阅读说明：本技术 一种发热体绝缘陶瓷固定件及真空钎焊炉 (Heating element insulating ceramic mounting and vacuum brazing furnace ) 是由 李俊锴 王子祥 于 2020-05-22 设计创作，主要内容包括：本发明提供了一种发热体绝缘陶瓷固定件及真空钎焊炉,该发热体绝缘陶瓷固定件包含底座体,底座体为柱体结构,底座体通过金属拉杆与真空钎焊炉的金属隔热屏固定连接,底座体的上端用于固定真空钎焊炉的加热带,底座体的侧壁上开设有第一绝缘槽,第一绝缘槽为绕底座体的周向延伸的环形槽。第一绝缘槽能够阻止底座体表面被工件材料的附着物或钎焊污染而产生爬电现象,保证真空钎焊炉的正常高效运行,同时避免炉体带电,消除安全隐患。解决了现有技术中的真空钎焊炉的绝缘陶瓷固定件容易被工件材料的附着物或钎焊污染产生爬电现象的问题。(The invention provides a heating element insulating ceramic fixing piece and a vacuum brazing furnace, wherein the heating element insulating ceramic fixing piece comprises a base body, the base body is of a cylindrical structure, the base body is fixedly connected with a metal heat shield of the vacuum brazing furnace through a metal pull rod, the upper end of the base body is used for fixing a heating belt of the vacuum brazing furnace, a first insulating groove is formed in the side wall of the base body, and the first insulating groove is an annular groove extending around the circumferential direction of the base body. The first insulation groove can prevent the surface of the base body from being polluted by attachments or brazing of workpiece materials to generate a creepage phenomenon, the normal and efficient operation of the vacuum brazing furnace is ensured, meanwhile, the furnace body is prevented from being electrified, and potential safety hazards are eliminated. The problem of the insulating ceramic mounting of vacuum brazing furnace among the prior art is easily by the attachment of work piece material or the problem of the creepage phenomenon that produces of brazing pollution is solved.)

1. The utility model provides a heat-generating body insulating ceramic mounting, includes the base body (10), the base body (10) are the cylinder structure, the lower extreme of the base body (10) be used for with the metal heat shield (50) fixed connection of vacuum brazing stove, the upper end of the base body (10) is used for fixing the heating tape (60) of vacuum brazing stove, its characterized in that, first insulation groove (11) have been seted up on the lateral wall of the base body (10), first insulation groove (11) are for winding the ring channel of the circumference extension of the base body (10).

2. A heat-generating body insulating ceramic fixing member as described in claim 1, wherein said base body (10) is a cylindrical body, said first insulating groove (11) is a circular groove, and said first insulating groove (11) is located on a plane perpendicular to a center line of said base body (10).

3. A heat-generating body insulating ceramic fixing member as described in claim 2, wherein said first insulating groove (11) is plural, and said plural first insulating grooves (11) are provided at intervals from each other in a direction of a center line of said base body (10).

4. A heating unit insulating ceramic fixing member as defined in claim 1, wherein the lower end of said base body (10) is provided with a ring-shaped step structure along the circumferential direction of said base body (10);

wherein, the center of the annular step structure forms a cylindrical protruding part (12), and the circumferential direction of the annular step structure forms an annular step surface (13); the bottom surface of the cylindrical protrusion part (12) and the metal heat shield (50) are mutually abutted; and a second insulating groove (14) is formed in the annular step surface (13), and the second insulating groove (14) is an annular groove surrounding the cylindrical protruding part (12).

5. A heat-generating body insulating ceramic fixing member as described in claim 4, wherein a depth direction of said second insulating groove (14) is extended toward the inside of said base body (10) along a center line of said base body (10).

6. A heat-generating body insulating ceramic fixing member as described in claim 5, wherein an inner wall of said second insulating groove (14) is flush with a circumferential side wall of said columnar projection (12).

7. A heating element insulating ceramic fixing member as defined in claim 1, wherein said base body (10) is provided with an assembling hole (15) along the direction of the center line thereof, said heating element insulating ceramic fixing member further comprising:

a tie bolt (20), the tie bolt (20) passing through the assembly hole (15) to fixedly connect the base body (10) with the metal heat shield (50).

8. A heat-generating body insulating ceramic fixing member as described in claim 7, further comprising:

the fixing cap (30) is detachably arranged at the upper port of the assembling hole (15), and the fixing cap (30) penetrates through the heating belt (60) to clamp and fix the heating belt (60) between the base body (10) and the fixing cap (30).

9. A heat-generating body insulating ceramic fixing member as defined in claim 8, wherein said base body (10) is opened with a first positioning hole (16) along a radial direction thereof, said first positioning hole (16) penetrates said fitting hole (15), said fixing cap (30) is opened with a second positioning hole (31) along a radial direction thereof, at least a part of said fixing cap (30) is penetrated in said fitting hole (15) to align said first positioning hole (16) and said second positioning hole (31) with each other; the heating element insulating ceramic fixing member further includes:

a locking strip (40), wherein the locking strip (40) passes through the first positioning hole (16) and the second positioning hole (31) to connect and fix the fixing cap (30) and the base body (10) with each other.

10. A vacuum brazing furnace comprising a heating element insulating ceramic fixing member, characterized in that the heating element insulating ceramic fixing member is a heating element insulating ceramic fixing member according to any one of claims 1 to 9.

Technical Field

The invention relates to the field of insulating parts, is applied to a vacuum brazing furnace, and particularly relates to a heating element insulating ceramic fixing piece and a vacuum brazing furnace.

Background

The vacuum brazing furnace equipment is an industrial equipment widely applied at present, and in the long-term working process of the vacuum brazing furnace, because the surface of an insulating ceramic fixing piece for fixing a heating body is often polluted by attachments or brazing of workpiece materials, the surface of the insulating ceramic fixing piece is electrically polarized to generate a creepage phenomenon; the creepage phenomenon not only can cause the heating efficiency of the vacuum brazing furnace to be seriously reduced, but also can cause the heating temperature to hardly reach the preset temperature; meanwhile, the creepage phenomenon can also lead the furnace body of the vacuum brazing furnace to be electrified, thus causing the potential safety hazard of human body.

Disclosure of Invention

The invention mainly aims to provide a heating element insulating ceramic fixing piece and a vacuum brazing furnace, and at least solves the problem that the insulating ceramic fixing piece of the vacuum brazing furnace in the prior art is easily polluted by attachments or brazing of workpiece materials to generate a creepage phenomenon.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a heating element insulating ceramic fixing member, comprising a base body, wherein the base body is of a cylindrical structure, a lower end of the base body is used for being fixedly connected with a metal heat shield of a vacuum brazing furnace, an upper end of the base body is used for fixing a heating belt of the vacuum brazing furnace, a side wall of the base body is provided with a first insulating groove, and the first insulating groove is an annular groove extending around a circumferential direction of the base body.

Further, the base body is the cylinder, and first insulation groove is the annular groove, and the plane that first insulation groove was located is perpendicular with base body central line.

Further, first insulating groove is a plurality of, and a plurality of first insulating grooves set up along the central line direction of the base body each other at intervals.

Furthermore, the lower end of the base body is provided with an annular step structure along the circumferential direction of the base body; the center of the annular step structure forms a cylindrical protruding part, and an annular step surface is formed in the circumferential direction of the annular step structure; the bottom surface of the cylindrical protrusion is abutted against the metal heat shield; a second insulating groove is formed in the surface of the annular step and is an annular groove surrounding the cylindrical protruding portion.

Further, the depth direction of the second insulation groove extends toward the inside of the base body along the center line of the base body.

Further, the inner side groove wall of the second insulation groove is flush with the circumferential side wall of the cylindrical protrusion.

Further, the base body has seted up the pilot hole along its central line direction, and heat-generating body insulating ceramic mounting still includes: and the pull rod bolt penetrates through the assembling hole so as to fixedly connect the base body with the metal heat shield.

Further, the heating element insulating ceramic fixing member further includes: the fixing cap is detachably arranged at the upper port of the assembling hole and penetrates through the heating belt to clamp and fix the heating belt between the base body and the fixing cap.

Furthermore, the base body is provided with a first positioning hole along the radial direction, the first positioning hole penetrates through the assembly hole, the fixing cap is provided with a second positioning hole along the radial direction, and at least part of the fixing cap penetrates through the assembly hole so as to align the first positioning hole and the second positioning hole; the heating element insulating ceramic fixing member further includes: and the locking strip penetrates through the first positioning hole and the second positioning hole to connect and fix the fixing cap and the base body with each other.

According to a second aspect of the present invention, there is provided a vacuum brazing furnace comprising the heating element insulating ceramic fixing member of the above-described contents.

The heating body insulating ceramic fixing piece comprises a base body, wherein the base body is of a cylindrical structure, the lower end of the base body is fixedly connected with a metal heat shield of a vacuum brazing furnace, the upper end of the base body is used for fixing a heating belt of the vacuum brazing furnace, a first insulating groove is formed in the side wall of the base body, and the first insulating groove is an annular groove extending around the circumferential direction of the base body. The first insulation groove can prevent the surface of the base body from being polluted by attachments or brazing of workpiece materials to generate a creepage phenomenon, the normal and efficient operation of the vacuum brazing furnace is ensured, meanwhile, the furnace body is prevented from being electrified, and potential safety hazards are eliminated. The problem of the insulating ceramic mounting of vacuum brazing furnace among the prior art is easily by the attachment of work piece material or the problem of the creepage phenomenon that produces of brazing pollution is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view showing a structure of an installed state of an alternative heat-generating body insulating ceramic fixing member according to an embodiment of the present invention;

FIG. 2 is a schematic view showing a constitution of a base body of a heat-generating body insulating ceramic fixing member which is alternative according to the embodiment of the present invention; and

FIG. 3 is a schematic view showing a constitution of a fixing cap of a heat-generating body insulating ceramic fixing member which is optional according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a base body; 11. a first insulation groove; 12. a cylindrical projection; 13. an annular step surface; 14. a second insulating trench; 15. an assembly hole; 16. a first positioning hole; 20. a draw bar bolt; 30. a fixing cap; 31. a second positioning hole; 32. a cap body portion; 33. a lever portion; 40. a locking bar; 50. a metal heat shield; 60. and heating the belt.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The heating element insulating ceramic fixing member according to the embodiment of the present invention, as shown in fig. 1 and fig. 2, comprises a base body 10, wherein the base body 10 is a cylindrical structure, the lower end of the base body 10 is used for fixedly connecting with a metal heat shield 50 of a vacuum brazing furnace, the upper end of the base body 10 is used for fixing a heating belt 60 of the vacuum brazing furnace, a first insulating groove 11 is opened on the side wall of the base body 10, and the first insulating groove 11 is an annular groove extending around the circumference of the base body 10. The first insulation groove 11 can prevent the surface of the base body 10 from being polluted by attachments or brazing of workpiece materials to generate a creepage phenomenon, so that the normal and efficient operation of the vacuum brazing furnace is ensured, the furnace body is prevented from being electrified, and potential safety hazards are eliminated. The problem of the insulating ceramic mounting of vacuum brazing furnace among the prior art is easily by the attachment of work piece material or the problem of the creepage phenomenon that produces of brazing pollution is solved.

During the concrete implementation, the base body 10 is the cylinder, and first insulation groove 11 is the annular groove, and the plane that first insulation groove 11 is located is perpendicular with the base body 10 central line, and first insulation groove 11 is seted up along the circumferencial direction of base body 10. When oil stains or metal powder produced by a workpiece are attached to the side wall of the base body 10 in the working process of the vacuum brazing furnace, the upper section and the lower section of the surface of the side wall of the base body 10 are isolated through the first insulating groove 11, so that the surface of the base body 10 is effectively prevented from being conducted to generate a creepage phenomenon.

In order to reach the better anti-creep effect, further, first insulation groove 11 is a plurality of, and a plurality of first insulation grooves 11 set up along the mutual interval of the central line direction of the base body 10, thereby cut apart into the multistage through setting up a plurality of first insulation grooves 11 with the lateral wall surface of the base body 10, realize better discharge creep effect. Optionally, there are two first insulation grooves 11 in this embodiment.

Although the first insulation grooves 11 can have a good anti-creep effect, after the vacuum brazing furnace is used for a long time, oil stains or metal powder produced by workpieces can gradually fill the first insulation grooves 11, so that the surface of the base body 10 has a creep phenomenon again. In order to solve the problem, further, the lower end of the base body 10 is provided with an annular step structure along the circumferential direction of the base body 10; a cylindrical protruding part 12 is formed at the center of the annular step structure, and an annular step surface 13 is formed in the circumferential direction of the annular step structure; when the base body 10 is mounted on the metal heat shield 50, the bottom surface of the cylindrical protrusion 12 and the metal heat shield 50 are abutted against each other, and the annular step surface 13 and the metal heat shield 50 are spaced by a certain distance; the second insulating groove 14 is formed in the annular step surface 13, the second insulating groove 14 is an annular groove surrounding the cylindrical protruding portion 12, the depth direction of the second insulating groove 14 extends towards the inside of the base body 10 along the central line of the base body 10, the second insulating groove 14 not only separates the surface of the base body 10 into two parts, but also enables the notch of the second insulating groove 14 to be downward, and oil stains or metal powder produced by a workpiece cannot enter the second insulating groove 14. So that the base body 10 can meet the requirement of long-term creepage prevention.

To facilitate machining of the second insulation groove 14, further, an inner groove wall of the second insulation groove 14 is flush with a circumferential side wall of the cylindrical protrusion 12.

In order to effectively and fixedly connect the base body 10 and the metal heat shield 50, further, as shown in fig. 2, the base body 10 is provided with an assembly hole 15 along the direction of the central line thereof, the diameter of the portion of the hole section of the assembly hole 15 near the upper end is larger than the diameter of the portion of the hole section of the assembly hole 15 near the lower end, thereby forming an annular clamping structure, the heating element insulating ceramic fixing member further comprises a pull rod bolt 20, the pull rod bolt 20 passes through the assembly hole 15 and the metal heat shield 50, the rear end nut of the pull rod bolt 20 is clamped on the annular clamping structure in the assembly hole 15, and the thread section of the front end of the pull rod bolt 20 extends out of the metal heat shield 50, thereby tightening the base body 10 through nut locking.

Further, the heating body insulating ceramic fixing member further includes a fixing cap 30, the fixing cap 30 is detachably provided at the upper port of the fitting hole 15, and the fixing cap 30 passes through the heating tape 60 to clamp and fix the heating tape 60 between the base body 10 and the fixing cap 30.

Specifically, as shown in fig. 2 and 3, the base body 10 is provided with a first positioning hole 16 along the radial direction thereof, the first positioning hole 16 penetrates through the assembly hole 15, the fixing cap 30 comprises a cap body portion 32 and a rod body portion 33, the rod body portion 33 is provided with a second positioning hole 31 along the radial direction thereof, when the heating belt 60 is installed, the heating belt 60 is flatly placed at the upper end of the base body 10, and the first positioning hole 16 and the second positioning hole 31 are aligned with each other by passing the rod body portion 33 of the fixing cap 30 through the installation hole on the heating belt 60 and extending into the assembly hole 15; the heating body insulating ceramic fixing member further comprises a locking strip 40, the locking strip 40 is passed through the first positioning hole 16 and the second positioning hole 31, and then both ends of the locking strip 40 are bent at a certain angle, thereby connecting and fixing the fixing cap 30 and the base body 10 to each other, and further fixing the heating band 60.

According to a second aspect of the present invention, there is provided a vacuum brazing furnace comprising a heating element insulating ceramic fixing member, a metal heat shield 50 and a heating belt 60, wherein the heating element insulating ceramic fixing member is the heating element insulating ceramic fixing member of the above embodiment, the heating belt 60 is fixedly mounted on the metal heat shield 50 through the heating element insulating ceramic fixing member, and the first insulating groove 11 and the second insulating groove 14 on the heating element insulating ceramic fixing member can effectively prevent the surface of the heating element insulating ceramic fixing member from generating a creepage phenomenon during the operation of the heating belt 60. The problem of the insulating ceramic mounting of vacuum brazing furnace among the prior art is easily by the attachment of work piece material or the problem of the creepage phenomenon that produces of brazing pollution is solved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.