Plasma cleaning equipment and cleaning method

Abstract

The invention discloses plasma cleaning equipment which is provided with a feeding station for feeding corresponding workpieces, a discharging station for discharging corresponding workpieces and a cleaning station provided with plasma nozzles, the cleaning equipment comprises at least two conveying mechanisms, one end of each conveying mechanism corresponds to the feeding station, and the other end of each conveying mechanism corresponds to the discharging station. The conveying mechanism passes through the cleaning station; the grabbing mechanism is arranged on the conveying mechanism, reciprocates between the feeding station and the discharging station along with the conveying mechanism and is used for grabbing workpieces. The cleaning station is provided with a movable support capable of translating, and the movable support stretches across the conveying mechanisms and is used for being connected with the plasma spray heads and driving the plasma spray heads to translate in the mode of being perpendicular to the conveying mechanisms. The problems that according to an existing cleaning mode, residual dirt is cleaned manually, manual cleaning is not thorough, meanwhile, dust is likely to be contaminated in the carrying process, and secondary pollution is caused are solved.

Description

Technical Field

[0001] The present application relates to a workpiece cleaning device, in particular to a plasma cleaning device and a cleaning method. Background Art

[0002] In the field of processing, cleaning is often required after processing is completed to remove dirt generated by the equipment. Especially in the manufacturing and assembly of 3C equipment, the existing cleaning method relies on manpower to clean the remaining dirt, which is not thorough; at the same time, dust is easily contaminated during transportation, causing secondary pollution. Improvements are proposed. Summary of the invention

[0003] The invention discloses a plasma cleaning device, which solves the problem that the existing cleaning method relies on manpower to clean the residual dirt, the manual cleaning is not thorough, and the dust is easily contaminated during the transportation process, causing secondary pollution.

[0004] A plasma cleaning device comprises a loading station for loading workpieces, a unloading station for unloading workpieces, and a cleaning station provided with a plasma nozzle. The cleaning device comprises At least two conveying mechanisms, one end of the conveying mechanism corresponds to the loading station, the other end of the conveying mechanism corresponds to the unloading station, and the conveying mechanism passes through the cleaning station; and A gripping mechanism, the gripping mechanism is arranged on the conveying mechanism, and reciprocates between the loading station and the unloading station along with the conveying mechanism, and is used for gripping the workpiece; The cleaning station is provided with a movable bracket which can be translated. The movable bracket is arranged across each conveying mechanism and is used for connecting the plasma nozzle and driving the plasma nozzle to translate perpendicularly to each conveying mechanism.

[0005] In this application, a conveying mechanism is set up to cooperate with a grabbing mechanism to pick up materials from the loading station, clean the workpieces at the cleaning station, and finally move to the unloading station to unload the materials. The whole process adopts automated transportation to avoid the hidden dangers of inadequate cleaning and secondary pollution caused by manual handling and manual cleaning. At the same time, multiple conveying mechanisms are set up for transportation to improve cleaning efficiency.

[0006] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0007] Optionally, the gripping mechanism includes a suction cup assembly and a lifting device, and the lifting device drives the suction cup assembly to rise to form a material picking position that cooperates with the loading station and the unloading station to transfer the workpiece, and to descend to form a transfer position corresponding to the movement of the conveying mechanism.

[0008] Optionally, the gripping mechanism further includes a rotating device, wherein the rotating device is located below the suction cup assembly and drives the suction cup assembly to rotate in a horizontal direction, and the geometric center of the suction cup assembly is located on the rotation axis of the rotating device.

[0009] Optionally, the loading station is provided with positioning jigs corresponding to the number of the conveying mechanisms. The positioning jigs are located above the end of the conveying mechanism and cooperate with the material picking position of the gripping mechanism to be used for workpiece loading and positioning.

[0010] Optionally, the positioning fixture includes a positioning seat for supporting the workpiece and a first pushing module and a second pushing module on two adjacent sides of the positioning seat that are movable respectively, and the first pushing module and the second pushing module respectively push the workpiece in a first direction and a second direction that are perpendicular to each other to position it, so that the geometric center of the workpiece and the geometric center of the suction cup assembly are on the same vertical line.

[0011] Optionally, the positioning seat has a through-type channel for the grasping mechanism to pass from bottom to top, and the positioning seat is open to one side of the conveying mechanism for the grasping mechanism to translate through.

[0012] Optionally, the upper end surface of the positioning seat has a stepped structure for positioning the workpiece, including a supporting portion for supporting along the circumference of the lower end surface of the workpiece, and a first convex portion arranged opposite to the first pushing module and a second convex portion arranged opposite to the second pushing module, wherein the first convex portion and the second convex portion are used for the workpiece to abut against and determine the geometric center.

[0013] Optionally, the cleaning station is also provided with a lifting module that can move up and down, the lifting module is connected to the movable bracket for synchronous translation, and the plasma nozzle is connected to the lifting module for lifting and down movement.

[0014] Optionally, an angle adjustment module is provided to adjust the inclination angle between the plasma nozzle and the workpiece.

[0015] The application also discloses a cleaning method for cleaning a workpiece, which uses the above-mentioned cleaning device to clean the workpiece.

[0016] The beneficial effects of this application are as follows: 1. In this application, a liftable and optional gripping mechanism is provided to drive the workpiece located on the gripping mechanism to rotate, thereby increasing the contact area between the plasma nozzle and the workpiece, achieving rapid and relatively comprehensive cleaning, thereby improving cleaning efficiency and enhancing cleaning effect; 2. In the present application, a positioning fixture is provided so that the geometric center of the workpiece and the geometric center of the suction cup assembly are on the same vertical line, so that the workpiece can rotate around its own geometric center with the cooperation of the rotating device. Compared with eccentric rotation, the contact area between the workpiece and the plasma nozzle can be more sufficient, further improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application; Figure 2 A schematic diagram of a partial structure of an embodiment of the present application; Figure 3 A schematic diagram of a partial structure of an embodiment of the present application; Figure 4 A schematic diagram of a partial structure of an embodiment of the present application; Figure 5 A schematic diagram of a partial structure of an embodiment of the present application; Figure 6 It is a schematic diagram of a local structure of an embodiment of the present application.

[0018] The reference numerals in the figures are described as follows: 1. Conveying mechanism; 2. Grasping mechanism; 21. Suction cup assembly; 22. Lifting device; 23. Rotating device; 3. Movable bracket; 31. Lifting module; 32. Angle adjustment module; 4. Positioning fixture; 41. Positioning seat; 411. Channel; 412. Supporting part; 413. First convex part; 414. Second convex part; 42. First pushing module; 43. Second pushing module; 5. Loading station; 6. Unloading station; 7. Cleaning station; 8. Plasma nozzle; 9. Workpiece. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] refer to Figure 1 In one embodiment of the present application, a plasma cleaning device is disclosed, which has a loading station 5 corresponding to workpiece loading, a unloading station 6 corresponding to workpiece unloading, and a cleaning station 7 provided with a plasma nozzle.

[0023] The plasma cleaning device comprises one or more conveying mechanisms 1 for automatically conveying workpieces, one end of the conveying mechanism 1 is arranged corresponding to the loading station 5, and the other end is arranged corresponding to the unloading station 6, and can go back and forth between the loading station 5 and the unloading station 6. A gripping mechanism 2 is arranged on the conveying mechanism 1, and the gripping mechanism 2 is driven by the conveying mechanism 1 to go back and forth between the loading station 5 and the unloading station 6, and passes through the cleaning station 7, for gripping and fixing the workpiece.

[0024] The above-mentioned plasma cleaning equipment also includes a movable bracket 3 that can be moved horizontally. The movable bracket 3 is set corresponding to the cleaning station 7 and spans across each conveying mechanism 1. The plasma nozzle 8 is connected to the movable bracket 3 and moves vertically to each conveying mechanism 1, so as to clean the workpieces transported on each conveying mechanism 1.

[0025] refer to Figure 2 and Figure 3 In one embodiment, in order to cooperate with the loading station 5 and the unloading station 6 to pick up and place the workpiece, the gripping mechanism 2 includes a suction cup assembly 21 and a lifting device 22. The suction cup assembly 21 acts on the lower surface of the workpiece 9 and adsorbs the surface of the workpiece 9 through negative pressure. The lifting device 22 drives the suction cup assembly 21 to rise to form a material picking position for cooperating with the loading station 5 and the unloading station 6 to transfer the workpiece, and to descend to form a transfer position corresponding to the movement of the conveying mechanism 1.

[0026] Furthermore, in order to improve the cleaning efficiency, the gripping mechanism 2 also includes a rotating device 23, which is located below the suction cup assembly 21 and drives the suction cup assembly 21 to rotate in the horizontal direction, thereby replacing manual rotation of the workpiece and increasing the contact area of ​​the workpiece 9 under the plasma nozzle 8.

[0027] Furthermore, the geometric center of the suction cup assembly 21 is located on the rotation axis of the rotating device 23, so that the workpiece 9 rotates concentrically with the rotating device 23, and the workpiece 9 is fully exposed to the working area of ​​the nozzle of the plasma shower head 8.

[0028] refer to Figures 3 to 5 In one embodiment, the loading station 5 is provided with positioning fixtures 4 corresponding to the number of the conveying mechanism 1, which are used for positioning the workpiece when loading. The positioning fixture 4 is located above the end of the conveying mechanism 1 and matches the material picking position of the grabbing mechanism 2.

[0029] To complete the workpiece positioning, the positioning fixture 4 includes a positioning seat 41 for carrying the workpiece and a first pusher module 42 and a second pusher module 43 on both sides of the positioning seat. The first pusher module 42 and the second pusher module 43 both move in the horizontal direction to move the workpiece for positioning.

[0030] The first pusher module 42 has a first direction for pushing the workpiece, and the second pusher module 43 has a second direction perpendicular to the first direction. The workpiece is placed above the positioning seat 41, and is pushed synchronously by the first pusher module 42 and the second pusher module 43 until the geometric center of the workpiece and the geometric center of the suction cup assembly 21 are on the same vertical line. Then, the lifting device 22 drives the suction cup assembly 21 to rise to the material taking position to take the material.

[0031] In some embodiments, in order to enable the grasping mechanism 2 to remove the workpiece 9 from the positioning seat 41, the positioning seat 41 has a through channel 411 for the grasping mechanism 2 to pass from bottom to top, so that the grasping mechanism 2 can adsorb and fix the workpiece after passing through; and the positioning seat 41 is open to one side of the conveying mechanism 1, so that the grasping mechanism 2 can move horizontally through after being at the material picking position and adsorbing the workpiece.

[0032] Furthermore, the upper end surface of the positioning seat 41 has a stepped structure for positioning the workpiece, and the stepped structure includes: a supporting portion 412, a first convex portion 413, and a second convex portion 414. The supporting portion 412 is located at the inner edge of the channel 411 and extends inwardly to support the circumferential direction of the lower surface of the workpiece 9. The first pusher module 42 is located on one side of the positioning seat 41, and the second pusher module 43 is located on the other side of the positioning seat 41. The first convex portion 413 is arranged opposite to the first pusher module 42, and the second convex portion 414 is arranged opposite to the second pusher module 43, so that when the workpiece is pushed by an external force to contact the first convex portion 413 and the second convex portion 414, the geometric center can be quickly determined.

[0033] Furthermore, a buffer component 415 is provided at the edge of the stepped structure in contact with the workpiece. The buffer component 415 may be made of rubber material to protect the workpiece from damage.

[0034] In some embodiments, the unloading station 6 and the loading station 5 are arranged in a mirror image structure.

[0035] refer to Figure 6 In one embodiment, the cleaning station 7 is also provided with a lifting module 31 that can move up and down. The lifting module 31 is connected to the movable bracket 3 for synchronous translation. The plasma nozzle 8 is connected to the lifting module 31 for lifting and down movement, so as to adjust the distance between the plasma nozzle 8 and the workpiece and control the size of the contact surface between the plasma nozzle 8 and the workpiece when working.

[0036] Furthermore, the cleaning station 7 is also provided with an angle adjustment module 32 for adjusting the inclination angle between the nozzle of the plasma nozzle 8 and the workpiece, so that the workpiece can be fully exposed under the nozzle of the plasma nozzle 8 .

[0037] refer to Figure 1 In some embodiments, a robotic arm may be provided on one side of the plasma cleaning device of the present application to automatically load and unload materials at the loading station 5 and the unloading station 6 instead of manually.

[0038] The above-mentioned workpiece 9 usually includes fragile parts in the digital field, such as mobile phone screens, circuit boards, glass back covers, etc.

[0039] In one embodiment of the present application, a cleaning method is disclosed, including using the above-mentioned cleaning device to clean a workpiece, and the cleaning of the workpiece is specifically as follows: S1. Positioning the workpiece 9 through the loading station 5 so that the geometric center of the workpiece 9 and the geometric center of the suction cup assembly 21 are on the same vertical line; S2, the lifting device 22 drives the suction cup assembly 21 to move to the material picking position, adsorbs the workpiece 9, and continues to move upward until the workpiece 9 is upwardly separated from the positioning seat 41, and the grasping mechanism 2 is driven by the conveying mechanism 1 to leave the loading station 5 along the open side of the positioning seat 41; S3, the conveying mechanism 1 drives the grabbing mechanism 2 to move to the cleaning station 7, the plasma nozzle 8 is driven by the movable bracket 3 to the top of the workpiece 9, and is lowered to a suitable height by the lifting module 31 to clean the workpiece, and the rotating device 23 drives the workpiece 9 to rotate; S4. After cleaning is completed, the conveying mechanism 1 drives the gripping mechanism 2 to move to the unloading station 6 for unloading.

[0040] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned 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. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0041] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A plasma cleaning device, comprising a loading station for loading workpieces, a unloading station for unloading workpieces, and a cleaning station provided with a plasma nozzle, characterized in that: The cleaning device comprises at least two conveying mechanisms (1), one end of the conveying mechanism (1) corresponds to the loading station, the other end of the conveying mechanism (1) corresponds to the unloading station, and the conveying mechanism (1) passes through the cleaning station; and A gripping mechanism (2), the gripping mechanism (2) being arranged on the conveying mechanism (1) and reciprocating with the conveying mechanism (1) between the loading station and the unloading station, and being used for gripping workpieces; The cleaning station is provided with a movable support (3) which is movable horizontally. The movable support (3) is arranged across each conveying mechanism (1) and is used to connect the plasma nozzle (8) and drive the plasma nozzle (8) to move horizontally perpendicular to each conveying mechanism (1).

2. A plasma cleaning device according to claim 1, characterized in that: The gripping mechanism (2) comprises a suction cup assembly (21) and a lifting device (22); the lifting device (22) drives the suction cup assembly (21) to rise to form a material picking position for cooperating with the loading station and the unloading station to transfer workpieces, and to descend to form a transfer position corresponding to the movement of the conveying mechanism (1).

3. A plasma cleaning device according to claim 2, characterized in that: The gripping mechanism (2) further comprises a rotating device (23), wherein the rotating device (23) is located below the suction cup assembly (21) and drives the suction cup assembly (21) to rotate in a horizontal direction, and the geometric center of the suction cup assembly (21) is located on the rotation axis of the rotating device (23).

4. The plasma cleaning device according to claim 3, characterized in that: The loading station is provided with positioning jigs (4) corresponding in number to the conveying mechanism (1); the positioning jigs (4) are located above the end of the conveying mechanism (1) and cooperate with the material picking position of the gripping mechanism (2) to be used for workpiece loading and positioning.

5. The plasma cleaning device according to claim 4, characterized in that: The positioning fixture (4) comprises a positioning seat (41) for supporting the workpiece, and a first pushing module (42) and a second pushing module (43) on two adjacent sides of the positioning seat that are movable respectively, wherein the first pushing module (42) and the second pushing module (43) respectively push the workpiece in a first direction and a second direction perpendicular to each other for positioning, so that the geometric center of the workpiece and the geometric center of the suction cup assembly (21) are on the same vertical line.

6. The plasma cleaning device according to claim 5, characterized in that: The positioning seat (41) has a through-type channel (411) for the grasping mechanism (2) to pass through from bottom to top, and the positioning seat (41) is open to one side of the conveying mechanism (1) for the grasping mechanism (2) to move through in translation.

7. The plasma cleaning device according to claim 6, characterized in that: The upper end surface of the positioning seat (41) has a stepped structure for positioning the workpiece, including a supporting portion (412) for supporting along the circumference of the lower end surface of the workpiece, and a first convex portion (413) arranged opposite to the first pushing module (42), and a second convex portion (414) arranged opposite to the second pushing module (43), wherein the first convex portion (413) and the second convex portion (414) are used for the workpiece to abut against and determine the geometric center.

8. The plasma cleaning device according to claim 1, characterized in that: The cleaning station is also provided with a lifting module (31) capable of lifting movement; the lifting module (31) is connected to the movable bracket (3) for synchronous translation; and the plasma nozzle (8) is connected to the lifting module (31) for lifting movement.

9. The plasma cleaning device according to claim 8, characterized in that: It also has an angle adjustment module (32) for adjusting the inclination angle between the nozzle of the plasma spray head (8) and the workpiece.

10. A cleaning method for cleaning a workpiece, characterized in that: The workpiece is cleaned using the cleaning device described in any one of claims 1 to 9.

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