Wave-soldering double-layer heating wire structure and wave-soldering equipment

Abstract

The utility model discloses a wave-soldering double-layer heating wire structure and a wave-soldering device. The wave-soldering double-layer heating wire structure comprises a framework, a heating wire and a heating wire, the heating wire frameworks are arranged on the framework, and the number of the heating wire frameworks is at least two; and the two groups of heating wires are respectively arranged on the two groups of heating wire frameworks. According to the wave-soldering double-layer heating wire structure and the wave-soldering equipment, under the condition that the length, the heating power and the wire diameter of the heating wire are not changed, the heating wire is arranged to be of a double-layer structure, the installation length of the heating wire is increased, the heat dissipation area of the heating wire is increased, the heat dissipation efficiency is improved, and the temperature of a heating body is reduced; and under the condition that the length and the heating power of the heating wire are not changed, the mounting length of the heating wire, the wire diameter of the heating wire, the surface area of the heating wire and the lower surface load of the heating wire are increased through the double-layer structure, so that the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and more specifically, to a wave soldering double-layer heating wire structure. Furthermore, this utility model also relates to a wave soldering device including the aforementioned wave soldering double-layer heating wire structure. Background Technology

[0002] In existing wave soldering equipment, preheating types are divided into hot air convection heating and infrared (IR) radiation heating. The heat source for hot air convection heating is primarily a resistance heating wire. The heat dissipation efficiency and surface load of the resistance heating wire directly affect the accuracy of preheating temperature control and the lifespan of the heating wire. The basic formula for calculating resistance is R = ρL / S (where R represents the resistance value, ρ represents the resistivity, L represents the length of the conductor, and S represents the cross-sectional area of ​​the conductor). A thicker heating wire diameter results in a lower resistance value per unit length, a longer total wire length, and a lower surface load; conversely, a thinner heating wire diameter results in a higher resistance value per unit length, a shorter total wire length, and a higher surface load. In existing hot air preheating structures, the heating wire assembly is a single-layer structure with fixed length L and power P. This limits the selection of either a small-diameter heating wire with a large winding gap and a high surface load, or a large-diameter heating wire with a small winding gap and a low surface load. Neither option can satisfy the requirements of high heat dissipation efficiency and low surface load, thus leading to a short lifespan for the resistance heating wire.

[0003] In conclusion, how to improve the lifespan of resistance heating wires is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a wave soldering double-layer heating wire structure, which can increase the heat dissipation area and wire diameter of the heating wire, reduce surface load, and extend service life.

[0005] Another objective of this invention is to provide a wave soldering device that includes the aforementioned double-layer heating wire structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wave soldering double-layer heating wire structure includes:

[0008] skeleton;

[0009] A heating wire frame is provided on the frame, and the heating wire frame is provided in at least two;

[0010] The heating wire is provided in two sets, and the two sets of heating wires are respectively arranged in the two sets of heating wire skeletons.

[0011] Preferably, the frame is a U-shaped structure, and the heating wire frame includes two positioning rods, with a connecting rod between the two positioning rods, the connecting rod being used to achieve parallel arrangement of the two positioning rods.

[0012] Preferably, the heating wire frame is further provided with a positioning component, the positioning component including positioning rings, and multiple positioning rings are evenly distributed on each positioning rod, and the positioning rings on two positioning rods are fixedly connected.

[0013] Preferably, the heating wire has a spiral structure and is disposed through the positioning ring.

[0014] Preferably, an insulating tube is provided on the inner circumference of the heating wire.

[0015] Preferably, the frame is further provided with a limiting piece for restricting the axial movement of the heating wire.

[0016] Preferably, the side of the skeleton is provided with a plurality of through holes.

[0017] Preferably, the heating wire skeleton is detachably connected to the skeleton.

[0018] Preferably, the two sets of heating wires are connected in series, and each set of heating wires is provided with an electrode.

[0019] A wave soldering device includes a wave soldering double-layer heating wire structure, wherein the wave soldering double-layer heating wire structure is any one of the wave soldering double-layer heating wire structures described above.

[0020] This utility model provides a wave soldering double-layer heating wire structure. Compared with the existing heating wire structure, this structure can increase the installation length of the heating wire, increase the heat dissipation area of ​​the heating wire, improve heat dissipation efficiency, and reduce the temperature of the heating element by setting the heating wire to a double-layer structure, without changing the heating wire length, heating power, and heating wire diameter. Similarly, without changing the heating wire length and heating power, the double-layer structure can increase the installation length of the heating wire, increase the heating wire diameter, increase the surface area of ​​the heating wire, and reduce the load on the lower surface of the heating wire, thereby extending the service life. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the wave soldering double-layer heating wire structure provided by this utility model.

[0023] Figure 2 This is a schematic diagram showing the disassembled structure of the wave soldering double-layer heating wire structure provided by this utility model.

[0024] Figure label:

[0025] 1-Frame; 2-Heating wire frame; 3-Heating wire; 4-Insulating tube; 5-Limiting plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The core of this invention is to provide a wave soldering double-layer heating wire structure, which has improved heat dissipation capacity and extended service life compared to existing technologies.

[0028] Another core aspect of this invention is to provide a wave soldering device that includes the aforementioned double-layer heating wire structure.

[0029] It should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", and "rear" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of facilitating the description of this application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] This application provides a wave soldering double-layer heating wire structure, comprising: a frame 1, a heating wire frame 2, and a heating wire 3;

[0031] Among them, skeleton 1;

[0032] The heating wire frame 2 is disposed on the frame 1, and the heating wire frame 2 is provided with at least two sets;

[0033] The heating wire 3 is provided in two sets, and the two sets of heating wire 3 are respectively set in the two sets of heating wire skeletons 2.

[0034] For details, please refer to the appendix. Figure 1The frame 1 serves as the base, and at least two heating wire frames 2 are provided. The two heating wire frames 2 are arranged vertically and correspondingly set on the frame 1. Each heating wire frame 2 is provided with a heating wire 3. For this structural design, there are two methods to extend the service life of the heating wire 3: 1. By keeping the length of the heating wire assembly, heating power, and heating wire diameter unchanged, the installation length of the heating wire 3 is increased by designing a double-layer heating wire structure, increasing the gap between the coils of the heating wire, increasing the heat dissipation area, thereby improving heat dissipation efficiency, reducing the temperature of the heating wire body, and extending the service life; 2. By keeping the length of the heating wire assembly and heating power unchanged, the installation length of the heating wire is increased by designing a double-layer heating wire structure, increasing the wire diameter of the heating wire 3, increasing the surface area of ​​the heating wire 3, and reducing the surface load (w / cm²), thereby extending the service life.

[0035] Furthermore, as the temperature of the heating wire body decreases, heat is diffused to the surface of the heating wire assembly through heat conduction, reducing wasted heat and thus lowering energy consumption. The extended lifespan of the heating wire effectively reduces the frequency of customer maintenance and replacement, lowering labor costs and the cost of spare parts inventory.

[0036] Based on the above embodiment, the frame 1 has an inverted shape, and the heating wire frame 2 includes two positioning rods. A connecting rod is provided between the two positioning rods to realize the parallel arrangement of the two positioning rods.

[0037] For details, please refer to the appendix. Figure 2 The frame 1 is an inverted U-shaped structure with the opening facing upwards. The heating wire frame 2 includes positioning rods and connecting rods. There are generally two positioning rods, and the two positioning rods are parallel to each other. A connecting rod is set between the two positioning rods and they are fixedly connected by the connecting rod. It should be noted that during installation, the two positioning rods should be in the same horizontal plane, and the two sets of positioning rods should be in different horizontal planes, that is, parallel vertically, so as to leave enough installation space for the heating wire 3.

[0038] Based on the above embodiments, the heating wire frame 2 is further provided with a positioning component, which includes positioning rings. Multiple positioning rings are evenly distributed on each positioning rod, and the positioning rings on two positioning rods are fixedly connected.

[0039] Specifically, the upper heating wire frame 2 has multiple positioning rings at its lower end and multiple positioning rings at its upper end. It should be noted that each positioning ring is evenly distributed along the positioning rod, and the positioning rings on each positioning rod are correspondingly set. It can be understood that for a certain positioning ring, there are three other positioning rings in a vertical plane perpendicular to the positioning rod, and the four positioning rings can form a rectangular structure.

[0040] Based on the above embodiment, the heating wire 3 has a spiral structure and is arranged to pass through the positioning ring.

[0041] Specifically, the heating wire 3 is preferably spiral in shape, which facilitates the passage of the heating wire through the positioning ring. The positioning ring can limit the circumferential position of the heating wire 3. Generally, the positioning ring is made of ceramic, which ensures structural stability and has insulating properties.

[0042] Based on the above embodiment, an insulating tube 4 is provided on the inner periphery of the heating wire 3.

[0043] Specifically, an insulating tube 4 is provided inside the heating wire 3, or it can be understood as the spiral heating wire 3 being sleeved on the outer circumference of the insulating tube 4. Generally, the insulating tube is a ceramic tube, which can provide support for the heating wire 3 from the inside. In addition, it should be noted that the diameter of the ceramic tube should be smaller than the inner circumference diameter of the positioning ring, and the sum of the diameter of the ceramic tube and the diameter of the heating wire should be smaller than the inner circumference diameter of the positioning ring, so as to ensure that the insulating tube 4 and the positioning ring can achieve circumferential positioning of the heating wire 3.

[0044] In some embodiments, the frame 1 is further provided with a limiting piece 5 for restricting the axial movement of the heating wire 3.

[0045] For details, please refer to the appendix. Figure 1 A limiting piece 5 is provided on the left side of the frame 1. The limiting piece 5 is generally fixed to the side wall of the frame 1 by means of threaded connection, so as to limit the axial movement of the heating wire 3 and the insulating tube 4.

[0046] In some embodiments, the side of the skeleton 1 is provided with a plurality of through holes.

[0047] Specifically, multiple through holes are provided on the left side wall of frame 1, as detailed in the attached document. Figure 2 It should be noted that the installation of elements such as heating wire 3 and insulating tube 4 is achieved through the through hole on the side. For the structure of this application, the specific installation sequence is as follows: first, pass a set of heating wires 3 through the positioning ring and install the heating wires 3 on the heating wire skeleton 2. Then, install another set of heating wires 3 and the heating wire skeleton 2 on the skeleton 1 at the same time. Insert the insulating tube 4 into the heating wire 3 through the through hole provided on the side of the skeleton 1 to provide support. Finally, install the limiting piece 5 on the side of the skeleton 1 to prevent the heating wires 3 and insulating tube 4 from moving axially.

[0048] In some embodiments, the heating wire frame 2 and the frame 1 are detachably connected.

[0049] For details, please refer to the appendix. Figure 2In addition to the installation steps described above, the heating wire frame 2 and the frame 1 are detachably connected so that the heating wire 3 can be disassembled, replaced or repaired when it is damaged or needs to be inspected.

[0050] Based on the above embodiment, two sets of heating wires 3 are connected in series, and electrodes are provided on both sets of heating wires 3.

[0051] Specifically, with attachment Figure 2 Taking the two sets of heating wires 3 as an example, the four heating wires 3 are numbered in a clockwise direction (starting from the lower left corner), namely heating wires 1, 2, 3, and 4. Heating wires 1 and 2 are connected at the end near the limiting plate 5, heating wires 2 and 3 are connected at the end away from the limiting plate 5, and heating wires 3 and 4 are connected at the end near the limiting plate 5. Electrodes are provided at the ends of heating wires 1 and 4 away from the limiting plate 5 for connection to the power supply. Generally, the two electrodes can be directly installed in the side wall on the right side of the frame 1. A power supply can be set in the side wall on the right side of the frame 1, and a switch can be set on its surface to control the heating.

[0052] In addition to the above-mentioned wave soldering double-layer heating wire structure, this utility model also provides a wave soldering device including the wave soldering double-layer heating wire structure disclosed in the above embodiments. For the structure of other parts of the wave soldering device, please refer to the prior art, which will not be repeated here.

[0053] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0054] The above provides a detailed description of the wave soldering double-layer heating wire structure and wave soldering equipment provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A wave soldering double-layer heating wire structure, characterized in that, include: Skeleton (1); Heating wire skeleton (2) is provided on the skeleton (1), and the heating wire skeleton (2) is provided with at least two; The heating wire (3) is provided in two sets, and the two sets of heating wire (3) are respectively arranged in the two sets of heating wire skeletons (2). The frame (1) is a C-shaped structure. The heating wire frame (2) includes two positioning rods and a connecting rod is provided between the two positioning rods. The connecting rod is used to realize the parallel arrangement of the two positioning rods.

2. The wave soldering double-layer heating wire structure according to claim 1, characterized in that, The heating wire skeleton (2) is also provided with a positioning component, which includes a positioning ring. Multiple positioning rings are evenly distributed on each positioning rod, and the positioning rings on two positioning rods are fixedly connected.

3. The wave soldering double-layer heating wire structure according to claim 2, characterized in that, The heating wire (3) has a spiral structure and passes through the positioning ring.

4. The wave soldering double-layer heating wire structure according to claim 3, characterized in that, An insulating tube (4) is provided on the inner circumference of the heating wire (3).

5. The wave soldering double-layer heating wire structure according to claim 1, characterized in that, The frame (1) is also provided with a limiting piece (5) for restricting the axial movement of the heating wire (3).

6. The wave soldering double-layer heating wire structure according to claim 1, characterized in that, The side of the skeleton (1) is provided with multiple through holes.

7. The wave soldering double-layer heating wire structure according to claim 1, characterized in that, The heating wire frame (2) is detachably connected to the frame (1).

8. The wave soldering double-layer heating wire structure according to any one of claims 1 to 7, characterized in that, The two sets of heating wires (3) are connected in series, and electrodes are provided on both sets of heating wires (3).

9. A wave soldering device, comprising a double-layer heating wire structure for wave soldering, characterized in that, The wave soldering double-layer heating wire structure is the wave soldering double-layer heating wire structure as described in any one of claims 1 to 8.

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