Mesh belt furnace spreading thickness monitoring device

Abstract

The utility model is applicable to the technical field of heat treatment equipment, and provides a mesh belt furnace spreading thickness monitoring device which comprises a quenching mesh belt furnace, a mesh belt is arranged at the inlet end of the quenching mesh belt furnace, a distribution vibration disc is arranged at the other end, far away from the quenching mesh belt furnace, of the mesh belt, a distance measuring instrument is arranged over the mesh belt, and the distance measuring instrument is connected with the quenching mesh belt furnace. And the range finder is connected with the control electric box. Therefore, the spreading thickness monitoring device for the mesh belt furnace realizes full-time monitoring of the spreading thickness of the mesh belt furnace, and prevents defective products from flowing out.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment equipment, in particular to a device for monitoring the laying thickness of a mesh belt furnace. Background Art

[0002] In the production of fasteners, the heat treatment process is a special process, and the mesh belt furnace is a commonly used device for fastener heat treatment. During the processing of the mesh belt furnace, it is necessary to execute according to the pre-planned parameters. Among them, the key parameter requirement is that the laying thickness on the mesh belt is uniform and cannot exceed the thickness upper limit value (usually 20 mm to 80 mm). If it exceeds the specified value, the product heating temperature at the center of the thick material cannot reach the quenching temperature or the holding time is insufficient, and the tissue transformation is incomplete. As a result, insufficient martensite tissue can be obtained during quenching, leading to the strength (hardness, tensile strength, breaking torque) of a small number of products being lower than the lower limit of the specified value. Since the heat treatment process is a sampling inspection method, inspectors often cannot detect defects. When defective products are used by customers, it will be found that they fail when the assembly force value is lower.

[0003] Controlling the laying thickness often depends on the operation of workers. Common methods include setting the frequency of the magnetic lifter, vibrating hopper feeding, manual pouring, or pouring onto the mesh belt through a weighing device. These feeding methods require workers to have a high sense of responsibility. If new workers operate or are insufficiently trained, it is inevitable that the thickness of the material will be uneven, such as the material at the front end of the laying is thin and the material at the back end is thick, resulting in local over-thickness of the material.

[0004] If the worker operates improperly or the equipment fails and the laying thickness exceeds the limit, the worker and the inspector cannot find it in time, and defective products will flow out to customers, which will cause serious quality accidents and high claims.

[0005] Common methods: such as setting the frequency of the magnetic lifter, vibrating hopper feeding, manual pouring, or pouring onto the mesh belt through a weighing device. Currently, to monitor the thickness of the material on the mesh belt, it is usually visually inspected by the operator, or the inspector measures it with a graduated ruler at irregular times, and the manager supervises the implementation situation by spot-checking beside the furnace. Some install a height induction rod above the mesh belt, and an alarm will be issued when the product laying is too thick and touches the rod. There are also some that install a grating or laser on the side of the mesh belt. These two methods often cause false alarms because some fasteners will stand up, and none of the above methods can record the thickness data and cannot monitor whether the laying thickness exceeds the standard all the time.

[0006] In summary, it is obvious that there are inconveniences and defects in the prior art in actual use, so it is necessary to improve it. Content of the Utility Model

[0007] In view of the above defects, the purpose of the present utility model is to provide a monitoring device for the laying thickness of a mesh belt furnace, which can achieve full-time monitoring of the laying thickness of the mesh belt furnace and prevent defective products from flowing out.

[0008] To achieve the above purpose, the present utility model provides a monitoring device for the laying thickness of a mesh belt furnace, including a quenching mesh belt furnace. A mesh belt is provided at the inlet end of the quenching mesh belt furnace. A cloth vibrating disk is provided at the other end of the mesh belt away from the quenching mesh belt furnace. A rangefinder is provided directly above the mesh belt, and the rangefinder is connected to a control electric box.

[0009] According to the monitoring device for the laying thickness of the mesh belt furnace of the present utility model, the rangefinder is an ultrasonic rangefinder.

[0010] According to the monitoring device for the laying thickness of the mesh belt furnace of the present utility model, a connecting rod is provided between the mesh belt and the rangefinder.

[0011] According to the monitoring device for the laying thickness of the mesh belt furnace of the present utility model, the control electric box is provided with a switch, an alarm and a recorder.

[0012] According to the monitoring device for the laying thickness of the mesh belt furnace of the present utility model, the switch includes an alarm switch, a recorder switch and a power switch.

[0013] According to the monitoring device for the laying thickness of the mesh belt furnace of the present utility model, the alarm is an audible and visual alarm.

[0014] According to the monitoring device for the laying thickness of the mesh belt furnace of the present utility model, the audible and visual alarm includes an LED lamp.

[0015] According to the monitoring device for the laying thickness of the mesh belt furnace of the present utility model, the height distance between the mesh belt and the rangefinder is 600 millimeters.

[0016] According to the monitoring device for the laying thickness of the mesh belt furnace of the present utility model, a support member for supporting the cloth vibrating disk is installed below the cloth vibrating disk.

[0017] According to the monitoring device for the laying thickness of the mesh belt furnace of the present utility model, the support member includes a fixed rod and at least two support rods. The fixed rod is horizontally fixed on the ground. One end of the two support rods is vertically connected to the fixed rod, and the other end of the two support rods is connected to the cloth vibrating disk.

[0018] The utility model provides a monitoring device for the laying thickness of a mesh belt furnace charge, which comprises a quenching mesh belt furnace. A mesh belt and a charging vibrating disk are arranged at the inlet end of the quenching mesh belt furnace. The charging vibrating disk vibrates to convey the mesh belt furnace charge onto the mesh belt. A distance measuring instrument is installed directly above the mesh belt, and the distance between the distance measuring instrument and the mesh belt is a fixed value. The distance measuring instrument is connected to a control electric box, and the control electric box controls the power-on of the distance measuring instrument. When there is mesh belt furnace charge on the mesh belt, the measured value of the distance measuring instrument is the distance between the mesh belt furnace charge on the mesh belt and the distance measuring instrument. The control electric box processes and records the measurement result of the distance measuring instrument to monitor the thickness of the mesh belt furnace charge. Therefore, the monitoring device for the laying thickness of the mesh belt furnace charge of the utility model realizes the full-time monitoring of the thickness of the mesh belt furnace charge and prevents defective products from flowing out. Brief Description of the Drawings

[0019] Figure 1 It is a schematic perspective view of the monitoring device for the laying thickness of the mesh belt furnace charge provided by the utility model. Detailed Embodiment

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the following further details the utility model with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0021] As Figure 1As shown in the figure, the utility model provides a monitoring device 100 for the laying thickness of a mesh belt furnace, which includes a quenching mesh belt furnace 1. An inlet end 11 of the quenching mesh belt furnace 1 is provided with a mesh belt 2. The other end of the mesh belt 2 far away from the quenching mesh belt furnace 1 is provided with a cloth vibrating disk 3. The laying material of the mesh belt furnace falls onto the cloth vibrating disk 3, and the cloth vibrating disk 3 vibrates to convey the laying material of the mesh belt furnace onto the mesh belt 2. A distance measuring instrument 4 is arranged directly above the mesh belt 2. The measuring accuracy of the distance measuring instrument 4 is 1 mm, and the distance between the distance measuring instrument 4 and the mesh belt 2 is fixed. In this embodiment, the distance between the distance measuring instrument 4 and the mesh belt 2 is 600 mm. When there is no laying material of the mesh belt furnace on the mesh belt 2, the measured value of the distance measuring instrument 4 is the distance between the mesh belt 2 and the distance measuring instrument 4, and at this time the measured value is the maximum value. When there is laying material of the mesh belt furnace on the mesh belt 2, the measured value of the distance measuring instrument 4 is the distance between the laying material of the mesh belt furnace on the mesh belt 2 and the distance measuring instrument 4, and the measured value becomes smaller accordingly. The reduced value corresponding to the measured value is the thickness of the laying material of the mesh belt furnace. The distance measuring instrument 4 is connected to a control electric box 5, and the control electric box 5 controls the power-on of the distance measuring instrument 4. The distance measuring instrument 4 is set with the allowable measured value of the distance between the laying material of the mesh belt furnace on the mesh belt 2 and the distance measuring instrument 4. In this embodiment, the allowable measured value of the distance between the laying material of the mesh belt furnace on the mesh belt 2 and the distance measuring instrument 4 is 520 mm. When the measured value is less than the allowable measured value, that is, when the measured value is less than 520 mm, the distance measuring instrument 4 outputs an alarm signal to the control electric box 5, and the alarm 52 on the control electric box 5 starts to give an alarm, so that the worker can come immediately to process the laying material of the mesh belt furnace with excessive thickness; the distance measuring instrument 4 simultaneously converts the measured value into a voltage signal and transmits it to the recorder 53 of the control electric box 5. The control electric box 5 continuously records the measured values transmitted by the distance measuring instrument 4. The user can query the thickness of the laying material of the mesh belt furnace at any time through the recorder 53, trace the suspicious laying material of the mesh belt furnace when an abnormal point is found, and prevent defective products from flowing out.

[0022] Preferably, the distance measuring instrument 4 is an ultrasonic distance measuring instrument 4. The ultrasonic transmitter on the ultrasonic distance measuring instrument 4 emits ultrasonic waves in the direction of the mesh belt 2, and starts timing at the same time of the emission moment. The ultrasonic waves propagate in the air and immediately return when they encounter the mesh belt 2 or the laying material of the mesh belt furnace on the mesh belt 2. The ultrasonic receiver on the ultrasonic distance measuring instrument 4 stops timing immediately when it receives the reflected wave. The propagation speed of ultrasonic waves in the air is 340 m / s. According to the time t recorded by the timer, the distance s between the ultrasonic distance measuring instrument 4 and the mesh belt 2 or the laying material of the mesh belt furnace on the mesh belt 2 can be calculated, that is, the distance s is the product of the propagation speed 340 m / s of ultrasonic waves in the air and the time t recorded by the timer divided by 2.

[0023] Preferably, a connecting rod 6 is arranged between the mesh belt 2 and the distance measuring instrument 4, and the connecting rod 6 supports the distance measuring instrument 4 and fixes it directly above the mesh belt 2.

[0024] Preferably, the control electrical box 5 is provided with a switch 51, an alarm 52 and a recorder 53. The switch 51 conducts power on and off operations for the rangefinder 4. A measured value allowed for the distance between the material laying on the mesh belt furnace on the mesh belt 2 and the rangefinder 4 is set in the rangefinder 4. When the measured value is less than the allowed measured value, the rangefinder 4 outputs an alarm signal to the control electrical box 5. The alarm 52 on the control electrical box 5 is activated to give an alarm, enabling the worker to immediately come to process the over-thick material laying on the mesh belt furnace. Meanwhile, the rangefinder 4 converts the measured value into a voltage signal and transmits it to the recorder 53 of the control electrical box 5. The control electrical box 5 continuously records the measured values transmitted by the rangefinder 4. The user can query the thickness of the material laying on the mesh belt furnace at any time through the recorder 53, trace the suspicious material laying on the mesh belt furnace when an abnormal point is found, and prevent defective products from flowing out.

[0025] Preferably, the switch 51 includes an alarm switch, a recorder switch and a power switch. The alarm switch is electrically connected to the alarm 52 and controls the activation of the alarm 52. The recorder switch is electrically connected to the recorder 53 and controls the activation of the recorder 53. The power switch is electrically connected to the rangefinder 4 and controls the power on and off of the rangefinder 4.

[0026] Preferably, the alarm 52 is an audible and visual alarm 52. A measured value allowed for the distance between the material laying on the mesh belt furnace on the mesh belt 2 and the rangefinder 4 is set in the rangefinder 4. When the measured value is less than the allowed measured value, the rangefinder 4 outputs an alarm signal to the control electrical box 5. The audible and visual alarm 52 on the control electrical box 5 is activated to give an alarm. The audible and visual alarm 52 emits an alarm sound and the light of the alarm 52 is constantly on or flashing.

[0027] Preferably, the audible and visual alarm 52 includes an LED lamp. A measured value allowed for the distance between the material laying on the mesh belt furnace on the mesh belt 2 and the rangefinder 4 is set in the rangefinder 4. When the measured value is less than the allowed measured value, the rangefinder 4 outputs an alarm signal to the control electrical box 5. The audible and visual alarm 52 on the control electrical box 5 is activated to give an alarm. The LED lamp on the audible and visual alarm 52 is constantly on or flashing, and the LED lamp is turned off when the audible and visual alarm 52 stops working.

[0028] Preferably, the height distance between the mesh belt 2 and the rangefinder 4 is 600 millimeters.

[0029] Preferably, a support member 7 for supporting the fabric vibrating disk 3 is installed below the fabric vibrating disk 3. The fabric vibrating disk 3 vibrates to convey the material laying on the mesh belt furnace onto the mesh belt 2. The support member 7 supports the fabric vibrating disk 3 as an inclined plane. When the inclined fabric vibrating disk 3 vibrates, the material laying on the mesh belt furnace moves downward along the inclined fabric vibrating disk 3 and is conveyed onto the mesh belt 2.

[0030] Preferably, the support member 7 includes a fixed rod 71 and at least two support rods 72. The fixed rod 71 is horizontally fixed to the ground. One end of each of the two support rods 72 is vertically connected to the fixed rod 71, and the other end of each of the two support rods 72 is connected to the fabric vibrating disk 3. The fixed rod 71 fixes the two support rods 72 perpendicular to the ground. The two support rods 72 support the fabric vibrating disk 3 and fix the fabric vibrating disk 3 in an inclined state. The inclined fabric vibrating disk 3 is more likely to convey the pusher furnace charge onto the mesh belt 2 during vibration.

[0031] In summary, the present utility model provides a device for monitoring the thickness of the pusher furnace charge, which includes a quenching pusher furnace. A mesh belt and a fabric vibrating disk are provided at the inlet end of the quenching pusher furnace. The fabric vibrating disk vibrates to convey the pusher furnace charge onto the mesh belt. A distance measuring instrument is installed directly above the mesh belt, and the distance between the distance measuring instrument and the mesh belt is a fixed value. The distance measuring instrument is connected to a control electric box, and the control electric box controls the power-on of the distance measuring instrument. When there is pusher furnace charge on the mesh belt, the distance measuring instrument measures the distance value between the pusher furnace charge on the mesh belt and the distance measuring instrument. The control electric box processes and records the measurement result of the distance measuring instrument to monitor the thickness of the pusher furnace charge. Therefore, the device for monitoring the thickness of the pusher furnace charge of the present utility model realizes full-time monitoring of the thickness of the pusher furnace charge and prevents defective products from flowing out.

[0032] Certainly, the present utility model may also have many other embodiments. Without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present utility model.

Claims

1. A device for monitoring the thickness of mesh belt furnace paving, characterized in that: It comprises a quenching mesh belt furnace, wherein a mesh belt is arranged at the inlet end of the quenching mesh belt furnace, a material distribution vibration plate is arranged at the other end of the mesh belt away from the quenching mesh belt furnace, a distance meter is arranged just above the mesh belt, and the distance meter is connected to a control electric box.

2. The mesh belt furnace material thickness monitoring device according to claim 1 is characterized in that: The rangefinder is an ultrasonic rangefinder.

3. The mesh belt furnace material thickness monitoring device according to claim 1 is characterized in that: A connecting rod is arranged between the mesh belt and the distance meter.

4. The device for monitoring the thickness of mesh belt furnace material according to claim 1, characterized in that: The control electric box is provided with a switch, an alarm and a recorder.

5. The device for monitoring the thickness of mesh belt furnace paving material according to claim 4, characterized in that: The switches include an alarm switch, a recorder switch and a power switch.

6. The device for monitoring the thickness of mesh belt furnace material according to claim 4, characterized in that: The alarm is an audible and visual alarm.

7. The device for monitoring the thickness of mesh belt furnace material according to claim 6, characterized in that: The sound and light alarm includes an LED lamp.

8. The device for monitoring the thickness of mesh belt furnace material according to claim 1, characterized in that: The height distance between the mesh belt and the distance meter is 600 mm.

9. The device for monitoring the thickness of mesh belt furnace paving material according to claim 1, characterized in that: A support member for supporting the cloth vibration disk is installed below the cloth vibration disk.

10. The device for monitoring the thickness of mesh belt furnace paving material according to claim 9, characterized in that: The support member includes a fixing rod and at least two supporting rods, wherein the fixing rod is horizontally fixed to the ground, one end of the two supporting rods is vertically connected to the fixing rod, and the other end of the two supporting rods is connected to the cloth vibration plate.

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