Automatic sampling device for heat treatment production line

Abstract

The utility model provides an automatic sampling device for a heat treatment production line, which comprises a frame body, a conveying roller way, a centering mechanism and a cutting mechanism, and the conveying roller way is arranged on the frame body and is used for conveying materials; the centering mechanism is arranged on the frame body and located in the middle of the conveying roller way so as to be used for centering and positioning materials. The cutting mechanism is arranged on the frame body, is located at one end of the conveying roller way and is located at the downstream of the centering mechanism, the cutting mechanism comprises a cutting head, a sieve plate and a driving assembly, the sieve plate is arranged on the frame body and is located at the downstream end of the conveying roller way, and the driving assembly is arranged on the frame body and is located above the sieve plate; the cutting head is arranged on the driving assembly and moves and is positioned under the action of the driving assembly. The whole sampling process is directly completed on a heat treatment production line, hoisting through additional hoisting equipment is not needed, the hoisting time is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel production, and in particular to an automatic sampling device for a heat treatment production line. Background Art

[0002] In the existing production process of steel plate heat treatment production lines, when steel plates are produced from the heat treatment production line, they need to be sampled and tested to test whether the mechanical properties and metallographic structure of the batch of steel plates meet the design requirements. The existing sampled steel plates are generally set aside. For example, if the length of the standard plate is 6 meters, a plate of about 6.2 meters will be set aside, and the sample is cut out at a suitable position within 0.2 meters at one end of the plate. The steel plate is then cut to 6 meters using a shearing machine. The excess part cut off is waste and is recycled.

[0003] At present, the sampling equipment of the heat treatment production line is mostly produced in the mode of hydraulic shearing. When sampling in this way, the steel plate needs to be hoisted onto the hydraulic sampling shear and the plate needs to be cut by the hydraulic sampling shear. However, when cutting on the hydraulic sampling shear, it is impossible to directly cut out the sample whose external structure meets the inspection requirements on the steel plate. It needs to be processed by machining equipment. In addition, the sampling process requires the steel plate to be hoisted onto the hydraulic sampling shear for operation. The operation process is complicated, the time cost and collection cost are high, and the degree of automation is low. Moreover, for high-strength steel plates with a thickness of more than 12mm, the hydraulic sampling shear cannot cut the steel plate, which cannot meet the production needs.

[0004] In summary, there is an urgent need for an automatic sampling device for a heat treatment production line to solve or at least partially solve the problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide an automatic sampling device for a heat treatment production line, which aims to solve the problem that the existing hydraulic shear sampling needs to rely on hoisting equipment to hoist the hydraulic sampling shear and has a low degree of automation. The specific technical solution is as follows:

[0006] An automatic sampling device for a heat treatment production line comprises a frame, a conveyor roller, a centering mechanism and a cutting mechanism. The conveyor roller is arranged on the frame for conveying materials; the centering mechanism is arranged on the frame and is located in the middle of the conveyor roller for centering and positioning the materials; the cutting mechanism is arranged on the frame and is located at one end of the conveyor roller and downstream of the centering mechanism. The cutting mechanism comprises a cutting head, a sieve plate and a driving assembly. The sieve plate is arranged on the frame and is located at the downstream end of the conveyor roller. The driving assembly is arranged on the frame and is above the sieve plate. The cutting head is arranged on the driving assembly and moves and is positioned under the action of the driving assembly.

[0007] Preferably, the cutting head is a plasma cutting head, a laser cutting head or a flame cutting head.

[0008] Furthermore, the driving assembly includes a gantry mounted on the frame and movable along the length direction of the frame, a sliding frame mounted on the gantry and movable along the width direction of the frame, and a lifting frame mounted on the sliding frame and movable along the height direction of the frame. The cutting head is mounted on the lifting frame and arranged toward the screen plate.

[0009] Furthermore, the conveying roller includes a conveying roller, a driving chain, a driven chain and a first driving member. A plurality of conveying rollers are provided, and the plurality of conveying rollers are rotatably connected to the top of the frame. A plurality of driven chains are provided, and the plurality of conveying rollers are arranged at intervals along the conveying direction. One end of each conveying roller is coaxially connected to two parallel driven sprockets, and the corresponding two driven sprockets on adjacent conveying rollers are connected by a driven chain. A driving sprocket is provided on the first driving member, and the driving sprocket is connected to the driven sprocket on one of the conveying rollers through a driving chain. The first driving member is provided on the frame.

[0010] Furthermore, the centering mechanism includes a slide rail arranged on the frame, a positioning slider slidably arranged on the slide rail, a screw rod rotatably connected to the slide rail, and a second driving member for driving the screw rod to rotate. The second driving member is arranged at one end of the slide rail. Two positioning sliders are provided. Both positioning sliders are threadedly connected to the screw rod, and the rotation directions of the threaded connections are opposite. The two positioning sliders are driven away from or closer to each other by the rotation of the screw rod.

[0011] Furthermore, it also includes an inductive grating arranged upstream of the conveying roller, the inductive grating is arranged on the frame and located at the lower side of the conveying roller, and the inductive grating is located in the middle of two adjacent conveying rollers in the conveying roller, and there is a gap between the two conveying rollers, and the inductive grating is arranged upward through the gap.

[0012] Furthermore, guide plates are provided on both positioning sliders, and two guide plates are provided on each positioning slider, and the two guide plates are respectively arranged at the upstream and downstream ends of the positioning slider. The two guide plates located at the upstream end of the two positioning sliders are arranged in a trumpet shape, and the openings are facing the upstream end, and the two guide plates located at the downstream end of the two positioning sliders are arranged in a trumpet shape, and the openings are facing the downstream end.

[0013] Furthermore, a dust removal mechanism is provided on the frame, and the dust removal mechanism is located on one side of the frame and close to the cutting mechanism.

[0014] Furthermore, the dust removal mechanism includes a negative pressure generating component, a filter component and a connecting pipe. A collecting chamber is provided on the frame, and the collecting chamber is located below the screen plate. The negative pressure generating component and the filter component are both arranged on one side of the frame. One end of the connecting pipe is connected to the collecting chamber, and the other end of the connecting pipe is connected to the negative pressure generating component. The negative pressure generating component and the filter component are connected.

[0015] Furthermore, a sorting mechanism is provided on the gantry, and the sorting mechanism is slidably connected to the gantry. An electromagnet for adsorbing materials is installed on the sorting mechanism, and the electromagnet is arranged toward the sieve plate.

[0016] Application of the technical solution of the utility model has the following beneficial effects: the automatic sampling device of the heat treatment production line is arranged on the steel plate production line, and when the steel plate needs to be sampled, the steel plate is conveyed to the upstream end of the conveyor roller, and the conveyor roller conveys the steel plate to the downstream end of the conveyor roller, and during the conveying process, the steel plate is centered by the centering mechanism so that the middle position of the steel plate and the conveyor roller is aligned, and the conveyor roller continues to convey the steel plate so that the steel plate is conveyed to the screen plate at the downstream end of the conveying mechanism, and the steel plate is supported by the screen plate, and the end of the steel plate is cut by the cutting head in the cutting mechanism, and during cutting, the driving assembly on the cutting assembly drives the cutting head to move relative to the steel plate, cuts out the required outer contour of the sample, and realizes automatic sampling of steel plate detection. The entire sampling process is completed directly on the heat treatment production line, without the need for additional lifting equipment, saving lifting time and improving production efficiency. In addition, the steel plate is cut directly by the cutting head in the cutting assembly at the end of the conveyor roller, and the cut samples can be used directly without the need for additional machining, with high sampling efficiency and automation.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 This is one of the overall structural schematic diagrams of an automatic sampling device for a heat treatment production line of the utility model;

[0020] Figure 2 This is the second overall structural schematic diagram of an automatic sampling device for a heat treatment production line of the utility model;

[0021] Figure 3 It is a partial structural schematic diagram of a conveyor roller of an automatic sampling device for a heat treatment production line of the utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of a cutting assembly and a sorting mechanism of an automatic sampling device for a heat treatment production line of the utility model;

[0023] Among them, 1. frame; 11. collecting chamber; 2. conveying roller; 21. conveying roller; 22. driving chain; 23. driven chain; 24. first driving member; 25. driven sprocket; 26. driving sprocket; 3. centering mechanism; 31. slide rail; 32. positioning slider; 321. guide plate; 33. screw rod; 34. second driving member; 4. induction grating; 5. cutting mechanism; 51. cutting head; 52. sieve plate; 53. driving assembly; 531. gantry; 532. sliding frame; 533. lifting frame; 6. dust removal mechanism; 61. negative pressure generating assembly; 62. filtering assembly; 63. connecting pipe; 7. sorting mechanism; 71. electromagnet. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below, and preferred embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0026] Example:

[0027] See also Figure 1-Figure 4 The present embodiment provides an automatic sampling device for a heat treatment production line, comprising a frame 1, a conveyor roller 2, a centering mechanism 3 and a cutting mechanism 5. The conveyor roller 2 is arranged on the frame 1 for conveying materials; the centering mechanism 3 is arranged on the frame 1, and the centering mechanism 3 is located in the middle of the conveyor roller 2, so as to center and position the materials; the cutting mechanism 5 is arranged on the frame 1, and the cutting mechanism 5 is located at one end of the conveyor roller 2 and downstream of the centering mechanism 3. The cutting mechanism 5 comprises a cutting head 51, a sieve plate 52 and a driving assembly 53. The sieve plate 52 is arranged on the frame 1 and is located at the downstream end of the conveyor roller 2. The driving assembly 53 is arranged on the frame 1 and is above the sieve plate 52. The cutting head 51 is arranged on the driving assembly 53 and moves and is positioned under the action of the driving assembly 53.

[0028] It can be understood that the steel plate is transported from other equipment to the upstream end of the conveyor roller 2, and the conveyor roller 2 transports the steel plate to the downstream end of the conveyor roller 2. During the transportation process, the steel plate is centered by the centering mechanism 3 so that the steel plate is aligned with the middle position of the conveyor roller 2. The conveyor roller 2 continues to transport the steel plate so that the steel plate is transported to the screen plate 52 at the downstream end of the conveying mechanism. The steel plate is supported by the screen plate 52, and the end of the steel plate is cut by the cutting head 51 in the cutting mechanism 5. During cutting, the driving assembly 53 on the cutting assembly drives the cutting head 51 to move relative to the steel plate to cut out the required external contour of the sample, thereby realizing automatic sampling of steel plate detection.

[0029] Preferably, the cutting head 51 is a plasma cutting head, and the steel plate is cut by the plasma cutting head. During the cutting process, the driving component 53 first drives the plasma cutting head to move along the height direction of the frame 1, so that the head of the plasma cutting head is close to the steel plate, and the plasma cutting head is started to work to cut the steel plate. During the cutting process, the driving component 53 drives the plasma cutting head to move horizontally along a predetermined route to cut out a sample on the steel plate. During the cutting process, the molten iron blown out by the plasma cutting head can smoothly pass through the sieve plate 52 to prevent the frame 1 from being damaged during cutting by the plasma cutting machine. In other embodiments, the cutting head 51 can also be a laser cutting head or a flame cutting head. For thin plates, the laser cutting head is used for cutting faster and consumes less energy, but the investment cost of the laser cutting head equipment is relatively high. When the flame cutting head is used for cutting, it is suitable for thick plate cutting, but the outer contour of the cut pattern is not neat, and it needs to be processed later before it can be used.

[0030] Furthermore, the driving assembly 53 includes a gantry 531 disposed on the frame 1 and movable along the length direction of the frame 1, a sliding frame 532 disposed on the gantry 531 and movable along the width direction of the frame 1, and a lifting frame 533 disposed on the sliding frame 532 and movable along the height direction of the frame 1. The cutting head 51 is disposed on the lifting frame 533 and arranged toward the screen plate 52. The two ends of the gantry 531 are connected to the frame 1 through rails. The gantry 531 slides along the rails, driving the sliding frame 532, the lifting frame 533 and the cutting head 51 to move along the length direction of the frame 1. During the movement, the gantry 531 can change the moving direction and the corresponding moving distance at any time. The sliding frame 532 is slidably connected to the gantry 531 through the slide rail 31. The sliding frame 532 slides along the slide rail 31, driving the lifting frame 533 and the cutting head 51 to move along the width direction of the frame 1. The lifting frame 533 drives the cutting head 51 to move along the height direction of the frame 1, so that the cutting head 51 is close to or away from the steel plate to be cut on the frame 1. The movements in the three directions are superimposed, so as to realize the cutting of the required sample and cut out the required outer contour of the sample.

[0031] Furthermore, the conveying roller 2 includes a conveying roller 21, a driving chain 22, a driven chain 23 and a first driving member 24. A plurality of conveying rollers 21 are provided, and the plurality of conveying rollers 21 are rotatably connected to the top of the frame 1. A plurality of driven chains 23 are provided, and the plurality of conveying rollers 21 are arranged at intervals along the conveying direction. One end of each conveying roller 21 is coaxially connected to two parallel driven sprockets 25, and the corresponding two driven sprockets 25 on adjacent conveying rollers 21 are connected through the driven chain 23. A driving sprocket 26 is provided on the first driving member 24, and the driving sprocket 26 is connected to the driven sprocket 25 on the first conveying roller 21 at the upstream end through a driving chain. The first driving member 24 is provided on the frame 1 and is located below the conveying roller 2. The conveying roller 21 is installed on the top of the frame 1 through bearings and bearing seats, and multiple conveying rollers 21 are evenly arranged along the length direction of the frame 1. When the first driving member 24 drives the driving sprocket 26 to rotate, the driving sprocket 26 drives the first conveying roller 21 at the upstream end of the conveying roller 2 to rotate, and when the conveying roller 21 rotates, it drives the other conveying rollers 21 to rotate through the driven sprocket 25 and the driven chain 23, so as to realize the conveying of the steel plate along the length direction of the frame 1. In this embodiment, the first driving member 24 is a motor, and in other embodiments, the first driving member 24 can also be a hydraulic motor, a micro internal combustion engine or other power components that can provide power.

[0032] Further, the centering mechanism 3 includes a slide rail 31 arranged on the frame 1, a positioning slider 32 slidably arranged on the slide rail 31, a screw rod 33 rotatably connected to the slide rail 31, and a second driving member 34 for driving the screw rod 33 to rotate. The second driving member 34 is arranged at one end of the slide rail 31. Two positioning sliders 32 are provided. Both positioning sliders 32 are threadedly connected to the screw rod 33, and the rotation direction of the threaded connection is opposite. The two positioning sliders 32 are driven to move away from or close to each other by the screw rod 33. When the steel plate is transported from the upstream end of the conveyor roller 2, the steel plate may not be in the middle of the conveyor roller 2. When the steel plate moves to the centering mechanism 3, the screw rod 33 is driven to rotate by the second driving member 34, so that the two positioning sliders 32 are close to each other. During the movement, the two positioning sliders 32 push the steel plate to the middle of the conveyor roller 2, so that the central axis of the steel plate is aligned with the central axis of the conveyor roller 2, preparing for subsequent operations and facilitating subsequent cutting operations. In this embodiment, the second driving member 34 is a driving motor with coding.

[0033] Furthermore, it also includes a sensing grating 4 arranged upstream of the conveying roller 2. The sensing grating 4 is arranged on the frame 1 and located at the lower side of the conveying roller 2. The sensing grating 4 is located in the middle of two adjacent conveying rollers 21 in the conveying roller 2, and there is a gap between the two conveying rollers 21. The sensing grating 4 is arranged upward through the gap. The sensing grating 4 is located in front of the centering mechanism 3. When the steel plate reaches the position of the sensing grating 4, the sensing grating 4 calibrates the zero position of the steel plate. The sensing grating 4 is electrically connected to the driving motor with coding, and the distance that the steel plate continues to move forward is controlled by controlling the number of rotations of the driving motor, so that one end of the steel plate is just moved below the cutting head 51 and is located above the screen plate 52, so that the cutting head 51 can cut the steel plate.

[0034] Furthermore, guide plates 321 are provided on both positioning sliders 32, and two guide plates 321 are provided on each positioning slider 32. The two guide plates 321 are respectively provided at the upstream and downstream ends of the positioning slider 32. The two guide plates 321 located at the upstream end of the two positioning sliders 32 are provided in a trumpet shape, and the openings are facing the upstream end. The two guide plates 321 located at the downstream end of the two positioning sliders 32 are provided in a trumpet shape, and the openings are facing the downstream end. When the steel plate is transported from the upstream end of the conveyor roller 2 to the downstream end of the conveyor roller 2, the steel plate is centered by the centering mechanism 3. During the centering process, the guide plate 321 first contacts the steel plate and guides the steel plate to correct the position of the steel plate to prevent the steel plate from directly colliding with the positioning slider 32 of the centering mechanism 3 and causing damage to the positioning slider 32 or the steel plate.

[0035] Furthermore, the frame 1 is also provided with a dust removal mechanism 6, which is located on one side of the frame 1 and close to the cutting mechanism 5. The dust removal mechanism 6 includes a negative pressure generating assembly 61, a filter assembly 62 and a connecting pipe 63. The frame 1 is provided with a collecting chamber 11, which is located below the sieve plate 52. The negative pressure generating assembly 61 and the filter assembly 62 are both arranged on one side of the frame 1. One end of the connecting pipe 63 is connected to the collecting chamber 11, and the other end of the connecting pipe 63 is connected to the negative pressure generating assembly 61. The negative pressure generating assembly 61 is connected to the filter assembly 62. When cutting the steel plate, the negative pressure generating assembly 61 works to generate negative pressure in the collecting chamber 11, so that the smoke and exhaust gas generated by the cutting pass through the sieve plate 52 and are sucked into the collecting chamber 11, and are successively connected to the connecting pipe 63, the negative pressure generating assembly 61 and the boiler assembly, so that the smoke and exhaust gas generated by the cutting are filtered through the filter assembly 62. It improves the cleanliness of on-site construction, prevents smoke and exhaust gas generated by cutting from polluting the environment, and reduces the harm caused to operators by smoke and exhaust gas.

[0036] Furthermore, a sorting mechanism 7 is provided on the gantry 531, and the sorting mechanism 7 is slidably connected to the gantry 531. An electromagnet 71 for adsorbing materials is installed on the sorting mechanism 7, and the electromagnet 71 is arranged toward the sieve plate 52. After the sample is cut, the sample is sucked by the magnetic suction piece on the sorting mechanism 7, and the sample is moved to the required position by the gantry 531, so as to be convenient for taking in the later processing.

[0037] The working principle of the technical solution of the utility model is: when it is necessary to sample the steel plate, the steel plate is transported from the upstream end of the conveyor roller 2 to the downstream end of the conveyor roller 2 through the conveyor roller 2. When it is transported to the sensing grating 4, the sensing grating 4 calibrates the zero position of the steel plate, and controls the driving motor in the first driving mechanism to run a fixed number of circles, so that the moving distance of the steel plate to the downstream end of the roller is the set distance. When the steel plate moves to the middle of the conveyor roller 2, the steel plate is guided by the guide plate 321, and the steel plate is centered. Under the action of mechanism 3, the steel plate is centered so that the steel plate is located in the middle of the conveyor roller 2. When the steel plate is centered and the downstream end of the steel plate moves to the bottom of the cutting head 51 and is located above the sieve plate 52, the driving component 53 drives the cutting head 51 to cut the steel plate. The smoke and exhaust gas generated during the cutting process pass through the sieve plate 52, the collection chamber 11, the connecting pipe 63, the negative pressure generating component 61 and the filter component 62 in sequence under the action of the negative pressure generating component 61, and the smoke and exhaust gas are processed by the filter component 62. The entire operation process does not require hoisting and can be completed without manual intervention.

[0038] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic sampling device for a heat treatment production line, characterized in that: It comprises a frame (1), a conveying roller (2), a centering mechanism (3) and a cutting mechanism (5). The conveying roller (2) is arranged on the frame (1) to convey materials; The centering mechanism (3) is arranged on the frame (1), and the centering mechanism (3) is located in the middle of the conveying roller (2) to be used for centering and positioning the material; The cutting mechanism (5) is arranged on the frame (1), and the cutting mechanism (5) is located at one end of the conveying roller (2) and downstream of the centering mechanism (3). The cutting mechanism (5) comprises a cutting head (51), a sieve plate (52) and a driving component (53). The sieve plate (52) is arranged on the frame (1) and is located at the downstream end of the conveying roller (2). The driving component (53) is arranged on the frame (1) and is above the sieve plate (52). The cutting head (51) is arranged on the driving component (53) and is moved and positioned under the action of the driving component (53).

2. The automatic sampling device for a heat treatment production line according to claim 1, characterized in that: The cutting head (51) is a plasma cutting head, a laser cutting head or a flame cutting head.

3. The automatic sampling device for a heat treatment production line according to claim 1, characterized in that: The driving assembly (53) comprises a gantry (531) arranged on the frame (1) and movable along the length direction of the frame (1), a sliding frame (532) arranged on the gantry (531) and movable along the width direction of the frame (1), and a lifting frame (533) arranged on the sliding frame (532) and movable along the height direction of the frame (1); the cutting head (51) is arranged on the lifting frame (533) and is disposed toward the screen plate (52).

4. The automatic sampling device for a heat treatment production line according to claim 1, characterized in that: The conveying roller (2) comprises a conveying roller (21), a driving chain (22), a driven chain (23) and a first driving member (24). A plurality of conveying rollers (21) are provided, and the plurality of conveying rollers (21) are rotatably connected to the top of the frame (1). A plurality of driven chains (23) are provided, and the plurality of conveying rollers (21) are arranged at intervals along the conveying direction. One end of each conveying roller (21) is coaxially connected to two parallel driven sprockets (25), and the corresponding two driven sprockets (25) on adjacent conveying rollers (21) are connected through the driven chain (23). The first driving member (24) is provided with a driving sprocket (26), and the driving sprocket (26) is connected to the driven sprocket (25) on one of the conveying rollers (21) through a driving chain. The first driving member (24) is provided on the frame (1).

5. The automatic sampling device for a heat treatment production line according to claim 1, characterized in that: The centering mechanism (3) comprises a slide rail (31) arranged on the frame (1), a positioning slider (32) slidably arranged on the slide rail (31), a screw rod (33) rotatably connected to the slide rail (31), and a second driving member (34) for driving the screw rod (33) to rotate, wherein the second driving member (34) is arranged at one end of the slide rail (31), two positioning sliders (32) are provided, and the two positioning sliders (32) are both threadedly connected to the screw rod (33), and the rotation directions of the threaded connections are opposite, and the two positioning sliders (32) are driven to move away from or closer to each other by the rotation of the screw rod (33).

6. The automatic sampling device for a heat treatment production line according to claim 5, characterized in that: It also includes a sensing grating (4) arranged upstream of the conveying roller (2), the sensing grating (4) being arranged on the frame (1) and located at the lower side of the conveying roller (2), and the sensing grating (4) being located in the middle of two adjacent conveying rollers (21) in the conveying roller (2), and there being a gap between the two conveying rollers (21), and the sensing grating (4) being arranged upward through the gap.

7. The automatic sampling device for a heat treatment production line according to claim 5, characterized in that: The two positioning sliders (32) are each provided with a guide plate (321), and each positioning slider (32) is provided with two guide plates (321), the two guide plates (321) are respectively provided at the upstream and downstream ends of the positioning slider (32), the two guide plates (321) located at the upstream end of the two positioning sliders (32) are provided in a trumpet shape, and the openings are directed toward the upstream end, and the two guide plates (321) located at the downstream end of the two positioning sliders (32) are provided in a trumpet shape, and the openings are directed toward the downstream end.

8. An automatic sampling device for a heat treatment production line according to any one of claims 1 to 7, characterized in that: The frame (1) is also provided with a dust removal mechanism (6), which is located on one side of the frame (1) and close to the cutting mechanism (5).

9. The automatic sampling device for a heat treatment production line according to claim 8, characterized in that: The dust removal mechanism (6) comprises a negative pressure generating assembly (61), a filter assembly (62) and a connecting pipe (63); a collecting chamber (11) is provided on the frame (1); the collecting chamber (11) is located below the sieve plate (52); the negative pressure generating assembly (61) and the filter assembly (62) are both arranged on one side of the frame (1); one end of the connecting pipe (63) is connected to the collecting chamber (11); the other end of the connecting pipe (63) is connected to the negative pressure generating assembly (61); and the negative pressure generating assembly (61) and the filter assembly (62) are arranged in communication.

10. The automatic sampling device for a heat treatment production line according to claim 3, characterized in that: The gantry (531) is also provided with a sorting mechanism (7), the sorting mechanism (7) is slidably connected to the gantry (531), and an electromagnet (71) for adsorbing materials is installed on the sorting mechanism (7), and the electromagnet (71) is arranged toward the sieve plate (52).

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