A weighing bottle switch cover device

Abstract

The weighing bottle opening and closing device provided by the application comprises a workbench, a bottle body fixing part, a bottle cap containing part, a bottle cap suction accessory and a driving mechanism, the workbench is provided with a containing groove for containing the weighing bottle; the bottle body fixing part is arranged on the workbench, and is used for fixing the bottle body of the weighing bottle to the containing groove; the bottle cap containing part is arranged on the workbench, and is used for containing the bottle cap of the weighing bottle; the bottle cap suction accessory is arranged above the workbench; the suction end of the bottle cap suction accessory is provided with an avoiding groove, and the avoiding groove is used for avoiding the handle structure on the bottle cap of the weighing bottle; the driving mechanism is fixed to the workbench, and is used for driving the bottle cap suction accessory to approach the bottle body fixing part to suction the bottle cap of the weighing bottle or to approach the bottle cap containing part to transport the bottle cap of the weighing bottle to the bottle cap containing part. Compared with the prior art, the weighing bottle opening and closing device provided by the application has stronger suction stability when suctioning the bottle cap of the weighing bottle and more accurate opening and closing operation.

Description

Technical Field

[0001] This application relates to the field of automation equipment technology, and in particular to a weighing bottle cap opening and closing device. Background Technology

[0002] Sample pretreatment is a crucial preliminary step in the analytical testing process, encompassing multiple core procedures such as sample collection, weighing, extraction, and purification. Therefore, sample pretreatment directly impacts the accuracy of the test results. Typically, physicochemical samples are contained in weighing bottles, requiring frequent opening and closing of the bottle caps during pretreatment to perform the relevant processing steps.

[0003] Currently, opening and closing weighing bottles in laboratories still largely relies on manual labor. Researchers must hold the bottle body with one hand and pinch the cap with the other to pull it off. To facilitate this, the cap usually has a raised handle at the top for gripping and applying force. However, the consistency of manual operation is difficult to guarantee, and when dealing with a large number of bottles, the operator is prone to fatigue and deformation, significantly reducing efficiency. Therefore, automated equipment for opening and closing weighing bottles has emerged. Most existing automated equipment uses a negative pressure mechanism to pick up the cap, clamps the bottle body, and then uses a cylinder to close it. However, the raised handle on the cap makes the suction effect unstable, leading to errors in the opening and closing operation.

[0004] Therefore, the above problems need to be addressed. Utility Model Content

[0005] The purpose of this application is to provide a weighing bottle cap opening and closing device, which has a more stable adsorption effect and a more stable and precise cap opening and closing operation.

[0006] To achieve the above objectives, the weighing bottle cap opening and closing device provided in this application includes a worktable, a bottle body fixing component, a cap receiving component, a cap suction component, and a driving mechanism. The worktable is provided with a receiving groove for receiving the weighing bottle; the bottle body fixing component is disposed on the worktable and is used to fix the bottle body of the weighing bottle to the receiving groove; the cap receiving component is disposed on the worktable and is used to receive the cap of the weighing bottle; the cap suction component is disposed above the worktable; the suction end of the cap suction component is provided with a clearance groove, which is used to avoid the handle structure on the cap of the weighing bottle; the driving mechanism is fixed to the worktable and is used to drive the cap suction component to approach the bottle body fixing component to suction the cap of the weighing bottle or to approach the cap receiving component to transport the cap of the weighing bottle onto the cap receiving component.

[0007] Compared with the prior art, the weighing bottle cap opening and closing device provided in this application avoids the handle structure on the bottle cap by setting a clearance groove at the adsorption end of the cap adsorption component. This allows the handle structure to be smoothly accommodated in the clearance groove when the adsorption end of the cap adsorption component approaches the bottle cap, thus enabling the adsorption end of the cap adsorption component to fully contact the bottle cap and resulting in stronger adsorption stability. The bottle body fixing component on the worktable can fix the bottle body in the accommodating groove. Compared with traditional clamping and fixing, this can effectively prevent the bottle body from shifting or shaking during the adsorption process of the cap adsorption component adsorbing the bottle cap. This ensures that the adsorption end of the cap adsorption component and the bottle cap will not be misaligned due to the movement of the bottle body during the cap closing process, further guaranteeing the stability of adsorption and the accuracy of opening and closing the cap.

[0008] Specifically, the bottle cap adsorption component includes a bottle cap suction cup, which is used to adsorb the bottle cap of the weighing bottle, and the clearance groove is located in the middle of the bottle cap suction cup.

[0009] Specifically, the bottle cap suction device further includes a buffer gasket, which is disposed inside the bottle cap suction cup and is used to make elastic contact with the bottle cap of the weighing bottle.

[0010] Specifically, the buffer washer has several elastic protrusions on its surface that contacts the cap of the weighing bottle. These elastic protrusions are used to absorb the impact force transmitted from the buffer washer to the cap of the weighing bottle.

[0011] Specifically, the clearance groove is conical or cylindrical in shape.

[0012] Specifically, the driving mechanism includes a lifting component and a moving component. The output end of the lifting component is connected to the bottle cap suction member to drive the bottle cap suction member to move up and down relative to the worktable. The output end of the moving component is connected to the lifting component to drive the bottle cap suction member to move from the bottle body fixing member to the bottle cap receiving member or from the bottle cap receiving member to the bottle body fixing member.

[0013] Specifically, the lifting assembly includes a lifting drive cylinder, a lifting slide rail, and a connecting slider. The extension direction of the lifting slide rail is perpendicular to the worktable. The connecting slider is slidably disposed on the lifting slide rail and is also connected to the bottle cap adsorption component. The output end of the lifting drive cylinder is connected to the connecting slider and is used to drive the connecting slider to lift and lower relative to the worktable along the lifting slide rail with the bottle cap adsorption component.

[0014] Specifically, the moving component includes a moving drive cylinder, a moving slide rail, and a connecting bracket. The moving drive cylinder is connected to the worktable via a mounting bracket. The moving slide rail is mounted on the mounting bracket, and the extending direction of the moving slide rail is parallel to the surface on the worktable used to support the bottle body fixing component. The connecting bracket is slidably mounted on the moving slide rail. The lifting component is mounted on the connecting bracket. The output end of the moving drive cylinder is connected to the connecting bracket to drive the connecting bracket to move along the moving slide rail.

[0015] Specifically, the bottle body fixing component includes a fixing suction cup, which is disposed at the bottom of the receiving groove and is subjected to external negative pressure. The fixing suction cup is used to adsorb the bottom of the weighing bottle body; and / or, the bottle cap receiving component includes a bottle cap receiving component body and a bottle cap receiving groove. The bottle cap receiving component body is detachably disposed on the workbench, and the bottle cap receiving groove is disposed on the upper surface of the bottle cap receiving component body. The shape of the bottle cap receiving groove is adapted to the bottle cap of the weighing bottle.

[0016] Specifically, the receiving groove includes several annular sinks, which are concentrically arranged, and the sinking depth of the several annular sinks gradually decreases in the direction from the geometric center of the receiving groove outward. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1This is an assembly diagram of the weighing bottle switch cap device in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of how the weighing bottle cap and body are magnetically fixed by the weighing bottle opening and closing device in an embodiment of this application.

[0020] Figure 3 for Figure 2 Top view;

[0021] Figure 4 for Figure 3 AA section view;

[0022] Figure 5 This is a schematic diagram of another embodiment of the cap adsorption component of the weighing bottle opening and closing device in this application.

[0023] Figure 6 This is a schematic diagram of the assembly of the buffer washer and elastic protrusion of the weighing bottle switch cap device in the embodiments of this application;

[0024] Figure 7 This is a schematic diagram of the assembly of the workbench and the cap receiving component of the weighing bottle opening and closing device in an embodiment of this application.

[0025] The attached figures are labeled as follows:

[0026] 100-Weighing bottle cap opening and closing device, 110-Workbench, 111-Accommodation groove, 1111-Annular settling groove, 120-Bottle body fixing component, 121-Fixing suction cup, 130-Bottle cap accommodating component, 131-Bottle cap accommodating component body, 132-Bottle cap accommodating groove, 140-Bottle cap suction component, 141-Allowing groove, 142-Bottle cap suction cup, 143-Buffer washer, 144-Positioning step, 145-Elastic protrusion, 150-Drive mechanism, 151-Lifting component, 1511-Lifting drive cylinder, 1512-Lifting slide rail, 1513-Connecting slider, 152-Moving component, 1521-Moving drive cylinder, 1522-Moving slide rail, 1523-Connecting bracket, 160-Mounting bracket, 200-Weighing bottle, 210-Bottle body, 220-Bottle cap, 230-Handle structure. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0028] 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. (if present), indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the embodiments of this application and for 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. Furthermore, the terms "first," "second," and "third" are used only for descriptive purposes such as distinguishing similar objects, and should not be construed as indicating or implying relative importance or order.

[0029] 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 detachable 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.

[0030] Please see Figures 1-4 The weighing bottle cap opening and closing device 100 provided in this application includes a workbench 110, a bottle body fixing member 120, a cap receiving member 130, a cap adsorption member 140, and a driving mechanism 150. The workbench 110 is provided with a receiving groove 111 for receiving the weighing bottle 200; the bottle body fixing member 120 is disposed on the workbench 110 and is used to fix the bottle body 210 of the weighing bottle 200 to the receiving groove 111; the cap receiving member 130 is disposed on the workbench 110 and is used to receive the weighing bottle 200. The weighing bottle 200 has a bottle cap 220; a bottle cap adsorption component 140 is disposed above the worktable 110; the adsorption end of the bottle cap adsorption component 140 is provided with a clearance groove 141, which is used to avoid the handle structure 230 on the bottle cap 220 of the weighing bottle 200; a drive mechanism 150 is fixed to the worktable 110, and the drive mechanism 150 is used to drive the bottle cap adsorption component 140 to approach the bottle body fixing component 120 to adsorb the bottle cap 220 of the weighing bottle 200 or to approach the bottle cap receiving component 130 to transport the bottle cap 220 of the weighing bottle 200 onto the bottle cap receiving component 130. Compared with the prior art, the existence of the clearance groove 141 allows the adsorption end of the bottle cap adsorption component 140 to fully contact the surface of the bottle cap 220 of the weighing bottle 200, thereby effectively enhancing the stability of adsorption and making the opening and closing operation of the cap more reliable and accurate.

[0031] Further, please refer to Figures 1-4The bottle cap suction component 140 includes a bottle cap suction cup 142, which is used to suction the bottle cap 220 of the weighing bottle 200. A clearance groove 141 is located in the middle of the bottle cap suction cup 142. Specifically, the bottle cap suction cup 142 has an opening in the middle and communicates with the clearance groove 141. The bottle cap suction cup 142 is entirely fitted onto the end of the bottle cap suction component 140 facing the worktable. The end of the bottle cap suction component 140 away from the worktable 110 has an external negative pressure interface, which communicates with the clearance groove 141. This interface removes air from the clearance groove 141 and the space between the bottle cap suction cup 142 and the bottle cap 220 of the weighing bottle 200 when the bottle cap suction cup 142 contacts the bottle cap 220, ensuring that the bottle cap suction cup 142 fully contacts and firmly adheres to the bottle cap 220 of the weighing bottle 200.

[0032] Further, please refer to Figure 4 The bottle cap suction member 140 also includes a buffer washer 143, which is disposed within the bottle cap suction cup 142 and is used for elastic contact with the bottle cap 220 of the weighing bottle 200. This arrangement allows the bottle cap suction member 140 to absorb some of the interaction force between the bottle body 210 and the bottle cap 220 when the bottle cap suction member 140 performs the cap-closing operation via the drive mechanism 150, thereby preventing damage to the bottle body 210 of the weighing bottle 220 due to impact from the bottle cap 220 during the cap-closing operation. In this embodiment, the buffer washer 143 is annular and made of silicone.

[0033] Please see Figure 5 To facilitate the installation of the buffer washer 143, the cap suction component 140 is also provided with a positioning step 144 for positioning the buffer washer 143. In order for the buffer washer 143 to effectively absorb the interaction force between the cap 220 and the body 210 of the weighing bottle 200, the thickness of the buffer washer 143 is greater than the height of the positioning step 144. In this way, the buffer washer 143 can extend out of the positioning step 144 to contact the cap 220 of the weighing bottle 200 and be compressed, thereby effectively absorbing the interaction force between the cap 220 and the body 210 during the cap-closing operation.

[0034] Further, please refer to Figures 4-6 The buffer washer 143 has several elastic protrusions 145 on its surface that contacts the cap 220 of the weighing bottle 200. These elastic protrusions 145 absorb the impact force transmitted from the buffer washer 143 to the cap 220 of the weighing bottle 200. To fully absorb the impact force transmitted from the buffer washer 143 to the cap 220 of the weighing bottle 200, the elastic protrusions 145 are arranged in a ring concentric with the buffer washer 143 and are evenly distributed radially along the buffer washer 143. It should be noted that the radius of the elastic protrusions 145 gradually increases from the geometric center of the buffer washer 143 outwards.

[0035] Further, please refer to Figure 4 In some embodiments of this application, the clearance groove 141 is cylindrical. This design allows for a larger space within the suction end of the cap suction member 140 to accommodate handle structures 230 of various shapes and sizes, thus making it suitable for various weighing bottles 200.

[0036] Further, please refer to Figure 5 In some other embodiments of this application, the clearance groove 141 is conical in shape. This design allows sufficient space to be provided within the suction end of the bottle cap suction member 140 to avoid the handle structure 230 while effectively reducing the volume of the internal cavity of the suction end of the bottle cap suction member 140, thereby enabling faster vacuuming.

[0037] Further, please refer to Figures 1-3 The drive mechanism 150 includes a lifting component 151 and a moving component 152. The output end of the lifting component 151 is connected to the bottle cap suction member 140 to drive the bottle cap suction member 140 to rise and fall relative to the worktable 110. The output end of the moving component 152 is connected to the lifting component 151 and is used to drive the bottle cap suction member 140 from the bottle body fixing member 120 to the bottle cap receiving member 130 or from the bottle cap receiving member 130 to the bottle body fixing member 120.

[0038] Further, please refer to Figures 1-4 The lifting assembly 151 includes a lifting drive cylinder 1511, a lifting slide rail 1512, and a connecting slider 1513. The lifting slide rail 1512 extends perpendicularly to the worktable 110. The connecting slider 1513 slides on the lifting slide rail 1512 and is also connected to the bottle cap suction member 140. The output end of the lifting drive cylinder 1511 is connected to the connecting slider 1513, which drives the connecting slider 1513 to lift and lower relative to the worktable 110 along the lifting slide rail 1512 with the bottle cap suction member 140. In this embodiment, the lifting drive cylinder 1511 can be an existing rodless cylinder, the working principle of which is well known to those skilled in the art and will not be described in detail here.

[0039] Further, please refer to Figures 1-4The moving component 152 includes a moving drive cylinder 1521, a moving slide rail 1522, and a connecting bracket 1523. The moving drive cylinder 1521 is connected to the worktable 110 via a mounting bracket 160. The moving slide rail 1522 is mounted on the mounting bracket 160, and the extending direction of the moving slide rail 1522 is parallel to the surface of the worktable 110 used to support the bottle body fixing component 120. The connecting bracket 1523 is slidably mounted on the moving slide rail 1522. The lifting component 151 is mounted on the connecting bracket 1523. The lifting drive cylinder 1511 and the lifting slide rail 1512 are both fixed to the connecting bracket 1523. The output end of the moving drive cylinder 1521 is connected to the connecting bracket 1523 to drive the connecting bracket 1523 to move along the moving slide rail 1522, so that the lifting component 151 and the bottle cap adsorption component 140 move together with the connecting bracket 1523. Similarly, the movable drive cylinder 1521 can also be an existing rodless cylinder, the working principle of which is well known to those skilled in the art and will not be described in detail here.

[0040] Further, please refer to Figures 1-4 Since the connecting bracket 1523 needs to support the lifting component 151 and the bottle cap adsorption component 140, in order to improve the reliability of the load-bearing, the mounting bracket 160 is provided with a pair of parallel sliding rails 1522, and the two sliding rails 1522 are respectively connected to the two sides of the connecting bracket 1523.

[0041] Further, please refer to Figures 1-4 The bottle body fixing component 120 includes a fixing suction cup 121, which is disposed at the bottom of the receiving groove 111 and is subjected to external negative pressure. The fixing suction cup 121 is used to adsorb the bottom of the bottle body 210 of the weighing bottle 200. This configuration can reliably fix the bottle body 210 of the weighing bottle 200 while avoiding excessive clamping force on the bottle body 210 of the weighing bottle 200, thereby effectively preventing damage to the bottle body 210 of the weighing bottle 200.

[0042] Further, please refer to Figures 1-2 In order to ensure that the fixed suction cup 121 can evenly adhere to the bottom of the weighing bottle 200 body 210, the fixed suction cup 121 is positioned at the center of the bottom of the receiving groove 111, so that the fixed suction cup 121 adheres to the center of the bottom of the bottle body 210 as much as possible to ensure even adsorption.

[0043] Further, please refer to Figures 1-2 as well as Figure 7The bottle cap receiving component 130 includes a bottle cap receiving component body 131 and a bottle cap receiving groove 132. The bottle cap receiving component body 132 is detachably mounted on the workbench 110, and the bottle cap receiving groove 132 is disposed on the upper surface of the bottle cap receiving component body 131, and the shape of the bottle cap receiving groove 132 is adapted to the bottle cap 220 of the weighing bottle 200. The detachable mounting of the bottle cap receiving component body 132 facilitates quick replacement when needed, thereby adapting to various sizes and specifications of bottle caps 220. Specifically, the size of the bottle cap receiving groove 132 can be set to the maximum size of the commonly used bottle cap 220 of the weighing bottle 200, thereby reducing the frequency of replacing the bottle cap receiving component 130.

[0044] Further, please refer to Figures 1-2 as well as Figure 7 To accommodate weighing bottles 200 of various sizes, the receiving groove 111 includes several annular sinks 1111. These annular sinks 1111 are concentrically arranged, and their depth gradually decreases from the geometric center outwards. In other words, the annular sink 1111 furthest from the geometric center of the receiving groove 111 has the largest radius. This creates a stepped receiving structure. The specific geometric dimensions of the annular sinks 1111 can be set according to the dimensions of the bottle body 210 of the commonly used weighing bottle 200.

[0045] Further, please refer to Figure 3 To simplify the mechanism, the direction of the line connecting the geometric center of the receiving groove 111 and the geometric center of the bottle cap receiving groove 132 is... Figure 3 The direction indicated by the dashed line M is parallel to the extension direction of the moving guide rail 1522, and the initial position of the adsorption end of the bottle cap adsorption member 140 is set to face the receiving groove 111 or the bottle cap receiving groove 132, that is, the dashed line M also passes through the geometric center of the adsorption end of the bottle cap adsorption member 140. In this way, the drive mechanism 150 does not need to set up a moving component to adjust the position of the bottle cap adsorption member 140, and can accurately move to face the receiving groove 111 or the bottle cap receiving groove 132.

[0046] The following is a description of the working principle of the weighing bottle opening and closing device 100 provided in this application.

[0047] When the weighing bottle 200 needs to be separated from the cap 220 and transferred, that is, when the cap opening and closing operations are required, the weighing bottle 200 is first positioned in the receiving groove 111 of the workbench 110, so that the bottle body 210 of the weighing bottle 200 is matched and positioned in an annular sink 1111. Then, negative pressure is applied to the fixing suction cup 121 of the bottle body fixing component 120, so that the fixing suction cup 121 adsorbs and fixes the bottom of the bottle body 220. Then, the lifting component 151 and the moving component 152 are activated, so that the cap suction cup 142 of the cap adsorption component 140 contacts and presses the cap 220 of the weighing bottle 200. Then, the cap suction cup is applied. When the negative pressure is applied to the attachment 140, the bottle cap 220 is stably adsorbed. Then, the lifting component 151 is activated to raise the bottle cap adsorption component 140 relative to the worktable 110, thereby separating the bottle cap 220 from the bottle body 210. Next, the moving component 152 is activated to move the bottle cap adsorption component 140 and the bottle cap 220 above the bottle cap receiving component 130. Then, the lifting component 151 is activated again to lower the bottle cap adsorption component 140. When the bottle cap 220 begins to contact the bottle cap receiving groove 132, the negative pressure on the bottle cap adsorption component 140 is disconnected, causing the bottle cap 220 to separate from the bottle cap suction cup 142. At this point, the opening and closing of the bottle cap is completed.

[0048] When it is necessary to press and fix the bottle cap 220 onto the bottle body 210, that is, when the cap closing operation is required, the weighing bottle 200 is first positioned in the receiving groove 111 of the workbench 110, so that the bottle body 210 of the weighing bottle 200 is matched and positioned with an annular sink 1111. Then, negative pressure is applied to the fixing suction cup 121 of the bottle body fixing component 120, so that the fixing suction cup 121 adsorbs and fixes the bottom of the bottle body 220. Then, the lifting component 151 and the moving component 152 are activated, so that the bottle cap suction cup 142 of the bottle cap adsorption component 140 and the bottle cap 210 of the weighing bottle 200 are pressed and fixed together. The cap 220 is then pressed and pressed against the bottle cap suction component 140, which applies negative pressure to stabilize the cap 220. The lifting component 151 is then activated to raise the cap 220 and the bottle cap suction component 140. The moving component 152 is then activated to move the cap 220 directly above the bottle body 210 to align with the bottle opening. The lifting component 151 is then activated again to lower the cap 210 until it is pressed into the bottle opening. At this point, the cap-closing operation is complete. All negative pressure can then be cut off and the drive mechanism 150 reset for subsequent operations.

[0049] Compared with the prior art, the weighing bottle cap opening and closing device 100 provided in this application avoids the handle structure 230 on the cap 220 of the weighing bottle 200 by setting an avoidance groove 141 at the adsorption end of the cap adsorption member 140. This allows the handle structure 230 to be smoothly accommodated in the avoidance groove 141 when the adsorption end of the cap adsorption member 140 approaches the cap 220 of the weighing bottle 200, thereby enabling the adsorption end of the cap adsorption member 140 to fully contact the cap 220 of the weighing bottle 200, resulting in stronger adsorption stability. Meanwhile, on the workbench 110... The bottle body fixing component 120 can fix the bottle body 210 of the weighing bottle 200 in the receiving groove 111. Compared with the traditional clamping and fixing, it can effectively prevent the bottle body 210 of the weighing bottle 200 from shifting or shaking during the adsorption process of the cap adsorption end of the cap adsorption component 140 adsorbing the cap of the weighing bottle 200. It ensures that the adsorption end of the cap adsorption component 140 and the cap of the weighing bottle 200 will not be misaligned due to the movement of the bottle body 210 of the weighing bottle 200 during the cap closing process, further ensuring the stability of adsorption and the accuracy of opening and closing the cap.

[0050] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A weighing bottle cap opening and closing device, characterized in that, include: A workbench, wherein the workbench is provided with a receiving groove for accommodating the weighing bottle; A bottle body fixing component is provided on the workbench and is used to fix the bottle body of the weighing bottle to the receiving groove. A bottle cap receiving component is disposed on the workbench and is used to receive the bottle cap of the weighing bottle; A bottle cap adsorption component is provided above the workbench; the adsorption end of the bottle cap adsorption component is provided with a clearance groove, which is used to avoid the handle structure on the bottle cap of the weighing bottle. A driving mechanism is fixed to the worktable. The driving mechanism is used to drive the cap suction member to approach the bottle body fixing member to suction the cap of the weighing bottle or to approach the cap receiving member to transport the cap of the weighing bottle onto the cap receiving member.

2. The weighing bottle opening and closing device according to claim 1, characterized in that, The bottle cap suction device includes a bottle cap suction cup, which is used to suction the bottle cap of the weighing bottle, and the clearance groove is located in the middle of the bottle cap suction cup.

3. The weighing bottle opening and closing device according to claim 2, characterized in that, The bottle cap suction device also includes a buffer gasket, which is disposed inside the bottle cap suction cup and is used to make elastic contact with the bottle cap of the weighing bottle.

4. The weighing bottle opening and closing device according to claim 3, characterized in that, The buffer washer has several elastic protrusions on its surface that contacts the cap of the weighing bottle. These elastic protrusions absorb the impact force transmitted from the buffer washer to the cap of the weighing bottle.

5. The weighing bottle opening and closing device according to claim 1, characterized in that, The clearance groove is conical or cylindrical in shape.

6. The weighing bottle opening and closing device according to claim 1, characterized in that, The driving mechanism includes a lifting component and a moving component. The output end of the lifting component is connected to the bottle cap suction member to drive the bottle cap suction member to move up and down relative to the worktable. The output end of the moving component is connected to the lifting component to drive the bottle cap suction member to move from the bottle body fixing member to the bottle cap receiving member or from the bottle cap receiving member to the bottle body fixing member.

7. The weighing bottle opening and closing device according to claim 6, characterized in that, The lifting assembly includes a lifting drive cylinder, a lifting slide rail, and a connecting slider. The lifting slide rail extends perpendicularly to the worktable. The connecting slider slides on the lifting slide rail and is also connected to the bottle cap suction component. The output end of the lifting drive cylinder is connected to the connecting slider to drive the connecting slider to lift the bottle cap suction component relative to the worktable along the lifting slide rail.

8. The weighing bottle opening and closing device according to claim 6, characterized in that, The moving component includes a moving drive cylinder, a moving slide rail, and a connecting bracket. The moving drive cylinder is connected to the worktable via a mounting bracket. The moving slide rail is mounted on the mounting bracket, and the extending direction of the moving slide rail is parallel to the surface on the worktable used to support the bottle body fixing component. The connecting bracket is slidably mounted on the moving slide rail. The lifting component is mounted on the connecting bracket. The output end of the moving drive cylinder is connected to the connecting bracket to drive the connecting bracket to move along the moving slide rail.

9. The weighing bottle opening and closing device according to claim 1, characterized in that, The bottle body fixing component includes a fixing suction cup, which is disposed at the bottom of the receiving groove and is subjected to negative pressure. The fixing suction cup is used to adsorb the bottom of the weighing bottle body; and / or, The bottle cap receiving component includes a bottle cap receiving component body and a bottle cap receiving groove. The bottle cap receiving component body is detachably disposed on the workbench, and the bottle cap receiving groove is disposed on the upper surface of the bottle cap receiving component body. The shape of the bottle cap receiving groove is adapted to the bottle cap of the weighing bottle.

10. The weighing bottle opening and closing device according to claim 1, characterized in that, The receiving groove includes several annular sinks, which are arranged concentrically, and the sinking depth of the several annular sinks gradually decreases in the direction from the geometric center of the receiving groove outward.

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