Dust removal device of material sheet assembly

Abstract

The utility model discloses a dust removal device of a tablet assembly. Comprising a workbench, an air pump, a guide rail obliquely arranged on the workbench, a push block sliding on the guide rail, a feeding plate staggered with the upper end face of the guide rail, a material box arranged on the feeding plate, an air nozzle arranged above the guide rail, a first linear module driving the push block to slide and a second linear module driving the material box to slide. The middle of the feeding plate is provided with a through hole for a material piece assembly to penetrate through, the push block can be inserted into the through hole after sliding upwards, in the using process, when the second linear module drives the material box to move downwards to the position of the through hole, one set of clamping grooves in the material box are opposite to the through hole, and the push block located in the through hole can abut against the material piece assembly in the set of clamping grooves. The pushing block pushes the material sheet assembly to slide down to a set position and then returns, the air nozzle is triggered to spray air for dust removal, and when the pushing block slides up to the through hole, the material sheet assembly after dust removal is just pushed into the group of clamping grooves of the material box, so that the dust removal device is reasonable in structure and high in dust removal efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of dust removal devices, specifically a dust removal device mainly used for removing dust from sheet materials carrying components. Background Technology

[0002] In the field of electrical appliances, sheet metal assemblies, such as circuit boards, include a substrate (PCB) and components mounted on the substrate. Another example is multiple interconnected LED beads. Each LED bead typically includes a bracket (also called a body), an LED chip (or LED patch) located in a groove within the bracket, and at least two pins. Due to the small size of these LED beads, thin ribs are often extended from each bracket during production to facilitate transfer between processes. These ribs connect to the brackets of adjacent LED beads, forming a square sheet metal assembly. This assembly consists of brackets for multiple LED beads connected sequentially. The sheet metal assembly is then temporarily stored in a cassette (the structure of which can be seen in patent documents CN204243073U and CN221954809U), allowing for convenient storage and movement for processing in various stages.

[0003] Because the aforementioned sheet metal components will have some dust and other impurities on their surface after processing or assembly, dust removal treatment is required before proceeding with subsequent processes to ensure the cleanliness of the components. Current dust removal methods include the dust removal structure disclosed in Chinese Patent Publication No. CN217183557U, but this requires first using four pairs of upper and lower fixing plates to clamp the four corners of the circuit board (i.e., the sheet metal component), and then moving the strip rod with suction holes at the top for dust removal. While such a device can remove dust from a single circuit board, it requires manual feeding and clamping and unloading of the upper and lower fixing plates, thus the dust removal efficiency needs further improvement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a dust removal device for sheet components with a more reasonable structure and higher dust removal efficiency, based on the current state of the technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a dust removal device for sheet assembly, including a workbench, an air pump and an air nozzle, characterized in that it further includes:

[0006] A guide rail is inclinedly set on the worktable, and a sliding push block is provided on the guide rail;

[0007] The first linear module can drive the pusher block to slide up and down along the guide rail;

[0008] The feeding plate is inclined toward the upper end face of the guide rail and is arranged on the worktable in an alternating manner with the upper end face of the guide rail. The feeding plate has a through hole in the middle for the feeding sheet assembly to pass through, and the push block can be inserted into the through hole after sliding upward.

[0009] The material box is set on the feeding plate. On the inner surface of the two side walls of the material box, there are multiple slots that correspond to the inclination direction of the guide rail. A set of slots that correspond one to one can be used to hold the two sides of the material assembly.

[0010] The second linear module can drive the material box to slide up and down along the length of the upper plate;

[0011] The air nozzle is arranged above the guide rail and is connected to the air pump via a solenoid valve;

[0012] When the second linear module drives the material box to descend to the through hole position, one of the slots on the material box is opposite to the through hole. The push block located in the through hole can abut against the material piece assembly in the slot. After the push block pushes the material piece assembly down to the set position, it returns and triggers the air nozzle to spray dust removal. When the push block slides up to the through hole, the dust-removed material piece assembly is just pushed into the slot of the material box.

[0013] To ensure that the sheet assembly can slide down automatically and smoothly, the inclination of the guide rail must be such that the sheet assembly passing through the through hole can slide down the guide rail as the pusher moves down.

[0014] In the above schemes, the feeding plate and the guide rail are basically perpendicular to each other, with the perpendicular distribution being the best.

[0015] To ensure smooth airflow, there are multiple guide rails arranged at intervals, and the top cross-section of each guide rail is designed as a cone that gradually increases in size from top to bottom. The lower edge of the cross-section of the push block is designed as a toothed structure that matches each guide rail.

[0016] To reduce friction when the sheet assembly slides, the upper edge of the cross section of the pusher is designed with an upper toothed structure, and the inner wall surface of the through hole corresponding to the upper and lower edges of the pusher is also designed with a toothed structure that meshes with the upper and lower toothed structures.

[0017] To ensure sufficient airflow and improve dust removal efficiency, it is preferable that the air nozzle has multiple air outlets arranged in a straight line along the guide rail, and the airflow direction of the air nozzle is opposite to the return direction of the push block and forms an acute angle with the guide rail.

[0018] To prevent the push block from being accidentally obstructed during its upward sliding, the push block is fixed to the upper end of the slide rod, which is slidably supported on the slide plate connected to the first linear module. The sliding direction of the slide rod is consistent with the movement direction of the push block, and a spring is fitted on the slide rod to ensure that the slide rod always has an upward sliding tendency. In this way, the compression of the spring can be used to avoid damage to the push block and other components.

[0019] In order to stop the dust blowing operation in time when the push block is unexpectedly blocked, the slide plate is also equipped with a position sensor that can sense the downward movement of the slide rod after the spring is compressed. The position sensor is connected to the controller of the dust removal device. When the push block is blocked to a certain extent, the position sensor sends a signal to the controller, and the controller can stop the first linear module from working.

[0020] To ensure that the material box can pass through the through hole correctly, the feeding plate is equipped with guide members located on both sides of the through hole to guide the material box to move up and down.

[0021] A further improvement in the above solutions is that the workbench includes a tabletop and two spaced-apart support plates erected on the tabletop. A movable seat, hinged to the two support plates, is positioned between them. This movable seat can be fixed relative to the workbench by a detachable positioning component. The guide rail, feeding plate, air nozzle, and first and second linear modules are mounted on this movable seat. The movable seat allows for easy adjustment of the angle of the guide rail relative to the workbench, ensuring smooth dust removal operations.

[0022] Furthermore, a transparent cover is provided, which has an isolation chamber. The movable seat, guide rail, push block, first linear module and air nozzle are all located in the isolation chamber, and a dust suction port for connecting to the suction device is opened at the bottom of the isolation chamber.

[0023] To accommodate dust removal of sheet metal assemblies of different specifications, the system also includes limiting rails located on both sides of the guide rail and arranged in the same direction as the guide rail. The upper end of each limiting rail is fitted into an upper positioning post, and the lower end of each limiting rail is fitted into a lower positioning post. The two ends of the upper and lower positioning posts are respectively fixed to the corresponding side plates of the movable seat. A screw rod, parallel to the upper and lower positioning posts, is provided between the upper and lower positioning posts. The two ends of the screw rod are rotatably connected to the corresponding side plates of the movable seat. The screw rod has a first threaded section and a second threaded section with opposite helical directions and the same pitch. The first threaded section corresponds to one of the limiting rails, and the second threaded section corresponds to the other limiting rail. Each limiting rail has a threaded hole that is threadedly connected to the corresponding threaded section. When needed, rotating the screw rod can change the distance between the two limiting rails, thereby accommodating the vertical sliding of sheet metal assemblies of different specifications.

[0024] Compared with the prior art, this utility model cleverly configures an angled feeding plate, a guide rail, a pusher block that can slide on the guide rail, and a material box that can slide up and down on the feeding plate and support the material sheet assembly. Therefore, during dust removal, only the first and second linear modules need to be controlled so that one of the material sheet assemblies in the material box slides down onto the guide rail after passing through the through hole on the feeding plate using its own weight. Then, it slides upward with the help of the pusher block, and dust is removed during the upward sliding process. Finally, it is pushed back into the original slot of the material box. Therefore, the dust removal device of this utility model can automatically perform dust removal without manual clamping, which significantly improves the dust removal efficiency. In particular, the toothed fit between the guide rail and the pusher block, and the toothed fit between the pusher block and the edge of the through hole, allows dust and other impurities on the material sheet assembly to slide smoothly down between the adjacent guide rails after the air nozzle blows air. At the same time, this also helps to reduce the resistance between the material sheet assembly and the edge of the through hole, and between the material sheet assembly and the guide rail, so that the entire dust removal operation can be carried out smoothly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure after removing the transparent cover;

[0027] Figure 3 for Figure 2 A right-side stereoscopic view (the pusher block is located in the through hole);

[0028] Figure 4 for Figure 3 A 3D schematic diagram after the air nozzle has been removed;

[0029] Figure 5 for Figure 2 A left-view stereoscopic diagram;

[0030] Figure 6 for Figure 5 A 3D diagram of the material box after removing one of the boxes;

[0031] Figure 7 for Figure 2 A three-dimensional diagram showing the middle pusher block descending to the set position;

[0032] Figure 8 for Figure 7 A rear-view 3D diagram (with the bottom edge of the through hole removed);

[0033] Figure 9 for Figure 7 AA section view diagram. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] In the following description of the embodiments, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "axial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present 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. Since the embodiments disclosed in this invention can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0036] like Figures 1 to 9 The dust removal device shown is used to remove dust from sheet materials carrying multiple LED beads. It includes a workbench 1, guide rails 2, push blocks 3, a first linear module 4a, a feeding plate 5, a second linear module 4b, a material box 6, an air nozzle 7, and an air pump (not shown in the figure). The workbench 1 includes a table surface 11, on which the dust removal operation is performed. To facilitate the installation of the guide rails 2, push blocks 3, and feeding plate 5, and to allow for easy adjustment of their angles relative to the table surface 11 according to dust removal needs, in this embodiment, two spaced-apart support plates 12 are erected on the table surface 11 of the workbench. A [missing information - likely a device or structure] is provided between the two support plates 12. The movable seat 8 is hinged between the two support plates 12 via a pin 01 and can rotate relative to the worktable 1. When the movable seat 8 rotates to the required angle, it is fixed relative to the worktable 1 by a detachable positioning component. Specifically, the support plate 12 can have an arc-shaped hole centered on the pin or concentrically distributed positioning holes 121 centered on the pin. The positioning component can be a bolt 02. After the bolt passes through the arc-shaped hole or the positioning hole, it passes through the through hole on the movable seat 8 and is connected to the nut. The guide rail 2, the feeding plate 5, the air nozzle 7, and the first linear module 4a and the second linear module 4b are all mounted on the movable seat 8.

[0037] The aforementioned movable seat 8 includes two relatively spaced side plates 81 and a base plate 82 connected between the two side plates. The two side plates 81 are respectively distributed close to the corresponding support plate 12.

[0038] The aforementioned guide rail 2 is located between the two side plates 81 and is inclined relative to the workbench surface 11. The inclination of the guide rail 2 is such that the sheet assembly 100 passing through the through hole 51 can slide down the guide rail 2 along with the push block 3. That is, the sheet assembly 100 should be able to slide down the guide rail 2 automatically under its own weight. Furthermore, considering that friction will be generated when the sheet assembly 100 slides, in order to minimize this friction and ensure smooth airflow from top to bottom during dust removal, in this embodiment, there are multiple guide rails 2 (see [link to documentation]). Figure 7 and Figure 8 The guide rails 2 are arranged at intervals, and the top cross section of each guide rail 2 is designed as a cone that gradually increases from top to bottom. In this way, the contact area between the guide rails and the material sheet assembly 100 can be reduced. In addition, this cone-shaped structure can also guide the airflow after dust removal to carry the dust down.

[0039] The push block 3 is mounted on the guide rail 2 and connected to the first linear module 4a. Under the driving action of the first linear module 4a, it can slide up and down along the guide rail 2. In order to match the structure of the multiple guide rails 2, the lower edge of the cross section of the push block 3 in this embodiment is designed as a lower tooth structure that matches each guide rail 2. The first linear module 4a can adopt a structure of motor and lead screw and nut pair, but in this embodiment, the first linear module 4a preferably includes a first cylinder 41a. The piston rod of the first cylinder 41a is connected to a slide plate 42a. The upper end surface of the slide plate 42a is supported on the guide rod 44a by two spaced sliders 43a. The guide rod 44a is parallel to the piston rod of the first cylinder 41a and is located above the slide plate 42a. The guide rod can be supported on the movable seat 8 by the seat 83 (when the movable seat 8 is adjusted to the position, in order to improve the stability of the guide rod 44a, the lower end of the guide rod 44a can be positioned on the table 11 by the fixing bracket 13). The push block 3 is installed on the slide plate 42a. Thus, with the action of the first cylinder 41a, the slide plate 42a is driven to move, thereby achieving the purpose of pushing the push block 3 to slide on the guide rail 2.

[0040] During use, considering that the pusher 3 may be unexpectedly obstructed during movement, in order to promptly interrupt the operation of the first linear module 4a and avoid damage to components such as the pusher, it is preferable to slidably constrain a slide rod 45a on the aforementioned slide plate 42a. The sliding direction of the slide rod 45a is consistent with the movement direction of the pusher 3. The pusher 3 is fixed to the upper end of the slide rod 45a, and a spring 46a is fitted on the slide rod 45a to ensure that the slide rod 45a always has an upward sliding tendency. To facilitate the installation of the spring 46a and ensure the smooth sliding of the slide rod 45a, a [missing information - likely a component or material] is used. Figure 7 and Figure 9As can be seen, an upright mounting plate 421a is provided on the slide plate 42a (the mounting plate 421a is located at the end of the slide plate 42a in the figure, that is, it is formed by bending the end of the slide plate 42a, or it can be directly set separately and then fixed to the slide plate 42a). The positioning block 47a is fixed to the mounting plate 421a by bolts. In this embodiment, there are two slide rods 45a, which are distributed side by side. The positioning block 47a has stepped holes 471a that correspond to the slide rods 45a. Please refer to [link to relevant documentation]. Figure 9 The mounting plate 421a has two limiting holes corresponding to the stepped hole 471a, allowing the corresponding sliding rod 45a to pass through. Each sliding rod 45a has a protrusion that can be located in the large hole of the stepped hole 471a. One end of each sliding rod 45a is inserted into the stepped hole 471a and exposed, fixing the aforementioned push block 3. There are also two springs 46a, each spring 46a is sleeved on the corresponding sliding rod 47a and located in the large hole of the corresponding stepped hole 471a. One end of the spring 46a abuts against the protrusion of the sliding rod 45a. At this time, the protrusion is adjacent to the stepped surface of the stepped hole 471a, and the stepped surface will restrict the sliding rod 45a from continuing to slide upward. The other end of the spring 46a abuts against the mounting plate 421a. The other end of each sliding rod 45a then passes through the limiting hole on the mounting plate 421a and the sensing plate 48a in sequence, and is connected to a nut. Thus, under the action of the spring, the push block 3 and each sliding rod 45a can always have an upward sliding tendency. At the same time, a position sensor 03 is also installed on the slide plate 42a to sense the sliding rod 45a sliding down after the spring 46a is compressed. That is, when the push block 3 encounters an obstacle and is obstructed during its upward sliding, as the first cylinder 41a continues to operate, the push block 3 will drive each sliding rod 45a to slide down relative to the slide plate 42a. The sensing plate 48a will trigger the position sensor 03, and then the controller of the dust removal device will control the first cylinder 41a to stop working, thereby avoiding damage to the corresponding components in the device.

[0041] The aforementioned feeding plate 5 is inclined towards the upper end face of the guide rail 2 and is staggered with the upper end face of the guide rail 2 on the movable seat 8. In the figure, the feeding plate 5 and the guide rail 2 are basically perpendicular. A through hole 51 for the feeding sheet assembly is provided in the middle of the feeding plate 5. After the push block 3 slides upward, it can be inserted into the through hole 51. Considering that the friction between the through hole 51 and the feeding sheet assembly should be as small as possible, and combined with the specific structure of the push block 3, the upper edge of the cross-section of the push block 3 is also designed as an upper toothed structure. At this time, the inner wall surface of the through hole 51 corresponding to the upper and lower edges of the push block 3 is designed as a toothed structure that meshes with the upper and lower toothed structures. Please refer to [link to relevant documentation]. Figure 6 .

[0042] The aforementioned material box 6 is mounted on the feed plate 5. The material box 6 can adopt the structure of the prior art, but it is required that multiple slots 61 be correspondingly opened on the inner surfaces of its two side walls. The extension direction of each slot 61 needs to be consistent with the tilt direction of the guide rail 2. The slots 61 that correspond one-to-one (i.e., slots 61 at the same height on the inner surfaces of the two sides) are called a set of slots. It needs to be able to hold the two edges of the material sheet assembly 100. One material box 6 can be placed, but it is not limited to one. In the figure, three are placed in order to improve production efficiency. After all the material sheet assemblies 100 in the three material boxes 6 have been cleaned of dust, they are replaced manually.

[0043] The aforementioned second linear module 4b can drive the material box 6 to slide up and down along the length of the feeding plate 5. This second linear module 4b can also be a cylinder, i.e., using the piston rod of a second cylinder to pull the material box. However, for more precise driving distance, a structure of motor, lead screw, and nut pair is preferred. That is, as shown in Figure 2, the second linear module 4b includes a pulling motor 41b, a lead screw 43b, and a pulling nut 44b. The pulling motor 41b is a servo motor or stepper motor, and its output shaft is connected to the lead screw 43b. The lead screw 43b is supported in the feeding seat below the feeding plate 5. The pulling nut 44b is threaded onto the lead screw 43b. The feeding plate 5 has elongated holes 53 distributed parallel to the lead screw 43b. Please refer to [reference needed]. Figure 5 , 6 and Figure 8 The pulling nut 44b is then connected to a receiving seat 42b via a pulling block 45b passing through the elongated hole 53. The receiving seat 42b includes upper and lower baffles 421b spaced apart and multiple connecting rods 422b connecting the two baffles. The three material boxes 6 are located between the two baffles 421b. Thus, as the pulling motor 41b starts, it drives the lead screw 43b to rotate. The pulling block 45b, limited by the elongated hole 53, restricts the rotation of the pulling nut 44b, allowing the pulling nut 44b to move only up and down along the lead screw 43b. Ultimately, the pulling block 45b pulls the receiving seat 42b to slide up and down, thereby driving the three material boxes 6 to move synchronously. To ensure that the material boxes 6 move along the correct path during the up and down sliding process, the upper plate 5 is also equipped with guide members 52 located on both sides of the through hole 51 to guide the up and down sliding of the material boxes 6. Please refer to [link to relevant documentation]. Figure 6 This ensures that when the material component 100 in the material box 6 passes through the through hole 51, it can fall down precisely corresponding to the through hole 51.

[0044] The aforementioned air nozzle 7 is arranged above the aforementioned guide rail 2 and is connected to the aforementioned air pump via a solenoid valve (not shown in the figure); and in order to have a better dust removal effect, the air nozzle 7 in the figure has multiple air outlets, which are arranged in a straight line along the arrangement direction of the guide rail 2. The blowing direction of the air nozzle 7 is opposite to the return direction of the push block 3 and forms an acute angle with the guide rail 2.

[0045] Considering that the sheet assembly 100 has different specifications, that is, the sheet may vary in width and length, in order to adapt to dust removal of sheet assemblies of different specifications, limiting rails 9 arranged in the same direction as the guide rail 2 are also provided on both sides of the guide rail 2. The upper end of each limiting rail 9 is sleeved in the upper positioning post 04, and the lower end of each limiting rail 9 is sleeved on the lower positioning post 05. The two ends of the upper and lower positioning posts are respectively fixed to the side plates 81 of the corresponding side of the movable seat 8, and screws distributed parallel to the upper and lower positioning posts are provided between the upper and lower positioning posts. The screw 06 has two ends rotatably connected to the corresponding side plates 81 of the movable seat 8. The screw 06 has a first threaded section and a second threaded section with opposite helical directions and the same pitch. The first threaded section corresponds to one of the limiting rails 9, and the second threaded section corresponds to the other limiting rail 9. Each limiting rail 9 has a threaded hole that is threadedly connected to the corresponding threaded section. When adjustment is needed, the distance between the two limiting rails 9 can be changed by rotating the screw 06, so that it can be conveniently applied to material assemblies of different specifications.

[0046] To ensure a clear view of the dust removal process and prevent other dust from falling in, a transparent cover 14 is installed on the workbench. This transparent cover 14 has an isolation chamber where the movable seat 8, guide rail 2, push block 3, first linear module, and air nozzle 7 are located. The dust removal operation is completed inside the transparent cover 14. A suction port for the suction device 07 is opened at the bottom of the isolation chamber. The suction device 07 can be a vacuum cleaner or a vacuum pump, so that the dust blown off during the dust removal process is discharged in time through the suction port.

[0047] The dust removal device controller can be a PLC controller or a PC, or other existing control systems can be selected as needed. The required start switches or indicator lights can be installed on the table. According to the work requirements, it can control the operation of the first linear module, the second linear module and the air pump.

[0048] When dust removal is required, first cylinder 41a should be activated beforehand to insert push block 3 into through hole 51. Please refer to [link / reference]. Figure 4 Make the upper surface of push block 3 flush with the surface of feed plate 5. Please refer to [link / reference]. Figure 6 and Figure 7Simultaneously, the pulling motor 41b is controlled to pull the three material boxes 6 to the highest position of the upper plate 5, and the bottommost material piece assembly (referred to as the first material piece assembly) in the bottommost material box 6 aligns with the through hole 51. At this time, due to its own weight, the end face of the first material piece assembly will abut against the push block 3. Then, the first cylinder 41a is activated, causing the push block 3 to push the first material piece assembly down along the guide rail 2. That is, at this time, the first material piece assembly follows the push block 3 down the guide rail 2 after passing through the through hole 51 on the upper plate 5, until the push block 3 slides down to the set position. The first cylinder 41a causes the push block 3 to return, driving the first material piece assembly to slide up. The controller in the dust removal device controls the solenoid valve to open, the air pump to start, and the air nozzle 7 to start blowing air onto the first material piece assembly for dust removal. Please refer to Figure 7 Under the influence of airflow, the blown-off dust slides smoothly down between adjacent guide rails 2 and is eventually sucked away by the suction device 07 through the suction port for further processing. As the pusher block 3 continues to slide upward, the first material piece assembly is finally pushed back into the original slot 61 of the material box 6 after passing through the through hole 51. Then the pull motor 41b starts again, causing the three material boxes 6 to slide down a short distance, which is equal to the distance between adjacent slots. That is, after the pull motor 41b is activated, the material piece assembly above the first material piece assembly (referred to as the second material piece assembly) is aligned with the through hole 51. Similarly, the second material piece assembly abuts against the pusher block 3 in the through hole 51. This process is repeated until all the material pieces in the three material boxes 6 are dusted. Finally, the three material boxes 6 are manually removed and replaced with a new material box 6 containing the material pieces to be dusted for another dust removal operation. Obviously, the dust removal device of this invention can automatically perform dust removal operations without the need for manual clamping of the material sheet assembly.

[0049] During the dust removal process described above, the material box can also be pushed intermittently from bottom to top to achieve the same dust removal operation.

Claims

1. A dust removal device for a sheet assembly comprising a worktable (1), an air pump and an air nozzle (7), characterized in that It also includes: The guide rail (2) is inclinedly set on the worktable, and a sliding push block (3) is provided on the guide rail (2); The first linear module (4a) can drive the push block (3) to slide up and down along the guide rail (2); The feeding plate (5) is inclined toward the upper end face of the guide rail (2) and is arranged on the worktable (1) intersecting with the upper end face of the guide rail (2). The feeding plate (5) has a through hole (51) in the middle for the feeding sheet assembly (100) to pass through. The push block (3) can be inserted into the through hole (51) after sliding up. Material box (6) is set on the upper plate (5). On the inner surface of the two side walls of the material box (6), there are a number of slots (61) that correspond to the inclination direction of the guide rail (2). A set of slots that correspond one to one can be used to hold the two sides of the material sheet assembly (100). The second linear module (4b) can drive the material box (6) to slide up and down along the length of the upper plate (5); The air nozzle (7) is arranged above the guide rail (2) and is connected to the air pump via a solenoid valve; When the second linear module (4b) drives the material box (6) to descend to the position of the through hole (51), one of the slots on the material box (6) is opposite to the through hole (51). The push block (3) located in the through hole (51) can abut against the material piece assembly in the slot. After the push block (3) pushes the material piece assembly (100) down to the set position, it returns and triggers the air nozzle (7) to spray dust. When the push block (3) slides up to the through hole (51), the dust-removed material piece assembly is just pushed into the slot of the material box (6).

2. The dust extraction device of claim 1, wherein: The inclination of the guide rail (2) should be such that the sheet assembly (100) passing through the through hole (51) can slide down the guide rail (2) along with the pusher block (3).

3. The dust extraction device of claim 1, wherein: The feeding plate (5) is basically perpendicular to the guide rail (2).

4. The dust extraction device of claim 1, wherein: There are multiple guide rails (2) arranged at intervals, and the top cross section of each guide rail (2) is designed as a cone that gradually increases from top to bottom. The lower edge of the cross section of the push block (3) is designed as a lower tooth structure that matches each guide rail (2).

5. The dust extraction device of claim 4, wherein: The upper edge of the cross section of the push block (3) is designed as an upper toothed structure, and the inner wall surface of the through hole (51) corresponding to the upper and lower edges of the push block (3) is also designed as a toothed structure that meshes with the upper and lower toothed structures.

6. The dust extraction device of claim 5, wherein: The air nozzle (7) has multiple air outlets, which are arranged in a straight line along the guide rail (2). The air blowing direction of the air nozzle (7) is opposite to the return direction of the push block (3) and forms an acute angle with the guide rail (2).

7. The dust extraction device of claim 1, wherein: The feeding plate (5) is equipped with guide members (52) located on both sides of the through hole (51) to guide the material box (6) to move up and down.

8. The dust extraction device of any of claims 1 to 7, wherein: The workbench (1) includes a tabletop (11) and two support plates (12) that are spaced apart and opposite to each other on the tabletop (11). A movable seat (8) is provided between the two support plates (12) and hinged to the two support plates (12). The movable seat (8) can be fixed relative to the workbench (1) by a detachable positioning member. The guide rail (2), the feeding plate (5), the air nozzle (7), and the first linear module (4a) and the second linear module (4b) are mounted on the movable seat (8).

9. The dust extraction device of claim 8, wherein: It is also equipped with a transparent cover (14) having an isolation chamber in which the movable seat (8), guide rail (2), push block (3), first linear module (4a) and air nozzle (7) are located, and a dust suction port communicating with the suction device (07) is opened at the bottom of the isolation chamber.

10. The dust extraction device of claim 8, wherein: It also includes limiting rails (9) located on both sides of the guide rail (2) and arranged in the same direction as the guide rail (2). The upper end of each limiting rail (9) is sleeved in the upper positioning post (04), and the lower end of each limiting rail (9) is sleeved on the lower positioning post (05). The two ends of the upper and lower positioning posts are respectively fixed on the side plates (81) of the corresponding side of the movable seat (8). A screw (06) is provided between the upper and lower positioning posts and is distributed parallel to the upper and lower positioning posts. The two ends of the screw (06) are respectively rotatably connected to the side plates (81) of the corresponding side of the movable seat (8). The screw (06) has a first thread section and a second thread section with opposite helical directions and the same pitch. The first thread section corresponds to one of the limiting rails (9), and the second thread section corresponds to the other limiting rail (9). Each limiting rail (9) has a screw hole that is threadedly connected to the corresponding thread section.

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