Retractable and expandable liquid medicine tank wiping tool

Abstract

The utility model discloses a retractable and expandable liquid medicine tank wiping tool, which relates to the technical field of semiconductor processing, and comprises a main body structure, at least two scraping plates, a sliding part and a driving assembly, the sliding piece is slidably installed on the body structure in the first direction. The at least two scraping plates are distributed around the circumference of the sliding part and are respectively hinged or glidingly connected with the main body structure; the side edge of the free end, capable of extending out of the main body structure, of the scraper is a scraping blade. A first connecting rod is arranged between the scraping plate and the sliding piece; the two ends of the first connecting rod are hinged to the sliding piece and the scraper correspondingly. The driving assembly is connected with the sliding piece and used for driving the sliding piece to move so that the scraping plates can contract or expand. According to the design, the problem that stubborn residues are difficult to thoroughly remove through traditional spraying flushing can be solved, and the cleaning efficiency and effect are improved.

Description

Technical Field

[0001] This application relates to the field of semiconductor processing technology, and in particular to a retractable and expandable liquid tank wiping tool. Background Technology

[0002] In wet etching processes, the application of automated equipment significantly improves the efficiency and consistency of wafer processing. A typical automated wet etching machine uses a robot to pick up wafers or baskets and immerse them in a tank containing etching solution for cleaning and etching. However, the residue of etching solution becomes a key factor affecting process quality. Currently, Chinese patent application CN118053795A proposes a research-oriented fully automated wet etching system. This system uses a sprayer to rinse the used etching solution tank and supplements it with a drying step to remove residues. While this method can meet basic cleaning requirements to some extent, its cleaning effect is often insufficient for residues that are firmly attached to the inner wall of the tank. These incompletely removed residues may adversely affect the accuracy and product quality of subsequent etching processes.

[0003] Therefore, developing a more efficient cleaning tool or method to address the shortcomings of existing technologies has become a pressing technical problem in the field of wet etching. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a retractable and expandable cleaning tool for cleaning the walls of a medicine tank.

[0005] To achieve the above-mentioned technical objectives, this application provides a retractable and expandable wiping tool, including a main structure, at least two scrapers, a slider, and a drive assembly;

[0006] The sliding member is slidably mounted on the main structure along the first direction;

[0007] At least two of the scrapers are distributed around the circumference of the slider and are respectively hinged or slidably connected to the main structure;

[0008] The free end side of the scraper that extends beyond the main structure is a scraping blade;

[0009] A first connecting rod is provided between the scraper and the sliding member;

[0010] The two ends of the first connecting rod are respectively hinged to the sliding member and the scraper;

[0011] The drive assembly is connected to the slider and is used to drive the slider to cause the scrapers to contract or expand.

[0012] Furthermore, the drive assembly includes a drive element and a linkage group;

[0013] The driving component is slidably mounted on the main body structure along a second direction perpendicular to the first direction;

[0014] The linkage assembly is connected between the driving member and the sliding member, and is used to convert the motion of the driving member in the second direction into the motion of the sliding member in the first direction.

[0015] Furthermore, the linkage assembly includes a second link, a third link, and a fourth link;

[0016] One end of the second connecting rod is hinged to the sliding member, and the other end is hinged to one end of the third connecting rod;

[0017] The other end of the third link is hinged to the main structure;

[0018] One end of the fourth link is hinged to the third link, and the other end is hinged to the drive component.

[0019] Furthermore, there are two drive components, which are arranged symmetrically.

[0020] Furthermore, the two drive members can contact each other to limit the expansion angle of the scraper, or the main structure is provided with a stop portion that can contact and abut against the drive members to limit the expansion angle of the scraper.

[0021] Furthermore, the main structure is connected to a gripping block;

[0022] The gripping block has a groove on its side for the drive component to be movably inserted and slidably connected to the drive component.

[0023] Furthermore, the drive member is configured to extend into the groove and, when moving, drive the slider to move in the direction of expanding the scraper via the linkage assembly.

[0024] Furthermore, the main structure includes a base plate and fixed columns;

[0025] The fixed column is vertically connected to the top surface of the base plate;

[0026] The scraper is hinged or slidably connected to the base plate;

[0027] The sliding member is slidably connected to the fixed column.

[0028] Furthermore, the sliding element is a sliding sleeve, which is fitted onto the outside of the fixed column.

[0029] Furthermore, the top surface of the base plate has a raised edge around its perimeter;

[0030] The protruding edge and the top surface of the base plate form a receiving cavity;

[0031] The hinge between the scraper and the base plate is located in the receiving cavity.

[0032] Furthermore, the first link is an elastic telescopic rod.

[0033] Furthermore, there are four scrapers, arranged symmetrically in pairs.

[0034] As can be seen from the above technical solutions, the retractable and expandable wiping tool designed in this application has the following beneficial effects:

[0035] 1. The sliding component, drive assembly, and first linkage work together to achieve the retractable or expandable movement of the scraper. When the wiping tool is inserted into the tank to be cleaned, the retractable movement allows the wiping tool to smoothly enter the tank. Then, the drive assembly can cause the scraper to expand, so that the scraper blade is in close contact with the inner wall of the tank. When the wiping tool is pulled out of the tank, the scraper blade simultaneously scrapes away the stubborn residue on the inner wall of the tank. This solves the problem that traditional spray rinsing is difficult to completely remove stubborn residue, thus improving cleaning efficiency and effect.

[0036] 2. The retractable and expandable design of the scraper allows it to be flexibly adjusted to fit the internal shape and size of the tank. This adaptability ensures that the wiping tool can be used in different sizes of liquid tanks without the need for additional custom-made cleaning tools, thus improving the tool's versatility and economy.

[0037] 3. Improved cleaning results directly enhance the consistency of wet etching processes. By eliminating the interference of residues on the inner wall of the etching tank on the purity of the etching solution and the etching environment, the yield of wafer processing is improved, and the stability of product quality is ensured. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A perspective view of a retractable and expandable liquid tank wiping tool provided in this application;

[0040] Figure 2 This is a front view of a retractable and expandable liquid tank wiping tool provided in this application;

[0041] Figure 3A side view of a retractable and expandable liquid tank wiping tool provided in this application;

[0042] Figure 4 for Figure 3 AA section view in the middle;

[0043] In the diagram: 1. Main structure; 11. Base plate; 111. Protruding edge; 12. Fixed column; 2. Scraper; 21. Scraper blade; 3. Sliding component; 4. First connecting rod; 5. Drive assembly; 51. Drive component; 52. Link group; 521. Second connecting rod; 522. Third connecting rod; 523. Fourth connecting rod; 6. Grip block; 61. Slide groove. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0045] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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 the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0047] This application discloses a shrinkable and expandable medicine tank wiping tool.

[0048] Please see Figure 1 One embodiment of a retractable and expandable liquid tank wiping tool provided in this application includes:

[0049] The main structure consists of 1, at least two scrapers 2, a sliding component 3, and a drive assembly 5.

[0050] The sliding member 3 is slidably installed on the main structure 1 along the first direction; at least two scrapers 2 are distributed around the circumference of the sliding member 3 and are respectively hinged or slidably connected to the main structure 1; the scrapers 2 can be designed as corresponding straight plate structures or arc plate structures according to the shape of the inner wall of the tank, without restriction.

[0051] The scraper 2 is preferably hinged to the main structure 1. Compared with the sliding connection design, the hinge design makes the scraper 2 tilt at a certain angle. When the wiping tool is put into the tank, the scraper 2 can naturally retract during the contact with the edge of the tank opening, so as to smoothly enter the tank.

[0052] Alternatively, an elastic element can be added. This elastic element connects the scraper 2 to the main structure 1 or the sliding element 3 to the main structure 1, providing an elastic force for the scraper 2's contraction movement. This ensures the scraper 2 is initially in a contracted state, allowing it to be smoothly inserted into the tank. After insertion, the drive assembly 5 drives the scraper 2 to overcome the elastic force of the elastic element and achieve expansion. In this design, the sliding connection scraper 2 is superior to the hinged design. The sliding connection scraper 2 can be horizontally positioned, resulting in a lower scraping height compared to the hinged design, thus allowing it to better scrape the lower edge of the tank's inner wall.

[0053] The above two methods can be modified by those skilled in the art according to actual needs, without limitation. The attached drawings provided in this application are the design scheme of the hinged scraper 2.

[0054] The free end side of the scraper 2 that can extend out of the main structure 1 is the scraper blade 21 (taking the scraper 2 and the main structure 1 as hinged as an example, the free end side can refer to the side of the scraper 2 away from the hinge position (hinged with the main structure 1); taking the scraper 2 and the main structure 2 as sliding connection as an example, the side forming the scraper blade 21 can refer to the side of the scraper 2 that can extend out of the main structure 1 along its own sliding direction). A first connecting rod 4 is provided between the scraper 2 and the sliding member 3, and the two ends of the first connecting rod 4 are respectively hinged to the sliding member 3 and the scraper 2.

[0055] The drive assembly 5 is connected to the slider 3 and is used to drive the slider 3 to move so that the scrapers 2 can contract or expand. The contraction movement refers to the movement when the scraper blades 21 of the scrapers 2 move closer to each other, while the expansion movement refers to the movement when the scraper blades 21 of the scrapers 2 move further apart.

[0056] The retractable and expandable wiping tool designed in this application has the following beneficial effects:

[0057] 1. The sliding component 3, the driving component 5, and the first connecting rod 4 work together to achieve the retractable or expandable movement between the scraper 2. The retractable movement allows the wiping tool to smoothly enter the tank. Then, the driving component 5 can cause the scraper 2 to expand, so that the scraper blade 21 of the scraper 2 is in close contact with the inner wall of the tank. When the wiping tool is driven out of the tank, the scraper blade 21 simultaneously scrapes away the stubborn residue on the inner wall of the tank, which solves the problem that traditional spray rinsing is difficult to completely remove stubborn residue, and improves cleaning efficiency and effect.

[0058] 2. The retractable and expandable design of scraper 2 allows it to be flexibly adjusted according to the internal shape and size of the tank. This adaptability ensures that the wiping tool can be used in different sizes of liquid tanks without the need for additional customized cleaning tools, thus improving the tool's versatility and economy.

[0059] 3. Improved cleaning results directly enhance the consistency of wet etching processes. By eliminating the interference of residues on the inner wall of the etching tank on the purity of the etching solution and the etching environment, the yield of wafer processing is improved, and the stability of product quality is ensured.

[0060] The above is Embodiment 1 of a retractable and expandable medicine tank wiping tool provided in this application. The following is Embodiment 2 of a retractable and expandable medicine tank wiping tool provided in this application. Please refer to the following for details. Figures 1 to 4 .

[0061] Based on the solution of Embodiment 1 above:

[0062] Furthermore, such as Figure 1 As shown, the drive assembly 5 includes a drive member 51 and a linkage group 52; the drive member 51 is slidably mounted on the main body structure 1 along a second direction perpendicular to the first direction; the linkage group 52 is connected between the drive member 51 and the slider 3, and is used to convert the movement of the drive member 51 in the second direction into the movement of the slider 3 in the first direction.

[0063] By sliding the drive component 51 in the second direction, the motion of the drive component 51 is cleverly converted into the motion of the slider 3 in the first direction using the linkage assembly 52. ​​This motion conversion method makes the operation of the entire wiping tool more flexible and convenient. When it is necessary to make the scraper 2 retract or expand, it can be easily achieved by simply pushing the drive component 51 to slide in the second direction. This design makes it better suited for use with a robotic arm. The robotic arm can grasp the drive component 51 and press it to make the drive slide in the second direction, thereby expanding the scraper 2. When it is necessary to retract, the robotic arm grasps the main structure 1 outside the drive component 51. When the wiping tool is inserted into the groove, the scraper 2 retracts naturally by contacting the edge of the groove with the scraper 2. After insertion, the robotic arm can then grasp the drive component 51 and make the scraper 2 expand, thereby driving the wiping tool out of the groove and thus driving the scraper 2 to scrape the inner wall of the groove.

[0064] Furthermore, the cooperation between the drive component 51 and the linkage assembly 52, through this linkage mechanism design, makes the wiping tool more stable during movement. When the scraper 2 retracts or expands, the tight connection between the various components effectively reduces wobbling and displacement, ensuring that the scraper blade 21 always maintains good contact with the inner wall of the groove, thereby improving the effect of removing stubborn residues.

[0065] Furthermore, such as Figure 1 as well as Figure 4 As shown, the linkage 52 design includes a second linkage 521, a third linkage 522, and a fourth linkage 523. One end of the second linkage 521 is hinged to the sliding member 3, and the other end is hinged to one end of the third linkage 522. The other end of the third linkage 522 is hinged to the main structure 1. One end of the fourth linkage 523 is hinged to the third linkage 522 near its other end, and the other end is hinged to the drive member 51. The drive member 51 can be a rod structure. To facilitate driving, a column structure is integrally formed on it, and one end face of the main structure 1 forms a driving surface to facilitate gripping and driving by the robotic arm.

[0066] The design of the aforementioned linkage 52 allows the movement of the drive member 51 in the second direction to be precisely and efficiently converted into the movement of the slider 3 in the first direction. When the drive member 51 slides in the second direction, the fourth link 523 swings with the movement of the drive member 51, thereby causing the third link 522, which is hinged to it, to rotate around the hinge point with the main structure 1. The rotation of the third link 522 then causes the second link 521, which is hinged to it, to move, ultimately causing the slider 3, which is hinged to the other end of the second link 521, to slide in the first direction, thereby realizing the contraction or expansion of the scraper 2.

[0067] Furthermore, such as Figure 4 As shown, there are two drive components 5, which are arranged symmetrically.

[0068] The two symmetrically arranged drive components 5 make the wiping tool more balanced and stable during movement. When the scraper 2 contracts or expands, the symmetrical drive components 5 can simultaneously and evenly apply force to the slider 3, ensuring smooth movement of the slider 3. The symmetrical drive component 5 design also enhances the reliability and durability of the wiping tool. When one drive component 5 experiences a minor failure or wear, the other drive component 5 can still maintain the normal operation of the wiping tool to a certain extent, reducing the risk of the entire tool becoming unusable due to the failure of a single drive component 5. At the same time, this symmetrical structure also facilitates the maintenance and replacement of the drive components 5, reducing maintenance costs and difficulty. In practical applications, the symmetrically arranged drive components 5 can also better adapt to the operation of a robotic arm. The robotic arm can more easily control both drive components 5 simultaneously, achieving precise control of the expansion movement of the scraper 2. In essence, the two grippers of the robotic arm can respectively abut against the drive component 51, and during the gripping movement, they can drive the two drive components 51 to move closer to each other, thereby achieving control of the expansion movement of the scraper 2.

[0069] Furthermore, the two drive members 51 can contact each other to limit the expansion angle of the scraper 2, or the main structure 1 is provided with a stop portion that can contact and abut against the drive member 51 to limit the expansion angle of the scraper 2.

[0070] The expansion angle limiting mechanism is of great significance. When the two driving components 51 come into contact with each other, this contact forms a physical boundary that can precisely control the maximum expansion degree of the scraper 2. This can prevent the scraper 2 from expanding excessively, resulting in excessive contact pressure between the scraper blade 21 and the inner wall of the tank, thus preventing damage to the scraper blade 21 or unnecessary scratches to the inner wall of the tank. The stop part provided on the main structure 1 also plays a similar role. When the driving component 51 abuts against the stop part, it can also effectively limit the expansion angle of the scraper 2.

[0071] This angle-limiting mechanism also improves the safety and stability of the wiping tool. In actual use, if the scraper 2 expands without restriction, it may cause significant shaking during movement, affecting the removal of residue and potentially causing the wiping tool to detach from the tank. By limiting the expansion angle, the scraper 2 can be ensured to move within a reasonable range, allowing the scraper blade 21 to maintain stable and appropriate contact with the inner wall of the tank, thereby improving the efficiency and quality of removing stubborn residue.

[0072] Furthermore, if Figure 1 as well as Figure 2As shown, the main structure 1 is connected to a gripping block 6; the side of the gripping block 6 is provided with a groove 61 for the drive component 51 to be movably inserted and slidably connected to the drive component 51. The gripping block 6 not only facilitates the sliding installation of the drive component 51, but also facilitates the gripping of the robot arm. The gripping block 6 can be a rectangular block. Taking two drive components 5 symmetrically arranged as an example, the two opposite sides of the gripping block 6 are respectively provided with grooves 61 for the drive component 51 to be slidably inserted.

[0073] When the wiping tool needs to be placed into the tank, the robotic arm first grasps the two sides of the gripping part that do not have the sliding groove 61, and then places the wiping tool into the tank. During the process of the wiping tool entering the tank, the scraper 2 contacts the edge of the tank opening and retracts naturally. After the wiping tool is placed into the tank, the robotic arm switches to grasping the two drive members 51. By applying a clamping force, the two drive members 51 slide closer to each other, thereby driving the sliding member 3 to slide downwards, so as to drive the scraper 2 to expand through the first connecting rod 4. This causes the scraper blade 21 to stick to the inner wall of the tank under a certain force. At this time, the wiping tool is pushed out of the tank, and the scraper blade 21 can be driven to scrape the inner wall of the tank.

[0074] Furthermore, such as Figure 1 as well as Figure 4 As shown, when the drive member 51 is configured to extend into the groove 61, it drives the slider 3 to move towards the expanding scraper 2 via the linkage group 52. In this application, the first direction can refer to the Z-axis direction, and the second direction can refer to the X-axis direction. When the drive member 51 moves towards extending into the groove 61, it drives the fourth linkage 523 to move, which in turn drives the third linkage 522 to move. The movement of the third linkage 522 drives the second linkage 521 to move, which in turn drives the slider 3 to slide downward. The sliding slider 3 then drives the scraper 2 to expand via the first linkage 4. The purpose of this design is to better cooperate with the robot arm. That is, the robot arm grasps the two drive members 51, and during the clamping movement, it simultaneously drives the two drive members 51 to extend into the groove 61, which in turn drives the scraper 2 to expand. The expansion movement is achieved by clamping, which not only meets the expansion movement control requirements, but also allows the wiping tool to be pulled out of the groove as a whole by grasping the drive members 51, thus achieving scraping.

[0075] Of course, it can also be configured to drive the scraper 2 to expand when it exits the slide 61. At this time, the drive component 51 can be provided with insertion holes distributed perpendicular to the first direction for the gripper of the robot to insert. By controlling the opening and closing movement of the two grippers, the drive component 51 is driven to exit the slide 61, thereby realizing the expansion movement control of the scraper 2. Moreover, since the gripper is inserted into the insertion hole, it can be fixedly connected and cooperated with the drive component 51 in the Z-axis direction, so that the wiping tool can be smoothly driven out of the groove to achieve scraping.

[0076] Furthermore, such as Figure 2 as well as Figure 3 As shown, the main structure 1 includes a base plate 11 and a fixed column 12; the fixed column 12 is vertically connected to the top surface of the base plate 11; the scraper 2 is hinged or slidably connected to the base plate 11; and the sliding member 3 is slidably connected to the fixed column 12.

[0077] The fixed column 12 provides a stable guide for the sliding member 3, ensuring that the sliding member 3 can slide smoothly along the first direction (Z-axis direction), thereby driving the scraper 2 to perform accurate contraction and expansion movements. Taking the hinge as an example, the hinge design between the scraper 2 and the base plate 11 allows the scraper 2 to flexibly change its angle during movement, better adapting to the shape of the inner wall of the tank. In addition, this design of the main structure 1 is simple and easy to manufacture and install.

[0078] Furthermore, such as Figures 1 to 4 As shown, the sliding component 3 is a sliding sleeve, which is fitted onto the outside of the fixed column 12. This sliding sleeve design effectively reduces wobbling and offset during the sliding process, ensuring the stability and accuracy of the sliding component 3's movement. This makes the scraper 2 more precise during its contraction and expansion movements, allowing the scraper blade 21 to better conform to the inner wall of the groove, thus improving the removal of stubborn residues. Moreover, the sliding sleeve has a relatively simple structure, making it easy to manufacture and install, reducing production costs and assembly difficulty.

[0079] Furthermore, such as Figure 1 as well as Figure 2 As shown, the top surface of the base plate 11 has a raised edge 111 around its perimeter, and the raised edge 111 and the top surface of the base plate 11 form a receiving cavity. The hinge between the scraper 2 and the base plate 11 is located in the receiving cavity.

[0080] The receiving cavity can be used to collect scraped residue. When the scraper 2 scrapes the inner wall of the tank, the scraped-off stubborn residue will slide down the scraper 2 into the receiving cavity, preventing the residue from adhering to the inner wall of the tank again, thus further improving the cleaning effect. In addition, the raised edge 111 can also enhance the structural strength of the base plate 11. During the use of the wiping tool, it may be subjected to certain external forces. The presence of the raised edge 111 can disperse these external forces, preventing the base plate 11 from deforming or being damaged, thereby extending the service life of the wiping tool.

[0081] In terms of manufacturing, the protruding edge 111 and the base plate 11 can be integrally molded, which can ensure the integrity and stability of the structure, reduce assembly steps in the manufacturing process, and improve production efficiency. At the same time, the integral molding design also helps to reduce production costs.

[0082] Furthermore, the first link 4 is an elastic telescopic rod.

[0083] The flexible telescopic rod design can buffer the impact force generated during the movement of scraper 2 to a certain extent. When scraper 2 contacts the inner wall of the tank, it may encounter some hard and stubborn residues, at which point scraper 2 will be subjected to a large reaction force. The flexible telescopic rod can absorb some of the impact force, reduce damage to other components, and improve the durability and reliability of the entire wiping tool. In addition, the flexible telescopic rod can also compensate for dimensional errors that may exist during manufacturing and assembly. In actual production, the dimensions of various components may have certain deviations. The elasticity of the flexible telescopic rod can fine-tune these errors, allowing scraper 2 to more accurately conform to the inner wall of the tank during its contraction and expansion movements, further improving the effect of scraping away stubborn residues.

[0084] By employing an elastic telescopic rod as the first link 4, the performance and reliability of the retractable and expandable wiping tool designed in this application are further improved, enabling it to better meet various cleaning needs in practical applications.

[0085] Furthermore, such as Figure 1 As shown, taking a rectangular trough as an example, it has four inner wall surfaces, and the corresponding scraper 2 can be designed as four, and arranged symmetrically in pairs.

[0086] The above provides a detailed description of a retractable and expandable liquid tank wiping tool provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A retractable and expandable medicine tank wiping tool, characterized in that, It includes a main structure (1), at least two scrapers (2), a sliding component (3), and a drive assembly (5); The sliding member (3) is slidably mounted on the main body structure (1) along the first direction. At least two of the scrapers (2) are distributed around the circumference of the slider (3) and are respectively hinged or slidably connected to the main structure (1); The free end side of the scraper (2) that can extend out of the main structure (1) is a scraper blade (21). A first connecting rod (4) is provided between the scraper (2) and the sliding member (3); The two ends of the first connecting rod (4) are respectively hinged to the sliding member (3) and the scraper (2); The drive assembly (5) is connected to the slider (3) and is used to drive the slider (3) to move so that the scrapers (2) contract or expand.

2. The retractable and expandable medicine tank wiping tool according to claim 1, characterized in that, The drive assembly (5) includes a drive element (51) and a linkage group (52); The driving component (51) is slidably mounted on the main body structure (1) along a second direction perpendicular to the first direction. The linkage (52) is connected between the drive member (51) and the slider (3) to convert the motion of the drive member (51) in the second direction into the motion of the slider (3) in the first direction.

3. The retractable and expandable medicine tank wiping tool according to claim 2, characterized in that, The linkage group (52) includes a second link (521), a third link (522), and a fourth link (523); One end of the second link (521) is hinged to the sliding member (3), and the other end is hinged to one end of the third link (522); The other end of the third link (522) is hinged to the main structure (1); One end of the fourth link (523) is hinged to the third link (522), and the other end is hinged to the drive member (51).

4. The retractable and expandable medicine tank wiping tool according to claim 3, characterized in that, There are two drive components (5), and they are arranged symmetrically.

5. The retractable and expandable medicine tank wiping tool according to claim 4, characterized in that, The two drive members (51) can contact each other to limit the expansion angle of the scraper (2), or the main structure (1) is provided with a stop portion that can contact and abut against the drive members (51) to limit the expansion angle of the scraper (2).

6. The retractable and expandable medicine tank wiping tool according to claim 2, characterized in that, The main structure (1) is connected to a gripping block (6); The gripping block (6) has a groove (61) on its side for the drive member (51) to be movably inserted and slidably connected to the drive member (51).

7. The retractable and expandable medicine tank wiping tool according to claim 6, characterized in that, The drive member (51) is configured to extend into the groove (61) and, when moving, drive the slider (3) to move in the direction of expanding the scraper (2) via the linkage group (52).

8. The retractable and expandable medicine tank wiping tool according to claim 1, characterized in that, The main structure (1) includes a base plate (11) and a fixed column (12); The fixed column (12) is vertically connected to the top surface of the base plate (11); The scraper (2) is hinged or slidably connected to the base plate (11); The sliding member (3) is slidably connected to the fixed column (12).

9. A retractable and expandable medicine tank wiping tool according to claim 8, characterized in that, The sliding member (3) is a sliding sleeve, which is fitted outside the fixed column (12).

10. A retractable and expandable medicine tank wiping tool according to claim 8, characterized in that, The bottom plate (11) has a raised edge (111) around the top surface. The protruding edge (111) and the top surface of the base plate (11) form a receiving cavity; The hinge between the scraper (2) and the base plate (11) is located in the receiving cavity.

11. The retractable and expandable medicine tank wiping tool according to claim 1, characterized in that, The first link (4) is an elastic telescopic rod.

12. The retractable and expandable medicine tank wiping tool according to claim 1, characterized in that, There are four scrapers (2), and they are arranged symmetrically in pairs.

Images