Cleaning device and cleaning method

Abstract

The invention provides a cleaning device and a cleaning method, and relates to the technical field of electronic component production and manufacturing. And passing. The cleaning device comprises a cleaning mechanism, an anti-static assembly and a conveying mechanism. The cleaning mechanism is used for cleaning a to-be-treated workpiece. The anti-static assembly is at least partially arranged on the cleaning mechanism and used for removing static electricity on the to-be-treated workpiece. The conveying mechanism is configured to bear the to-be-treated workpiece and convey the to-be-treated workpiece to the cleaning mechanism, and the conveying mechanism can drive the finished workpiece cleaned by the cleaning mechanism to move in the direction away from the cleaning mechanism. By adopting the online dry ice cleaning mode, the cleaning and static electricity removing effects can be realized without transferring the workpiece to be treated for many times, the operation steps are simplified, the time for repeatedly disassembling and assembling the workpiece to be treated is saved, and the cleaning production efficiency is improved.

Description

Technical Field

[0001] This invention generally relates to the field of electronic component manufacturing technology, and more specifically, to a cleaning device and a cleaning method. Background Technology

[0002] Printed circuit boards, also known as PCBA boards, serve as the support structure for electronic components, making them one of the most important parts of electronic systems. After electronic components are soldered or connected to external wires, various residues such as flux and solder balls are usually left on the surface of the printed circuit board. These residues can easily cause short circuits and burn out the circuits on the printed circuit board, thus affecting its performance.

[0003] To address this issue, the following cleaning methods are currently used to remove residues:

[0004] 1. Using a brush cleaning method results in low cleanliness and can easily cause mechanical damage to the printed circuit board;

[0005] 2. Manual cleaning is subject to significant subjective human factors, resulting in inconsistent cleaning quality and low cleaning efficiency.

[0006] 3. When dry ice is used for cleaning, static electricity is generated between the dry ice particles and the printed circuit board due to high-speed friction. If the static voltage is high, it can damage the chip, affecting the product qualification rate and increasing production costs.

[0007] In addition, before adopting the above cleaning methods, the printed circuit boards need to be transferred separately and placed in the cleaning device, which causes the printed circuit boards to be transported and cleaned intermittently, affecting production efficiency. Summary of the Invention

[0008] The cleaning device and cleaning method provided by the present invention can take into account the functions of cleaning, anti-static and high efficiency.

[0009] According to a first aspect of the present invention, a cleaning apparatus is provided, comprising:

[0010] A cleaning system used to clean workpieces to be processed;

[0011] An anti-static component, at least partially disposed in the cleaning mechanism, is used to remove static electricity from the workpiece to be treated;

[0012] A conveying mechanism is configured to carry the workpiece to be processed and convey it to the cleaning mechanism, and the conveying mechanism is capable of driving the finished workpiece after it has been cleaned by the cleaning mechanism to move away from the cleaning mechanism.

[0013] In some implementations, it also includes:

[0014] A fixing mechanism, corresponding to the conveying mechanism, is used to fix the workpiece to be processed;

[0015] The antistatic component is at least partially disposed in the fixing mechanism.

[0016] In some embodiments, the fixing mechanism includes a pressure drive source, a connecting plate and a first fixing member. The output end of the pressure drive source is detachably connected to the first fixing member through the connecting plate. The pressure drive source can drive the first fixing member to move towards the cleaning mechanism through the connecting plate, so that the first fixing member passes through the first fixing hole of the workpiece to be processed.

[0017] The antistatic component includes a first conductive element, which is disposed on the side of the connecting plate facing the cleaning mechanism, and the first conductive element can pass through the second fixing hole of the workpiece to be treated.

[0018] In some embodiments, the first conductive element is detachably connected to the connecting plate.

[0019] In some embodiments, the first conductive element includes a housing and a movable element, the movable element passing through the housing and being slidable relative to the housing, and the movable element passing through the second fixing hole of the workpiece to be processed;

[0020] The antistatic component also includes a first conductor, one end of which is electrically connected to the movable part, and the other end is grounded.

[0021] In some embodiments, the movable component is provided with a grounding hole, through which the first wire passes and is electrically connected to the movable component via a connector.

[0022] In some embodiments, the first conductive element further includes:

[0023] An elastic element is sleeved on the outside of the movable element and disposed between the movable element and the outer shell.

[0024] In some embodiments, the housing includes:

[0025] A sliding portion, wherein the movable member passes through the sliding portion and slides in cooperation with the sliding portion;

[0026] A connecting part is provided on the side of the sliding part away from the moving member, and the connecting part is magnetically connected to the connecting plate.

[0027] In some embodiments, the first fastener includes:

[0028] The fixing part is detachably connected to the connecting plate;

[0029] An insulating elastic part is disposed at the end of the fixing part away from the connecting plate, and the insulating elastic part passes through the first fixing hole of the workpiece to be processed.

[0030] In some embodiments, the fixing mechanism includes a fixing seat and a second fixing member. The fixing seat is disposed on the conveying mechanism, and the second fixing member is disposed on the side of the fixing seat facing the workpiece to be processed. The second fixing member passes through a first fixing hole in the workpiece to be processed.

[0031] The antistatic component includes a second conductive element, which is disposed on the side of the fixing base facing the workpiece to be processed, and the second conductive element can pass through the second fixing hole of the workpiece to be processed.

[0032] In some embodiments, the cleaning mechanism includes a nozzle for spraying dry ice onto the workpiece to be treated, the nozzle being made of metal.

[0033] The antistatic component also includes a second wire, one end of which is electrically connected to the nozzle and the other end is grounded.

[0034] In some embodiments, the cleaning device further includes a delivery pipe, one end of which is provided with an inlet and the other end is connected to the nozzle. The delivery pipe is made of metal or the inner wall of the delivery pipe is provided with a metal layer.

[0035] The antistatic component also includes a third conductor, one end of which is electrically connected to the delivery pipe and the other end is grounded.

[0036] In some embodiments, the end of the nozzle away from the delivery pipe is a conical structure, with the larger end of the conical structure facing the delivery pipe and the smaller end of the conical structure facing the workpiece to be processed.

[0037] In some embodiments, the cleaning mechanism further includes a moving component, the output end of which is connected to the nozzle, and the moving component is capable of driving the nozzle to move along the X, Y and Z directions;

[0038] Among them, the X-axis, the Y-axis, and the Z-axis are all perpendicular to each other.

[0039] In some embodiments, the antistatic component further includes an electrostatic eliminator, which is disposed corresponding to the cleaning mechanism and is used to eliminate static electricity generated on the workpiece after it has been cleaned by the cleaning mechanism.

[0040] In some embodiments, the workpiece to be processed is provided with a central area and an edge area corresponding to the cleaning mechanism, the edge area is disposed around the central area, and the electrostatic voltage of the central area is greater than the electrostatic voltage of the edge area;

[0041] The number of static eliminators is multiple, and the multiple static eliminators are arranged corresponding to the central area and around the central area.

[0042] In some embodiments, the static elimination time of the static eliminator is 0 to 0.5 seconds.

[0043] According to a second aspect of the present invention, embodiments of the present invention also provide a cleaning method, comprising cleaning a workpiece to be processed using the above-described cleaning apparatus, the cleaning method comprising the following steps:

[0044] The workpiece to be processed is placed in the conveying mechanism, which can carry and move the workpiece towards the cleaning mechanism.

[0045] The cleaning unit cleans the workpiece to be processed, and the anti-static component removes static electricity from the workpiece to be processed, forming the finished workpiece.

[0046] The conveying mechanism can drive the finished workpiece to move away from the cleaning mechanism.

[0047] In some embodiments, the following steps are included before the cleaning mechanism cleans the workpiece to be treated:

[0048] The conveying mechanism moves the workpiece to be processed to the fixed mechanism;

[0049] The downward pressure drive source of the fixing mechanism drives the first fixing member and the first conductive member to move closer to the cleaning mechanism through the connecting plate, so that the first fixing member passes through the first fixing hole of the workpiece to be processed, the first conductive member passes through the second fixing hole of the workpiece to be processed, and the first conductive member is grounded through the first wire.

[0050] In some embodiments, before the cleaning mechanism cleans the workpiece, the moving component of the cleaning mechanism drives the nozzle to move along the X, Y and Z directions to adjust the position of the nozzle relative to the workpiece.

[0051] In some embodiments, after the nozzle position is adjusted, the delivery pipe of the cleaning mechanism delivers dry ice to the nozzle, causing the nozzle to spray dry ice onto the workpiece to be treated, and the nozzle is grounded through a second wire, while the delivery pipe is grounded through a third wire.

[0052] In some embodiments, when dry ice is sprayed onto the workpiece by a nozzle, an electrostatic eliminator is used to eliminate static electricity generated on the workpiece.

[0053] One embodiment of the present invention has the following advantages or beneficial effects:

[0054] The cleaning apparatus provided in this invention allows the workpiece to undergo the cleaning process, electrostatic treatment process, and finished workpiece output process continuously and without interruption under the conveying action of the conveying mechanism. Using this online dry ice cleaning method, the workpiece can achieve cleaning and electrostatic removal effects without multiple transfers, simplifying operation steps, saving time spent repeatedly disassembling and reassembling the workpiece, and improving cleaning production efficiency.

[0055] The cleaning method provided in this embodiment of the invention involves conveying the workpiece to be processed to the cleaning mechanism via a conveying mechanism. The cleaning mechanism then cleans the surface of the workpiece and removes static electricity from it using an antistatic component, achieving multi-site ion neutralization. Finally, the conveying mechanism can transport the finished workpiece after cleaning, thus satisfying the requirements of online continuous cleaning. This method improves the cleanliness of dry ice cleaning while reducing static voltage during the cleaning process, thereby avoiding the risk of damage to the workpiece. Attached Figure Description

[0056] To better understand the present invention, reference may be made to the embodiments shown in the following drawings. Components in the drawings are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of the invention. Furthermore, related elements or components may have different arrangements as known in the art. Additionally, in the drawings, the same reference numerals denote the same or similar components in various figures. The above and other features and advantages of the present invention will become more apparent from a detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0057] in:

[0058] Figure 1 The diagram shown is a structural schematic of the workpiece to be cleaned by the cleaning device according to an embodiment of the present invention.

[0059] Figure 2 The diagram shown is a structural schematic of a cleaning device according to an embodiment of the present invention;

[0060] Figure 3 The diagram shown is a structural schematic of the conveying mechanism and the fixing mechanism in a cleaning device according to an embodiment of the present invention;

[0061] Figure 4 The diagram shown is a structural schematic of the first fixing member and the first conductive member in a cleaning device according to an embodiment of the present invention;

[0062] Figure 5The diagram shown is a structural schematic of the first fixing member in a cleaning device according to an embodiment of the present invention;

[0063] Figure 6 The diagram shown is a structural schematic of the first conductive element in a cleaning device according to an embodiment of the present invention;

[0064] Figure 7 The diagram shown is a cross-sectional view of the first conductive element in a cleaning apparatus according to an embodiment of the present invention.

[0065] Figure 8 The diagram shown is a structural schematic of the cleaning mechanism in a cleaning device according to an embodiment of the present invention;

[0066] Figure 9 The diagram shown is a structural schematic of the nozzle in a cleaning device according to an embodiment of the present invention;

[0067] Figure 10 The diagram shown is a structural schematic of an electrostatic eliminator in a cleaning apparatus according to an embodiment of the present invention;

[0068] Figure 11 The diagram shown is a schematic representation of the distribution of static charge generated on the workpiece after spraying from the nozzle in a cleaning apparatus according to an embodiment of the present invention.

[0069] Figure 12 The diagram shown is a parameter schematic of the static eliminator in a cleaning device according to an embodiment of the present invention;

[0070] The reference numerals in the attached figures are explained as follows:

[0071] 100. Workpiece to be processed; 101. First fixing hole; 102. Second fixing hole; 103. Central area; 104. Edge area;

[0072] 1. Cleaning mechanism; 2. Anti-static components; 3. Conveying mechanism; 4. Fixing mechanism; 5. Base;

[0073] 11. Nozzle; 12. Delivery pipe; 13. Moving component; 131. X-axis drive component; 132. Y-axis drive component; 133. Z-axis drive component;

[0074] 21. First conductive element; 211. Housing; 2111. Sliding part; 2112. Connecting part; 212. Moving part; 2121. Grounding hole; 213. Elastic element;

[0075] 22. First wire; 23. Second wire; 24. Third wire; 25. Static eliminator;

[0076] 31. Driving wheel; 32. Driven wheel; 33. Conveyor belt; 34. Tensioner wheel;

[0077] 41. Downward driving source; 42. Connecting plate; 43. First fixing member; 431. Fixing part; 432. Insulating elastic part. Detailed Implementation

[0078] The technical solutions of the exemplary embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The exemplary embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of the present invention.

[0079] In the description of this invention, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more; and the term "and / or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the / described" object or "an" object are also intended to indicate one of a possible plurality of such objects.

[0080] Unless otherwise specified or stated, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0081] Furthermore, in the description of this invention, it should be understood that the directional terms such as "upper," "lower," "inner," and "outer" described in the exemplary embodiments of this invention are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the exemplary embodiments of this invention. It should also be understood that, in the context of an element or feature being connected to another element (one or more) "upper," "lower," "inner," or "outer," it can be directly connected to the other element (one or more) "upper," "lower," "inner," or "outer," or indirectly connected to the other element (one or more) "upper," "lower," "inner," or "outer" through an intermediate element.

[0082] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0083] This embodiment provides a cleaning device, applicable to the field of electronic component manufacturing technology. For example... Figures 1-2 As shown, the cleaning device includes a base 5 and a cleaning mechanism 1. The cleaning mechanism 1 is disposed on the base 5 and is used to clean the workpiece 100 to be processed. The workpiece 100 to be processed can specifically be an electronic component, such as a printed circuit board. The workpiece 100 to be processed is provided with a first fixing hole 101 and a second fixing hole 102, which are used to position the workpiece 100 to be processed during the cleaning process.

[0084] The cleaning unit 1 can be a brush cleaning unit, a dry ice cleaning unit, etc. For example, the dry ice cleaning unit sprays dry ice particles to impact the workpiece 100 to wash away impurities or dust on the workpiece 100, thereby improving the cleanliness of the workpiece 100. However, static electricity may be generated between the dry ice particles and the printed circuit board due to high-speed friction. If the static voltage is relatively high, the static electricity may break down the printed circuit board and cause damage.

[0085] Therefore, such as Figure 2 As shown, the cleaning device also includes an anti-static component 2, which is at least partially disposed in the cleaning mechanism 1 and is used to remove static electricity from the workpiece 100 to be treated. With this arrangement, the maximum static voltage during the cleaning process can be less than 100V, avoiding electrostatic damage to the workpiece 100 to be treated.

[0086] Since the cleaning mechanism 1 and the antistatic component 2 are separate independent structures, if the workpiece 100 to be processed needs to be removed from the cleaning mechanism 1 and then placed into the separate antistatic component 2 after being cleaned by the cleaning mechanism 1, the cleaning process and the electrostatic treatment process are intermittent and discontinuous. Using this offline dry ice cleaning method, the workpiece 100 to be processed needs to be transferred multiple times, the operation steps are complicated, and it seriously affects the production efficiency.

[0087] Therefore, such as Figure 2 As shown, the cleaning device provided in this embodiment also includes a conveying mechanism 3. The conveying mechanism 3 is configured to carry the workpiece 100 to be processed and convey the workpiece 100 to be processed to the cleaning mechanism 1. The conveying mechanism 3 can drive the finished workpiece after being cleaned by the cleaning mechanism 1 to move away from the cleaning mechanism 1.

[0088] For example, the conveying mechanism 3 first conveys the workpiece 100 to be processed to the cleaning mechanism 1. The cleaning mechanism 1 is used to clean the workpiece 100, and the anti-static component 2 is used to remove the static electricity accumulated on the workpiece 100 during the cleaning process, so that the workpiece 100 is formed into a finished product. Under the conveying action of the conveying mechanism 3, the workpiece 100 can continuously and uninterruptedly go through the cleaning process, the static electricity treatment process, and the finished product output process.

[0089] By using this online dry ice cleaning method, the workpiece 100 can achieve cleaning and static electricity removal without multiple transfers, simplifying the operation steps, saving time spent on repeated disassembly and reassembly of the workpiece 100, and improving cleaning production efficiency.

[0090] Specifically, such as Figures 2-3 As shown, the conveying mechanism 3 includes a conveying drive source (not shown), a driving wheel 31, a driven wheel 32, a conveyor belt 33, and a tensioning wheel 34. The conveying drive source is mounted on the base 5 and can be a drive motor. The output end of the conveying drive source is connected to the driving wheel 31. The driving wheel 31 and the driven wheel 32 are rotatably connected to both ends of the base 5 along its length. The conveyor belt 33 is wound around the driving wheel 31 and the driven wheel 32, and carries the workpiece 100 to be processed. The conveying drive source drives the driving wheel 31 to rotate, thereby moving the conveyor belt 33 and rotating the driven wheel 32 to realize the conveying process of the workpiece 100. The conveyor belt 33 is also wound around the tensioning wheel 34, which adjusts the tension of the conveyor belt 33 to maintain tension and improve the conveying efficiency of the workpiece 100.

[0091] like Figures 2-3 As shown, the cleaning mechanism 1 also includes a fixing mechanism 4, which is correspondingly arranged with the conveying mechanism 3 and is used to fix the workpiece 100 to be processed. The fixing mechanism 4 can prevent the workpiece 100 to be processed from shifting position during the conveying and cleaning process, so as to ensure the cleaning effect of the workpiece 100 to be processed.

[0092] The antistatic component 2 is at least partially disposed in the fixing mechanism 4. When the fixing mechanism 4 fixes and contacts the workpiece 100 to be processed, the antistatic component 2 enables the fixing mechanism 4 to have an antistatic function, reducing the possibility of static electricity being introduced into the workpiece 100 during the fixing process and causing electric damage.

[0093] Specifically, the fixing mechanism 4 includes a downward driving source 41, a connecting plate 42, and a first fixing member 43. The downward driving source 41 can be a cylinder, hydraulic cylinder, electric cylinder, linear motor, or lifting screw, etc. The output end of the downward driving source 41 is detachably connected to the first fixing member 43 through the connecting plate 42. The downward driving source 41 can drive the first fixing member 43 to move towards the cleaning mechanism 1 through the connecting plate 42, so that the first fixing member 43 passes through the first fixing hole 101 of the workpiece 100 to be processed.

[0094] As the downward driving source 41 presses down, the first fixing member 43 passes through the first fixing hole 101 of the workpiece 100 to be processed, so that the workpiece 100 to be processed presses against the conveyor belt 33 of the conveying mechanism 3. While realizing the positioning of the workpiece 100 to be processed, it also realizes the fixation between the workpiece 100 to be processed and the conveyor belt 33, preventing the workpiece 100 to be processed from moving relative to the conveyor belt 33, and ensuring the positional stability of the workpiece 100 to be processed during the conveying and cleaning processes.

[0095] Specifically, such as Figures 4-5 As shown, the first fixing member 43 includes a fixing part 431, which is detachably connected to the connecting plate 42. Exemplarily, the fixing part 431 and the connecting plate 42 are connected by means including but not limited to bolts, magnetic attraction, or snap-fit ​​connections. Exemplarily, the top of the fixing part 431 is fixed to the connecting plate 42 by bolts, and the bottom of the fixing part 431 can be pressed down and contact the surface of the workpiece 100 to be processed, for fixing the workpiece 100 to be processed, to prevent displacement of the workpiece 100 during cleaning by the cleaning mechanism 1.

[0096] The first fixing member 43 also includes an insulating elastic portion 432, which is disposed at the end of the fixing member 431 away from the connecting plate 42 and passes through the first fixing hole 101 of the workpiece 100 to be processed. The insulating elastic portion 432 is made of an elastic material, such as rubber, which can prevent the first fixing member 43 from damaging the workpiece 100 to be processed or causing friction debris during the pressing process. It can also prevent the insulating elastic portion 432 from guiding static charge to the workpiece 100 to be processed, thus separating the static charge from the workpiece 100 to be processed and reducing the risk of static electricity concentration on the workpiece 100 to be processed. At the same time, the insulating elastic portion 432 can increase the friction between itself and the workpiece 100 to be processed, further improving the fixing effect of the workpiece 100 to be processed.

[0097] like Figures 3-4 As shown, the antistatic component 2 includes a first conductive element 21, which is disposed on the side of the connecting plate 42 facing the cleaning mechanism 1. The first conductive element 21 can pass through the second fixing hole 102 of the workpiece 100 to be processed.

[0098] Understandably, the connecting plate 42 can simultaneously provide mounting and fixing positions for the first fixing member 43 and the first conductive member 21. As the downward driving source 41 presses down, the connecting plate 42 can simultaneously drive the first fixing member 43 and the first conductive member 22 to move towards the workpiece 100 to be processed. The first fixing member 43 and the first conductive member 21 are respectively inserted into the first fixing hole 101 and the second fixing hole 102 of the workpiece 100 to be processed. In this way, the first fixing member 43 can fix the workpiece 100 to be processed and maintain reliable contact between the two. At the same time, the first conductive member 21 can also lead out and eliminate static charge on the workpiece 100 to be processed.

[0099] The first conductive element 21 is detachably connected to the connecting plate 42. Exemplarily, the first conductive element 21 and the connecting plate 42 are connected by means including but not limited to bolts, magnetic attraction, or snap-fit ​​connections. Exemplarily, the connecting plate 42 is made of magnetic steel plate, or the end face of the first conductive element 21 facing the connecting plate 42 is made of magnetic material, allowing for free adjustment of the position of the first conductive element 21 relative to the connecting plate 42, providing good flexibility.

[0100] Specifically, such as Figures 6-7 As shown, the first conductive element 21 includes a housing 211. For example, the connecting plate 42 is made of magnetic steel plate or the top surface of the housing 211 is made of magnetic material, so that the position of the first conductive element 21 relative to the connecting plate 42 can be freely adjusted.

[0101] Specifically, the first conductive element 21 also includes a movable element 212, which passes through the housing 211 and is slidable relative to the housing 211. The movable element 212 passes through the second fixing hole 102 of the workpiece 100 to be processed.

[0102] Since the movable component 212 is not fixed relative to the outer casing 211 but is movable, its position can be adjusted according to the position of the workpiece 100 by extending and retracting relative to the outer casing 211. When the movable component 212 contacts the second fixing hole 102 of the workpiece 100, the effective contact between the movable component 212 and the surface of the workpiece 100 can be maintained, and hard damage to the surface of the workpiece 100 can be reduced.

[0103] For example, the housing 211 specifically includes a sliding part 2111 and a connecting part 2112. The moving part 212 passes through the sliding part 2111 and slides in cooperation with the sliding part 2111. The connecting part 2112 is disposed on the side of the sliding part 2111 away from the moving part 212, and the connecting part 2112 is magnetically connected to the connecting plate 42.

[0104] In one embodiment, the first conductive element 21 further includes an elastic element 213, wherein the elastic element 213 may be a cylindrical spring. The elastic element 213 is sleeved on the outside of the movable element 212 and disposed between the movable element 212 and the outer shell 211. The elastic element 213 serves to buffer and reset the movable element 212, preventing deformation of the workpiece 100 under large pressure. Simultaneously, it enables the extension and retraction of the movable element 212 to ensure reliable contact between the movable element 212 and the workpiece 100.

[0105] In one embodiment, such as Figures 6-7 As shown, the antistatic component 2 also includes a first conductor 22, one end of which is electrically connected to the movable component 212, and the other end is grounded. Since the movable component 212 is in reliable contact with the workpiece 100 to be processed, the movable component 212 can also be referred to as a metal ejector pin. The movable component 212 is grounded through the first conductor 22, so that the workpiece 100 to be processed remains effectively grounded during the cleaning process, so as to draw the static electricity on the workpiece 100 to the outside and reduce the risk of damage to the workpiece 100.

[0106] It is understood that the first conductor 22 can be directly grounded or connected to the adapter block set on the base 5, and then the adapter block is grounded through the grounding conductor. This embodiment does not limit the specific grounding form. As long as the moving part 212 can be grounded, it is within the protection scope of this embodiment.

[0107] The movable component 212 is provided with a grounding hole 2121. The first conductor 22 passes through the grounding hole 2121 and is electrically connected to the movable component 212 through a connector. The grounding hole 2121 of the movable component 212 provides an installation position for the first conductor 22. After the first conductor 22 passes through the grounding hole 2121, a circuit is formed between the workpiece 100 to be processed, the movable component 212, the first conductor 22 and the ground, which facilitates the removal of static charge on the workpiece 100 to achieve the purpose of eliminating static charge.

[0108] It is understandable that the first conductor 22 and the grounding hole 2121 can be directly inserted and then contacted, or they can be fixed by bolts or other connecting parts. That is, the bolts are inserted into the grounding hole 2121, so that the end of the first conductor 22 facing the moving part 212 is fixed in the grounding hole 2121 and makes reliable contact with the grounding hole 2121.

[0109] In another embodiment, the fixing mechanism 4 includes a fixing seat (not shown in the figure) and a second fixing member (not shown in the figure). The fixing seat is disposed on the conveying mechanism 3, and the second fixing member is disposed on the side of the fixing seat facing the workpiece 100 to be processed. The second fixing member passes through the first fixing hole 101 of the workpiece 100 to be processed.

[0110] In this way, the workpiece 100 is not fixed by the downward pressure of the downward driving source 41, but by the fixing seat set on the conveyor belt 33. The second fixing member passes through the bottom surface of the workpiece 100 and fixes the workpiece 100 to the fixing seat.

[0111] In another embodiment, the antistatic component 2 includes a second conductive element disposed on the side of the fixing base facing the workpiece 100 to be processed, and the second conductive element can pass through the second fixing hole 102 of the workpiece 100 to be processed.

[0112] In this manner, the mounting base simultaneously provides mounting positions for the second fixing member and the second conductive member, which are respectively inserted into the first fixing hole 101 and the second fixing hole 102 of the workpiece 100 to be processed. This method allows the second fixing member to fix the workpiece 100 to be processed while simultaneously enabling the second conductive member to draw out and eliminate static charge on the workpiece 100.

[0113] In one embodiment, such as Figure 2 and Figure 8 As shown, the cleaning mechanism 1 includes a nozzle 11, which is used to spray dry ice onto the workpiece 100 to clean impurities from the workpiece 100.

[0114] The cleaning mechanism 1 also includes a moving component 13, the output end of which is connected to the nozzle 11. The moving component 13 can drive the nozzle 11 to move along the X, Y, and Z directions; wherein the X, Y, and Z directions are mutually perpendicular. The moving component 13 is used to realize the position adjustment process of the nozzle 11 in the X, Y, and Z directions to ensure the positional accuracy between the nozzle 11 and the workpiece 100 to be processed.

[0115] Specifically, such as Figure 8 As shown, the moving component 13 includes an X-axis driving component 131, a Y-axis driving component 132, and a Z-axis driving component 133. The conveying end of the X-axis driving component 131 is connected to the Y-axis driving component 132, and the X-axis driving component 131 drives the Y-axis driving component 132 to move along the X-axis. The conveying end of the Y-axis driving component 132 is connected to the Z-axis driving component 133, and the Y-axis driving component 132 drives the Z-axis driving component 133 to move along the Y-axis. The conveying end of the Z-axis driving component 133 is connected to the nozzle 11, and the Z-axis driving component 133 drives the nozzle 11 to move along the Z-axis. Under the combined action of the X-axis driving component 131, the Y-axis driving component 132, and the Z-axis driving component 133, the nozzle 11 can move along the X, Y, and Z axes respectively.

[0116] In one embodiment, such as Figure 9As shown, the cleaning device also includes a delivery pipe 12, one end of which has an inlet, and the other end is connected to a nozzle 11. The delivery pipe 12 delivers and supplies dry ice to the nozzle 11. The delivery pipe 12 is made of metal or has a metal layer on its inner wall. The metal layer can be directly disposed on the inner wall of the delivery pipe 12, or the metal layer can be a metal mesh distributed on the inner wall of the delivery pipe 12.

[0117] In one embodiment, such as Figure 9 As shown, the end of the nozzle 11 away from the conveying pipe 12 is a conical structure, with the larger end of the conical structure facing the conveying pipe 12 and the smaller end of the conical structure facing the workpiece 100 to be processed.

[0118] In this way, the nozzle 11 adopts a tapered structure, which effectively reduces the number of dry ice particles, thereby reducing static electricity generation.

[0119] Because the dry ice flows at high speed within the nozzle 11, friction generates a first portion of high-voltage static electricity, causing the charged dry ice to be directly sprayed onto the workpiece 100. When the dry ice hits the circuit board, high-speed friction generates a second portion of static electricity. The superposition of these two portions of static electricity results in a very high voltage that can instantly break down the workpiece 100, causing damage to it and potentially burning out sensitive components, affecting product yield and increasing production costs.

[0120] Therefore, the antistatic component 2 also includes a second wire 23. The nozzle 11 is made of metal. One end of the second wire 23 is electrically connected to the nozzle 11, and the other end is grounded.

[0121] For example, the nozzle 11 is provided with a first grounding through hole, which is the grounding connection point between the second wire 23 and the nozzle 11. Static charge inside the nozzle 11 can be guided to the outside through the second wire 23 to eliminate the static charge inside the nozzle 11 and reduce the risk of static charge breaking down the workpiece 100 to be processed.

[0122] The antistatic component 2 also includes a third conductor 24, one end of which is electrically connected to the delivery pipe 12 and the other end is grounded.

[0123] For example, the conveying pipe 12 is provided with a second grounding through hole. The second grounding through hole of the conveying pipe 12 is the grounding connection point between the third wire 24 and the conveying pipe 12. Since the conveying pipe 12 is made of metal or the inner wall of the conveying pipe 12 has a metal layer, the conveying pipe 12 has a certain conductivity. The static charge in the conveying pipe 12 can be guided to the outside through the third wire 24 to eliminate the static charge in the conveying pipe 12 and reduce the risk of static charge breaking down the workpiece 100 to be processed.

[0124] In one embodiment, such as Figure 10 As shown, the antistatic component 2 also includes an electrostatic eliminator 25, which is correspondingly arranged with the cleaning mechanism 1. The electrostatic eliminator 25 is used to eliminate the static electricity generated on the workpiece 100 after it has been cleaned by the cleaning mechanism 1.

[0125] For example, the static eliminator 25 may include an ion fan. The ion fan utilizes a high-voltage power generator to produce a high voltage, which is applied to a needle-like or filamentous object. When the voltage rises to a set threshold, the tip of the needle-like or filamentous object undergoes corona discharge, ionizing the surrounding air and generating a large number of positive and negative ions. The built-in ion fan blows out these ionized positive and negative ions, forming an airflow carrying positive and negative charges. When this ion wind blows across the surface of the workpiece 100, which carries static electricity, the charge on the surface of the workpiece 100 is attracted and neutralized by the opposite charge in the airflow. For example, if the surface of the workpiece 100 carries a negative charge, the negative charge will attract positive ions in the airflow; if the surface of the workpiece 100 carries a positive charge, the positive charge will attract negative ions in the airflow. In this way, static electricity on the surface of the workpiece 100 is effectively eliminated.

[0126] In one embodiment, such as Figure 11 As shown, the workpiece 100 to be processed is provided with a central area 103 and an edge area 104 in the cleaning mechanism 1. The edge area 104 is located around the central area 103, and the electrostatic voltage of the central area 103 is greater than that of the central area 103. That is, simulation confirms that during the cleaning process, the distribution of static charge on the surface of the workpiece 100 to be processed by dry ice shows a pattern of concentration in the center and dispersion around the edges.

[0127] To address the uneven distribution of static charge, multiple static eliminators 25 are provided, each corresponding to and surrounding the central area 103. This arrangement of the static eliminators 25 and their corresponding positions within the central area 103 allows for concentrated and enhanced static elimination of the concentrated static charge in the central area 103, further improving the static elimination effect on the workpiece 100.

[0128] Specifically, such as Figure 12 As shown, the static elimination time of the static eliminator 25 is 0 to 0.5 s; and / or, the hysteresis voltage of the static eliminator 25 is 0 to 3 kV.

[0129] For example, when the static elimination time is approximately 0.5 s, the hysteresis voltage of the first static eliminator 25 decreases from 3 kV to below 100 V. However, when the static elimination time is approximately 0.5 s, the hysteresis voltage of the second static eliminator 25 decreases from 3 kV to approximately 2.2 kV. Since the neutralization efficiency of the ion fan affects the accumulated static electricity, appropriately increasing the dissipation efficiency while avoiding ion conflicts is beneficial for static electricity control. Therefore, the first static eliminator is preferred for the static eliminator 25.

[0130] This embodiment also provides a cleaning method, which uses the above-described cleaning device to clean the workpiece 100 to be processed. The cleaning method includes the following steps:

[0131] The workpiece 100 to be processed is placed in the conveying mechanism 3, which can carry and drive the workpiece 100 to be processed to move towards the cleaning mechanism 1.

[0132] The cleaning mechanism 1 cleans the workpiece 100 to be processed, and the anti-static component 2 removes the static electricity on the workpiece 100 to be processed, forming the finished workpiece.

[0133] The conveying mechanism 3 can drive the finished workpiece to move away from the cleaning mechanism 1.

[0134] The cleaning method provided in this embodiment involves conveying the workpiece 100 to be processed to the cleaning mechanism 1 via the conveying mechanism 3. The cleaning mechanism 1 can clean the surface of the workpiece 100 and remove static electricity from the workpiece 100 using the antistatic component 2. Finally, the conveying mechanism 3 can drive the conveying of the finished workpiece after cleaning, thus satisfying the online continuous cleaning process. While improving the cleanliness of dry ice cleaning, it can also reduce the static voltage during the cleaning process to avoid the risk of damage to the workpiece 100.

[0135] In one embodiment, the following steps are included before the cleaning mechanism 1 cleans the workpiece 100 to be processed:

[0136] The conveying mechanism 3 moves the workpiece 100 to be processed to the fixing mechanism 4;

[0137] The downward driving source 41 of the fixing mechanism 4 drives the first fixing member 43 and the first conductive member 21 to move closer to the cleaning mechanism 1 through the connecting plate 42, so that the first fixing member 43 passes through the first fixing hole 101 of the workpiece 100 to be processed, the first conductive member 21 passes through the second fixing hole 102 of the workpiece 100 to be processed, and the first conductive member 21 is grounded through the first wire 22.

[0138] As the downward driving source 41 presses down, the connecting plate 42 can simultaneously drive the first fixing member 43 and the first conductive member 22 to move towards the workpiece 100 to be processed. In this way, the first fixing member 43 can fix the workpiece 100 to be processed and maintain reliable contact, and the first conductive member 21 can simultaneously lead out and eliminate static charge on the workpiece 100 to be processed.

[0139] After the cleaning mechanism 1 cleans the workpiece 100, the downward driving source 41 of the fixing mechanism 4 drives the first fixing member 43 and the first conductive member 21 to move away from the cleaning mechanism 1 through the connecting plate 42, so that the first fixing member 43 is disengaged from the first fixing hole 101 of the workpiece 100 and the first conductive member 21 is disengaged from the second fixing hole 102 of the workpiece 100, so that the conveying mechanism 3 can output the finished workpiece.

[0140] In one embodiment, before the cleaning mechanism 1 cleans the workpiece 100 to be processed, the moving component 13 of the cleaning mechanism 1 drives the nozzle 11 to move along the X, Y and Z directions to adjust the position of the nozzle 11 relative to the workpiece 100 to be processed.

[0141] Since the moving component 13 can drive the nozzle 11 to adjust its position in the X, Y and Z directions, it ensures the positional accuracy between the nozzle 11 and the workpiece 100 to be treated, so that the nozzle 11 can be more accurately aligned with the workpiece 100 to be treated, thereby improving the cleanliness of the cleaning.

[0142] When dry ice is sprayed from nozzle 11 onto the workpiece 100, the high-speed flow of dry ice in the delivery pipe 12 generates high-voltage static electricity due to friction. Static electricity is also generated when dry ice is sprayed from the high-pressure nozzle. Therefore, after the position of nozzle 11 is adjusted, the delivery pipe 12 of the cleaning mechanism 1 delivers dry ice to nozzle 11, causing nozzle 11 to spray dry ice onto the workpiece 100. Nozzle 11 is grounded through second wire 23, and delivery pipe 12 is grounded through third wire 24.

[0143] With this configuration, the two locations that may generate static electricity, namely the delivery pipe 12 and the nozzle 11, are grounded through the second wire 23 and the third wire 24, respectively, so as to discharge the static electricity inside and achieve ion neutralization at multiple locations. This avoids the spraying of charged dry ice onto the workpiece 100 to be treated, thereby reducing the risk of damage to the workpiece 100 due to static electricity.

[0144] In one embodiment, when the nozzle 11 sprays dry ice onto the workpiece 100, the static electricity generated on the workpiece 100 is eliminated by the static eliminator 25, which reduces the risk of static electricity generation during the cleaning process and further increases the protection of locations where static electricity may occur, so as to achieve the purpose of static electricity suppression and rapid dissipation in online dry ice cleaning.

[0145] It should be noted that the embodiments of the present invention shown in the drawings and described in this specification are merely one example employing the principles of the invention. Those skilled in the art will clearly understand that the principles of the invention are not limited to any details or components of the apparatus shown in the drawings or described in the specification.

[0146] It should be understood that the application of this invention is not limited to the detailed structure and arrangement of the components presented in this specification. The invention can have other embodiments and can be implemented and performed in various ways. The foregoing variations and modifications fall within the scope of this invention. It should be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of the invention. The embodiments described in this specification illustrate the best known mode for carrying out the invention and will enable those skilled in the art to utilize the invention.

[0147] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and exemplary embodiments are to be considered as exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

[0148] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A cleaning device, characterized in that, include: A cleaning system used to clean workpieces to be processed; An anti-static component, at least partially disposed in the cleaning mechanism, is used to remove static electricity from the workpiece to be treated; A conveying mechanism is configured to carry the workpiece to be processed and convey it to the cleaning mechanism, and the conveying mechanism is capable of driving the finished workpiece after it has been cleaned by the cleaning mechanism to move away from the cleaning mechanism.

2. The cleaning device according to claim 1, characterized in that, Also includes: A fixing mechanism, corresponding to the conveying mechanism, is used to fix the workpiece to be processed; The antistatic component is at least partially disposed in the fixing mechanism.

3. The cleaning device according to claim 2, characterized in that, The fixing mechanism includes a pressure drive source, a connecting plate and a first fixing member. The output end of the pressure drive source is detachably connected to the first fixing member through the connecting plate. The pressure drive source can drive the first fixing member to move towards the cleaning mechanism through the connecting plate, so that the first fixing member passes through the first fixing hole of the workpiece to be processed. The antistatic component includes a first conductive element, which is disposed on the side of the connecting plate facing the cleaning mechanism, and the first conductive element can pass through the second fixing hole of the workpiece to be treated.

4. The cleaning device according to claim 3, characterized in that, The first conductive element is detachably connected to the connecting plate.

5. The cleaning device according to claim 3, characterized in that, The first conductive element includes a housing and a movable element, the movable element passing through the housing and being able to slide relative to the housing, and the movable element passing through the second fixing hole of the workpiece to be processed; The antistatic component also includes a first conductor, one end of which is electrically connected to the movable part, and the other end is grounded.

6. The cleaning apparatus according to claim 5, characterized in that, The movable component is provided with a grounding hole, and the first wire passes through the grounding hole and is electrically connected to the movable component through a connector.

7. The cleaning apparatus according to claim 5, characterized in that, The first conductive element further includes: An elastic element is sleeved on the outside of the movable element and disposed between the movable element and the outer shell.

8. The cleaning apparatus according to claim 5, characterized in that, The outer casing includes: A sliding portion, wherein the movable member passes through the sliding portion and slides in cooperation with the sliding portion; A connecting part is provided on the side of the sliding part away from the moving member, and the connecting part is magnetically connected to the connecting plate.

9. The cleaning apparatus according to claim 3, characterized in that, The first fastener includes: The fixing part is detachably connected to the connecting plate; An insulating elastic part is disposed at the end of the fixing part away from the connecting plate, and the insulating elastic part passes through the first fixing hole of the workpiece to be processed.

10. The cleaning apparatus according to claim 2, characterized in that, The fixing mechanism includes a fixing seat and a second fixing member. The fixing seat is disposed on the conveying mechanism, and the second fixing member is disposed on the side of the fixing seat facing the workpiece to be processed. The second fixing member passes through the first fixing hole of the workpiece to be processed. The antistatic component includes a second conductive element, which is disposed on the side of the fixing base facing the workpiece to be processed, and the second conductive element can pass through the second fixing hole of the workpiece to be processed.

11. The cleaning apparatus according to any one of claims 1-10, characterized in that, The cleaning mechanism includes a nozzle for spraying dry ice onto the workpiece to be treated, and the nozzle is made of metal. The antistatic component also includes a second wire, one end of which is electrically connected to the nozzle and the other end is grounded.

12. The cleaning apparatus according to claim 11, characterized in that, The cleaning device also includes a conveying pipe, one end of which is provided with an inlet and the other end is connected to the nozzle. The conveying pipe is made of metal or the inner wall of the conveying pipe is provided with a metal layer. The antistatic component also includes a third conductor, one end of which is electrically connected to the delivery pipe and the other end is grounded.

13. The cleaning apparatus according to claim 12, characterized in that, The nozzle has a tapered structure at the end furthest from the delivery pipe, with the larger end of the tapered structure facing the delivery pipe and the smaller end facing the workpiece to be processed.

14. The cleaning apparatus according to claim 11, characterized in that, The cleaning mechanism also includes a moving component, the output end of which is connected to the nozzle, and the moving component can drive the nozzle to move along the X, Y and Z directions; Among them, the X-axis, the Y-axis, and the Z-axis are all perpendicular to each other.

15. The cleaning apparatus according to any one of claims 1-10, characterized in that, The antistatic component also includes a static eliminator, which is configured correspondingly to the cleaning mechanism. The static eliminator is used to eliminate static electricity generated on the workpiece after it has been cleaned by the cleaning mechanism.

16. The cleaning apparatus according to claim 15, characterized in that, The workpiece to be processed is provided with a central area and an edge area corresponding to the cleaning mechanism. The edge area is located around the central area, and the electrostatic voltage of the central area is greater than that of the edge area. The number of static eliminators is multiple, and the multiple static eliminators are arranged corresponding to the central area and around the central area.

17. The cleaning apparatus according to claim 16, characterized in that, The static elimination time of the static eliminator is 0 to 0.5 seconds.

18. A cleaning method, characterized in that, The cleaning method includes cleaning the workpiece to be treated using the cleaning apparatus as described in any one of claims 1 to 17, wherein the cleaning method includes the following steps: The workpiece to be processed is placed in the conveying mechanism, which can carry and move the workpiece towards the cleaning mechanism. The cleaning unit cleans the workpiece to be processed, and the anti-static component removes static electricity from the workpiece to be processed, forming the finished workpiece. The conveying mechanism can drive the finished workpiece to move away from the cleaning mechanism.

19. The cleaning method according to claim 18, characterized in that, The following steps are included before the cleaning unit cleans the workpiece to be processed: The conveying mechanism moves the workpiece to be processed to the fixed mechanism; The downward pressure drive source of the fixing mechanism drives the first fixing member and the first conductive member to move closer to the cleaning mechanism through the connecting plate, so that the first fixing member passes through the first fixing hole of the workpiece to be processed, the first conductive member passes through the second fixing hole of the workpiece to be processed, and the first conductive member is grounded through the first wire.

20. The cleaning method according to claim 18, characterized in that, Before the cleaning mechanism cleans the workpiece, the moving component of the cleaning mechanism drives the nozzle to move along the X, Y and Z directions to adjust the position of the nozzle relative to the workpiece.

21. The cleaning method according to claim 20, characterized in that, After the nozzle position is adjusted, the delivery pipe of the cleaning mechanism delivers dry ice to the nozzle, causing the nozzle to spray dry ice onto the workpiece to be treated. The nozzle is grounded through the second wire, and the delivery pipe is grounded through the third wire.

22. The cleaning method according to claim 21, characterized in that, When dry ice is sprayed onto the workpiece from the nozzle, an electrostatic eliminator is used to eliminate the static electricity generated on the workpiece.

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