Equipment for precisely cutting hair

Abstract

The utility model discloses a device for precisely cutting hair, which comprises a rack, an objective table and a cutting knife arranged above the objective table are arranged on the rack, the objective table is used for bearing the hair to be cut and can operably and automatically move back and forth so as to enable the hair to move to or be separated from the position under the cutting knife, and the cutting knife is arranged above the objective table. The hair cutting knife is arranged above the objective table and can operably and automatically move in the longitudinal direction and the transverse direction so as to transversely cut the hair. According to the automatic hair cutting device, direct manual participation is not needed in hair cutting, the purpose of automatic cutting is achieved, the influence of human objective factors is reduced, and the hair cutting accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hair poisoning (drug) identification, in particular to a device for accurately segmenting hair. Background Art

[0002] The retention property of poisons (drugs) in the hair shaft gives the hair matrix the advantages of easy collection, easy preservation, easy transportation, and stable target, and the property of keratin-rich protein to retain poisons gives hair samples the characteristics of reflecting long-range drug intake information, and can thus serve as an important supplement to conventional samples such as blood and urine. It has been widely used in the fields of forensic toxicology, clinical toxicology, environmental monitoring and doping detection, and has shown its unique evidentiary value.

[0003] The current hair analysis method for inferring medication patterns and medication times in practice still has defects such as insufficient accuracy and precision, which restricts its application scope and proof ability. The reasons for the errors are mainly reflected in two aspects. First, the method and strategy for inferring medication patterns and medication times. In current practice, fragment analysis of hair clusters is mostly carried out, and 2-3 cm length is mostly used as the interval division. Only fuzzy estimates of time periods can be made in units of "months", and the definite date of medication cannot be indicated. Second, errors are caused by the characteristics of the hair samples themselves. 1) There are individual differences in hair growth rate, which is in the range of 0.7 to 1.4 cm / month on average. When inferring the time of medication, the average growth rate is used to calculate the time, and the inferred time range can only be given based on the growth rate. 2) Hair growth is cyclical, and each hair of an individual is in a different growth cycle. In the growing hair, the drug moves toward the hair tip as the hair shaft grows, while in the resting hair, the drug remains in place with the hair. 3) During the sample collection process, operational errors are caused by human or some force majeure factors. Therefore, in actual work, there is an urgent need for a method that can accurately cut hair, so as to provide technical support for the inference of medication patterns and medication times in practice. Summary of the invention

[0004] In view of the above problems existing in the existing hair cutting, the present invention aims to provide a device for accurately segmenting hair which is simple to operate and has high cutting accuracy.

[0005] The specific technical solutions are as follows:

[0006] A device for accurately segmenting hair comprises: a frame, a loading platform and a cutting knife arranged above the loading platform, the loading platform is used to carry hair to be cut, and can be operated to automatically move forward and backward so that the hair moves to or away from directly below the cutting knife, and the hair cutting knife is arranged above the loading platform, and can be operated to automatically move longitudinally and transversely so as to perform transverse cutting on the hair.

[0007] Furthermore, as a preferred embodiment, the hair is adhered to the stage by means of tape.

[0008] Furthermore, as a preferred embodiment, the frame has a first guide rail and a first driving member, the bottom of the loading platform can be slidably installed on the first guide rail along its own length direction, and the first driving member is transmission-connected to the loading platform for driving the loading platform to slide on the first guide rail so as to move the loading platform back and forth.

[0009] Further, as a preferred embodiment, the frame further comprises a second guide rail, a mounting frame and a second driving member, the second guide rail is arranged in a transverse direction, the mounting frame is slidably arranged on the second guide rail, and the second driving member is drivingly connected to the mounting frame for driving the mounting frame to slide transversely on the second guide rail;

[0010] Among them, the mounting frame also has a third guide rail, a tool head bracket and a third driving member. The third guide rail is arranged in the longitudinal direction, the tool head bracket is slidably installed on the third guide rail, and the cutting knife is installed on the tool head bracket. The third driving member is transmission-connected with the tool head bracket for driving the cutting knife to slide longitudinally on the third guide rail.

[0011] Furthermore, as a preferred embodiment, the first driving member, the second driving member and the third driving member are all motor driving structures.

[0012] Furthermore, as a preferred embodiment, the top of the stage has a cutting glass plate.

[0013] Furthermore, as a preferred embodiment, the cutting knife is a utility knife blade.

[0014] Furthermore, as a preferred embodiment, the forward and backward moving direction of the loading platform is consistent with its own length direction, and the lateral moving direction of the cutting knife is consistent with the width direction of the loading platform.

[0015] A method for accurately segmenting hair, comprising any one of the above-mentioned devices for accurately segmenting hair, the method comprising:

[0016] Step S1: Take a single hair sample and wipe it horizontally with acetone, fix the adhesive surface of the tape upward on the foam board with thumbtacks, then stick the single hair on the tape, remove the tape and stick it to the designated sample area of ​​the stage;

[0017] Step S2: the stage carries the single hair and moves forward slowly and uniformly, the cutting knife descends, and when the cutting knife contacts the single hair, the cutting knife moves laterally at the same time to cut the single hair laterally, and the cutting knife is reset;

[0018] Step S3: Repeating step S2 repeatedly until a single hair is cut into multiple hair segments of equal length;

[0019] Step S4: the stage is retracted and reset, the cut hair segment sample is taken off the stage by holding the cell clamp, and a single hair segment is placed in a test tube for subsequent experimental operations.

[0020] Compared with the prior art, the above technical solution has the following positive effects:

[0021] (1) In the present invention, the hair is adhered to the stage by adhesive tape, and the stage carries the hair and automatically and slowly moves forward toward the bottom of the cutting knife. When the hair moves to the bottom of the cutting knife, the cutting knife automatically descends to the surface of the hair and automatically cuts it horizontally until the hair is cut into multiple hair segments of equal length. The stage retreats and resets, and the multiple hair segments are removed for subsequent experimental testing. Hair cutting does not require direct human intervention, thereby achieving the purpose of automatic cutting, reducing the influence of objective human factors, and improving the accuracy of hair cutting.

[0022] (2) In the present invention, the automatic advance and retreat speed of the stage can be controlled to control the length of a single-segment cutting of the hair, thereby achieving sub-millimeter (0.4mm-1mm) precision cutting of the hair. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a device for accurately segmenting hair according to the utility model;

[0024] Figure 2 It is a side view of a device for accurately segmenting hair according to the utility model;

[0025] In the accompanying drawings: 1, frame; 2, loading platform; 3, first driving member; 4, second driving member; 5, third driving member; 6, first guide rail; 7, second guide rail; 8, tool head bracket; 9, third guide rail; 10, mounting frame. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0027] Figure 1 This is a schematic diagram of the overall structure of a device for accurately segmenting hair according to the utility model. Figure 2This is a side view of a device for accurately segmenting hair according to the utility model. Figure 1 to Figure 2 As shown, a device for accurately segmenting hair according to a preferred embodiment is shown, comprising: a frame 1, a loading platform 2 and a cutting knife (not shown in the figure) arranged above the loading platform 2 are arranged on the frame 1, the loading platform 2 is used to carry the hair to be cut, and can be operated to automatically move forward and backward so that the hair moves to or away from the bottom of the cutting knife, and the hair cutting knife is arranged above the loading platform 2, and can be operated to automatically move longitudinally and transversely so as to cut the hair transversely.

[0028] In the present embodiment, the hair is adhered to the stage 2 by means of adhesive tape, and the stage 2 automatically and slowly moves forward with the hair under the cutting knife. When the hair moves to under the cutting knife, the cutting knife automatically descends to the surface of the hair and automatically cuts horizontally until the hair is cut into multiple hair segments of equal length. The stage 2 retreats and resets, and the multiple hair segments are removed for subsequent experimental testing. Hair cutting does not require direct human participation, thereby achieving the purpose of automated cutting, reducing the influence of objective human factors, and improving the accuracy of hair cutting.

[0029] In this embodiment, the automatic advance and retreat speed of the stage 2 can be controlled to control the single-segment cutting length of the hair, thereby achieving sub-millimeter (0.4mm-1mm) precise cutting of the hair.

[0030] Furthermore, as a preferred embodiment, the hair is adhered to the stage 2 by means of tape. Preferably, the tape can be a transparent tape or a non-transparent tape, and the material of the tape can be paper material or plastic material.

[0031] Furthermore, as a preferred embodiment, the frame 1 has a first guide rail 6 and a first drive member 3, the bottom of the loading platform 2 can be slidably installed on the first guide rail 6 along its own length direction, and the first drive member 3 is transmission-connected to the loading platform 2 for driving the loading platform 2 to slide on the first guide rail so as to move the loading platform 2 forward and backward.

[0032] Further, as a preferred embodiment, the frame 1 further comprises a second guide rail 7, a mounting frame 10 and a second driving member 4, the second guide rail 7 is arranged in a transverse direction, the mounting frame 10 is slidably arranged on the second guide rail 7, and the second driving member 4 is transmission-connected with the mounting frame 10, and is used to drive the mounting frame 10 to slide transversely on the second guide rail 7;

[0033] Among them, the mounting frame 10 also has a third guide rail 9, a tool head bracket 8 and a third driving member 5. The third guide rail 9 is arranged longitudinally, the tool head bracket 8 is slidably installed on the third guide rail 9, and a cutting knife is installed on the tool head bracket 8. The third driving member 5 is transmission-connected with the tool head bracket 8 for driving the cutting knife to slide longitudinally on the third guide rail 9.

[0034] Furthermore, as a preferred embodiment, the first driving member 3, the second driving member 4 and the third driving member 5 are all motor driving structures.

[0035] Preferably, the first driving member 3 includes an injection motor and an injection screw rotatably mounted on the frame 1, the axial direction of the injection screw is consistent with the guiding direction of the first track, the bottom thread of the stage 2 is installed on the outside of the injection screw, and the injection motor is transmission-connected to the injection screw for driving the injection screw to rotate so that the stage 2 slides back and forth on the first guide rail 6.

[0036] Specifically, the second driving member 4 includes a transverse motor and a transverse screw rod rotatably mounted on the frame 1, the mounting frame 10 is threadedly mounted on the outside of the transverse screw rod, and the transverse motor is transmission-connected to the transverse screw rod to move the mounting frame 10 laterally, thereby moving the cutting knife laterally.

[0037] More preferably, the third driving member 5 includes a vertical motor and a longitudinal screw rod rotatably mounted on the mounting frame 10, the cutter head bracket 8 is threadedly mounted on the outside of the longitudinal screw rod, and the vertical motor is transmission-connected to the longitudinal screw rod for driving the longitudinal screw rod to rotate so as to move the cutter head bracket 8 longitudinally, thereby moving the cutting knife longitudinally.

[0038] More preferably, the device further comprises an operation panel, which is electrically connected to the sample introduction motor, the vertical motor and the horizontal motor, and is used to control the direction and speed of the sample introduction motor, the vertical motor and the horizontal motor respectively.

[0039] Furthermore, as a preferred embodiment, the stage 2 has a cutting glass plate on the top, and the hair is adhered to the cutting glass plate by tape.

[0040] Further, as a preferred embodiment, the cutting knife is a utility knife blade.

[0041] Furthermore, as a preferred embodiment, the forward and backward moving direction of the stage 2 is consistent with its own length direction, and the lateral moving direction of the cutting knife is consistent with the width direction of the stage 2.

[0042] A method for accurately segmenting hair, comprising any one of the above-mentioned devices for accurately segmenting hair, the method comprising:

[0043] Step S1: Take a single hair sample and wipe it horizontally with acetone, fix the adhesive surface of the tape upward on the foam board with thumbtacks, then stick the single hair on the tape, remove the tape and stick it to the designated sample area of ​​the stage 2;

[0044] Step S2: the stage 2 carries the single hair and moves forward slowly and uniformly, the cutting knife descends, and when the cutting knife contacts the single hair, the cutting knife moves horizontally at the same time to cut the single hair horizontally, and the cutting knife is reset;

[0045] Step S3: Repeating step S2 repeatedly until a single hair is cut into multiple hair segments of equal length;

[0046] Step S4: the stage 2 is retracted and reset, and the cut hair segment sample is taken off the stage 2 by holding the cell clamp, and a single hair segment is placed in a test tube for subsequent experimental operations.

[0047] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for accurately segmenting hair, characterized in that: include: A frame is provided with a loading platform and a cutting knife arranged above the loading platform, the loading platform is used to carry the hair to be cut and can be operated to automatically move forward and backward so that the hair moves to or away from directly below the cutting knife, and the cutting knife is arranged above the loading platform and can be operated to automatically move longitudinally and transversely so as to cut the hair transversely.

2. The device for accurately segmenting hair according to claim 1, characterized in that: The hair is adhered to the stage by adhesive tape.

3. The device for accurately segmenting hair according to claim 2, characterized in that: The frame is provided with a first guide rail and a first driving member. The bottom of the loading platform can be slidably installed on the first guide rail along its own length direction. The first driving member is transmission-connected to the loading platform and is used to drive the loading platform to slide on the first guide rail so as to move the loading platform forward and backward.

4. The device for accurately segmenting hair according to claim 3, characterized in that: The frame also has a second guide rail, a mounting frame and a second driving member, the second guide rail is arranged in a transverse direction, the mounting frame is slidably arranged on the second guide rail, and the second driving member is drivingly connected to the mounting frame for driving the mounting frame to slide transversely on the second guide rail; Among them, the mounting frame also has a third guide rail, a tool head bracket and a third driving member. The third guide rail is arranged in the longitudinal direction, the tool head bracket is slidably installed on the third guide rail, and the cutting knife is installed on the tool head bracket. The third driving member is transmission-connected with the tool head bracket for driving the cutting knife to slide longitudinally on the third guide rail.

5. The device for accurately segmenting hair according to claim 4, characterized in that: The first driving member, the second driving member and the third driving member are all motor driving structures.

6. The device for accurately segmenting hair according to claim 2, characterized in that: The top of the stage has a cutting glass plate.

7. The device for accurately segmenting hair according to claim 2, characterized in that: The cutting knife is a utility knife blade.

8. The device for accurately segmenting hair according to claim 2, characterized in that: The forward and backward moving direction of the loading platform is consistent with the length direction of the loading platform, and the lateral moving direction of the cutting knife is consistent with the width direction of the loading platform.

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