Sampling device for shooting residues

Abstract

The utility model relates to the field of shooting residue sampling, and discloses a shooting residue sampling device which comprises a box body, a protective cover is arranged on the front side of the box body, an exhaust pipe is arranged on the right side of the box body, a movable plate is connected to the inner wall of the lower side of the box body in a sliding mode, and a driving motor is arranged at the top end of the box body. An output shaft of the driving motor penetrates through the top end of the box body, a cutting assembly is arranged at the bottom end of the output shaft of the driving motor, the cutting assembly comprises a moving block and a servo motor, a clamping assembly is arranged at the top end of a moving plate, and the clamping assembly comprises a moving strip. According to the sampling device, the clamping assembly and the pulling plate are used in cooperation, when shooting residues attached to cloth are sampled, the cloth can be rapidly clamped through the clamping assembly, unnecessary physical contact and disturbance are reduced, and therefore secondary pollution caused when the shooting residues attached to the cloth are sampled can be avoided; and the sampling complexity is reduced.

Description

Technical Field

[0001] The utility model relates to the field of sampling of gunshot residues, and particularly relates to a sampling device for gunshot residues. Background Art

[0002] Gunshot residues, such as gunpowder particles, metal debris, etc., can often reveal key information about a shooting incident, such as the shooting distance and the type of firearm. However, traditional methods for sampling gunshot residues often rely on manual operations, such as using tools like scrapers or cotton swabs to directly scrape samples from the surface of suspected shooting objects.

[0003] As a common carrier of gunshot residues, the processing of fabric is particularly crucial. Traditional fabric cutting methods, such as using scissors or mechanical blades, may cause the spread or damage of gunshot residues due to physical contact during the cutting process, further increasing the complexity of sampling. For this reason, a sampling device for gunshot residues is proposed to solve the above problems. Content of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a sampling device for gunshot residues, aiming to improve the problem of "the physical contact during the cutting process causes the spread or damage of gunshot residues, increasing the complexity of sampling" in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: A sampling device for gunshot residues includes a box body. A protective cover is arranged on the front side of the box body. An exhaust pipe is arranged on the right side of the box body. A moving plate is slidably connected to the inner wall of the lower side of the box body. A driving motor is arranged at the top of the box body. The output shaft of the driving motor penetrates through the top of the box body. A cutting component is arranged at the bottom end of the output shaft of the driving motor. The cutting component includes a moving block and a servo motor. A clamping component is arranged at the top of the moving plate. The clamping component includes a moving strip. The bottom end of the moving strip is slidably connected to the top of the moving plate. A pulling plate is slidably connected to the inner wall of the moving strip. A pressing block is fixedly connected to the top right side of the pulling plate.

[0006] As a further description of the above technical solution:

[0007] The left side of the top of the pressing block is set as an inclined surface. A connecting block is slidably connected to the top of the pressing block. A pressing plate is fixedly connected to the rear side of the connecting block. A fixing rod is slidably connected to the inner wall of the connecting block. The inner wall of the fixing rod is fixedly connected to the inner wall of the moving strip.

[0008] As a further description of the above technical solution:

[0009] The front top of the pressing plate is elastically connected to the moving strip through a compression spring. A bolt is threadedly connected to the right side of the moving strip. The bottom end of the bolt abuts against the top of the moving plate.

[0010] As a further description of the above technical solution:

[0011] The right side of the lower end of the connecting block is set as an inclined surface.

[0012] As a further description of the above technical solution:

[0013] There are two groups of the pull plates and the connecting blocks, and the two groups of the pull plates and the connecting blocks are symmetrically arranged with the center line of the moving bar as the axis of symmetry.

[0014] As a further description of the above technical solution:

[0015] There are two groups of the moving bars, and the two groups of the moving bars are symmetrically arranged with the center line of the moving plate as the axis of symmetry.

[0016] As a further description of the above technical solution:

[0017] The moving block is fixedly connected to the bottom end of the output shaft of the driving motor, the servo motor is fixedly connected to the left side of the moving block, the clamping assembly further includes a lead screw, the outer side of the lead screw is rotatably connected to the inner wall of the moving block, and the left end of the lead screw is fixedly connected to the right end of the output shaft of the servo motor.

[0018] As a further description of the above technical solution:

[0019] A slider is threadedly connected to the outer side of the lead screw, the slider is slidably connected to the inner wall of the moving block, and a laser cutting head is arranged at the bottom end of the slider.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, through the combined use of the clamping assembly and the pull plate, when sampling the shooting residues attached to the fabric, the clamping assembly can quickly clamp the fabric, reducing unnecessary physical contact and disturbance, so as to avoid secondary pollution when sampling the shooting residues attached to the fabric and reducing the complexity of sampling.

[0022] 2. In the utility model, through the combined use of the cutting assembly and the driving motor, when sampling and cutting the shooting residues attached to the fabric, the servo motor drives the lead screw to rotate, thereby driving the laser cutting head to move, so as to ensure the precise control of the sampling range and improve the efficiency and precision of the sampling operation. Description of the Drawings

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the overall device in the utility model;

[0024] Figure 2 It is an unfolded three-dimensional structural schematic diagram of the overall device in the utility model;

[0025] Figure 3 This is a schematic cross-sectional front view three-dimensional structure of the moving block in the present utility model;

[0026] Figure 4 This is a schematic exploded three-dimensional structure of the clamping assembly in the present utility model;

[0027] Figure 5 This is a schematic three-dimensional structure of the extrusion block and the connecting block in the present utility model.

[0028] Legend description:

[0029] 1. Box body; 2. Protective cover; 3. Moving plate; 31. Moving strip; 32. Pulling plate; 33. Extrusion block; 34. Connecting block; 35. Pressing plate; 36. Compression spring; 37. Bolt; 4. Driving motor; 41. Moving block; 42. Servo motor; 43. Lead screw; 44. Slide block; 45. Laser cutting head. Specific implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Referring to Figure 1 , Figure 2 and Figure 4 , an embodiment provided by the present utility model: A sampling device for gunshot residues includes a box body 1, which provides a closed working space for the entire sampling device to protect the internal components from external environmental interference. A protective cover 2 is provided on the front side of the box body 1, which is convenient for putting in and taking out the items to be sampled and for maintaining the inside. An exhaust pipe is provided on the right side of the box body 1, which is used to connect to an exhaust gas treatment device to discharge the gas that may be generated inside the box body 1. A moving plate 3 is slidably connected to the lower inner wall of the box body 1, which bears the clamping assembly and the items to be sampled. A driving motor 4 is provided at the top of the box body 1, which provides rotational power for the cutting assembly. The output shaft of the driving motor 4 penetrates the top of the box body 1, and a cutting assembly is provided at the bottom end of the output shaft of the driving motor 4. The cutting assembly includes a moving block 41 and a servo motor 42.

[0032] Further, a clamping assembly is provided at the top end of the moving plate 3. The clamping assembly includes a moving bar 31 which can adjust its position on the moving plate 3 to adapt to sampled objects of different sizes. By adjusting the distance between the two moving bars 31, items of different sizes can be clamped. The bottom end of the moving bar 31 is slidably connected to the top end of the moving plate 3, and a pulling plate 32 is slidably connected to the inner wall of the moving bar 31. By pulling the pulling plate 32, the extrusion block 33 can be driven to move, thereby driving the pressing plate 35 to clamp the sampled object. A right-side top end of the pulling plate 32 is fixedly connected to the extrusion block 33, which cooperates with the inclined surface on the right side of the lower end of the connecting block 34. When the pulling plate 32 drives the extrusion block 33 to move, the inclined surface of the extrusion block 33 pushes the connecting block 34 to move upward.

[0033] Referring to Figure 2 , Figure 4 and Figure 5 , a left-side top end of the extrusion block 33 is arranged as an inclined surface, and a connecting block 34 is slidably connected to the top end of the extrusion block 33. A right-side lower end of the connecting block 34 is arranged as an inclined surface. When pushed by the extrusion block 33, the connecting block 34 slides on the fixed rod, driving the pressing plate 35 to move upward. At this time, the sampled object can be placed between the pressing plate 35 and the moving plate 3 for clamping. A pressing plate 35 is fixedly connected to the rear side of the connecting block 34, and a rubber pad is arranged at the bottom end of the pressing plate 35. The pressing plate 35 clamps the sampled object to ensure the sampled object remains stable during the cutting process. A fixed rod is slidably connected to the inner wall of the connecting block 34 to improve the stability of the connecting block 34 during movement. The inner wall of the fixed rod is fixedly connected to the inner wall of the moving bar 31.

[0034] Further, the front-side top end of the pressing plate 35 and the moving bar 31 are elastically connected by a compression spring 36 to provide elastic pressure when clamping the sampled object, making the clamping more secure. A bolt 37 is threadedly connected to the right side of the moving bar 31, and the bottom end of the bolt 37 abuts against the top end of the moving plate 3. After the moving bar 31 is adjusted to the appropriate position, by tightening the bolt 37 so that its bottom end abuts against the top end of the moving plate 3, the position of the moving bar 31 can be fixed to prevent the moving bar 31 from moving during the sampling process. There are two sets of the pulling plate 32 and the connecting block 34, and the two sets of the pulling plate 32 and the connecting block 34 are symmetrically arranged with the center line of the moving bar 31 as the axis of symmetry, which can drive both ends of the pressing plate 35 to move. There are two sets of the moving bar 31, and the two sets of the moving bar 31 are symmetrically arranged with the center line of the moving plate 3 as the axis of symmetry. By pulling the two sets of the moving bar 31, the pressing plate 35 can be driven to move upward.

[0035] Referring to Figure 2 and Figure 3, the moving block 41 is fixedly connected to the bottom end of the output shaft of the driving motor 4. The driving motor 4 is fixedly connected to the left top end of the moving block 41 through the output shaft, driving the moving block 41 to rotate. The servo motor 42 is fixedly connected to the left side of the moving block 41. The clamping assembly further includes a lead screw 43 for driving the slider 44 to move, thereby adjusting the position of the laser cutting head 45 and changing the rotation radius of the laser cutting head 45. The outside of the lead screw 43 is rotatably connected to the inner wall of the moving block 41, and the left end of the lead screw 43 is fixedly connected to the right end of the output shaft of the servo motor 42, and the lead screw 43 is driven to rotate by the rotation of the servo motor 42.

[0036] Furthermore, a slider 44 is threadedly connected to the outside of the lead screw 43. The movement of the slider 44 can adjust the rotation radius of the laser cutting head 45. The slider 44 is slidably connected to the inner wall of the moving block 41. A laser cutting head 45 is provided at the bottom end of the slider 44. The cloth with shooting residues is cut by using laser technology, which has the advantages of high precision and small heat affected zone, and can ensure the accuracy and integrity of sampling. This technology is an existing technology, so it will not be elaborated here.

[0037] Working principle: When in use, when sampling is required, according to the size of the object to be sampled, first loosen the bolt 37 on the right side of the moving bar 31, and push the moving bar 31 to slide on the top of the moving plate 3. When the distance between the two moving bars 31 is suitable for the object to be sampled, tighten the bolt 37 so that the bottom end of the bolt 37 fits against the top of the moving plate 3 to fix the position of the moving bar 31.

[0038] Then, pull the pull plate 32 to drive the extrusion block 33 to move. Since the left side of the top end of the extrusion block 33 and the right side of the lower end of the connecting block 34 are both inclined surfaces, the movement of the extrusion block 33 will push the connecting block 34 to slide upward on the fixed rod, driving the pressing plate 35 to rise accordingly. At this time, the object to be sampled is placed between the pressing plate 35 and the moving plate 3. After loosening the pull plate 32, under the elastic action of the compression spring 36, the pressing plate 35 moves downward to clamp the object to be sampled.

[0039] At this time, start the servo motor 42. The output shaft of the servo motor 42 drives the lead screw 43 to rotate. The slider 44 threadedly connected to the outside of the lead screw 43 slides on the inner wall of the moving block 41. The movement of the slider 44 can adjust the rotation radius of the laser cutting head 45. At this time, start the driving motor 4 to drive the moving block 41 to rotate, so that the laser cutting head 45 cuts and samples the cloth.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sampling device for gunshot residues, comprising a box body (1), characterized in that: A protective cover (2) is provided on the front side of the box body (1). An exhaust pipe is provided on the right side of the box body (1). A moving plate (3) is slidably connected to the inner wall of the lower side of the box body (1). A driving motor (4) is provided at the top of the box body (1). The output shaft of the driving motor (4) penetrates the top of the box body (1). A cutting assembly is provided at the bottom end of the output shaft of the driving motor (4). The cutting assembly includes a moving block (41) and a servo motor (42). A clamping assembly is provided at the top of the moving plate (3). The clamping assembly includes a moving strip (31). The bottom end of the moving strip (31) is slidably connected to the top of the moving plate (3). A pulling plate (32) is slidably connected to the inner wall of the moving strip (31). A pressing block (33) is fixedly connected to the top right side of the pulling plate (32).

2. The sampling device for gunshot residue according to claim 1, wherein: The left side of the top of the pressing block (33) is provided with an inclined surface. A connecting block (34) is slidably connected to the top of the pressing block (33). A pressing plate (35) is fixedly connected to the rear side of the connecting block (34). A fixing rod is slidably connected to the inner wall of the connecting block (34). The inner wall of the fixing rod is fixedly connected to the inner wall of the moving strip (31).

3. The sampling device for gunshot residues according to claim 2, characterized in that: The top front side of the pressing plate (35) is elastically connected to the moving strip (31) through a compression spring (36). A bolt (37) is threadedly connected to the right side of the moving strip (31). The bottom end of the bolt (37) abuts against the top of the moving plate (3).

4. The sampling device for gunshot residue according to claim 2, characterized in that: The right side of the lower end of the connecting block (34) is provided with an inclined surface.

5. The sampling device for gunshot residues according to claim 2, characterized in that: There are two sets of the pulling plate (32) and the connecting block (34). The two sets of the pulling plate (32) and the connecting block (34) are symmetrically arranged with the center line of the moving strip (31) as the axis of symmetry.

6. The sampling device for gunshot residues according to claim 1, characterized in that: There are two sets of the moving strip (31). The two sets of the moving strip (31) are symmetrically arranged with the center line of the moving plate (3) as the axis of symmetry.

7. The sampling device for gunshot residues according to claim 1, characterized in that: The moving block (41) is fixedly connected to the bottom end of the output shaft of the driving motor (4). The servo motor (42) is fixedly connected to the left side of the moving block (41). The clamping assembly further includes a lead screw (43). The outer side of the lead screw (43) is rotatably connected to the inner wall of the moving block (41). The left end of the lead screw (43) is fixedly connected to the right end of the output shaft of the servo motor (42).

8. The sampling device for gunshot residues according to claim 7, characterized in that: A slider (44) is threadedly connected to the outer side of the lead screw (43). The slider (44) is slidably connected to the inner wall of the moving block (41). A laser cutting head (45) is provided at the bottom end of the slider (44).

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