A demagnetization device

Abstract

The utility model discloses a demagnetizing device, it includes conveying mechanism, demagnetizing mechanism, detection mechanism and flow guide mechanism, conveying mechanism has input passageway and two output passageways, and the import end of two output passageways all with the export end intercommunication of input passageway, demagnetizing mechanism with input passageway corresponds, and it is used to carry out demagnetizing treatment to work piece, detection mechanism with input passageway corresponds, and located downstream side of demagnetizing mechanism, and it is used to carry out residual magnetism detection to work piece, flow guide mechanism with input passageway corresponds, and located downstream side of detection mechanism, and it is used to guide the qualified work piece into one output passageway in. The utility model has the beneficial effect that: this demagnetizing device can carry out residual magnetism detection to the work piece after demagnetizing, prevents the work piece of residual magnetism overproof and flows into the subsequent process to cause quality risk to prevent, guarantees the machining precision, equipment life and product safety.

Description

Technical Field

[0001] This utility model relates to the field of demagnetizing equipment technology, and in particular to a demagnetizing device. Background Technology

[0002] Excessive residual magnetism primarily impacts machining accuracy, equipment stability, compatibility with subsequent processes, and safety, with a particularly significant effect in precision manufacturing fields such as automotive, aerospace, and medical devices. During cutting (turning, milling, grinding), residual magnetic workpieces attract impurities such as iron filings and abrasive particles, forming "magnetic inclusions." In grinding, iron filings adhere between the grinding wheel and the workpiece surface, causing scratches and pits (roughness increases from Ra0.8μm to Ra3.2μm). In precision assembly, residual magnetism attracts tiny particles (such as iron filings mixed in during bearing assembly), leading to abnormal wear during operation. In multi-station automated production lines, residual magnetic workpieces may abnormally adhere to conveyor belts and positioning pins, causing loading deviations. Therefore, after machining, workpieces require demagnetization using demagnetizing equipment.

[0003] A demagnetizer is a device used to eliminate residual magnetism generated during machining. It uses an electromagnetic coil to generate magnetic lines of force, which directly or indirectly interfere with the original magnetism of the workpiece to achieve demagnetization. Existing demagnetizing equipment (such as the automatic feeding integrated demagnetizer disclosed in application number 201610073865.X) cannot detect residual magnetism in the demagnetized workpiece, leading to quality risks as the residual magnetized workpiece flows into subsequent processes. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a demagnetizing device to solve the technical problem that existing demagnetizing equipment cannot detect residual magnetism in demagnetized workpieces, leading to quality risks caused by residual magnetized workpieces flowing into subsequent processes.

[0005] To achieve the above-mentioned technical objectives, the present invention provides a demagnetizing device, comprising: The conveying mechanism has an input channel and two output channels, the inlet ends of the two output channels being connected to the outlet ends of the input channel; A demagnetizing mechanism, corresponding to the input channel, is used to demagnetize the workpiece; A detection mechanism, corresponding to the input channel and located downstream of the demagnetizing mechanism, is used to detect residual magnetism in the workpiece. A flow guiding mechanism, corresponding to the input channel and located downstream of the detection mechanism, is used to guide qualified workpieces into one of the output channels and unqualified workpieces into the other output channel.

[0006] Furthermore, the conveying mechanism includes a first conveying component, a second conveying component, a third conveying component, and a fourth conveying component. The inlet end of the second conveying component is connected to the outlet end of the first conveying component, the inlet end of the third conveying component is connected to the outlet end of the second conveying component, and the inlet end of the fourth conveying component is connected to the outlet end of the second conveying component. The first conveying component and the second conveying component form the input channel, the third conveying component forms one of the output channels, and the fourth conveying component forms the other output channel. The demagnetizing mechanism corresponds to the first conveying component, the detection mechanism corresponds to the second conveying component and is located upstream of the second conveying component, and the flow guiding mechanism corresponds to the second conveying component and is located downstream of the second conveying component.

[0007] Furthermore, the conveying width of the downstream section of the second conveying component is greater than the conveying width of the upstream section of the second conveying component.

[0008] Furthermore, the second conveying assembly includes a conveying plate, two first side plates, and two second side plates. The conveying plate is inclined, with its high end connected to the outlet end of the first conveying assembly and its low end connected to the inlet end of the third and fourth conveying assemblies. The two first side plates are fixedly mounted on the conveying plate opposite to each other and spaced apart, forming an upstream section of the second conveying assembly between the two first side plates. The two second side plates are fixedly mounted on the conveying plate opposite to each other and spaced apart, forming a downstream section of the second conveying assembly between the two second side plates. The distance between the two second side plates is greater than the distance between the two first side plates.

[0009] Furthermore, the flow guiding mechanism includes a flow guiding plate and a driving assembly. The flow guiding plate is disposed between the two second side plates along the conveying direction of the second conveying assembly. The downstream end of the flow guiding plate is located between the third conveying assembly and the fourth conveying assembly and is rotatably connected to the conveying plate. The driving assembly is connected to the rotation shaft at the downstream end of the flow guiding plate and is used to drive the flow guiding plate to swing back and forth around its rotation shaft so that the upstream end of the flow guiding plate docks with one of the first side plates.

[0010] Furthermore, the drive assembly is disposed below the conveyor plate and includes a connecting rod and a first telescopic drive member. One end of the connecting rod is fixedly connected to the rotary shaft at the downstream end of the guide plate. The fixed end of the first telescopic drive member is hinged to the conveyor plate via a pin, and the output end of the first telescopic drive member is hinged to the other end of the connecting rod via a pin, for driving the connecting rod to reciprocate.

[0011] Furthermore, the demagnetizing device also includes a blocking mechanism, which corresponds to the input channel and is located between the detection mechanism and the guide mechanism. The blocking mechanism is used to block or allow the workpiece in the input channel to stay at the detection mechanism for a preset time.

[0012] Furthermore, the demagnetizing device also includes a clamping mechanism, which corresponds to the input channel and is located between the demagnetizing mechanism and the detection mechanism, for clamping or releasing the workpiece blocked by the blocking mechanism in the input channel.

[0013] Furthermore, the demagnetizing device also includes a monitoring mechanism, which is electrically connected to both the demagnetizing mechanism and the detection mechanism. The monitoring mechanism is used to monitor the position of the workpiece in the input channel to control the power supply of the demagnetizing mechanism and the detection mechanism. When the workpiece reaches the first preset position, the demagnetizing mechanism is powered on, and when the workpiece reaches the second preset position, the detection mechanism is powered on.

[0014] Furthermore, the monitoring mechanism includes a first photoelectric sensor switch and a second photoelectric sensor switch. The first photoelectric sensor switch is disposed upstream of the demagnetizing mechanism and electrically connected to the demagnetizing mechanism to control the power supply of the demagnetizing mechanism. The second photoelectric sensor switch is disposed upstream of the detection mechanism and electrically connected to the detection mechanism to control the power supply of the detection mechanism.

[0015] Compared with the prior art, the beneficial effects of this utility model include: In use, the inlet end of the input channel is connected to the outlet end of the upstream processing step, and the outlet end of one of the output channels is connected to the inlet end of the downstream processing step. The workpiece is transported by the conveying mechanism, and the workpiece transported in the input channel can be demagnetized by the demagnetizing mechanism. The residual magnetism of the demagnetized workpiece can be detected by the detection mechanism. If the residual magnetism of the workpiece meets the standard, it is a qualified product, and the guiding mechanism will guide the qualified workpiece into one of the output channels. If the residual magnetism of the workpiece exceeds the standard, it is a defective product, and the guiding mechanism will guide the defective workpiece into another output channel. This demagnetizing device can detect the residual magnetism of the demagnetized workpiece, preventing workpieces with excessive residual magnetism from flowing into subsequent processes and causing quality risks, thus ensuring processing accuracy, equipment life and product safety. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a demagnetizing device provided by this utility model from a first-view perspective; Figure 2 This is a three-dimensional structural diagram of a demagnetizing device provided by this utility model from a second perspective. Figure 3This is a three-dimensional structural diagram of a demagnetizing device provided by this utility model from a third-person perspective; In the diagram: 100 - Conveying mechanism, 110 - First conveying assembly, 120 - Second conveying assembly, 121 - Conveying plate, 122 - First side plate, 1221 - Groove, 123 - Second side plate, 130 - Third conveying assembly, 140 - Fourth conveying assembly, 200 - Demagnetizing mechanism, 300 - Detection mechanism, 400 - Guide mechanism, 410 - Guide plate, 420 - Drive assembly, 421 - Linkage rod, 422 - First telescopic drive component, 500 - Material blocking mechanism, 510 - Support, 520 - Baffle, 530 - Second telescopic drive component, 600 - Clamping mechanism, 610 - Clamping block, 620 - Third telescopic drive component, 700 - Monitoring mechanism, 710 - First photoelectric sensor switch, 720 - Second photoelectric sensor switch. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0018] This utility model provides a demagnetizing device, the structure of which is as follows: Figure 1 - Figure 2 As shown, the device includes a conveying mechanism 100, a demagnetizing mechanism 200, a detection mechanism 300, and a flow guiding mechanism 400. The conveying mechanism 100 has an input channel and two output channels, with the inlet ends of the two output channels connected to the outlet ends of the input channel. The demagnetizing mechanism 200 corresponds to the input channel and is used to demagnetize the workpiece. The detection mechanism 300 corresponds to the input channel and is located downstream of the demagnetizing mechanism 200, and is used to detect residual magnetism in the workpiece. The flow guiding mechanism 400 corresponds to the input channel and is located downstream of the detection mechanism 300, and is used to guide qualified workpieces into one of the output channels and guide unqualified workpieces into the other output channel.

[0019] In use, the inlet end of the input channel is connected to the outlet end of the upstream processing step, and the outlet end of one of the output channels is connected to the inlet end of the downstream processing step. The workpiece is conveyed by the conveying mechanism 100. The demagnetizing mechanism 200 can demagnetize the workpiece conveyed in the input channel. The detection mechanism 300 can detect the residual magnetism of the demagnetized workpiece. If the residual magnetism of the workpiece meets the standard, it is a qualified product. The guiding mechanism 400 will guide the qualified workpiece into one of the output channels. If the residual magnetism of the workpiece exceeds the standard, it is a defective product. The guiding mechanism 400 will guide the defective workpiece into the other output channel. This demagnetizing device can detect the residual magnetism of the demagnetized workpiece, preventing workpieces with excessive residual magnetism from flowing into subsequent processes and causing quality risks, thus ensuring processing accuracy, equipment life and product safety.

[0020] As a preferred embodiment, please refer to Figure 1 and Figure 2 The conveying mechanism 100 includes a first conveying component 110, a second conveying component 120, a third conveying component 130, and a fourth conveying component 140. The inlet end of the second conveying component 120 is connected to the outlet end of the first conveying component 110, the inlet end of the third conveying component 130 is connected to the outlet end of the second conveying component 120, and the inlet end of the fourth conveying component 140 is connected to the outlet end of the second conveying component 120. The first conveying component 110 and the second conveying component 120 form the input channel, the third conveying component 130 forms one of the output channels, and the fourth conveying component 140 forms the other output channel. The demagnetizing mechanism 200 corresponds to the first conveying component 110, the detection mechanism 300 corresponds to the second conveying component 120 and is located upstream of the second conveying component 120, and the flow guiding mechanism 400 corresponds to the second conveying component 120 and is located downstream of the second conveying component 120, thereby realizing segmented processing of workpiece demagnetization and residual magnetism detection, and realizing the separation of qualified and unqualified products.

[0021] As a preferred embodiment, please refer to Figure 1 and Figure 2 The first conveying component 110, the third conveying component 130 and the fourth conveying component 140 are all chain conveyors, which improves the stability of workpiece conveying.

[0022] As a preferred embodiment, please refer to Figure 1 and Figure 2 The conveying width of the downstream section of the second conveying component 120 is greater than the conveying width of the upstream section of the second conveying component 120, which can ensure the implementation of the flow guiding function of the flow guiding mechanism 400.

[0023] As a preferred embodiment, please refer to Figure 1 and Figure 2 The second conveying assembly 120 includes a conveying plate 121, two first side plates 122, and two second side plates 123. The conveying plate 121 is inclined, with its high end connected to the outlet end of the first conveying assembly 110 and its low end connected to the inlet ends of the third conveying assembly 130 and the fourth conveying assembly 140. The two first side plates 122 are fixedly mounted on the conveying plate 121 at intervals, forming an upstream section of the second conveying assembly 120 between them. The two second side plates 123 are fixedly mounted on the conveying plate 121 at intervals. The second side plate 123 forms the downstream section of the second conveying assembly 120. The distance between the two second side plates 123 is greater than the distance between the two first side plates 122. After the demagnetizing mechanism 200 demagnetizes the workpiece, the workpiece is conveyed to the conveying plate 121 by the first conveying assembly 110 and slides down automatically along the conveying plate 121. When the workpiece reaches the detection mechanism 300, the residual magnetism of the workpiece can be detected by the detection mechanism 300. According to the residual magnetism detection result, under the guiding action of the guiding mechanism 400, it is guided into the third conveying assembly 130 or the fourth conveying assembly 140.

[0024] In a preferred embodiment, the demagnetizing mechanism 200 is a demagnetizer with a multi-stage adjustable demagnetizing coil group, supporting an alternating frequency of 0.1-10kHz and a maximum magnetic field. The demagnetizer selected is a frame-type demagnetizer from Yongsheng Lindong.

[0025] In a preferred embodiment, the detection mechanism 300 is a residual magnetism detector, which uses a high-precision magnetic field strength meter to detect the residual magnetism on the surface.

[0026] As a preferred embodiment, please refer to Figure 1 and Figure 3The flow guiding mechanism 400 includes a flow guiding plate 410 and a driving assembly 420. The flow guiding plate 410 is disposed between two second side plates 123 along the conveying direction of the second conveying assembly 120. The downstream end of the flow guiding plate 410 is located between the third conveying assembly 130 and the fourth conveying assembly 140 and is rotatably connected to the conveying plate 121. The driving assembly 420 is connected to the rotation shaft at the downstream end of the flow guiding plate 410 and is used to drive the flow guiding plate 410 to swing back and forth around its rotation shaft so that the upper end of the flow guiding plate 410 is connected to one of the first side plates 122. According to the residual magnetism detection result of the workpiece by the detection mechanism 300, the driving assembly 420 will drive the flow guiding plate 410 to swing back and forth around its rotation shaft so that the upstream end of the flow guiding plate 410 is connected to one of the first side plates 122, thereby allowing the workpiece after residual magnetism detection to be introduced into the third conveying assembly 130 or the fourth conveying assembly 140.

[0027] As a preferred embodiment, please refer to Figure 3 The driving assembly 420 is disposed below the conveying plate 121 and includes a connecting rod 421 and a first telescopic driving member 422. One end of the connecting rod 421 is fixedly connected to the rotary shaft at the downstream end of the guide plate 410. The fixed end of the first telescopic driving member 422 is hinged to the conveying plate 121 via a pin. The output end of the first telescopic driving member 422 is hinged to the other end of the connecting rod 421 via a pin, for driving the connecting rod 421 to swing back and forth. When the first telescopic driving member 422 is activated, the output end of the first telescopic driving member 422 extends or shortens, which can drive the connecting rod 421 to swing back and forth, thereby driving the guide plate 410 to swing back and forth, so that the upstream end of the guide plate 410 is connected to one of the first side plates 122.

[0028] As a preferred embodiment, please refer to Figure 1 and Figure 2 The demagnetizing device further includes a blocking mechanism 500, which corresponds to the input channel and is located between the detection mechanism 300 and the guide mechanism 400. The blocking mechanism 500 is used to block or release workpieces in the input channel, allowing the workpieces to remain at the detection mechanism 300 for a preset time. By blocking the workpieces, the blocking mechanism 500 increases the dwell time of the workpieces at the detection mechanism 300, ensuring the effectiveness of the residual magnetism detection of the workpieces by the detection mechanism 300. After the detection mechanism 300 finishes detecting the residual magnetism of the workpieces, the blocking mechanism 500 releases the workpieces.

[0029] As a preferred embodiment, please refer to Figure 1 and Figure 2The material blocking mechanism 500 corresponds to the second conveying assembly 120 and is located upstream of the second conveying assembly 120. The material blocking mechanism 500 includes a bracket 510, a baffle 520, and a second telescopic drive member 530. The bracket 510 is fixedly connected to the conveying plate 121, and the baffle 520 is slidably connected to the bracket 510. The fixed end of the second telescopic drive member 530 is fixedly connected to the bracket 510, and the output end of the second telescopic drive member 530 is fixedly connected to the baffle 520. The output end of the second telescopic drive member 530 is used to drive the baffle 520 to move up and down, so that the baffle 520 moves into or out of the two first side plates 122. When the second telescopic drive member 530 is activated, the output end of the second telescopic drive member 530 will extend or shorten, thereby driving the baffle 520 to move up and down, so that the baffle 520 moves into or out of the two first side plates 122, thereby blocking or releasing the workpiece.

[0030] As a preferred embodiment, please refer to Figure 1 and Figure 2 The demagnetizing device further includes a clamping mechanism 600, which corresponds to the input channel and is located between the demagnetizing mechanism 200 and the detection mechanism 300. The clamping mechanism 600 clamps or releases the workpiece blocked by the stop mechanism 500 within the input channel. By clamping the workpiece with the clamping mechanism 600, it ensures that the workpiece will not move during residual magnetism detection, thus guaranteeing the effectiveness of the residual magnetism detection by the detection mechanism 300. After the residual magnetism detection by the detection mechanism 300 is completed, the clamping mechanism 600 releases the workpiece.

[0031] As a preferred embodiment, please refer to Figure 1 and Figure 2 The clamping mechanism 600 corresponds to the second conveying assembly 120 and is located upstream of the second conveying assembly 120. The clamping mechanism 600 includes two clamping blocks 610 and two third telescopic drive members 620. Each of the two first side plates 122 has a slot 1221. The fixed ends of the two third telescopic drive members 620 are fixedly connected to the conveying plate 121. The output ends of the two third telescopic drive members 620 are fixedly connected to the two clamping blocks 610 one-to-one, and are used to drive the two clamping blocks 610 to pass through the two slots 1221 one-to-one to abut or separate from the workpiece. When the two third telescopic drive members 620 are activated simultaneously, the output ends of the two third telescopic drive members 620 extend or shorten simultaneously, thereby driving the two clamping blocks 610 to pass through the two slots 1221 one-to-one to abut or separate from the workpiece, thus achieving clamping or releasing the workpiece.

[0032] As a preferred embodiment, please refer to Figure 1 and Figure 2 The demagnetizing device further includes a monitoring mechanism 700, which is electrically connected to both the demagnetizing mechanism 200 and the detection mechanism 300. The monitoring mechanism 700 monitors the position of the workpiece within the input channel to control the power supply to the demagnetizing mechanism 200 and the detection mechanism 300. When the workpiece reaches a first preset position, the demagnetizing mechanism 200 is energized; when the workpiece reaches a second preset position, the detection mechanism 300 is energized. Existing demagnetizing equipment continuously powers the demagnetizer, wasting energy and resulting in a high failure rate. This demagnetizing device, by powering the demagnetizing mechanism 200 when the workpiece reaches the first preset position and the detection mechanism 300 when the workpiece reaches the second preset position, enables intermittent demagnetization and intermittent residual magnetism detection. This not only saves energy but also prevents damage to the demagnetizer due to continuous power supply, thus extending the demagnetizer's lifespan.

[0033] As a preferred embodiment, please refer to Figure 1 and Figure 2 The monitoring mechanism 700 includes a first photoelectric sensor switch 710 and a second photoelectric sensor switch 720. The first photoelectric sensor switch 710 is located upstream of the demagnetizing mechanism 200 and is electrically connected to the demagnetizing mechanism 200 to control the power supply of the demagnetizing mechanism 200. The second photoelectric sensor switch 720 is located upstream of the detection mechanism 300 and is electrically connected to the detection mechanism 300 to control the power supply of the detection mechanism 300. In this demagnetizing device, when the first photoelectric sensor switch 710 detects a workpiece, the workpiece reaches a first preset position, and the demagnetizing mechanism 200 is energized. When the second photoelectric sensor switch 720 detects a workpiece, the workpiece reaches a second preset position, and the detection mechanism 300 is energized. This enables intermittent demagnetization and intermittent residual magnetism detection, which not only saves energy but also prevents the demagnetizer from being damaged by continuous power supply, thus improving the service life of the demagnetizer.

[0034] To better understand this utility model, the following is combined with... Figure 1 - Figure 3 The working principle of the technical solution of this utility model will be described in detail below: In use, the inlet end of the first conveying assembly 110 is communicated with the outlet end of the upstream processing procedure, and the outlet end of the third conveying assembly 130 is communicated with the inlet end of the downstream processing procedure. Workpieces are conveyed through the first conveying assembly 110, the second conveying assembly 120, the third conveying assembly 130 and the fourth conveying assembly 140. When the first photoelectric inductive switch 710 detects a workpiece, the workpiece reaches a first preset position, the demagnetization mechanism 200 is energized, and the demagnetization mechanism 200 can perform demagnetization treatment on the workpiece conveyed on the first conveying assembly 110. When the second photoelectric inductive switch 720 detects a workpiece, the workpiece reaches a second preset position, the second telescopic driving member 530 is activated, and the output end of the second telescopic driving member 530 extends, so as to drive the baffle 520 to move downward, making the baffle 520 move between the two first side plates 122 to block the workpiece. Then the two third telescopic driving members 620 are activated simultaneously, the output ends of the two third telescopic driving members 620 extend at the same time, so as to drive the two clamping blocks 610 to pass through the two notches 1221 in a one-to-one correspondence manner to abut against the workpiece, so as to clamp the workpiece. The detection mechanism 300 is energized, which can perform residual magnetism detection on the demagnetized workpiece. If the residual magnetism of the workpiece meets the standard, the workpiece is a qualified product, the first telescopic driving member 422 is activated, the output end of the first telescopic driving member 422 extends, which can drive the connecting rod 421 to swing, so as to drive the guide plate 410 to swing, so that the upstream end of the guide plate 410 is butted with one of the first side plates 122, and the guide plate 410 will guide the qualified workpiece into the third conveying assembly 130. If the residual magnetism of the workpiece exceeds the standard, the workpiece is an unqualified product, the first telescopic driving member 422 is activated, the output end of the first telescopic driving member 422 retracts, which can drive the connecting rod 421 to swing, so as to drive the guide plate 410 to swing, so that the upstream end of the guide plate 410 is butted with the other first side plate 122, and the guide plate 410 will guide the unqualified workpiece into the fourth conveying assembly 140. This demagnetization device can perform residual magnetism detection on the demagnetized workpiece, prevent workpieces with excessive residual magnetism from flowing into subsequent procedures and causing quality risks, and ensure processing accuracy, equipment service life and product safety.

[0035] The demagnetization device provided by the present utility model has the following beneficial effects: (1) The two third telescopic driving members 620 are activated simultaneously, and the output ends of the two third telescopic driving members 620 extend at the same time, so as to drive the two clamping blocks 610 to pass through the two notches 1221 in a one-to-one correspondence manner to abut against the workpiece, so as to clamp the workpiece and ensure the residual magnetism detection effect of the detection mechanism 300 on the workpiece; (2) In this demagnetizing device, when the workpiece reaches the first preset position, the demagnetizing mechanism 200 is energized, and when the workpiece reaches the second preset position, the detection mechanism 300 is energized. This can realize intermittent demagnetization and intermittent residual magnetism detection, which can not only save energy, but also avoid damage to the demagnetizer due to continuous power supply and improve the service life of the demagnetizer. (3) This demagnetizing device can detect residual magnetism in demagnetized workpieces, prevent workpieces with excessive residual magnetism from flowing into subsequent processes and causing quality risks, and ensure processing accuracy, equipment life and product safety.

[0036] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A demagnetizing device, characterized in that, include: The conveying mechanism has an input channel and two output channels, the inlet ends of the two output channels being connected to the outlet ends of the input channel; A demagnetizing mechanism, corresponding to the input channel, is used to demagnetize the workpiece; The detection mechanism, which corresponds to the input channel and is located downstream of the demagnetizing mechanism, is used to detect residual magnetism in the workpiece. A flow guiding mechanism, corresponding to the input channel and located downstream of the detection mechanism, is used to guide qualified workpieces into one of the output channels and unqualified workpieces into the other output channel.

2. The demagnetizing device according to claim 1, characterized in that, The conveying mechanism includes a first conveying component, a second conveying component, a third conveying component, and a fourth conveying component. The inlet end of the second conveying component is connected to the outlet end of the first conveying component. The inlet end of the third conveying component is connected to the outlet end of the second conveying component. The inlet end of the fourth conveying component is connected to the outlet end of the second conveying component. The first conveying component and the second conveying component form the input channel. The third conveying component forms one of the output channels. The fourth conveying component forms the other output channel. The demagnetizing mechanism corresponds to the first conveying component. The detection mechanism corresponds to the second conveying component and is located upstream of the second conveying component. The flow guiding mechanism corresponds to the second conveying component and is located downstream of the second conveying component.

3. The demagnetizing device according to claim 2, characterized in that, The conveying width of the downstream section of the second conveying component is greater than the conveying width of the upstream section of the second conveying component.

4. The demagnetizing device according to claim 2, characterized in that, The second conveying assembly includes a conveying plate, two first side plates, and two second side plates. The conveying plate is inclined, with its high end connected to the outlet end of the first conveying assembly and its low end connected to the inlet ends of the third and fourth conveying assemblies. The two first side plates are fixedly mounted on the conveying plate opposite to each other and spaced apart, forming an upstream section of the second conveying assembly. The two second side plates are fixedly mounted on the conveying plate opposite to each other and spaced apart, forming a downstream section of the second conveying assembly. The distance between the two second side plates is greater than the distance between the two first side plates.

5. The demagnetizing device according to claim 4, characterized in that, The flow guiding mechanism includes a flow guiding plate and a driving assembly. The flow guiding plate is disposed between the two second side plates along the conveying direction of the second conveying assembly. The downstream end of the flow guiding plate is located between the third conveying assembly and the fourth conveying assembly and is rotatably connected to the conveying plate. The driving assembly is connected to the rotation shaft at the downstream end of the flow guiding plate and is used to drive the flow guiding plate to swing back and forth around its rotation shaft so that the upstream end of the flow guiding plate docks with one of the first side plates.

6. The demagnetizing device according to claim 5, characterized in that, The drive assembly is located below the conveyor plate and includes a connecting rod and a first telescopic drive member. One end of the connecting rod is fixedly connected to the rotary shaft at the downstream end of the guide plate. The fixed end of the first telescopic drive member is hinged to the conveyor plate via a pin, and the output end of the first telescopic drive member is hinged to the other end of the connecting rod via a pin, for driving the connecting rod to reciprocate.

7. The demagnetizing device according to claim 4, characterized in that, It also includes a material blocking mechanism, which corresponds to the input channel and is located between the detection mechanism and the flow guiding mechanism, for blocking or allowing the workpiece in the input channel to stay at the detection mechanism for a preset time.

8. The demagnetizing device according to claim 7, characterized in that, It also includes a clamping mechanism, which corresponds to the input channel and is located between the demagnetizing mechanism and the detection mechanism, for clamping or releasing the workpiece blocked by the blocking mechanism in the input channel.

9. The demagnetizing device according to claim 1, characterized in that, It also includes a monitoring mechanism, which is electrically connected to both the demagnetizing mechanism and the detection mechanism. The monitoring mechanism is used to monitor the position of the workpiece in the input channel in order to control the power supply of the demagnetizing mechanism and the detection mechanism. When the workpiece reaches the first preset position, the demagnetizing mechanism is powered on, and when the workpiece reaches the second preset position, the detection mechanism is powered on.

10. The demagnetizing device according to claim 9, characterized in that, The monitoring mechanism includes a first photoelectric sensor switch and a second photoelectric sensor switch. The first photoelectric sensor switch is disposed upstream of the demagnetizing mechanism and electrically connected to the demagnetizing mechanism to control the power supply of the demagnetizing mechanism. The second photoelectric sensor switch is disposed upstream of the detection mechanism and electrically connected to the detection mechanism to control the power supply of the detection mechanism.

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