Lipstick raw material mixing system

Abstract

The invention discloses a lipstick raw material mixing system, and relates to the technical field of cosmetic production, the lipstick raw material mixing system comprises a tank body, a cover body, a first motor and a stirring paddle, the stirring paddle penetrates through the cover body and is fixedly connected with the first motor; a grinding seat is fixedly arranged at the inner bottom of the tank body, an inverted-cone-shaped grinding cavity is formed in the grinding seat, an inverted-cone-shaped grinding block is rotationally arranged in the grinding seat, and a supporting column is fixedly arranged at the small end of the inverted-cone-shaped grinding block; a second motor is fixedly arranged at the outer bottom of the tank body and is fixedly connected with the supporting column; at least one circulating device is fixedly arranged on the outer side of the tank body and comprises a circulating main pipe, a first branch pipe, an electric push rod, a second branch pipe and a piston, the circulating main pipe communicates with the inverted-cone-shaped grinding cavity based on the first branch pipe and communicates with the middle space of the tank body based on the second branch pipe, and the output end of the electric push rod is fixedly connected with the upper end of the piston. By integrating the stirring structure, the grinding structure and the circulating device, grinding and stirring collaboration is achieved, the process is simplified, and the mixing uniformity is improved.

Description

Technical Field

[0001] This invention relates to the field of cosmetic production technology, specifically to a lipstick raw material mixing system. Background Technology

[0002] As a mainstream cosmetic product, the texture, color uniformity, and stability of lipstick directly determine the product quality and user experience, and the raw material mixing process is the core factor affecting these indicators. The raw material system of lipstick is complex, usually containing waxes (such as ceresin wax and beeswax), oils (such as castor oil and lanolin), pigments (such as inorganic pigments and organic lakes), and functional additives. The physicochemical properties of various raw materials differ significantly—waxes have high melting points and are solid at room temperature, oils are liquid, and pigments are mostly fine solid particles. This places stringent requirements on the stirring, dispersing, and grinding capabilities of the mixing equipment.

[0003] Existing lipstick raw material mixing equipment mainly uses a single stirring structure, lacking a matching grinding structure. This prevents further refining of pigment particle size and breaking up particle agglomerations during the stirring process. Instead, pigments must first be pre-ground and dispersed using a separate three-roll mill before being transferred to the stirring equipment along with waxes, oils, and other raw materials. This step-by-step processing method has significant technical flaws and process shortcomings: the pre-treatment stage adds extra equipment investment, labor costs, and production time. Furthermore, during the transfer of pigments from the three-roll mill to the stirring equipment, secondary agglomeration or contamination can easily occur, compromising the initial grinding effect. Ultimately, this may still result in lipstick products with mottled color, rough texture, and a grainy feel, affecting both the feel and appearance. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a lipstick raw material mixing system that integrates a stirring structure, a grinding structure and a circulation device to achieve synergistic grinding and stirring, which not only simplifies the process but also improves the mixing uniformity.

[0005] This invention provides a lipstick raw material mixing system, including a container, a lid covering the upper part of the container, a first motor fixedly mounted on the top of the lid, and a stirring paddle rotatably mounted inside the container. The upper end of the stirring paddle extends through the lid and is fixedly connected to the output end of the first motor. A grinding seat is fixedly mounted at the inner bottom of the container, and an inverted conical grinding cavity is formed within the grinding seat, with the larger end of the inverted conical grinding cavity facing the stirring paddle. An inverted conical grinding block is rotatably mounted in the inverted conical grinding cavity, with the circumferential surface of the inverted conical grinding block fitting against the inner wall of the inverted conical grinding cavity. There is a gap between the larger end of the inverted conical grinding block and the lower end of the stirring paddle. A support column is fixedly mounted at the smaller end of the inverted conical grinding block, and the support column extends through the bottom of the container. A second motor is fixedly mounted at the outer bottom of the container, and the output end of the second motor is fixedly connected to the support column. At least one circulation device is fixedly installed on the outside of the tank. The circulation device includes a main circulation pipe, a first branch pipe fixedly installed at the lower end of the main circulation pipe, an electric push rod fixedly installed at the upper end of the main circulation pipe, a second branch pipe fixedly installed on the side wall of the main circulation pipe, and a piston movably installed inside the main circulation pipe. The main circulation pipe is connected to the inverted conical grinding chamber through the first branch pipe, and the main circulation pipe is connected to the middle space of the tank through the second branch pipe. The output end of the electric push rod is fixedly connected to the upper end of the piston.

[0006] Specifically, the inner diameter of the circulating main tube is D. 主 The inner diameter of the first branch pipe is D1, and the inner diameter of the second branch pipe is D2. 主 The constraint relationship between D1 and D2 is as follows: 0.1D 主 ≤D1≤0.5D 主 0.5D 主 ≤D2≤D 主 .

[0007] Specifically, at least one first sealing ring is embedded on the outer circumferential surface of the piston.

[0008] Specifically, a plurality of baffles are fixedly disposed on the large end surface of the inverted conical grinding block, and the plurality of baffles are evenly distributed around the geometric center of the inverted conical grinding block.

[0009] Specifically, a temperature control jacket is provided on the outer circumference of the tank, and an observation window and a discharge valve are fixedly provided on the outer circumference of the tank. The outer bottom of the tank is connected to a support foot.

[0010] Specifically, the cover has a solid material inlet, a liquid material inlet, and a vent. A shielding cover is movably installed on the solid material inlet, a quick connector is fixedly installed on the liquid material inlet, and a filter screen is fixedly installed on the vent.

[0011] Specifically, a rotating channel is formed in the center of the bottom of the tank, and the support column is rotatably arranged in the rotating channel based on the bearing. At least two rotating plug seals are embedded in the end of the rotating channel near the inverted conical grinding block, and a mechanical seal water seal is fixedly arranged in the end of the rotating channel away from the inverted conical grinding block. The support column passes through the rotating plug seal and the mechanical seal water seal.

[0012] Specifically, the inner wall of the inverted conical grinding cavity is provided with multiple first raised textures, and the circumferential surface of the inverted conical grinding block is provided with multiple second raised textures.

[0013] Specifically, the lipstick raw material mixing system also includes a lifting mechanism, which includes a base frame fixedly installed on the side of the tank, a lifting bracket fixedly installed on the base frame, a lifting arm movably installed on the lifting bracket, a lead screw rotatably installed in the lifting bracket, a movable nut sleeved on the lead screw, and a reduction motor fixedly installed at the top of the lifting bracket. One end of the lifting arm is fixedly provided with a connecting sleeve, which is movably sleeved on the lifting bracket. The other end of the lifting arm is fixedly connected to the cover based on the connecting frame. The first motor is fixedly provided on the connecting frame. The lifting bracket has vertical guide rails on its opposite side walls, and the connecting sleeve has rollers on its opposite inner walls, which are rolled on the corresponding guide rails. The lead screw is vertically arranged in the center of the lifting bracket, and the output end of the reduction motor is fixedly connected to one end of the lead screw; vertical grooves are vertically opened on the opposite side walls of the lifting bracket, and connecting rods are fixedly installed on the opposite side walls of the movable nut. The connecting rods pass through the corresponding vertical grooves and are fixedly connected to the connecting sleeve.

[0014] Specifically, the lifting support and the base frame are connected by a crossbar, the lifting support is located at one end of the crossbar, the base frame is located at the other end of the crossbar, and the end of the crossbar away from the base frame is fixedly connected to the body of the base frame by a diagonal brace. A pad is fixedly installed at the bottom of the base frame, and the pad extends away from the tank body; auxiliary plates are fixedly installed on the three side walls of the base frame near the tank body, and the bottom of the three auxiliary plates are fixedly connected to the pad.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In operation, the lipstick raw material mixing system of the present invention not only uses a stirring paddle driven by a first motor to stir and mix the raw materials in the tank, but also uses a circulation device driven by an electric push rod to circulate and transport the raw materials to an inverted conical grinding chamber. The inverted conical grinding blocks driven by a second motor grind and disperse the raw materials. The raw materials that have been ground and dispersed by the inverted conical grinding blocks are then directly mixed into the system and stirred and mixed by the stirring paddle. This allows for the simultaneous refinement of pigment particle size and breaking of particle agglomeration during the stirring process, which greatly improves the uniformity of raw material mixing and the fineness of the finished lipstick. This achieves integrated operation of grinding and stirring, eliminating the need for pre-treatment with a separate three-roll mill, simplifying the production process, reducing equipment investment and labor costs, and avoiding secondary agglomeration and contamination during pigment transfer, thus ensuring the grinding effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an exploded structural diagram of the lipstick raw material mixing system in an embodiment of the present invention; Figure 2 This is a cross-sectional structural diagram of the lipstick raw material mixing system in an embodiment of the present invention; Figure 3 This is a schematic cross-sectional view of the grinding seat inside the tank in an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the inverted conical grinding block in an embodiment of the present invention; Figure 5 This is a schematic diagram of the lipstick raw material mixing system in the open state in an embodiment of the present invention; Figure 6 This is a schematic diagram of the closed state of the lipstick raw material mixing system in an embodiment of the present invention; Figure 7 This is an exploded structural diagram of the lifting mechanism in an embodiment of the present invention.

[0018] In the attached diagram, 10 is the tank body; 20 is the cover; 30 is the first motor; 40 is the agitator; 110 is the grinding base; 111 is the grinding feed channel; 112 is the guide channel; 113 is the rotating channel; 120 is the inverted conical grinding block; 121 is the baffle plate; 130 is the support column; 140 is the second motor; 150 is the temperature control jacket; 160 is the observation window; 170 is the discharge valve; 180 is the support foot; 200 is the circulation device; 210 is the main circulation pipe; 220 is the first branch pipe; 221 is the one-way valve; and 230 is the electric... 240. Moving push rod; 250. Second branch pipe; 310. Piston; 320. Shielding cover; 330. Quick connector; 400. Filter screen; 401. Lifting mechanism; 402. Crossbar; 403. Diagonal brace; 404. Pad; 405. Auxiliary plate; 410. Base frame; 420. Lifting bracket; 421. Guide rail; 422. Vertical groove; 430. Lifting arm; 431. Connecting sleeve; 4311. Roller; 432. Connecting frame; 440. Lead screw; 450. Movable nut; 451. Connecting rod; 460. Gear motor. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides a lipstick raw material mixing system. Figure 1 This diagram shows an exploded view of the lipstick raw material mixing system in an embodiment of the present invention. Figure 2 A cross-sectional structural schematic diagram of a lipstick raw material mixing system according to an embodiment of the present invention is shown. The lipstick raw material mixing system includes a tank 10, a cover 20 covering the upper end of the tank 10, a first motor 30 fixedly disposed on the top of the cover 20, and a stirring paddle 40 rotatably disposed inside the tank 10. The upper end of the stirring paddle 40 extends through the cover 20 and is fixedly connected to the output end of the first motor 30. The stirring paddle 40 serves as a stirring structure inside the tank 10 and is driven by the first motor 30 to rotate, thereby achieving stirring and mixing of the raw materials inside the tank 10.

[0021] Please see Figure 2A grinding seat 110 is fixedly installed at the bottom of the tank body 10. An inverted conical grinding cavity is formed inside the grinding seat 110, with the larger end of the inverted conical grinding cavity facing the stirring paddle 40. An inverted conical grinding block 120 is rotatably installed in the inverted conical grinding cavity. The circumferential surface of the inverted conical grinding block 120 is in contact with the inner wall of the inverted conical grinding cavity. There is a gap between the larger end of the inverted conical grinding block 120 and the lower end of the stirring paddle 40. A support column 130 is fixedly installed at the smaller end of the inverted conical grinding block 120, and the support column 130 extends out of the bottom of the tank body 10. A second motor 140 is fixedly installed at the bottom of the tank body 10, and the output end of the second motor 140 is fixedly connected to the support column 130. The inverted conical grinding cavity and the inverted conical grinding block 120 form a grinding structure. The inverted conical grinding block 120 is driven by the second motor 140 to rotate, which is used to grind and disperse the raw materials in the inverted conical grinding cavity.

[0022] Please see Figure 2 At least one circulation device 200 is fixedly installed on the outside of the tank body 10. The circulation device 200 includes a circulation main pipe 210, a first branch pipe 220 fixedly installed at the lower end of the circulation main pipe 210, an electric push rod 230 fixedly installed at the upper end of the circulation main pipe 210, a second branch pipe 240 fixedly installed on the side wall of the circulation main pipe 210, and a piston 250 movably installed inside the circulation main pipe 210. The circulation main pipe 210 is connected to the inverted conical grinding chamber through the first branch pipe 220, and the circulation main pipe 210 is connected to the middle space of the tank body 10 through the second branch pipe 240. The output end of the electric push rod 230 is fixedly connected to the upper end of the piston 250. In the circulation device 200, the piston 250 is driven by the electric push rod 230 to rise or fall within the circulation main pipe 210, thereby pushing the raw material to circulate in the main body space of the tank 10 and the inverted conical grinding chamber. When the piston 250 rises above the second branch pipe 240, the end of the second branch pipe 240 connected to the circulation main pipe 210 is opened, and the raw material in the main body space of the tank 10 automatically flows into the circulation main pipe 210 through the second branch pipe 240. Then, the piston 250 gradually lowers, and after closing one end of the second branch pipe 240, the raw material in the circulation main pipe 210 can be pressurized, thereby pushing the raw material through the first branch pipe 220 into the inverted conical grinding chamber.

[0023] In operation, the lipstick raw material mixing system of the present invention can not only use the stirring paddle 40 driven by the first motor 30 to stir and mix the raw materials in the tank 10, but also use the circulation device 200 driven by the electric push rod 230 to circulate and transport the raw materials to the inverted conical grinding chamber. The inverted conical grinding block 120 driven by the second motor 140 grinds and disperses the raw materials. The raw materials after being ground and dispersed by the inverted conical grinding block 120 are directly mixed into the system and stirred and mixed by the stirring paddle 40. Thus, the pigment particle size can be refined and particle agglomeration can be broken during the stirring process, which greatly improves the uniformity of raw material mixing and the fineness of the finished lipstick. This realizes the integrated operation of grinding and stirring, without relying on the pretreatment of an independent three-roll mill, simplifying the production process, reducing equipment investment and labor costs, and avoiding secondary agglomeration and contamination during the pigment transfer process, thus ensuring the grinding effect.

[0024] In some specific embodiments, please refer to Figure 1 or Figure 2 Two circulation devices 200 are provided, and the two circulation devices 200 are symmetrically distributed on both sides of the tank body 10. The symmetrical arrangement of circulation devices 200 on both sides of the tank body 10 not only helps to improve the uniformity of raw material circulation, but also helps to accelerate production efficiency and grinding frequency.

[0025] In some specific embodiments, please refer to Figure 1 or Figure 2 A one-way valve 221 is installed on the first branch pipe 220. The one-way valve 221 can prevent the raw material from flowing back from the inverted conical grinding chamber to the circulation main pipe 210, so that the raw material can only circulate in a preset direction, ensuring the grinding and dispersion effect of the entire mixing system. Moreover, during the rising process of the piston 250 (the piston 250 is located below the second branch pipe 240), since the one-way valve 221 prevents the raw material from flowing back, a negative pressure effect can be formed in the circulation main pipe 210; when the piston 250 rises to the open end of the second branch pipe 240, the negative pressure in the circulation main pipe 210 can quickly draw in the raw material, improving the raw material injection efficiency. Optionally, the one-way valve 221 can be a swing one-way valve or a butterfly one-way valve, which has a smooth flow channel, low fluid resistance, and high reliability.

[0026] In some specific embodiments, the grinding base 110 is made of one of 316L stainless steel, tungsten steel, or zirconium oxide ceramic, and the inverted conical grinding block 120 is made of one of 316L stainless steel, tungsten steel, or zirconium oxide ceramic. The grinding base 110 and the inverted conical grinding block 120 are made of the same material. Among them, 316L stainless steel is resistant to grease and weak acid and alkali corrosion, making it suitable for common raw materials in lipsticks such as waxes, oils, and organic / inorganic pigments. It also has good toughness, is not easy to break, is easy to clean and disinfect, and has low maintenance costs. Tungsten steel has extremely high hardness and wear resistance far exceeding that of stainless steel. Even when faced with raw materials such as inorganic pigments and lakes with high hardness, it can still maintain the adhesion and precision of the grinding surface after long-term grinding, greatly extending its service life. Moreover, it is resistant to high temperatures, and the heat generated during the grinding process will not cause the material to deform. Zirconia ceramic has excellent chemical stability, is completely resistant to acids and alkalis, and is corrosion resistant. It will not react chemically with lipstick raw materials, and there is no metal ion precipitation, avoiding metal contamination of raw materials. In addition, its smooth surface makes it difficult for materials to adhere, resulting in better pigment dispersion after grinding. It is suitable for high-end lipstick products with strict purity requirements.

[0027] In some specific embodiments, please refer to Figure 2 The grinding seat 110 has a grinding feed channel 111. One end of the grinding feed channel 111 is connected to the first branch pipe 220, and the other end of the grinding feed channel 111 is connected to the inverted conical grinding cavity. Figure 3 A cross-sectional view of the grinding chamber inside the tank is shown in an embodiment of the present invention. A guide groove 112 is formed on the inner wall of the inverted conical grinding cavity. One end of the guide groove 112 is connected to the grinding feed channel 111, and the other end of the guide groove 112 extends circumferentially along the inverted conical grinding cavity and gradually decreases in size. The guide groove 112 can accurately guide the raw material pressurized and conveyed by the circulation device 200 into the grinding interface, ensuring the feeding stability and efficiency of the grinding structure.

[0028] In some specific embodiments, the inner diameter of the circulation main tube 210 is D. 主 The inner diameter of the first branch pipe 220 is D1, and the inner diameter of the second branch pipe 240 is D2. 主 The constraint relationship between D1 and D2 is: 0.1D 主 ≤D1≤0.5D 主 0.5D 主 ≤D2≤D 主 The first branch pipe 220 has a smaller inner diameter, which increases the pressure of the raw material entering the inverted conical grinding chamber, making it easier for the raw material to enter the inverted conical grinding chamber. The second branch pipe 240 has a larger inner diameter, which facilitates the automatic and rapid flow of raw material from the middle of the tank 10 into the circulation main pipe 210.

[0029] In some specific embodiments, at least one first sealing ring is embedded on the outer peripheral surface of the piston 250. The first sealing ring on the outer peripheral surface of the piston 250 can enhance the sealing performance inside the circulation pipe 210, prevent raw material from leaking from the gap between the outer peripheral surface of the piston 250 and the inner wall of the circulation pipe 210, ensure the pressure stability when the piston 250 is pressurized, and guarantee the reliability of raw material circulation and transportation. Optionally, one, two, or three first sealing rings are provided; preferably, two first sealing rings are provided to balance sealing effect and smooth movement of the piston 250.

[0030] Figure 4 A three-dimensional structural diagram of the inverted conical grinding block 120 in an embodiment of the present invention is shown. Multiple baffles 121 are fixedly disposed on the large end surface of the inverted conical grinding block 120, and the baffles 121 are evenly distributed around the geometric center of the inverted conical grinding block 120. The baffles 121 at the large end of the inverted conical grinding block 120 form a cooperative structure with the stirring paddle 40. When the stirring paddle 40 rotates, it drives the raw materials in the tank to form an overall circulation. The baffles 121 can disrupt the flow trajectory of this circulation, increasing the turbulence of the raw materials, thereby allowing the finely ground pigment particles to integrate more quickly into the flow field formed by the stirring paddle 40, improving the mixing uniformity. Optionally, 3, 6, or 9 baffles 121 are provided; preferably, 6 baffles 121 are provided, balancing the baffle effect and ease of cleaning.

[0031] In some specific embodiments, please refer to Figure 1 The outer circumferential surface of the tank body 10 is covered with a temperature control jacket 150. The temperature control jacket 150 is used to introduce heat-carrying fluid to heat or cool the tank body 10, thereby flexibly adjusting the temperature inside the tank to meet the mixing requirements of wax raw materials with different melting points and ensuring the stability of the raw material texture during the mixing process.

[0032] In some specific embodiments, please refer to Figure 1 An observation window 160 is fixedly provided on the outer circumferential surface of the tank body 10. The observation window 160 facilitates the operator to monitor the mixing state of the raw materials in the tank and adjust the process parameters in a timely manner.

[0033] In some specific embodiments, please refer to Figure 1 A discharge valve 170 is fixedly installed on the outer circumferential surface of the tank body 10. The discharge valve 170 facilitates the operator to take samples for quality inspection and allows for convenient discharge of raw materials after mixing.

[0034] In some specific embodiments, please refer to Figure 1 The tank body 10 is connected to a support foot 180 at its outer bottom. The support foot 180 can improve the overall stability of the tank body 10 and form an equipment installation space at the outer bottom of the tank body 10, which is convenient for installing the second motor 140.

[0035] In some specific embodiments, please refer to Figure 1 The cover 20 has a solid material inlet, a liquid material inlet and a vent. A shielding cover 310 is movably installed on the solid material inlet, a quick connector 320 is fixedly installed on the liquid material inlet, and a filter screen 330 is fixedly installed on the vent.

[0036] The shielding cover 310 can quickly seal the solid material inlet after solid material feeding, preventing external dust and impurities from entering the tank 10 and contaminating the raw materials. It also prevents raw materials from splashing and overflowing during mixing, ensuring the cleanliness of the mixing environment. The quick connector 320 on the liquid material inlet is an existing feature, enabling quick plug-and-play connection of the liquid material conveying pipeline, significantly shortening the pipeline connection time before feeding and improving production efficiency. The built-in sealing structure of the quick connector 320 ensures no leakage at the connection point, is suitable for the stable conveying of liquid raw materials such as waxes, oils, and greases, and facilitates subsequent pipeline disassembly and cleaning, reducing maintenance difficulty. The filter 330 on the vent can intercept particulate matter from the outside air while balancing the pressure difference generated during mixing and heating in the tank, preventing it from entering the tank 10. This ensures the safety of the mixing process and prevents impurities from affecting the uniformity of the lipstick's texture.

[0037] In some specific embodiments, please refer to Figure 2 and Figure 3 The tank body 10 has a rotating channel 113 formed at the center of its bottom. The support column 130 is rotatably mounted in the rotating channel 113 based on a bearing. At least two rotating plug seals are embedded at the end of the rotating channel 113 near the inverted conical grinding block 120, and a mechanical seal water seal is fixedly mounted at the end of the rotating channel 113 away from the inverted conical grinding block 120. The support column 130 passes through the rotating plug seals and the mechanical seal water seal. Both the rotating plug seals and the mechanical seal water seal are existing types. Together, they form a double sealing structure within the rotating channel 113, effectively preventing the raw materials inside the tank from leaking through the gap between the support column 130 and the channel; at the same time, they prevent external impurities from entering the tank body 10, improving the sealing performance of the equipment, adapting to the stringent cleanliness requirements of cosmetic production, and extending the service life of the equipment.

[0038] In some specific embodiments, the inner wall of the inverted conical grinding cavity is provided with multiple first raised textures, and the circumferential surface of the inverted conical grinding block 120 is provided with multiple second raised textures. The first raised textures on the inner wall of the inverted conical grinding cavity and the second raised textures on the circumferential surface of the inverted conical grinding block 120 interweave, which can effectively increase the shear force and friction during the grinding process, thereby more efficiently breaking down the agglomeration structure of pigment particles, refining the pigment particle size, and improving the fineness and color uniformity of the finished lipstick.

[0039] Figure 5This diagram illustrates the open state of the lipstick raw material mixing system in an embodiment of the present invention. Figure 6 This diagram illustrates the closed-cap state of the lipstick raw material mixing system in an embodiment of the present invention. Figure 7 An exploded structural diagram of the lifting mechanism in an embodiment of the present invention is shown.

[0040] The lipstick raw material mixing system also includes a lifting mechanism 400, which includes a base frame 410 fixedly installed on the side of the tank 10, a lifting bracket 420 fixedly installed on the base frame 410, a lifting arm 430 movably installed on the lifting bracket 420, a lead screw 440 rotatably installed in the lifting bracket 420, a movable nut 450 sleeved on the lead screw 440, and a reduction motor 460 fixedly installed at the top of the lifting bracket 420. One end of the lifting arm 430 is fixedly provided with a connecting sleeve 431, which is movably sleeved on the lifting bracket 420. The other end of the lifting arm 430 is fixedly connected to the cover 20 based on the connecting frame 432. The first motor 30 is fixedly provided on the connecting frame 432. The lifting bracket 420 has guide rails 421 vertically arranged on its opposite side walls, and the connecting sleeve 431 has rollers 4311 rotatably arranged on its opposite inner walls. The rollers 4311 are rolled on the corresponding guide rails 421. The lead screw 440 is vertically arranged in the center of the lifting bracket 420, and the output end of the reduction motor 460 is fixedly connected to one end of the lead screw 440. Vertical grooves 422 are vertically opened on the opposite side walls of the lifting bracket 420, and connecting rods 451 are fixedly installed on the opposite side walls of the movable nut 450. The connecting rods 451 pass through the corresponding vertical grooves 422 and are fixedly connected to the connecting sleeve 431.

[0041] The lifting mechanism 400 operates as follows: The geared motor 460 drives the lead screw 440 to rotate forward. The forward-rotating lead screw 440 drives the movable nut 450 to move vertically upward along the lead screw 440 itself. The vertically upward-moving movable nut 450, through the connecting rod 451 and connecting sleeve 431, raises the entire lifting arm 430, thereby raising the cover 20, the stirring paddle 40, and the first motor 30 as a whole, opening the opening of the tank 10. The geared motor 460 drives the lead screw 440 to rotate in reverse. The reverse-rotating lead screw 440 drives the movable nut 450 to move vertically downward along the lead screw 440 itself. The vertically downward-moving movable nut 450, through the connecting rod 451 and connecting sleeve 431, lowers the entire lifting arm 430, thereby lowering the cover 20, the stirring paddle 40, and the first motor 30 as a whole, closing the opening of the tank 10.

[0042] The lifting mechanism 400 can lift the cover 20, the stirring paddle 40 and the first motor 30 as a whole, making it convenient for operators to clean, maintain and repair the inside of the tank 10.

[0043] In some specific embodiments, please refer to Figure 6 The lifting bracket 420 and the base frame 410 are connected by a crossbar 401. The lifting bracket 420 is located at one end of the crossbar 401, and the base frame 410 is located at the other end of the crossbar 401. The end of the crossbar 401 away from the base frame 410 is fixedly connected to the body of the base frame 410 by a diagonal brace 402. A pad 403 is fixedly provided at the bottom of the base frame 410, and the pad 403 extends away from the tank body 10. Auxiliary plates 404 are fixedly provided on the three side walls of the base frame 410 near the tank body 10, and the bottoms of the three auxiliary plates 404 are fixedly connected to the pad 403. The crossbar 401 and the diagonal brace 402 can enhance the connection strength between the lifting support 420 and the base frame 410, preventing the lifting mechanism 400 from shaking during operation; moreover, the pad 403 and the auxiliary plate 404 can improve the load-bearing capacity and stability of the base frame 410, disperse the vibration during equipment operation, ensure long-term stable operation of the equipment, and reduce the failure rate.

[0044] In some specific embodiments, a buffer gasket is provided at the closing point of the cover 20 and the tank 10. When the lifting mechanism 400 lowers the cover 20 to close, the buffer gasket can buffer the impact force between the cover 20 and the tank 10, avoiding wear or deformation caused by direct contact between metal parts; moreover, during equipment operation, the buffer gasket can absorb some of the vibration generated by stirring and grinding, reducing equipment operating noise and extending the service life of the cover 20 and the tank 10; furthermore, the buffer gasket can fill the gap between the cover 20 and the tank 10, forming a secondary sealing structure and improving the overall sealing performance of the tank 10.

[0045] The lipstick raw material mixing system of the present invention achieves a breakthrough optimization of the lipstick raw material mixing process through the integrated design of stirring structure, grinding structure and circulation structure. Compared to the traditional step-by-step processing mode, this system relies on the cooperative structure of the inverted conical grinding block 120 driven by the second motor 140 and the grinding seat 110, combined with the material reciprocating conveying function of the circulation device 200. It can continuously send the material in the middle of the tank 10 into the inverted conical grinding chamber for fine grinding while the stirring paddle 40 mixes the raw materials. The raised texture design of the inverted conical grinding chamber and the inverted conical grinding block 120 greatly enhances the grinding shearing force, which can efficiently break up pigment particle agglomerates and refine the particle size. The pipe diameter ratio of the circulation device 200 and the pressurizing structure of the piston 250 not only ensure the pressure and flow rate of the raw materials entering the inverted conical grinding chamber, but also realize the circulation of materials in the tank, so that the ground raw materials are quickly integrated into the stirring flow field, significantly improving the mixing uniformity of lipstick raw materials and the fineness of the finished product texture. At the same time, it eliminates the independent grinding pretreatment step, effectively reducing equipment investment, labor costs and production time, and avoiding secondary agglomeration and contamination during the material transfer process.

[0046] Furthermore, the lipstick raw material mixing system, including the lifting mechanism 400, temperature control jacket 150, and sealing structure, further enhances the practicality and stability of the equipment. The lifting mechanism 400, driven by the geared motor 460 and lead screw 440, can lift the lid 20, stirring paddle 40, and first motor 30 as a whole, facilitating cleaning, maintenance, and repair of the interior of the tank 10 by operators and reducing the difficulty of later equipment maintenance. The temperature control jacket 150 on the outer periphery of the tank 10 can flexibly adjust the internal temperature to adapt to the mixing requirements of wax raw materials with different melting points, ensuring the stability of the raw material texture during the mixing process. In addition, the dual sealing structure of the rotating channel 113, consisting of a rotating plug seal and a mechanical seal water seal, effectively prevents leakage of raw materials inside the can and intrusion of external impurities, meeting the stringent cleanliness requirements of cosmetic production. The design of the solid and liquid material inlet and vent filter 330 in the cap 20, as well as the observation window 160 and discharge valve 170 in the can 10, not only improves the convenience of feeding operations and the controllability of the production process, but also ensures the cleanliness of the mixing environment, comprehensively optimizing the production efficiency and product quality of lipstick raw material mixing.

[0047] Performance testing The results of a moisturizing true red lipstick prepared using this lipstick raw material mixing system (referred to as the experimental group) and a lipstick with the same formula prepared using the traditional "three-roll milling + stirring mixing" process (referred to as the control group) are shown in Table 1:

[0048] As shown in Table 1, the data from the experimental group and the control group were quite similar, and both groups of products exhibited good quality. However, the experimental group clearly outperformed the control group in all key indicators: The experimental group had a D90≤12μm, compared to the control group's D90≤15μm. This demonstrates that the combination of the raised texture of the inverted conical grinding chamber and the inverted conical grinding block, along with the repeated conveying and grinding effect of the circulation device, can more thoroughly break up pigment particle agglomeration and lay the foundation for the fineness of the paste. The experimental group's ΔE value was only 0.3~0.7, with a smaller fluctuation range than the control group's 0.5~0.9. This indicates that the integrated operation of the system avoids the secondary agglomeration problem of material transfer in traditional processes, resulting in more uniform mixing of raw materials and stronger color consistency of products in the same batch. The experimental group showed no particle agglomeration and was in a uniform colloidal state, while the control group showed a small number of fine agglomerates. This further confirms the advantage of the system's "simultaneous grinding and stirring" which allows the refined pigment particles to be immediately integrated into the mixing system, improving the texture of the paste. The experimental group scored 9.2 points for smoothness of application, slightly higher than the control group's 9.1 points. Although the difference is not large, it is due to the finer pigment particle size and more uniform paste structure, which can bring users a more delicate and unobstructed application experience.

[0049] The above provides a detailed description of a lipstick raw material mixing system provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A lipstick raw material mixing system, comprising a tank body, a cover body covering an upper end of the tank body, a first motor fixedly arranged on an outer top of the cover body, and a stirring paddle rotatably arranged in an inner portion of the tank body, an upper end of the stirring paddle penetrating through the cover body and fixedly connected with an output end of the first motor, characterized in that, The inner bottom of the tank body is fixedly provided with a grinding seat, an inverted conical grinding cavity is formed in the grinding seat, the large end of the inverted conical grinding cavity faces the stirring paddle; an inverted conical grinding block is rotatably arranged in the inverted conical grinding cavity, the peripheral surface of the inverted conical grinding block is attached to the inner wall of the inverted conical grinding cavity, there is a spacing space between the large end of the inverted conical grinding block and the lower end of the stirring paddle, the small end of the inverted conical grinding block is fixedly provided with a support column, and the support column penetrates through the bottom of the tank body; a second motor is fixedly arranged at the outer bottom of the tank body, and the output end of the second motor is fixedly connected with the support column; At least one circulating device is fixedly arranged on the outer side of the tank body, the circulating device comprises a circulating main pipe, a first branch pipe fixedly arranged at the lower end of the circulating main pipe, an electric push rod fixedly arranged at the upper end of the circulating main pipe, a second branch pipe fixedly arranged on the side wall of the circulating main pipe, and a piston movably arranged in the circulating main pipe, the circulating main pipe is communicated with the inverted conical grinding cavity based on the first branch pipe, the circulating main pipe is communicated with the middle space of the tank body based on the second branch pipe, and the output end of the electric push rod is fixedly connected with the upper end of the piston.

2. The lipstick raw material mixing system of claim 1, wherein, The inner diameter of the circulation main pipe is D 主 , the inner diameter of the first branch pipe is D1, the inner diameter of the second branch pipe is D2, and the constraint relationship of the D 主 , the D1 and the D2 is: 0.1D 主 ≤D1≤0.5D 主 , 0.5D 主 ≤D2≤D 主 .

3. The lipstick raw material mixing system of claim 1, wherein At least one first sealing ring is embedded on the peripheral surface of the piston.

4. The lipstick raw material mixing system of claim 1, wherein A plurality of spoiler plates are fixedly arranged on the large end surface of the inverted conical grinding block, and the plurality of spoiler plates are uniformly distributed around the geometric center of the inverted conical grinding block.

5. The lipstick raw material mixing system of claim 1, wherein A temperature control jacket is wrapped around the peripheral surface of the tank body, and an observation window and a discharge valve are fixedly arranged on the peripheral surface of the tank body. Supporting feet are connected to the outer bottom of the tank body.

6. The lipstick raw material mixing system of claim 1, wherein A solid material feeding port, a liquid material injection port and an air vent are formed in the cover body, a shielding cover is movably arranged on the solid material feeding port, a quick connector is fixedly arranged on the liquid material injection port, and a filter screen is fixedly arranged on the air vent.

7. The lipstick raw material mixing system of claim 1, wherein A rotating channel is formed in the central bottom of the tank body, the support column is rotatably arranged in the rotating channel based on a bearing, at least two rotating packing seals are embedded in one end of the rotating channel close to the inverted conical grinding block, a mechanical seal water seal is fixedly arranged at the other end of the rotating channel away from the inverted conical grinding block, and the support column penetrates through the rotating packing seals and the mechanical seal water seal.

8. The lipstick raw material mixing system of claim 1, wherein, A plurality of first raised lines are arranged on the inner wall of the inverted conical grinding cavity, and a plurality of second raised lines are arranged on the peripheral surface of the inverted conical grinding block.

9. The lipstick raw material mixing system of claim 1, wherein The lipstick raw material mixing system further comprises a lifting mechanism, the lifting mechanism comprises a base frame fixedly arranged beside the tank body, a lifting support fixedly arranged on the base frame, a lifting arm movably arranged on the lifting support, a lead screw rotatably arranged in the lifting support, a movable nut sleeved on the lead screw, and a speed reducer motor fixedly arranged at the top end of the lifting support; One end of the lifting arm is fixedly provided with a connecting sleeve, the connecting sleeve is movably sleeved on the lifting support, the other end of the lifting arm is fixedly connected with the cover body based on a connecting frame, and the first motor is fixedly arranged on the connecting frame; Opposite two side walls of the lifting support are vertically provided with guide rails, opposite two inner walls of the connecting sleeve are rotatably provided with rollers, and the rollers are rollingly arranged on the corresponding guide rails; The lead screw is vertically arranged in the center of the lifting support, an output end of the speed reducer is fixedly connected with one end of the lead screw, and opposite two side walls of the lifting support are vertically provided with vertical grooves.

10. The lipstick raw material mixing system of claim 9, wherein, The lifting support and the base frame are connected based on the cross bar, the lifting support is located at one end of the cross bar, the base frame is located at the other end of the cross bar, and the end of the cross bar away from the base frame is fixedly connected with the body of the base frame based on the inclined support rod; The bottom of the base frame is fixedly provided with a pad plate, and the pad plate extends away from the tank body; three side walls of the base frame close to the tank body are fixedly provided with auxiliary plates, and the bottoms of the three auxiliary plates are fixedly connected with the pad plate.

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