Plasma surface cleaning machine

Abstract

This invention discloses a plasma surface cleaning machine, which includes a frame, a conveying device, a plasma nozzle device, and a ventilation system. The frame includes a working chamber and a main unit integration area. The conveying device is disposed in the working chamber. The output ends of the plasma nozzle device are disposed on both sides of the conveying device. The conveying device includes a crawler conveyor, several positioning clamps, and a chain structure. The crawler conveyor is disposed through the bottom of the working chamber. Several positioning clamps are rotatably connected to the surface of the crawler structure. The chain structure is installed on the inner side of the crawler structure. The positioning clamps are connected to the inner side of the crawler structure through a rotating shaft. The rotating shaft is engaged with the chain structure through a preset gear, so that each positioning clamp rotates while rolling with the crawler structure. Through the rotational design of the positioning clamps during the conveying process, the plasma surface cleaning machine ensures that the workpiece rotates continuously, and the plasma can act evenly on the entire surface of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and in particular to a plasma surface cleaning machine. Background Technology

[0002] Surface cleaning, activation, and modification are key pre-processes in many industrial manufacturing sectors. Their purpose is to remove organic contaminants and dust from material surfaces and increase their surface energy to enhance the adhesion of subsequent processes (such as spraying, bonding, and screen printing). This is especially important for plastic materials, such as plastic water bottles, which have low surface energy and may contain mold release agents, requiring effective surface treatment before screen printing. Currently, atmospheric pressure plasma surface treatment technology is widely used in these fields due to its high efficiency, environmental friendliness, and uniform and stable results. This technology typically involves spraying plasma onto the workpiece surface using an atmospheric plasma nozzle to achieve cleaning and activation.

[0003] However, existing plasma surface cleaning equipment still has many shortcomings in terms of structure and functional integration. First, the plasma main unit in common equipment is often distributed or separated from the processing chamber, resulting in a large overall footprint. Second, in terms of workpiece conveying and processing, many devices use a simple linear conveying structure, where the workpiece maintains a fixed posture during transport. This means that the plasma nozzle can only treat specific surface areas of the workpiece. Furthermore, plasma treatment generates small amounts of byproducts such as ozone and dust. Existing equipment has low efficiency in collecting harmful substances, which may escape into the working environment, posing a potential threat to the health of operators and failing to meet increasingly stringent environmental and safety production requirements. Summary of the Invention

[0004] Therefore, it is necessary to provide a plasma surface cleaning machine to address the technical problems of insufficient integration, cleaning effect, and waste collection capacity of existing plasma surface cleaning equipment.

[0005] A plasma surface cleaning machine includes a frame, a conveying device, a plasma nozzle device, and a ventilation system. The frame includes a working chamber and a main unit integration area. The working chamber is located on the bottom side of the frame body, and the main unit integration area is located on the top side of the frame body relative to the working chamber. The main unit integration area is used to house the main units of multiple atmospheric plasma machines that are equipped with plasma nozzle devices. The conveying device is located in the working chamber and extends through one side of the working chamber to the other side. The plasma nozzle device is located inside the working chamber, and its output ends are located on both sides of the conveying device and face the conveying device respectively. The ventilation system is located in the main unit integration area, and its input end is connected to the working chamber, while its output end extends from the top wall of the main unit integration area to the outside of the frame.

[0006] The conveying device includes a crawler conveyor, several positioning clamps, and a chain structure. The crawler conveyor is installed at the bottom of the working chamber. The positioning clamps are arranged at equal intervals along the conveying direction of the bottle and are rotatably connected to the surface of the crawler conveyor's track structure for clamping the bottle. The chain structure is installed on the inner side of the crawler structure, corresponding to the positioning clamps, along the rolling direction of the crawler conveyor's track structure. The bottom end of each positioning clamp is connected to the inner side of the crawler structure through a rotating shaft. The rotating shaft is meshed with the chain structure through a preset gear, so that each positioning clamp rotates while rolling with the crawler structure, thereby driving the bottle to rotate relative to the plasma nozzle device during the conveying process.

[0007] In one embodiment, the workflow of the plasma surface cleaning machine described above includes the following steps: the operator places the product into the positioning fixture of the conveying device; the gear at the lower end of the positioning fixture shaft meshes with the chain, causing the product to rotate, and the product enters the cleaning area while rotating; when the product enters the machine frame, a sensor is triggered, and the nozzle device is activated for cleaning; when the product reaches the end of the conveyor, another sensor is triggered, stopping the conveying and nozzle operation; after the operator removes the product, the conveying device continues to operate, realizing cyclic operation; during the cleaning process, dust and harmful gases are collected and treated centrally by the ventilation system inside the machine frame.

[0008] In one embodiment, the plasma nozzle device described above includes two sets of plasma nozzle assemblies, which are respectively disposed on both sides of the track structure and installed in the working chamber; the nozzle of each plasma nozzle assembly is arranged to face the top side space of the track structure in conjunction with the clamped bottle.

[0009] In one embodiment, the input of each of the plasma nozzle assemblies described above is connected to the host of an atmospheric plasma generator within the host integration area.

[0010] In one embodiment, each of the plasma nozzle assemblies described above is provided with a plurality of plasma nozzles.

[0011] In one embodiment, the working cavity is provided with a through cavity and two mounting platforms. The through cavity is located in the middle of the working cavity, and both ends of the through cavity are connected to the outside of the housing. The two mounting platforms are respectively located on both sides of the through cavity, and each mounting platform is set as a support surface of a preset height.

[0012] In one embodiment, the aforementioned conveying device is installed inside the through cavity; the two sets of plasma nozzle assemblies are respectively installed on the surfaces of the two mounting platforms.

[0013] In one embodiment, the top surface of the track structure is set at the same height as the mounting platforms on both sides, so that the nozzles of the two plasma nozzle assemblies can be horizontally pointed to the top space of the track structure.

[0014] In one embodiment, the ventilation system described above includes a ventilation duct, the output end of which is disposed on the top wall of the main unit integration area, and the input end of which extends toward the bottom to the working cavity.

[0015] In one embodiment, the ventilation system further includes a fan, which is installed on the outer surface of the top wall of the main unit integration area, and the input end of the fan is connected to the output end of the ventilation duct.

[0016] In one embodiment, the plasma surface cleaning machine described above further includes a human-machine interface, which is disposed on the side wall surface of the main unit integration area.

[0017] In one embodiment, the aforementioned human-machine interface is electrically connected to the conveying device, the plasma nozzle device, and the ventilation system via a pre-set control system.

[0018] The aforementioned plasma surface cleaning machine centrally houses the main units of multiple atmospheric plasma machines in the main unit integration area at the top of the frame, solving the problem of "dispersed plasma main units" in the original equipment and achieving efficient equipment integration and space optimization. Secondly, through the linear conveying structure and automated sensor control that runs through the working chamber, continuous assembly line operation is achieved. Workpieces can be loaded, cleaned, and unloaded without interruption, resulting in high production efficiency and significantly improving cleaning efficiency and automation. Thirdly, through the self-rotation design of the positioning fixture during the conveying process, the workpiece rotates continuously as it passes through the plasma area. The plasma can act evenly on the entire surface of the workpiece (such as a plastic water bottle), avoiding cleaning blind spots caused by being stationary. Each workpiece is treated and cleaned in the same way, ensuring a high degree of consistency in the surface treatment quality of batch products and providing a reliable guarantee for subsequent screen printing processes. In addition, the input end of the ventilation system is directly connected to the working chamber, and harmful substances are discharged outdoors from the top. It can suck up dust and harmful gases as soon as they are generated, preventing them from spreading in the working chamber and solving the problem of difficulty in collecting and treating dust and harmful gases. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a plasma surface cleaning machine in one embodiment; Figure 2 This is a schematic diagram of the structure of a plasma surface cleaning machine in one embodiment; Figure 3 This is a schematic diagram of the structure of a plasma surface cleaning machine in one embodiment. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening 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 possible implementation.

[0026] Please see Figures 1 to 3This invention discloses a plasma surface cleaning machine 1, which includes a frame 10, a conveying device 20, a plasma nozzle device 30, and a ventilation system 40. The frame 10 includes a working chamber a and a main unit integration area b. The working chamber a is located on the bottom side of the frame 10 body, and the main unit integration area b is located on the top side of the frame 10 body relative to the working chamber a. The main unit integration area b is used to accommodate the main unit 50 of multiple atmospheric plasma machines that are equipped with plasma nozzle devices 30. Based on this, the conveying device 20 is located in the working chamber a and extends through one side of the working chamber a to... On the other side, a linear conveying structure is formed that covers and completely passes through the working chamber a. The workpiece to be cleaned, such as the body of a plastic water bottle, is fed from one end of the conveying device 20, passes through the working chamber a along a preset linear path, and is unloaded from the other end of the conveying mechanism. The plasma nozzle device 30 is located inside the working chamber a, and the output ends of the plasma nozzle device 30 are located on both sides of the conveying device 20 and face the conveying device 20 respectively. The ventilation system 40 is located in the main unit integration area b, and the input end of the ventilation system 40 is connected to the working chamber a. The output end of the ventilation system 40 extends from the top wall of the main unit integration area b to the outside of the frame 10. Specifically, the conveying device 20 includes a crawler conveyor 21, several positioning clamps 22, and a chain structure (not shown). The crawler conveyor 21 is installed through the bottom of the working cavity a, thus forming a through linear conveying mechanism. The several positioning clamps 22 are arranged at equal intervals along the conveying direction of the bottle body and are rotatably connected to the surface of the crawler structure 211 of the crawler conveyor 21 for clamping the bottle body. The chain structure is installed on the inner side of the crawler structure 211 along the rolling direction of the crawler structure 211 of the crawler conveyor 21, corresponding to the several positioning clamps 22. Thus, the bottom end of each positioning clamp 22 is penetrated to the inner side of the crawler structure 211 through a rotating shaft (not shown). The rotating shaft is meshed with the chain structure through a preset gear (not shown), so that each positioning clamp 22 rotates while rolling with the crawler structure 211, thereby driving the bottle body to rotate relative to the plasma nozzle device 30 during the conveying process, thereby achieving the purpose of cleaning without dead angles.

[0027] Based on the above structure, the working process of the plasma surface cleaning machine 1 includes the following steps: The operator places the product into the positioning fixture 22 of the conveying device 20; the gear at the lower end of the shaft of the positioning fixture 22 meshes with the chain, causing the product to rotate, and the product enters the cleaning area while rotating; when the product enters the machine frame 10, a sensor is triggered to start the nozzle device for cleaning; when the product reaches the end of the conveying, another sensor is triggered to stop the conveying and nozzle operation; after the operator removes the product, the conveying device 20 continues to run, realizing cyclic operation; during the cleaning process, the ventilation system 40 inside the machine frame 10 centrally collects and treats dust and harmful gases.

[0028] Furthermore, the plasma nozzle device 30 includes two sets of plasma nozzle assemblies 31, which are respectively disposed on both sides of the track structure 211 and installed in the working chamber a. The nozzle of each plasma nozzle assembly 31 is positioned to face the top space of the track structure 211 in conjunction with the bottle that has been clamped in place. When the bottle passes between the two sets of plasma nozzle assemblies 31, the plasma nozzle assembly 31 sprays plasma fluid onto the surface of the bottle to perform plasma cleaning.

[0029] Specifically, in one embodiment, the input of each plasma nozzle assembly 31 is connected to the host 50 of the atmospheric plasma generator within the host integration area b; in another embodiment, each plasma nozzle assembly 31 is provided with multiple plasma nozzles to cover a wider plasma spray range.

[0030] Furthermore, the working chamber a is provided with a through cavity a1 and two mounting platforms a2. The through cavity a1 is located in the middle of the working chamber a, and both ends of the through cavity a1 are connected to the outside of the box. The two mounting platforms a2 are respectively located on both sides of the through cavity a1, and each mounting platform a2 is set as a support surface of a preset height. Based on this, the conveying device 20 is installed in the through cavity a1; two sets of plasma nozzle assemblies 31 are respectively installed on the surfaces of the two mounting platforms a2. Specifically, in one embodiment, the top surface of the track structure 211 is set at the same height as the mounting platforms a2 on both sides, so that the nozzles of the two plasma nozzle assemblies 31 can be horizontally pointed to the top space of the track structure 211, thereby covering the effective cleaning range of the bottle.

[0031] Furthermore, the ventilation system 40 includes a ventilation duct 41, the output end of which is disposed on the top wall of the main unit integration area b, and the input end of which extends toward the bottom to the working chamber a, so as to collect dust and harmful mist generated in the working chamber a.

[0032] Specifically, in one embodiment, the ventilation system 40 further includes a fan 42, which is installed on the outer surface of the top wall of the main unit integration area b. The input end of the fan 42 is connected to the output end of the ventilation duct 41, and the output end of the fan 42 is connected to an external waste collection and treatment device, thereby realizing the collection and treatment of dust and harmful mist.

[0033] Furthermore, the plasma surface cleaning machine 1 also includes a human-machine interface 60, which is set on the side wall surface of the main unit integration area b. The human-machine interface 60 is electrically connected to the conveying device 20, the plasma nozzle device 30 and the ventilation system 40 through a preset control system, thereby realizing the interactive actions between the operator and the plasma surface cleaning machine 1.

[0034] In summary, the plasma surface cleaning machine disclosed in this invention integrates the main units of multiple atmospheric plasma machines in the main unit integration area at the top of the frame, solving the problem of "dispersed plasma main units" in the original equipment and achieving efficient integration and space optimization. Secondly, through the linear conveying structure and automated sensor control that runs through the working chamber, continuous assembly line operation is achieved. Workpieces can be loaded, cleaned, and unloaded without interruption, resulting in high production efficiency and significantly improving cleaning efficiency and automation. Thirdly, through the self-rotation design of the positioning fixture during the conveying process, the workpiece rotates continuously as it passes through the plasma area. The plasma can act evenly on the entire surface of the workpiece (such as a plastic water bottle), avoiding cleaning blind spots caused by being stationary. Each workpiece is processed and cleaned in the same way, ensuring a high degree of consistency in the surface treatment quality of batch products and providing a reliable guarantee for subsequent screen printing processes. In addition, the input end of the ventilation system is directly connected to the working chamber, and harmful substances are discharged outdoors from the top. It can suck up dust and harmful gases as soon as they are generated, preventing them from spreading in the working chamber and solving the problem of difficulty in collecting and treating dust and harmful gases.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A plasma surface cleaning machine, characterized in that, include: The system comprises a frame, a conveying device, plasma nozzle devices, and a ventilation system. The frame includes a working chamber and a main unit integration area. The working chamber is located on the bottom side of the frame body, and the main unit integration area is located on the top side of the frame body relative to the working chamber. The main unit integration area is used to house the main units of multiple atmospheric plasma generators that are equipped with plasma nozzle devices. The conveying device is located in the working chamber and extends through the working chamber from one side to the other. The plasma nozzle devices are located inside the working chamber, and their output ends are located on both sides of the conveying device and face the conveying device respectively. The ventilation system is located in the main unit integration area, and its input end is connected to the working chamber, while its output end extends from the top wall of the main unit integration area to the outside of the frame. The conveying device includes a crawler conveyor, several positioning clamps, and a chain structure. The crawler conveyor is installed at the bottom of the working chamber. The positioning clamps are arranged at equal intervals along the conveying direction of the bottle and are rotatably connected to the surface of the crawler conveyor's track structure for clamping the bottle. The chain structure is installed on the inner side of the crawler structure, corresponding to the positioning clamps, along the rolling direction of the crawler conveyor's track structure. The bottom end of each positioning clamp is connected to the inner side of the crawler structure through a rotating shaft. The rotating shaft is meshed with the chain structure through a preset gear, so that each positioning clamp rotates while rolling with the crawler structure, thereby driving the bottle to rotate relative to the plasma nozzle device during the conveying process.

2. The plasma surface cleaning machine according to claim 1, characterized in that, The plasma nozzle device includes two sets of plasma nozzle assemblies, which are respectively located on both sides of the track structure and installed in the working chamber. The nozzle of each plasma nozzle assembly is positioned to face the top side space of the track structure in conjunction with the clamped bottle.

3. The plasma surface cleaning machine according to claim 2, characterized in that, The input of each plasma nozzle assembly is connected to the main unit of the atmospheric plasma generator within the main unit integration area.

4. The plasma surface cleaning machine according to claim 3, characterized in that, Each plasma nozzle assembly is equipped with multiple plasma nozzles.

5. The plasma surface cleaning machine according to claim 4, characterized in that, The working chamber is provided with a through cavity and two mounting platforms. The through cavity is located in the middle of the working chamber and its two ends are connected to the outside of the box. The two mounting platforms are respectively located on both sides of the through cavity, and each mounting platform is set as a support surface of a preset height.

6. The plasma surface cleaning machine according to claim 5, characterized in that, The conveying device is installed inside the through cavity; two sets of plasma nozzle assemblies are respectively installed on the surfaces of the two mounting platforms.

7. The plasma surface cleaning machine according to claim 6, characterized in that, The top surface of the track structure is set at the same height as the mounting platforms on both sides, so that the nozzles of the two plasma nozzle assemblies can be horizontally pointed to the top space of the track structure.

8. The plasma surface cleaning machine according to claim 7, characterized in that, The ventilation system includes a ventilation duct, the output end of which is located on the top wall of the main unit integration area, and the input end of which extends to the bottom of the working cavity.

9. The plasma surface cleaning machine according to claim 8, characterized in that, The ventilation system also includes a fan, which is installed on the outer surface of the top wall of the main unit integration area, and the input end of the fan is connected to the output end of the ventilation duct.

10. The plasma surface cleaning machine according to claim 9, characterized in that, The plasma surface cleaning machine also includes a human-machine interface, which is located on the side wall surface of the main unit integration area.

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