A dust treatment device for circuit board cutting

Abstract

The present invention relates to the field of circuit board cutting and processing, and provides a dust treatment device for circuit board cutting and processing, comprising: a base fixedly installed at the lower part of the cutting device; a hollow carrier plate, arranged on the base; an exhaust pipe, arranged on the side wall of the hollow carrier plate, and exhausting air from the inside to the outside of the lower part of the hollow carrier plate; an exhaust sleeve frame, on which an exhaust square pipe extending from the side wall is provided, which is arranged on the cutting axis of the cutting device and moves with the cutting axis; a mounting ring, installed in the exhaust sleeve frame; a plurality of air jet pipes, which are evenly spaced and arranged on the mounting ring; and a conical air jet nozzle, which is installed at the air outlet end of the air jet pipe. The present invention provides an exhaust sleeve frame that moves with the cutting axis and a conical air jet nozzle installed in the exhaust sleeve frame, so that dust can be simultaneously sucked from the upper and lower sides of the circuit board during the process of the cutting device cutting the circuit board, thereby collecting cutting dust to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the field of circuit board cutting and processing, and in particular to a dust treatment device for circuit board cutting and processing. Background Art

[0002] After the circuit board is made, it is necessary to use the board cutting equipment to cut the finished bare board into individual independent boards that can be used directly, and then package them. Since the circuit board is made of a combination of different materials, it is very easy to generate fine dust particles during the board cutting process. Inhaling these dusts will have an impact on health. If they adhere to the circuit board, they will affect the use effect in subsequent use. Therefore, the dust generated during the cutting process of the circuit board needs to be collected and processed as necessary.

[0003] The existing dust removal method is mainly to set the bottom of the cutting table in a hollow manner, and to set a plurality of exhaust channels at the bottom of the cutting table, so as to extract the dust generated in the cutting process from the bottom. However, this method still has the problem of some dust floating out during use. The main reason for this problem is that the gaps generated in the process of cutting the circuit board will cause branch airflow vortices in the main airflow that originally circulates downward, and will be affected by the shape structure of the bottom of the cutting table, the circuit board itself, and the circuit board clamping fixture and other objects. The formed branch airflow vortex will entrain some dust to circulate in the exhaust channel, and some of the dust entrained in the branch airflow vortex will flow back from other channel openings and float out, which results in that some dust still cannot be effectively cleaned. Summary of the invention

[0004] The present invention aims to solve the technical problems existing in the above-mentioned prior art. To this end, the present invention provides a dust treatment device for circuit board cutting processing.

[0005] To achieve the above-mentioned purpose, the present invention provides a dust treatment device for circuit board cutting and processing, comprising: a base fixedly installed at the lower part of the cutting device; a hollow carrier plate, which is arranged on the base; an exhaust pipe, which is arranged on the side wall of the hollow carrier plate and exhausts air from the inside to the outside from the lower part of the hollow carrier plate; an exhaust sleeve frame, on which an exhaust square pipe extending from the side wall is provided, the exhaust sleeve frame is arranged on the cutting axis of the cutting device and moves with the cutting axis; a mounting ring, which is installed in the exhaust sleeve frame; a plurality of air jet pipes are evenly arranged on the mounting ring; a conical air jet nozzle is installed at the air outlet end of the air jet pipe; the conical air jet nozzles are arranged circumferentially around the cutting axis, and the plurality of conical air jet nozzles are bent and inclined and arranged and face directly below the processing axis; when the exhaust sleeve frame performs exhaust in its area, the air jet pipe placed in the exhaust sleeve frame continuously and intermittently ejects airflow.

[0006] As a further improvement of the scheme, the hollow carrier plate includes: a plurality of strip-shaped openings evenly spaced downward from the top thereof; guide plates evenly spaced in the strip-shaped openings; a sealing frame evenly spaced installed at the bottom of the strip-shaped openings, and the exhaust pipe is connected to the side wall of the sealing frame.

[0007] As a further improvement of the solution, a lower portion of the guide vane is provided with a curved extension portion extending obliquely downward.

[0008] As a further improvement of the solution, the sealing frames are arranged symmetrically on the hollow carrier plate, the exhaust pipes are arranged on both sides of the hollow carrier plate according to the arrangement of the sealing frames, and the curved extension parts arranged at the lower part of the guide plate are respectively facing the exhaust pipes arranged on both sides.

[0009] As a further improvement of the scheme, it also includes: a flow limiting plate installed at the bottom of the exhaust sleeve frame; a receiving hole is opened in the middle of the flow limiting plate to accommodate the lower part of the cutting shaft passing through, and strip-shaped flow limiting ports are opened around the receiving hole.

[0010] As a further improvement of the solution, it also includes: a leak-proof bristle frame installed at the lower part of the vacuum sleeve frame; and flexible bristles are arranged around the bottom edge of the leak-proof bristle frame.

[0011] As a further improvement of the solution, it also includes: an electric push rod installed on the cutting shaft; and a supporting member installed on the vacuum sleeve frame and pushed by the electric push rod.

[0012] As a further improvement of the scheme, it also includes: positioning protrusions, which are arranged around the top of the hollow carrier plate; a positioning frame, which has holes on its four sides that fit the positioning protrusions, and the holes are aligned with the positioning protrusions and placed on the hollow carrier plate; and a plurality of strip guide openings are arranged on the positioning frame.

[0013] As a further improvement of the scheme, it also includes: an air inlet connecting pipe connected to the air exhaust square pipe; a conical outer sleeve, which is connected to the end of the air inlet connecting pipe by an oblique cut of its circular side wall; a limiting cone installed in the conical outer sleeve; a solid collection box screwed on the tip of the cone of the conical outer sleeve; an outlet pipe is provided in the middle of the limiting cone, and a gap is left between the limiting cone and the conical outer sleeve.

[0014] As a further improvement of the solution, it also includes: separate plates, which are evenly spaced and arranged on the bottom plate of the solid collection box.

[0015] The present invention brings the following effects:

[0016] 1. The present invention provides an exhaust sleeve frame that moves with the cutting axis and a conical air nozzle installed in the exhaust sleeve frame, and is used together with a hollow carrier plate. The dust generated in the process of the cutting device cutting the circuit board is sucked from both the upper and lower sides at the same time, so as to effectively collect the generated dust and avoid the leakage of dust. At the same time, the intermittent air jet of the conical air nozzle has an excellent separation effect on the dust adhered to the circuit board.

[0017] 2. The curved extension portion provided on the guide plate of the present invention can prevent the backflow of air in the exhaust channel and the flying out of some dust during the air extraction process at the lower part of the hollow carrier plate; the symmetrical arrangement of the sealing frame can make up for the shortcoming of insufficient suction force in the area far away from one end of the exhaust pipe due to the length of the sealing frame.

[0018] 3. The flow limiting plate arranged on the exhaust sleeve of the present invention can limit the air intake of the exhaust sleeve to achieve a greater suction force, and the multiple flow limiting ports can capture and collect the escaping dust caused by the airflow ejected from the conical air nozzle; the leak-proof rough frame can gather the dust generated during the cutting process in a fixed area, and at the same time clean the residual dust on the circuit board during the movement of the cutting axis.

[0019] 4. The conical outer sleeve, limiting cone and outlet pipe provided in the present invention cooperate with each other to separate the solid and gas of the sucked gas carrying dust particles, and the solid particles in the air are deposited to the bottom through the cyclone, and the air is discharged along the outlet pipe. In this way, the filter of the exhaust equipment can be prevented from being clogged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a complete schematic diagram of the present invention.

[0021] Figure 2 For the present invention Figure 1 Schematic diagram from another perspective.

[0022] Figure 3 The figure is a schematic diagram of the interior of the vacuum casing of the present invention after a side section view.

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of component disassembly is shown.

[0024] Figure 5 This is a schematic diagram of the interior of the hollow carrier plate of the present invention after disassembly.

[0025] Figure 6 It is a schematic side cross-sectional view of the hollow carrier plate of the present invention.

[0026] Figure 7 It is a cross-sectional schematic diagram of the conical outer sleeve, the limiting cone, the lead-out pipe and the solid collection box of the present invention.

[0027] The corresponding relationship between the reference numerals and the names of the components in the accompanying drawings is as follows:

[0028] 100-cutting device, 200-cutting shaft;

[0029] 1-base, 2-hollow carrier plate, 3-exhaust pipe, 4-exhaust frame, 41-exhaust square pipe, 5-installation ring, 6-injection pipe, 61-conical injection nozzle;

[0030] 21-strip opening, 22-guide plate, 221-bent extension portion, 23-sealing frame;

[0031] 7-flow limiting plate, 71-accommodating hole, 72-flow limiting port;

[0032] 8- Anti-leakage hair frame;

[0033] 9-electric push rod, 91-supporting member;

[0034] 10-positioning protrusion, 101-positioning frame, 102-guiding opening;

[0035] 11-air inlet pipe, 12-conical outer sleeve, 13-restriction cone, 131-lead pipe, 14-solid collection box;

[0036] 15-base plate, 151-split plate. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The present invention specifically discloses a dust treatment device for circuit board cutting and processing, such as Figure 1-Figure 6 As shown, it comprises: a base 1 fixedly mounted at the bottom of a cutting device 100, wherein the cutting device 100 is an ordinary cutting device that can be obtained by conventional means, and has a main drive shaft capable of lateral movement and a cutting shaft 200 mounted on the main drive shaft for up and down movement, and milling cutters of different sizes can be mounted on the cutting shaft 200 to achieve cutting of specified requirements, and a hollow carrier plate 2 is fixedly mounted on the base 1, and a circuit board to be cut can be placed on the hollow carrier plate 2, and then the cutting cutter is driven by the cutting shaft 200 to complete the cutting, and in order to deal with the powder waste generated during the cutting process, a plurality of exhaust pipes 3 are arranged on the side wall of the hollow carrier plate 2, and the exhaust pipes 3 exhaust air from the bottom of the hollow carrier plate 2 from the inside to the outside, so that the powder waste generated during the cutting process will be sucked away by the suction force generated at the bottom of the hollow carrier plate 2; wherein, according to Figure 5 As shown, the hollow carrier plate 2 is composed of two plates that can be separated from each other. The upper plate is provided with a plurality of strip-shaped openings 21 spaced evenly from the top to the bottom. Guide vanes 22 are fixedly installed evenly in the strip-shaped openings 21. The main function of the guide vanes 22 is to divide the ventilation area of ​​the strip-shaped openings 21 to form a plurality of ventilation channels, so as to avoid the formation of random airflow vortices during the air extraction process, thereby affecting the dust extraction effect. A sealing frame 23 is fixedly installed at the bottom of the strip-shaped openings 21, and the air extraction pipe 3 is connected to the side wall of the sealing frame 23. Figure 6 As shown, after the exhaust pipe 3 is exhausted, the air at the upper part of the hollow carrier plate 2 flows downward into the sealing frame 23 and is finally exhausted from the exhaust pipe 3; Figure 6 As shown, in the process of airflow flowing along the sealing frame 23, the airflow will pass through the bottom of the multiple ventilation channels divided by the guide plate 22, and will be disturbed by the bottom of the guide plate 22, and an airflow vortex will be formed in the bottom area of ​​the guide plate 22, and part of the airflow will flow back and forth upward. To avoid this situation, a curved extension portion 221 extending obliquely downward is provided at the lower part of the guide plate 22. The curved extension portion 221 can effectively hinder the formation of airflow vortices and prevent airflow backflow; wherein, according to Figure 6 As shown, if the sealing frame 23 is too long, the area far away from one end of the exhaust pipe 3 will have insufficient suction force. For this reason, the sealing frames 23 are symmetrically arranged on the hollow carrier plate 2, and the exhaust pipes 3 are arranged on both sides of the hollow carrier plate 2 according to the arrangement distribution of the sealing frames 23 and connected to the sealing frames 23 on both sides. In this way, the problem of insufficient suction force in local areas can be effectively avoided. Correspondingly, the arrangement direction of the curved extension portion 221 on the guide plate 22 should also follow the arrangement of the sealing frame 23 and be divided into two different directions, which need to be oriented toward the positions of the exhaust pipes 3 on both sides.

[0040] In the process of processing the powder waste by the hollow carrier plate 2, there is still a problem that some powder waste will float out of the area around the cutting shaft 200. For this reason, an exhaust sleeve frame 4 is installed on the movable cutting shaft 200. The exhaust sleeve frame 4 is sleeved on the lower part of the cutting shaft 200, and the milling cutter on the cutting shaft 200 is within the covering range of the exhaust sleeve frame 4. The exhaust sleeve frame 4 is provided with an exhaust square tube 41 extending from the side wall. The exhaust sleeve frame 4 moves with the movement of the cutting shaft 200. When in use, the exhaust square tube 41 is connected to an external exhaust. The air extraction device can be an air extraction pump with a filtering device, and the air extraction square tube 41 can be connected to the air extraction pump through an air pipe; wherein, during the circuit board cutting process, some powder waste will not float away, but will adhere to the circuit board. For this part of the attached powder, a mounting ring 5 is fixedly installed in the air extraction frame 4, and four air injection pipes 6 are evenly arranged on the mounting ring 5, and the outlet end of the air injection pipe 6 is fixedly connected to a conical air injection nozzle 61, which is arranged circumferentially around the cutting axis 200, and the four conical air injection nozzles 61 are ... The air nozzle 61 is bent and tilted so that the airflows ejected from the conical air nozzle 61 converge at the same position, and the common convergence position is the vertex of the milling cutter on the cutting shaft 200, that is, the area directly below the milling cutter on the cutting shaft 200; specifically, after the circuit board is fixed on the hollow carrier 2, before the cutting shaft 200 cuts the circuit board, the hollow carrier 2 and the exhaust frame 4 both start to exhaust air, and then the cutting shaft 200 performs the cutting operation, and part of the dust generated during the cutting process is extracted from the bottom of the hollow carrier 2, and the other part of the dust is discharged through the hollow carrier 2. The powder waste on the circuit board is removed by the vacuum sleeve 4 which moves along with the cutting axis 200. When the vacuum sleeve 4 is vacuuming, the jet pipe 6 in the vacuum sleeve 4 continuously and intermittently ejects airflow. Specifically, it can be set to eject high-pressure gas once every second. The main purpose of this is to separate the powder waste attached to the circuit board and enable it to float up. After the dust floats up, it can be sucked away by suction, so as to solve the problem of residual powder waste on the circuit board. The separated powder waste leaves through the vacuum sleeve 4 and the hollow carrier board 2.

[0041] The present invention provides an exhaust sleeve 4 that moves with the cutting shaft 200 and a conical air nozzle 61 installed in the exhaust sleeve 4, and is used together with the hollow carrier board 2. The dust generated in the process of cutting the circuit board by the cutting device 100 can be effectively collected. The upper and lower sides of the circuit board are simultaneously sucked to collect the cutting dust to the greatest extent, thereby avoiding the problem of dust floating out. At the same time, the intermittent air jetting of the conical air nozzle 61 has an excellent separation effect on the dust adhering to the circuit board.

[0042] In a specific embodiment, Figure 3 and Figure 4As shown, in order to limit the air intake of the air extraction sleeve frame 4 and thus achieve a greater suction force in a local area, a flow limiting plate 7 is fixedly installed at the inner bottom of the air extraction sleeve frame 4. A receiving hole 71 through which the milling cutter of the cutting shaft 200 passes is opened in the middle of the flow limiting plate 7. The milling cutter passes through the receiving hole 71. A strip-shaped flow limiting opening 72 is opened around the receiving hole 71 on the flow limiting plate 7. External air needs to enter the air extraction sleeve frame 4 through the receiving hole 71 and the flow limiting opening 72 on the flow limiting plate 7. After increasing the air flow rate in this way, a greater suction force is generated for the suction of dust. Among them, in order to be able to gather the dust generated during the cutting process in a fixed area and effectively clean the stubbornly attached dust on the circuit board, a leak-proof hair border 8 is also fixedly installed at the lower part of the air extraction sleeve frame 4. The leak-proof hair border 8 is arranged with flexible bristles around the bottom edge. The bristles can be plastic bristles or animal bristles. During the air extraction process, air enters through the gaps between the bristles, and the leak-proof hair border 8 can also move together with the cutting shaft 200. During the movement, the ends of the bristles press against the circuit board, thereby gathering the dust generated by cutting in the frame and also being able to sweep and remove the stubborn dust attached to the circuit board that is not easily detached by means of jetting during the movement.

[0043] In a specific implementation manner, such as Figure 3 、 Figure 5 and Figure 6 As shown, in order to be able to control the height of the air extraction sleeve frame 4 on the cutting shaft 200 to adapt to different milling cutter lengths, an electric push rod 9 is also fixedly installed on the cutting shaft 200, and a support member 91 is fixedly installed on the air extraction sleeve frame 4. The support member 91 is in a U shape and provides stable force-bearing conditions after being fixedly connected to the air extraction sleeve frame 4. The movable rod of the electric push rod 9 is fixedly connected to the support member 91. At this time, the air extraction sleeve frame 4 is slidably installed on the cutting shaft 200. After being driven by the electric push rod 9, the height of the air extraction sleeve frame 4 on the cutting shaft 200 can be controlled. Among them, during the process of splitting and cutting the circuit board, the circuit board is cut along a fixed cutting path. In order to better position the circuit board, positioning protrusions 10 are respectively fixedly arranged around the top of the hollow carrier plate 2. The positioning frame 101 can be placed on the hollow carrier plate 2 through the positioning protrusions 10. Holes that fit the positioning protrusions 10 are opened around the positioning frame 101. When placing the positioning frame 101, the holes are aligned with the positioning protrusions 10. The circuit board to be cut is placed between the positioning frame 101 and the hollow carrier plate 2 and is pressed and fixed by the positioning frame 101. According to the cutting line design of the circuit board, a number of strip-shaped guiding through openings 102 are arranged on the positioning frame 101, and the cutting shaft 200 drives the milling cutter to be placed in the guiding through openings 102 to cut the circuit board.

[0044] In a specific implementation manner, such as Figure 2 and Figure 7As shown, in order to facilitate the separation of the sucked dust particles and reduce the workload of the exhaust equipment, a solid particle separation device is further provided between the exhaust equipment and the exhaust square tube 41, and the device mainly comprises: an air inlet connecting pipe 11 connected to the exhaust square tube 41, the other end of the air inlet connecting pipe 11 is connected to the conical outer sleeve 12, the air inlet connecting pipe 11 is obliquely cut along the circular side wall of the conical outer sleeve 12 to connect to the inside, a limiting cone 13 is fixedly installed in the conical outer sleeve 12, and can be detachably installed in the conical outer sleeve 12, an outlet pipe 131 is provided in the middle of the limiting cone 13, and the end of the outlet pipe 131 is connected to the pipeline of the exhaust equipment, a gap is left between the limiting cone 13 and the conical outer sleeve 12, and a solid collection box 14 is screwed on the top of the cone tip of the conical outer sleeve 12; specifically, the air sucked with dust particles enters the conical outer sleeve 12 at an oblique angle. In the conical outer sleeve 12, the air flows along the inner wall of the conical outer sleeve 12 and generates an air vortex. At this time, the solid particles entrained in the air are thrown out by the centrifugal force of the vortex, and are deposited in the cone tip area of ​​the conical outer sleeve 12 and finally enter the solid collection box 14, while the light air is discharged along the outlet pipe 131. In this way, the extracted dust particles can be pre-processed and collected in advance during the operation of the exhaust equipment, thereby avoiding blockage of the exhaust equipment, reducing the number of equipment maintenance times, and increasing the service life of the equipment; wherein, in order to prevent the dust particles entering the solid collection box 14 from floating up again, a plurality of separate plates 151 are evenly fixed on the bottom plate 15 of the solid collection box 14. After the dust particles enter the solid collection box 14, the instability of the dust in the box body can be effectively prevented, thereby preventing the dust particles from floating out again.

[0045] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A dust treatment device for circuit board cutting, comprising: A base (1) fixedly mounted on the lower part of the cutting device (100); A hollow carrier plate (2) is arranged on the base (1); an air extraction pipe (3) is arranged on the side wall of the hollow carrier plate (2) and extracts air from the inside to the outside from the lower part of the hollow carrier plate (2); it is characterized by further comprising: an air extraction sleeve frame (4) on which an air extraction square pipe (41) extending from the side wall is provided, which is arranged on the cutting shaft (200) of the cutting device (100) and moves with the cutting shaft (200); a mounting ring (5) is mounted on the air extraction sleeve frame (4) a plurality of air jet pipes (6) arranged evenly spaced on the mounting ring (5); a conical air jet nozzle (61) installed at the air outlet end of the air jet pipe (6); the conical air jet nozzle (61) is arranged circumferentially around the cutting axis (200), and the plurality of conical air jet nozzles (61) are arranged in a bent and inclined manner and face the same position; when the air extraction sleeve (4) is extracting air in the area to which it belongs, the air jet pipe (6) disposed in the air extraction sleeve (4) continuously and intermittently ejects airflow; The hollow carrier plate (2) comprises: a plurality of strip-shaped openings (21) uniformly spaced downward from the top thereof; guide plates (22) uniformly spaced in the strip-shaped openings (21); a sealing frame (23) uniformly spaced and installed at the bottom of the strip-shaped openings (21); the exhaust pipe (3) being in communication with the side wall of the sealing frame (23); The guide plate (22) has a lower portion provided with a curved extension portion (221) extending obliquely downward; The sealing frames (23) are symmetrically arranged on the hollow carrier plate (2); the exhaust pipes (3) are arranged on both sides of the hollow carrier plate (2) according to the arrangement of the sealing frames (23); and the curved extension portions (221) arranged at the lower part of the guide plate (22) face the exhaust pipes (3) arranged on both sides.

2. A dust treatment device for circuit board cutting as claimed in claim 1, characterized in that: Also includes: A flow limiting plate (7) is installed at the bottom of the exhaust sleeve frame (4); a receiving hole (71) is provided in the middle of the flow limiting plate (7) for accommodating the lower part of the cutting shaft (200) to pass through, and strip-shaped flow limiting openings (72) are provided around the receiving hole (71).

3. A dust treatment device for circuit board cutting as claimed in claim 2, characterized in that: Also includes: The anti-leakage bristle frame (8) is installed at the lower part of the vacuum sleeve frame (4); the anti-leakage bristle frame (8) is arranged with flexible bristles around the bottom edge.

4. A dust treatment device for circuit board cutting as claimed in claim 3, characterized in that: Also includes: An electric push rod (9) is mounted on the cutting shaft (200); and a support member (91) is mounted on the air extraction sleeve frame (4) and is pushed by the electric push rod (9).

5. A dust treatment device for circuit board cutting as claimed in claim 4, characterized in that: Also includes: A positioning protrusion (10) is arranged around the top of the hollow carrier plate (2); a positioning frame (101) has holes on its periphery that fit with the positioning protrusion (10), and the holes are aligned with the positioning protrusion (10) and placed on the hollow carrier plate (2); and a plurality of strip-shaped guide openings (102) are arranged on the positioning frame (101).

6. A dust treatment device for circuit board cutting as claimed in claim 5, characterized in that: Also includes: An air inlet connecting pipe (11) is connected to the air exhaust square pipe (41); a conical outer sleeve (12) is connected to the end of the air inlet connecting pipe (11) by means of an oblique cut of its circular side wall; a limiting cone (13) is installed in the conical outer sleeve (12); a solid collection box (14) is screwed to the top of the cone tip of the conical outer sleeve (12); an outlet pipe (131) is provided in the middle of the limiting cone (13), and a gap is left between the limiting cone (13) and the conical outer sleeve (12).

7. A dust treatment device for circuit board cutting as claimed in claim 6, characterized in that: It also includes: separation plates (151) which are evenly spaced and arranged on the bottom plate (15) of the solid collection box (14).

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