A temperature measuring device

Abstract

The present invention provides a temperature measuring device, which relates to the technical field of aluminum rod temperature measuring devices. The device includes a fixed-side temperature measuring component, a moving-side temperature measuring component, and a surface temperature measuring component. The fixed-side temperature measuring component is installed behind the hollow motor permanent magnet of the permanent magnetic induction heating device, the moving-side temperature measuring component is arranged behind the moving-side gripper of the permanent magnetic induction heating device, and the surface temperature measuring component is arranged on the end face of the hollow motor permanent magnet. The design of the fixed-side temperature measuring component, the moving-side temperature measuring component, and the surface temperature measuring component in the present invention realizes the automatic and flexible acquisition of the core and surface temperatures of the aluminum rod. At the same time, the acquisition position is precisely controllable, which can greatly improve the detection accuracy of the gradient heating temperature of the aluminum rod, improve the metal plasticity of the final aluminum rod extrusion, and reduce the deformation resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of aluminum rod temperature measuring devices, and particularly relates to a temperature measuring device. Background Art

[0002] During the extrusion process of aluminum profiles, the deformation and friction of metals will cause an increase in the extrusion temperature of aluminum alloys, and the degree of increase in the extrusion temperature will increase with the increase in the extrusion speed. When the extrusion speed is too fast, uneven metal flow will occur, and defects such as pitting and cracks will appear on the product surface. On the contrary, when the extrusion speed is too slow, the production efficiency of extrusion will be affected. Before the aluminum profile extrusion process, it is necessary to perform preheating treatment on the aluminum rod, the purpose of which is to improve the metal plasticity, reduce the deformation resistance, and make the metal flow easily;

[0003] Gradient heating of aluminum rods means that before the aluminum rods are loaded into the extruder, a temperature gradient is formed in the length direction of the aluminum rods. Since the thermal conductivity of aluminum alloys is large, it is difficult to generate an accurate temperature gradient in the aluminum rods by using conventional fuel heating methods, and this gradient cannot be maintained. Therefore, an electromagnetic induction heating system must be used, and its heating method is to heat one end or in sections of the aluminum rods. By reasonably designing the temperature gradient of the aluminum rods, the extrusion speed can be increased, and the extrusion process can be approximated to isothermal extrusion;

[0004] When the existing electromagnetic induction heating system preheats the aluminum rods, it is necessary to manually continuously collect the temperatures at various positions in the length direction of the aluminum rods to ensure that every part of the aluminum rods is heated to the preheating temperature. This is not only time-consuming and laborious and prone to incorrect position collection, but also the temperature at the end of the rod core cannot be measured. Summary of the Invention

[0005] The present invention provides a temperature measuring device to solve at least one of the above-mentioned technical problems.

[0006] To solve the above technical problems, the present invention discloses a temperature measuring device, including a fixed-side temperature measuring component, a moving-side temperature measuring component, and a surface temperature measuring component. The fixed-side temperature measuring component is installed behind the hollow motor permanent magnet of the permanent magnet induction heating device, the moving-side temperature measuring component is arranged behind the moving-side gripper of the permanent magnet induction heating device, and the surface temperature measuring component is arranged on the end face of the hollow motor permanent magnet. The fixed-side temperature measuring component and the moving-side temperature measuring component are respectively used to collect the temperatures of both end faces of the aluminum rod, and the surface temperature measuring component is used to collect the surface temperatures at different positions in the length direction of the aluminum rod.

[0007] Preferably, the fixed-side temperature measuring component includes a fixed-side ejecting cylinder, the fixed-side ejecting cylinder is installed on the fixed-side cylinder fixing seat, the fixed-side cylinder fixing seat is installed on the permanent magnet induction heating device, the end of the fixed-side ejecting cylinder is fixedly connected with a fixed-side temperature measuring rod, a fixed-side reset elastic member is sleeved on the fixed-side temperature measuring rod, and a fixed-side gripper is installed outside the fixed-side temperature measuring rod.

[0008] Preferably, the temperature measuring component on the moving side includes an ejecting cylinder on the moving side, which is installed on the cylinder fixing seat on the moving side, and the cylinder fixing seat on the moving side is installed on the permanent magnetic induction heating device. The end of the ejecting cylinder on the moving side is fixedly connected with a temperature measuring rod on the moving side. A reset elastic member on the moving side is sleeved on the temperature measuring rod on the moving side, and a gripper on the moving side is installed outside the temperature measuring rod on the moving side.

[0009] Preferably, the surface temperature measuring component includes a surface temperature measuring cylinder support, a surface temperature measuring cylinder and a surface temperature measuring probe. The surface temperature measuring cylinder support is fixedly connected to the end face of the hollow motor permanent magnet, the surface temperature measuring cylinder is installed on the surface temperature measuring cylinder support, and the surface temperature measuring probe is installed at the working end of the surface temperature measuring cylinder.

[0010] Preferably, it further includes a gradient heating effect acceptance module for accepting the temperature gradient formed after heating the aluminum rod based on the detection value of the surface temperature measuring component;

[0011] Based on the detection value of the surface temperature measuring component, calculate the temperature gradient coefficient after heating the aluminum rod:

[0012] ;

[0013] Wherein, is the temperature gradient coefficient after heating the aluminum rod, m is the total number of gradient points collected by the surface temperature measuring component designed along the axis direction of the aluminum rod, is the temperature value collected by the surface temperature measuring component at the th gradient point, is the temperature value collected by the surface temperature measuring component at the th gradient point, is the reference gradient difference between adjacent gradient points;

[0014] If the temperature gradient coefficient after heating the aluminum rod exceeds the preset temperature gradient coefficient value range, the heating of the aluminum rod is unqualified, otherwise the heating is qualified.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) During the heating process of the present invention, the temperature measuring component on the fixed side and the temperature measuring component on the moving side are respectively in contact with the two end faces of the aluminum rod to collect the temperature values of the two end faces of the aluminum rod. The surface temperature measuring component can move along the length direction of the aluminum rod following the hollow motor permanent magnet, so as to collect the surface temperatures at different positions in the length direction of the aluminum rod. The designs of the temperature measuring component on the fixed side, the temperature measuring component on the moving side and the surface temperature measuring component realize the automatic and flexible collection of the core-surface temperature of the aluminum rod. At the same time, the collection positions are accurately controllable, which can greatly improve the detection accuracy of the aluminum rod gradient heating temperature of the aluminum rod, improve the metal plasticity of the final aluminum rod extrusion, and reduce the deformation resistance;

[0017] (2) The design of the gradient heating effect acceptance module of the present invention can achieve the acceptance of the aluminum rod during the temperature measurement process, ensuring that the temperature gradient of the aluminum rod after heating reaches the expected standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of the permanent magnet induction heating device of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the fixed-side temperature measurement component of the present invention;

[0021] Figure 3 is a three-dimensional view of the fixed-side temperature measurement component of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of the moving-side temperature measurement component of the present invention;

[0023] Figure 5 is a three-dimensional view of the moving-side temperature measurement component of the present invention;

[0024] Figure 6 is a three-dimensional view of the surface temperature measurement component of the present invention.

[0025] In the figures: 1, fixed-side temperature measurement component; 100, fixed-side ejecting cylinder; 101, fixed-side cylinder fixing seat; 102, fixed-side reset elastic member; 103, fixed-side temperature measurement rod; 104, fixed-side gripper; 2, moving-side temperature measurement component; 200, moving-side ejecting cylinder; 201, moving-side cylinder fixing seat; 202, moving-side reset elastic member; 203, moving-side temperature measurement rod; 3, surface temperature measurement component; 300, surface temperature measurement cylinder support; 301, surface temperature measurement cylinder; 302, surface temperature measurement probe; 4, permanent magnet induction heating device; 400, hollow motor permanent magnet; 401, moving-side gripper; 5, aluminum rod. DETAILED DESCRIPTION OF THE INVENTION

[0026] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention and are not intended to limit the present invention.

[0027] In addition, in the present invention, descriptions such as "first", "second", etc. are for descriptive purposes only, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] The present invention provides the following embodiments

[0029] Embodiment 1

[0030] An embodiment of the present invention provides a temperature measuring device, as Figures 1-6 shown, including a fixed-side temperature measuring component 1, a moving-side temperature measuring component 2, and a surface temperature measuring component 3. The fixed-side temperature measuring component 1 is installed behind the hollow motor permanent magnet 400 of the permanent magnet induction heating device 4. The moving-side temperature measuring component 2 is arranged behind the moving-side gripper 401 of the permanent magnet induction heating device 4. The surface temperature measuring component 3 is arranged on the end face of the hollow motor permanent magnet 400. The fixed-side temperature measuring component 1 and the moving-side temperature measuring component 2 are respectively used to collect the temperatures of both end faces of the aluminum rod 5, and the surface temperature measuring component 3 is used to collect the surface temperatures at different positions in the length direction of the aluminum rod 5.

[0031] Preferably, the permanent magnet induction heating device 4 includes a permanent magnet system, a mechanical transmission system, and a measurement and control system. The permanent magnet system consists of a hollow motor permanent magnet 400, a permanent magnet fixing seat, a heat insulation ring, and a permanent magnet air cooling system; the mechanical transmission system consists of an electric cylinder tightening device, an electric cylinder moving device, and a linear guide rail; the measurement and control system uses a PLC as the control core, integrating functions such as system control and protection, and realizing automatic operation;

[0032] The working process of the permanent magnet induction heating device 4 is as follows: The hollow motor permanent magnet 400 moves to the initial position at the fixed end under the action of the electric cylinder, the bracket rises to the standard position, then the manipulator or truss grabs the aluminum rod 5 and places it above the bracket. After that, the moving side gripper 401 moves and presses against the aluminum rod 5 under the action of the electric cylinder. Then the bracket descends to the initial position. After that, the hollow motor permanent magnet 400 moves to the position of the aluminum rod 5 under the action of the electric cylinder and starts rotating and heating. During the heating process, the electric cylinder drives the hollow motor permanent magnet 400 to reciprocate, realizing uniform or gradient heating of the aluminum rod. During this process, the fixed side temperature measuring component 1 and the moving side temperature measuring component 2 are respectively used to collect the temperatures of both end faces of the aluminum rod 5, and the surface temperature measuring component 3 is used to collect the surface temperatures at different positions in the length direction of the aluminum rod 5, realizing the monitoring of the core and surface temperatures of the aluminum rod 5. After heating is completed, the hollow motor permanent magnet 400 moves to the initial position at the fixed end, the bracket rises, moves backward assistingly, the end ejecting cylinder operates to eject the aluminum rod, and then the manipulator grabs the heated aluminum rod.

[0033] The working principle and beneficial effects of the above technical solution are as follows: During the heating process, the fixed side temperature measuring component 1 and the moving side temperature measuring component 2 are respectively in contact with both end faces of the aluminum rod 5 to collect the temperature values of both end faces of the aluminum rod 5. The surface temperature measuring component 3 can move along the length direction of the aluminum rod 5 following the hollow motor permanent magnet 400, so as to collect the surface temperatures at different positions in the length direction of the aluminum rod 5. The designs of the fixed side temperature measuring component 1, the moving side temperature measuring component 2, and the surface temperature measuring component 3 realize the automatic and flexible collection of the core and surface temperatures of the aluminum rod 5. At the same time, the collection positions are precisely controllable, which can greatly improve the detection accuracy of the gradient heating temperature of the aluminum rod 5, improve the metal plasticity of the final aluminum rod extrusion, and reduce the deformation resistance.

[0034] Embodiment 2

[0035] On the basis of Embodiment 1, the fixed side temperature measuring component 1 includes a fixed side ejecting cylinder 100. The fixed side ejecting cylinder 100 is installed on the fixed side cylinder fixing seat 101. The fixed side cylinder fixing seat 101 is installed on the permanent magnet induction heating device 4. The end of the fixed side ejecting cylinder 100 is fixedly connected with a fixed side temperature measuring rod 103. A fixed side reset elastic member 102 is sleeved on the fixed side temperature measuring rod 103. A fixed side gripper 104 is installed outside the fixed side temperature measuring rod 103.

[0036] The working principle and beneficial effects of the above technical solution are as follows: During temperature measurement, the fixed side ejecting cylinder 100 extends, driving the fixed side temperature measuring rod 103 to extend until it contacts the end face of the aluminum rod 5, thereby measuring the core temperature of one end.

[0037] Embodiment 3

[0038] On the basis of Embodiment 1, the moving-side temperature measurement assembly 2 includes a moving-side ejecting cylinder 200. The moving-side ejecting cylinder 200 is installed on a moving-side cylinder fixing seat 201, and the moving-side cylinder fixing seat 201 is installed on a permanent magnet induction heating device 4. A moving-side temperature measurement rod 203 is fixedly connected to the end of the moving-side ejecting cylinder 200. A moving-side reset elastic member 202 is sleeved on the moving-side temperature measurement rod 203, and a moving-side gripper 401 is installed on the outer side of the moving-side temperature measurement rod 203.

[0039] The working principle and beneficial effects of the above technical solution are as follows: During temperature measurement, the moving-side ejecting cylinder 200 extends, driving the moving-side temperature measurement rod 203 to extend until it contacts the end face of the aluminum rod 5, thereby measuring the temperature of the rod core at the other end.

[0040] Embodiment 4

[0041] On the basis of Embodiment 1, the surface temperature measurement assembly 3 includes a surface temperature measurement cylinder support 300, a surface temperature measurement cylinder 301, and a surface temperature measurement probe 302. The surface temperature measurement cylinder support 300 is fixedly connected to the end face of the hollow motor permanent magnet 400. The surface temperature measurement cylinder 301 is installed on the surface temperature measurement cylinder support 300, and the surface temperature measurement probe 302 is installed at the working end of the surface temperature measurement cylinder 301.

[0042] The working principle and beneficial effects of the above technical solution: During the movement of the hollow motor permanent magnet 400, the surface temperature measurement assembly 3 is driven to move. When the surface temperature measurement assembly 3 measures the temperature, the surface temperature measurement cylinder 301 extends, causing the surface temperature measurement probe 302 to contact the surface of the aluminum rod 5, thereby measuring the surface temperature of the aluminum rod 5.

[0043] Embodiment 5

[0044] On the basis of Embodiment 1, it further includes a gradient heating effect acceptance module for accepting the temperature gradient formed after heating the aluminum rod 5 based on the detection value of the surface temperature measurement assembly 3;

[0045] Based on the detection value of the surface temperature measurement assembly 3, calculate the temperature gradient coefficient of the aluminum rod 5 after heating:

[0046] ;

[0047] wherein, is the temperature gradient coefficient of the aluminum rod 5 after heating, m is the total number of gradient points collected by the surface temperature measurement assembly 3 designed along the axis direction of the aluminum rod 5, is the temperature value collected by the surface temperature measurement assembly 3 at the th gradient point, is the temperature value collected by the surface temperature measurement assembly 3 at the th gradient point, is the reference gradient difference between adjacent gradient points;

[0048] If the temperature gradient coefficient of the aluminum rod 5 after heating exceeds the preset temperature gradient coefficient value range, the heating of the aluminum rod 5 is unqualified; otherwise, the heating is qualified.

[0049] The working principle and beneficial effects of the above technical solution are as follows: Calculate the temperature gradient coefficient of the aluminum rod 5 after heating based on the detection value of the surface temperature measurement component 3. By comparing the temperature difference between two adjacent gradient points with the reference gradient difference between adjacent gradient points, obtain the temperature gradient coefficient of the aluminum rod 5 after heating. If the temperature gradient coefficient of the aluminum rod 5 after heating exceeds the preset temperature gradient coefficient value range, the heating of the aluminum rod 5 is unqualified; otherwise, the heating is qualified. The gradient heating effect acceptance module can achieve the acceptance of the aluminum rod 5 during the temperature measurement process.

[0050] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A temperature measuring device, characterized in that: The invention comprises a fixed-side temperature measuring component (1), a movable-side temperature measuring component (2) and a surface temperature measuring component (3), wherein the fixed-side temperature measuring component (1) is installed behind a hollow motor permanent magnet (400) of a permanent magnet induction heating device (4), the movable-side temperature measuring component (2) is arranged behind a movable-side gripper (401) of the permanent magnet induction heating device (4), and the surface temperature measuring component (3) is arranged on the end surface of the hollow motor permanent magnet (400). The fixed-side temperature measuring component (1) and the movable-side temperature measuring component (2) are respectively used to collect the temperatures of the two end surfaces of an aluminum rod (5), and the surface temperature measuring component (3) is used to collect the surface temperatures at different positions along the length direction of the aluminum rod (5); It also includes a gradient heating effect acceptance module, which is used to accept the temperature gradient formed after the aluminum rod (5) is heated based on the detection value of the surface temperature measurement component (3); Based on the detection value of the surface temperature measuring component (3), the temperature gradient coefficient of the aluminum rod (5) after heating is calculated: ； in, is the temperature gradient coefficient of the aluminum rod (5) after heating, m is the total number of gradient points collected by the surface temperature measurement component (3) designed along the axial direction of the aluminum rod (5), For the The temperature value collected by the surface temperature measurement component (3) at each gradient point, For the The temperature value collected by the surface temperature measurement component (3) at each gradient point, is the baseline gradient difference of adjacent gradient points; If the temperature gradient coefficient of the aluminum rod (5) after heating exceeds the preset temperature gradient coefficient value range, the heating of the aluminum rod (5) is unqualified; otherwise, the heating is qualified.

2. A temperature measuring device according to claim 1, characterized in that: The fixed side temperature measuring assembly (1) comprises a fixed side ejection cylinder (100), the fixed side ejection cylinder (100) being mounted on a fixed side cylinder fixing seat (101), the fixed side cylinder fixing seat (101) being mounted on a permanent magnet induction heating device (4), a fixed side temperature measuring rod (103) being fixedly connected to the end of the fixed side ejection cylinder (100), a fixed side reset elastic member (102) being sleeved on the fixed side temperature measuring rod (103), and a fixed side gripper (104) being mounted on the outer side of the fixed side temperature measuring rod (103).

3. A temperature measuring device according to claim 1, characterized in that: The mobile side temperature measuring assembly (2) comprises a mobile side ejection cylinder (200), the mobile side ejection cylinder (200) being mounted on a mobile side cylinder fixing seat (201), the mobile side cylinder fixing seat (201) being mounted on a permanent magnet induction heating device (4), a mobile side temperature measuring rod (203) being fixedly connected to the end of the mobile side ejection cylinder (200), a mobile side reset elastic member (202) being sleeved on the mobile side temperature measuring rod (203), and a mobile side gripper (401) being mounted on the outer side of the mobile side temperature measuring rod (203).

4. A temperature measuring device according to claim 1, characterized in that: The surface temperature measuring assembly (3) comprises a surface temperature measuring cylinder support (300), a surface temperature measuring cylinder (301) and a surface temperature measuring probe (302); the surface temperature measuring cylinder support (300) is fixedly connected to the end surface of the hollow motor permanent magnet (400); the surface temperature measuring cylinder (301) is mounted on the surface temperature measuring cylinder support (300); and the surface temperature measuring probe (302) is mounted on the working end of the surface temperature measuring cylinder (301).

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