Electrical heating filament elongation device

Abstract

The utility model discloses a kind of electric heating wire lengthening device, linear guide is provided on base, first fixed seat, second fixed seat are connected with guide rail, and the initial position of both is interval arrangement, electric heating wire is located between first fixed seat, second fixed seat, and the both ends of electric heating wire are respectively positioned and connected with first fixed seat, second fixed seat, first fixed seat, second fixed seat are respectively connected with a driving source, and driving source drives first fixed seat, second fixed seat moves along guide rail opposite to lengthen electric heating wire. By first fixed seat, second fixed seat positioning and connecting electric heating wire, and first fixed seat, second fixed seat linearly stretch electric heating wire, to keep lengthening electric heating wire, first fixed seat, second fixed seat are driven by different driving sources respectively, by the same speed, rate, stroke design of both, to keep evenly stretching electric heating wire, lengthening device is suitable for electric heating wire of different original length, and is suitable for different lengthening length.

Description

Technical Field

[0001] This utility model relates to an electric heating wire production device, and in particular to an electric heating wire elongation device. Background Technology

[0002] Electric heating wires are widely used in industrial equipment and consumer products, such as heating elements in metallurgical machinery, chemical reaction vessels, and ceramic sintering furnaces, as well as heating components in household appliances like electric kettles and electric heaters. Electric heating wires are generally made of nickel-chromium alloy wire or copper-nickel alloy wire, wound on a spool in different layouts such as single-layer spiral, double-layer spiral, and parallel spacing. Single-layer and double-layer spirals are tightly wound and require further stretching. The main purposes of stretching are: ensuring no short circuits between the heating wires and maintaining uniform spacing; the heating wires generate high temperatures during use, and to prevent overheating and burnout, heat dissipation is necessary; stretching increases the surface area of ​​the heating wire, thereby improving heat dissipation efficiency and protecting it from overheating damage; the heating wires not only need to withstand high temperatures but also tension and gravity, and stretching increases their strength, allowing them to better withstand tension and gravity, thus extending their service life.

[0003] Traditional stretching operations are done manually, which is obviously not conducive to maintaining a uniform spacing. Furthermore, some existing stretching devices are not adapted to stretching electric heating wires of different lengths. Utility Model Content

[0004] Purpose of the utility model: In view of the above problems, the purpose of this utility model is to provide a heating element for a steam generator that, under the conditions of equal length and power of the heating tube, reduces the electric power density on the surface of the tube and the electric power density on the surface of the heating wire inside the tube, thereby reducing the temperature of the heating wire and improving its service life.

[0005] Technical solution: An electric heating wire elongation device includes a base, a first fixed seat, a second fixed seat, and a driving source. A linear guide rail is provided on the base. The first and second fixed seats are both connected to the guide rail. The initial positions of the first and second fixed seats are spaced apart. The electric heating wire is located between the first and second fixed seats. Both ends of the electric heating wire are respectively positioned and connected to the first and second fixed seats. The first and second fixed seats are each connected to one of the driving sources. The driving sources drive the first and second fixed seats to move in opposite directions along the guide rail to elongate the electric heating wire.

[0006] Furthermore, the first and second fixed seats are provided with a number of positioning grooves, the line connecting each group of positioning grooves is parallel to the straight line of the guide rail, the positioning grooves are matched with the two ends of the electric heating wire, and the two ends of the electric heating wire are respectively positioned and connected to the positioning grooves.

[0007] Furthermore, the driving source is a cylinder, the outer end of which is connected and fixed to the outer ends of the first fixed seat and the second fixed seat, and the cylinder body is installed and fixed to the base.

[0008] Furthermore, it also includes a limiting seat, which abuts against and limits the first fixed seat and the second fixed seat at the opposite movement strokes of the first fixed seat and the second fixed seat, and the limiting seat is installed on the base, serving as a mechanical limiting structure.

[0009] Ideally, the base has an adjustment groove at the mounting position of the limiting seat. The length direction of the adjustment groove is in the same direction as the straight line of the guide rail. The limiting seat is installed and connected to the base through the adjustment groove. The limiting seat moves along the adjustment groove to adjust the position, thereby adjusting the travel limit of the first fixed seat 2 and the second fixed seat 3.

[0010] Furthermore, a pressure plate is provided above the first fixed seat and / or the second fixed seat. The pressure plate is connected to the first fixed seat or the second fixed seat through a vertical guide post. The pressure plate moves vertically relative to the first fixed seat or the second fixed seat along the vertical guide post. After the two ends of the electric heating wire are respectively positioned and connected to the first fixed seat and the second fixed seat, the pressure plate descends and presses against the non-spiral section at the end of the electric heating wire to prevent the end of the electric heating wire from coming out of the positioning groove during the stretching process.

[0011] Ideally, the pressure plate is connected to a pneumatic power source.

[0012] Beneficial effects: The advantages of this utility model are: the elongation device uses the first fixed seat and the second fixed seat to position and connect the electric heating wire, and the first fixed seat and the second fixed seat to linearly stretch the electric heating wire, thereby maintaining the elongation of the electric heating wire. The first fixed seat and the second fixed seat are driven by different drive sources, and the same speed, rate and stroke design of the two ensures uniform stretching of the electric heating wire. The limit seat is used to mechanically limit the stroke, ensuring that there is no short circuit between the stretched electric heating wires and that the spacing is uniform. The elongation device of this application is suitable for electric heating wires of different original lengths and different stretching lengths, which facilitates production and maintains consistent product specifications, and is beneficial to controlling product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure and usage status of the present invention (the electric heating wire has been positioned and connected but has not yet been stretched);

[0014] Figure 2 for Figure 1 The top view has removed the electric heating wire and pressure plate, vertical guide column, and pneumatic source;

[0015] Figure 3 for Figure 2 The completed state diagram is shown in the extended version;

[0016] Figure 4 for Figure 1 A structural diagram on the left side of the middle section;

[0017] Figure 5 for Figure 1 A structural diagram on the right side of the middle section;

[0018] Figure 6 for Figure 2 A structural diagram on the left side of the middle section;

[0019] Figure 7 for Figure 2 The structural diagram on the right side of the middle section. Detailed Implementation

[0020] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0021] An electric heating wire elongation device, as shown in the attached document Figure 1 , 2 As shown in Figures 4 to 7, the system includes a base 1, a first fixed seat 2, a second fixed seat 3, a drive source 4, a guide rail 5, a limit seat 7, a pressure plate 9, and a vertical guide post 10.

[0022] A linear guide rail 5 is installed on the base 1. Figure 1 The guide rail is arranged in segments (or it can be a single guide rail). The first fixed seat 2 and the second fixed seat 3 are both connected to the guide rail 5 and move linearly along the guide rail 5, either opposite or in opposite directions. Slider blocks 21 and 31 can be respectively installed at the bottom of the first fixed seat 2 and the second fixed seat 3 to match and connect with the guide rail 5. The initial positions of the first fixed seat 2 and the second fixed seat 3 are spaced apart (as shown in the attached diagram). Figure 1 , 2 The electric heating wire 11 is located between the first fixed seat 2 and the second fixed seat 3.

[0023] Positioning grooves 6 are respectively provided on the first fixed base 2 and the second fixed base 3. The positioning grooves 6 on both sides correspond to each other to form several groups. The line connecting each group of positioning grooves 6 is parallel to the straight line of the guide rail 5. The two ends of the electric heating wire 11 are respectively positioned and connected to a group of positioning grooves 6, thereby positioning and connecting with the first fixed base 2 and the second fixed base 3. The shape of the positioning groove 6 matches the two ends of the electric heating wire. Combined with the design of the end of the electric heating wire, the end of the electric heating wire is locked in it and does not move.

[0024] The first fixed seat 2 and the second fixed seat 3 are each connected to a drive source 4, and each drive source independently controls the corresponding fixed seat. The drive source 4 is a cylinder, and the outer end of its piston rod 41 is connected and fixed to the outer ends of the first fixed seat 2 and the second fixed seat 3 through a connecting sleeve 43. Its cylinder body 42 is installed and fixed to the base 1. The piston rod 41 drives the first fixed seat 2 and the second fixed seat 3 to move in opposite directions along the guide rail 5 to lengthen the electric heating wire 11.

[0025] The pressure plate 9 is positioned above the first fixed seat 2 and / or the second fixed seat 3. Vertical guide columns 10 are installed on the first fixed seat 2 and the second fixed seat 3. The pressure plate 9 is connected to the vertical guide columns 10. A pneumatic source 91 is connected to the pressure plate 9. The pneumatic source 91 drives the pressure plate 9 to move vertically along the vertical guide columns 10. After the pressure plate 9 descends, it presses against the non-spiral section at the end of the electric heating wire. The pressure plate 9 moves synchronously and linearly with the first fixed seat 2 and / or the second fixed seat 3 to prevent the end of the electric heating wire from coming out of the positioning groove 6 during the stretching process.

[0026] The limiting seat 7 is mounted on the base 1, located between the first fixed seat 2 and the connected drive source 4, and between the second fixed seat 3 and the connected drive source 4. At the respective opposite movement strokes of the first fixed seat 2 and the second fixed seat 3, it abuts against the first fixed seat 2 and the second fixed seat 3 to mechanically limit movement, as shown in the attached diagram. Figure 3 As shown. The installation of the limiting seat 7 on the base 1 can be achieved by opening an adjustment groove 8 on the base 1. The length direction of the adjustment groove 8 is in the same direction as the straight line of the guide rail 5. The limiting seat 7 and the adjustment groove 8 are connected and fixed to the base 1 by bolts. The limiting seat 7 moves along the adjustment groove 8 to adjust the travel limit of the first fixed seat 2 and the second fixed seat 3.

[0027] The elongation device of this application uses a first fixed seat 2 and a second fixed seat 3 to position and connect the electric heating wire, and the first fixed seat 2 and the second fixed seat 3 to linearly stretch the electric heating wire to maintain the elongation of the electric heating wire. The first fixed seat 2 and the second fixed seat 3 are driven by different drive sources. By using the same speed, rate and stroke design of the two, the electric heating wire is stretched evenly. The limit seat 7 is used to mechanically limit the stroke to ensure that there is no short circuit between the electric heating wires after stretching and that the spacing is uniform. The elongation device of this application is suitable for electric heating wires of different original lengths and different stretching lengths, which facilitates production and maintains product specifications, and helps to control product quality.

Claims

1. A device for elongating an electric heating wire, characterized in that: The device includes a base (1), a first fixed seat (2), a second fixed seat (3), and a drive source (4). A linear guide rail (5) is provided on the base (1). The first fixed seat (2) and the second fixed seat (3) are both connected to the guide rail (5). The first fixed seat (2) and the second fixed seat (3) are initially arranged at intervals. The electric heating wire is located between the first fixed seat (2) and the second fixed seat (3). The two ends of the electric heating wire are respectively positioned and connected to the first fixed seat (2) and the second fixed seat (3). The first fixed seat (2) and the second fixed seat (3) are respectively connected to one of the drive sources (4). The drive source (4) drives the first fixed seat (2) and the second fixed seat (3) to move in opposite directions along the guide rail (5) to lengthen the electric heating wire.

2. The electric heating wire elongation device according to claim 1, characterized in that: Several sets of positioning grooves (6) are provided on the first fixed seat (2) and the second fixed seat (3). The line connecting each set of positioning grooves (6) is parallel to the straight line of the guide rail (5). The positioning grooves (6) are matched with the two ends of the electric heating wire, and the two ends of the electric heating wire are respectively positioned and connected to the positioning grooves (6).

3. The electric heating wire elongation device according to claim 1, characterized in that: The driving source (4) is a cylinder, the outer end of its piston rod is connected and fixed to the outer ends of the first fixed seat (2) and the second fixed seat (3), and its cylinder body is installed and fixed to the base (1).

4. The electric heating wire elongation device according to claim 1, characterized in that: It also includes a limiting seat (7), which abuts against and limits the first fixed seat (2) and the second fixed seat (3) at the opposite movement strokes of the first fixed seat (2) and the second fixed seat (3), and the limiting seat (7) is installed on the base (1).

5. The electric heating wire elongation device according to claim 4, characterized in that: An adjustment groove (8) is provided on the base (1) at the mounting position of the limiting seat (7). The length direction of the adjustment groove (8) is in the same direction as the straight line of the guide rail (5). The limiting seat (7) is installed and connected to the base (1) through the adjustment groove (8). The limiting seat (7) moves along the adjustment groove (8) to adjust its position.

6. The electric heating wire elongation device according to claim 1, characterized in that: A pressure plate (9) is also provided above the first fixed seat (2) and / or the second fixed seat (3). The pressure plate (9) is connected to the first fixed seat (2) or the second fixed seat (3) through a vertical guide post (10). The pressure plate (9) moves vertically relative to the first fixed seat (2) or the second fixed seat (3) along the vertical guide post (10). After the two ends of the electric heating wire are respectively positioned and connected to the first fixed seat (2) and the second fixed seat (3), the pressure plate (9) descends and presses against the non-spiral section at the end of the electric heating wire.

7. The electric heating wire elongation device according to claim 6, characterized in that: The pressure plate (9) is connected to the pneumatic power source.

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