Short-circuit-preventing temperature-limiting magnesium oxide electric heating tube and processing equipment

Abstract

The utility model discloses an anti-short circuit temperature limiting magnesium oxide electric heating tube and processing equipment, including outer tube, electric heating wire and insulating rod, the insulating rod is located in the outer tube, the electric heating wire is wound on the outer surface of the insulating rod, magnesium oxide powder is filled in the gap between the outer tube and the insulating rod, and the outer tube is located in the outer tube. A plurality of first mounting holes and a plurality of second mounting holes are formed in the end of the insulating rod, electrode rods are arranged in the first mounting holes, metal wires are arranged in the second mounting holes, a mounting groove is formed in the upper surface of the table body, a first threaded rod is rotatably mounted in the mounting groove, and a second threaded rod is arranged in the mounting groove. The first threaded rod is symmetrically sleeved with sliding blocks in a threaded mode, placing openings are formed in the tops of the sliding blocks, and mounting openings are symmetrically formed in the tops of the sliding blocks. The device has the advantages that the electric heating tubes with different lengths and different sizes can be quickly pressed and fixed, and the practicability of the device and the machining efficiency of the electric heating tubes are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating tubes, in particular to a short-circuit-proof temperature-limited magnesium oxide electric heating tube and processing equipment. Background Art

[0002] Electric heating tubes are electrical components that convert electrical energy into thermal energy. They are generally composed of metal tubes, heating wires and magnesium oxide powder. In order to avoid short circuits caused by overheating, existing electric heating tubes use the method of detecting the change in the insulation material's own resistance under high temperature to prevent short circuits or limit the temperature.

[0003] During the production process of the electric heating tube, it is necessary to use processing equipment to cut both ends of the electric heating tube to remove the rubber plug and the excess parts of the tube ends. Before processing, the processing equipment needs to fix the electric heating tube to prevent the electric heating tube from moving during the processing. However, due to the various sizes of existing electric heating tubes, the processing equipment cannot quickly adjust itself to fix it according to the size of the electric heating tube to be processed, which has poor practicality and affects the processing efficiency of the electric heating tube. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a short-circuit-proof temperature-limited magnesium oxide electric heating tube and processing equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A short-circuit-proof and temperature-limited magnesium oxide electric heating tube comprises an outer tube, a heating wire and an insulating rod, wherein the insulating rod is located inside the outer tube, the heating wire is wound around the outer surface of the insulating rod, the gap between the outer tube and the insulating rod is filled with magnesium oxide powder, a plurality of first mounting holes and a plurality of second mounting holes are provided at the end of the insulating rod, an electrode rod is provided in the first mounting hole, and a metal wire is provided in the second mounting hole.

[0007] The cam is provided with a first threaded rod having two threaded ends at two ends, the first threaded rod being symmetrically threadedly sleeved with a slider, the top of the slider being provided with an arc-shaped placement opening for placing an outer tube, the top of the slider being symmetrically and horizontally provided with a mounting opening, the top of the slider being symmetrically and horizontally provided with a rotating shaft, the rotating shaft being fixedly sleeved with a gear, the surface of the slider being vertically slidably provided with a U-shaped mounting bracket, a plurality of rack rods being respectively meshed with a plurality of gears, the left and right side walls of the gear being fixedly provided with an L-shaped connecting rod, one end of the two connecting rods being fixedly provided with a supporting plate for pressing the outer tube, the two mounting brackets being controlled to move vertically together by a driving assembly, one end of the first threaded rod being fixedly provided with a mounting rod, and one end of the mounting rod passing through the cam.

[0008] In order to better achieve the above purpose, the utility model adopts a further technical solution: the sliding component includes a sliding groove vertically opened on the surface of the slider and a sliding rod with one end slidingly configured in the sliding groove, and one end of the sliding rod is fixedly connected to the surface of the mounting frame.

[0009] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the driving assembly includes a second threaded rod vertically rotatably installed on the upper surface of the platform, a slide plate threadedly sleeved on the second threaded rod, a hollow frame fixedly installed on one end of the slide plate, and two L-shaped connecting rods both slidably configured in the hollow frame, and one end of the two connecting rods is fixedly connected to the surfaces of the two mounting frames respectively.

[0010] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the wall of the placement opening and the surface of the abutment plate are both bonded with an anti-slip layer, and the material of the anti-slip layer is rubber.

[0011] In order to better achieve the above purpose, the utility model adopts a further technical solution: an adjusting wheel is fixedly installed on one end of the second threaded rod and the mounting rod, and an anti-slip pattern is provided on the surface of the adjusting wheel.

[0012] The advantages of the utility model are that through the cooperation between the first threaded rod, two sliders, multiple gears, multiple rack rods, multiple abutment plates and the driving assembly, the processing equipment can quickly complete the pressing and fixing of electric heating tubes of different lengths and sizes, thereby improving the practicality of the equipment and the processing efficiency of the electric heating tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the front three-dimensional partial cross-sectional structure of a short-circuit-proof and temperature-limited magnesium oxide electric heating tube proposed by the utility model;

[0014] Figure 2 This is a top-down perspective structural diagram of a short-circuit-proof and temperature-limited magnesium oxide electric heating tube processing equipment proposed by the utility model;

[0015] Figure 3 It is a partial three-dimensional structural schematic diagram of a slider in a processing device for a short-circuit-proof and temperature-limited magnesium oxide electric heating tube proposed by the utility model;

[0016] Figure 4 for Figure 3 A magnified view of the structure in the middle.

[0017] In the figure: 1 outer tube, 2 heating wire, 3 insulating rod, 4 magnesium oxide powder, 5 electrode rod, 6 metal wire, 7 platform, 8 first threaded rod, 9 slider, 10 placement port, 11 rotating shaft, 12 gear, 13 mounting frame, 14 rack rod, 15 connecting rod, 16 abutment plate, 17 slide groove, 18 slide rod, 19 second threaded rod, 20 slide plate, 21 hollow frame, 22 connecting rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] Reference Figure 1-Figure 4 As shown, a short-circuit-proof and temperature-limited magnesium oxide electric heating tube comprises an outer tube 1, a heating wire 2 and an insulating rod 3, wherein the insulating rod 3 is located inside the outer tube 1, the heating wire 2 is wound around the outer surface of the insulating rod 3, and the gap between the outer tube 1 and the insulating rod 3 is filled with magnesium oxide powder 4, a plurality of first mounting holes and a plurality of second mounting holes are provided at the end of the insulating rod 3, an electrode rod 5 is provided in the first mounting hole, and a metal wire 6 is provided in the second mounting hole.

[0020] The above-mentioned short-circuit-proof and temperature-limited magnesium oxide electric heating tube processing equipment includes a table 7, a mounting groove is horizontally opened on the upper surface of the table 7, a first threaded rod 8 with opposite thread directions at the left and right ends is horizontally rotatably installed in the mounting groove, a slider 9 is symmetrically threadedly sleeved on the first threaded rod 8, an arc-shaped placement opening 10 for placing the outer tube 1 is opened on the top of the slider 9, a mounting opening is symmetrically opened horizontally on the top of the slider 9, a rotating shaft 11 is horizontally rotatably installed in the mounting opening, a gear 12 is fixedly sleeved on the rotating shaft 11, and a U-shaped mounting frame 13 is configured on the surface of the slider 9 for vertical sliding through a sliding component, and the sliding component includes a vertical A slide groove 17 is provided on the surface of the slider 9, and a slide rod 18 with one end slidingly arranged in the slide groove 17, one end of the slide rod 18 is fixedly connected to the surface of the mounting frame 13, and rack rods 14 are symmetrically and vertically fixedly installed on the mounting frame 13. Multiple rack rods 14 are respectively meshed and connected with multiple gears 12, and L-shaped connecting rods 15 are fixedly installed on the left and right side walls of the gear 12. One end of the two connecting rods 15 is fixedly installed with a support plate 16 for pressing the outer tube 1, and one end of the first threaded rod 8 is fixedly installed with a mounting rod, and one end of the mounting rod passes through the platform 7. The two mounting frames 13 are controlled to move vertically together through the driving assembly.

[0021] First, by rotating the first threaded rod 8, the two sliders 9 symmetrically threadedly sleeved on the first threaded rod 8 are controlled to move horizontally relative to each other until the distance between the two sliders 9 is sufficient to place the outer tube 1 to be processed. At this time, the outer tube 1 to be processed is placed in the placement opening 10 opened on the upper surfaces of the two sliders 9, and then the two mounting frames 13 are controlled to move vertically together by the driving assembly. During the movement, the multiple rack rods 14 will also move up together, and the multiple gears 12 respectively meshed with the multiple rack rods 14 will rotate together, and the multiple abutment plates 16 will also rotate together until the multiple abutment plates 16 are rotated to tightly abut against the outer tube 1, so that the outer tube 1 to be processed can be tightly pressed and fixed in the two placement openings 10, which is convenient and quick, and can quickly complete the pressing and fixing of electric heating tubes of different lengths and sizes, thereby improving the practicability of the equipment and the processing efficiency of the electric heating tubes.

[0022] The driving assembly includes a second threaded rod 19 vertically rotatably mounted on the upper surface of the platform 7, a slide plate 20 threadedly sleeved on the second threaded rod 19, a hollow frame 21 fixedly mounted on one end of the slide plate 20, and two L-shaped connecting rods 22 both slidably arranged in the hollow frame 21, one end of the two connecting rods 22 are respectively fixedly connected to the surfaces of the two mounting frames 13, and one end of the second threaded rod 19 and the mounting rod are fixedly mounted with an adjusting wheel, and the surface of the adjusting wheel is provided with anti-skid patterns, which can increase the friction between the palm and the contact surface of the adjusting wheel; When the two sliders 9 move laterally relative to each other, the two connecting rods 22 will also move laterally relative to each other in the hollow frame 21. When the second threaded rod 19 is rotated and the slide plate 20 moves vertically with the hollow frame 21, the two connecting rods 22 with one end slidingly configured in the hollow frame 21 will also move vertically with the two mounting frames 13 respectively, thereby controlling the multiple rack rods 14 to move up or down together, and then controlling the multiple gears 12 to rotate with the multiple abutment plates 16 respectively, which is convenient and quick.

[0023] The wall of the placement port 10 and the surface of the abutment plate 16 are both bonded with an anti-skid layer made of rubber. The rubber anti-skid layer has good elasticity and viscosity, thereby increasing the friction between the contact surfaces of the placement port 10 and the abutment plate 16 and the outer tube 1.

[0024] In the utility model, firstly, by rotating the first threaded rod 8, two sliders 9 symmetrically threadedly sleeved on the first threaded rod 8 are controlled to move relative to each other laterally, until the distance between the two sliders 9 is sufficient to place the outer tube 1 to be processed. At this time, the outer tube 1 to be processed is placed in the placement opening 10 opened on the upper surfaces of the two sliders 9, and then the two mounting frames 13 are controlled to move vertically together by the driving assembly. During the movement, the multiple rack rods 14 will also move up together, and the multiple gears 12 respectively meshed with the multiple rack rods 14 will rotate together, and the multiple abutment plates 16 will also rotate together, until the multiple abutment plates 16 are all rotated to tightly abut against the outer tube 1, the outer tube 1 to be processed can be tightly pressed and fixed in the two placement openings 10, which is convenient and quick, and can quickly complete the pressing and fixing of electric heating tubes of different lengths and sizes, thereby improving the practicality of the equipment and the processing efficiency of the electric heating tubes.

Claims

1. A short-circuit-proof and temperature-limited magnesium oxide electric heating tube and processing equipment, comprising an outer tube (1), a heating wire (2) and an insulating rod (3), characterized in that: The insulating rod (3) is located inside the outer tube (1), the heating wire (2) is wound around the outer surface of the insulating rod (3), the gap between the outer tube (1) and the insulating rod (3) is filled with magnesium oxide powder (4), a plurality of first mounting holes and a plurality of second mounting holes are formed at the end of the insulating rod (3), an electrode rod (5) is provided in the first mounting hole, and a metal wire (6) is provided in the second mounting hole.

2. The short-circuit-proof temperature-limited magnesium oxide electric heating tube and processing equipment according to claim 1, characterized in that: The invention comprises a platform (7), wherein a mounting groove is horizontally provided on the upper surface of the platform (7), wherein a first threaded rod (8) having threads at the left and right ends in opposite directions is horizontally rotatably installed in the mounting groove, wherein a slider (9) is symmetrically threadedly sleeved on the first threaded rod (8), wherein an arc-shaped placement opening (10) for placing an outer tube (1) is provided on the top of the slider (9), wherein a mounting opening is symmetrically provided on the top of the slider (9), wherein a rotating shaft (11) is horizontally rotatably installed in the mounting opening, wherein a gear (12) is fixedly sleeved on the rotating shaft (11), and wherein the surface of the slider (9) slides vertically via a sliding component. A U-shaped mounting frame (13) is provided, and rack rods (14) are symmetrically and vertically fixedly mounted on the mounting frame (13). A plurality of rack rods (14) are respectively meshed and connected with a plurality of gears (12). L-shaped connecting rods (15) are fixedly mounted on the left and right side walls of the gears (12). A support plate (16) for pressing the outer tube (1) is fixedly mounted on one end of the two connecting rods (15). The two mounting frames (13) are controlled by a driving assembly to move vertically together. A mounting rod is fixedly mounted on one end of the first threaded rod (8), and one end of the mounting rod passes through the platform (7).

3. The short-circuit-proof temperature-limited magnesium oxide electric heating tube and processing equipment according to claim 2, characterized in that: The sliding component comprises a sliding groove (17) vertically opened on the surface of the sliding block (9) and a sliding rod (18) with one end slidingly arranged in the sliding groove (17); one end of the sliding rod (18) is fixedly connected to the surface of the mounting frame (13).

4. The short-circuit-proof temperature-limited magnesium oxide electric heating tube and processing equipment according to claim 2, characterized in that: The driving assembly comprises a second threaded rod (19) vertically rotatably mounted on the upper surface of the platform (7), a slide plate (20) threadedly sleeved on the second threaded rod (19), a hollow frame (21) fixedly mounted on one end of the slide plate (20), and two L-shaped connecting rods (22) both slidably arranged in the hollow frame (21), one end of the two connecting rods (22) being fixedly connected to the surfaces of the two mounting frames (13) respectively.

5. The short-circuit-proof temperature-limited magnesium oxide electric heating tube and processing equipment according to claim 2, characterized in that: The wall of the placement opening (10) and the surface of the abutment plate (16) are both bonded with an anti-slip layer, and the material of the anti-slip layer is rubber.

6. The short-circuit-proof temperature-limited magnesium oxide electric heating tube and processing equipment according to claim 4, characterized in that: An adjusting wheel is fixedly mounted on one end of the second threaded rod (19) and the mounting rod, and an anti-slip pattern is provided on the surface of the adjusting wheel.

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