An automatic temperature measurement and selection device for cast rods for extrusion

Abstract

The present invention discloses an automatic temperature measurement and selection device for cast rods for extrusion, comprising a cast rod V-shaped track arranged between a discharge port of a cast rod heating furnace and an extruder for the cast rods to pass through, a temperature measurement mechanism is arranged above the cast rod V-shaped track through an inverted L-shaped bracket, the temperature measurement mechanism is connected to a PLC controller, the output end of the temperature measurement mechanism is connected to the input end of the PLC controller, and the output end of the PLC controller is connected to the controlled end of a driving motor; a cast rod pushing mechanism for pushing unqualified cast rods is arranged on the inner side of the bracket, and the input end of the cast rod pushing mechanism is connected to the output end of the PLC controller; an infrared start-stop switch for controlling the cast rods to stop moving is arranged on the inner side of the front bracket of the cast rod pushing mechanism, and the output end of the infrared start-stop switch is connected to the input end of the PLC controller. The present invention automatically measures the temperature of cast rods, can push cast rods with unqualified temperatures to unqualified areas, and can avoid the potential safety hazards caused by manual handling of cast rods.

Description

Technical Field

[0001] The invention relates to the technical field of pipe processing, in particular to an automatic temperature measurement and selection device for cast rods used for extrusion. Background Art

[0002] At present, when aluminum alloy is hot extruded, the extrusion temperature has a great influence on the product quality. The cast rods for extrusion need to be heated to a suitable temperature. Only when the temperature meets the process requirements can the quality of the extruded products be guaranteed. Therefore, before extruding aluminum alloy, it is necessary to measure the temperature of the cast rods for extrusion and remove those that do not meet the temperature requirements to ensure the quality of the product.

[0003] At present, in the production process, most of the temperature of the cast rods is directly measured manually with thermocouples. The measurement position is not fixed, and the temperature measurement result is closely related to the temperature measurement method of the measurement personnel, resulting in a large measurement error. Moreover, for cast rods with unqualified temperatures, they can only be moved away manually. For cast rods with a temperature of several hundred degrees, manual handling is dangerous and can easily cause burns. If the cast rods are moved after the temperature drops, a lot of time is wasted waiting for the cast rods to cool down, resulting in low work efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an automatic temperature measurement and selection device for cast rods for extrusion, which can automatically select qualified products, avoid measurement errors and ensure work efficiency.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0006] An automatic temperature measurement and selection device for cast rods for extrusion comprises a V-shaped cast rod track arranged between a discharge port of a cast rod heating furnace and an extruder for passing cast rods, a temperature measuring mechanism for measuring the temperature of the cast rods is arranged above the V-shaped cast rod track through an inverted L-shaped bracket, the temperature measuring mechanism is connected to a PLC controller for controlling the temperature measurement of the temperature measuring mechanism, the output end of the temperature measuring mechanism is connected to the input end of the PLC controller, and the output end of the PLC controller is connected to the controlled end of a pushing motor; a cast rod pushing mechanism for pushing unqualified cast rods is arranged on the inner side of the bracket, and the input end of the cast rod pushing mechanism is connected to the output end of the PLC controller; an infrared start-stop switch for controlling the cast rods to stop moving is arranged on the inner side of the front end bracket of the cast rod pushing mechanism, and the output end of the infrared start-stop switch is connected to the input end of the PLC controller.

[0007] The above-mentioned automatic temperature measurement and selection device for cast rods for extrusion, the temperature measurement mechanism includes a plurality of thermocouples arranged under the bracket above the V-shaped track of the cast rods for detecting the temperature of the cast rods, and the output end of the thermocouple is connected to the input end of the PLC controller.

[0008] The above-mentioned automatic temperature measurement and selection device for cast rods for extrusion is provided with a slide rail parallel to the cast rod on the bracket located above the thermocouple, and the thermocouple is provided with a slider matched with the slide rail. The slider is provided with a driving motor for driving the slider to move, and the controlled end of the driving motor is connected to the output end of the PLC controller.

[0009] The automatic temperature measurement and selection device for cast rods for extrusion is provided with an infrared sensor for detecting the end position of the cast rods on an inverted L-shaped bracket close to the cast rod heating furnace, and the output end of the infrared sensor is connected to the input end of the PLC controller.

[0010] In the above-mentioned automatic temperature measurement and selection device for cast rods for extrusion, a vertical cylinder for driving the thermocouple to move up and down is arranged at the bottom of the slider, the thermocouple is arranged at the end of the telescopic rod of the vertical cylinder, and the controlled end of the vertical cylinder is connected to the output end of the PLC controller.

[0011] The above-mentioned automatic temperature measurement and selection device for cast rods for extrusion, the cast rod pushing mechanism includes a push plate for pushing the cast rods and a pushing cylinder for controlling the movement of the push plate, the push plate is arranged at the end of the telescopic rod of the pushing cylinder, and the controlled end of the pushing cylinder is connected to the output end of the PLC controller.

[0012] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0013] The present invention automatically measures the temperature of the cast rods, ensures the accuracy of the measurement results, analyzes the detection results, and can push the cast rods with unqualified temperatures to an unqualified area. There is no need to manually carry the high-temperature cast rods, which not only ensures work efficiency but also avoids the safety hazards caused by manual carrying of the cast rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a left side view of the present invention;

[0016] Among them: 1. Casting rod heating furnace, 2. Casting rods, 3. Casting rod V-shaped track, 4. Casting rod pushing mechanism, 5. Infrared start and stop switch, 6. PLC controller, 7. Thermocouple, 8. Bracket. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] An automatic temperature measurement and selection device for extrusion cast rods, the structure of which is as follows Figure 1-2As shown, it includes a casting rod heating furnace 1, a casting rod V-shaped track 3, a bracket 8, a temperature measuring mechanism, a casting rod pushing mechanism 4 and a PLC controller 6. The casting rod heating furnace 1 is used to heat the casting rods. The casting rod V-shaped track 3 is arranged between the casting rod heating furnace 1 and the extruder for the casting rods to pass through. The bracket 8 is an inverted L-shaped bracket, which is arranged on the side of the casting rod V-shaped track 3. The temperature measuring mechanism is arranged on the bracket 8 above the casting rod V-shaped track 3 to measure the temperature of the casting rods. The casting rod pushing mechanism 4 is arranged on the inner side of the bracket 8 to push unqualified casting rods. The PLC controller 6 is used to control the temperature measuring mechanism to measure the temperature of the casting rods. The output end of the temperature measuring mechanism is connected to the input end of the PLC controller, and the output end of the PLC controller is connected to the input end of the casting rod pushing mechanism 4.

[0019] A roller table is arranged between the rod heating furnace 1 and the extruder, and a rod V-shaped track 3 is arranged on the roller table, and the heated rods are pushed from the rod heating furnace to move forward along the roller table.

[0020] An infrared start-stop switch 5 is provided inside the bracket at the front end of the cast rod pushing mechanism 4, which is used to control the cast rod to stop moving. The output end of the infrared start-stop switch is connected to the input end of the PLC controller. When the cast rod moves to the infrared start-stop switch, the infrared start switch sends a stop signal to the PLC controller and the cast rod heating furnace to stop pushing the cast rod.

[0021] The temperature measuring mechanism includes a thermocouple 7 and a vertical cylinder. There are three vertical cylinders, all of which are arranged on a bracket above the V-shaped track 3 for casting rods. The telescopic rod of the vertical cylinder is located above the V-shaped track 3 for casting rods. The three thermocouples 7 are all arranged at the end of the telescopic rod of the vertical cylinder to measure the temperature of the casting rod 2. The output end of the thermocouple 7 is connected to the input end of the PLC controller, and the output end of the PLC controller is connected to the controlled end of the vertical cylinder. When measuring the temperature of the casting rod, the PLC controller sends a control instruction to the vertical cylinder, and the telescopic rod of the vertical cylinder moves downward, driving the thermocouple to move downward. When the thermocouple contacts the surface of the casting rod, the temperature is measured, and the measured temperature is transmitted to the PLC controller for analysis and processing.

[0022] A slide rail is provided on the bracket above the casting rod 2. The slide rail is parallel to the casting rod. Three sliders are provided in the slide rail. The sliders are matched with the slide rail. The sliders can move back and forth in the sliders. A driving motor is provided in each slider to drive the slider to move. The controlled end of the driving motor is connected to the output end of the PLC controller.

[0023] An infrared sensor is provided on the inverted L-shaped bracket near the cast rod heating furnace 1 to detect the end position of the cast rod, and the output end of the infrared sensor is connected to the input end of the PLC controller. When the cast rod moves to the infrared start-stop switch and stops, the infrared sensor detects the end position of the cast rod and sends it to the controller. The controller controls the distance of the driving motor on the slider to move according to the distance of the cast rod, so that the thermocouple detects the temperature of the three sections of the head, middle and tail of the cast rod respectively.

[0024] The vertical cylinder is arranged on the slider. When the slider moves, the vertical cylinder also moves accordingly, thereby driving the thermocouple 7 at the end of the vertical cylinder to move. The thermocouple 7 moves left and right on the slide rail, thereby ensuring that the temperature of the middle and tail of the casting rod head can be measured.

[0025] When the casting rod stops at the infrared start-stop switch, the infrared sensor detects the position of the tail of the casting rod. The PLC controller determines the position of the slider according to the length of the casting rod, and then controls the drive motor to move to the corresponding position so that the thermocouple is located at the head, middle and tail of the casting rod to measure the temperature at the three positions of the head, middle and tail of the casting rod. After the slider moves into place, the PLC controller controls the thermocouple to move downward through the vertical cylinder, and the temperature is measured when the thermocouple contacts the surface of the casting rod. The measured temperature is transmitted to the PLC controller for analysis and processing.

[0026] The pushing mechanism 4 includes a push plate and a push cylinder. The push cylinder is arranged inside the bracket 8, and the height of the push cylinder is the same as the height of the cast rod 2. The push plate is arranged at the end of the telescopic rod of the push cylinder to push the cast rod, and the push cylinder is used to control the action of the push plate. The controlled end of the push cylinder is connected to the output end of the PLC controller. When the thermocouple detects that the temperature of the cast rod is unqualified, the PLC controller controls the push cylinder to push forward, and the cast rod is pushed to the unqualified area by the push plate, and the selection is automatically performed, avoiding the safety hazards caused by manual handling of the cast rod.

[0027] The working principle of the present invention is that after the cast rod is heated in the cast rod heating furnace, it moves forward along the roller. When the cast rod moves to the infrared start-stop switch, the cast rod stops moving, and three thermocouples move to the head, middle and tail positions of the cast rod respectively. The thermocouples descend and contact the cast rod to measure the temperature, and the measured temperature is transmitted to the PLC controller for analysis. If the temperature of the cast rod meets the requirements, the cast rod continues to move forward and enters the extruder for extrusion; if the temperature of the cast rod does not meet the requirements, the cast rod pushing mechanism is activated, and the cast rod is pushed to the unqualified area through the push plate, thereby completing the selection of the cast rod. The present invention improves the accuracy of cast rod temperature detection, which not only ensures work efficiency, but also avoids the potential safety hazards caused by manual handling of cast rods.

Claims

1. An automatic temperature measurement and selection device for cast rods for extrusion, characterized in that: The invention comprises a V-shaped casting rod track (3) arranged between a discharge port of a casting rod heating furnace (1) and an extruder for passing casting rods (2); a temperature measuring mechanism for measuring the temperature of the casting rods is arranged above the V-shaped casting rod track (3) through an inverted L-shaped bracket (8); the temperature measuring mechanism is connected to a PLC controller (6) for controlling the temperature measuring mechanism; the output end of the temperature measuring mechanism is connected to the input end of the PLC controller; the output end of the PLC controller is connected to the controlled end of the driving motor; a casting rod pushing mechanism (4) for pushing unqualified casting rods (2) is arranged on the inner side of the bracket (8); the input end of the casting rod pushing mechanism is connected to the output end of the PLC controller; an infrared start-stop switch (5) for controlling the casting rods to stop moving is arranged on the inner side of the front end bracket (8) of the casting rod pushing mechanism (4); the output end of the infrared start-stop switch is connected to the output end of the PLC controller; The temperature measuring mechanism comprises three thermocouples (7) arranged under a bracket (8) above the V-shaped track (3) for detecting the temperature of the cast rods, and the output ends of the thermocouples are connected to the input end of the PLC controller; a slide rail parallel to the cast rods (2) is arranged on the bracket above the thermocouples (7), and each thermocouple (7) is provided with a slider matched with the slide rail, and a drive motor for driving the slider is arranged on the slider, and the controlled end of the drive motor is connected to the output end of the PLC controller; an infrared sensor for detecting the end position of the cast rods (2) is arranged on the inverted L-shaped bracket (8) close to the cast rod heating furnace (1), and the output end of the infrared sensor is connected to the input end of the PLC controller, and a vertical cylinder for driving the thermocouples (7) to move up and down is arranged at the bottom of the slider.

2. The automatic temperature measurement and selection device for cast rods for extrusion according to claim 1, characterized in that: The thermocouple is arranged at the end of the telescopic rod of the vertical cylinder, and the controlled end of the vertical cylinder is connected to the output end of the PLC controller.

3. The automatic temperature measurement and selection device for cast rods for extrusion according to claim 1, characterized in that: The cast rod pushing mechanism (4) comprises a push plate for pushing the cast rod (2) and a push cylinder for controlling the movement of the push plate, the push plate being arranged at the end of a telescopic rod of the push cylinder, and the controlled end of the push cylinder being connected to the output end of a PLC controller (6).

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