CN220231175U - Paper detection sample making device - Google Patents

Abstract

The utility model discloses a paper detection sample manufacturing device, which comprises a base, a collecting box, a paper supporting table and a cutting mechanism, wherein the paper supporting table is fixedly arranged on the base; the cutting mechanism comprises a cutter seat, a fixed cutter and a movable cutter, wherein the cutter seat is made of steel materials and is arranged on the side surface of the paper supporting table, the fixed cutter is arranged at the top of the cutter seat, the cutting edge of the fixed cutter is arranged along the horizontal direction and is flush with the upper surface of the paper supporting table, one end of the movable cutter is hinged with one end of the fixed cutter, the other end of the movable cutter is provided with a cutter handle, and the cutting edge of the movable cutter is attached to the cutting edge of the fixed cutter; the collecting box is detachably arranged on the base and is positioned on one side of the tool apron, a paper feeding strip-shaped hole and a magnet are arranged on the side surface of the collecting box, which is close to one side of the tool apron, the paper feeding strip-shaped hole is arranged along the horizontal direction and is communicated with the inner cavity of the collecting box, the paper feeding strip-shaped hole corresponds to the position of the fixed tool blade, and the magnet is positioned below the paper feeding strip-shaped hole and is in adsorption fit with the tool apron. The utility model can conveniently cut paper and collect paper samples obtained after cutting.

Description

Paper detection sample making device

Technical Field

The utility model relates to auxiliary equipment for paper detection, in particular to a paper detection sample manufacturing device.

Background

In the chemical detection project of paper, before entering chemical detection, the paper is subjected to physical segmentation and cutting, and paper samples with the same size are cut out, so that experimenters can conduct processing work before detection such as extraction, digestion, ashing and the like on the paper samples, the paper samples are enabled to be more suitable for the requirements of analysis instrument measurement after being processed, and the analysis speed, sensitivity and accuracy are improved.

At present, scissors or paper shredders are commonly used for cutting and trimming paper. When cutting paper by using scissors, the paper (especially the cardboard) can splash, the cut paper sample is more troublesome to collect, and the paper sample is easy to be polluted in the collecting process. Paper shredders are generally capable of cutting paper according to a predetermined size, and cannot be adjusted as required, and paper samples are generally available in a variety of different sizes according to the detection requirements, and therefore, paper shredders cannot be adapted to cut paper samples of different sizes.

Disclosure of Invention

The utility model aims to solve the problem of providing a paper detection sample manufacturing device which can conveniently cut paper and collect paper samples obtained after cutting.

In order to solve the technical problems, the utility model adopts the following technical scheme:

paper detects sample preparation device, its characterized in that: the paper supporting machine comprises a base, a collecting box, a paper supporting table and a cutting mechanism, wherein the paper supporting table is fixedly arranged on the base; the cutting mechanism comprises a cutter seat, a fixed cutter and a movable cutter, wherein the cutter seat is made of steel materials and is arranged on the side surface of the paper supporting table, the fixed cutter is arranged at the top of the cutter seat, the cutting edge of the fixed cutter is arranged in the horizontal direction and is flush with the upper surface of the paper supporting table, one end of the movable cutter is hinged with one end of the fixed cutter, the other end of the movable cutter is provided with a cutter handle, and the cutting edge of the movable cutter is attached to the cutting edge of the fixed cutter; the collecting box is detachably arranged on the base and is positioned on one side of the tool apron, a paper feeding strip-shaped hole and a magnet are arranged on the side surface of the collecting box, which is close to one side of the tool apron, the paper feeding strip-shaped hole is arranged along the horizontal direction and is communicated with the inner cavity of the collecting box, the paper feeding strip-shaped hole corresponds to the position of the cutting edge of the fixed tool, and the magnet is positioned below the paper feeding strip-shaped hole and is in adsorption fit with the tool apron.

When the paper is to be cut, the paper to be cut can be firstly placed on the upper surface of the paper supporting table, and the paper is cut into paper strips with the width according with the requirements of paper sample by using a cutting mechanism; then the collecting box is placed on one side of the cutter seat, and the positions of the paper feeding strip-shaped holes on the collecting box correspond to the positions of the cutting edges of the fixed cutter, and at the moment, the magnet is in adsorption fit with the cutter seat, so that dislocation of the collecting box can be avoided; then, placing the paper strip on the upper surface of the paper supporting table, pushing the paper strip into a paper feeding strip-shaped hole on the collecting box along the upper surface of the paper supporting table, and enabling the length of the part of the paper strip, which passes over the fixed knife edge, to meet the requirements of paper samples; then, the knife handle is manually held, the movable knife is driven to move down to the cutting edge of the fixed knife, the paper strip between the cutting edge of the movable knife and the cutting edge of the fixed knife is cut off, and the obtained paper sheet sample falls into the inner cavity of the collecting box.

Because the blade holder adopts the steel material to make, is equipped with magnet on the side that the collection box is close to blade holder one side, through magnet and the blade holder on the paper supporting bench side adsorb the cooperation, can make the collection box comparatively firmly adsorb on the side of paper supporting bench and be difficult for taking place to shift, easy dismounting when removing the collection box moreover.

In the preferred scheme, the paper detection sample manufacturing device further comprises a limiting mechanism, a guide strip-shaped hole perpendicular to the paper feeding strip-shaped hole is formed in the top surface of the collecting box, scale values are arranged on the top surface of the collecting box, and the scale values are sequentially arranged from small to large along the length direction of the guide strip-shaped hole; the limiting mechanism comprises a sliding seat and a paper blocking plate, the upper end of the sliding seat is arranged in the guide strip-shaped hole and can slide in the guide strip-shaped hole, the lower end of the sliding seat is positioned in the inner cavity of the collecting box, the paper blocking plate is connected with the lower end of the sliding seat, and the paper blocking plate is parallel to the side face of the collecting box, which is close to one side of the cutter seat. When the paper strip is to be cut, the sliding seat is moved to drive the paper blocking plate to move, so that the paper blocking plate moves to the scale of the length of the paper sample to be cut, and the position of the sliding seat is fixed; then, placing the paper strip on the upper surface of the paper supporting table, pushing the paper strip into a paper feeding strip-shaped hole on the collecting box along the upper surface of the paper supporting table until the front end of the paper strip is contacted with the paper blocking plate (the length of the part of the paper strip beyond the fixed knife edge meets the requirement of a paper sample at the moment); then, the paper strip is cut off by a cutting mechanism. The scale value on the top surface of the collecting box takes the position of the cutting edge of the fixed knife as a reference (namely, the scale value of the position of the cutting edge of the fixed knife is zero).

In a further preferred scheme, a paper supporting plate perpendicular to the paper blocking plate is arranged on the lower side edge of the paper blocking plate, the upper surface of the paper supporting plate is flush with the lower edge of the paper feeding strip-shaped hole, and the paper supporting plate is located between the paper blocking plate and the paper feeding strip-shaped hole. When the paper strip is pushed into the paper feeding strip-shaped hole on the collecting box until the front end of the paper strip is hung on the paper supporting plate and is contacted with the paper blocking plate, the front end of the paper strip can be supported through the arrangement, sagging of the front end of the paper strip can be avoided, and the size of a paper sample after cutting is more accurate.

In a further preferred scheme, the sliding seat comprises a sliding block and two screws, guide grooves are respectively arranged on two sides of the sliding block, two side edges of the guide strip-shaped holes are respectively embedded into the two guide grooves, two screw holes are formed in the upper surface of the sliding block, the lower ends of the two screw holes are respectively communicated with the two guide grooves, the two screws are respectively arranged in the two screw holes, the lower ends of the two screws are in tight contact with the top surface of the collecting box, and an adjusting handle is arranged at the upper end of each screw. When a detector needs to adjust the position of the paper blocking plate, the detector can pinch the adjusting handle to unscrew the screws, so that the lower ends of the two screws are not contacted with the top surface of the collecting box, and then the position of the adjusting slide block in the guide strip-shaped hole is adjusted by moving the slide block to adjust the position of the paper blocking plate; when the sliding block reaches a preset position, the adjusting handle is pinched by a hand to screw the screws, so that the lower ends of the two screws are tightly contacted with the top surface of the collecting box, and the positions of the sliding seat and the paper blocking plate are fixed.

In another further preferred scheme, the sliding seat comprises a U-shaped spring piece, an opening of the U-shaped spring piece faces upwards, and two elastic arms of the U-shaped spring piece are positioned in the guide strip-shaped hole; limiting blocks are respectively arranged at the upper ends of the two elastic arms of the U-shaped spring piece and are positioned at the upper side of the top surface of the collecting box; the lower end of the U-shaped spring piece is positioned in the inner cavity of the collecting box, and the paper blocking plate is connected with the lower end of the U-shaped spring piece. When a detector needs to adjust the position of the paper blocking plate, the U-shaped spring piece can be manually moved (the upper end of the U-shaped spring piece is pinched by hands at the moment to enable the two elastic arms of the U-shaped spring piece to be close to each other), and the position of the U-shaped spring piece in the guide strip-shaped hole is adjusted to adjust the position of the paper blocking plate; when the U-shaped spring piece reaches a preset position, the upper end of the U-shaped spring piece is released by hands, the two elastic arms of the U-shaped spring piece rebound, and the positions of the sliding seat and the paper blocking plate are fixed by means of friction force between the U-shaped spring piece and the edge of the guide strip-shaped hole.

In one embodiment, the magnet is embedded in the inner wall or the outer wall of the side surface of the collecting box close to the paper supporting table, or the magnet is fixed on the inner wall of the side surface of the collecting box close to the paper supporting table. The magnet is usually provided in a plurality of strips or sheets.

In a preferred embodiment, the collecting box is rectangular.

In a further preferred embodiment, the top surface of the collection box is transparent. The top surface of collecting the box sets up to transparent, is convenient for observe the position of the slip front end in the collecting box inner chamber, makes things convenient for the staff to adjust the position of slip (for example whether the slip front end contacts with the fender cardboard, if not contacted, makes things convenient for the staff to adjust the position of slip).

In a further preferred embodiment, the material of the collecting box is an antistatic material. Because the paper sheet sample is likely to generate static electricity in the cutting process, the collection box is made of the anti-static material, and the paper sheet sample can be prevented from being adsorbed on the inner wall of the collection box due to static electricity. The antistatic material can be an antistatic organic glass plate, an antistatic PVC plate, an antistatic PC plate, an antistatic PET plate or an antistatic nylon plate.

In a further preferred scheme, a sample outlet is arranged on the side face of the collecting box, an opening and closing door which can seal the sample outlet is arranged at the sample outlet, one side edge of the opening and closing door is hinged with one side edge of the sample outlet, and the other side edge of the opening and closing door is connected with the other side edge of the sample outlet through a detachable connecting structure. The detachable connecting structure can adopt a magnetic attraction component, a clamping structure, a snap fastener and the like.

Compared with the prior art, the utility model has the following advantages:

(1) The paper sample collecting device is simple in structure and convenient to carry, does not need an external power supply or a power device, can conveniently cut paper and collect paper samples obtained after cutting, and avoids the phenomenon that the paper samples splash or are polluted in the collecting process.

(2) According to the utility model, through the cooperation of the movement of the limiting mechanism and the scale value on the top surface of the collecting box, the size specification of paper sample cutting can be flexibly adjusted, and the method is suitable for cutting paper samples with different sizes.

Drawings

FIG. 1 is a schematic view of the structure of an embodiment 1 of the present utility model;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a schematic view of the spacing mechanism of FIG. 1;

FIG. 5 is a schematic perspective view of the collection box of FIG. 1;

fig. 6 is a schematic structural view of embodiment 2 of the present utility model.

Detailed Description

The utility model is described in detail below with reference to the drawings and the specific embodiments.

Example 1

As shown in fig. 1 to 5, the paper detection sample manufacturing device in the embodiment comprises a base 1, a collection box 2, a paper supporting table 3 and a cutting mechanism 4, wherein the paper supporting table 3 is fixedly arranged on the base 1; the cutting mechanism 4 comprises a cutter seat 41, a fixed cutter 42 and a movable cutter 43, wherein the cutter seat 41 is made of steel materials and is arranged on the side surface of the paper supporting table 3, the fixed cutter 42 is arranged at the top of the cutter seat 41, the cutting edge of the fixed cutter 42 is arranged in the horizontal direction and is flush with the upper surface of the paper supporting table 3, one end of the movable cutter 43 is hinged with one end of the fixed cutter 42, the other end of the movable cutter 43 is provided with a cutter handle 44, and the cutting edge of the movable cutter 43 is attached to the cutting edge of the fixed cutter 42; the collecting box 2 is detachably arranged on the base 1 and is positioned on one side of the tool apron 41, a paper feeding strip-shaped hole 21 and a magnet 22 are arranged on the side surface of the collecting box 2, which is close to one side of the tool apron 41, the paper feeding strip-shaped hole 21 is arranged along the horizontal direction and is communicated with the inner cavity of the collecting box 2, the paper feeding strip-shaped hole 21 corresponds to the cutting edge position of the fixed tool 42, and the magnet 22 is positioned below the paper feeding strip-shaped hole 21 and is in adsorption fit with the tool apron 41.

When the paper is to be cut, the paper to be cut can be firstly placed on the upper surface of the paper supporting table 3, and the paper is cut into paper strips with the width meeting the requirements of paper sample by using the cutting mechanism 4; then the collecting box 2 is placed on one side of the knife rest 41, the paper feeding strip-shaped hole 21 on the collecting box 2 corresponds to the knife edge of the fixed knife 42, and the magnet 22 is in adsorption fit with the knife rest 41 at the moment, so that the dislocation of the collecting box 2 can be avoided; then, the paper strip 6 is placed on the upper surface of the paper supporting table 3, the paper strip 6 is pushed into the paper feeding strip-shaped hole 21 on the collecting box 2 along the upper surface of the paper supporting table 3, and the length of the part of the paper strip 6, which passes over the cutting edge of the fixed knife 42, meets the requirements of a paper sample; then, the knife handle 44 is manually held, the movable knife 43 is driven to move down to the cutting edge of the fixed knife 42, the paper strip 6 between the cutting edge of the movable knife 43 and the cutting edge of the fixed knife 42 is cut off, and the obtained paper sample falls into the inner cavity of the collecting box 2.

Because blade holder 41 adopts the iron and steel material to make, is equipped with magnet 22 on the side of collecting box 2 near blade holder 41 one side, through the magnet 22 with hold in palm blade holder 41 adsorption fit on the paper platform 3 side, can make collecting box 2 comparatively firmly adsorb on the side of holding in palm paper platform 3 and be difficult for taking place to shift, easy dismounting when removing collecting box 2 moreover.

The paper detection sample manufacturing device further comprises a limiting mechanism 5, a guide strip-shaped hole 23 perpendicular to the paper feeding strip-shaped hole 21 is formed in the top surface of the collecting box 2, scale values 24 are arranged on the top surface of the collecting box 2, and the scale values 24 are sequentially arranged from small to large along the length direction of the guide strip-shaped hole 23; the limit mechanism 5 comprises a sliding seat 51 and a paper blocking plate 52, the upper end of the sliding seat 51 is arranged in the guide strip-shaped hole 23 and can slide in the guide strip-shaped hole 23, the lower end of the sliding seat 51 is positioned in the inner cavity of the collecting box 2, the paper blocking plate 52 is connected with the lower end of the sliding seat 51, and the paper blocking plate 52 is parallel to the side surface of the collecting box 2, which is close to the knife holder 41. When the paper strip is to be cut, the sliding seat 51 is moved to drive the paper blocking plate 52 to move, so that the paper blocking plate 52 moves to the scale of the length of the paper sample to be cut, and the position of the sliding seat 51 is fixed; then, the paper strip is placed on the upper surface of the paper supporting table 3, and is pushed into the paper feeding strip-shaped hole 21 on the collecting box 2 along the upper surface of the paper supporting table 3 until the front end of the paper strip is contacted with the paper blocking plate 52 (the length of the part of the paper strip passing over the cutting edge of the fixed knife 42 meets the requirement of a paper sample at the moment); then, the paper strip is cut by the cutting mechanism 4. The scale value 24 on the top surface of the collection box 2 is based on the position of the cutting edge of the fixed knife 42 (i.e. the scale value 24 of the position of the cutting edge of the fixed knife 42 is zero).

The lower side edge of the paper blocking plate 52 is provided with a paper supporting plate 53 perpendicular to the paper blocking plate 52, the upper surface of the paper supporting plate 53 is flush with the lower edge of the paper feeding strip-shaped hole 21, and the paper supporting plate 53 is positioned between the paper blocking plate 52 and the paper feeding strip-shaped hole 21. When the paper strip is pushed into the paper feeding strip hole 21 on the collecting box 2 until the front end of the paper strip is hung on the paper supporting plate 53 and is contacted with the paper blocking plate 52, the front end of the paper strip can be supported by the arrangement, so that sagging of the front end of the paper strip can be avoided, and the size of a paper sample after cutting is more accurate.

The sliding seat 51 comprises a sliding block 511 and two screws 512, wherein guide grooves 5111 are respectively arranged on two sides of the sliding block 511, two side edges of a guide strip-shaped hole 23 are respectively embedded into the two guide grooves 5111, two screw holes 5112 are arranged on the upper surface of the sliding block 511, the lower ends of the two screw holes 5112 are respectively communicated with the two guide grooves 5111, the two screws 512 are respectively arranged in the two screw holes 5112, the lower ends of the two screws 512 are in close contact with the top surface of the collecting box 2, and an adjusting handle 513 is arranged at the upper end of each screw 512. When the position of the paper blocking plate 52 is to be adjusted by a detector, the adjusting handle 513 can be pinched by hand to unscrew the screws 512, so that the lower ends of the two screws 512 are not contacted with the top surface of the collecting box 2, and then the position of the paper blocking plate 52 is adjusted by moving the sliding block 511 and adjusting the position of the sliding block 511 in the guide strip-shaped hole 23; when the slider 511 reaches a predetermined position, the adjustment handle 513 is pinched by a hand to tighten the screws 512 so that the lower ends of the two screws 512 are brought into close contact with the top surface of the collection box 2, fixing the positions of the slide block 51 and the paper blocking plate 52.

The magnet 22 is embedded in the outer wall of the side surface of the collecting box 2 near the paper supporting table 3. The magnet 22 is typically provided in a plurality of strips or sheets.

The collecting box 2 is rectangular in shape. The top surface of the collecting box 2 is transparent. The top surface of the collecting box 2 is transparent, so that the position of the front end of the paper strip in the inner cavity of the collecting box 2 can be conveniently observed, and a worker can conveniently adjust the position of the paper strip (for example, whether the front end of the paper strip is in contact with the paper blocking plate 52 or not, if the front end of the paper strip is not in contact with the paper blocking plate, the worker can conveniently adjust the position of the paper strip).

The collecting box 2 is made of antistatic materials. Because the paper sample is likely to generate static electricity in the cutting process, the collection box 2 is made of the anti-static material, and the paper sample can be prevented from being adsorbed on the inner wall of the collection box 2 due to static electricity.

The side of the collection box 2 is provided with a sample outlet 25, a door 27 which can seal the sample outlet 25 is arranged at the sample outlet 25, the upper side of the door 27 is hinged with the upper side of the sample outlet 25, and the lower side of the door 27 is connected with the lower side of the sample outlet 25 through a detachable connecting structure 26. The detachable connecting structure 26 adopts a magnetic attraction assembly and comprises a magnetic block 261 and a steel sheet 262, wherein the magnetic block 261 is arranged on the inner wall of the lower side edge of the opening and closing door 27, the steel sheet 262 is arranged on the lower side edge of the sample outlet 25, and the magnetic block 261 is in adsorption fit with the steel sheet 262.

Example 2

As shown in fig. 6, the paper detection sample preparation device in this embodiment differs from embodiment 1 in that:

the sliding seat 51 comprises a U-shaped spring piece 514, the opening of the U-shaped spring piece 514 faces upwards, and two elastic arms 5141 of the U-shaped spring piece 514 are positioned in the guide strip-shaped hole 23; the upper ends of the two elastic arms 5141 of the U-shaped spring piece 514 are respectively provided with a limiting block 515, and the limiting blocks 515 are positioned on the upper side of the top surface of the collecting box 2; the lower end of the U-shaped spring piece 514 is positioned in the inner cavity of the collecting box 2, and the paper blocking plate 52 is connected with the lower end of the U-shaped spring piece 514. When a detector wants to adjust the position of the paper blocking plate 52, the detector can manually move the U-shaped spring piece 514 (at the moment, the upper end of the U-shaped spring piece 514 is pinched by hands to enable the two elastic arms 5141 of the U-shaped spring piece 514 to be close to each other), and adjust the position of the U-shaped spring piece 514 in the guide strip-shaped hole 23 to adjust the position of the paper blocking plate 52; when the U-shaped spring piece 514 reaches a preset position, the upper end of the U-shaped spring piece 514 is released by hand, and the two elastic arms 5141 of the U-shaped spring piece 514 rebound, so that the positions of the sliding seat 51 and the paper blocking plate 52 are fixed by virtue of the friction force between the U-shaped spring piece 514 and the edge of the guide strip-shaped hole 23.

In addition, it should be noted that, in the specific embodiments described in the present specification, names of various parts and the like may be different, and all equivalent or simple changes of the structures, features and principles described in the conception of the present utility model are included in the protection scope of the present utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. Paper detects sample preparation device, its characterized in that: the paper supporting machine comprises a base, a collecting box, a paper supporting table and a cutting mechanism, wherein the paper supporting table is fixedly arranged on the base; the cutting mechanism comprises a cutter seat, a fixed cutter and a movable cutter, wherein the cutter seat is made of steel materials and is arranged on the side surface of the paper supporting table, the fixed cutter is arranged at the top of the cutter seat, the cutting edge of the fixed cutter is arranged in the horizontal direction and is flush with the upper surface of the paper supporting table, one end of the movable cutter is hinged with one end of the fixed cutter, the other end of the movable cutter is provided with a cutter handle, and the cutting edge of the movable cutter is attached to the cutting edge of the fixed cutter; the collecting box is detachably arranged on the base and is positioned on one side of the tool apron, a paper feeding strip-shaped hole and a magnet are arranged on the side surface of the collecting box, which is close to one side of the tool apron, the paper feeding strip-shaped hole is arranged along the horizontal direction and is communicated with the inner cavity of the collecting box, the paper feeding strip-shaped hole corresponds to the position of the cutting edge of the fixed tool, and the magnet is positioned below the paper feeding strip-shaped hole and is in adsorption fit with the tool apron.

2. The paper test sample preparation device according to claim 1, wherein: the paper feeding device comprises a paper feeding strip-shaped hole, a limiting mechanism and a collecting box, wherein the top surface of the collecting box is provided with a guide strip-shaped hole perpendicular to the paper feeding strip-shaped hole, and scale values are sequentially arranged along the length direction of the guide strip-shaped hole from small to large; the limiting mechanism comprises a sliding seat and a paper blocking plate, the upper end of the sliding seat is arranged in the guide strip-shaped hole and can slide in the guide strip-shaped hole, the lower end of the sliding seat is positioned in the inner cavity of the collecting box, the paper blocking plate is connected with the lower end of the sliding seat, and the paper blocking plate is parallel to the side face of the collecting box, which is close to one side of the cutter seat.

3. The paper detection sample making apparatus according to claim 2, wherein: the paper feeding device is characterized in that a paper supporting plate perpendicular to the paper blocking plate is arranged on the edge of the lower side of the paper blocking plate, the upper surface of the paper supporting plate is flush with the lower edge of the paper feeding strip-shaped hole, and the paper supporting plate is located between the paper blocking plate and the paper feeding strip-shaped hole.

4. The paper detection sample making apparatus according to claim 2, wherein: the sliding seat comprises a sliding block and two screws, wherein guide grooves are respectively formed in two sides of the sliding block, two side edges of each guide strip-shaped hole are respectively embedded into the corresponding guide grooves, two screw holes are formed in the upper surface of the sliding block, the lower ends of the two screw holes are respectively communicated with the corresponding guide grooves, the two screws are respectively arranged in the corresponding screw holes, the lower ends of the two screws are in tight contact with the top surface of the collecting box, and an adjusting handle is arranged at the upper end of each screw.

5. The paper detection sample making apparatus according to claim 2, wherein: the sliding seat comprises a U-shaped spring piece, an opening of the U-shaped spring piece faces upwards, and two elastic arms of the U-shaped spring piece are positioned in the guide strip-shaped hole; limiting blocks are respectively arranged at the upper ends of the two elastic arms of the U-shaped spring piece and are positioned at the upper side of the top surface of the collecting box; the lower end of the U-shaped spring piece is positioned in the inner cavity of the collecting box, and the paper blocking plate is connected with the lower end of the U-shaped spring piece.

6. The paper test sample preparation device according to claim 1, wherein: the magnet is embedded in the inner wall or the outer wall of the side surface of the collecting box, which is close to the paper supporting table, or the magnet is fixed on the inner wall of the side surface of the collecting box, which is close to the paper supporting table.

7. The paper test sample preparation device according to claim 1, wherein: the shape of the collecting box is cuboid.

8. The paper test sample preparation device according to claim 7, wherein: the top surface of the collecting box is transparent.

9. The paper test sample preparation device according to claim 7, wherein: the collecting box is made of antistatic materials.

10. The paper test sample preparation device according to claim 7, wherein: the side of the collection box is provided with a sample outlet, a sample outlet is provided with an opening and closing door which can seal the sample outlet, one side of the opening and closing door is hinged with one side of the sample outlet, and the other side of the opening and closing door is connected with the other side of the sample outlet through a detachable connecting structure.