A inside and is located at the bottom of the external threaded connector. The end of the internal threaded connector away from the external threaded ring is connected to an air inlet pipe, and the end of the air inlet pipe away from the internal threaded connector is connected to the air inlet of the air pump.

[0014] Preferably, the baffle assembly B includes a plate a connected to the box sleeve, a plate b slidably disposed within the top of plate a, a plate c slidably disposed within the top of plate b, and a plate d slidably disposed within the top of plate c. Each of the tops of plates a, b, and c has a receiving groove D, and each receiving groove D contains multiple springs B. Plate b is located in the receiving groove D within the top of plate a, plate c is located in the receiving groove D within the top of plate b, and plate d is located in the receiving groove D within the top of plate c. The springs B can connect two adjacent plates at adjacent vertical positions, so that the springs B can push the top plate upwards. This ensures that the top of the uppermost plate d in the baffle assembly B can press against the bottom of the displacement plate, thus preventing debris from falling outside the collection box.

[0015] Preferably, the collection box is equipped with a filter element, which includes two connecting frames. Each connecting frame includes two vertical rods, and a horizontal rod is connected between the tops of the two vertical rods, so that the connecting frame is inverted concave rod shape. Each vertical rod is provided with multiple sets of limiting blocks, and each set of limiting blocks has two limiting blocks. A filter screen B is provided between the two connecting frames. Two U-shaped grooves are opened on both sides of the filter screen B, and the filter screen B is locked on the surface of the vertical rod through the U-shaped grooves and located between a set of limiting blocks. In this way, multiple filter screens B are locked between the two connecting frames, and the debris can be filtered through the filter screen B.

[0016] Preferably, the air outlet assembly includes an air jet box connected to the lower pressure member and an air supply pipe connected to the bottom of the top plate. The air supply pipe and the air jet box are connected by a connecting pipe. Both ends of the air supply pipe are connected to air outlet pipes. The ends of the two air outlet pipes away from the air supply pipe are connected to the air outlet end of the air pump. In this way, the air pump draws the flue gas from the flue gas treatment device and then supplies the flue gas from the air outlet pipe into the air supply pipe. After the gas fills the air supply pipe, it enters the air jet box from the connecting pipe and is ejected from the inclined air jet holes opened on the surface of the air jet box.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. This invention can collect the metal shavings generated during edge milling, preventing them from falling on the ground and steel plate, causing pollution to the working environment and affecting the edge milling work. In addition, the collection box is easy to remove from the box sleeve, so that the metal shavings can be cleaned up after too much is collected.

[0019] 2. In this invention, the fumes generated during milling can be extracted and treated by a fume treatment device to prevent the fumes from polluting the working environment. At the same time, the extraction of fumes can also help collect metal scraps, specifically by using suction to draw the scraps into a collection box.

[0020] 3. This invention can conveniently filter the metal debris that falls into the collection box in layers, preventing the metal debris from clogging the bottom of the collection box and causing poor gas flow at the external threaded ring when the smoke is drawn.

[0021] 4. In this invention, when treating the flue gas, the treated flue gas can be further treated by blowing the gas onto the edge of the steel plate, which can blow the debris into the collection box and cool down the temperature generated during the milling process.

[0022] 5. In this invention, the milling edge processing position can be enclosed by the displacement plate, two baffle assemblies and the mounting plate, so that metal debris is not easy to fall outside the collection box when blowing air, thus improving the debris collection effect. Attached Figure Description

[0023] Figure 1 This is an axial view of a CNC steel plate milling machine proposed in this invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the air outlet assembly;

[0025] Figure 3 for Figure 1 Schematic diagram of the telescopic plate assembly, the movable plate assembly, the baffle assembly and the box sleeve;

[0026] Figure 4 for Figure 3 A schematic diagram of the mobile board assembly viewed from below;

[0027] Figure 5 for Figure 4 Detailed structural diagram of the telescopic plate assembly;

[0028] Figure 6 for Figure 5 Detailed structural diagram of the middle baffle assembly A;

[0029] Figure 7 for Figure 4 Separation diagram of the milled edge assembly and the box sleeve;

[0030] Figure 8 for Figure 7 Disassembly diagram of the internal structure of the middle box;

[0031] Figure 9 for Figure 8 A breakdown diagram of the internal structure of the collection box;

[0032] Figure 10 for Figure 9 Detailed structural diagram of the filter element.

[0033] In the diagram: 1. Air outlet assembly; 110. Air supply pipe; 120. Connecting pipe; 130. Air jet box; 2. Telescopic plate assembly; 210. Sleeve plate; 220. Fixed plate; 230. Telescopic rod; 3. Moving plate assembly; 310. Displacement plate; 320. Moving extrusion wheel; 4. Baffle assembly A; 410. Plate A; 411. Receiving groove A; 412. Mounting block; 420. Plate B; 421. Receiving groove B; 430. Plate C; 431. Receiving groove C; 440. Plate D; 441. Mounting groove; 442. Rotating rod; 5. Milling edge assembly; 51 0. Mounting plate; 520. Milled edge piece; 530. Connecting plate A; 6. Box sleeve; 610. Connecting plate B; 7. Baffle assembly B; 710. Plate a; 720. Plate b; 730. Plate c; 740. Plate d; 8. Collection assembly; 810. Collection box; 820. Positioning rod; 830. External threaded ring; 840. Filter screen A; 850. Internal threaded connector; 9. Filter element; 910. Connecting frame; 911. Vertical rod; 912. Horizontal rod; 920. Filter screen B; 10. Workbench; 11. Support plate; 12. Top plate; 13. Pressing part. Detailed Implementation

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] Reference Figure 1-10 A CNC steel plate milling machine includes a worktable 10, with support plates 11 at both ends. A top plate 12 is located on top of the two support plates 11, and an automatic linear guide rail is mounted on the top of the top plate 12. The automatic linear guide rail includes a track, a sliding block, and a linear motor. A row of pressing components 13 is located at the bottom of the top plate 12. Each pressing component 13 includes a cylinder and a pressing block, with the pressing block connected to the telescopic end of the cylinder. During milling, the steel plate is placed on top of the worktable 10, and then the cylinder telescopically presses the pressing block onto the steel plate. The machine also includes a telescopic plate assembly. The component 2 is connected to the air outlet component 1. The surface of the telescopic plate component 2 is connected to the movable plate component 3. The bottom of both sides of the movable plate component 2 is connected to the baffle component 4 near both ends. The movable plate component 2 is connected to the milling edge component 5 extending to the bottom of the movable plate component 3. The milling edge component 5 is provided with a collection structure below it. The collection structure includes a box sleeve 6 and a collection component 8 disposed in the box sleeve 6. The top of the box sleeve 6 is provided with opposing baffle components B7 near both sides. An air pump and a flue gas treatment device are provided between the collection component 8 and the air outlet component 1.

[0039] Reference Figure 1-10 A CNC steel plate milling machine includes a telescopic plate assembly 2 comprising a sleeve plate 210, a displacement groove on the top of the sleeve plate 210, and a fixed plate 220 slidably disposed in the displacement groove. A mounting hole is provided through the middle of the top of the fixed plate 220, and a telescopic rod 230 is disposed in the mounting hole. The bottom end of the telescopic rod 230 is connected to the middle position of the bottom end in the displacement groove. When the telescopic rod 230 extends or retracts downward, the sleeve plate 210 moves downward on the surface of the fixed plate 220 through the displacement groove.

[0040] Reference Figure 1-10 A CNC steel plate milling machine includes a movable plate assembly 3 comprising a displacement plate 310 connected to the bottom of a sleeve plate 210. Specifically, a screw is connected to the bottom end of a telescopic rod 230. The screw passes through the sleeve plate 210 and the displacement plate 310 and is locked by a nut, thus connecting the telescopic rod 230, the sleeve plate 210 and the displacement plate 310 together. A movable pressing wheel 320 is connected to the bottom of the displacement plate 310. The movable pressing wheel 320 includes two positioning blocks and a pulley. The pulley is rotatably connected between the two positioning blocks via a shaft. Thus, when the sleeve plate 210 is extended downward, it can drive the displacement plate 310 to move downward, causing the pulley to press against the steel plate placed on top of the worktable 10.

[0041] Reference Figure 1-10A CNC steel plate milling machine includes a baffle assembly A4 comprising a plate A410, with two mounting blocks 412 fixed to the top of the plate A410. The mounting blocks 412 are bolted to the top of a displacement plate 310, thus connecting the plate A410 to the displacement plate 310. A receiving groove A411 is formed in the bottom end of the plate A410. A plate B420 is slidably disposed within the receiving groove A411. A receiving groove B421 is formed in the bottom end of the plate B420. A plate C430 is slidably disposed within the receiving groove B421. A receiving groove C431 is formed in the bottom end of the plate C430. A plate D440 is slidably disposed within the receiving groove C431. Multiple springs A are provided in each of the receiving grooves A411, B421, and C431. Specifically, springs A are located in each of the receiving grooves A411 and B421. The connection method in the receiving groove C431 is illustrated by an example. For instance, spring A is in the receiving groove A411, with the top of spring A connected to the top of the receiving groove A411 and the bottom of spring A connected to the top of plate B420. In the initial state, under the action of spring A, plate B420 extends out of the receiving groove A411, plate C430 extends out of the receiving groove B421, and plate D440 extends out of the receiving groove C431. The bottom of plate D440 has a mounting groove 441, and a rotating rod 442 is rotatably installed in the mounting groove 441. Thus, when the displacement plate 310 moves downward so that the pulley presses on the steel plate placed on top of the worktable 10, the rotating rod 442 at the bottom of plate D440 is pressed against the steel plate on top of the worktable 1. When the displacement plate 310 moves, both the pulley and the rotating rod 442 roll and move on the steel plate.

[0042] Reference Figure 1-10 A CNC steel plate milling machine, the milling assembly 5 includes a mounting plate 510 connected to a sleeve plate 210, and a milling component 520 penetrating the surface of the mounting plate 510. The milling component 520 includes a servo motor connected to the surface of the mounting plate 510, and the output end of the servo motor penetrates the mounting plate 510 and is connected to a milling cutter. The milling cutter is located at the bottom of a displacement plate 310. When the displacement plate 310 descends and drives the milling component 520 to descend through the mounting plate 510, the milling cutter can contact the edge of the steel plate. A connecting plate A530 is fixed at the bottom end of the mounting plate 510.

[0043] Reference Figure 1-10A CNC steel plate milling machine includes a baffle assembly B7 comprising a plate a710 connected to a housing 6, a plate b720 slidably disposed within the top end of plate a710, a plate c730 slidably disposed within the top end of plate b720, and a plate d740 slidably disposed within the top end of plate c730. Each of the top ends of plates a710, b720, and c730 has a receiving groove D, and each receiving groove D contains multiple springs B. Plate b720 is located within plate a710. In the receiving groove D at the top, plate c730 is located in the receiving groove D at the top of plate b720, and plate d740 is located in the receiving groove D at the top of plate c730. Spring B can connect two adjacent plates at the top and bottom positions together, so that spring B can push the plate at the top upward. In this way, the top of the uppermost plate d740 in the baffle assembly B7 can push against the bottom of the displacement plate 310, thus preventing debris from falling into the outside of the collection box 810.

[0044] Reference Figure 1-10 A CNC steel plate milling machine is provided. A connecting plate B610 is fixed on the surface of the sleeve 6. The connecting plate B610 and the connecting plate A530 are locked together by bolts. The collecting assembly 8 includes a collecting box 810 slidably disposed in the sleeve 6. A positioning rod 820 is connected to the bottom of the collecting box 810. The positioning rod 820 includes two bearing plates. Each of the two bearing plates has a vertical plate at one end. A positioning plate is connected between the top ends of the two vertical plates. The sleeve 6 is vertically connected. When the collecting box 810 is placed into the sleeve 6 from the bottom end and the positioning rod 820 is located at the bottom of the sleeve 6, the two vertical plates and the positioning plate are located on the surface of the sleeve 6. Then, the positioning plate is bolted through and locked to the surface of the sleeve 6 to prevent the collecting box 810 from falling down from the sleeve 6.

[0045] The bottom center of the collection box 810 is connected to an external threaded ring 830, and an internal threaded connector 850 is threadedly connected to the outside of the external threaded ring 830. The internal threaded connector 850 has a filter screen A840 inside and is located at the bottom of the external threaded connector 830. The end of the internal threaded connector 850 away from the external threaded ring 830 is connected to an air inlet pipe, and the end of the air inlet pipe away from the internal threaded connector 850 is connected to the air inlet of the air pump. In this way, the air pump can draw gas from the collection box 810 through the air inlet pipe. The fumes generated during the milling operation are drawn into the collection box 810 and then pass through the external fumes treatment device. At the same time, the debris generated during the milling process falls into the collection box 810. The external fumes treatment device can be connected to the air inlet pipe. The gas drawn by the air pump is first treated by the fumes treatment device and then sent into the air supply pipe 110 by the air pump.

[0046] Reference Figure 1-10A CNC steel plate milling machine includes a collection box 810 with a filter element 9 inside. The filter element 9 includes two connecting frames 910, each with two vertical rods 911. A horizontal rod 912 connects the tops of the two vertical rods 911, making the connecting frame 910 an inverted concave rod shape. Multiple sets of limiting blocks are provided on each vertical rod 911, with two limiting blocks in each set. A filter screen B920 is provided between the two connecting frames 910. The filter screen B920 has two U-shaped grooves on both sides. The filter screens 0 are secured to the surface of the vertical rod 911 via a U-shaped groove and positioned between a set of limiting blocks. This allows multiple filter screens B920 to be engaged between the two connecting brackets 910. The filter screens B920 can filter debris, thus filtering debris carried in the flue gas and preventing debris generated during milling from entering the air intake pipe. There are at least three filter screens B920, and the filtration aperture of the three filter screens B920 decreases sequentially from top to bottom. This prevents debris from accumulating on a single filter screen B920 and causing blockage, which would hinder airflow.

[0047] Reference Figure 1-10 A CNC steel plate milling machine includes an air outlet assembly 1 comprising an air jet box 130 connected to a lower pressure member 13 and an air supply pipe 110 connected to the bottom of a top plate 12. The air supply pipe 110 and the air jet box 130 are connected via a connecting pipe 120. Both ends of the air supply pipe 110 are connected to air outlet pipes. The ends of the two air outlet pipes furthest from the air supply pipe 110 are connected to the air outlet end of an air pump. Thus, the air pump draws in flue gas, which passes through a flue gas treatment device, and then the air pump supplies the flue gas from the air outlet pipes back to the air supply pipes. In section 110, after the gas fills the gas supply pipe 110, it enters the jet box 130 through the connecting pipe 120 and is ejected from the inclined jet holes on the surface of the jet box 130. The bottom of the jet box 130 is lower than the bottom of the pressure block, so that when the pressure block presses on the steel plate, the bottom of the jet box 130 does not contact the top of the steel plate, and the jet holes on the jet box 130 are facing the edge of the steel plate. This can blow the debris into the collection box 810, and also has a certain cooling effect.

[0048] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

[0049] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

Claims

1. A CNC steel plate milling machine, comprising a worktable (10), with support plates (11) at both ends of the worktable (10), a top plate (12) on top of the two support plates (11), an automatic linear guide rail on top of the top plate (12), and a row of pressing parts (13) at the bottom of the top plate (12), characterized in that, It also includes a telescopic plate assembly (2) and an exhaust assembly (1). The surface of the telescopic plate assembly (2) is connected to a movable plate assembly (3), and baffle assemblies A (4) are connected to the bottom of both sides of the movable plate assembly (3) near both ends. A milling edge assembly (5) extending to the bottom of the movable plate assembly (3) is connected to the telescopic plate assembly (2). A collection structure is provided below the milling edge assembly (5), and the collection structure includes a box sleeve (6) and a collection assembly (8) set in the box sleeve (6). Baffle assemblies B (7) are provided opposite to each other at the top of the box sleeve (6) near both sides. An air pump and a flue gas treatment device are provided between the collection assembly (8) and the exhaust assembly (1). The telescopic plate assembly (2) includes a sleeve plate (210), the top of the sleeve plate (210) is provided with a displacement groove, and a fixed plate (220) is slidably provided in the displacement groove. The top center of the fixed plate (220) is provided with an installation hole, and a telescopic rod (230) is provided in the installation hole. The bottom end of the telescopic rod (230) is connected to the middle position of the bottom end in the displacement groove. The baffle assembly A (4) includes a plate A (410), and two mounting blocks (412) are fixed on the top of the plate A (410). The mounting blocks (412) are connected to the top of the displacement plate (310) by bolts. A receiving groove A (411) is provided in the bottom end of the plate A (410). A plate B (420) is slidably provided in the receiving groove A (411). A receiving groove B (421) is provided in the bottom end of the plate B (420). A plate C (430) is slidably provided in the receiving groove B (421). A receiving groove C (431) is provided in the bottom end of the plate C (430). A plate D (440) is slidably provided in the receiving groove C (431). Multiple springs A are provided in the receiving grooves A (411), B (421), and C (431). A mounting groove (441) is provided in the bottom end of the plate D (440), and a rotating rod (442) is rotatably provided in the mounting groove (441). The box sleeve (6) is fixed with a connecting plate B (610), wherein the connecting plate B (610) and the connecting plate A (530) are locked together by bolts; The collection component (8) includes a collection box (810) slidably disposed in the box sleeve (6), and a positioning rod (820) is connected to the bottom of the collection box (810). The positioning rod (820) includes two support plates, each of which has a vertical plate at one end, and a positioning plate is connected between the top ends of the two vertical plates. The collection box (810) has an external threaded ring (830) connected to the middle of its bottom, and an internal threaded connector (850) is connected to the outside of the external threaded ring (830) by a thread. The internal threaded connector (850) has a filter screen A (840) inside and is located at the bottom of the external threaded ring (830). The end of the internal threaded connector (850) away from the external threaded ring (830) is connected to an air inlet pipe. The collection box (810) is equipped with a filter element (9) inside. The filter element (9) includes two connecting frames (910). Each of the two connecting frames (910) includes two vertical rods (911). A horizontal rod (912) is connected between the top ends of the two vertical rods (911). Multiple sets of limiting blocks are provided on each vertical rod (911). There are two limiting blocks in each set of limiting blocks. A filter screen B (920) is provided between the two connecting frames (910). Two U-shaped grooves are opened on both sides of the filter screen B (920). The filter screen B (920) is stuck on the surface of the vertical rod (911) through the U-shaped grooves and is located between a set of limiting blocks. The air outlet assembly (1) includes an air jet box (130) connected to the lower pressure member (13) and an air supply pipe (110) connected to the bottom of the top plate (12). The air supply pipe (110) and the air jet box (130) are connected by a connecting pipe (120), and both ends of the air supply pipe (110) are connected to air outlet pipes.

2. The CNC steel plate milling machine according to claim 1, characterized in that, The movable plate assembly (3) includes a displacement plate (310) connected to the bottom of the sleeve plate (210), and a screw is connected to the bottom end of the telescopic rod (230). The screw passes through the sleeve plate (210) and the displacement plate (310) and is locked by a nut. The bottom of the displacement plate (310) is connected to a movable extrusion wheel (320), and the movable extrusion wheel (320) includes two positioning blocks and a pulley. The pulley is rotatably connected between the two positioning blocks through a shaft.

3. A CNC steel plate milling machine according to claim 1, characterized in that, The milling assembly (5) includes a mounting plate (510) connected to the sleeve plate (210), and a milling component (520) is passed through the surface of the mounting plate (510). The milling component (520) includes a servo motor connected to the surface of the mounting plate (510), and the output end of the servo motor passes through the mounting plate (510) and is connected to a milling cutter. The milling cutter is located at the bottom of the displacement plate (310), and a connecting plate A (530) is fixed at the bottom of the mounting plate (510).

4. A CNC steel plate milling machine according to claim 1, characterized in that, The baffle assembly B (7) includes a plate a (710) connected to the box sleeve (6), and a plate b (720) is slidably disposed in the top end of the plate a (710), a plate c (730) is slidably disposed in the top end of the plate b (720), and a plate d (740) is slidably disposed in the top end of the plate c (730). Each of the top ends of the plate a (710), plate b (720) and plate c (730) is provided with a receiving groove D, and each receiving groove D is provided with a plurality of springs B. The plate b (720) is located in the receiving groove D in the top end of the plate a (710), the plate c (730) is located in the receiving groove D in the top end of the plate b (720), and the plate d (740) is located in the receiving groove D in the top end of the plate c (730).

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