Skin oil detection device

Abstract

The present invention discloses a skin oil detection device, which relates to the field of skin detection technology, including a detection seat with an upper shell and a lower shell, and also including a film retracting device, an oil-absorbing film, a mounting tube, a mounting part, and a cutting part. The outer walls of the upper shell and the lower shell are provided with an escape port for the cutting part to pass freely. The part of the oil-absorbing film located outside the detection seat covers the escape port, and the width of the oil-absorbing film is larger than the inner diameter of the escape port. A cutting drive device is arranged in the mounting tube, and the cutting drive device is used to drive the mounting part to slide in the mounting tube. The present invention does not require manual means to attach the oil-absorbing film to the skin surface, and after sampling is completed, the area where the oil-absorbing film absorbs oil can be cut off, and the shape and size of the cut oil-absorbing film are fixed, so that the oil-absorbing film can be quantitatively analyzed for the amount of oil in the fixed area, and the whole operation is relatively convenient.

Description

Technical Field

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

[0002] The oil (i.e., sebum) secreted by the sebaceous glands of the skin has the functions of moisturizing the skin and hair, preventing the evaporation of skin moisture, inhibiting and killing bacteria on the skin surface, etc. By analyzing the sebum content on the skin surface, in addition to determining the skin type, the changes in sebum content can also be used to infer the body's metabolism and make corresponding adjustments. At the same time, abnormal sebum secretion or changes in secretion components will lead to the occurrence of many skin diseases (such as acne, etc.). In order to study the relationship between abnormal sebum and disease, it is also necessary to first determine the sebum content. Therefore, sebum content detection is of great significance. The measurement and quantitative analysis of human skin oil secretion is an important part of human health measurement and human beauty. There are mainly the following methods for detecting skin oil:

[0003] Sebumeter method: This is a world-recognized method for measuring sebum. The Sebumeter SM810 instrument is used, which works on the principle of oil spot photometry. The specific operation is to press a special matte tape 0.1 mm thick on the skin. After absorbing the oil on the skin, the tape will become translucent and the light transmittance will change accordingly. By measuring the light transmittance, the oil content of the skin can be measured.

[0004] Image analysis method: This method involves pressing the patch onto degreased skin. Since oil does not scatter light, when the air in the film's micropores is replaced by absorbed oil, the film becomes transparent, forming light-transmitting spots that coincide with the openings of hair follicles. These sebum spots are then quantified using specialized image analysis software.

[0005] VISIA Skin Image Analyzer: This device can capture the condition of facial skin under different light sources, and use professional skin information analysis software to quantify the oil points and degree of oil secretion, thereby evaluating the state of facial skin oil secretion.

[0006] At present, when using image analysis to quantitatively detect oil, the staff needs to use an oil-absorbing sticky microporous film (referred to as the oil-absorbing film in this application) and adsorb the oil-absorbing sticky microporous film on the skin, then remove the oil-absorbing sticky microporous film from the skin, place it under a light source, and use an image acquisition device to collect images, and finally use a computer and other equipment to analyze the images. In this process, since the oil-absorbing sticky microporous film requires the staff to cut it to a suitable size and manually attach the cut oil-absorbing sticky microporous film to the skin to collect samples of oil secretion, the operation is relatively inconvenient. Therefore, a detection device that can sample oil more quickly is needed. Summary of the invention

[0007] The purpose of the present invention is to provide a skin oil detection device to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A skin oil detection device comprises a detection seat having an upper shell and a lower shell, and further comprises:

[0010] A film retracting and unreeling device rotatably connected to the lower shell, the film retracting and unreeling device is used to wind the oil absorbing film, and to reel and unreel the oil absorbing film, and the outer walls of the upper shell and the lower shell are provided with film openings for the oil absorbing film to pass through;

[0011] A mounting tube connected to the inner cavity walls of the upper shell and the lower shell, a mounting portion is mounted in the mounting tube, the mounting portion slides freely in the mounting tube, a cutting portion is fixedly connected to one end surface of the mounting portion facing the film through-hole, an escape opening for the cutting portion to pass freely is opened on the outer walls of the upper shell and the lower shell, the portion of the oil-absorbing film located outside the detection seat covers the escape opening, and the width of the oil-absorbing film is greater than the inner diameter of the escape opening;

[0012] A cutting drive device is arranged in the installation tube, and the cutting drive device is used to drive the installation part to slide in the installation tube.

[0013] Through the above technical scheme, the side of the oil-absorbing film exposed to the detection seat is attached to the skin surface, and the film retracting device is used to reel up the oil-absorbing film, so that the oil-absorbing film moves on the skin surface, and the oil-absorbing film absorbs the oil on the skin surface. After the adsorption is completed, the mounting part is driven by the cutting drive device to move quickly in the mounting tube toward the avoidance port, so that the cutting part penetrates into the avoidance port and cuts the oil-absorbing film adsorbed with oil, and cuts the oil-absorbing film into a regular shape. Finally, the cut oil-absorbing film is placed under the light source, and an image acquisition device is used to acquire an image of the oil distribution. In this process, there is no need to manually attach the oil-absorbing film to the skin surface, and after sampling is completed, the area where the oil-absorbing film adsorbs the oil can be cut off, and the shape and size of the cut oil-absorbing film are fixed, so that the oil quantity of the fixed area of ​​the oil-absorbing film can be quantitatively analyzed, and the whole operation is relatively convenient.

[0014] Furthermore, the film reeling and unwinding device comprises a hollow shaft fixedly connected to the inner cavity wall of the upper shell and an installation shaft fixedly connected to the inner cavity wall of the lower shell. A winding roller is rotatably mounted on the periphery of the hollow shaft, and an unwinding roller is rotatably mounted on the periphery of the installation shaft. Both ends of the oil-absorbing film are respectively wound on the winding roller and the unwinding roller. A winding rotating mechanism for driving the winding roller to rotate is installed in the upper shell.

[0015] Through the above technical solution, the winding roller and the unwinding roller are respectively mounted on the hollow shaft and the mounting shaft and can rotate freely. The winding roller is driven by the winding rotating mechanism to rotate, so that the winding roller winds up the oil-absorbing film. When winding, the oil-absorbing film can drive the unwinding roller to rotate, thereby winding and unwinding the oil-absorbing film.

[0016] Furthermore, the inner walls of the upper shell and the lower shell are rotatably connected to two guide rollers, the two guide rollers are respectively located in the two film openings, and the oil-absorbing film bypasses the two guide rollers.

[0017] Through the above technical solution, the guide roller guides the oil absorbing film so that the oil absorbing film and the inner wall of the film hole will not be scratched, thus avoiding damage to the surface of the oil absorbing film and making the unwinding and winding process of the oil absorbing film smoother.

[0018] Furthermore, the winding rotation mechanism includes a winding motor installed on the inner wall of the upper shell, the output shaft of the winding motor is fixedly sleeved with a driving gear, the periphery of the winding roller is provided with a gear section, and the driving gear is meshed with the outside of the gear section.

[0019] Through the above technical solution, the output shaft of the winding motor drives the driving pulley to rotate, and the driving pulley and the gear section are meshed for transmission, thereby driving the winding roller to rotate, and the operation is relatively convenient.

[0020] Furthermore, the outer side wall of the upper shell is rotatably connected to a protective cover via a fixed shaft, and the protective cover rotates around the axial direction of the fixed shaft to fit the surface of the oil absorbing film. The surface of the protective cover is provided with a cutter avoidance groove corresponding to the avoidance opening, and a damping rubber sleeve is sleeved on the periphery of the hollow shaft, and the damping rubber sleeve is inserted into the middle hole of the winding roller and forms a sliding fit with the middle hole wall of the winding roller. A damping adjustment device is provided on the hollow shaft, and the damping adjustment device is used to expand the damping rubber sleeve during the flipping process of the protective cover, so as to increase the friction resistance between the outer surface of the damping rubber sleeve and the middle hole wall of the winding roller.

[0021] Through the above technical solution, when the oil-absorbing film collects oil on the skin surface, the oil-absorbing film will be rolled up and unrolled. At this time, the damping rubber sleeve is not expanded by the hollow shaft, so that the friction resistance between the outer surface of the damping rubber sleeve and the middle hole wall of the winding roller is small, so that the resistance of the oil-absorbing film in the rolling and unwinding process is small, avoiding excessive tension that causes the oil-absorbing film to break or deform.

[0022] Further, the damping adjustment device includes an expansion rod telescopically inserted into the middle hole of the hollow shaft, the expansion rod is coaxially fixed with an expansion part at one end away from the upper shell body, the outer diameter of the expansion part increases successively in the direction away from the expansion rod, a tapered hole for the expansion part to be engaged is provided in the hollow shaft, a plurality of strip-shaped notches passing through the tapered hole are provided at the periphery of the hollow shaft, the end of the expansion rod away from the expansion part is threadedly connected with the middle hole wall of the hollow shaft and is coaxially fixed with a gear shaft, the gear shaft passes through the outer wall of the upper shell body and slides and rotates freely, an installation bin is fixedly connected to the outer wall of the upper shell body, the interior of the installation bin is hollow and a sliding block is engaged therewith, the sliding block slides freely in the installation bin, the fixed shaft penetrates the installation bin and rotates freely, a first rack segment is provided on the sliding block, a gear portion meshing with the first rack segment is provided at the periphery of the fixed shaft, and a second rack segment meshing with the gear shaft is provided at one end of the sliding block away from the fixed shaft.

[0023] Through the above technical scheme, when the protective cover is flipped, it synchronously drives the fixed shaft to rotate. When the fixed shaft rotates, the gear part on the fixed shaft will mesh with the first rack segment for transmission, and drive the sliding block to slide in the installation bin. When sliding, the second rack segment will mesh with the gear shaft for transmission, so that the gear shaft drives the expansion rod to rotate, thereby causing the expansion rod to be threadedly screwed with the middle hole of the hollow shaft, so that the expansion rod moves toward the inner side of the upper shell body, thereby causing the expansion part to produce an extrusion force on the tapered hole of the hollow shaft, causing the hollow shaft to produce an elastic expansion deformation and causing the periphery of the hollow shaft to expand the damping rubber sleeve, and the periphery of the damping rubber sleeve is tightly against the middle hole wall of the winding roller, thereby increasing the resistance to the rotation of the winding roller, so that when the oil-absorbing film is cut, the oil-absorbing film will be in a tensioned state, so that the cutting part can smoothly cut the oil-absorbing film.

[0024] Furthermore, the cutting drive device includes a fixing plate coaxially fixed in the mounting tube, a sliding rod coaxially fixed to the end face of the mounting portion, the sliding rod penetrates the fixing plate and slides freely, one end of the sliding rod away from the mounting portion is threadedly sleeved with a limiting nut, an electromagnet is embedded in the end face of the fixing plate, a magnetic attraction portion is fixed to the end face of the limiting nut, and the magnetic attraction portion and the electromagnet form a magnetic fit.

[0025] Through the above technical solution, since the electromagnet generates magnetism when it is energized and generates magnetic attraction force on the magnetic attraction part, the magnetic attraction part drives the mounting part to move quickly toward the avoidance opening, so that the cutting part quickly passes through the avoidance opening and cuts the oil-absorbing film.

[0026] Furthermore, a return spring is wound around the periphery of the sliding rod, and two ends of the return spring in the elastic force direction elastically press against the magnetic attraction part and the electromagnet respectively.

[0027] Through the above technical solution, when the mounting part moves toward the avoidance opening, the magnetic attraction part will compress the reset spring, causing the reset spring to accumulate elastic potential energy. When the electromagnet is powered off and loses its magnetism, the elastic potential energy of the reset spring is released, thereby quickly driving the sliding rod to move in a direction away from the avoidance opening, so that the cutting part can be quickly retracted into the mounting tube.

[0028] Furthermore, a hollow cylinder is coaxially connected to one end face of the fixed plate facing the magnetic attraction part, the magnetic attraction part is engaged in the hollow cylinder and slides freely, a gas channel penetrating the end face of the mounting part is provided in the sliding rod, and an air hole connected to the gas channel is provided on the periphery of the sliding rod, and the air hole is located between the magnetic attraction part and the fixed plate.

[0029] Through the above technical solution, when the cutting part moves toward the avoidance opening, the magnetic part will slide in the hollow cylinder. When sliding, the magnetic part will squeeze the air in the hollow cylinder to the vent hole of the sliding rod, and then enter the gas channel through the vent hole. The air is then blown out from the mouth of the gas channel and produces a blowing effect on the cut oil-absorbing film, so that the cut oil-absorbing film disc can be quickly detached, which is convenient for collecting the cut oil-absorbing film.

[0030] Furthermore, the tip of the cutting portion faces the direction away from the avoidance opening, and the diameter of the inner wall of the cutting portion increases gradually in the direction approaching the mounting portion. The inner wall of the cutting portion and the end face of the mounting portion form a groove, and the groove is connected to the gas channel.

[0031] Through the above technical solution, the diameter of the inner wall of the cutting portion changes successively, so that the cut oil-absorbing film disc will not be stuck in the cutting portion, and the groove surrounded by the inner wall of the cutting portion and the end face of the mounting portion can store the air blown out by the gas channel. Then, when the oil-absorbing film is completely cut off, the air stored in the groove will block the oil-absorbing film, preventing the cut oil-absorbing film from entering the groove.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The present invention attaches the side of the oil-absorbing film exposed to the detection seat to the skin surface, and the film retracting device reels the oil-absorbing film so that the oil-absorbing film moves on the skin surface, and the oil-absorbing film absorbs the oil on the skin surface. After the adsorption is completed, the cutting drive device drives the mounting part to move quickly in the mounting tube toward the avoidance port, so that the cutting part penetrates into the avoidance port and cuts the oil-absorbing film adsorbed with oil, cuts the oil-absorbing film into a regular shape, and finally puts the cut oil-absorbing film under the light source, and uses the image acquisition device to collect the oil distribution image. In this process, there is no need to manually attach the oil-absorbing film to the skin surface, and after the sampling is completed, the area where the oil-absorbing film adsorbs the oil can be cut off, and the shape and size of the cut oil-absorbing film are fixed, so that the oil quantity of the fixed area of ​​the oil-absorbing film can be quantitatively analyzed, and the whole operation is relatively convenient;

[0034] 2. In the present invention, when the protective cover is turned over, it synchronously drives the fixed shaft to rotate. When the fixed shaft rotates, the gear part on the fixed shaft will mesh with the first rack segment for transmission, and drive the sliding block to slide in the installation bin. When sliding, the second rack segment will mesh with the gear shaft for transmission, so that the gear shaft drives the expansion rod to rotate, thereby causing the expansion rod to be threadedly screwed with the middle hole of the hollow shaft, so that the expansion rod moves toward the inner side of the upper shell body, thereby causing the expansion part to produce an extrusion force on the tapered hole of the hollow shaft, causing the hollow shaft to produce an elastic expansion deformation and causing the periphery of the hollow shaft to expand the damping rubber sleeve, and the periphery of the damping rubber sleeve is tightly against the middle hole wall of the winding roller, thereby increasing the resistance to the rotation of the winding roller, so that when the oil-absorbing film is cut, the oil-absorbing film will be in a tensioned state, so that the cutting part can smoothly cut the oil-absorbing film;

[0035] 3. In the present invention, when the cutting part moves toward the avoidance opening, the magnetic part will slide in the hollow cylinder. When sliding, the magnetic part squeezes the air in the hollow cylinder to the vent hole of the sliding rod, and then enters the gas channel through the vent hole. The air is then blown out from the mouth of the gas channel and produces a blowing effect on the cut oil absorption film, so that the cut oil absorption film disc can be quickly detached, which is convenient for collecting the cut oil absorption film. In addition, the diameter of the inner wall of the cutting part changes sequentially, so that the cut oil absorption film disc will not be stuck in the cutting part, and the groove surrounded by the inner wall of the cutting part and the end face of the mounting part can be used to store the air blown out from the gas channel. Then, when the oil absorption film is completely cut off, the air stored in the groove will block the oil absorption film, preventing the cut oil absorption film from entering the groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the overall structure of a skin oil detection device in the present invention;

[0037] Figure 2 for Figure 1 Schematic diagram of the positional relationship after the middle part of the structure is cut open;

[0038] Figure 3 for Figure 1 Schematic diagram of the explosion decomposition of the structure;

[0039] Figure 4 This is a schematic diagram of the structure after the lower housing is omitted in the present invention;

[0040] Figure 5 for Figure 4 The schematic diagram of the structure after the winding roller, unwinding roller and film are omitted;

[0041] Figure 6 for Figure 5 A schematic diagram of the structure from another perspective;

[0042] Figure 7 for Figure 5 The schematic diagram of the structure after the installation of the cylinder and the fixing plate is omitted;

[0043] Figure 8 for Figure 7 Schematic diagram of the positional relationship after the middle part of the structure is cut open;

[0044] Fig. 9 It is a schematic diagram of the structure after the installation cylinder, the magnetic attraction part and the sliding rod are assembled in the present invention;

[0045] Fig.10 for Fig. 9 Schematic diagram of the positional relationship after the middle part of the structure is cut open;

[0046] Fig.11 for Fig. 9 Schematic diagram of structural explosion decomposition;

[0047] Fig.12 It is a schematic diagram of the structure after the sliding rod and the mounting part are assembled in the present invention;

[0048] Fig.13 The figure is a schematic diagram of the positional relationship among the expansion rod, the sliding block and the fixed shaft after being assembled in the present invention.

[0049] In the figure, the reference numerals are as follows: 1, upper shell; 2, lower shell; 3, oil absorption film; 4, film penetration; 5, installation chamber; 6, fixed shaft; 7, cutter avoidance groove; 8, cushion strip; 9, protective cover; 10, installation cylinder; 11, guide roller; 12, winding roller; 13, winding motor; 14, unwinding roller; 15, sliding block; 16, gear part; 17, installation part; 18, gear segment; 19, driving gear; 2 0. Damping rubber sleeve; 21. Expansion part; 22. Magnetic part; 23. Strip notch; 24. Hollow shaft; 25. Limit nut; 26. Cutting part; 27. Gas channel; 28. Reset spring; 29. ​​Hollow cylinder; 30. Sliding rod; 31. Fixed plate; 32. Vent hole; 33. Electromagnet; 34. First rack segment; 35. Expansion rod; 36. Avoidance; 37. Second rack segment; 38. Gear shaft. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1 - Fig.13 The present invention provides a technical solution: a skin oil detection device, including a detection seat, the detection seat includes an upper shell 1 and a lower shell 2, and a handle portion is provided on the outer wall of the upper shell 1 and the lower shell 2 on the same side, and a battery compartment (not shown in the figure) is provided in the handle portion, and a control button (not shown in the figure) is installed on the outer wall of the handle portion, and a hollow shaft 24 (such as Figure 7As shown), the inner wall of the lower shell 2 is vertically fixed with a mounting shaft, the periphery of the hollow shaft 24 is rotatably fitted with a winding roller 12, the periphery of the mounting shaft is rotatably fitted with a reeling roller 14, the winding roller 12 and the reeling roller 14 are jointly wound with an oil-absorbing film 3, specifically, the two ends of the oil-absorbing film 3 are respectively wound on the winding roller 12 and the reeling roller 14, the outer walls of the upper shell 1 and the lower shell 2 are provided with a film through-hole 4 for the oil-absorbing film 3 to pass through, in addition, a winding motor 13 is installed on the inner wall of the upper shell 1, the output shaft of the winding motor 13 is fixedly sleeved with a driving gear 19, and the periphery of the winding roller 12 is provided with a gear section 18, the driving gear 19 is meshed with the gear segment 18. Since the battery is installed in the battery compartment, the battery is used to power the winding motor 13. In addition, the control button is used to control the power on and off of the winding motor 13. In this embodiment, the winding motor 13 only needs to be set to a fixed direction, that is, it is only necessary to wind the oil-absorbing film 3 on the unwinding roller 14 onto the winding roller 12. In this way, the direction of the winding motor 13 is fixed. The inner walls of the upper shell 1 and the lower shell 2 are rotatably connected to two guide rollers 11. The two guide rollers 11 are respectively located in the two film openings 4. The oil-absorbing film 3 bypasses the two guide rollers 11. Figure 4 As shown, the oil absorbing film 3 passes by the two guide rollers 11, and the portion of the oil absorbing film 3 passing by the guide rollers 11 is exposed to the upper shell 1 and the lower shell 2, and the surface of the oil absorbing film 3 is in contact with the surface of the upper shell 1 and the lower shell 2;

[0052] The upper shell 1 and the lower shell 2 are connected to a mounting tube 10 on one side of the inner cavity wall adjacent to the guide roller 11. The mounting tube 10 is mounted with a mounting portion 17 (such as Fig.10 As shown in the figure, the mounting portion 17 slides freely in the mounting tube 10, and the cutting portion 26 is fixedly connected to one end surface of the mounting portion 17 facing the film through-hole 4. The outer walls of the upper shell 1 and the lower shell 2 are provided with an escape opening 36 for the cutting portion 26 to pass freely. The escape opening 36 is in the shape of a circular hole. In addition, the portion of the oil-absorbing film 3 located outside the detection seat covers the escape opening 36, and the width of the oil-absorbing film 3 is greater than the inner diameter of the escape opening 36.

[0053] Two ear blocks are fixedly connected to the outer wall of the upper shell 1, and a fixed shaft 6 is commonly passed through the two ear blocks. A protective cover 9 is fixedly sleeved on the fixed shaft 6, so that the protective cover 9 is rotatably connected to the ear blocks, that is, the protective cover 9 is rotatably connected to the outer wall of the upper shell 1, and the protective cover 9 rotates around the axial direction of the fixed shaft 6 to fit the surface of the oil-absorbing film 3. In addition, a pad 8 is bonded to the surface of the protective cover 9, and the pad 8 is made of rubber material. When the protective cover 9 is turned over, the pad 8 contacts the surface of the upper shell 1 and the lower shell 2, so that the protective cover 9 will not continue to turn over and press the oil-absorbing film 3. A cutter avoidance groove 7 corresponding to the avoidance opening 36 is opened on the surface of the protective cover 9, and a damping rubber sleeve 20 is sleeved on the periphery of the hollow shaft 24. The damping rubber sleeve 20 is inserted into the middle hole of the winding roller 12 and forms a sliding fit with the middle hole wall of the winding roller 12;

[0054] A tension rod 35 (combined with a tension rod 36) is installed in the hole of the hollow shaft 24 in a telescopic manner. Figure 7 and Fig.13 ), the end of the expansion rod 35 away from the upper shell 1 is coaxially fixed with the expansion part 21, the outer diameter of the expansion part 21 increases successively in the direction away from the expansion rod 35, a tapered hole for the expansion part 21 to engage is opened in the hollow shaft 24, and a plurality of strip-shaped notches 23 penetrating the tapered hole are opened on the periphery of the hollow shaft 24, and the plurality of strip-shaped notches 23 are arranged in an axial array along the expansion rod 35, and the end of the expansion rod 35 away from the expansion part 21 is threadedly connected with the middle hole wall of the hollow shaft 24 and is coaxially fixed with a gear shaft 38, the gear shaft 38 passes through the outer wall of the upper shell 1 and can slide and rotate freely, the outer wall of the upper shell 1 is fixed with a mounting chamber 5, the interior of the mounting chamber 5 is hollow and is engaged with a sliding block 15, the sliding block 15 can slide freely in the mounting chamber 5, the fixed shaft 6 penetrates the mounting chamber 5 and can rotate freely, and a first rack segment 34 (such as Fig.13 As shown in FIG. 1 ), a gear portion 16 meshing with the first rack segment 34 is provided at the periphery of the fixed shaft 6, and a second rack segment 37 meshing with the gear shaft 38 is provided at one end of the sliding block 15 away from the fixed shaft 6;

[0055] A fixing plate 31 is coaxially fixed in the mounting tube 10, and a sliding rod 30 is coaxially fixed to the end face of the mounting portion 17. The sliding rod 30 penetrates the fixing plate 31 and slides freely. One end of the sliding rod 30 away from the mounting portion 17 is threadedly sleeved with a limiting nut 25. An electromagnet 33 is embedded in the end face of the fixing plate 31. A magnetic attraction portion 22 is fixed to the end face of the limiting nut 25. The magnetic attraction portion 22 and the electromagnet 33 form a magnetic force match. The magnetic attraction portion 22 is made of any one of iron, cobalt and nickel. In this way, when the electromagnet 33 is energized, The magnetic attraction part 22 will be generated with a magnetic attraction force, and then the magnetic attraction part 22 will be driven to move in the direction of the electromagnet 33. A return spring 28 is sleeved around the periphery of the sliding rod 30. The two ends of the return spring 28 in the elastic direction elastically press against the magnetic attraction part 22 and the electromagnet 33 respectively. In the initial state, the return spring 28 has a pre-pressure on the magnetic attraction part 22, so that the magnetic attraction part 22 moves in the direction away from the electromagnet 33, so that the mounting part 17 is in contact with the surface of the fixing plate 31 in the initial state.

[0056] The end surface of the fixed plate 31 facing the magnetic part 22 is coaxially connected with a hollow cylinder 29, the magnetic part 22 is engaged in the hollow cylinder 29 and slides freely, a gas passage 27 penetrating the end surface of the mounting part 17 is provided in the sliding rod 30, and a vent hole 32 communicating with the gas passage 27 is provided on the periphery of the sliding rod 30, the vent hole 32 is located between the magnetic part 22 and the fixed plate 31, the tip of the cutting part 26 faces away from the avoidance opening 36, and the inner wall diameter of the cutting part 26 increases in sequence toward the direction close to the mounting part 17 (such as Fig.12As shown, the inner wall diameter of the cutting portion 26 increases from right to left), the inner wall of the cutting portion 26 and the end surface of the mounting portion 17 form a groove, and the groove is connected to the gas channel 27.

[0057] Working principle of the present invention:

[0058] Collecting grease: The staff holds the handle of the detection seat and sticks the surface of the oil-absorbing film 3 exposed on the detection seat to the skin surface. The oil-absorbing film 3 can absorb the grease on the skin surface. After the absorption is completed, the staff takes away the detection seat;

[0059] Tension the oil absorbing film 3: flip the protective cover 9 until the protective cover 9 covers the oil absorbing film 3, and then place the detection seat on a table or a horizontal placement surface, and the protective cover 9 contacts the table or the horizontal placement surface, so that the detection seat is placed vertically with the handle facing upward. When the protective cover 9 is flipped, it synchronously drives the fixed shaft 6 to rotate. When the fixed shaft 6 rotates, the gear portion 16 on the fixed shaft 6 will mesh with the first rack segment 34 for transmission, and drive the sliding block 15 to slide in the installation chamber 5. When sliding, the second rack segment 37 will mesh with the gear shaft 38. The gear shaft 38 drives the expansion rod 35 to rotate, and then the expansion rod 35 and the middle hole of the hollow shaft 24 are screwed together, so that the expansion rod 35 moves toward the inner side of the upper shell 1, and then the expansion part 21 exerts an extrusion force on the tapered hole of the hollow shaft 24, so that the hollow shaft 24 is elastically expanded and the periphery of the hollow shaft 24 supports the damping rubber sleeve 20, and the periphery of the damping rubber sleeve 20 is tightly against the middle hole wall of the winding roller 12, so that the resistance to the rotation of the winding roller 12 is increased, and at this time the oil absorption film 3 is in a tensioned state;

[0060] Cutting the disc: Then turn on the power supply, so that the electromagnet 33 is energized and generates magnetism, so that the magnetic attraction part 22 is subjected to the magnetic attraction force of the electromagnet 33, thereby driving the magnetic attraction part 22 to move quickly in the direction of the avoidance opening 36, and driving the mounting part 17 and the cutting part 26 to move synchronously in the direction of the avoidance opening 36, the cutting part 26 passes through the avoidance opening 36 and cuts the surface of the oil absorbing film 3, and the tip of the cutting part 26 penetrates into the cutter avoidance groove 7 of the protective cover 9. During this process, the magnetic attraction part 22 will compress the reset spring 28, and the reset spring 28 accumulates elastic potential energy. At the same time, the magnetic attraction part 22 slides in the hollow cylinder 29, thereby squeezing the air in the hollow cylinder 29 into the vent hole 32, and then squeezed from the vent hole 32 into the gas channel 27, and then enters the groove, and blows air to the oil absorbing film 3, and waits for the oil absorbing film 3 to be cut by the cutting part 26 When the disc is in the form of a disc, part of the air in the groove will produce a blowing effect on the cut disc, so that the disc can be separated from the groove and avoid being stuck in the groove. After cutting, the power is turned off, so that the electromagnet 33 is powered off and loses its magnetism. At this time, the elastic potential energy of the reset spring 28 is released, and then the magnetic attraction part 22 is driven to move in the opposite direction. Since the disc is not stuck in the groove at this time, and since the inner diameter of the inner wall of the cutting part 26 is in a state of sequential change, when the magnetic attraction part 22 moves in a direction away from the fixed plate 31 and the air in the groove flows back into the hollow cylinder 29, the cut disc of the oil-absorbing film 3 will not be absorbed in the groove until the cutting part 26 is retracted into the installation cylinder 10. Then the staff takes the detection seat and manually reverses the protective cover 9. After the protective cover 9 is turned over, the staff takes out the disc of the oil-absorbing film 3 in the cutter avoidance groove 7;

[0061] Detection: Press the control button to energize the winding motor 13, and the output shaft of the winding motor 13 rotates, thereby driving the driving gear 19 to rotate. The driving gear 19 meshes with the gear segment 18 for transmission, thereby driving the winding roller 12 to rotate. When the winding roller 12 rotates, the oil-absorbing film 3 will be unwound from the unwinding roller 14 and wound on the winding roller 12, thereby causing the portion of the oil-absorbing film 3 where the circular hole is cut to move toward the inner side of the inner cavity of the detection seat, so that the unused portion of the oil-absorbing film 3 moves to the avoidance port 36, so that the next oil collection can be continued, and then the oil-absorbing film 3 disc is placed under the light source, and then the image acquisition device in the prior art (such as a CCD industrial camera) is used to collect the light-transmitting image of the oil-absorbing film 3 disc, and then the light-transmitting image is analyzed by a computer device to analyze the quantitative result of skin oil.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A skin oil detection device, comprising a detection base having an upper shell (1) and a lower shell (2), characterized in that: Also includes: A film retracting and unreeling device rotatably connected to the lower shell (2), the film retracting and unreeling device being used to wind up the oil absorbing film (3) and to reel in and unreel the oil absorbing film (3), the outer walls of the upper shell (1) and the lower shell (2) being provided with film through-holes (4) for the oil absorbing film (3) to pass through; A mounting tube (10) connected to the inner cavity walls of the upper shell (1) and the lower shell (2), a mounting portion (17) being mounted in the mounting tube (10), the mounting portion (17) being freely slidable in the mounting tube (10), a cutting portion (26) being fixedly connected to one end surface of the mounting portion (17) facing the film through-hole (4), an escape opening (36) for the cutting portion (26) to freely pass through being formed on the outer walls of the upper shell (1) and the lower shell (2), a portion of the oil absorbing film (3) located outside the detection seat covering the escape opening (36), and a width dimension of the oil absorbing film (3) being larger than an inner diameter dimension of the escape opening (36); a cutting drive device disposed in the mounting tube (10), the cutting drive device being used to drive the mounting portion (17) to slide in the mounting tube (10); The film retracting and unreeling device comprises a hollow shaft (24) fixedly connected to the inner wall of the upper shell (1) and a mounting shaft fixedly connected to the inner wall of the lower shell (2); a reeling roller (12) is rotatably mounted on the circumference of the hollow shaft (24); a reeling roller (14) is rotatably mounted on the circumference of the mounting shaft; two ends of the oil-absorbing film (3) are respectively wound on the reeling roller (12) and the reeling roller (14); a reeling rotating mechanism for driving the reeling roller (12) to rotate is installed in the upper shell (1); The outer wall of the upper shell (1) is rotatably connected to a protective cover (9) via a fixed shaft (6); the protective cover (9) rotates around the axial direction of the fixed shaft (6) to fit the surface of the oil absorbing film (3); a cutter avoidance groove (7) corresponding to the avoidance opening (36) is provided on the surface of the protective cover (9); a damping rubber sleeve (20) is sleeved on the periphery of the hollow shaft (24); the damping rubber sleeve (20) is inserted into the middle hole of the winding roller (12) and forms a sliding fit with the middle hole wall of the winding roller (12); a damping adjustment device is provided on the hollow shaft (24); the damping adjustment device is used to expand the damping rubber sleeve (20) during the turning process of the protective cover (9) so as to increase the friction resistance between the outer surface of the damping rubber sleeve (20) and the middle hole wall of the winding roller (12); The damping adjustment device comprises an expansion rod (35) which is telescopically inserted into the middle hole of the hollow shaft (24); the end of the expansion rod (35) which is away from the upper shell (1) is coaxially fixedly connected with an expansion part (21); the outer diameter of the expansion part (21) increases gradually in a direction away from the expansion rod (35); a tapered hole for the expansion part (21) to engage is provided in the hollow shaft (24); a plurality of strip-shaped notches (23) which penetrate the tapered hole are provided on the periphery of the hollow shaft (24); the end of the expansion rod (35) which is away from the expansion part (21) is threadedly connected to the middle hole wall of the hollow shaft (24) and is coaxially fixedly connected with a gear shaft (38); The gear shaft (38) passes through the outer wall of the upper shell (1) and is free to slide and rotate. The outer wall of the upper shell (1) is fixedly connected to a mounting chamber (5). The mounting chamber (5) is hollow inside and is engaged with a sliding block (15). The sliding block (15) is free to slide in the mounting chamber (5). The fixed shaft (6) passes through the mounting chamber (5) and is free to rotate. A first rack section (34) is provided on the sliding block (15). A gear portion (16) meshing with the first rack section (34) is provided on the periphery of the fixed shaft (6). A second rack section (37) meshing with the gear shaft (38) is provided on one end of the sliding block (15) away from the fixed shaft (6).

2. The skin oil detection device according to claim 1, characterized in that: The inner walls of the upper shell (1) and the lower shell (2) are rotatably connected to two guide rollers (11), the two guide rollers (11) are respectively located in the two film openings (4), and the oil-absorbing film (3) bypasses the two guide rollers (11).

3. The skin oil detection device according to claim 1, characterized in that: The winding rotation mechanism comprises a winding motor (13) mounted on the inner wall of the upper shell (1), the output shaft of the winding motor (13) being fixedly sleeved with a driving gear (19), the periphery of the winding roller (12) being provided with a gear section (18), and the driving gear (19) being externally meshed with the gear section (18).

4. The skin oil detection device according to claim 1, characterized in that: The cutting drive device comprises a fixing plate (31) coaxially fixedly connected to the mounting tube (10); a sliding rod (30) is coaxially fixedly connected to the end face of the mounting portion (17); the sliding rod (30) penetrates the fixing plate (31) and slides freely; one end of the sliding rod (30) away from the mounting portion (17) is threadedly sleeved with a limiting nut (25); an electromagnet (33) is embedded in the end face of the fixing plate (31); a magnetic attraction portion (22) is fixedly connected to the end face of the limiting nut (25); the magnetic attraction portion (22) and the electromagnet (33) form a magnetic fit.

5. The skin oil detection device according to claim 4, characterized in that: A return spring (28) is sleeved around the periphery of the sliding rod (30), and two ends of the return spring (28) in the elastic force direction elastically press against the magnetic attraction portion (22) and the electromagnet (33) respectively.

6. The skin oil detection device according to claim 5, characterized in that: A hollow cylinder (29) is coaxially connected to one end face of the fixing plate (31) facing the magnetic attraction portion (22); the magnetic attraction portion (22) is engaged in the hollow cylinder (29) and is free to slide; a gas passage (27) penetrating the end face of the mounting portion (17) is provided in the sliding rod (30); a vent hole (32) in communication with the gas passage (27) is provided on the periphery of the sliding rod (30); the vent hole (32) is located between the magnetic attraction portion (22) and the fixing plate (31).

7. The skin oil detection device according to claim 6, characterized in that: The tip of the cutting portion (26) faces the direction away from the avoidance opening (36), and the diameter of the inner wall of the cutting portion (26) increases gradually in the direction approaching the mounting portion (17). The inner wall of the cutting portion (26) and the end surface of the mounting portion (17) form a groove, and the groove is connected to the gas passage (27).

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