CN219666852U - Dust collection device for cutting plastic steel material - Google Patents

Abstract

The utility model relates to a dust collection device for cutting plastic steel materials, which is used for solving the defect that the existing cutting device cannot timely process cutting waste materials, and at least comprises a supporting table and a cutting assembly for cutting the plastic steel materials, wherein the dust collection assembly for collecting the waste materials generated by the cutting process is arranged in the tangential direction of the cutting edge of the cutting assembly; the two ends of the dust collecting pipeline are respectively provided with a clamping part which limits the communication state between the dust collecting pipeline and the dust collecting opening and the dust collecting driving piece.

Description

Dust collection device for cutting plastic steel material

Technical Field

The utility model relates to the technical field of plastic steel material processing equipment, in particular to a dust collection device for plastic steel material cutting.

Background

The plastic-steel door and window is made up by using polyvinyl chloride resin as main raw material, adding additives of a certain proportion of stabilizing agent, colouring agent, filling agent and UV-absorber, extruding them into the form by means of plastic equipment, then making them into door and window frame by means of cutting, welding or screw-connection. In practical use, in order to enhance the rigidity of the profile, a steel liner needs to be added into a cavity of the profile exceeding a certain length, and the composite profile manufactured in this way is called a plastic steel profile.

When the plastic steel profile is used for door and window processing, the plastic steel profile is usually required to be cut, and scraps, dust and other waste materials are generally generated in the cutting processing process. In particular, dust particles generated by friction between the cutting tool and the plastic steel profile are difficult to collect, are easy to diffuse in air, have high possibility of being inhaled by a processor by mistake while causing environmental pollution, and are extremely easy to cause harm to the health of the processor. In addition, dust particles are easier to absorb heat released by hot cutting operation to generate harmful gas, so that the damage to the environment and processing personnel in the production process is increased.

The utility model discloses a plastic steel section bar hot cutting device based on hot cutting is disclosed for CN218398268U, relates to plastic steel section bar cutting technical field, including the device base the fixed surface of cutting device base installs hot cutting device main part, one side of hot cutting device main part is provided with hot cutting platform, hot cutting platform fixed mounting is at the surface of cutting device base, the surface of hot cutting platform is provided with auxiliary limiting device. The hot cutting treatment mode adopted by the device can reduce the damage of the cutting surface, so that less resource waste is generated in the cutting process, but the hot cutting treatment leads to deformation or discoloration of the cutting edge of the plastic steel, and the attractiveness of the product is affected. In addition, the device does not have dust collection structure, and the waste material that produces when carrying out the cutting treatment of plastic steel section bar can't obtain timely processing, and especially the dust that takes place the diffusion easily and harmful gas are very liable to cause the injury to the healthy of production environment and processing personnel.

Disclosure of Invention

The utility model aims to provide a dust collection device capable of synchronously collecting waste materials in the plastic steel material cutting process, so as to solve the problem that dust and harmful gases generated in the plastic steel material cutting operation in the prior art cannot be collected and treated timely and effectively, and the dust and the harmful gases generated in the cutting treatment cause harm to the processing environment and the health of processing personnel.

The technical scheme adopted by the utility model is as follows: the dust collection device for cutting the plastic steel material at least comprises a supporting table and a cutting assembly for cutting the plastic steel material, and is characterized in that the dust collection assembly for collecting waste materials generated by the cutting is arranged in the tangential direction of the cutting edge of the cutting assembly, the dust collection assembly at least comprises a dust collection opening, a dust collection pipeline and a dust collection driving piece, the dust collection opening is arranged on the supporting surface of the supporting table in a mode that the projection of the opening surface of the dust collection opening in the tangential direction covers the projection range of the waste materials when the cutting assembly cuts the plastic steel material, one end of the dust collection opening, which is far away from the supporting surface of the supporting table, is connected with the dust collection pipeline, and one end of the dust collection pipeline, which is far away from the dust collection opening, is also connected with the dust collection driving piece; the two ends of the dust collection pipeline are respectively provided with a clamping part for limiting the communication state between the dust collection pipeline and the dust collection opening and the dust collection driving piece.

According to a preferred embodiment, the dust collection pipeline comprises an airflow channel and a magnetic suction cavity, wherein two ends of the airflow channel are respectively connected with the dust collection opening and the dust collection driving piece, and the magnetic suction cavity is arranged on the airflow channel in a mode of communicating with the airflow channel.

According to a preferred embodiment, the air inlet of the magnetic suction cavity is lower than the air outlet, and a magnetic suction piece is arranged at the inner bottom of the cavity of the magnetic suction cavity so as to adsorb waste materials trapped in the air flow; the inner cavity of the magnetic suction cavity close to the air outlet of the magnetic suction cavity is also provided with a striker plate, and the striker plate is obliquely arranged in the inner cavity of the magnetic suction cavity, so that air flow passing through the magnetic suction cavity impacts the striker plate.

According to a preferred embodiment, the exhaust end of the dust extraction drive remote from the dust collection duct is further connected with a filter chamber, and the exhaust duct of the dust extraction drive is inserted into the liquid environment of the filter chamber.

According to a preferred embodiment, the engaging portion includes a first annular buckle and a second annular buckle, wherein the first annular buckle and the second annular buckle are assembled in a sleeved manner, and a limiting member for limiting a connection state between the first annular buckle and the second annular buckle is further disposed on an outer wall of the second annular buckle.

According to a preferred embodiment, the limiting member comprises a limiting block, a connecting rod, an elastic member, a limiting shell and a sliding block, wherein the limiting shell is installed on the outer wall of the second annular buckle in a mode that the axis of the limiting shell is parallel to that of the second annular buckle, and the sliding block is arranged in the limiting shell in a mode that the sliding block translates along the axis of the limiting shell.

According to a preferred embodiment, a connecting rod penetrating through the limiting shell is movably connected to the surface of the sliding block, and one end of the connecting rod extending to the outside of the limiting shell is connected with the limiting block.

According to a preferred embodiment, the connecting rod is placed on a rod body inside the limiting shell and sleeved with the elastic piece so as to limit the length of the connecting rod in the limiting shell, wherein two ends of the elastic piece are respectively positioned on the inner wall of the limiting shell and the surface of the sliding block.

According to a preferred embodiment, the stop block adjustably fills the socket gap between the first and second annular catches in a manner that follows the movement of the connecting rod.

According to a preferred embodiment, the support table is further provided with a limiting table for limiting the plastic steel material, and the limiting table positions the plastic steel material on the working path of the cutting assembly.

The beneficial effects of the utility model are as follows:

the device can actively guide the waste sundries generated in the plastic steel material cutting process to perform directional movement and collect the waste sundries in the designated storage cavity, so that the working surface of the supporting table can always keep a relatively clean and tidy state in the cutting processing process, and the chips are prevented from entering parts and the inside of a mechanism to cause abnormal damage of equipment. In addition, this device can in time collect and handle dust particle and harmful gas that the cutting process produced, thereby avoided dust particle and harmful gas to cut the outside diffusion in processing area, avoid processing environment to receive the pollution, reduced the processing personnel mistake and inhaled the possibility of harmful waste material, guaranteed that the processing personnel is healthy. Finally, the device is used for giving short-term static electricity to the plastic steel material, so that plastic scraps generated by cutting treatment can be provided with static electricity, the dust is adsorbed on the surface of the plastic scraps, the dust is carried to perform directional movement under the action of air flow, the dust is separated from the air flow under the action of magnetic force in the magnetic suction cavity, and meanwhile, metal scraps such as steel and the like are separated under the action of magnetic force, so that the collection of particle scraps is realized. The device completes the separation of the waste materials, and the airflow with harmful gas components flows into the filter cavity, so that the separation treatment of the harmful gas is completed in a material blending mode.

Drawings

FIG. 1 is a schematic view of a preferred dust suction device for cutting plastic steel material according to the present utility model;

FIG. 2 is a schematic view showing a structure of a clamping portion of a dust suction device for cutting plastic steel material in a separated state;

fig. 3 is a schematic structural view of a preferred engaging portion of a dust suction device for cutting plastic steel material according to the present utility model after the engaging portion is abutted.

List of reference numerals

1: a support table; 2: a cutting assembly; 3: a dust collection assembly; 4: a limiting table; 21: a first slide rail mechanism; 22: cutting the support column; 23: a cutting mechanism; 31: a dust collection port; 32: a dust collection pipe; 33: a dust collection driving member; 34: an engagement portion; 35: a limiting piece; 36: a filter chamber; 321: an air flow channel; 322: a magnetic suction cavity; 323: a magnetic attraction piece; 324: a striker plate; 341: a first annular buckle; 342: the second annular buckle; 351: a limiting block; 352: a connecting rod; 353: an elastic member; 354: a limit shell; 355: a sliding block.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the drawings is only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

The technical solution provided by the present utility model will be described in detail by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is for aiding in understanding the present utility model, but is not intended to limit the present utility model. In some instances, some embodiments are not described or described in detail as such, as may be known or conventional in the art.

Furthermore, features described herein, or steps in all methods or processes disclosed, may be combined in any suitable manner in one or more embodiments in addition to mutually exclusive features and/or steps. It will be readily understood by those skilled in the art that the steps or order of operation of the methods associated with the embodiments provided herein may also be varied. Any order in the figures and examples is for illustrative purposes only and does not imply that a certain order is required unless explicitly stated that a certain order is required.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein, where appropriate (without making up a paradox), include both direct and indirect connections (couplings).

The following detailed description refers to the accompanying drawings.

Example 1

The utility model provides a dust collection device for cutting plastic steel materials, which is used for collecting scraps, dust and harmful gases generated by processing in real time in the process of cutting plastic steel materials, and classifying the collected scraps so as to eliminate the damage of final products to the environment and the health of processing personnel. The dust extraction may comprise a support table 1, a cutting assembly 2, a dust extraction assembly 3 and a stop table 4.

According to a specific embodiment shown in fig. 1, a cutting assembly 2 and a limiting table 4 are positioned and mounted on the working surface of a support table 1. The limiting table 4 can adjust the fixed positions of the plastic steel material in the directions of the transverse axis and the longitudinal axis of the working surface, so that the cutting assembly 2 can complete cutting treatment of various different edge shapes of the plastic steel material in the process of approaching the working surface. The cutting assembly 2 is capable of multi-directional adjustment over the work surface such that the cutting assembly 2 is capable of cutting the plastic steel material defined by the stop table 4 along a prescribed path. The dust collection assembly 3 is installed to one side of the working face of brace table 1 for dust collection assembly 3 can in time absorb the waste material such as piece, dust and harmful gas that exist on the working face of spacing platform 4, prevents that the waste material from piling up from appearing on the working face, avoids dust and harmful gas to take place the diffusion in the processing environment, thereby has improved the security of cutting production process.

Preferably, the supporting table 1 may be a movable table, and the surface of the movable table is provided with a plurality of mounting holes, so that the cutting assembly 2, the dust collection assembly 3 and the limiting table 4 are respectively mounted at different positions, and the cutting assembly 2 can move along a specific path under the control of a processing person, thereby cutting the plastic steel material limited by the limiting table 4. In addition, the dust collection assembly 3 can absorb the waste generated during the cutting treatment of the cutting assembly 2 in real time, so that the waste can be collected in time, the phenomenon that the movement of equipment is affected due to accumulation of the waste on a working surface is avoided, and meanwhile, the diffusion of dust and harmful gas can be effectively prevented.

Preferably, the cutting assembly 2 comprises a first slide rail mechanism 21, a cutting support column 22 and a cutting mechanism 23. The first slide rail mechanism 21 can translate along the length direction of the supporting table 1, so that the cutting mechanism 23 can cut plastic steel materials with the width exceeding the maximum linear length of the cutting edge. Preferably, the maximum linear length of the cutting edge refers to the single longest cutting distance that can be accomplished by an arcuate surface of the cutting wheel of the cutting mechanism 23 exposed outside the cutting shell. Preferably, the cutting support column 22 is supported on the sliding surface of the first sliding rail mechanism 21 in a manner substantially perpendicular to the working surface, so that the sliding of the first sliding rail mechanism 21 can drive the cutting support column 22 to translate synchronously. Preferably, the cutting mechanism 23 is rotatably connected with an end of the cutting support column 22 away from the first slide rail mechanism 21, and a torsion spring is provided at a connection position of the cutting mechanism 23 and the cutting support column 22, so that the cutting mechanism 23 is suspended above the working surface and approaches the working surface under the pressing action of the processing personnel. Preferably, the pressing operation of the processing personnel is to control the cutting mechanism 23 to rotate around the connection position of the cutting mechanism and the cutting support column 22, so that the movement of the cutting mechanism 23 can be decomposed into translation along the length direction of the support table 1 and lifting along the height direction of the support table 1, thereby realizing the multidirectional movement of the cutting mechanism 23 on the support table 1, and enabling the cutting mechanism to cut plastic steel materials with different width sizes. It is further preferred that the cutting mechanism 23 is in rotational connection with an axial slide on the cutting support column 22, such that translation of the axial slide on the axis of the cutting support column 22 also enables individual height adjustment of the cutting mechanism 23, such that the cutting mechanism 23 also enables cutting of plastic steel material of different thickness. Preferably, the cutting mechanism 23 can be directly selected from the existing plastic steel cold cutting machine, and the cutting assembly 2 can be formed by connecting the cutting machine with the corresponding adjusting structure.

Preferably, a dust collection unit 3 for collecting waste generated by the cutting process is provided in a tangential direction of the cutting edge of the cutting unit 2. Specifically, the cutting edge of the cutting assembly 2 refers to the arcuate edge of the arcuate surface of the cutting wheel exposed outside the cutting shell. The cutting mechanism 23 moves downward from above the working surface to contact the plastic steel material under the control of the operator, so that the tangential direction of the cutting edge is any straight line in the sector area at an acute angle to the longitudinal direction of the working surface. Preferably, a straight line formed by the intersection of the sector area and the working surface is parallel to a straight line in the length direction of the working surface, and the sector area and the working surface are perpendicular to each other.

Preferably, the dust collection assembly 3 includes a dust collection port 31, a dust collection duct 32, a dust collection driving member 33, an engagement portion 34, and a stopper 35. The dust suction opening 31 is disposed above the edge of the supporting surface of the supporting table 1 in such a manner that the projection of the opening surface in the tangential direction covers the projection range of the waste material when the cutting assembly 2 cuts the plastic steel material, thereby completing the collection of the waste material existing on the supporting surface of the supporting table 1. Specifically, in the process of cutting the plastic steel material, the contact point between the cutting wheel and the plastic steel material of the cutting assembly 2 will change, so that the tangential direction corresponding to the contact point will also change, i.e. the direction in which the cutting wheel drives the waste material to be away from the plastic steel material when the cutting assembly 2 cuts the plastic steel material, so that the dust collection opening 31 needs to encompass all the tangential directions forming the whole tangential fan surface, and the waste material flying out along the tangential direction can enter the dust collection opening 31. Preferably, the collection of tangential directions corresponding to all the intersections between the cutting edges and the plane where the plastic steel material is located is the casting range of the waste. Preferably, when the opening plane of the dust collection opening 31 is perpendicular to the working surface, the maximum distance between the intersection point of the tangent line and the cylindrical contour defined by the working surface in the height direction and the working surface is the maximum height of the opening of the dust collection opening 31. Preferably, the width of the dust collection opening 31 may be greater than or equal to the width of the working surface, so that it can effectively encompass the projection range of the waste material generated when the plastic steel material is cut, and therefore, during the directional movement of the air flow generated by the dust collection driving member 33, the waste material generated by the working area of the cutting assembly 2 follows the air flow into the dust collection opening 31 in a manner of being entrained by the air flow. Further preferably, the opening surface of the dust collection opening 31 can be set to an intersection angle smaller than 90 ° with the working surface, so that the opening surface is inclined in a range right above the working surface, the opening height is reduced according to a tangential path, the actual opening size of the dust collection opening 31 is reduced, the airflow flowing in the dust collection opening 31 can have a larger flow velocity in a smaller pipe diameter channel, the suction force of the dust collection assembly 3 on the working surface is improved, and the collection of waste is accelerated.

Preferably, the end of the dust collection port 31 away from the support surface of the support table 1 is connected with a dust collection pipe 32, and the end of the dust collection pipe 32 away from the dust collection port 31 is also connected with a dust collection driving member 33. The driving force generated by the dust collection driving member 33 can control the air in the dust collection opening 31 and the dust collection pipeline 32 to flow directionally, so that the air in a certain space range above the supporting surface 1 is driven to flow in the same direction under the action of pressure difference.

Preferably, the dust collection duct 32 includes an air flow passage 321 and a magnetic suction chamber 322. Both ends of the airflow path 321 are connected to the dust collection port 31 and the dust collection driving member 33 via the engaging portions 34, respectively. The air flow channel 321 at least comprises two sections of pipe bodies, and the two sections of pipe bodies are respectively arranged on the inlet and the outlet of the magnetic suction cavity 322, so that the air flow channel 321 and the magnetic suction cavity 322 form a communicated air flow channel. Preferably, the air inlet of the magnetic suction chamber 322 is lower than the air outlet, and a magnetic suction member 323 is provided at the inner bottom of the chamber thereof to adsorb waste entrained in the air flow. Preferably, the distance between the air inlet and the bottom of the chamber is smaller than the distance between the air outlet and the bottom of the chamber, so that there is an ascending course of the air flow entering the magnetic attraction chamber 322, which undoubtedly increases the continued movement of the waste material following the air flow, thereby achieving separation of the waste material. Preferably, the magnetic attraction member 323 disposed at the inner bottom can generate traction force on the electrostatically charged scrap and the metal scrap such as steel, further helping the scrap to be separated from the air flow, thereby realizing that the magnetic attraction chamber 322 can filter most of the scrap. Preferably, a baffle 324 is also provided in the inner cavity of the magnetic suction cavity 322 near the air outlet thereof, and the baffle 324 is obliquely installed in the inner cavity of the magnetic suction cavity 322 such that the air flow passing through the magnetic suction cavity 322 hits the baffle 324. Preferably, the baffle 324 is provided with a groove on its surface to intercept the rising of the air flow along the plate surface, so that the residual waste carried in the air flow can enter the groove when rising along the inner cavity space to the air outlet position, and the unseparated particle waste cannot continue to rise along the obliquely arranged plate surface, so that the waste is intercepted in the magnetic suction cavity 322.

Preferably, the suction driving member 33 may use an existing high-power cleaner, and both ends of the cleaner are connected to the suction driving member 33 and the filter chamber 36, respectively. The suction driving member 33 is arranged to provide a directional flow driving force for the air flow of the suction assembly 3, so that the air flow generated by the suction driving member 33 is capable of sucking waste material on the working surface into the suction assembly 3. Preferably, the filter chamber 36 has stored therein a liquid capable of absorbing the harmful gases such that after the gas stream enters the liquid, the harmful gases dissolve in the liquid such that the final product is simply air. For example, plastic particles are rubbed and heated to produce HCl, which is a hazardous gas, and depending on the nature of the gas being readily soluble in water, some water is stored in the filter chamber 36, ultimately producing a hydrochloric acid solution of lower purity.

As shown in fig. 2 and 3, the engagement portion 34 is capable of limiting the communication state between the dust collection pipe 32 and the dust collection port 31 and the dust collection driving member 33 while connecting the dust collection pipe 32 and the dust collection port 31 and the dust collection driving member 33, that is, when the engagement state of the engagement portion 34 is associated with the communication state between the dust collection pipe 32 and the dust collection port 31 and the dust collection driving member 33.

Preferably, the engagement portion 34 includes a first annular buckle 341 and a second annular buckle 342. The first annular buckle 341 and the second annular buckle 342 are assembled in a sleeving manner. Preferably, a circular baffle plate for limiting the unidirectional circulation of the pipeline is installed in the first annular bayonet 341, and a supporting rod capable of supporting the circular baffle plate is arranged at the end of the second annular buckle 342 inserted into the first annular buckle 341. Preferably, a stopper 35 for limiting the connection state between the first annular buckle 341 and the second annular buckle 342 is further provided on the outer wall of the second annular buckle 342.

Preferably, the stopper 35 includes a stopper 351, a connection rod 352, an elastic member 353, a stopper case 354, and a slider 355. It is further preferred that the limit housing 354 is mounted on the outer wall of the second annular clasp 342 with its axis parallel to the axis of the second annular clasp 342, and that the slider 355 is disposed within the limit housing 354 in such a way that it translates along the axis of the limit housing 354. Preferably, the surface of the slider 355 is movably connected with a connecting rod 352 penetrating through the limiting shell 354, and one end of the connecting rod 352 extending to the outside of the limiting shell 354 is connected with the limiting block 351. Further preferably, the stopper 351 defines its relative position with the connection rod 352 by an elastic stopper such as a torsion spring. Preferably, the connection rod 352 is placed on a rod body inside the limiting case 354 to be sleeved with the elastic member 353 so as to limit the length of the connection rod 352 in the limiting case 354. Preferably, the spring 353 shown in FIGS. 2 and 3 is in a compressed state. The elastic member 353 in fig. 2 is further compressed under the pulling of an external force, so that the stopper 351 is located outside the second annular buckle 341. When the external force is removed, the elastic member 353 rebounds to a certain extent, so that at least part of the stopper 351 enters the second annular buckle 341. Specifically, both ends of the elastic member 353 are positioned on the inner wall of the limit case 354 and the surface of the slider 355, respectively. The stopper 351 is movable following the connecting rod 352 such that it adjustably fills the socket gap between the first annular buckle 341 and the second annular buckle 342. Preferably, the end of the first annular buckle 341 is provided with a collar that is larger than its annular outer diameter, so that the stop 351 can further limit the length of the first annular buckle 341 inserted into the second annular buckle 342 in such a way that it abuts against the collar.

Preferably, the supporting platform 1 is further provided with a limiting platform 4 for limiting the plastic steel material, and the limiting platform 4 positions the plastic steel material on the working path of the cutting assembly 2. Specifically, the limiting table 4 can fix the plastic steel material in the width direction and the length direction of the workbench, so that the position to be cut of the plastic steel material coincides with the working path of the cutting assembly 2. Preferably, the limiting table 4 further includes a FRASER static generator capable of adding static electricity to the plastic steel material fixed to the limiting table 4, so that plastic particles generated by cutting thereof have static electricity to be absorbed by the magnetic attraction member 323.

The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the utility model is defined by the claims and their equivalents. Throughout this document, the word "preferably" is used in a generic sense to mean only one alternative, and not to be construed as necessarily required, so that the applicant reserves the right to forego or delete the relevant preferred feature at any time.

Claims (8)

1. A dust collection device for cutting plastic steel materials at least comprises a supporting table (1) and a cutting assembly (2) for cutting plastic steel materials, and is characterized in that the cutting assembly (2) is provided with a dust collection assembly (3) for collecting waste materials generated by cutting in the tangential direction of a cutting edge,

the dust collection assembly (3) at least comprises a dust collection opening (31), a dust collection pipeline (32) and a dust collection driving piece (33), the dust collection opening (31) is arranged on the supporting surface of the supporting table (1) in a mode that the projection of the opening surface of the dust collection opening on the tangential direction covers the projection range of waste materials when the cutting assembly (2) cuts plastic steel materials,

one end of the dust collection opening (31) far away from the supporting surface of the supporting table (1) is connected with the dust collection pipeline (32), and one end of the dust collection pipeline (32) far away from the dust collection opening (31) is also connected with the dust collection driving piece (33);

two ends of the dust collection pipe (32) are respectively provided with an engaging part (34) for limiting the communication state between the dust collection pipe and the dust collection opening (31) and the dust collection driving piece (33);

the dust collection pipeline (32) comprises an airflow channel (321) and a magnetic suction cavity (322), wherein two ends of the airflow channel (321) are respectively connected with the dust collection opening (31) and the dust collection driving piece (33), and the magnetic suction cavity (322) is arranged on the airflow channel (321) in a mode of being communicated with the airflow channel (321);

the air inlet of the magnetic suction cavity (322) is lower than the air outlet, and a magnetic suction piece (323) is arranged at the inner bottom of the cavity of the magnetic suction cavity so as to adsorb waste materials wrapped in the air flow;

and a baffle plate (324) is further arranged in the inner cavity of the magnetic suction cavity (322) close to the air outlet of the magnetic suction cavity, and the baffle plate (324) is obliquely arranged in the inner cavity of the magnetic suction cavity (322) so that air flow passing through the magnetic suction cavity (322) impacts the baffle plate (324).

2. A suction device for cutting plastic steel material according to claim 1, characterized in that the suction drive (33) is further connected with a filter chamber (36) at its exhaust end remote from the dust collecting duct (32), and that the exhaust duct of the suction drive (33) is inserted into the liquid environment of the filter chamber (36).

3. A suction device for cutting plastic steel material, as in claim 2, characterized in that said engagement portion (34) comprises a first annular clasp (341) and a second annular clasp (342), wherein,

the first annular buckle (341) and the second annular buckle (342) are assembled in a sleeving manner,

and a limiting piece (35) for limiting the connection state between the first annular buckle (341) and the second annular buckle (342) is further arranged on the outer wall of the second annular buckle (342).

4. A dust extraction device for cutting plastic steel material as claimed in claim 3, wherein,

the limiting piece (35) comprises a limiting block (351), a connecting rod (352), an elastic piece (353), a limiting shell (354) and a sliding block (355),

the limiting shell (354) is mounted on the outer wall of the second annular buckle (342) in a mode that the axis of the limiting shell is parallel to the axis of the second annular buckle (342), and the sliding block (355) is arranged in the limiting shell (354) in a mode that the sliding block translates along the axis of the limiting shell (354).

5. The dust collection device for cutting plastic steel materials according to claim 4, wherein a connecting rod (352) penetrating through the limiting shell (354) is movably connected to the surface of the sliding block (355), and one end of the connecting rod (352) extending to the outside of the limiting shell (354) is connected with the limiting block (351).

6. The dust suction apparatus for plastic steel material cutting as claimed in claim 5, wherein the connection rod (352) is placed on a rod body inside the limiting case (354) to be sleeved with the elastic member (353) so as to limit the length of the connection rod (352) inside the limiting case (354), wherein,

both ends of the elastic piece (353) are respectively positioned on the inner wall of the limit shell (354) and the surface of the sliding block (355).

7. A suction device for cutting plastic steel material according to claim 6, characterized in that the stop (351) adjustably fills the socket gap between the first annular clasp (341) and the second annular clasp (342) in a manner that follows the movement of the connecting rod (352).

8. A dust extraction device for cutting plastic steel material according to claim 7, characterized in that the support table (1) is further provided with a limiting table (4) for limiting the plastic steel material, the limiting table (4) positioning the plastic steel material on the working path of the cutting assembly (2).