Electric heating wire fixing frame

Abstract

The utility model relates to an electric heating wire fixing frame, including first support board, second support board, screw rod and hanging rod, first support board and second support board are all open -hole plate structure, the open -hole plate structure includes screw rod fixed orifices and hanging rod fixed orifices, the quantity of hanging rod fixed orifices is multiple, the tangent of the centre of each hanging rod fixed orifices to screw rod fixed orifices is tangent to different tangent points, the distance of the centre of each hanging rod fixed orifices to corresponding tangent point is equal with the arc length sum of corresponding tangent point to the vertex on screw rod fixed orifices, the screw rod and hanging rod all set up between first support board and second support board, the screw rod is connected first support board and second support board through screw rod fixed orifices, the hanging rod is connected first support board and second support board through hanging rod fixed orifices, compared with the prior art, the utility model has the advantages of convenient installation, cutting effect is good.

Description

Technical Field

[0001] This utility model relates to the field of cutting devices, and in particular to a heating wire fixing bracket. Background Technology

[0002] In the thermal cutting process of PM2.5 air filters, when producing products with small thicknesses, i.e., when the thickness of the product is less than the outer diameter of the tensioning heating wire spring, the springs need to be arranged closely together. However, this results in the springs being too close to each other, causing them to collide and interfere with each other.

[0003] To address the aforementioned issues, using multiple sets of heating wires of varying lengths combined with multiple tension spring suspension points can prevent the proximity of adjacent tension springs from being too close. However, due to the varying lengths of the heating wires, the structure becomes overly complex, making installation and disassembly inconvenient. This can lead to errors by employees during actual operation, resulting in inconsistent tension of the suspended heating wires and ultimately causing poor appearance of the products produced by thermal cutting. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the existing technology, such as the different lengths of the heating wires, which make the structure too complicated, inconvenient to install and disassemble, easy for employees to make mistakes in actual operation, resulting in inconsistent tension of the suspended heating wires, and ultimately poor appearance of the products produced by thermal cutting. Therefore, this utility model provides a heating wire fixing bracket.

[0005] The objective of this utility model can be achieved through the following technical solutions: A heating wire holder includes a first support plate, a second support plate, a lead rod, and a hanging rod; Both the first support plate and the second support plate are perforated plate structures. The perforated plate structure includes a lead screw fixing hole and a hanging rod fixing hole. There are multiple hanging rod fixing holes. The tangent line drawn from the center of each hanging rod fixing hole to the lead screw fixing hole is tangent to the lead screw fixing hole at different tangency points. The distance from the center of each hanging rod fixing hole to the corresponding tangency point is equal to the sum of the arc length from the corresponding tangency point to the vertex of the lead screw fixing hole. Both the lead screw and the hanging rod are disposed between the first support plate and the second support plate. The lead screw is connected to the first support plate and the second support plate through the lead screw fixing hole, and the hanging rod is connected to the first support plate and the second support plate through the hanging rod fixing hole.

[0006] Preferably, the lead screw fixing hole is a countersunk hole, the lead screw fixing hole includes a first-stage groove, the bottom of the first-stage groove is provided with a second-stage through hole, the end of the lead screw is located in the first-stage groove, a connector is provided between the lead screw and the countersunk hole, and the connector passes through the second-stage through hole to connect the lead screw.

[0007] Preferably, the diameter of the lead screw is equal to the diameter of the first-order groove.

[0008] Preferably, there are multiple first-order grooves, which are symmetrically distributed on both sides of the perforated plate structure, and the second-order through holes connect the first-order grooves on both sides.

[0009] Preferably, the hanging rod fixing hole is located to the right of the lead screw fixing hole, and the vertical tangent on the left side of the hanging rod fixing hole is located to the right of the vertical tangent on the left side of the lead screw fixing hole.

[0010] Preferably, the minimum length of the tangent between the center of the hanging rod fixing hole and the lead screw fixing hole is 35-45mm greater than the maximum deformation of the tension spring.

[0011] Preferably, the lead screw fixing holes are interconnected to form an arc-shaped groove, and the distance from a point on the center line of the arc-shaped groove to the corresponding tangent point is equal to the sum of the arc length from the corresponding tangent point to the vertex of the lead screw fixing hole.

[0012] Preferably, the lead screw is made of a conductive material, and the lead screw is a copper lead screw.

[0013] Preferably, the distance between the centers of adjacent hanging rod fixing holes is greater than or equal to twice the diameter of the tension spring used.

[0014] Preferably, both the first support plate and the second support plate are made of insulating materials.

[0015] Compared with the prior art, the present invention has the following advantages: (1) In this solution, when the distance between the heating wires is too close, after the heating wires pass over the lead screw, the tension springs used to tighten the heating wires are fixed to different hanging rods. Since the two ends of the hanging rods are connected to the hanging rod fixing holes, and the sum of the distance from the center of each hanging rod fixing hole to the corresponding tangent point and the arc length from the corresponding tangent point to the vertex of the lead screw fixing hole is equal, the length of the heating wire from the contact lead screw to the connecting tension spring is also equal. This ensures that the length of each installed heating wire is the same, avoiding the need to distinguish the position when using heating wires of different lengths, which leads to complex structures and inconvenient installation. It simplifies the overall structure, and the consistent length of the heating wires simplifies the operation process for workers, improves installation efficiency, reduces the failure rate, and is safer and more efficient. Moreover, the tension of the suspended heating wires is the same, resulting in products with good appearance and high precision obtained by thermal cutting.

[0016] (2) This scheme uses a first-order groove to initially position and fix the lead screw, which helps to ensure the accuracy of the relative position between the lead screw fixing hole and the hanging rod fixing hole, thereby ensuring that the entire length of the heating wire after being wound by the lead screw and fixed on the pull rod by the tension spring remains equal, thus improving the accuracy of the heating wire operation.

[0017] (3) In this solution, by making the distance between the centers of the adjacent hanging rod fixing holes greater than or equal to twice the diameter of the tension spring used, interference between multiple heating wires is avoided when high-density installation of heating wires is required, and the two adjacent heating wires and tension springs are guaranteed not to affect each other. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the heating wire fixing bracket provided by this utility model; Figure 2 A schematic diagram of the structure of the perforated plate provided by this utility model; Figure 3 This is a front view of the perforated plate structure provided by this utility model; Figure 4 A schematic diagram of the structure of the perforated plate with an arc-shaped groove provided by this utility model; In the figure: 1. First support plate, 2. Second support plate, 3. Lead screw, 4. Hanging rod, 5. Lead screw fixing hole, 6. Hanging rod fixing hole, 51. First-stage groove, 52. Second-stage through hole, 7. Arc-shaped groove. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] Example 1 This embodiment provides a heating wire holder, such as Figure 1 As shown, it includes a first support plate 1, a second support plate 2, a lead screw 3, and a hanging rod 4; Both the first support plate 1 and the second support plate 2 are perforated plate structures. The perforated plate structure includes a lead screw fixing hole 5 and a hanging rod fixing hole 6. There are multiple hanging rod fixing holes 6. The tangent line drawn from the center of each hanging rod fixing hole 6 to the lead screw fixing hole 5 is tangent to the lead screw fixing hole 5 at different tangency points. The distance from the center of each hanging rod fixing hole 6 to the corresponding tangency point is equal to the sum of the arc length from the corresponding tangency point to the vertex of the lead screw fixing hole 5. Both the lead screw 3 and the hanging rod 4 are located between the first support plate 1 and the second support plate 2. The lead screw 3 is connected to the first support plate 1 and the second support plate 2 through the lead screw fixing hole 5, and the hanging rod 4 is connected to the first support plate 1 and the second support plate 2 through the hanging rod fixing hole 6.

[0026] Working principle: When the distance between the heating wires is too close, after the heating wires pass around the lead rod 3, the tension springs used to tension the heating wires are fixed to different hanging rods 4. Since the two ends of the hanging rod 4 are connected to the hanging rod fixing holes 6, and the distance from the center of each hanging rod fixing hole 6 to the corresponding tangent point is equal to the sum of the arc length from the corresponding tangent point to the vertex of the lead rod fixing hole 5, the length of the heating wire from the contact lead rod 3 to the connecting tension spring is also equal.

[0027] This solution addresses the issue of insufficient spacing between heating wires. After the heating wires pass over the lead screw 3, tension springs for tensioning the heating wires are fixed to different hanging rods 4. Since both ends of the hanging rod 4 are connected to hanging rod fixing holes 6, and the sum of the distance from the center of each fixing hole 6 to the corresponding tangent point and the arc length from the corresponding tangent point to the vertex of the lead screw fixing hole 5 is equal, the length of the heating wire from the contact lead screw 3 to the connecting tension spring is also equal. This ensures that all installed heating wires are of the same length, avoiding the need for position differentiation and the resulting complex and inconvenient installation when using heating wires of different lengths. The overall structure is simplified, and the consistent heating wire length simplifies the operator's process, improves installation efficiency, reduces the failure rate, and enhances safety and efficiency. Furthermore, the uniform tension of the suspended heating wires results in products with good appearance and high precision after thermal cutting.

[0028] As a preferred embodiment, such as Figure 2-3 As shown in the figure, the lead screw fixing hole 5 is a countersunk hole, which includes a first-stage groove 51. A second-stage through hole 52 is provided at the bottom of the first-stage groove 51. The end of the lead screw 3 is located within the first-stage groove 51. A connector is provided between the lead screw 3 and the countersunk hole, and the connector passes through the second-stage through hole 52 to connect the lead screw 3. The diameter of the lead screw 3 is equal to the diameter of the first-stage groove 51.

[0029] The lead screw 3 is initially fixed and positioned by the first-order groove 51, which helps to ensure the accuracy of the relative position between the lead screw fixing hole 5 and the hanging rod fixing hole 6. This ensures that the entire length of the heating wire, after being wound around the lead screw 3 and fixed to the pull rod 4 by the tension spring, remains equal, thereby improving the accuracy of the heating wire operation.

[0030] Specifically, there are multiple first-order grooves 51, which are symmetrically distributed on both sides of the perforated plate structure, and second-order through holes 52 connect the first-order grooves 51 on both sides.

[0031] As a preferred implementation method, such as Figure 3 As shown, the hanging rod fixing hole 6 is located to the right of the lead screw fixing hole 5, and the vertical tangent on the left side of the hanging rod fixing hole 6 is located to the right of the vertical tangent on the left side of the lead screw fixing hole 5. This ensures that the heating wire is compressed against the lead screw 3, thereby tensioning the heating wire. At the same time, it ensures that the hanging rod 4, which is fixed through the hanging rod fixing hole 6, will not interfere with the normal fixing and use of the heating wire.

[0032] In a preferred embodiment, the minimum length of the tangent between the center of the hanging rod fixing hole 6 and the lead screw fixing hole 5 is 35-45mm larger than the maximum deformation of the tension spring. This ensures that during operation, when the heating wire is stressed and stretches the tension spring, the reserved tangent length guarantees sufficient extension after stretching. Specifically, such as Figure 4As shown, the lead screw fixing holes 5 are interconnected to form an arc-shaped groove 7. The distance from a point on the center line of the arc-shaped groove 7 to the corresponding tangent point is equal to the sum of the arc length from the corresponding tangent point to the vertex of the lead screw fixing hole 5.

[0033] The lead screw 3 is made of conductive material and is a copper lead screw.

[0034] In a preferred embodiment, the distance between the centers of adjacent mounting holes 6 is greater than or equal to twice the diameter of the tension spring used. This prevents interference between the tension springs on adjacent mounting rods 4 after the heating wire is suspended from the mounting rod 4 by the tension spring.

[0035] Both the first support plate 1 and the second support plate 2 are made of insulating material. This is to prevent the connecting plates from generating heat after power is applied, which could affect the stability of the structure.

[0036] Based on the preferred embodiments described above, this embodiment proposes a specific implementation method, which is as follows: like Figure 1 As shown, in this embodiment, the connecting plate is made of insulating material. A non-penetrating circular countersunk hole is formed on the plate, with a small penetrating hole at the center of the countersunk hole. A tangent line is drawn from the circular countersunk hole, with the tangent point forming an arc on the circle of the countersunk hole. A penetrating hole is formed at the other end of the tangent line. The circular countersunk hole is used to fix the copper lead screw, and the penetrating hole at the end of the tangent line is used to fix the tension spring hook rod. The connecting plate also has bolt holes for fixing it to the outer frame.

[0037] Establish a coordinate system with the center of the copper lead screw as the origin of the XY coordinate system, the horizontal direction as the X-axis, and the vertical direction as the Y-axis. Mark the angle formed by the line connecting the point of tangency to the center of the circle and the x-axis as... (Radian measure), the length of the portion of the heating wire wound around the copper lead screw and the tangent length are marked as follows: The radius of the copper lead screw is marked as Therefore, it is possible to calculate the value set in the given conditions. In the case of different values The positions of the ends of each tangent (i.e., the fixing holes of the hanging rod) are as follows: ( , ) Circular countersunk hole radius It has the same radius as the copper lead screw.

[0038] Specifically, the tangent length is selected based on the specifications of the tension spring used in the hot cutting machine and the maximum tension on the heating wire. The minimum tangent length should be greater than the length of the tension spring after deformation under the maximum tension received by the heating wire when the hot cutting equipment is working.

[0039] The tangent length should also not be too large. It is generally advisable to set it to the length of the tension spring after deformation due to the maximum tension received by the heating wire when the thermal cutting equipment is working, plus 40mm. The number of tangents is not limited to two types. It can be set according to the actual specifications of the tension spring and the ratio of the outer diameter of the tension spring to the distance between the heating wires. For example, when using a tension spring with an outer diameter of 12mm and a distance between the heating wires of 4.5mm, three or more types of tangents and tension spring suspension points should be set. For example, when using a tension spring with an outer diameter of 12mm and a distance between the heating wires of 3mm, four or more types of tangents and tension spring suspension points should be set. If multiple tangents are used, the angle between the two tangents should not be too small to avoid interference between the tension springs on different tangents after the heating wire is suspended. The angle between the tangent and the working part of the heating wire should be less than [value missing]. The angle formed between the tangent and the working part of the heating wire should be greater than or equal to... .

[0040] On the same set of insulating connecting plates, the length of the heating wire wound around the copper wire rod and the tangent length are... It is the only one. Can be all within the range The penetrating holes at the ends of each tangent line are continuously cut, and the penetrating holes are changed into arc-shaped grooves. This embodiment provides an optional specific example as follows: The insulating connecting plate is a rectangular bakelite block with a long side of 300mm, a short side of 200mm, and a height of 30mm.

[0041] The countersunk hole is located in the middle of the insulating connecting plate, 150mm from the short side and 40mm from the long side; Countersunk hole radius The diameter is 20mm, the depth is 10mm, and the countersunk hole has a concentric through hole with a diameter of 12mm. Set the length of the section of the heating wire wound around the copper wire rod and the tangent length. It is 150mm; Set the position of the tangent end as follows: Figure 3 As shown below, the coordinate position is (101.77, -81.85). A through hole is set at this coordinate point, with the center of the through hole located on the tangent line. The circle of the through hole coincides with the end of the tangent line, and the diameter is 6mm. Set the position of the tangent end as follows: Figure 3 As shown in the middle, the coordinate position is (115.58, -20). A through hole is set at this coordinate point, the center of the through hole is located on the tangent, the circle of the through hole coincides with the end of the tangent, and the diameter is 6mm. Set the position of the tangent end as follows: Figure 3As shown above, at the coordinate position (103.63, 38.74), a through hole is set at this coordinate point. The center of the through hole is located on the tangent line, and the circle of the through hole coincides with the end of the tangent line. The diameter is 6mm. The countersunk hole is used to fit the bolt to fix the copper lead screw, and the through hole at the end of the tangent is used to fit the bolt to fix the tension spring hook rod.

[0042] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A heating wire holder, characterized in that, It includes a first support plate (1), a second support plate (2), a lead screw (3), and a hanging rod (4); The first support plate (1) and the second support plate (2) are both perforated plate structures. The perforated plate structure includes a lead screw fixing hole (5) and a hanging rod fixing hole (6). There are multiple hanging rod fixing holes (6). The tangent line drawn from the center of each hanging rod fixing hole (6) to the lead screw fixing hole (5) is tangent to the lead screw fixing hole (5) at different tangent points. The distance from the center of each hanging rod fixing hole (6) to the corresponding tangent point is equal to the sum of the arc length from the corresponding tangent point to the vertex of the lead screw fixing hole (5). The lead screw (3) and the hanging rod (4) are both disposed between the first support plate (1) and the second support plate (2). The lead screw (3) is connected to the first support plate (1) and the second support plate (2) through the lead screw fixing hole (5). The hanging rod (4) is connected to the first support plate (1) and the second support plate (2) through the hanging rod fixing hole (6).

2. The heating wire holder according to claim 1, characterized in that, The lead screw fixing hole (5) is a countersunk hole. The lead screw fixing hole (5) includes a first-order groove (51). The bottom of the first-order groove (51) is provided with a second-order through hole (52). The end of the lead screw (3) is located in the first-order groove (51). A connector is provided between the lead screw (3) and the countersunk hole. The connector passes through the second-order through hole (52) to connect the lead screw (3).

3. The heating wire holder according to claim 2, characterized in that, The diameter of the lead screw (3) is equal to the diameter of the first-order groove (51).

4. The heating wire holder according to claim 2, characterized in that, The number of the first-order grooves (51) is multiple, and the first-order grooves (51) are symmetrically distributed on both sides of the perforated plate structure. The second-order through hole (52) connects the first-order grooves (51) on both sides.

5. A heating wire holder according to claim 1, characterized in that, The hanging rod fixing hole (6) is located to the right of the lead screw fixing hole (5), and the vertical tangent on the left side of the hanging rod fixing hole (6) is located to the right of the vertical tangent on the left side of the lead screw fixing hole (5).

6. The heating wire holder according to claim 1, characterized in that, The minimum length of the tangent between the center of the hanging rod fixing hole (6) and the lead screw fixing hole (5) is 35-45mm greater than the maximum deformation of the tension spring.

7. The heating wire holder according to claim 1, characterized in that, The screw fixing holes (5) are interconnected to form an arc-shaped groove (7). The distance from a point on the center line of the arc-shaped groove (7) to the corresponding tangent point is equal to the sum of the arc length from the corresponding tangent point to the vertex of the screw fixing hole (5).

8. The heating wire holder according to claim 1, characterized in that, The lead screw (3) is made of conductive material and is a copper lead screw.

9. A heating wire holder according to claim 1, characterized in that, The distance between the centers of adjacent hanging rod fixing holes (6) is greater than or equal to twice the diameter of the tension spring used.

10. A heating wire holder according to claim 1, characterized in that, The first support plate (1) and the second support plate (2) are both made of insulating materials.

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