Dust removal head and dust removal mechanism

Abstract

The dust removal head comprises a dust removal body and a baffle, the dust removal body comprises two inclined faces arranged in a bilateral symmetry mode and arc faces connected with the two inclined faces respectively, and each inclined face is provided with a guide groove formed in the mode that at least one part of the inclined face sinks inwards. Two first air channels which are arranged in a bilateral symmetry mode are arranged in the dust removal body, one of the two first air channels is communicated with one guide groove, the other of the two first air channels is communicated with the other guide groove, the guide grooves are covered with the baffles, airflow clamping channels are formed between the baffles and the inclined faces, and after airflow flows out of the airflow clamping channels, the airflow flows out of the airflow clamping channels. And the flow bends downwards along the arc surface. By means of the structural design, the dust removal head does not need to be replaced after shutdown, the efficient dust removal effect can be kept while continuous work of dust removal equipment can be guaranteed, the continuity and production efficiency of a production line are greatly improved, and losses caused by shutdown are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, and more specifically to a dust removal head and a dust removal mechanism. Background Art

[0002] Surface Mount Technology (SMT) is also called surface mounting or surface mounting technology. It is a circuit assembly technology that mounts pinless or short-lead surface mount components (abbreviated as SMC / SMD, called sheet components in Chinese) on the surface of a printed circuit board (PCB) or other substrate, and assembles them by soldering through methods such as reflow soldering or dip soldering. Generally, a circuit board is placed on a carrier, and then solder paste is printed and coated on the surface of the circuit board to form solder paste on the contact surface of the circuit board. After that, the contacts of the semiconductor element or chip are placed against the solder paste on the contact surface of the circuit board, and then reflow soldering is performed to electrically connect the semiconductor element or chip to the circuit board.

[0003] During the previous process and the transportation of PCB boards, it is inevitable that the PCB boards will be contaminated by air dust, droplets, and debris particles. When entering the exposure process and the detection process, various debris will cause the PCB circuit to be unclear and scrapped, resulting in uneven thickness of the solder paste formed on the PCB board, affecting the printing quality of the PCB board, causing the solder paste in some parts to be too thick, causing short circuits, open circuits or wrong lines, and ultimately affecting the function of the PCB board. PCB boards with foreign matter will also damage the scraper of the printing equipment during the printing solder process, and even cause the scraper to deform and scrap, thereby reducing the service life of the machine.

[0004] Therefore, during the production process of PCB boards, it is often necessary to clean the PCB boards first, and the existing cleaning machines generally use brush rollers, rubber rollers and sticky paper rolls for cleaning. The brush rollers, rubber rollers and sticky paper rolls all need to contact the surface of the PCB boards to clean the dust and other debris particles on the surface of the PCB boards. However, during the cleaning process, the brush rollers, rubber rollers and sticky paper rolls will inevitably cause certain wear on the surface of the PCB boards, affecting the production quality of the PCB boards. Secondly, the brush rollers, rubber rollers and sticky paper rolls on the traditional dust removal equipment usually need to be stopped for disassembly and replacement after being used to a certain extent, so as to remove the brush rollers, rubber rollers and sticky paper rolls covered with dust, which not only affects the production efficiency, but may also cause the interruption of the production line due to excessive downtime, seriously affecting the cleaning efficiency of the PCB boards. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a dust removal head to solve the problem that the existing cleaning device needs to be frequently stopped to replace cleaning components, resulting in low cleaning efficiency.

[0006] The technical solution of the utility model is as follows: a dust removal head, including a dust removal body and a baffle, the dust removal body including two inclined surfaces symmetrically arranged on the left and right and arc surfaces respectively connected to the two inclined surfaces, each of the inclined surfaces is provided with a guide groove formed by at least a portion of the inclined surface being recessed inwardly, the dust removal body is provided with two first air ducts symmetrically arranged on the left and right, one of the two first air ducts is connected to one guide groove, and the other of the two first air ducts is connected to the other guide groove, the baffle covers the guide groove, and an airflow channel is formed between the baffle and the inclined surface, and after the airflow flows out of the airflow channel, it bends downward along the arc surface and flows.

[0007] Furthermore, a second air duct is arranged in the dust removal body, the second air duct is located between the two first air ducts which are arranged symmetrically on the left and right, and an open port for dust to enter is arranged at the lower end of the second air duct.

[0008] Furthermore, a through hole is provided in the guide groove, one end of the through hole is connected to the guide groove, and the other end of the through hole is connected to the first air duct, and the groove width of the guide groove tends to narrow along the direction away from the through hole.

[0009] Furthermore, the second air duct includes a transverse air duct and a longitudinal air duct, the transverse air duct is connected to the longitudinal air duct, and on the orthographic projection of the longitudinal air duct, the width of the longitudinal air duct tends to expand along the direction approaching the opening.

[0010] Furthermore, it also includes two limit plates, which are respectively arranged on the left and right sides of the dust removing body, and a limit space is formed between the limit plates and the dust removing body, and at least a part of the baffle is located in the limit space.

[0011] In addition, the utility model also provides a dust removal mechanism, including the above-mentioned dust removal head, a first mounting plate and a transmission assembly arranged on the first mounting plate, the dust removal head is arranged above the transmission assembly for cleaning the PCB board, the transmission assembly includes a first transmission mechanism and a second transmission mechanism, the first transmission mechanism and the second transmission mechanism are configured up and down for clamping and conveying the PCB board.

[0012] Furthermore, the first transmission mechanism and the second transmission mechanism both include a first drive motor, a driving wheel, a plurality of driven wheels, and a conveyor belt wound around the driving wheel and the plurality of driven wheels, and the output end of the first drive motor is connected to the driving wheel to drive the conveyor belt to rotate.

[0013] Furthermore, it also includes a plurality of guide wheels arranged along the traveling direction of the PCB board, and the plurality of guide wheels are used to contact the upper end surface of the PCB board.

[0014] Furthermore, it also includes a second mounting plate, on which are provided two oppositely arranged racks and two oppositely arranged guide rails, a first mounting seat is movably mounted on one of the guide rails, and a second mounting seat is movably mounted on the other guide rail, the first mounting seat and the second mounting seat are both fixedly connected to the first mounting plate, a transmission shaft and a second drive motor fixedly connected to one end of the transmission shaft are mounted on the first mounting seat and the second mounting seat, and the transmission shaft is provided with two gears for meshing with the two racks.

[0015] Furthermore, it also includes a negative pressure suction cylinder, which is installed on the first mounting plate and is used to clean the edge of the PCB board.

[0016] The utility model according to the above scheme has the following beneficial effects:

[0017] (1) Compared with the traditional dust removal equipment, the utility model provides a dust removal head, including a dust removal body and a baffle. The dust removal body includes two inclined surfaces arranged symmetrically on the left and right and arc surfaces connected to the two inclined surfaces respectively. Each inclined surface is provided with a guide groove formed by at least a portion of the inclined surface being recessed inward. The dust removal body is provided with two first air ducts arranged symmetrically on the left and right. One of the two first air ducts is connected to a guide groove, and the other of the two first air ducts is connected to the other guide groove. The baffle covers the guide groove, and an air flow channel is formed between the baffle and the inclined surface. After the air flow flows out of the air flow channel, it bends and flows downward along the arc surface. Through such a structural design, there is no need to stop the machine to replace the dust removal head. While ensuring the continuous operation of the dust removal equipment, it can also maintain an efficient dust removal effect, greatly improving the continuity and production efficiency of the production line and reducing the losses caused by downtime.

[0018] (2) The utility model provides a dust removal head, wherein the dust removal body comprises two inclined surfaces which are symmetrically arranged on the left and right sides and arc surfaces which are respectively connected to the two inclined surfaces, an air flow channel is formed between the baffle and the inclined surfaces, and each inclined surface is provided with a guide groove which is formed by at least a portion of the inclined surface being recessed inwardly, the air flow flows from the first air duct inside the dust removal body to the guide groove, and then after flowing out through the air flow channel, the air flow is subjected to the adsorption force of the arc surface, so that the air flow fits tightly on the arc surface and bends downward to flow, thereby blowing up the dust on the surface of the PCB board, and secondly, the arc surfaces on the left and right sides of the dust removal body are arranged opposite to each other, and the two air flows flow along the two oppositely arranged arc surfaces respectively to form convection, and when the two air flows meet on the surface of the PCB board, a certain disturbance and impact force will be generated, which will help to blow up and carry away the dust attached to the surface of the PCB board.

[0019] (3) The utility model provides a dust removal head, in which the baffle covers the guide groove and forms an air flow channel with the inclined surface, so that the air flow can be compressed and accelerated to a certain extent before flowing out, thereby enhancing the impact force and cleaning effect of the air flow. At the same time, the baffle can also prevent the air flow from diffusing and becoming turbulent when flowing out, ensuring that the air flow can flow along the preset path. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a dust removal head in an embodiment of the utility model;

[0022] Figure 2 It is a front view of the dust removal body in the embodiment of the utility model;

[0023] Figure 3 It is a cross-sectional schematic diagram of a dust removal body in an embodiment of the utility model;

[0024] Figure 4 It is a cross-sectional view of the dust removal body in the embodiment of the utility model;

[0025] Figure 5 It is a cross-sectional schematic diagram of a dust removal head in an embodiment of the utility model;

[0026] Figure 6 This is one of the partial structural schematic diagrams of a dust removal mechanism in an embodiment of the utility model;

[0027] Figure 7 for Figure 6 Schematic diagram of the three-dimensional structure;

[0028] Figure 8 This is a second partial structural diagram of a dust removal mechanism in an embodiment of the utility model;

[0029] Fig. 9 It is a structural schematic diagram of a dust removal mechanism in an embodiment of the utility model.

[0030] In the figure, 1, dust removal body; 11, inclined surface; 12, arc surface; 13, guide groove; 14, first air duct; 15, second air duct; 151, horizontal air duct; 152, longitudinal air duct; 16, through hole; 2, baffle; 3, limit plate; 41, first mounting plate; 42, second mounting plate; 5, transmission assembly; 5a, first transmission mechanism; 5b, second transmission mechanism; 51, first drive motor; 52, driving wheel; 53, driven wheel; 54, conveyor belt; 6, guide wheel; 71, rack; 72, guide rail; 81, first mounting seat; 82, second mounting seat; 91, transmission shaft; 92, second drive motor; 93, negative pressure suction cylinder. DETAILED DESCRIPTION

[0031] The following detailed description and drawings of the embodiments of the present invention are used to illustrate the principle of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the embodiments described.

[0032] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0033] See also Figure 1 As shown, a dust removal head provided by an embodiment of the utility model includes a dust removal body 1 and a baffle 2.

[0034] Specifically, the dust removal body 1 includes two inclined surfaces 11 arranged symmetrically on the left and right and arc surfaces 12 respectively connected to the two inclined surfaces 11, and the two arc surfaces 12 are also arranged symmetrically on the left and right. In this embodiment, each inclined surface 11 is provided with a guide groove 13 formed by at least a portion of the inclined surface 11 being recessed inward. Two first air ducts 14 arranged symmetrically on the left and right are arranged in the dust removal body 1. One of the two first air ducts 14 is connected to a guide groove 13, and the other of the two first air ducts 14 is connected to the other guide groove 13. The baffle 2 covers the guide groove 13, and an air flow channel is formed between the baffle 2 and the inclined surface 11. After the air flow flows out of the air flow channel, it bends and flows downward along the arc surface 12. Through such a structural design, there is no need to stop the machine to replace the dust removal head, which can ensure that the dust removal equipment can work continuously while maintaining an efficient dust removal effect, greatly improving the continuity and production efficiency of the production line and reducing the losses caused by downtime.

[0035] Secondly, each inclined surface 11 is connected to a circular arc surface 12, and the airflow can smoothly transition after flowing out of the inclined surface 11, reducing airflow loss and ensuring that the airflow can evenly cover the area to be cleaned of the PCB board. An airflow channel is formed between the baffle 2 and the inclined surface 11, and each inclined surface 11 is provided with a guide groove 13 formed by at least a portion of the inclined surface 11 being recessed inwardly. The airflow flows from the first air duct 14 inside the dust collector 1 to the guide groove 13, and then after flowing out through the airflow channel, the airflow is subjected to the adsorption force of the circular arc surface 12, so that the airflow fits tightly on the circular arc surface 12 and bends downward to flow, thereby blowing up the dust on the surface of the PCB board. Secondly, the circular arc surfaces 12 on the left and right sides of the dust collector 1 are arranged opposite to each other, and the two airflows flow along the two oppositely arranged circular arc surfaces 12 respectively to form convection. When the two airflows meet on the surface of the PCB board, certain disturbances and impact forces will be generated, which will help to blow up and carry away the dust attached to the surface of the PCB board.

[0036] Preferably, a second air duct 15 is provided in the dust removal body 1, and the second air duct 15 is located between the two first air ducts 14 which are symmetrically arranged on the left and right, and an open port for dust to enter is provided at the lower end of the second air duct 15. Since the two air flows meet and generate disturbances here, a lot of blown dust flows with the air flow and gathers in this area. The open port is located at the intersection of the two air flows, so that the blown dust can be smoothly sucked into the second air duct 15. A large amount of dust can be effectively removed through the collection of the second air duct 15, thereby improving the cleaning efficiency of the PCB board.

[0037] Preferably, a through hole 16 is provided in the guide groove 13, one end of the through hole 16 is connected to the guide groove 13, and the other end of the through hole 16 is connected to the first air duct 14, and the groove width of the guide groove 13 tends to narrow in the direction away from the through hole 16. With this design, when the airflow enters the guide groove 13 from the through hole 16, the groove width tends to narrow, which helps to enhance the concentration and stability of the airflow.

[0038] Preferably, the second air duct 15 includes a transverse air duct 151 and a longitudinal air duct 152, and the transverse air duct 151 and the longitudinal air duct 152 are connected. On the positive projection of the longitudinal air duct 152, the width of the longitudinal air duct 152 tends to expand along the direction close to the opening so that the longitudinal air duct 152 is trumpet-shaped, which helps to enhance the dust collection capacity of the longitudinal air duct 152. Since the width of the longitudinal air duct 152 increases as it approaches the opening, that is, when the airflow carrying dust flows into the longitudinal air duct 152 from the opening, the farther the longitudinal air duct 152 is from the opening, the smaller its width tends to narrow, and the speed of the airflow will increase accordingly, thereby quickly sucking the dust into the transverse air duct 151, avoiding the dust from settling due to the excessively slow wind speed, thereby improving the dust collection efficiency.

[0039] Preferably, two limit plates 3 are further included, which are respectively arranged on the left and right sides of the dust removal body 1, and a limited space is formed between the limit plates 3 and the dust removal body 1, and at least a part of the baffle 2 is located in the limited space.

[0040] In addition, the utility model also provides a dust removal mechanism, including the above-mentioned dust removal head, a first mounting plate 41 and a transmission assembly 5 arranged on the first mounting plate 41, the dust removal head is arranged above the transmission assembly 5 for cleaning the PCB board, the transmission assembly 5 includes a first transmission mechanism 5a and a second transmission mechanism 5b, the first transmission mechanism 5a and the second transmission mechanism 5b are arranged up and down for clamping and conveying the PCB board. Such a design not only enhances the stability of the PCB board during the conveying process, effectively reduces the shaking or shaking of the PCB board when moving, but also ensures that when the airflow blown out from the dust removal head acts on the surface of the PCB board, the PCB board can remain stable, and ensures that the airflow blown out from the dust removal head can be evenly distributed on the surface of the PCB board, thereby effectively blowing away the dust attached to the PCB board, and improving the uniformity and consistency of cleaning.

[0041] Preferably, the first transmission mechanism 5a and the second transmission mechanism 5b both include a first drive motor 51, a driving wheel 52, a plurality of driven wheels 53 and a conveyor belt 54 wound around the driving wheel 52 and the plurality of driven wheels 53, and the output end of the first drive motor 51 is connected to the driving wheel 52 to drive the conveyor belt 54 to rotate.

[0042] Preferably, it further comprises a plurality of guide wheels 6 arranged along the traveling direction of the PCB board, and the plurality of guide wheels 6 are used to contact with the upper end surface of the PCB board.

[0043] Preferably, it further comprises a second mounting plate 42, on which two oppositely arranged racks 71 and two oppositely arranged guide rails 72 are arranged, a first mounting seat 81 is movably mounted on one guide rail 72, a second mounting seat 82 is movably mounted on the other guide rail 72, the first mounting seat 81 and the second mounting seat 82 are both fixedly connected to the first mounting plate 41, a transmission shaft 91 and a second drive motor 92 fixedly connected to one end of the transmission shaft 91 are mounted on the first mounting seat 81 and the second mounting seat 82, and the transmission shaft 91 is provided with two gears for meshing with the two racks 71. With this design, the position of the first mounting plate 41 can be adjusted according to the size of the PCB board, so that the dust removal mechanism can adapt to the cleaning requirements of PCB boards of different sizes.

[0044] Preferably, a negative pressure suction cylinder 93 is further included. The negative pressure suction cylinder 93 is installed on the first mounting plate 41 and is used to clean the edge of the PCB board.

[0045] It is worth mentioning that the dust removal mechanism provided by the embodiment of the utility model is not limited to application in the PCB board manufacturing industry, but also includes but is not limited to SMT electronic manufacturing, semiconductor production, solar energy industry, LCD manufacturing, lithium battery and other manufacturing industries.

[0046] The indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when used, or the orientation or position relationship commonly understood by technical personnel in this field, or the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0047] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0048] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A dust removal head, characterized in that: include: A dust removal body (1) and a baffle (2), wherein the dust removal body (1) comprises two inclined surfaces (11) arranged in a bilaterally symmetrical manner and arc surfaces (12) respectively connected to the two inclined surfaces (11), each of the inclined surfaces (11) is provided with a guide groove (13) formed by at least a portion of the inclined surface (11) being recessed inwardly, and the dust removal body (1) is provided with two first air ducts (14) arranged in a bilaterally symmetrical manner and a second air duct (15) located between the two first air ducts (14), one of the two first air ducts (14) is connected to one of the guide grooves (13), and the other of the two first air ducts (14) is connected to the other guide groove (13). The guide grooves (13) are connected, and an open opening for dust to enter is arranged at the lower end of the second air duct (15). The baffle plate (2) covers the guide groove (13), and an airflow channel is formed between the baffle plate (2) and the inclined surface (11). After the airflow flows out of the airflow channel, it bends and flows downward along the arc surface (12). A through hole (16) is arranged in the guide groove (13), one end of the through hole (16) is connected to the guide groove (13), and the other end of the through hole (16) is connected to the first air duct (14), and the groove width of the guide groove (13) tends to narrow in the direction away from the through hole (16).

2. A dust removal head according to claim 1, characterized in that: The second air duct (15) comprises a transverse air duct (151) and a longitudinal air duct (152); the transverse air duct (151) and the longitudinal air duct (152) are connected; and on the orthographic projection of the longitudinal air duct (152), the width of the longitudinal air duct (152) tends to expand along a direction approaching the opening.

3. A dust removal head as claimed in claim 2, characterized in that: It also comprises two limit plates (3), which are respectively arranged on the left and right sides of the dust removal body (1), and a limit space is formed between the limit plates (3) and the dust removal body (1), and at least a part of the baffle (2) is located in the limit space.

4. A dust removal mechanism, characterized in that: The invention comprises a dust removal head as claimed in any one of claims 1 to 3, a first mounting plate (41) and a transmission assembly (5) arranged on the first mounting plate (41), wherein the dust removal head is arranged above the transmission assembly (5) for cleaning a PCB board, and the transmission assembly (5) comprises a first transmission mechanism (5a) and a second transmission mechanism (5b), wherein the first transmission mechanism (5a) and the second transmission mechanism (5b) are arranged in an upper and lower manner for clamping and conveying the PCB board.

5. A dust removal mechanism according to claim 4, characterized in that: The first transmission mechanism (5a) and the second transmission mechanism (5b) both comprise a first driving motor (51), a driving wheel (52), a plurality of driven wheels (53), and a conveyor belt (54) wound around the driving wheel (52) and the plurality of driven wheels (53); the output end of the first driving motor (51) is connected to the driving wheel (52) so as to drive the conveyor belt (54) to rotate.

6. A dust removal mechanism according to claim 4, characterized in that: It also comprises a plurality of guide wheels (6) arranged along the traveling direction of the PCB board, wherein the plurality of guide wheels (6) are used to contact the upper end surface of the PCB board.

7. A dust removal mechanism according to claim 4, characterized in that: The invention also comprises a second mounting plate (42), on which two oppositely arranged racks (71) and two oppositely arranged guide rails (72) are provided, a first mounting seat (81) is movably mounted on one of the guide rails (72), and a second mounting seat (82) is movably mounted on the other of the guide rails (72), the first mounting seat (81) and the second mounting seat (82) are both fixedly connected to the first mounting plate (41), a transmission shaft (91) and a second drive motor (92) fixedly connected to one end of the transmission shaft (91) are mounted on the first mounting seat (81) and the second mounting seat (82), and the transmission shaft (91) is provided with two gears for meshing with the two racks (71).

8. A dust removal mechanism according to claim 4, characterized in that: It also comprises a negative pressure suction cylinder (93), wherein the negative pressure suction cylinder (93) is mounted on the first mounting plate (41), and the negative pressure suction cylinder (93) is used to clean the edge of the PCB board.

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