Injection type liquid adding equipment

Abstract

The utility model belongs to the technical field of liquid adding, and discloses injection type liquid adding equipment. The injection type liquid adding equipment comprises a loading frame, a loading carrier and a driving assembly. Wherein the loading carrier is detachably mounted on the loading frame, the loading carrier comprises a loading cylinder and a piston cover, a first discharge port capable of being opened and closed is formed in the bottom of the loading cylinder, and the piston cover is attached to the inner circumferential wall of the loading cylinder in a sliding mode; the driving assembly is arranged on the loading frame, the output end of the driving assembly can make contact with the piston cover, and the driving assembly drives the piston cover to move in the direction close to the bottom of the loading cylinder so that the material liquid in the loading cylinder can be pressed out of the first discharging opening. According to the injection type liquid adding equipment, the accuracy of the liquid adding amount can be improved, the liquid adding speed can be controlled, and the modification effect and efficiency of a negative electrode material can be improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid addition technology, and in particular to an injection-type 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.). Currently, in small and medium batch modification, liquid materials are generally added manually. Manual addition is prone to uncontrollable addition speed, ultimately negatively impacting the efficiency and effectiveness of the modification work.

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

[0005] This invention provides an injection-type liquid addition device that can improve the accuracy of liquid addition and control the speed of liquid addition, which is beneficial to improving the modification effect and efficiency of negative electrode materials.

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

[0007] Injection-type liquid dispensing devices, including:

[0008] Loading rack;

[0009] A loading carrier is detachably installed on the loading rack. The loading carrier includes a loading cylinder and a piston cover. The bottom of the loading cylinder is provided with an openable and closable first discharge port. The piston cover is slidably attached to the inner peripheral wall of the loading cylinder.

[0010] A drive assembly is disposed on the loading rack. The output end of the drive assembly can contact the piston cover and drive the piston cover to move towards the bottom of the loading cylinder, so as to push the liquid in the loading cylinder out from the first discharge port.

[0011] Optionally, the drive assembly includes a drive member and a pressure plate. The drive member is disposed on the loading rack. 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.

[0012] Optionally, the piston cover is provided with a first groove adapted to the pressure plate, the inner peripheral wall of the first groove is provided with a plurality of first protrusions, the outer peripheral wall of the pressure plate is provided with a plurality of first slots, the first slots and the first protrusions are respectively corresponding to each other, the pressure plate can be placed in the first groove under the drive of the driving member, and the first protrusions are engaged with the first slots.

[0013] Optionally, the driving component includes a through-type stepper motor and a lead screw, the lead screw being connected to the through-type stepper motor, and the end of the lead screw being connected to the pressure plate.

[0014] Optionally, the loading rack includes a main frame, a first fixing plate, and a second fixing plate. The first fixing plate and the second fixing plate are respectively disposed on opposite sides of the main frame in the axial direction. The first fixing plate, the second fixing plate, and the main frame form an installation space with an installation opening on the side. The loading carrier is loaded into the installation space through the installation opening. The second fixing plate is used to support the loading cylinder. The second fixing plate is provided with a second discharge port, which is sealed and connected to the first discharge port.

[0015] Optionally, a valve is provided at the first discharge port. The valve includes a valve body and a valve core. The inlet of the valve body is connected to the inside of the loading cylinder, and the outlet of the valve body is connected to the first discharge port. The valve core has a normally closed working state that blocks the outlet of the valve body.

[0016] The second fixed plate is provided with a hollow ejector pin. One end of the ejector pin is connected to the second discharge port, and the other end of the ejector pin is provided with a feed port. The ejector pin is arranged opposite to the valve core and is used to push the valve core to open the outlet of the valve body so that the outlet of the valve body is connected to the feed port.

[0017] A tray for supporting the loading cylinder is provided above the second fixing plate. The tray is slidably connected to the ejector pin. A first elastic element is provided between the tray and the second fixing plate. The first elastic element is configured to always have the tendency to push the tray away from the second fixing plate.

[0018] 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.

[0019] Optionally, the feed inlet is located on the peripheral wall of the end of the ejector pin away from the second fixing plate, and a first sealing element is provided between the sleeve and the ejector pin.

[0020] Optionally, the tray is provided with a second groove, the inner peripheral wall of the second groove is provided with a plurality of second protrusions, the outer peripheral wall of the loading cylinder is provided with a plurality of second slots, the second slots and the second protrusions are provided in a one-to-one correspondence, the bottom of the loading cylinder is installed in the second groove, and the second protrusions are engaged with the second slots.

[0021] And / or, the tray is provided with a second seal surrounding the ejector pin, the second seal being able to conform to the loading cylinder.

[0022] Optionally, the main frame includes a pallet frame, which surrounds the outer edge of the second fixed plate. The pallet frame has a movable cavity, and the first elastic element is disposed in the movable cavity. The outer peripheral wall of the pallet is attached to the inner peripheral wall of the movable cavity. An annular baffle is provided on the inner peripheral wall of the movable cavity at the end away from the second fixed plate, and the pallet can abut against the annular baffle under the action of the first elastic element.

[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] Optionally, the piston cover is provided with a liquid injection port, and the liquid injection port is provided with a removable plug.

[0025] Optionally, 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.

[0026] Optionally, a handle is provided on the outer peripheral wall of the loading cylinder.

[0027] The beneficial effects of this utility model are:

[0028] This invention provides an injection-type liquid addition device, including a loading rack, a loading carrier, and a drive assembly. During operation, the liquid to be added is injected into the loading cylinder of the loading carrier. The loading carrier is then mounted on the loading rack, the first outlet is opened, and the drive assembly is activated. The drive assembly presses down the piston cap inside the loading cylinder, forcing the liquid out of the first outlet, thus achieving automatic control of the addition and improving the timeliness of the addition. Furthermore, by controlling the operation of the drive assembly, the pressing stroke and speed of the piston cap can be controlled, thereby achieving precise control of the addition amount and speed, which is beneficial for improving the modification effect and efficiency of the negative electrode material.

[0029] By setting the detachable connection between the loading carrier and the loading rack, the loading carrier containing different liquid materials can be flexibly replaced according to needs, with high flexibility in use, which is beneficial to improving the modification efficiency. At the same time, multiple loading carriers can share one loading rack and drive component, simplifying the structure of parts and thus reducing the part cost. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments of the present invention. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present invention and these drawings.

[0031] Figure 1 is a schematic structural diagram of the injection liquid adding device provided by the embodiment of the present invention;

[0032] Figure 2 is a schematic diagram of the injection liquid adding device provided by the embodiment of the present invention with the loading carrier hidden;

[0033] Figure 3 is a cross-sectional view of the loading carrier provided by the embodiment of the present invention;

[0034] Figure 4 is a schematic diagram of the pressure plate provided by the embodiment of the present invention;

[0035] Figure 5 is a cross-sectional view of the assembly drawing of the tray, tray rack and second fixing plate provided by the embodiment of the present invention;

[0036] Figure 6 is Figure 5 a partial enlarged view of

[0037] Figure 7 is a cross-sectional view of the valve provided by the embodiment of the present invention.

[0038] In the figure:

[0039] 100, loading rack; 101, installation space; 110, main frame body; 111, tray rack; 1111, movable cavity; 1112, annular baffle; 120, first fixing plate; 130, second fixing plate; 131, second discharge port; 132, ejector pin; 1321, feed port; 140, tray; 141, sleeve; 142, second groove; 143, second convex; 150, first elastic member; 160, first seal; 170, second seal;

[0040] 200. Loading carrier; 210. Loading cylinder; 211. Handle; 212. Second slot; 220. Piston cover; 221. First groove; 222. First protrusion; 223. Plug; 224. Clearance groove; 225. Connecting rod; 226. Valve; 2261. Valve body; 2262. Valve core; 2263. Second elastic element;

[0041] 300. Drive assembly; 310. Drive component; 311. Through-type stepper motor; 312. Lead screw; 320. Pressure plate; 321. First slot;

[0042] 400, discharge pipe; 410, 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 an injection-type liquid addition device, which can improve the accuracy of liquid addition and control the liquid addition speed, thereby improving the modification effect and efficiency of the negative electrode material.

[0048] Specifically, such as Figures 1-3 As shown, the injection liquid dispensing device includes a loading rack 100, a loading carrier 200, and a drive assembly 300.

[0049] The loading rack 100 serves to install the loading carrier 200 and the drive assembly 300.

[0050] The loading carrier 200 is detachably mounted on the loading rack 100. The loading carrier 200 includes a loading cylinder 210 and a piston cover 220. The bottom of the loading cylinder 210 is provided with an openable and closable first discharge port, and the piston cover 220 slides against the inner peripheral wall of the loading cylinder 210. It can be understood that opening the first discharge port and pressing down the piston cover 220 can discharge the liquid contained in the loading cylinder 210. When it is necessary to refill the loading cylinder 210 with liquid, the piston cover 220 needs to be pulled up to the top position of the loading cylinder 210.

[0051] The drive assembly 300 is mounted on the loading rack 100. The output end of the drive assembly 300 can contact the piston cover 220 and drive the piston cover 220 to move towards the bottom of the loading cylinder 210 so as to push the liquid in the loading cylinder 210 out from the first outlet.

[0052] The method of using this injection liquid dispensing device is as follows:

[0053] First, the liquid material to be added is injected into the loading cylinder 210 of the loading carrier 200;

[0054] Then, the loading carrier 200 is installed on the loading rack 100;

[0055] Finally, the first discharge port is opened, and the drive assembly 300 is started at the same time. The drive assembly 300 is controlled to drive the piston cover 220 to move a specific distance at a specific speed toward the bottom of the loading cylinder 210 according to the required feeding amount, so as to press out a specific amount of liquid from the first discharge port.

[0056] This injection-type liquid addition device automates the feeding process, improving the timeliness of feeding compared to manual feeding. Furthermore, by controlling the operation of the drive assembly 300, the downward stroke and speed of the piston cover 220 can be controlled, thereby achieving precise control over the feeding amount and speed, which is beneficial for improving the modification effect of the negative electrode material. In addition, by making the loading carrier 200 and the loading rack 100 detachable, the loading carrier 200 filled with different liquids can be flexibly replaced as needed, providing high flexibility and improving modification efficiency. At the same time, it also allows multiple loading carriers 200 to share a single loading rack 100 and drive assembly 300, simplifying the component structure and thus reducing component costs.

[0057] Understandably, the first discharge port can be connected to the equipment that needs to be fed through a pipeline to achieve feeding to a specific device. For example, in the modification of negative electrode materials, the first discharge port can be connected to a mixing device through a pipeline to mix the fed liquid with other modified materials.

[0058] Optionally, an annular groove can be provided on the outer peripheral wall of the piston cover 220, and a sealing ring can be installed in the annular groove. The part of the sealing ring protruding from the annular groove can be fitted against the inner peripheral wall of the filling cylinder 210 to achieve a seal between the piston cover 220 and the filling cylinder 210, thereby reducing the risk of liquid leakage.

[0059] Optional, continue to participate Figure 2 In one possible embodiment, the drive assembly 300 includes a drive element 310 and a pressure plate 320. The drive element 310 is disposed on the loading rack 100, and the output end of the drive element 310 is connected to the pressure plate 320.

[0060] When feeding is required, the control drive unit 310 drives the pressure plate 320 to extend and contact the piston cover 220, and pushes the piston cover 220 to move the required distance towards the bottom of the feeding cylinder 210. After all the liquid in the feeding cylinder 210 has been fed, the control drive unit 310 drives the pressure plate 320 to retract away from the piston cover 220 to avoid the feeding carrier 200, so that the feeding carrier 200 can be successfully removed from the feeding rack 100.

[0061] The drive assembly 300 has a simple structure and is easy to control. Furthermore, by applying pressure to the piston cover 220 through the pressure plate 320, the piston cover 220 is subjected to relatively uniform force, which helps to improve the smoothness and stability of the piston cover 220's movement, and thus helps to accurately control the amount of material fed.

[0062] Optionally, see [link to relevant documentation] Figure 2In 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 motion precision, which is beneficial for improving the feeding accuracy of the injection-type liquid dispensing 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.

[0063] 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.

[0064] Of course, in other possible embodiments, the driving component 310 can also be a cylinder, hydraulic cylinder or other mechanism that can output linear motion. It can be set according to actual needs, and this application does not make specific limitations.

[0065] Further, see also Figures 2-4 The piston cover 220 is provided with a first groove 221 that is adapted to the pressure plate 320. The inner peripheral wall of the first groove 221 is provided with a plurality of first protrusions 222. The outer peripheral wall of the pressure plate 320 is provided with a plurality of first slots 321. The first slots 321 and the first protrusions 222 are set in a one-to-one correspondence.

[0066] To facilitate the installation of the loading carrier 200 on the loading rack 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 220 after the loading carrier 200 is installed. Therefore, after the loading carrier 200 is installed, the drive unit 310 needs to be controlled to drive the pressure plate 320 closer to the piston cover 220, so that the pressure plate 320 enters the second groove 142, and at the same time, the first locking protrusion 222 on the first groove 221 engages with the first locking slot 321 on the pressure plate 320. Then, the drive unit 310 is controlled to stop, completing the preparation work for feeding.

[0067] By cooperating with the first groove 221 and the first latching protrusion 222 on the piston cover 220 and the first latching groove 321 on the pressure plate 320, the connection strength between the pressure plate 320 and the piston cover 220 can be improved, thereby improving the synchronization of the movement between the pressure plate 320 and the piston cover 220 during feeding, and further improving the accuracy of feeding.

[0068] Optionally, see [link to relevant documentation] Figure 2In this embodiment, the pressure plate 320 is circular; therefore, the first groove 221 is a circular groove. In another possible embodiment, the pressure plate 320 may also be square; in this case, the first groove 221 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 first groove 221 should be the same as the shape of the pressure plate 320.

[0069] Optionally, see [link to relevant documentation] Figure 3 In one possible embodiment, the piston cover 220 is provided with a liquid injection port, and a removable plug 223 is provided at the liquid injection port. The plug 223 can be removed to add liquid into the filling cylinder 210 through the liquid injection port, and the plug 223 can be installed after the liquid is added.

[0070] Optionally, see [link to relevant documentation] Figure 3 In one possible embodiment, the piston cover 220 is provided with a clearance groove 224, and a connecting rod 225 is provided at the opening of the clearance groove 224. The connecting rod 225 is used to pull the piston cover 220. That is, the clearance groove 224 and the connecting rod 225 form a "handle" structure for picking up and putting down the piston cover 220. When the liquid in the filling cylinder 210 is finished, the piston cover 220 moves to the bottom of the filling cylinder 210. In order to add liquid to the filling cylinder 210 again, the operator can lift the piston cover 220 to the top of the filling cylinder 210 by holding the connecting rod 225 or pinching the connecting rod 225 with two fingers.

[0071] The "handle" structure formed by the clearance groove 224 and the connecting rod 225 does not protrude from the upper surface of the piston cover 220, thus avoiding obstruction to the operation of the drive assembly 300. Furthermore, the clearance groove 224 also helps to reduce the weight of the piston cover 220 to some extent.

[0072] Optionally, multiple clearance slots 224 can be provided on the piston cover 220, and each clearance slot 224 corresponds to a connecting rod 225. This allows the piston cover 220 to be lifted simultaneously by two hands, or allows multiple workers to lift the piston cover 220 at the same time.

[0073] Optionally, see [link to relevant documentation] Figure 3 The outer peripheral wall of the loading cylinder 210 is provided with a handle 211. Workers can use the handle 211 to move the loading carrier 200.

[0074] Further, see also Figure 2In one possible embodiment, the loading rack 100 includes a main frame 110, a first fixing plate 120, and a second fixing plate 130. The first fixing plate 120 and the second fixing plate 130 are respectively disposed on opposite sides of the main frame 110 in the axial direction. The first fixing plate 120, the second fixing plate 130, and the main frame 110 form an installation space 101 with an installation opening on the side. The loading carrier 200 is inserted into the installation space 101 through the installation opening. This loading rack 100 has a simple structure and facilitates the installation and disassembly of the loading carrier 200.

[0075] Furthermore, the second fixing plate 130 is used to support the loading cylinder 210, and the second fixing plate 130 is provided with a second discharge port 131, which is sealed and connected to the first discharge port. That is, after the liquid material in the loading cylinder 210 is discharged from the first discharge port, it will directly enter the second discharge port 131 and finally be fed through the second discharge port 131.

[0076] Optionally, the drive assembly 300 may be disposed on the first fixing plate 120. In one possible embodiment, see further... Figure 2 A through-type stepper motor 311 is mounted on the first fixed plate 120, and a lead screw 312 is movably mounted on the first fixed plate 120.

[0077] Optionally, in one possible embodiment, the loading cylinder 210 has a cylindrical structure, and the main frame 110 includes an arc-shaped plate that surrounds the outer periphery of the loading cylinder 210 and can cover half of the outer periphery area of ​​the loading cylinder 210.

[0078] Optionally, see [link to relevant documentation] Figure 2 In one possible embodiment, the second outlet 131 is connected to one end of the outlet pipe 400, and the other end of the outlet pipe 400 is provided with a nozzle 410. That is, the liquid flowing out of the second outlet 131 will enter the outlet pipe 400 and then be fed through the nozzle 410. Feeding through the outlet pipe 400 and the nozzle 410 is simple in structure and facilitates the connection between the injection liquid addition device and the equipment that needs to be fed.

[0079] Furthermore, such as Figure 2 , Figure 3 , Figures 5-7 As shown, a valve 226 is provided at the first discharge port. The valve 226 includes a valve body 2261 and a valve core 2262. The inlet of the valve body 2261 is connected to the inside of the loading cylinder 210, and the outlet of the valve body 2261 is connected to the first discharge port. The valve core 2262 has a normally closed working state that blocks the outlet of the valve body 2261. It can be understood that when the valve core 2262 is not subjected to external force, it keeps the outlet of the valve body 2261 blocked to prevent the liquid in the loading cylinder 210 from flowing out; when the valve core 2262 is subjected to external force, it can open the outlet of the valve body 2261 to allow the liquid in the loading cylinder 210 to flow out smoothly.

[0080] The second fixed plate 130 is provided with a hollow ejector pin 132. One end of the ejector pin 132 is connected to the second discharge port 131, and the other end of the ejector pin 132 is provided with a feed port 1321. The ejector pin 132 is arranged opposite to the valve core 2262. The ejector pin 132 is used to apply force to the valve core 2262, so that the valve core 2262 opens the outlet of the valve body 2261. When the outlet of the valve body 2261 is opened, it will be connected to the feed port 1321 on the ejector pin 132, so that the liquid flowing out of the outlet of the valve body 2261 directly enters the interior of the ejector pin 132 through the feed port 1321.

[0081] Above the second fixing plate 130 is a tray 140 for supporting the loading cylinder 210. The tray 140 is slidably connected to the ejector pin 132. A first elastic member 150 is provided between the tray 140 and the second fixing plate 130. The first elastic member 150 is configured to always have the tendency to push the tray 140 away from the second fixing plate 130.

[0082] This injection-type liquid addition device has a non-feeding state and a feeding state.

[0083] 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 piston cover 220, and the tray 140 approaches the end of the ejector pin 132 under the action of the first elastic member 150. At this time, the ejector pin 132 is separated from or just in contact with the valve core 2622.

[0084] When the liquid addition device is in the feeding state, the output end of the drive component 300 presses down the piston cover 220 and the loading carrier 200 at the same time, so that the ejector pin 132 pushes the valve core 2262 to open the outlet of the valve body 2261. The liquid in the loading cylinder 210 flows sequentially through the outlet of the valve body 2261, the inlet 1321, the inside of the ejector pin 132, and the second outlet 131 for feeding.

[0085] To facilitate understanding, the working principle between valve body 2261, ejector pin 132, and tray 140 will be briefly introduced below:

[0086] When no loading carrier 200 is placed on the tray 140, the tray 140 is only subjected to the action of the first elastic member 150. At this time, the upper surface of the tray 140 is flush with the top surface of the ejector pin 132, that is, the ejector pin 132 does not protrude from the tray 140.

[0087] When installing the loading carrier 200, the loading cylinder 210 is placed on the tray 140, and the ejector pin 132 is aligned with the valve core 2262. Since the loading carrier 200 has weight, the tray 140 is pressed down under the gravity of the loading carrier 200. However, under the action of the first elastic element 150, the ejector pin 132 separates from or just contacts the valve core 2262, and the valve core 2262 can still keep blocking the outlet of the valve body 2261.

[0088] When feeding is required, the drive assembly 300 begins to press down the piston cover 220. After the drive assembly 300 applies pressure to the piston cover 220, the feeding carrier 200 is pushed by the thrust to move the tray 140 further towards the second fixed plate 130, so that the ejector pin 132 further lifts the valve core 2262, and finally the valve core 2262 opens the outlet of the valve body 2261. At this time, the top of the ejector pin 132 passes through the first discharge port and the outlet of the valve body 2261 and enters the valve body 2261. The liquid in the valve body 2261 will enter the hollow part of the ejector pin 132 through the feed port 1321 on the ejector pin 132, and finally be discharged from the second discharge port 131.

[0089] That is, after the drive assembly 300 presses down the piston cover 220, the valve 226 at the first outlet of the loading cylinder 210 will open to allow for material feeding. This makes it simple to control, as the valve 226 opening and feeding can be completed simply by controlling the drive assembly 300.

[0090] Optionally, see [link to relevant documentation] Figure 7 A second elastic element 2263 can be provided inside the valve body 2261. The second elastic element 2263 is configured to always have the tendency to push the valve core 2262 to block the outlet of the valve body 2261, so that the valve core 2262 can maintain the blockage of the outlet of the valve body 2261 when it is not pushed by the ejector pin 132.

[0091] Optionally, see [link to relevant documentation] Figure 3 and Figure 5 The tray 140 has a second groove 142, and the inner peripheral wall of the second groove 142 has multiple second latching protrusions 143. The outer peripheral wall of the loading cylinder 210 has multiple second latching slots 212, and the second latching slots 212 are arranged in a one-to-one correspondence with the second latching protrusions 143. The bottom of the loading cylinder 210 is installed in the second groove 142, and the second latching protrusions 143 are engaged with the second latching slots 212. The loading cylinder 210 is fixed by the cooperation of the second groove 142, the second latching protrusions 143, and the second latching slots 212. The structure is simple, facilitates the installation and disassembly of the loading cylinder 210, and has a good effect on fixing the loading cylinder 210.

[0092] Optionally, see [link to relevant documentation] Figure 5 and Figure 6The tray 140 has a through hole in the middle, and a sleeve 141 with one end communicating with the through hole is provided on the tray 140. The sleeve 141 is slidably sleeved on the outside of the ejector pin 132. That is, the tray 140 is slidably connected to the ejector pin 132 through the sleeve 141. This arrangement improves the reliability of the slidable connection between the tray 140 and the ejector pin 132.

[0093] Optionally, see [link to relevant documentation] Figure 5 and Figure 6 In one possible embodiment, the feed inlet 1321 is located on the peripheral wall of the end of the ejector pin 132 away from the second fixing plate 130, and a first sealing element 160 is provided between the sleeve 141 and the ejector pin 132. By providing the first sealing element 160, leakage of liquid from the sleeve 141 and the ejector pin 132 can be prevented, thereby improving the sealing performance of the injection liquid addition device.

[0094] Understandably, the first seal 160 is optional but not limited to a sealing ring.

[0095] Optionally, in order to improve the sealing performance between the sleeve 141 and the ejector pin 132, multiple first seals 160 can be provided along the axial direction of the sleeve 141, such as two or three, depending on actual needs.

[0096] Optionally, see [link to relevant documentation] Figure 7 In this embodiment, the inlet of the valve body 2261 is located on the side wall of the valve body 2261. When the ejector pin 132 pushes the valve core 2262 to the position of opening the outlet of the valve body 2261, the inlet of the valve body 2261 is sealed and connected with the feed port 1321.

[0097] Further, see also Figure 7 The tray 140 is provided with a second seal 170 surrounding the ejector pin 132, and the second seal 170 can fit into the filling cylinder 210. By providing the second seal 170, the sealing performance between the tray 140 and the filling cylinder 210 can be improved, reducing the risk of liquid leakage.

[0098] Further, see also Figure 2 and Figure 5The main frame 110 includes a pallet frame 111, which surrounds the outer edge of the second fixed plate 130. The pallet frame 111 has a movable cavity 1111, and a first elastic member 150 is disposed within the movable cavity 1111. The outer peripheral wall of the pallet 140 is fitted against the inner peripheral wall of the movable cavity 1111. An annular baffle 1112 is provided on the inner peripheral wall of the end of the movable cavity 1111 away from the second fixed plate 130, allowing the pallet 140 to abut against the annular baffle 1112 under the action of the first elastic member 150. By providing the pallet frame 111, the pallet 140 can be fixed through the movable cavity 1111, improving the stability of the pallet 140 installation; the movement of the pallet 140 can be guided through the movable cavity 1111, improving the stability of the pallet 140 movement; and the pallet 140 can be confined by the annular baffle 1112.

[0099] Alternatively, in one possible embodiment, the tray frame 111 and the aforementioned curved plate are an integral structure.

[0100] 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. An injection-type liquid dispensing device, characterized in that, include: Loading rack (100); A loading carrier (200) is detachably installed on the loading rack (100). The loading carrier (200) includes a loading cylinder (210) and a piston cover (220). The bottom of the loading cylinder (210) is provided with an openable and closable first discharge port. The piston cover (220) slides against the inner peripheral wall of the loading cylinder (210). A drive assembly (300) is disposed on the loading rack (100). The output end of the drive assembly (300) can contact the piston cover (220) and drive the piston cover (220) to move towards the bottom of the loading cylinder (210) so as to push the liquid in the loading cylinder (210) out from the first outlet.

2. The injection-type liquid addition device according to claim 1, characterized in that, The drive assembly (300) includes a drive member (310) and a pressure plate (320). The drive member (310) is disposed on the loading rack (100). 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 (220) and push the piston cover (220) to move towards the bottom of the loading cylinder (210). It can also drive the pressure plate (320) to retract away from the piston cover (220).

3. The injection-type liquid addition device according to claim 2, characterized in that, The piston cover (220) is provided with a first groove (221) adapted to the pressure plate (320). The inner peripheral wall of the first groove (221) is provided with a plurality of first locking protrusions (222). The outer peripheral wall of the pressure plate (320) is provided with a plurality of first locking slots (321). The first locking slots (321) and the first locking protrusions (222) are arranged in a one-to-one correspondence. The pressure plate (320) can be placed in the first groove (221) under the drive of the driving member (310), and the first locking protrusions (222) are engaged with the first locking slots (321).

4. The injection-type liquid dispensing device according to any one of claims 1-3, characterized in that, The loading rack (100) includes a main frame (110), a first fixing plate (120), and a second fixing plate (130). The first fixing plate (120) and the second fixing plate (130) are respectively disposed on opposite sides of the main frame (110) in the axial direction. The first fixing plate (120), the second fixing plate (130), and the main frame (110) form an installation space (101) with an installation opening on the side. The loading carrier (200) is loaded into the installation space (101) through the installation opening. The second fixing plate (130) is used to support the loading cylinder (210). The second fixing plate (130) is provided with a second discharge port (131), which is sealed and connected to the first discharge port.

5. The injection-type liquid addition device according to claim 4, characterized in that, A valve (226) is provided at the first discharge port. The valve (226) includes a valve body (2261) and a valve core (2262). The inlet of the valve body (2261) is connected to the inside of the loading cylinder (210), and the outlet of the valve body (2261) is connected to the first discharge port. The valve core (2262) has a normally closed working state that blocks the outlet of the valve body (2261). The second fixing plate (130) is provided with a hollow ejector pin (132). One end of the ejector pin (132) is connected to the second discharge port (131), and the other end of the ejector pin (132) is provided with a feed port (1321). The ejector pin (132) is arranged opposite to the valve core (2262) and is used to push the valve core (2262) to open the outlet of the valve body (2261) so that the outlet of the valve body (2261) is connected to the feed port (1321). A tray (140) for supporting the loading cylinder (210) is provided above the second fixing plate (130). The tray (140) is slidably connected to the ejector pin (132). A first elastic member (150) is provided between the tray (140) and the second fixing plate (130). The first elastic member (150) is configured to always have a tendency to push the tray (140) away from the second fixing plate (130).

6. The injection-type liquid addition device according to claim 5, characterized in that, The tray (140) has a through hole in the middle, and a sleeve (141) with one end communicating with the through hole is provided on the tray (140). The sleeve (141) is slidably sleeved on the outside of the ejector pin (132).

7. The injection-type liquid addition device according to claim 6, characterized in that, The feed inlet is located on the peripheral wall of the end of the ejector pin (132) away from the second fixing plate (130), and a first sealing element (160) is provided between the sleeve (141) and the ejector pin (132).

8. The injection-type liquid addition device according to claim 5, characterized in that, The tray (140) is provided with a second groove (142), and the inner peripheral wall of the second groove (142) is provided with a plurality of second latching protrusions (143). The outer peripheral wall of the loading cylinder (210) is provided with a plurality of second latching slots (212). The second latching slots (212) and the second latching protrusions (143) are arranged in a one-to-one correspondence. The bottom of the loading cylinder (210) is installed in the second groove (142), and the second latching protrusions (143) are engaged with the second latching slots (212). And / or, the tray (140) is provided with a second seal (170) surrounding the ejector pin (132), the second seal (170) being able to conform to the loading cylinder (210).

9. The injection-type liquid addition device according to claim 5, characterized in that, The main frame (110) includes a tray frame (111), which surrounds the outer edge of the second fixing plate (130). The tray frame (111) has a movable cavity (1111) inside. The first elastic element (150) is disposed in the movable cavity (1111). The outer peripheral wall of the tray (140) is attached to the inner peripheral wall of the movable cavity (1111). An annular baffle (1112) is provided on the inner peripheral wall of the movable cavity (1111) at the end away from the second fixing plate (130). The tray (140) can abut against the annular baffle (1112) under the action of the first elastic element (150).

10. The injection-type liquid addition device according to claim 4, characterized in that, The second discharge port (131) is connected to one end of the discharge pipe (400), and the other end of the discharge pipe (400) is provided with a nozzle (410).

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