Automatic static removal method for anti-static cart casters

Abstract

The present invention discloses an automatic static removal method for anti-static cart casters, comprising the following steps: S1, vehicle identification and recording; S2, obtaining predicted ground resistance; S3, static elimination processing; S4, obtaining re-measured ground resistance; and S5, caster ground resistance comparison. The present invention can automatically clean and dry the anti-static cart casters under a simulated loading condition, and can transport anti-static carts that do not require static removal, have completed static removal, or require multiple static removals on a conveyor line, significantly reducing the maintenance workload of the anti-static carts. Not only does it avoid repeated static removal, but it also prevents static removal omissions. It can also extend the service life of the anti-static cart casters and the static removal processing cycle.

Description

Technical Field

[0001] The invention belongs to the technical field of static electricity removal, and in particular relates to an automatic static electricity removal method for anti-static cart casters used in semiconductor processes and electronic manufacturing. Background Art

[0002] In semiconductor processing and electronics manufacturing, anti-static carts that meet ESD protection requirements are required to transport products in and out. However, during daily transportation and use, the casters of anti-static carts are easily contaminated by dust and chemicals due to the influence of gravity and friction, and thus become ineffective. This is a weak link in a clean environment. Therefore, to prevent damage to static-sensitive products caused by the anti-static failure of the casters, the casters of the anti-static carts need to be treated with static electricity removal.

[0003] At present, the conventional operation method is to manually process the casters regularly, which has the following defects:

[0004] 1. Manual cleaning to eliminate static electricity is not only difficult and inefficient, but the effectiveness of static elimination cannot be guaranteed, causing the risk of damage to static-sensitive products.

[0005] 2. If there are too many anti-static carts without any markings, this will not only increase the cleaning repetition rate, but also increase the cleaning omission rate, thus increasing the workload and the risk of damage to electrostatic products;

[0006] 3. Caster cleaning is carried out completely under no-load conditions, which makes it impossible to effectively clean the casters in a simulated actual use state. Therefore, the static elimination treatment cycle is short. Summary of the Invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a new automatic static elimination method for anti-static cart casters.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] An automatic static removal method for anti-static cart casters, the production line used has an information identification area, a caster grounding resistance prediction area, a caster static removal area, and a caster grounding resistance prediction area arranged in sequence, and the automatic static removal method includes the following steps:

[0010] S1. Vehicle identification and recording

[0011] When the anti-static cart enters the information identification area from the entrance of the assembly line, the information of each anti-static cart entering from the assembly line is identified by card reading, scanning or sensing;

[0012] S2. Obtain predicted ground resistance

[0013] Mounting onboard measuring electrodes on a registered anti-static cart to simulate the cart moving synchronously with the production line while carrying products, and simultaneously moving the anti-static cart to the caster grounding resistance prediction area. A closed detection circuit is formed by the resistance measuring instrument, the onboard measuring electrodes, and the predicted electrodes in the caster grounding resistance prediction area to obtain the predicted grounding resistance R1. Where R1>1GΩ, the anti-static cart moves to the caster anti-static area, and R1≤1GΩ, the anti-static cart exits the entrance of the production line.

[0014] S3. Static elimination treatment

[0015] Move the wheels to the caster anti-static area for cleaning with cleaning fluid and drying;

[0016] S4. Obtain re-measured ground resistance

[0017] A closed detection circuit is formed by the resistance measuring instrument, the vehicle-mounted measuring electrode, and the re-measurement electrode in the caster grounding resistance re-measurement area to obtain the re-measured grounding resistance R2;

[0018] S5. Caster grounding resistance comparison

[0019] If R2>1GΩ, the anti-static cart is returned to the caster anti-static area for one or more cleaning and drying processes; if R2≤1GΩ, the anti-static cart is transported from the exit of the assembly line, the on-board measuring electrodes are removed, and after the static electricity of the caster of one anti-static cart is removed, the above steps S1 to S5 are repeated to perform static electricity removal on the casters of the anti-static carts whose caster grounding resistance is greater than 1GΩ.

[0020] Preferably, in S1, a sign displaying the number information is formed on each anti-static cart, and an identifier capable of obtaining the information on the sign is provided in the information identification area. The sign is an inductive identification card, and the identifier is a card reader. Each anti-static cart is provided with an NFC electronic tag, and the measuring device is equipped with a card reader to automatically sense the anti-static cart number to complete the inspection.

[0021] According to one specific embodiment and preferred aspect of the present invention, in S2, the prediction electrode is connected to the negative terminal of the resistance measuring instrument, the vehicle-mounted measurement electrode is connected to the positive terminal of the resistance measuring instrument, and the prediction electrode and the vehicle-mounted measurement electrode are connected via an anti-static cart. This closed circuit can be used to obtain a predicted ground resistance, thereby determining whether the anti-static cart requires static dissipation.

[0022] According to another specific embodiment and preferred aspect of the present invention, in step S3, the cleaning components used for cleaning with cleaning liquid include a cleaning tank, a cleaning roller, and a cleaning drive. The cleaning tank contains an electrostatic cleaning liquid, and the cleaning roller and casters support and roll the anti-static cart on the assembly line. The cleaning roller not only enables the caster-type cleaning, but also enables the cart to be pushed.

[0023] Preferably, the cleaning component further includes an electrostatic cleaning liquid circulation assembly connected to the cleaning pool to ensure the quality of the cleaning liquid and improve the static removal effect.

[0024] According to another specific embodiment and preferred aspect of the present invention, in step S3, the drying process comprises a drying tank, a drying roller, and a drying drive. The drying roller and casters provide rolling support and transport of the anti-static cart on the assembly line, thereby preventing the cleaning fluid from adhering to the casters and contaminating the workshop or the wheels.

[0025] Preferably, the drying roller is a heating roller with a heating medium passing through the interior, or the drying roller is an electric heating roller.

[0026] According to another specific implementation and preferred aspect of the present invention, in S4, the re-measurement electrode is connected to the negative pole of the resistance measuring instrument, the on-board measurement electrode is connected to the positive pole of the resistance measuring instrument, and the re-measurement electrode and the on-board measurement electrode are connected through an anti-static cart.

[0027] Preferably, the retest electrode and the prediction electrode are arranged in parallel and are connected to form a closed loop when the anti-static cart is moved. This makes it very convenient to obtain the predicted ground resistance and the retest ground resistance.

[0028] Furthermore, if R1>1GΩ>R2, the anti-static cart will pass through the information identification area, caster grounding resistance prediction area, caster anti-static area, and caster grounding resistance prediction area from the entrance to the exit of the assembly line. This allows for rapid static removal of the cart's casters in the same transmission direction.

[0029] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0030] The present invention can automatically clean and dry the casters of the anti-static cart under a simulated working condition of a loaded anti-static cart, and can transport anti-static carts that do not need to undergo static electricity removal, have completed static electricity removal, or require multiple static electricity removal processes on a transport line, thereby significantly reducing the maintenance workload of the anti-static carts. Not only does the invention avoid repeated static electricity removal, but it also avoids missing static electricity removal processes, and can also extend the service life of the casters of the anti-static carts and the static electricity removal treatment cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1Schematic diagram of the working principle of the automatic static removal system of the present invention;

[0032] Figure 2 Schematic diagram of the main view of the automatic static elimination system of the present invention (the anti-static cart is located at the static electricity prediction module);

[0033] Figure 3 Schematic diagram of the front view of the automatic static removal system of the present invention (the anti-static cart is located in the clean area);

[0034] Figure 4 This is a schematic diagram of the main view of the automatic static removal system of the present invention (the anti-static cart is located in the drying area);

[0035] Figure 5 This is a schematic diagram of the main view of the automatic static removal system of the present invention (the anti-static cart is located at the static re-measurement module);

[0036] Among them: 1. Transmission line; 10. Input section; 11. Anti-static treatment section; 12. Output section;

[0037] 2. Vehicle-mounted measuring electrodes;

[0038] 3. Vehicle identification unit; 30. Signage; 31. Identifier;

[0039] 4. Static elimination unit; 40. Static electricity prediction module; 400. Prediction electrode; 41. Static electricity elimination module; 410. Cleaning components; a. Cleaning tank; b. Cleaning roller; 411. Drying components; c. Drying tank; d. Drying roller; 42. Static electricity re-measurement module; 420. Re-measurement electrode;

[0040] 5. Control unit; 50. Resistance measuring instrument; 51. Controller; 52. Data processor;

[0041] T. Anti-static cart. DETAILED DESCRIPTION

[0042] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0045] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0046] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0047] like Figure 1 As shown, the automatic static removal method for anti-static cart casters of this embodiment adopts an assembly line having an information identification area, a caster grounding resistance prediction area, a caster static removal area, and a caster grounding resistance prediction area arranged in sequence, and the automatic static removal method includes the following steps: S1, vehicle identification and recording; S2, obtaining predicted grounding resistance; S3, static elimination processing; S4, obtaining re-measured grounding resistance; S5, caster grounding resistance comparison.

[0048] Specifically, S1, vehicle identification and recording, when the anti-static cart enters the information identification area from the entrance of the assembly line, the information of each anti-static cart entering from the assembly line is identified by card reading, scanning or sensing;

[0049] S2. Obtain the predicted ground resistance. Install onboard measuring electrodes on a registered anti-static cart to simulate the cart moving synchronously with the production line while carrying products. Simultaneously, move the anti-static cart to the caster ground resistance prediction area. A closed detection circuit is formed by the resistance measuring instrument, the onboard measuring electrodes, and the predicted electrodes in the caster ground resistance prediction area to obtain the predicted ground resistance R1. If R1 > 1 GΩ, the anti-static cart moves to the caster anti-static area. If R1 ≤ 1 GΩ, the anti-static cart exits the production line entrance.

[0050] S3, static elimination treatment, move the wheels to the caster static elimination area for cleaning with cleaning fluid and drying;

[0051] S4, obtaining the re-measured grounding resistance, the resistance measuring instrument, the vehicle-mounted measuring electrode, and the re-measurement electrode in the caster grounding resistance re-measurement area form a closed detection circuit to obtain the re-measured grounding resistance R2;

[0052] S5. Compare the caster grounding resistance. If R2 is greater than 1 GΩ, the anti-static cart is returned to the caster anti-static area for one or more cleaning and drying processes. If R2 is less than or equal to 1 GΩ, the anti-static cart is transported from the exit of the assembly line, and the onboard measuring electrodes are removed. After the static electricity of the caster of one anti-static cart is de-staticized, repeat steps S1 to S5 for each caster with a caster grounding resistance greater than 1 GΩ to perform static electricity de-staticization on the caster.

[0053] Combine Figures 2 to 5 As shown, the automatic static removal system for anti-static cart casters used in the above-mentioned automatic static removal method includes a transmission line 1, a vehicle-mounted measuring electrode 2, a vehicle identification unit 3, a static removal unit 4, and a control unit 5, wherein the control unit 5 includes a resistance measuring instrument 50 and a controller 51 connected to the resistance measuring instrument 50.

[0054] Specifically, the transmission pipeline 1 includes an input section 10, a static removal treatment section 11, and an output section 12 arranged in sequence, and the anti-static cart T can move back and forth on the input section 10, the static removal treatment section 11, and the output section 12.

[0055] The on-board measuring electrode 2 uses a surface resistance meter that complies with ESD standards as a resistance measuring instrument 50 for the ground of the anti-static cart, and uses a 5-pound weight as a measuring electrode on the anti-static cart.

[0056] In this example, the vehicle-mounted measuring electrode 2 is mounted on the anti-static cart T, and the sum of the weight of the vehicle-mounted measuring electrode 2 and the weight of the anti-static cart T is greater than the weight of the product carried by the anti-static cart T (or the weight of the vehicle-mounted measuring electrode 2 is equal to the weight of the product carried by the anti-static cart T).

[0057] The vehicle identification unit 3 includes a sign 30 fixed on each anti-static cart T and corresponding to each other, and an identifier 31 set in the anti-static treatment section 11 and capable of obtaining information on the sign 30, wherein the identifier 31 can record the information of the anti-static cart T corresponding to the sign 30.

[0058] In this example, the tag 30 is an induction identification card and the identifier 31 is a card reader. Each anti-static cart is equipped with an NFC electronic tag, and the measuring device is equipped with a card reader to automatically sense the anti-static cart number to complete the inspection.

[0059] The static electricity removal unit 4 is disposed in the static electricity removal processing section 11 and includes a static electricity prediction module 40 , a static electricity elimination module 41 , and a static electricity re-measurement module 42 , which are disposed in sequence.

[0060] The static electricity prediction module 40 includes a prediction electrode 400 connected to the negative electrode of the resistance measuring instrument 50 , and the static electricity re-measurement module 42 includes a re-measurement electrode 420 connected to the negative electrode of the resistance measuring instrument 50 .

[0061] The static elimination module 41 includes a cleaning component 410 and a drying component 411 which are sequentially arranged along the transport path.

[0062] Specifically, the cleaning component 410 includes a cleaning pool a, a cleaning roller b, and a cleaning drive, wherein the cleaning pool is filled with electrostatic cleaning liquid, and the cleaning roller b and the casters roll and support and transport the anti-static cart to the input section 10 or the output section 12.

[0063] At the same time, the cleaning component 410 also includes an electrostatic cleaning liquid circulation component connected to the cleaning pool a, ensuring the quality of the cleaning liquid and improving the static elimination effect.

[0064] In this example, the cleaning liquid is water, and the cleaning drive is connected to the cleaning roller b by a driving motor and a synchronous transmission member.

[0065] As for the electrostatic cleaning fluid circulation component, it is mainly used to replace the cleaning fluid in the cleaning pool a to ensure the cleaning quality and effect.

[0066] The drying unit 411 includes a drying tank c, a drying roller d, and a drying drive. The drying roller d and the casters roll and support and transport the anti-static cart T to the input section 10 or the output section 12. This prevents the cleaning liquid from adhering to the casters and causing contamination of the workshop or wheels.

[0067] Specifically, steam is introduced into the drying roller d to dry the caster indirectly by the steam, or the drying roller d is an electrically heated roller.

[0068] See also Figure 2 As shown, the resistance measuring instrument 50 forms a closed detection circuit with the prediction electrode 400 and the vehicle-mounted measurement electrode 2 to obtain the predicted ground resistance R1.

[0069] See also Figure 5 As shown, the resistance measuring instrument 50 , the re-measurement electrode 420 and the vehicle-mounted measurement electrode 2 form a closed detection circuit to obtain the re-measured ground resistance R2 .

[0070] Controller 51 is used to control the movement of anti-static cart T on conveyor line 1. This movement of anti-static cart T on conveyor line 1 includes a first movement, where it exits conveyor line 1 from input section 10 and output section 12, and a second movement, where it returns from the static re-measurement module to the static elimination module for N static elimination treatments, where N is an integer ≥ 1. The coordination of the first and second movements ensures that anti-static carts that meet static elimination standards or that do not require static elimination are transported out of the conveyor line from the input and output sections.

[0071] Specifically, R3 is the standard ground resistance of the caster after cleaning, and R3 ≤ 1GΩ. According to ANSI-ESD STM4.1-2017, the resistance of the anti-static cart's working surface to ground must be less than or equal to 1GΩ. Therefore, if the measured resistance of the anti-static cart's working surface to ground is less than 1GΩ, cleaning is complete.

[0072] R1 is the predicted ground resistance, R2 is the re-measured ground resistance, and R3 is the standard ground resistance of the casters after cleaning. When R1 ≤ R3, the anti-static cart exits the transmission line at the input section. When R1 > R3, the anti-static cart moves from the static prediction module to the static elimination module. When R2 ≤ R3, the anti-static cart exits the transmission line at the output section. When R2 > R3, the anti-static cart returns from the static re-measurement module to the static elimination module. By comparing ground resistances, it is possible to quickly determine whether the anti-static cart's casters require cleaning or whether they meet cleaning requirements.

[0073] In addition, the control unit 5 also includes a data processor 52 connected to the resistance measuring instrument 50, wherein the card reader 31 is connected to the data processor 52, and the data processor 52 stores and records the predicted grounding resistance and re-measured grounding resistance information of the corresponding anti-static cart.

[0074] At the same time, it should be noted that the assembly line in this example can be implemented by moving back and forth using a top truss crane mode, or by using a track design to implement the movement of anti-static carts. Moreover, corresponding ground resistance comparison is performed, and those that do not meet the requirements are returned for re-cleaning, and those that meet the requirements are passed out of the assembly line. This is a conventional means of assembly line operation, and it is clear and feasible without elaborating on it here.

[0075] In summary, the implementation process of this embodiment is as follows:

[0076] 1) When the anti-static cart enters the information identification area from the entrance of the assembly line, the card reader recognizes the NFC electronic tag and automatically senses the anti-static cart number to complete the inspection and record;

[0077] 2) Mount the on-board measuring electrodes on a registered anti-static cart to simulate the cart moving synchronously with the production line while carrying products. Simultaneously, move the anti-static cart to the caster grounding resistance prediction area. A closed detection circuit is formed by the resistance measuring instrument, the on-board measuring electrodes, and the predicted electrodes in the caster grounding resistance prediction area to obtain the predicted grounding resistance R1. If R1 > 1 GΩ, the anti-static cart moves to the caster anti-static area. If R1 ≤ 1 GΩ, the anti-static cart exits the production line entrance.

[0078] 3) The wheels are moved to the caster anti-static area for cleaning and drying, wherein a cleaning roller and a drying roller are used for rolling support respectively, and the wheels are first cleaned with a cleaning solution and then dried;

[0079] 4) The dried anti-static cart is moved to the re-measurement electrode, and a closed detection circuit is formed by the resistance meter, the on-board measuring electrode, and the re-measurement electrode in the caster grounding resistance re-measurement area to obtain the re-measured grounding resistance R2, where R2>1GΩ, the anti-static cart is returned to the caster anti-static area for one or more cleaning and drying processes; R2≤1GΩ, the anti-static cart is transported from the exit of the assembly line, and the on-board measuring electrode is removed. After the static electricity of the caster of the anti-static cart is de-staticized, the above steps are repeated for each caster of the anti-static cart with a caster grounding resistance greater than 1GΩ to perform static electricity removal.

[0080] In summary, this embodiment has the following advantages:

[0081] 1. Under the working condition of simulating an anti-static cart being loaded, it can automatically clean and dry the anti-static cart casters, and can transport anti-static carts that do not need to be de-staticized, have completed de-staticization, or need multiple de-staticization on the conveyor line, greatly reducing the maintenance workload of the anti-static carts. Not only does it avoid repeated de-staticization, but it also prevents the omission of de-staticization. At the same time, it can also extend the service life of the anti-static cart casters and the de-staticization treatment cycle;

[0082] 2. Automatically clean and dry casters, improve maintenance efficiency, and reduce working hours by 80%. Integrate anti-static cart cleaning, maintenance, and measurement into one station, saving 50% of ESD (static electricity) detection efficiency. Automatically complete spot inspections, upload data, and archive them. Avoid contamination of the clean room by dirty casters. The anti-static performance of the anti-static cart is restored to more than 95%.

[0083] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. An automatic static removal method for anti-static cart casters, characterized by: The production line used has an information identification area, a caster grounding resistance prediction area, a caster static removal area, and a caster grounding resistance re-measurement area, which are arranged in sequence. The automatic static removal method includes the following steps: S1. Vehicle identification and recording When the anti-static cart enters the information identification area from the entrance of the assembly line, the information of each anti-static cart entering from the assembly line is identified by card reading, scanning or sensing; S2. Obtain predicted ground resistance The on-board measuring electrode is set up on a registered anti-static cart to simulate the anti-static cart moving synchronously with the cart relative to the production line while carrying products. At the same time, the anti-static cart is moved to the caster grounding resistance prediction area. A closed detection circuit is formed by the resistance measuring instrument, the on-board measuring electrode, and the predicted electrode in the caster grounding resistance prediction area to obtain the predicted grounding resistance R1, where R1>1GΩ. The anti-static cart moves to the caster anti-static area, R1≤1GΩ, and the anti-static cart exits from the entrance of the production line. The predicted electrode is connected to the negative pole of the resistance measuring instrument, the on-board measuring electrode is connected to the positive pole of the resistance measuring instrument, and the predicted electrode and the on-board measuring electrode are connected through the anti-static cart. S3. Static elimination treatment Move the wheels to the caster anti-static area for cleaning with cleaning fluid and drying; S4. Obtain re-measured ground resistance A closed detection circuit is formed by the resistance measuring instrument, the vehicle-mounted measuring electrode, and the re-measurement electrode in the caster ground resistance re-measurement area to obtain the re-measured ground resistance R2. The re-measurement electrode is connected to the negative electrode of the resistance measuring instrument, and the vehicle-mounted measuring electrode is connected to the positive electrode of the resistance measuring instrument. The re-measurement electrode and the vehicle-mounted measuring electrode are connected via an anti-static cart. The re-measurement electrode and the prediction electrode are arranged in parallel and are connected to form a closed loop when the anti-static cart is moved. S5. Caster grounding resistance comparison If R2>1GΩ, the anti-static cart should be returned to the caster anti-static area for one or more cleaning and drying processes. R2≤1GΩ, the anti-static cart is transported from the outlet of the assembly line, the on-board measuring electrode is removed, and after the static electricity of the caster of one anti-static cart is removed, the above steps S1 to S5 are repeated to perform static electricity removal on the casters of the anti-static carts whose caster grounding resistance is greater than 1GΩ.

2. The automatic static removal method for anti-static cart casters according to claim 1 is characterized in that: In S1, a sign capable of displaying number information is formed on each anti-static cart, and an identifier capable of obtaining information on the sign is provided in the information identification area.

3. The automatic static removal method for anti-static cart casters according to claim 1 is characterized in that: In S3, the cleaning components used for cleaning with cleaning liquid include a cleaning pool, a cleaning roller, and a cleaning drive, wherein the cleaning pool is filled with electrostatic cleaning liquid, and the cleaning roller and the casters roll and support and transport the anti-static cart on the assembly line.

4. The automatic static removal method for anti-static cart casters according to claim 3 is characterized in that: The cleaning component also includes an electrostatic cleaning liquid circulation component connected to the cleaning pool.

5. The automatic static removal method for anti-static cart casters according to claim 1 is characterized in that: In S3, the drying components used in the drying process include a drying tank, a drying roller, and a drying driver, wherein the drying roller and the casters rollingly support and transport the anti-static cart on the assembly line.

6. The automatic static removal method for anti-static cart casters according to claim 5, characterized in that: The drying roller is a heating roller with a heating medium passing through the interior.

7. The automatic static removal method for anti-static cart casters according to claim 5, characterized in that: The drying roller is an electric heating roller.

8. The automatic static removal method for anti-static cart casters according to claim 1 is characterized in that: R1>1GΩ>R2, the anti-static cart moves from the entrance to the exit of the assembly line and passes through the information identification area, caster grounding resistance prediction area, caster anti-static area, and caster grounding resistance re-measurement area in sequence.

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