Sampling detection device for cosmetics

Abstract

The invention discloses a sampling and detecting device for cosmetics, and relates to the technical field of cosmetic detection, the sampling and detecting device comprises a blanking unit, a switching unit, a top cap, a rotating cylinder, a rotating ring and a limiting disc; and the detection unit comprises a rotating rod, a plurality of groups of extraction assemblies, a cover plate and an extraction rod. The multi-point sampling device has the beneficial effects that accurate switching and positioning of multi-point sampling are realized, each sampling is performed at a preset liquid level, and the sampling precision and efficiency are greatly improved. According to the device, through cooperation of the limiting disc and the rotating ring, personal errors are reduced, and operation convenience and stability are improved. Due to the design of the multiple sets of extraction assemblies, sampling at low, medium and high liquid levels can be completed through one-time operation, the operation steps are simplified, and the sampling time is shortened. Automatic control and standardized operation ensure that sampling conditions are consistent each time.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetics detection, in particular to a cosmetics sampling and detection device. Background Art

[0002] In the cosmetics industry, products are usually in the form of liquids or pastes. These products are intended to be distributed on the human body surface by smearing, spraying or other application methods. Their main purpose is to clean, maintain, beautify, modify appearance or improve body odor. Cosmetics are essentially chemical industrial products or fine chemical products. An important part of cosmetics quality control is sample testing, that is, selecting representative samples from the entire batch to be tested to evaluate the overall quality and characteristics of the batch.

[0003] For liquid cosmetics, the conventional testing process involves extracting a certain amount of sample from the finished container into a test tube and placing it under a microscope or using a specialized testing instrument for analysis. When dealing with bottled or canned liquid cosmetics, in order to ensure the comprehensiveness and accuracy of the test results, technicians often collect multiple samples from different liquid levels and then conduct unified comparative tests. However, this multi-point sampling method has some obvious shortcomings. First, frequent replacement of test tubes increases the complexity of the operation and may introduce additional variables, thereby affecting the consistency of the test. Secondly, due to the lack of precise positioning tools, the liquid level of manual sampling is difficult to standardize, which may lead to significant differences in sample composition, thereby affecting the final test results. Summary of the invention

[0004] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a cosmetic sampling and testing device, which can solve the problem of frequent replacement of reagents in cosmetic testing and the problem of difficulty in standardizing the liquid level of manual sampling.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A cosmetic sampling and testing device, comprising a switching unit, including a top cap, a rotating drum arranged at the bottom of the top cap, a rotating ring arranged at the bottom of the rotating drum, and a limiting plate arranged at the bottom of the rotating ring; The detection unit includes a rotating rod disposed inside the rotating drum, a plurality of extraction components disposed around the rotating rod, a cover plate disposed at the end of the extraction component, and an extraction rod movably penetrating one side of the cover plate; The rotating drum can rotate itself to make the extraction components revolve to switch to the next group; or can make the extraction components rotate and rise and fall into the body to be detected.

[0007] As a preferred solution of the cosmetic sampling and testing device of the present invention, wherein: the rotating drum includes inner teeth arranged on the inner side thereof; The rotating rod comprises a first outer tooth arranged on the outer side thereof, and a driving wheel which is movably arranged on the cover plate and the top cap axis at the same time.

[0008] As a preferred solution of the cosmetic sampling and testing device of the present invention, the extraction component includes a storage tube arranged on the periphery of the rotating rod, and an extraction tube arranged inside the storage tube.

[0009] As a preferred solution of the cosmetic sampling and testing device of the present invention, the top cap includes a first center hole penetrating the axis thereof and a first through hole disposed on one side of the end surface thereof; The cover plate includes a second central hole penetrating the axis thereof, and a plurality of groups of second through holes circumferentially arranged on the end surface thereof; The rotating ring comprises a third central hole penetrating through the axis thereof, and a plurality of groups of third through holes circumferentially arranged on the end surface thereof.

[0010] As a preferred solution of the cosmetic sampling and testing device of the present invention, wherein: the cover plate is movably sleeved on the extraction component and the end surface of the rotating rod; The third through hole is limitedly sleeved on the outside of the storage tube.

[0011] As a preferred solution of the cosmetic sampling and testing device of the present invention, the storage tube includes a second outer tooth arranged on the outer side thereof, a storage cavity arranged on the inner side thereof, and a channel penetrating the end of the storage cavity; The extraction assembly also includes a movable seat that is sealed and sleeved on the inner side of the storage cavity.

[0012] As a preferred solution of the cosmetic sampling and testing device of the present invention, the movable seat includes a pressing portion arranged at an end thereof, and a receiving portion protruding from the other side of the pressing portion; A first spring is connected between the end surface of the storage cavity and the end surface of the extrusion portion.

[0013] As a preferred solution of the cosmetic sampling and testing device of the present invention, wherein: the first through hole is convexly provided on the end surface of the top cap; And the extraction rod is movably disposed in the first through hole; A second spring is connected between the extraction rod and the first through hole.

[0014] As a preferred solution of the cosmetic sampling and testing device of the present invention, wherein: the storage tube further comprises a threaded groove arranged at the bottom thereof; The extraction tube comprises a thread arranged on the outer side thereof, and a plurality of groups of limiting grooves opened on the circumference of the thread.

[0015] As a preferred solution of the cosmetic sampling and testing device of the present invention, the limiting plate includes a limiting block arranged on its circumference and a limiting ring arranged on its inner side; A group of baffles are arranged on the inner side of the limiting ring; And the thread is threadably connected to the thread groove; The blocking piece is elastically snapped into the limiting groove.

[0016] The beneficial effects of the present invention are as follows: accurate switching and positioning of multi-point sampling is achieved, ensuring that each sampling is carried out at a preset liquid level, greatly improving the accuracy and efficiency of sampling. The device reduces human errors and improves the convenience and stability of operation through the coordination of the limit plate and the rotating ring. The design of multiple sets of extraction components enables sampling of three different liquid levels, low, medium and high, to be completed in one operation, simplifying the operating steps and shortening the sampling time. Automated control and standardized operation ensure consistent conditions for each sampling, enhancing the reliability and accuracy of the test results, and is suitable for multi-point sampling and testing needs of cosmetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the cosmetic sampling and testing device of the present invention.

[0019] Figure 2 It is a three-dimensional partial cross-sectional view of the cosmetic sampling and testing device of the present invention.

[0020] Figure 3 It is a schematic diagram of the explosion of the cosmetic sampling and testing device of the present invention.

[0021] Figure 4 It is a schematic diagram of the front full cross-section structure of the cosmetic sampling and testing device of the present invention.

[0022] Figure 5 For the present invention Figure 4 An enlarged schematic diagram of the movable seat and extraction rod structure at A in the middle.

[0023] Figure 6 For the present invention Figure 4 An enlarged schematic diagram of the connection structure between the storage tube and the extraction tube at B in the middle.

[0024] Figure 7 It is a schematic diagram of the full cross-section structure of the bottom of the cosmetic sampling and testing device of the present invention.

[0025] In the figure: 1, switching unit; 2, detection unit; 3, object to be detected; 11, top cap; 12, rotating drum; 13, rotating ring; 14, limiting plate; 21, rotating rod; 22, extraction assembly; 23, cover plate; 24, extraction rod; 111, first center hole; 112, first through hole; 121, inner teeth; 131, third center hole; 132, third through hole; 141, limiting block; 142, limiting ring; 211, first outer teeth; 212 , driving wheel; 221, storage tube; 222, extraction tube; 223, movable seat; 224, first spring; 231, second center hole; 232, second through hole; 241, second spring; 1221, second outer tooth; 1421, baffle; 2212, storage cavity; 2213, channel; 2214, thread groove; 2221, thread; 2222, limiting groove; 2231, extrusion part; 2232, accommodating part; M, gap. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1 Reference Figure 1~Figure 2 , which is the first embodiment of the present invention, and provides a cosmetic sampling and testing device, which includes a switching unit 1, including a top cap 11, a rotating drum 12 arranged at the bottom of the top cap 11, a rotating ring 13 arranged at the bottom of the rotating drum 12, and a limiting plate 14 arranged at the bottom of the rotating ring 13; The detection unit 2 includes a rotating rod 21 disposed inside the rotating drum 12, a plurality of extraction components 22 disposed around the rotating rod 21, a cover plate 23 disposed at the end of the extraction component 22, and an extraction rod 24 movably penetrating one side of the cover plate 23; The drum 12 rotates itself to make the extraction assembly 22 revolve to switch to the next group; or the extraction assembly 22 rotates and rises and falls into the object to be detected 3.

[0030] It should be noted that the drum 12 is a hollow cylindrical structure, which can accommodate the detection unit 2. The drum 12 can be rotated to switch different extraction components 22. The top cap 11 is fixedly connected to the top of the drum 12 by a bayonet method, so that it can ensure that the extraction component 22 inside the drum 12 and the axis of the rotating rod 21 are limited at the specified position. The rotating ring 13 is also fixed to the bottom of the drum 12 by a buckle, and the extraction component 22 can be made to revolve or rotate in place by different matching methods. In addition, a set of limiting disks 14 are also slidably connected at the bottom of the rotating ring 13. The limiting disk 14 is designed with multiple limiting holes inside, which can limit multiple groups of extraction components 22 to extract cosmetics with different liquid levels, ensuring that the extraction components 22 can be sampled at the correct liquid level. The rotating rod 21 is limited by the top cap 11 and the axis of the rotating ring 13 at the axis of the drum 12. The extraction components 22 are arranged in a circular array on the circumference of the rotating rod 21, and each group of extraction components 22 can be used to absorb cosmetic samples. The cover plate 23 is slidably mounted on the ends of all the extraction components 22. When the extraction components 22 are switched to the extraction surface during revolution, the slots on the cover plate 23 allow the extraction rod 24 to be inserted into the cosmetics for sampling. The extraction rod 24 is movable through the cover plate 23 and can extract the extraction components 22.

[0031] Preferably, the extraction components 22 in this embodiment are three groups, which can correspond to the extraction of three different liquid cosmetics of low, medium and high. The rotating drum 12 and the three groups of extraction components 22 and the rotating rod 21 are matched to form a planetary mechanism. Among them, the rotating drum 12 is a gear ring, the extraction components 22 are planetary gears, the rotating rod 21 is a sun gear, and the rotating ring 13 is a planetary carrier. When the rotating drum 12 rotates and the rotating rod 21 is fixed or reversed, the extraction components 22 begin to revolve and switch between the extraction components 22; and when the rotating drum 12 rotates and the rotating ring 13 is fixed or reversed, the extraction components 22 begin to rotate in place to achieve the requirement of sinking the extraction components 22 to the specified liquid level.

[0032] In summary, the present invention provides an automatic sampling device for cosmetic testing, which realizes the precise switching and positioning of multi-point sampling through a planetary mechanism composed of a rotating drum 12, an extraction component 22 and a rotating rod 21, ensuring that each sampling is carried out at a preset liquid level, greatly improving the accuracy and efficiency of sampling. The device reduces human errors and improves the convenience and stability of operation through the cooperation of a limit plate 14 and a rotating ring 13. The design of multiple sets of extraction components 22 enables sampling of three different liquid levels, low, medium and high, to be completed in one operation, which simplifies the operating steps and shortens the sampling time. Automated control and standardized operation ensure that the conditions for each sampling are consistent, enhance the reliability and accuracy of the test results, and are suitable for multi-point sampling and testing needs of cosmetics.

[0033] Example 2 Reference Figure 1~Figure 5 , which is the second embodiment of the present invention, and which is different from the first embodiment in that: the rotating drum 12 also includes inner teeth 121 arranged on the inner side thereof; The rotating rod 21 includes a first outer tooth 211 disposed on the outer side thereof, and a driving wheel 212 movably penetrating the axis of the cover plate 23 and the top cap 11 .

[0034] Furthermore, the extraction assembly 22 includes a storage tube 221 disposed on the circumference of the rotating rod 21 , and an extraction tube 222 disposed inside the storage tube 221 .

[0035] Furthermore, the top cap 11 includes a first central hole 111 penetrating the axis thereof, and a first through hole 112 disposed on one side of the end surface thereof; The cover plate 23 includes a second central hole 231 penetrating the axis thereof, and a plurality of groups of second through holes 232 circumferentially arranged on the end surface thereof; The rotating ring 13 includes a third central hole 131 penetrating the axis thereof and a plurality of third through holes 132 circumferentially arranged on the end surface thereof.

[0036] The cover plate 23 is movably sleeved on the end surfaces of the extraction component 22 and the rotating rod 21; The third through hole 132 is limitedly sleeved on the outer side of the storage tube 221 .

[0037] Furthermore, the storage tube 221 includes a second outer tooth 2211 arranged on the outside thereof, a storage cavity 2212 arranged on the inside thereof, and a channel 2213 penetrating the end of the storage cavity 2212 ; the extraction component 22 also includes a movable seat 223 sealed and sleeved on the inside of the storage cavity 2212 .

[0038] Furthermore, the movable seat 223 includes a pressing portion 2231 disposed at an end thereof, and a receiving portion 2232 protruding from the other side of the pressing portion 2231; A first spring 224 is connected between an end surface of the storage cavity 2212 and an end surface of the pressing portion 2231 .

[0039] The first through hole 112 is protruded from the end surface of the top cap 11; The extraction rod 24 is movably disposed in the first through hole 112; A second spring 241 is connected between the extraction rod 24 and the first through hole 112 .

[0040] It should be noted that the extraction assembly 22 in this embodiment and in the first embodiment are both three groups. The driving wheel 212 is movably inserted through the first center hole 111 of the axis of the top cap 11 and the second center hole 231 of the axis of the cover plate 23, and is threadedly fixedly connected to the upper end of the rotating rod 21; and the bottom of the rotating rod 21 is also axially limited in the third center hole 131 of the rotating ring 13, so that the rotating rod 21 is located at the axis of the rotating drum 12, acting as a sun gear. A circle of first external teeth 211 is fixedly arrayed on the circumference of the rotating rod 21, and a circle of internal teeth 121 is arrayed on the inner wall of the rotating drum 12, and three groups of storage tubes 221 can be set therein; and the second external teeth 2211 arrayed on the outer side of the storage tube 221 are meshed with the first external teeth 211 and the internal teeth 121 at the same time.

[0041] Preferably, a third through hole 132 matching with the body of the storage tube 221 is formed through the end surface of the rotating ring 13 . The third through hole 132 not only limits the storage tube 221 to the peripheral side of the rotating rod 21 , but also meshes with the inner teeth 121 .

[0042] Preferably, the driving wheel 212 is arranged on the outer side of the end surface of the top cap 11, and its shape is a turntable, which is convenient for the inspection personnel to operate. The outer side walls of the rotating drum 12 and the rotating ring 13 are provided with arc grooves with equal spacing, which are convenient for the operator to hold and operate.

[0043] Preferably, the extraction assembly 22 is composed of a group of storage tubes 221, an extraction tube 222 sleeved on the inner bottom of the storage tube 221, and a movable seat 223 sleeved on the inner end of the storage tube 221. The extraction tube 222 can sink to the specified liquid level of the body 3 to be detected to extract the cosmetic reagent. The movable seat 223 is a piston, which can change the pressure difference of the storage chamber 2212 inside the storage tube 221 by moving, so that the extraction tube 222 can extract the cosmetic reagent. The movable seat 223 is movably connected to the inner wall of the storage chamber 2212, and the movable seat 223 is composed of a squeeze portion 2231 for sealing and sliding at the bottom, and a receiving portion 2232 protruding from the upper end surface of the squeeze portion 2231; the squeeze portion 2231 is in sealing and sliding cooperation with the storage chamber 2212, and the receiving portion 2232 can be sleeved with the extraction rod 24.

[0044] like Figure 5As shown, a first spring 224 is connected between the top end surface of the storage cavity 2212 and the end surface of the extrusion portion 2231. The movable seat 223 can also be suspended at the top position of the storage cavity 2212 by the first spring 224 without being affected by external forces. A channel 2213 is provided through the upper end surface of the storage tube 221. The diameter of the channel 2213 is consistent with the rod diameter of the extraction rod 24, so that the extraction rod 24 can be inserted into the channel 2213 to push the movable seat 223 downward. The cover plate 23 will move along with the storage tube 221 when the three groups of second through holes 232 matching the three groups of storage tubes 221 are engaged. The cover plate 23 fits the storage tube 221 together, so that there is a certain gap M between the cover plate 23 and the top cap 11. The gap M allows the extraction rod 24 to avoid the revolution of the storage tube 221 after it leaves the channel 2213. The first through hole 112 provided through the top cap 11 is an extended tube groove convexly provided at the end of the top cap 11, which allows sufficient space for a set of second springs 241 to be fixedly connected between the extraction rod 24 and the first through hole 112. The second spring 241 will always exert a force on the extraction rod 24 to move downward without the influence of external force. The elasticity of the second spring 241 is greater than that of the first spring 224. When the extraction rod 24 enters the channel 2213 and acts on the movable seat 223, the first spring 224 will be stretched to allow the movable seat 223 to move downward.

[0045] When in use, the operator rotates the driving wheel 212 with one hand while pulling the extraction rod 24 out of the channel 2213 so that it is in the gap M; and limits the rotation of the drum 12 with the other hand; the rotating rod 21 starts to rotate, and the three groups of storage tubes 221 arranged at equal intervals and meshing on its circumference start to revolve along the inner teeth 121 of the inner wall of the drum 12, so that the second through hole 232 on the cover plate 23 is misaligned with the extraction rod 24, and then the extraction rod 24 is released to be pressed on the cover plate 23. Then, the driving wheel 212 is rotated continuously to limit the drum 12. When the next set of storage tubes 221 in the drum 12 come under the first through hole 112, the axis of the first through hole 112 coincides with the axis of the second through hole 232, so that the axis of the extraction rod 24 coincides with the axis of the channel 2213, so that the extraction rod 24 can be smoothly inserted into the channel 2213, and the extraction rod 24 moves downward to position the next set of storage tubes 221 under the first through hole, completing the switching. Then, the extraction tube 222 is moved downward to the specified liquid level, and the extraction rod 24 is pulled out, so that the first spring 224 retreats, and then the liquid is pumped into the extraction tube 222 and the storage tube 221, completing the sampling task.

[0046] In summary, in this embodiment, the inner teeth 121 on the inner side of the rotating drum 12 are multiple meshed with the first outer teeth 211 on the outer side of the rotating rod 21 and the second outer teeth 2211 on the outer side of the storage tube 221, thereby realizing the linkage between the rotating rod 21 and the storage tube 221, and ensuring the stable switching and positioning of the extraction component 22. The coordinated design of the driving wheel 212 and the rotating drum 12 allows the operator to easily realize the revolution and rotation of the extraction component 22 through simple manual operation, ensuring that each switch can be accurately positioned to the specified liquid level. The movable seat 223 in the storage tube 221 further improves the stability and reliability of sampling through the synergistic effect of the first spring 224 and the second spring 241. The overall design not only improves the accuracy and efficiency of sampling, but also significantly enhances the stability of the switching effect, and is suitable for multi-point sampling and testing needs of various cosmetics.

[0047] Example 3 Reference Figure 1 to Figure 7 , which is the third embodiment of the present invention, and which is different from the first two embodiments in that: the movable seat 223 includes a pressing portion 2231 disposed at an end thereof, and a receiving portion 2232 protruding from the other side of the pressing portion 2231; A first spring 224 is connected between an end surface of the storage cavity 2212 and an end surface of the pressing portion 2231 .

[0048] Furthermore, the storage tube 221 also includes a threaded groove 2214 disposed at the bottom thereof; The extraction tube 222 includes a thread 2221 disposed on the outer side thereof, and a plurality of groups of limiting grooves 2222 opened around the thread 2221 .

[0049] Furthermore, the limiting plate 14 includes a limiting block 141 disposed on its circumference and a limiting ring 142 disposed on its inner side; A set of baffles 1421 is provided on the inner side of the limiting ring 142; The thread 2221 is threadedly connected to the thread groove 2214; The blocking piece 1421 is elastically engaged in the limiting groove 2222 .

[0050] It should be noted that the connection between the extraction tube 222 and the storage tube 221 is a threaded connection. The bottom of the storage tube 221 is provided with a thread groove 2214, and the tube body of the extraction tube 222 is provided with a thread 2221, so as to facilitate the purpose of rotating the extraction tube 222 downward. The outer side of the thread 2221 provided on the outer side of the extraction tube 222 is provided with a plurality of groups of limit grooves 2222, such as Figure 7 As shown, it extends outward to facilitate cooperation with or separation from the blocking piece 1421.

[0051] Preferably, the limit plate 14 is movable and snap-fastened at the bottom of the rotating ring 13, and can rotate axially relative to the rotating ring 13. A group of limit rings 142 are convexly provided under the bottom of the limit plate 14, and the limit rings 142 can be overlapped in the bottle mouth of the object to be detected 3, so as to facilitate the fixed overlap of the device. A group of baffles 1421 are convexly provided on the inner side wall of the limit ring 142, and the position of the baffles 1421 should be consistent with the first through hole 112, so as to facilitate the clamping and limiting of the limit groove 2222 outside the extraction tube 222 here, so as to realize the radial limit function of the extraction tube 222, and then rotate and move the extraction tube 222 downward under the rotation of the storage tube 221 above the extraction tube 222.

[0052] Preferably, a plurality of arrays of limit blocks 141 are protruding from the outer side of the limit plate 14 , and the limit blocks 141 can limit the displacement of the baffle inside the limit ring 142 .

[0053] A threaded ring is provided on the outer side of the limiting ring 142 , and the protection bottle can be connected by a threaded connection method to protect the bottom of the extraction tube 222 . Other structures are consistent with those of the second embodiment.

[0054] Usage process: First, the limiting plate 14 of the device is set at the bottle mouth of the object to be detected 3. At this time, the extraction tubes 222 are all located in the storage cavity 2212 inside the storage tubes 221, and the extraction rod 24 extends into the first group of storage tubes 221 and stretches the first spring 224 downward.

[0055] Initial sampling: The operator rotates the driving wheel 212 forward and limits the rotation of the rotating ring 13 and the limiting plate 14, so that the storage tube 221 rotates in place under the limit of the third through hole 132 inside the rotating ring 13. The blocking piece 1421 on the limiting plate 14 limits the extraction tube 222 to follow the rotation of the storage tube 221 in place, so that it moves relative to the storage tube 221. Under the action of the thread groove 2214 and the thread 2221, the extraction tube 222 is screwed out and lowered. The liquid level depth of the extraction tube 222 can be accurately controlled by the lifting and lowering action of the thread.

[0056] When the tube head of the extraction tube 222 reaches a specified position, such as a high liquid level, the extraction rod 24 is pulled upward to retract the first spring 224 to extract a certain amount of cosmetics. After completion, the reverse drive wheel 212 is reversed to make the extraction tube 222 retreat into the storage tube 221.

[0057] Switch the extraction assembly: Pull the extraction rod 24 out of the channel 2213 so that it is in the gap M between the cover plate 23 and the top cap 11. Limit the movement of the drum 12 and the limit plate 14, first rotate the drive wheel 212 forward a little, then release the tension on the extraction rod 24 and let it rest on the cover plate 23.

[0058] The forward-rotating driving wheel 212 continues to make the second outer teeth 2211 on the outer side of the storage tube 221 perform an orbital motion along the inner teeth 121 on the inner side of the drum 12. When the next group of storage tubes 221 inside the drum 12 arrives below the first through hole 112, the axis of the first through hole 112 coincides with the axis of the second through hole 232, and the axis of the extraction rod 24 coincides with the axis of the channel 2213, so that the extraction rod 24 can be smoothly inserted into the channel 2213. Under the elastic force of the second spring 241, the extraction rod 24 moves downward, positioning the next group of storage tubes 221 below the first through hole 112, and the switching is completed.

[0059] Repeat sampling: Repeat the above steps to make the extraction tube 222 drop to the middle liquid level for sampling. Continue to repeat the above steps to make the extraction tube 222 drop to the low liquid level for sampling. Through the above operations, the device can complete the sampling of three different liquid levels, low, middle and high, in a relatively static operation, reducing variable penetration and ensuring the accuracy of the test results.

[0060] In summary, the present invention ensures the high stability and accuracy of the extraction component 22 during the switching process through the multiple engagement of the inner teeth 121 on the inner side of the drum 12 with the first outer teeth 211 on the outer side of the rotating rod 21 and the second outer teeth 2211 on the outer side of the storage tube 221. With the cooperation of the driving wheel 212 and the rotating ring 13, the operator can realize the revolution and rotation of the extraction component 22 through simple manual operation, ensuring that each switch can be accurately positioned to the specified liquid level, significantly improving the stability and reliability of the switching. In addition, the movable seat 223 in the storage tube 221 realizes the sampling of the extraction tube 222 through the synergistic effect of the first spring 224 and the second spring 241, thereby improving the accuracy and efficiency of the sampling. The overall design not only simplifies the operating steps and reduces human errors, but also ensures the accuracy and reliability of the test results, and is particularly suitable for cosmetics testing needs that require multi-point sampling.

[0061] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A cosmetic sampling and testing device, characterized in that: include, A switching unit (1) comprises a top cap (11), a rotating drum (12) arranged at the bottom of the top cap (11), a rotating ring (13) arranged at the bottom of the rotating drum (12), and a limiting plate (14) arranged at the bottom of the rotating ring (13); The detection unit (2) comprises a rotating rod (21) arranged inside the rotating drum (12), a plurality of extraction components (22) arranged around the rotating rod (21), a cover plate (23) arranged at the end of the extraction component (22), and an extraction rod (24) movably penetrating one side of the cover plate (23); The rotating drum (12) rotates itself to cause the extraction component (22) to revolve and switch to the next group; or the extraction component (22) rotates and rises and falls into the object to be detected (3).

2. The cosmetic sampling and testing device according to claim 1, characterized in that: The rotating drum (12) comprises inner teeth (121) arranged on the inner side thereof; The rotating rod (21) comprises a first outer tooth (211) arranged on the outer side thereof, and a driving wheel (212) which is movably arranged to penetrate the axis of the cover plate (23) and the top cap (11).

3. The cosmetic sampling and testing device according to claim 2, characterized in that: The extraction assembly (22) comprises a storage tube (221) arranged on the circumference of the rotating rod (21), and an extraction tube (222) arranged inside the storage tube (221).

4. The cosmetic sampling and testing device according to claim 3, characterized in that: The top cap (11) comprises a first central hole (111) penetrating the axis thereof, and a first through hole (112) disposed on one side of the end surface thereof; The cover plate (23) comprises a second central hole (231) penetrating the axis thereof, and a plurality of groups of second through holes (232) circumferentially arranged on the end surface thereof; The rotating ring (13) comprises a third central hole (131) penetrating the axis thereof, and a plurality of groups of third through holes (132) circumferentially arranged on the end surface thereof.

5. The cosmetic sampling and testing device according to claim 4, characterized in that: The cover plate (23) is movably sleeved on the end surfaces of the extraction component (22) and the rotating rod (21); The third through hole (132) is position-limitingly sleeved on the outside of the storage tube (221).

6. The cosmetic sampling and testing device according to claim 5, characterized in that: The storage tube (221) comprises a second outer tooth (2211) arranged on the outside thereof, a storage cavity (2212) arranged on the inside thereof, and a channel (2213) penetrating the end of the storage cavity (2212); The extraction assembly (22) further comprises a movable seat (223) which is sealingly sleeved on the inner side of the storage cavity (2212).

7. The cosmetic sampling and testing device according to claim 6, characterized in that: The movable seat (223) comprises a pressing portion (2231) arranged at an end portion thereof, and a receiving portion (2232) protruding from the other side of the pressing portion (2231); A first spring (224) is connected between the end surface of the storage cavity (2212) and the end surface of the extrusion portion (2231).

8. The cosmetic sampling and testing device according to claim 7, characterized in that: The first through hole (112) is protrudingly provided on the end surface of the top cap (11); The extraction rod (24) is movably disposed in the first through hole (112); A second spring (241) is connected between the extraction rod (24) and the first through hole (112).

9. The cosmetic sampling and testing device according to claim 8, characterized in that: The storage tube (221) further comprises a threaded groove (2214) arranged at the bottom thereof; The extraction tube (222) comprises a thread (2221) arranged on the outside thereof, and a plurality of groups of limiting grooves (2222) opened on the circumference of the thread (2221).

10. The cosmetic sampling and testing device according to claim 9, characterized in that: The limiting plate (14) comprises a limiting block (141) arranged on its circumference, and a limiting ring (142) arranged on its inner side; A group of blocking sheets (1421) are arranged on the inner side of the limiting ring (142); The thread (2221) is threadably connected to the thread groove (2214); The blocking piece (1421) is elastically snapped into the limiting groove (2222).

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