Liquid adding equipment

Abstract

The utility model belongs to the technical field of liquid adding, and discloses liquid adding equipment which comprises a loading carrier, a base and a driving assembly. The charging carrier comprises a charging barrel, a first discharging opening is formed in the bottom of the charging barrel, a valve is arranged at the first discharging opening, and a valve element of the valve has a normally-closed working state of blocking the first discharging opening; the base comprises a base body, a tray used for bearing the charging barrel and a first elastic piece, a hollow ejector pin is arranged on the base body, the ejector pin corresponds to the valve element and is used for pushing the valve element to open the first discharging port, a second discharging port is formed in the first end of the ejector pin, a feeding port is formed in the second end of the ejector pin, and the tray is in sliding connection with the ejector pin. The first elastic piece is configured to always have a trend of pushing the tray away from the seat body; the output end of the driving assembly can press the charging barrel downwards. According to the liquid adding equipment, the liquid leakage risk is low, the feeding precision is improved, the modification effect of the negative electrode active material is further improved, and the feeding reliability is good.

Description

Technical Field

[0001] This utility model relates to the field of liquid addition technology, and in particular to a liquid addition device. Background Technology

[0002] Graphite, silicon-carbon, and silicon-oxygen anode active materials are widely used in lithium-ion batteries. With the development of the new energy and digital electronics industries, higher requirements are being placed on lithium-ion batteries, such as longer battery life, higher rate capability, and lower temperature resistance. Modifying anode active materials is an important aspect of improving the performance of lithium-ion batteries.

[0003] In the modification process of negative electrode active materials, solid-liquid mixing is usually required (e.g., coating, slurry preparation, doping, etc.). To improve the feeding efficiency of liquid materials, some solutions use automatic feeding devices. These devices typically include a storage cylinder for storing the liquid material, a feeding pipe connected to the storage cylinder, and a solenoid valve for controlling the opening and closing of the feeding pipe. The solenoid valve can be remotely controlled to open when feeding is needed. However, the assembly of the solenoid valve and the feeding pipe is complex, with a high risk of leakage, resulting in liquid material waste and affecting feeding accuracy. Furthermore, if the solenoid valve is damaged, feeding will be impossible, impacting production efficiency.

[0004] Therefore, there is an urgent need to develop a liquid addition device to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides a liquid addition device that can automatically add liquid materials with a low risk of leakage, improves the accuracy of addition, and thus helps to improve the modification effect of negative electrode active materials. In addition, the addition reliability is good, which helps to improve the modification efficiency of negative electrode active materials.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Liquid addition equipment, including:

[0008] A loading carrier includes a loading cylinder, the bottom of which is provided with a first discharge port, and a valve is provided at the first discharge port. The valve core of the valve has a normally closed working state to block the first discharge port.

[0009] The base includes a seat body, a tray for supporting the loading cylinder, and a first elastic element. The seat body is provided with a hollow ejector pin. The first end of the ejector pin is provided with a second discharge port, and the second end of the ejector pin is provided with a feed port. The ejector pin is correspondingly arranged with the valve core and is used to push the valve core to open the first discharge port so that the first discharge port is connected to the feed port. The tray is slidably connected with the ejector pin. The first elastic element is configured to always have a tendency to push the tray away from the seat body.

[0010] A drive component, the output of which can press down the loading cylinder.

[0011] Optionally, the tray is provided with a first groove, the inner peripheral wall of the first groove is provided with a plurality of first protrusions, the outer peripheral wall of the loading cylinder is provided with a plurality of first slots, the first slots and the first protrusions are provided in a one-to-one correspondence, the bottom of the loading cylinder is installed in the first groove, and the first protrusions are engaged with the first slots.

[0012] And / or, the seat body is provided with a movable cavity, the first elastic element is disposed in the movable cavity, the outer peripheral wall of the tray is attached to the inner peripheral wall of the movable cavity, and an annular baffle is provided at the opening of the movable cavity, and the tray can abut against the annular baffle under the action of the first elastic element.

[0013] Optionally, the tray has a through hole in the middle, and a sleeve with one end communicating with the through hole is provided on the tray, and the sleeve is slidably sleeved on the outside of the ejector pin.

[0014] Optionally, the feed inlet is located on the peripheral wall of the end of the ejector pin away from the seat, and a first sealing element is provided between the sleeve and the ejector pin.

[0015] Optionally, the tray is provided with a second seal surrounding the ejector pin, the second seal being able to conform to the loading cylinder.

[0016] Optionally, the valve further includes a valve body and a second elastic element. The inlet of the valve body is connected to the interior of the loading cylinder, and the outlet of the valve body is connected to the first discharge port. The valve core is slidably disposed in the valve body, and the second elastic element is disposed in the valve body. The second elastic element is configured to always have the tendency to push the valve core to block the outlet of the valve body, thereby causing the valve core to block the first discharge port.

[0017] Optionally, the liquid adding device further includes a main frame connected to the base and a fixing plate disposed on the top of the main frame, and the drive assembly is disposed on the fixing plate;

[0018] The main frame, the fixing plate, and the base form an installation space with an installation port on the side, and the loading carrier is loaded into the installation space through the installation port.

[0019] Optionally, the loading carrier further includes a piston cover, which is slidably fitted against the inner peripheral wall of the loading cylinder;

[0020] The drive assembly includes a drive member and a pressure plate. The output end of the drive member is connected to the pressure plate. The drive member can drive the pressure plate to extend and contact the piston cover, and push the piston cover to move towards the bottom of the loading cylinder. It can also drive the pressure plate to retract away from the piston cover.

[0021] Optionally, the piston cover is provided with a second groove adapted to the pressure plate, the inner peripheral wall of the second groove is provided with a plurality of second protrusions, the outer peripheral wall of the pressure plate is provided with a plurality of second slots, the second slots and the second protrusions are provided in a one-to-one correspondence, the pressure plate can be placed in the second groove under the drive of the driving member, and the second protrusions and the second slots are engaged.

[0022] And / or, the piston cover is provided with a relief groove, and a connecting rod is provided at the opening of the relief groove, the connecting rod being used to pull the piston cover.

[0023] Optionally, the second discharge port is connected to one end of the discharge pipe, and the other end of the discharge pipe is provided with a nozzle.

[0024] The beneficial effects of this utility model are:

[0025] This invention provides a liquid addition device, including a loading carrier, a base, and a drive assembly. When no feeding is required, the output end of the drive assembly is moved away from the loading cylinder or just in contact with the loading carrier, ensuring that the drive assembly does not apply pressure to the loading cylinder. At this time, the valve core is separated from or just in contact with the ejector pin, meaning the ejector pin exerts no thrust on the valve core, and the valve core remains normally closed. The first outlet of the loading cylinder is blocked by the valve core. When feeding is required, the output end of the drive assembly presses down on the loading cylinder, causing the loading cylinder to move the tray closer to the base while the ejector pin passes through the first outlet, pushing the valve core to open the first outlet. This allows the liquid to flow out from the first outlet and enter the ejector pin through the inlet on the ejector pin, finally exiting from the second outlet on the ejector pin for addition. This liquid addition device achieves automatic feeding through pressurization by the drive assembly, which is easy to control. If the drive assembly is damaged, feeding can also be achieved manually by pressing, resulting in good feeding reliability and improving the modification efficiency of the negative electrode active material.

[0026] Furthermore, assembly is simple: just place the loading cylinder on the tray, aligning the valve core with the ejector pin. This simplifies assembly and facilitates the handling of the loading cylinder. The loading carrier can also be flexibly replaced with different liquids as needed, offering high flexibility and improving modification efficiency. Simultaneously, multiple loading carriers can share a single base and drive assembly, simplifying the component structure and reducing parts costs.

[0027] Integrating the valve into the filling cylinder improves the structural compactness of the liquid addition device and reduces the risk of leakage due to pipeline connections. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0029] Figure 1 This is a cross-sectional view of the loading carrier provided in this embodiment of the utility model;

[0030] Figure 2 This is a schematic diagram of the valve provided in an embodiment of the present utility model;

[0031] Figure 3 This is a cross-sectional view of the base provided in an embodiment of the present utility model;

[0032] Figure 4 yes Figure 3 A magnified view of a portion of the image;

[0033] Figure 5 This is a schematic diagram showing the assembly of the loading carrier, base, and drive assembly provided in this embodiment of the utility model;

[0034] Figure 6 This is a schematic diagram showing the cooperation of the main frame, base, and drive assembly provided in this embodiment of the utility model;

[0035] Figure 7 This is a schematic diagram of the pressure plate provided in an embodiment of this utility model.

[0036] In the picture:

[0037] 100. Loading carrier; 110. Loading cylinder; 111. First slot; 112. Handle; 120. Valve; 121. Valve core; 122. Valve body; 123. Second elastic element; 130. Piston cover; 131. Second groove; 132. Second protrusion; 133. Clearance groove; 134. Connecting rod; 135. Plug;

[0038] 200, Base; 210, Seat body; 201, Base plate; 202, Tray frame; 203, Movable cavity; 211, Ejector pin; 2111, Second discharge port; 2112, Feed port; 220, Tray; 221, First groove; 222, First locking protrusion; 223, Sleeve; 230, First elastic element; 240, First sealing element; 250, Second sealing element; 260, Annular baffle;

[0039] 300. Drive assembly; 310. Drive component; 311. Through-type stepper motor; 312. Lead screw; 320. Pressure plate; 321. Second slot;

[0040] 400. Main frame; 410. Installation space;

[0041] 500. Fixing plate;

[0042] 600, discharge pipe; 610, nozzle. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0044] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0047] This embodiment provides a liquid addition device that can automatically add liquid materials with a low risk of leakage, improves the addition accuracy, and thus helps to improve the modification effect of negative electrode active materials. In addition, the addition reliability is good, which helps to improve the modification efficiency of negative electrode active materials.

[0048] Specifically, such as Figures 1-5 As shown, the liquid addition device includes a loading carrier 100, a base 200, and a drive assembly 300.

[0049] The loading carrier 100 includes a loading cylinder 110, with a first discharge port at the bottom. A valve 120 is installed at the first discharge port, and the valve core 121 of the valve 120 has a normally closed working state that blocks the first discharge port. It is understood that when the valve core 121 is not driven, it will remain in a normally closed working state blocking the first discharge port, and at this time, the liquid material in the loading cylinder 110 will not flow out. When the valve core 121 is driven to open the first discharge port, the liquid material in the loading cylinder 110 can be discharged from the first discharge port under the action of gravity.

[0050] The base 200 includes a seat 210, a tray 220 for supporting the loading cylinder 110, and a first elastic element 230. The seat 210 has a hollow ejector pin 211. The first end of the ejector pin 211 has a second discharge port 2111, and the second end has a feed port 2112. The ejector pin 211 is correspondingly positioned with the valve core 121 and is used to push the valve core 121 to open the first discharge port, so that the first discharge port and the feed port 2112 are connected. The tray 220 is slidably connected to the ejector pin 211, and the first elastic element 230 is configured to always have a tendency to push the tray 220 away from the seat 210.

[0051] The output of the drive component 300 can press down the loading cylinder 110.

[0052] The liquid addition device has a non-feeding state and a feeding state.

[0053] When the liquid adding device is in a non-feeding state, the output end of the drive component 300 is away from or just in contact with the loading cylinder 110, and the tray 220 approaches the end of the ejector pin 211 under the action of the first elastic member 230. At this time, the ejector pin 211 is separated from or just in contact with the valve core 121.

[0054] When the liquid adding device is in the feeding state, the output end of the drive component 300 presses down the loading cylinder 110, and the ejector pin 211 pushes the valve core 121 to open the first discharge port. The liquid material in the loading cylinder 110 flows sequentially through the first discharge port, the inlet port 2112, the inside of the ejector pin 211, and the second discharge port 2111 for feeding.

[0055] The method of using this liquid addition device is as follows:

[0056] The liquid material to be added is injected into the loading cylinder 110 of the loading carrier 100;

[0057] The loading carrier 100 is installed on the base 200. After the loading carrier 100 is installed, the output end of the control drive component 300 is moved away from the loading cylinder 110 or just in contact with the loading cylinder 110, so that the drive component 300 does not apply pressure to the loading cylinder 110. At this time, the tray 220 only bears the weight applied to it by the loading cylinder 110. At this time, under the action of the first elastic element 230, the tray 220 approaches the end of the ejector pin 211, so that the ejector pin 211 separates from the valve core 121 or just contacts the valve core 121. That is, the ejector pin 211 does not apply a pushing force to the valve core 121, so that the valve core 121 remains in the normally closed working state of blocking the first outlet, and the liquid material in the loading cylinder 110 will not flow out.

[0058] When feeding is required, the output end of the control drive component 300 presses down the feeding cylinder 110. After the feeding cylinder 110 is pressed down, it will drive the tray 220 to move closer to the seat 210. The movement of the tray 220 closer to the seat 210 will cause the ejector pin 211 to protrude from the tray 220, thereby causing the ejector pin 211 to push the valve core 121 to open the first discharge port. At this time, the liquid material can enter the ejector pin 211 through the feed port 2112 on the ejector pin 211, and finally be discharged from the second discharge port 2111 for feeding.

[0059] The drive assembly 300 and the base 200 together form a valve opening mechanism to open the valve 120 and dispensing the liquid material. Furthermore, automatic dispensing can be achieved simply by controlling the drive assembly 300 to pressurize the filling cylinder 110, facilitating control. Additionally, if the drive assembly 300 is damaged, dispensing can be achieved manually by pressing it, avoiding production downtime due to maintenance. This ensures high reliability of dispensing and helps improve the modification efficiency of the negative electrode active material.

[0060] This liquid addition device can be assembled simply by placing the filling cylinder 110 on the tray 220 and aligning the valve core 121 with the ejector pin 211. Assembly is simple and facilitates the placement and removal of the filling cylinder 110. The device also allows for flexible replacement of the filling carrier 100 containing different liquids, offering high flexibility and improving modification efficiency. Furthermore, multiple filling carriers 100 can share a single base 200 and drive assembly 300, simplifying the component structure and reducing component costs. Integrating the valve 120 into the filling cylinder 110 improves the compactness of the liquid addition device and reduces the risk of leakage due to pipeline connections.

[0061] It is understandable that, since the bottom of the filling cylinder 110 is in close contact with the tray 220 and the filling cylinder 110 applies a certain pressure to the tray 220, the liquid material flowing out from the first outlet will hardly leak between the filling cylinder 110 and the tray 220, and the sealing performance is good.

[0062] Of course, in order to reduce the risk of liquid leakage, the outer diameter of the ejector pin 211 can be designed to match the inner diameter of the first outlet, so that when the ejector pin 211 pushes the valve core 121 to open the first outlet, the outer peripheral wall of the ejector pin 211 is tightly attached to the inner peripheral wall of the first outlet, so that the liquid material flowing out from the first outlet can only enter the ejector pin 211 through the feed inlet 2112 on the ejector pin 211.

[0063] Optionally, see [link to relevant documentation] Figure 2 Valve 120 also includes a valve body 122 and a second elastic element 123. The inlet of valve body 122 communicates with the interior of the loading cylinder 110, and the outlet of valve body 122 communicates with the first discharge port. Valve core 121 is slidably disposed within valve body 122, and the second elastic element 123 is disposed within valve body 122. The second elastic element 123 is configured to always have a tendency to push valve core 121 to block the outlet of valve body 122, thereby causing valve core 121 to block the first discharge port. With this configuration, valve core 121 can maintain the blockage of valve body 122 outlet when not pushed by ejector pin 211.

[0064] Optionally, see [link to relevant documentation] Figure 3 The tray 220 has a first groove 221, and the inner peripheral wall of the first groove 221 has multiple first protrusions 222. The outer peripheral wall of the loading cylinder 110 has multiple first slots 111, and the first slots 111 correspond one-to-one with the first protrusions 222. The bottom of the loading cylinder 110 is installed in the first groove 221, and the first protrusions 222 engage with the first slots 111. The loading cylinder 110 is fixed by the cooperation of the first groove 221, the first protrusions 222, and the first slots 111. The structure is simple, the loading cylinder 110 is easy to install and remove, and the effect of fixing the loading cylinder 110 is better.

[0065] Optionally, see [link to relevant documentation] Figure 3 and Figure 4 The tray 220 has a through hole in the middle, and a sleeve 223 with one end communicating with the through hole is provided on the tray 220. The sleeve 223 is slidably sleeved on the outside of the ejector pin 211. That is, the tray 220 is slidably connected to the ejector pin 211 through the sleeve 223. This arrangement improves the reliability of the slidable connection between the tray 220 and the ejector pin 211.

[0066] Optionally, see [link to relevant documentation] Figure 3 and Figure 4In one possible embodiment, the feed inlet 2112 is located on the peripheral wall of the end of the ejector pin 211 away from the seat 210, and a first seal 240 is provided between the sleeve 223 and the ejector pin 211. By providing the first seal 240, leakage of liquid from the sleeve 223 and the ejector pin 211 can be prevented, thereby improving the sealing performance of the liquid addition device.

[0067] Understandably, the first seal 240 is optional, but not limited to, a sealing ring.

[0068] Optionally, in order to improve the sealing performance between the sleeve 223 and the ejector pin 211, multiple first sealing elements 240 can be provided along the axial direction of the sleeve 223, such as two or three, as needed.

[0069] Optionally, see [link to relevant documentation] Figure 2 In this embodiment, the inlet of the valve body 122 is located on the side wall of the valve body 122. When the ejector pin 211 pushes the valve core 121 to the position of opening the first discharge port and the outlet of the valve body 122, the inlet of the valve body 122 is sealed and connected with the feed port 2112.

[0070] Further, see also Figure 3 The tray 220 is provided with a second seal 250 surrounding the ejector pin 211, and the second seal 250 can fit into the filling cylinder 110. By providing the second seal 250, the sealing performance between the tray 220 and the filling cylinder 110 can be improved, reducing the risk of liquid leakage.

[0071] Further, see also Figure 3 The seat 210 has a movable cavity 203, and a first elastic element 230 is disposed within the movable cavity 203. The outer peripheral wall of the tray 220 is fitted against the inner peripheral wall of the movable cavity 203. An annular baffle 260 is provided at the opening of the movable cavity 203, allowing the tray 220 to abut against the annular baffle 260 under the action of the first elastic element 230. This arrangement serves several purposes: firstly, the movable cavity 203 can fix the tray 220, improving the stability of the tray 220 installation; secondly, the movable cavity 203 can guide the movement of the tray 220, improving the stability of the tray 220's movement; and thirdly, the annular baffle 260 can limit the movement of the tray 220.

[0072] Optionally, see [link to relevant documentation] Figure 3 In one possible embodiment, the seat 210 includes a base plate 201 and a tray frame 202, the tray frame 202 surrounding the outer edge of the base plate 201, and the tray frame 202 and the base plate 201 forming a movable cavity 203.

[0073] Furthermore, such as Figure 5 and Figure 6As shown, the liquid adding device also includes a main frame 400 connected to the base 200 and a fixing plate 500 disposed on the top of the main frame 400. The drive assembly 300 is disposed on the fixing plate 500. The main frame 400, the fixing plate 500, and the base 200 form an installation space 410 with an installation port on the side. The loading carrier 100 is installed into the installation space 410 through the installation port. Fixing the loading carrier 100 through the installation space 410 improves the stability of the loading carrier 100 assembly. The drive assembly 300 is fixed by the fixing plate 500, resulting in a simple and compact structure.

[0074] Optionally, in one possible embodiment, the loading cylinder 110 has a cylindrical structure, and the main frame 400 includes an arc-shaped plate that surrounds the outer periphery of the loading cylinder 110 and can cover half of the outer periphery area of ​​the loading cylinder 110.

[0075] Alternatively, in one possible embodiment, the pallet rack 202 and the curved plate are an integral structure.

[0076] Optionally, see [link to relevant documentation] Figure 5 and Figure 6 In one possible embodiment, the second outlet 2111 is connected to one end of the outlet pipe 600, and the other end of the outlet pipe 600 is provided with a nozzle 610. That is, the liquid flowing out of the second outlet 2111 enters the outlet pipe 600 and is then fed through the nozzle 610. Feeding through the outlet pipe 600 and the nozzle 610 results in a simple structure and facilitates the connection between the liquid adding device and the equipment that needs to be fed.

[0077] Further, see also Figure 1 and Figure 6 The loading carrier 100 also includes a piston cover 130, which slides against the inner peripheral wall of the loading cylinder 110. The drive assembly 300 includes a drive member 310 and a pressure plate 320. The output end of the drive member 310 is connected to the pressure plate 320. The drive member 310 can drive the pressure plate 320 to extend and contact the piston cover 130, and push the piston cover 130 towards the bottom of the loading cylinder 110. It can also drive the pressure plate 320 to retract away from the piston cover 130. Understandably, pressing down the piston cover 130 opens the first outlet and squeezes the liquid material contained in the loading cylinder 110 to discharge the liquid. When it is necessary to refill the loading cylinder 110 with liquid material, the piston cover 130 needs to be pulled up to the top position of the loading cylinder 110.

[0078] Specifically, when feeding is required, the control drive unit 310 drives the pressure plate 320 to extend and contact the piston cover 130, pushing the piston cover 130 to move the required stroke towards the bottom of the feeding cylinder 110. Through the cooperation of the drive unit 310, the pressure plate 320, and the piston cover 130, the feeding speed can be controlled, which is beneficial to improving the modification effect of the negative electrode active material. Furthermore, the feeding amount can be controlled by controlling the stroke of the piston cover 130, improving the accuracy of the feeding amount.

[0079] The drive assembly 300 has a simple structure and is easy to control. Furthermore, by applying pressure to the piston cover 130 through the pressure plate 320, the piston cover 130 is subjected to relatively uniform force, which helps to improve the smoothness of the piston cover 130's movement.

[0080] It is worth noting that after all the liquid material in the filling cylinder 110 has been added, the control drive 310 drives the pressure plate 320 to retract away from the piston cover 130 in order to avoid the filling carrier 100, so that the filling carrier 100 can be successfully removed from the base 200.

[0081] Optionally, see [link to relevant documentation] Figure 6 In one possible embodiment, the drive component 310 includes a through-type stepper motor 311 and a lead screw 312. The lead screw 312 is connected to the through-type stepper motor 311, and its end is connected to the pressure plate 320. This drive component 310 exhibits high movement precision, which is beneficial for improving the feeding accuracy of the liquid addition device. Since the mating structure of the through-type stepper motor 311 and the lead screw 312 is existing technology, its specific structure will not be described in detail.

[0082] It is understood that the lead screw 312 and the pressure plate 320 can be connected by welding, by snap-fit, or by other means, depending on actual needs. This application does not make any specific limitations.

[0083] Of course, in other possible embodiments, the driving component 310 can also be a cylinder, hydraulic cylinder or other mechanism capable of outputting linear motion, which can be set according to actual needs, and this application does not make specific limitations.

[0084] Furthermore, such as Figure 1 , Figure 6 and Figure 7 As shown, the piston cover 130 is provided with a second groove 131 that is adapted to the pressure plate 320. The inner peripheral wall of the second groove 131 is provided with a plurality of second protrusions 132, and the outer peripheral wall of the pressure plate 320 is provided with a plurality of second slots 321. The second slots 321 and the second protrusions 132 are arranged in a one-to-one correspondence.

[0085] To facilitate the installation of the loading carrier 100, the pressure plate 320 is generally raised to a clearance position, which ensures a certain distance between the pressure plate 320 and the piston cover 130 after the loading carrier 100 is installed. Therefore, after the loading carrier 100 is installed, the drive unit 310 needs to be controlled to drive the pressure plate 320 closer to the piston cover 130, so that the pressure plate 320 enters the second groove 131, and at the same time, the second locking protrusion 132 on the second groove 131 engages with the second locking slot 321 on the pressure plate 320. After that, the drive unit 310 is stopped, completing the preparation work for feeding.

[0086] By cooperating with the second groove 131 and the second protrusion 132 on the piston cover 130, the pressure plate 320 and the second slot 321 on the pressure plate 320 can improve the connection strength between the pressure plate 320 and the piston cover 130, thereby improving the synchronization of the movement between the pressure plate 320 and the piston cover 130 during feeding, and further improving the accuracy of feeding.

[0087] Optionally, see [link to relevant documentation] Figure 7 In this embodiment, the pressure plate 320 is circular; therefore, the second groove 131 is a circular groove. In another possible embodiment, the pressure plate 320 may also be square; in this case, the second groove 131 should be a square groove. In other possible embodiments, the shape of the pressure plate 320 may also be set to other shapes, depending on actual needs. The shape of the second groove 131 should be the same as the shape of the pressure plate 320.

[0088] Optionally, see [link to relevant documentation] Figure 1 In one possible embodiment, the piston cover 130 is provided with a liquid injection port, and a removable plug 135 is provided at the liquid injection port. The plug 135 can be removed to add liquid material into the filling cylinder 110 through the liquid injection port, and the plug 135 can be installed after the liquid material is added.

[0089] Optionally, see [link to relevant documentation] Figure 3 In one possible embodiment, the piston cover 130 is provided with a clearance groove 133, and a connecting rod 134 is provided at the opening of the clearance groove 133. The connecting rod 134 is used to pull the piston cover 130. That is, the clearance groove 133 and the connecting rod 134 form a "handle" structure for picking up and putting down the piston cover 130. When the liquid material in the filling cylinder 110 is finished, the piston cover 130 moves to the bottom of the filling cylinder 110. In order to add liquid to the filling cylinder 110 again, the operator can lift the piston cover 130 to the top of the filling cylinder 110 by holding the connecting rod 134 or pinching the connecting rod 134 with two fingers.

[0090] The "handle" structure formed by the clearance groove 133 and the connecting rod 134 does not protrude from the upper surface of the piston cover 130, thus avoiding obstruction to the operation of the drive assembly 300. Furthermore, the clearance groove 133 also helps to reduce the weight of the piston cover 130 to some extent.

[0091] Optionally, multiple clearance slots 133 can be provided on the piston cover 130, and each clearance slot 133 corresponds to a connecting rod 134. This allows the piston cover 130 to be lifted simultaneously by two hands, or allows multiple workers to lift the piston cover 130 at the same time.

[0092] Optionally, see [link to relevant documentation] Figure 1 and Figure 6 A handle 112 is provided on the outer peripheral wall of the loading cylinder 110. Workers can use the handle 112 to move the loading carrier 100.

[0093] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Liquid adding apparatus, characterized in that, include: The loading carrier (100) includes a loading cylinder (110), the bottom of which is provided with a first discharge port, and a valve (120) is provided at the first discharge port. The valve core (121) of the valve (120) has a normally closed working state to block the first discharge port. The base (200) includes a seat (210), a tray (220) for supporting the loading cylinder (110), and a first elastic element (230). The seat (210) is provided with a hollow ejector pin (211). The first end of the ejector pin (211) is provided with a second discharge port (2111), and the second end of the ejector pin (2111) is provided with a feed port (2112). The ejector pin (211) is correspondingly arranged with the valve core (121) and is used to push the valve core (121) to open the first discharge port so that the first discharge port communicates with the feed port (2112). The tray (220) is slidably connected to the ejector pin (211). The first elastic element (230) is configured to always have a tendency to push the tray (220) away from the seat (210). A drive assembly (300) whose output end is capable of pressing down the loading cylinder (110).

2. The liquid adding apparatus according to claim 1, wherein The tray (220) is provided with a first groove (221), and the inner peripheral wall of the first groove (221) is provided with a plurality of first latching protrusions (222). The outer peripheral wall of the loading cylinder (110) is provided with a plurality of first latching slots (111). The first latching slots (111) and the first latching protrusions (222) are arranged in a one-to-one correspondence. The bottom of the loading cylinder (110) is installed in the first groove (221), and the first latching protrusions (222) are engaged with the first latching slots (111). And / or, the seat (210) is provided with a movable cavity (203), the first elastic element (230) is disposed in the movable cavity (203), the outer peripheral wall of the tray (220) is attached to the inner peripheral wall of the movable cavity (203), the opening of the movable cavity (203) is provided with an annular baffle (260), and the tray (220) can abut against the annular baffle (260) under the action of the first elastic element (230).

3. The liquid addition device according to claim 1, characterized in that, The tray (220) has a through hole in the middle, and a sleeve (223) with one end communicating with the through hole is provided on the tray (220). The sleeve (223) is slidably sleeved on the outside of the ejector pin (211).

4. The liquid addition device according to claim 3, characterized in that, The feed inlet (2112) is located on the peripheral wall of the end of the ejector pin (211) away from the seat (210), and a first sealing element (240) is provided between the sleeve (223) and the ejector pin (211).

5. The liquid addition device according to claim 1, characterized in that, The tray (220) is provided with a second sealing element (250) surrounding the ejector pin (211), and the second sealing element (250) can fit into the loading cylinder (110).

6. The liquid addition device according to claim 1, characterized in that, The valve (120) further includes a valve body (122) and a second elastic element (123). The inlet of the valve body (122) is connected to the interior of the loading cylinder (110), and the outlet of the valve body (122) is connected to the first discharge port. The valve core (121) is slidably disposed in the valve body (122), and the second elastic element (123) is disposed in the valve body (122). The second elastic element (123) is configured to always have the tendency to push the valve core (121) to block the outlet of the valve body (122), thereby causing the valve core (121) to block the first discharge port.

7. The liquid addition device according to any one of claims 1-6, characterized in that, The liquid addition device also includes a main frame (400) connected to the base (200) and a fixing plate (500) disposed on the top of the main frame (400), and the drive assembly (300) is disposed on the fixing plate (500); The main frame (400), the fixing plate (500) and the base (200) form an installation space (410) with an installation port on the side, and the loading carrier (100) is loaded into the installation space (410) through the installation port.

8. The liquid adding apparatus according to any one of claims 1 to 6, characterized by The loading carrier (100) also includes a piston cover (130), which slides against the inner peripheral wall of the loading cylinder (110); The drive assembly (300) includes a drive member (310) and a pressure plate (320). The output end of the drive member (310) is connected to the pressure plate (320). The drive member (310) can drive the pressure plate (320) to extend and contact the piston cover (130) and push the piston cover (130) to move towards the bottom of the loading cylinder (110). It can also drive the pressure plate (320) to retract away from the piston cover (130).

9. The liquid addition device according to claim 8, characterized in that, The piston cover (130) is provided with a second groove (131) adapted to the pressure plate (320). The inner peripheral wall of the second groove (131) is provided with a plurality of second locking protrusions (132). The outer peripheral wall of the pressure plate (320) is provided with a plurality of second locking slots (321). The second locking slots (321) and the second locking protrusions (132) are arranged in a one-to-one correspondence. The pressure plate (320) can be placed in the second groove (131) under the drive of the drive member (310), and the second locking protrusions (132) are engaged with the second locking slots (321). And / or, the piston cover (130) is provided with a relief groove (133), and a connecting rod (134) is provided at the opening of the relief groove (133), the connecting rod (134) being used to pull the piston cover (130).

10. The liquid adding apparatus according to any one of claims 1 to 6, characterized by The second discharge port (2111) is connected to one end of the discharge pipe (600), and the other end of the discharge pipe (600) is provided with a nozzle (610).

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