CN217193150U

CN217193150U - Heating wire structure

Info

Publication number: CN217193150U
Application number: CN202220417967.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Guangzhou Jinzhiwei Electric Co ltd
Current assignee: Guangzhou Jinzhiwei Electric Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-08-16
Anticipated expiration: 2032-02-28

Abstract

The utility model relates to a heater strip structure, include: the device comprises a mounting box, a fixing support, a first heating assembly, a second heating assembly, a first wiring terminal, a second wiring terminal and a metal switching sheet; one end of the fixed bracket is connected with one side of the mounting box; the first heating assembly and the second heating assembly are both arranged on the fixed support and are insulated from the fixed support; the second heating assembly is positioned below the first heating assembly; the first heating assembly and the second heating assembly respectively comprise at least two insulating tubes, and each insulating tube is wound with a heating wire; the first wiring terminal penetrates through the mounting box, is arranged on the mounting box and is connected with the heating wire; the second binding post is arranged on the mounting box and is used for being connected with an external lead, and the second binding post is connected with the first binding post through a metal switching sheet; the first binding post and the second binding post are insulated from the mounting box. By adopting the design of a double-layer winding structure, the length of the bracket can be reduced, the heating space is reduced, the heated area of air is increased, and the heat loss is reduced.

Description

Heating wire structure

Technical Field

The utility model relates to a reflow soldering technique, more specifically relates to a heater strip structure.

Background

In the prior art, most of heating wire structures used in reflow soldering are single-layer winding structures, and the heating wire supports are long to reach the same heating temperature under the same power condition, so that the heating wire supports occupy the space of the inner cavity of the equipment greatly, the heating space is large, the heat loss is large, the heating speed is low, and the temperature is uneven.

In the heating wire structure adopted by the existing reflow soldering, the heating wire is directly connected with the root of the binding post, and the external lead is connected with the binding post. When installing outside wire, need be used for fixed wire to nut locking on the terminal, at the lock nut in-process this moment, can lead to the terminal to twist reverse to lead to twisting the heater that links to each other with the terminal root and knot or even break, very big life who shortens the heater strip still need tear down the whole heater strip structure that has fixed well and just can investigate the reason, has caused very big inconvenience for maintenance work.

In addition, because the terminal is metal material and root connection heater both ends, receives the influence of heater heat, can gather high temperature on the terminal, forms local high temperature promptly, at the in-process that uses this heater strip, can lead to the wire of terminal department to be in under the high temperature for a long time, and extremely easy the burnout seriously influences the plant use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming above-mentioned prior art and organize at least one kind defect, provide a heater strip structure, this structure adopts double-deck design, can reduce the length of support, reduces heating space, and increase air heating area reduces heat loss, improves the programming rate and makes the intensification more even stable, and the outside wire passes through the indirect heater that connects of metal switching piece, and the heater that arouses when having solved the wire and connecting twists reverse the rupture problem.

In order to achieve the above object, the utility model adopts the following technical scheme:

provided is a heating wire structure comprising: the device comprises a mounting box, a fixing support, a first heating assembly, a second heating assembly, a first wiring terminal, a second wiring terminal and a metal switching sheet; one end of the fixed support is connected with one side of the mounting box; the first heating assembly and the second heating assembly are both arranged on the fixed support and are insulated from the fixed support; the second heating assembly is positioned below the first heating assembly; the first heating assembly and the second heating assembly respectively comprise at least two insulating tubes, and each insulating tube is wound with a heating wire; the first wiring terminal penetrates through the mounting box, is arranged on the mounting box and is connected with the heating wire; the second binding post is arranged on the mounting box and is used for being connected with an external lead, and the second binding post is connected with the first binding post through the metal switching sheet; the first binding post and the second binding post are insulated from the mounting box.

Preferably, the insulating tube is further sleeved with a first insulating ring so as to insulate the heating wire from the fixing bracket.

Preferably, the first binding post and the second binding post are sleeved with a second insulating ring, and the first binding post and the second binding post are insulated from the mounting box through the second insulating ring.

Preferably, the heating wire of the second heating assembly is connected with the heating wire of the first heating assembly.

Preferably, the heating wire of the second heating assembly is connected with the first binding post through the heating wire of the first heating assembly.

Preferably, the heating wires of the second heating assembly are connected to each other and/or the heating wires of the first heating assembly are connected to each other.

Preferably, the mounting box is internally provided with a heat insulation layer.

Preferably, the number of the first insulating rings sleeved on each insulating pipe is multiple, and the first insulating rings are sleeved on the insulating pipe at equal intervals.

Preferably, the number of the fixed supports is multiple, and at least one insulating tube of the first heating assembly and at least one insulating tube of the second heating assembly are mounted on one fixed support.

Preferably, the two fixing brackets are arranged on one side of the mounting box in parallel.

Preferably, the fixing bracket is welded to one side of the mounting box.

Preferably, a plurality of the fixing brackets are mounted in parallel at equal intervals on one side of the mounting box.

Compared with the prior art, the utility model profitable effect does: the utility model discloses a reflow soldering heater strip structure has adopted a double-deck heater structural design, and compact structure, under the same power and reach the same condition of the temperature that generates heat, this kind of heater strip structural length shortens, the effectual space that saves, the area of contact of increase heater and air has improved the programming rate, lets the intensification more even. The heat insulation material is filled in the mounting box, the local high temperature generated by the wiring end can be effectively reduced, the external wire is prevented from being burnt out after long-time use, meanwhile, the external wire and the heating wire are in transition and indirectly connected, the problem that the heating wire is knotted and twisted and broken when mounted is solved, maintenance and repair are more convenient, and the service life of the heating wire structure is greatly prolonged.

Drawings

Fig. 1 is a structural diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a partial view of the mounting box of the present invention.

The structure comprises 1-a first wiring terminal, 2-a second wiring terminal, 3-a locking nut, 4-a metal switching sheet, 5-a second insulating ring, 6-a fixing through hole in a mounting box, 7-the mounting box, 8-a heating wire, 9-a first insulating ring, 10-a fixing support and 11-an insulating tube.

Detailed Description

In order to make the objects and technical solutions of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 2, in the present embodiment, a heating wire structure is provided, which is applied to reflow soldering, and includes: the device comprises a mounting box 7, a fixing support 10, a first heating assembly, a second heating assembly, a first binding post 1, a second binding post 2 and a metal adapter plate 4; one end of the fixed bracket 10 is connected with one side of the mounting box 7; the first heating assembly and the second heating assembly are both arranged on the fixed support 10 and are insulated from the fixed support 10; the second heating assembly is positioned below the first heating assembly; the first heating assembly and the second heating assembly respectively comprise at least two insulating tubes 11, and each insulating tube 11 is wound with a heating wire 8; the first wiring terminal 1 penetrates through the mounting box 7, is arranged on the mounting box 7 and is connected with the heating wire 8; the second binding post 2 is arranged on the mounting box 7 and is used for being connected with an external lead, and the second binding post 2 is connected with the first binding post 1 through a metal switching sheet 4; the first terminal 1 and the second terminal 2 are insulated from the mounting box 7.

Specifically, the fixing bracket 10 may be mounted on the mounting box 7 by a nut, or may be directly welded on the mounting box 7, and preferably, one end of the fixing bracket 10 is directly welded on the mounting box 7; the insulating tube 11 may be, but is not limited to, made of high temperature resistant insulating materials such as plastics, ceramics, etc., preferably, the insulating tube 11 is a ceramic tube; the number of the fixed support 10 may be one, or may be multiple, the first heating assembly is mounted at the upper end of the fixed support 10, the second heating assembly is mounted at the lower end of the fixed support 10, and a certain distance is provided between each insulating tube 11, the number of the insulating tubes 11 mounted on each fixed support 10 may be set according to requirements, for example, when the number of the fixed support 10 is one, and the number of the insulating tubes 11 of the first heating assembly and the number of the insulating tubes 11 of the second heating assembly are both two, the two insulating tubes 11 of the first heating assembly are mounted at the upper end of the fixed support 10 in parallel, and the two insulating tubes 11 of the second heating assembly are mounted at the lower end of the fixed support 10 in parallel; when the number of the fixed supports 10 is two, and the number of the insulating tubes 11 of the first heating assembly and the second heating assembly is two, the upper end of each fixed support 10 is provided with one insulating tube 11 of the first heating assembly, and the lower end of each fixed support 10 is provided with one insulating tube 11 of the second heating assembly; this embodiment heater strip structure is through adopting double-deck design, and the top of locating second heating element with first heating element forms double-deck heating structure, and compact structure, under the same power and reach the condition of the same temperature that generates heat, this kind of heater strip structural length shortens, and the effectual space that saves increases the area of contact of heater 8 and air has improved the programming rate, lets the intensification more even.

In this embodiment, the heating wire 8 of the second heating assembly is connected and conducted with the heating wire 8 of the first heating assembly into a whole.

In this embodiment, the heating wire 8 of the second heating assembly is connected to the heating wire 8 of the first heating assembly and the first terminal 1.

In this embodiment, the heating wires 8 of the second heating assembly are interconnected and/or the heating wires 8 of the first heating assembly are interconnected.

Specifically, the heating wire 8 is spirally wound on the insulating tube 11, and one heating wire 8 can be spirally wound from the first insulating tube 11 of the first heating assembly to the second insulating tube 11 and then to the two insulating tubes 11 of the second heating assembly, that is, in the heating wire structure of the embodiment, one heating wire 8 is wound on all the insulating tubes 11 in a certain sequence, so that the heating wire 8 on each insulating tube is connected and conducted, and two ends of the heating wire 8 are connected to the first terminal 1; the heating wire 8 can be spirally wound from an insulating tube 11 of a first heating assembly to an insulating tube 11 of a second heating assembly, or each heating wire 8 can be spirally wound on an insulating tube 11, and one end of each heating wire 8 is connected with the first wiring terminal 1; preferably, in order to further increase the contact area of the heating wire 8 with air, the heating wire 8 is wound on the insulating tube 11 at a certain spiral pitch; the heating wire 8 on each insulating tube 11 can be connected to the same first wiring terminal 1, and the heating wire 8 on one insulating tube 11 can also be connected to one first wiring terminal 1; first terminal 1 is connected with second terminal 2 through metal switching piece 4, external conductor is connected to on the second terminal 2 to through first terminal 1, second terminal 2 and metal switching piece 4 indirect connection between external conductor and the heater 8, solved because of heater 8 and external conductor lug connection, thereby the in-process of installation external conductor lock nut 3 leads to the terminal to twist reverse and lead to twisting the problem of knotting or even rupture with terminal connection's heater 8.

Because the fixing support 10 is made of metal material, in order to further ensure that the heating wire 8 on the insulating tube 11 is insulated from the fixing support 10 and avoid the problem of electric leakage caused by the contact between the heating wire 8 and the fixing support 10, the insulating tube 11 is further sleeved with a first insulating ring 9 so as to insulate the heating wire 8 from the fixing support 10.

Specifically, the first insulating ring 9 may be made of, but not limited to, a high temperature resistant insulating material such as plastic, ceramic, etc., and preferably, the first insulating ring 9 is a ceramic ring; in the installation process, the first insulating rings 9 are fixedly installed at the upper end and the lower end of the fixed support 10, the insulating tube 11 of the first heating assembly penetrates through the first insulating ring 9 at the upper end of the fixed support 10, and the insulating tube 11 of the second heating assembly penetrates through the first insulating ring 9 at the lower end of the fixed support 10.

In order to enhance the stability of the insulating pipes 11, the number of the first insulating rings 9 sleeved on each insulating pipe 11 is multiple, and the plurality of first insulating rings 9 are sleeved on the insulating pipes 11 at equal intervals.

As shown in fig. 3, in order to further ensure that the first terminal 1 and the second terminal 2 are both insulated from the mounting box 7, the problem of electric leakage caused by the contact between the first terminal 1 or the second terminal 2 and the mounting box 7 is avoided, the first terminal 1 and the second terminal 2 are both sleeved with the second insulating ring 5, and the first terminal 1 and the second terminal 2 are both insulated from the mounting box 7 through the second insulating ring 5.

Specifically, the second insulating ring 5 may be made of, but not limited to, a high temperature resistant insulating material such as plastic, ceramic, etc., and preferably, the second insulating ring 5 is a ceramic ring; the first binding post 1 and the second binding post 2 both comprise a stud and a plurality of locking nuts 3 matched with the stud, and the second insulating ring 5 is sleeved on the stud and locked between the mounting box 7 and the locking nuts 3 through the locking nuts 3, so that the purpose of insulating the locking nuts 3 from the mounting box 7 is achieved; the mounting box 7 is provided with a first through hole and a second through hole, the stud of the first binding post 1 penetrates through the first through hole to be connected with the heating wire 8, the stud of the second binding post 2 penetrates through the second through hole, and the studs are not in contact with the inner walls of the first through hole and the second through hole.

Specifically, one end of the heating wire 8 is connected with the root of the stud of the first binding post 1.

As a preferable embodiment of the mounting case 7, a heat insulating layer is provided inside the mounting case 7. Specifically, at implementation, the insulating layer forms through the mode at the inside thermal insulation material that fills of mounting box 7, fills thermal insulation material and can effectively reduce the terminal and produce local high temperature in mounting box 7, avoids long-time the use down outside wire to be blown, the influence of the local high temperature of effectual reduction terminal.

As a specific embodiment of the fixing support 10, the number of the fixing supports 10 is plural, and at least one insulation tube 11 of the first heating assembly and at least one insulation tube 11 of the second heating assembly are mounted on one fixing support 10.

Specifically, the plurality of fixing brackets 10 are installed in parallel at equal intervals on one side of the mounting box 7.

In the specific implementation process of this embodiment, the number of the fixing bracket 100, the first terminal 1, the second terminal 2 and the metal adaptor pieces 4 is two; the number of the insulating tubes 11 of the first heating assembly and the number of the insulating tubes 11 of the second heating assembly are two, the insulating tube 11 of the first heating assembly is installed at the upper end of each fixing support 10, the insulating tube 11 of the second heating assembly is installed at the lower end of each fixing support, and the heating wire 8 is spirally wound onto the second insulating tube 11 from the first insulating tube 11 of the first heating assembly and is further wound onto the two insulating tubes 11 of the second heating assembly. Preferably, in order to further increase the contact area of the heating wire 8 with air, the heating wire 8 is wound on the insulating tube 11 at a certain spiral pitch; two ends of the heating wire 8 are respectively connected to the two first binding posts 1; a first terminal 1 is connected to a second terminal 2 via a metal contact strip 4. And the mounting fixing through holes 6 are formed in the external mounting panel of the mounting box 7, so that the mounting is convenient and the mounting is fixed to reflow soldering.

In the specific implementation process, the heating wire structure is of an integral structure, and all parts cannot be detached randomly, so that the heating wire is prevented from being damaged. In the installation state, the heating wire structure is placed in the heating space inside the reflow soldering machine, and the installation fixing through holes 6 outside the installation box 7 correspond to the hole positions outside the heating space and need to be locked and fixed. And connecting an external lead to the second binding post 2, and locking the external lead by using a matched second nut on the second binding post.

To sum up, the utility model discloses the heater strip structure belongs to neotype reflow soldering heater strip structure, is a double-deck heating structure, and compact structure under the same power and reach the same condition of the temperature that generates heat, this kind of heater strip structural length shortens, and effectual space-saving increases the area of contact of heater 8 with the air, has improved the programming rate, lets the intensification more even. Meanwhile, the installation box 7 is filled with heat insulation materials, the generation of local high temperature of the wiring end can be effectively reduced, the external lead is prevented from being burnt off under the condition of long-time use, in addition, the external lead and the heating wire 8 are in transition and indirect connection, the problem that the heating wire 8 is knotted, twisted and broken when in installation is solved, the maintenance and the repair are convenient, and the service life of the heating wire is greatly prolonged. The heating structure is not only suitable for the heating structure of reflow soldering equipment, but also suitable for other occasions needing heating.

The technical contents of the present invention are further described above only by way of examples, and those skilled in the art to which the present invention pertains can also make changes and modifications to the above-described embodiments. Therefore, the present invention is not limited to the above embodiments, and any obvious modifications, replacements or re-creation based on the present invention are within the protection scope of the present invention. Protected by the utility model. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A heating wire structure, comprising: the device comprises a mounting box, a fixing support, a first heating assembly, a second heating assembly, a first wiring terminal, a second wiring terminal and a metal switching sheet; one end of the fixed support is connected with one side of the mounting box; the first heating assembly and the second heating assembly are both arranged on the fixed support and are insulated from the fixed support; the second heating assembly is positioned below the first heating assembly; the first heating assembly and the second heating assembly respectively comprise at least two insulating tubes, and each insulating tube is wound with a heating wire; the first wiring terminal penetrates through the mounting box, is arranged on the mounting box and is connected with the heating wire; the second binding post is arranged on the mounting box and is used for being connected with an external lead, and the second binding post is connected with the first binding post through the metal switching sheet; the first binding post and the second binding post are insulated from the mounting box.

2. The heater wire structure according to claim 1, wherein the insulating tube is further sheathed with a first insulating ring to insulate the heater wire from the fixing bracket.

3. The heating wire structure according to claim 1, wherein the first terminal and the second terminal are each sheathed with a second insulating ring, and the first terminal and the second terminal are each insulated from the mounting box by the second insulating ring.

4. The heating wire structure according to claim 1, wherein the heating wire of the second heating assembly is connected to the heating wire of the first heating assembly.

5. The heating wire structure according to claim 4, wherein the heating wire of the second heating assembly is connected to the first terminal through the heating wire of the first heating assembly.

6. Heating wire structure according to claim 5, wherein the heating wires of the second heating assembly are interconnected and/or the heating wires of the first heating assembly are interconnected.

7. Heating wire arrangement according to any of claims 1-6, wherein the mounting box is provided with insulation inside.

8. The heating wire structure according to claim 2, wherein the number of the first insulating rings sleeved on each insulating tube is multiple, and the multiple first insulating rings are sleeved on the insulating tube at equal intervals.

9. The heating wire structure according to claim 1, wherein the number of the fixing brackets is plural, and at least one insulating tube of the first heating assembly and at least one insulating tube of the second heating assembly are mounted on one of the fixing brackets.

10. The heating wire structure according to claim 9, wherein a plurality of the fixing brackets are installed in parallel at equal intervals at one side of the mounting box.