CN215846186U

CN215846186U - Heating device of reflow oven

Info

Publication number: CN215846186U
Application number: CN202122242826.7U
Authority: CN
Inventors: 石军
Original assignee: Suzhou Lyade Intelligent Equipment Co ltd
Current assignee: Suzhou Lyade Intelligent Equipment Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-02-18
Anticipated expiration: 2031-09-16

Abstract

The utility model relates to a heating device of a reflow oven, which comprises heating wires, wherein the heating wires are arranged in an annular structure, at least two heating wires are arranged, and the heating wires are arranged in a duplex structure with an upper layer and a lower layer superposed; ceramic rings are sleeved on the outer sides of the two heating wires, the ceramic rings positioned above and below are connected and fixed through fixing rings, and then the fixing rings are connected to the inner sides of the heating wire brackets; the heating wire support is also of an annular structure, and an opening is reserved on one side of the heating wire support and is respectively connected with two ends of the support mounting plate. The two high-power heating wires with the annular structures effectively solve the problem of uneven heating force in the heating furnace and greatly improve the heating efficiency. The ceramic rings on the outer side of the heating wire are used as fixed fulcrums, and the number of the ceramic rings is increased in a multi-point dense layering mode, so that the deformation probability of the heating wire is reduced, and the safety in use is improved. In addition, the supporting vertical frame can further reinforce the support of the heating wires, so that the safety and the stability in use are further improved.

Description

Heating device of reflow oven

Technical Field

The utility model relates to a heating device of a reflow oven, belonging to the technical field of reflow oven auxiliary equipment.

Background

The reflow oven is an apparatus which can make the solder paste heated and melted by providing a heating environment, and make the surface mounted components and PCB pads reliably combined together through the solder paste. The welding in the reflow soldering furnace is divided into four action processes, namely, the circuit board with the mounted components is transported by the guide rail of the reflow soldering furnace to pass through the preheating zone, the heat preservation zone, the welding zone and the cooling zone respectively, and complete welding points are formed under the action of the four temperature zones. As the highest temperature of the reflow oven during working is about 230-250 ℃, and the reflow oven is rapidly cooled after the peak temperature is passed, nitrogen is added into the reflow oven for combined use, the nitrogen belongs to one of inert gases and is not easy to generate compounds with metal, so that the oxidation reaction generated by the contact of oxygen in the air and the metal can be avoided, the welding capacity is improved, the soldering tin performance is enhanced, and the hole rate is reduced.

The temperature is rapidly raised by a heating device in the soldering area of the reflow oven, so that the solder paste on each component is in a molten state. However, the existing heating device often has the problem of uneven heating position, so that the solder paste on partial components on the PCB can not be completely melted, the phenomenon of poor welding is caused, and the reject ratio of finished products is increased.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a heating device of a reflow oven to solve the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme: the heating wire support is of an annular structure, openings are reserved in one side of the heating wire support and are respectively connected to two ends of a support mounting plate.

The heating wire is connected to the inner side of the heating wire bracket by taking the ceramic ring sleeved on the outer side as a fulcrum and taking the fixing ring as an intermediate piece, so that the fixing between the heating wire and the heating wire bracket is completed. An opening is reserved on one side of the heating wire support, the two ends of the opening are connected with the two ends of the mounting connecting plate through the adapter pieces respectively, and the mounting connecting plate is arranged on the side of the heating furnace, so that the mounting and fixing of the heating wire in the heating furnace are completed. In addition, the two ends of the heating wire are connected with power supply equipment by penetrating through the opening on the mounting connecting plate, so that the heating wire is connected with a power supply to normally heat.

The heating wire preferably adopts a high-power heating wire, the heating wire is bent into a ring structure, and two heating wires are superposed up and down to form a double-layer compound structure. The heating wire with the annular structure can effectively solve the problem of uneven heating power in the heating furnace, and especially can greatly improve the heating efficiency, so that the heating time in the heating furnace is shortened, and the efficiency in work is improved. In addition, the heating wires are fixedly connected by a method of connecting the outer sleeve ceramic rings with the fixing rings, so that on one hand, the exposed area of the heating wires is increased, and the heat dissipation efficiency is effectively increased; on the other hand, the contact probability among the heating wires can be reduced, and the safety in use is improved.

Furthermore, a plurality of ceramic rings are arranged along the outer sides of the upper heating wire and the lower heating wire; the ceramic rings are arranged along the outer sides of the two heating wires in a multi-point intensive mode, and the probability of deformation and damage of the heating wires can be greatly reduced by increasing the number of the ceramic rings, and the two heating wires can be more firmly fixed on the heating wire support.

Furthermore, a supporting vertical frame is connected and arranged on the outer side of the heating wire bracket; the heating wire is fixed on the heating wire bracket through the fixing ring and then connected to the side in the heating furnace through the mounting connecting plate. Simultaneously, still set up the support grudging post in heater strip support's outside symmetry to the upper end that will support the grudging post is connected in heater strip support's the outside, and its lower extreme is connected in the bottom in the heating furnace, helps playing further reinforcing effect to the support of heater strip, and security and stability when also making the use obtain further promotion.

Compared with the prior art, the utility model has the beneficial effects that: the utility model has the characteristics of simple and compact structure, quick assembly and disassembly, convenient use and high working efficiency. Two high-power heating wires are bent into a ring structure, and are stacked up and down to form a double-layer compound structure, so that the problem of uneven heating force in the heating furnace is effectively solved, the heating efficiency is greatly improved, and the heating time in the furnace cavity of the heating furnace is shortened by nearly half. Utilize the ceramic ring of heater strip outside cover establishing as fixed fulcrum, the retainer plate is connected in the inboard of heater strip support as the middleware to adopt the intensive layering of multiple spot to install the mode to increase the quantity of ceramic ring simultaneously, not only greatly reduced the heater strip and deformed the probability of damaging, the insulating nature of ceramic ring has also greatly increased the security when using simultaneously. In addition, the supporting vertical frame is favorable for further reinforcing the support of the heating wires, and the safety and the stability in use are further improved.

Drawings

FIG. 1: is a schematic three-dimensional structure of the utility model;

FIG. 2: is a schematic view of the top view structure of the utility model;

FIG. 3: is a schematic front view structure diagram of the utility model;

FIG. 4: is a schematic side view structure of the present invention.

Labeled as: 1. heating wires; 2. a support stand; 3. a bracket mounting plate; 4. a heating wire bracket; 5. a ceramic ring; 6. and a fixing ring.

Detailed Description

The utility model will be described in further detail below with reference to the figures and specific embodiments.

Example 1

The heating device of the reflow oven provided by the embodiment is as shown in fig. 1 to 4: including heater strip 1, heater strip 1 sets up and is two at least for loop configuration, is arranged to two-layer superimposed duplex structure from top to bottom, all cup joints ceramic ring 5 along the outside of two heater strips 1 to connect fixedly ceramic ring 5 that is located top and below through retainer plate 6, connect retainer plate 6 in heater strip support 4's inboard again, heater strip support 4 also is loop configuration and leaves the opening in one side and connect respectively in the both ends of mounting panel 3.

The embodiment also comprises that a plurality of ceramic rings 5 are arranged along the outer sides of the upper heating wire 1 and the lower heating wire 1, and the outer sides of the heating wire brackets 4 are connected with the supporting vertical frames 2; the ceramic rings 5 are arranged along the outer sides of the two heating wires 1 in a multi-point intensive mode, so that the number of the ceramic rings 5 is increased, the probability of deformation and damage of the heating wires 1 can be greatly reduced, and the two heating wires 1 can be more firmly fixed on the heating wire support 4. The upper end of the supporting vertical frame 2 is connected to the outer side of the heating wire bracket 4, and the lower end of the supporting vertical frame is connected to the bottom in the heating furnace, so that the supporting of the heating wire 1 is further reinforced, and the safety and the stability in use are further improved.

The use method of the utility model comprises the following steps:

firstly, at least two heating wires 1 are arranged, the two heating wires 1 are bent into a ring structure, and then the upper layer and the lower layer are arranged into a compound structure which is mutually superposed.

Then, a plurality of ceramic rings 5 are sleeved on the outer sides of the upper heating wire 1 and the lower heating wire 1, the ceramic rings 5 above and below are fixed in pairs through the fixing rings 6, and the fixing rings 6 are connected to the inner sides of the heating wire supports 4. The heater wire support 4 is also configured as a ring structure and is fixed at both ends connected to the support mounting plate 3 with an opening at one side.

Finally, the mounting connecting plate 3 is connected to the inner side of the heating furnace, an opening is formed in the upper portion of the mounting connecting plate, and the heating wire 1 penetrates through the opening formed in the mounting connecting plate 3 to be externally connected with power supply equipment. The outer sides of the heating wire brackets 4 are symmetrically connected with the upper end of the supporting vertical frame 2, and the lower end of the supporting vertical frame 2 is connected with the bottom in the heating furnace.

During the use, open external power equipment and make heater 1 generate heat and begin work, realize the even of reflow soldering stove in the heating furnace generate heat, effectively solve the inhomogeneous problem of heating power in the heating furnace, improve the efficiency of heating greatly, make the time of heating shorten in the heating furnace to promote the efficiency in the work.

In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

In addition to the above embodiments, the present invention may have other embodiments. It will be apparent to those skilled in the art that modifications and equivalents may be made in the above-described embodiments or portions thereof, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A heating device of a reflow oven, comprising a heating wire (1), characterized in that: the heating wire (1) is of an annular structure and is at least two, the heating wire is arranged into an upper layer and a lower layer of superposed compound structures, ceramic rings (5) are sleeved on the outer sides of the heating wire (1) along the two layers of superposed compound structures, the ceramic rings (5) above and below are fixedly connected through fixing rings (6), the fixing rings (6) are connected to the inner sides of the heating wire supports (4), the heating wire supports (4) are also of an annular structure, and openings are reserved on one sides of the heating wire supports and are respectively connected to the two ends of the support mounting plate (3).

2. The heating apparatus of a reflow oven according to claim 1, wherein: the ceramic rings (5) are arranged in a plurality along the outer sides of the upper heating wire and the lower heating wire (1).

3. The heating apparatus of a reflow oven according to claim 1, wherein: the outer side of the heating wire support (4) is connected with a supporting vertical frame (2).