Abnormal discharging identification device for electric wire extruder

Abstract

The utility model provides an electric wire extruder blanking abnormity identification device, the device comprises an upper probe, a lower probe and a PLC controller, the upper probe is installed on the side wall of a material mixing pipe between a superfluous color master batch discharge port and a color master batch leak-proof hopper, the lower probe is installed on the side wall of the lower end part of the material mixing pipe, and the PLC controller is connected with the PLC controller. The upper probe, the lower probe, the cable material blanking screw rod and the color master batch blanking screw rod are respectively connected with the PLC and are controlled by the PLC; and when the time difference between the received upper probe signal and the received lower probe signal is greater than a preset value, the PLC controls the extruder equipment to stop and give an alarm. According to the utility model, the error rate of extruder equipment can be effectively reduced, the product quality risk is reduced, and the product production quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wire extruders, in particular to a device for identifying abnormal material feeding of wire extruders. Background Art

[0002] The current wire extruder requires two materials in the normal production process, one is the wire raw material and the other is the masterbatch, where the mass ratio of the wire raw material to the masterbatch is 50:1. Under abnormal circumstances, only the masterbatch will be added without the raw material. The products produced under this abnormal situation have no stretching effect on the insulation skin, which will cause the wire skin to break during use, resulting in safety problems. In this regard, the spark machine, bump gauge, and outer diameter gauge of the extrusion production line cannot detect it, and the sensors of the existing equipment feeding system cannot detect it, which poses a great quality risk. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a device for identifying abnormal material feeding of a wire extruder, so as to realize abnormal identification of a wire extruder which only feeds masterbatches but not main materials, thereby improving production efficiency and reducing defective product rate.

[0004] The utility model is implemented as follows: a device for identifying abnormal material discharge of a wire extruder, wherein the discharge components of the extruder include a cable storage hopper, a cable material discharge screw, a masterbatch storage hopper, a masterbatch discharge screw, a superfluous masterbatch discharge port, a masterbatch anti-leakage hopper and a mixing tube, the device includes an upper probe, a lower probe and a PLC controller, the upper probe is installed on the side wall of the mixing tube between the superfluous masterbatch discharge port and the masterbatch anti-leakage hopper, the lower probe is installed on the side wall of the lower end of the mixing tube, the upper probe, the lower probe, the cable material discharge screw and the masterbatch discharge screw are respectively connected to and controlled by the PLC controller;

[0005] The PLC controller controls the cable material feeding screw and the masterbatch feeding screw to discharge materials according to the lower probe signal, and controls the cable material feeding screw and the masterbatch feeding screw to stop discharging materials according to the upper probe signal. The PLC controller controls the extruder equipment to stop alarm when the time difference between the received upper probe signal and the lower probe signal is greater than a preset value.

[0006] Furthermore, the upper probe and the lower probe are proximity switches, which use capacitance and inductance for position sensing.

[0007] Furthermore, the upper probe and the lower probe are both disposed on the side wall of the mixing tube and are flush with the inner wall of the mixing tube.

[0008] Furthermore, the device also includes a warning light, which is connected to the PLC controller.

[0009] Furthermore, the distance between the upper probe and the lower probe is 30 cm.

[0010] Furthermore, the PLC controller adopts s7-1200 model chip.

[0011] The utility model has the following advantages: installing a corresponding abnormality identification device on the wire extruder can effectively reduce the error rate of the equipment, reduce quality risks, improve product production quality, and the required material and labor costs are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0013] Figure 1 The utility model is a structural schematic diagram of a device for identifying abnormal material feeding of a wire extruder.

[0014] Figure 2 The utility model is a control system connection schematic diagram of a device for identifying abnormal material discharge of a wire extruder.

[0015] In the figure: 11, including cable storage hopper, 12, cable material feeding screw, 13, masterbatch storage hopper, 14, masterbatch feeding screw, 15, excess masterbatch discharge port, 16, masterbatch leak-proof hopper, 17, mixing tube, 21, upper probe, 22, lower probe, 23, PLC controller, 24, warning light. DETAILED DESCRIPTION

[0016] See also Figure 1 and Figure 2 As shown, the utility model provides a device for identifying abnormal material discharge of a wire extruder, wherein the material discharge components of the extruder include a cable storage hopper 11, a cable material discharge screw 12, a masterbatch storage hopper 13, a masterbatch discharge screw 14, a superfluous masterbatch discharge port 15, a masterbatch anti-leakage hopper 16 and a mixing tube 17, and the device includes an upper probe 21, a lower probe 22 and a PLC controller 23, wherein the upper probe 21 is installed on the side wall of the mixing tube 17 between the superfluous masterbatch discharge port 15 and the masterbatch anti-leakage hopper 16, and the lower probe 22 is installed on the side wall of the lower end of the mixing tube 17, and the upper probe 21 and the lower probe 22 are respectively connected to the PLC controller 23 and controlled by the PLC controller 23;

[0017] The PLC controller 23 controls the discharge of the cable material feeding screw 12 and the masterbatch feeding screw 14 according to the signal of the lower probe 21, and controls the cable material feeding screw 12 and the masterbatch feeding screw 14 to stop discharging according to the signal of the upper probe 22. The PLC controller 23 controls the extruder equipment to stop alarm when the time difference between the received upper probe signal and the lower probe signal is greater than a preset value.

[0018] In a specific embodiment, the upper probe and the lower probe are proximity switches, which use capacitance and inductance for position sensing.

[0019] In a specific embodiment, the upper probe and the lower probe are both disposed on the side wall of the mixing tube and are flush with the inner wall of the mixing tube.

[0020] In a specific embodiment, the device further includes a warning light, and the warning light is connected to the PLC controller.

[0021] In a specific embodiment, the distance between the upper probe and the lower probe is 30 cm.

[0022] In a specific embodiment, the PLC controller uses Siemens s7-1200 model or 315-2dp model chip.

[0023] The working principle of the utility model is as follows:

[0024] When the wire extruder is working, when the plastic particles in the mixing tube are consumed to the lower probe, the signal will be transmitted to the PLC controller 23. At this time, the PLC controller 23 controls the cable material feeding screw 12 and the masterbatch feeding screw 14 to rotate simultaneously, so that the wire material and the masterbatch begin to be discharged from the cable material storage hopper 11 and the masterbatch discharge hopper 13 to the mixing tube 17 at the same time. It is estimated that after about 8-9 seconds, the plastic particles in the mixing tube 17 will reach the position of the upper probe 21. When the material reaches the upper probe 21, the signal will be transmitted to the PLC controller 23. At this time, the PLC controller 23 controls the cable material feeding screw 12 and the masterbatch feeding screw 14 to stop rotating. The normal rotation time of the masterbatch machine motor in this process should be within 9 seconds. If it is detected that the time consumed in this process is greater than 9 seconds, it means that the equipment may only discharge masterbatches. The PLC controller 23 controls the extruder equipment to stop and turns on the warning light to prompt the user of the occurrence of abnormal conditions.

[0025] When it is necessary to switch to a different masterbatch, the remaining masterbatch can be discharged from the excess masterbatch discharge port 15 into the masterbatch leak-proof hopper 16 to update the masterbatch in the masterbatch storage hopper.

[0026] The utility model installs two upper and lower probes in the mixing tube. When the height of the plastic particles is at the lower limit probe, the equipment automatically starts to discharge the cable material and the masterbatch at the same time. When the height of the plastic particles in the mixing tube reaches the upper limit probe, the discharge is stopped. From the start of discharge to the stop of discharge, a period of time "A" will be formed. Because in normal production, the amount of masterbatch is much smaller than that of cable material, and the weight ratio of masterbatch to cable material is about 0.02:1. Based on this, if only the masterbatch is discharged without discharging the cable material, the time "B" formed from the discharge from the lower limit probe to the upper limit probe will be much greater than the time "A". Therefore, a preset time "C" is set by the controller so that "C" is equal to or slightly greater than "A". When the discharge time "D" of formal production is greater than the time "C", the equipment alarm is stopped. The cost of this error-proofing device is relatively low, and it can actually solve the production problems of the factory, effectively reduce the error rate of the equipment, reduce quality risks, and improve the production quality of products.

[0027] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A device for identifying abnormal material discharge of a wire extruder, wherein the discharge components of the extruder include a cable storage hopper, a cable material discharge screw, a masterbatch storage hopper, a masterbatch discharge screw, an excess masterbatch discharge port, a masterbatch leak-proof hopper and a mixing pipe, Features: The device comprises an upper probe, a lower probe and a PLC controller, wherein the upper probe is installed on the side wall of the mixing tube between the excess masterbatch discharge port and the masterbatch anti-leakage hopper, and the lower probe is installed on the side wall of the lower end of the mixing tube. The upper probe, the lower probe, the cable material feeding screw and the masterbatch feeding screw are respectively connected to and controlled by the PLC controller; The PLC controller controls the cable material feeding screw and the masterbatch feeding screw to discharge materials according to the lower probe signal, and controls the cable material feeding screw and the masterbatch feeding screw to stop discharging materials according to the upper probe signal. The PLC controller controls the extruder equipment to stop alarm when the time difference between the received upper probe signal and the lower probe signal is greater than a preset value.

2. A device for identifying abnormal material discharge of a wire extruder according to claim 1, Features: The upper probe and the lower probe are proximity switches.

3. A device for identifying abnormal material discharge of a wire extruder according to claim 1, Features: The upper probe and the lower probe are both arranged on the side wall of the mixing tube and are flush with the inner wall of the mixing tube.

4. A device for identifying abnormal material discharge of a wire extruder according to claim 1, Features: The device also includes a warning light, which is connected to the PLC controller.

5. The device for identifying abnormal material discharge of a wire extruder according to claim 1, Features: The distance between the upper probe and the lower probe is 30 cm.

6. A device for identifying abnormal material discharge of a wire extruder according to claim 1, Features: The PLC controller adopts s7-1200 model chip.

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