Brazing plug and brazing filler metal integrated structure of metal vacuum insulated panel

Abstract

The utility model relates to the technical field of brazing, in particular to a brazing plug and brazing filler metal integrated structure of a metal vacuum insulated panel, which comprises a base, shells fixedly connected to the left side and the right side of the top of the base, limiting strips fixedly connected to the upper portions of the inner sides of the shells, brazing filler metal slidably connected to the outer sides of the upper portions of the limiting strips, and inserting grooves formed under the brazing filler metal. A welding strip is fixedly connected below the inner end face of the welding flux, and a plug body is fixedly connected to one end face, away from the welding flux, of the welding strip; through design cooperation, the device can preassemble welding flux and a plug body together when the plug body is produced, the plug body with the welding flux is placed into an exhaust hole at a time when the device works, a workpiece can be placed at a time, the structure of a discharging mechanical arm is simplified, the process of placing the workpiece at a time is reduced, the production efficiency is improved, meanwhile, the defective rate is reduced, and the production cost is reduced. And in cooperation with a limiting strip at the top of the shell and a slot below the welding flux, the accuracy of placing the plug body on the inner side of the shell can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brazing, in particular to an integrated structure of a brazing plug and a filler metal for a metal vacuum insulation panel. Background Technique

[0002] Brazing is a welding process mainly used to connect metal materials;

[0003] A metal or alloy with a melting point lower than that of the base material to be welded is used as the filler metal. By heating, the filler metal is melted, and by means of capillary action, the filler metal is filled into the workpiece gap, diffused and dissolved with the base material, and a firm welded joint is formed after condensation. When vacuum brazing the exhaust holes of a metal vacuum insulation panel, a plug and a filler metal need to be placed in the holes. By heating and melting the filler metal, the filler metal condenses and fixes the plug and the hole;

[0004] In the existing brazing technology, when in use, a plug is first placed in the exhaust hole, and then the filler metal is placed. However, the vacuum brazing of the exhaust holes of a metal vacuum insulation panel is completed in a vacuum environment, and manual intervention is impossible. Placing the plug and the filler metal both need to be completed by a robot or a manipulator. Two workpieces, the plug and the filler metal, need to be placed in sequence, which makes the design of the manipulator complex, occupies a large area, and has a high equipment cost. The two placements require accurate positions. Once placed incorrectly, defective products will be produced, resulting in a high defective rate.

[0005] To solve the above problems, an integrated structure of a brazing plug and a filler metal for a metal vacuum insulation panel is proposed in this application. Content of the Utility Model

[0006] To solve the problems raised in the above background technique. The utility model provides an integrated structure of a brazing plug and a filler metal for a metal vacuum insulation panel, which has the characteristic of reducing the process of placing workpieces once.

[0007] To achieve the above object, the utility model adopts the following technical scheme: An integrated structure of a brazing plug and a filler metal for a metal vacuum insulation panel, including a base, the left and right sides of the top of the base are fixedly connected with a shell, the upper inner side of the shell is fixedly connected with a limiting strip, a filler metal is slidably connected to the outer side above the limiting strip, a slot is opened directly below the filler metal, a welding strip is fixedly connected to the lower part of the inner end surface of the filler metal, and a plug body is fixedly connected to the end surface of the welding strip away from the filler metal.

[0008] Preferably, in the integrated structure of the brazing plug and filler metal of a metal vacuum insulation panel of the present utility model, the top of the middle of the base contacts the middle of the bottom of the plug body, the inner side of the shell contacts the outer side below the plug body, and the upper inner side of the shell contacts the outer side of the filler metal. When producing the plug body, the filler metal and the plug body can be pre-assembled together. During operation, the plug body with the filler metal can be placed into the exhaust hole at one time, so that the workpiece only needs to be placed once, simplifying the structure of the loading manipulator and the loading process at the same time.

[0009] Preferably, in the integrated structure of the brazing plug and filler metal of a metal vacuum insulation panel of the present utility model, the number of the shells is two, and the shells are distributed on the left and right sides of the top of the shell. A reserved groove is opened at the top end of the inner side of the shell, and the longitudinal section shape of the reserved groove at the top end of the inner side of the shell is a quarter circle. After the filler metal melts in the reserved groove at the top end of the inner side of the shell, it can flow evenly on the inner side of the shell through the reserved groove.

[0010] Preferably, in the integrated structure of the brazing plug and filler metal of a metal vacuum insulation panel of the present utility model, the number of the limiting strips is the same as that of the shells, which is two, and the length of the limiting strip matches the front and back length of the shell. The longitudinal section shape of the limiting strip is a rectangle, which can improve the accuracy of placing the plug body on the inner side of the shell and avoid the situation that the filler metal breaks away from the plug body before melting.

[0011] Preferably, in the integrated structure of the brazing plug and filler metal of a metal vacuum insulation panel of the present utility model, arc-shaped grooves are opened on the left and right sides of the top of the plug body, and the grooves on the left and right sides of the fixed plate of the plug body communicate with the reserved grooves opened at the top end of the inner side of the shell, so that after the filler metal melts, it can flow along the combination of the groove and the reserved groove.

[0012] Preferably, in the integrated structure of the brazing plug and filler metal of a metal vacuum insulation panel of the present utility model, the length of the welding strip matches the length of the filler metal, and the melting point of the welding strip is lower than that of the filler metal. Both the inner and outer end faces of the welding strip are provided with sticking grooves. The arc of the sticking groove on the outer end face of the welding strip matches the arc of the lower inner side of the filler metal, and the arc of the sticking groove on the inner end face of the welding strip matches the arc of the grooves on the left and right sides of the top of the plug body. Since the melting point of the welding strip is lower than that of the filler metal, the welding strip will melt earlier than the filler metal before melting the filler metal, which is convenient for splicing and fixing the plug body and the filler metal during pre-assembly.

[0013] Preferably, in the integrated structure of the brazing plug and filler metal of a metal vacuum insulation panel of the present utility model, the length of the slot at the bottom of the filler metal matches the length of the limiting strip above the inner side of the shell, and the longitudinal section shape of the slot matches the longitudinal section shape of the limiting strip. The limiting strip is inserted into the slot at the bottom of the filler metal, avoiding the filler metal from separating from both sides of the plug body due to unstable pre-installation between the filler metal and the plug body during the melting of the filler metal during brazing, and improving the stability of the filler metal between the plug body and the shell to a certain extent.

[0014] The present utility model has the following beneficial effects:

[0015] In the integrated structure of the brazing plug and filler metal of the metal vacuum insulation panel designed by the present utility model, through the designed cooperation, the device can pre-install the filler metal and the plug body together when producing the plug body. During operation, the plug body with the filler metal is placed into the exhaust hole at one time, so that the workpiece only needs to be placed once, simplifying the structure of the feeding manipulator and the feeding process at the same time, reducing the process of placing the workpiece once, improving the production efficiency and reducing the defective rate. In addition, a limiting strip is provided at the top of the shell, slots are provided at the bottom of the filler metal pre-installed on both sides of the plug body, and a welding strip is provided between the filler metal and the plug body. The melting point of the welding strip is lower than that of the filler metal, which can improve the accuracy of placing the plug body inside the shell and avoid the filler metal from separating from both sides of the plug body due to unstable pre-installation between the filler metal and the plug body during the melting of the filler metal during brazing, and improving the stability of the filler metal between the plug body and the shell to a certain extent. Description of the Drawings

[0016] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0017] Figure 1 is the overall structure schematic diagram of the present utility model;

[0018] Figure 2 is the overall exploded structure schematic diagram of the present utility model;

[0019] Figure 3 is of the present utility model Figure 2 structural schematic diagram of part A;

[0020] Figure 4 is the partial structure schematic diagram of the filler metal of the present utility model.

[0021] Legend Explanation:

[0022] 1. Base; 2. Shell; 3. Limiting strip; 4. Plug body; 5. Filler metal; 6. Welding strip; 7. Slot. Detailed Embodiment

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] As Figures 1 to 4 shown;

[0026] A brazing plug and filler metal integrated structure for a metal vacuum insulation panel, including a base 1.

[0027] In this implementation: To solve the existing problems in the prior art, as disclosed in the background art above, "in the existing brazing technology, when in use, a plug is first placed in the exhaust hole, and then the filler metal is placed. However, the vacuum brazing of the exhaust hole of the metal vacuum insulation panel is completed in a vacuum environment, and manual intervention is impossible. Placing the plug and the filler metal both require the use of a robot or a manipulator to complete. Two workpieces, the plug and the filler metal, need to be placed in sequence, making the design of the manipulator complex, occupying a large area, and having a high equipment cost. The two placements require accurate positions. Once misaligned, defective products will be produced, resulting in a high rejection rate." In combination, this problem is obviously an existing and difficult-to-solve problem. In view of this, to solve this technical problem, a limiting strip 3 and a welding strip 6 are added to this application document;

[0028] Furthermore:

[0029] As Figures 1 to 4 shown:

[0030] Combined with the above content: A brazing plug and filler metal integrated structure for a metal vacuum insulation panel, including a base 1. The left and right sides of the top of the base 1 are welded with a housing 2. The upper inner side of the housing 2 is inserted and welded and fixed by a limiting strip 3. The outer side above the limiting strip 3 is inserted into the inner side of the filler metal 5 and slides. A slot 7 is opened directly below the filler metal 5. The lower inner end surface of the filler metal 5 is welded with a welding strip 6. One end surface of the welding strip 6 away from the filler metal 5 is welded with a plug body 4. The middle top of the base 1 is in contact with the middle bottom of the plug body 4. The inner side of the housing 2 is in contact with the outer side below the plug body 4. The upper inner side of the housing 2 is in contact with the outer side of the filler metal 5.

[0031] In this embodiment: The filler metal 5 and the plug body 4 can be pre-assembled when producing the plug body 4. During operation, the plug body 4 with the filler metal is placed into the exhaust hole at one time. In this way, only one workpiece needs to be placed, simplifying the structure of the feeding manipulator and at the same time simplifying the feeding process.

[0032] In an alternative embodiment: There are two housings 2, and the two housings 2 are distributed on the left and right sides at the top of the housing 2. A reserved groove is provided at the top inner side of the housing 2, and the longitudinal section of the reserved groove at the top inner side of the housing 2 is in a quarter - circular shape.

[0033] In this embodiment: After the solder 5 melts in the reserved groove at the top inner side of the housing 2, it evenly flows on the inner side of the housing 2 through the reserved groove.

[0034] In an alternative embodiment: The number of the limiting strips 3 is the same as that of the housings 2, which is two. The length of the limiting strip 3 matches the front - to - back length of the housing 2, and the longitudinal section of the limiting strip 3 is rectangular.

[0035] In this embodiment: It can improve the accuracy when the plug body 4 is placed inside the housing 2, and avoid the situation that the solder 5 breaks away from the plug body 4 before melting.

[0036] In an alternative embodiment: Arc - shaped grooves are provided on both the left and right sides at the top of the plug body 4, and the grooves on both the left and right sides of the fixed plate of the plug body 4 communicate with the reserved grooves provided at the top inner side of the housing 2.

[0037] In this embodiment: After the solder 5 melts, it can flow along the combination of the groove and the reserved groove.

[0038] In an alternative embodiment: The length of the welding strip 6 matches the length of the solder 5, and the melting point of the welding strip 6 is lower than that of the solder 5. Grooves are provided on both the inner and outer end faces of the welding strip 6. The arc of the groove on the outer end face of the welding strip 6 matches the arc of the lower inner side of the solder 5, and the arc of the groove on the inner end face of the welding strip 6 matches the arc of the grooves on both the left and right sides at the top of the plug body 4.

[0039] In this embodiment: The melting point of the welding strip 6 is lower than that of the solder 5. Before melting the solder 5, the welding strip 6 will melt earlier than the solder 5, which is convenient for splicing and fixing the plug body 4 and the solder 5 during pre - installation.

[0040] In an alternative embodiment: The length of the slot 7 at the bottom of the solder 5 matches the length of the limiting strip 3 on the upper inner side of the housing 2, and the longitudinal section of the slot 7 matches the longitudinal section of the limiting strip 3.

[0041] In this embodiment: The limiting strip 3 is inserted into the slot 7 at the bottom of the solder 5, avoiding the solder 5 breaking away from both sides of the solder 5 due to unstable pre - installation between the solder 5 and the plug body 4 during welding and melting, and improving the stability of the solder 5 between the plug body 4 and the housing 2 to a certain extent.

[0042] Working principle and usage process of the utility model: When pre-installing, a slot 7 is opened at the bottom of the solder 5. The shape and length of the slot 7 are both matched with the cross-sectional shape and length of the limiting strip 3 welded on the top of the housing 2. After the opening is completed, two welding strips 6 are taken out. One end of the welding strip 6 is attached to the grooved areas on the left and right sides of the top of the plug body 4. A soldering gun capable of melting the welding strip 6 is used to weld the welding strip 6 to the plug body 4 for fixation. Subsequently, two solders 5 with slots 7 opened are taken out. The inner end surface of the solder 5 is attached to the outer end surface of the welding strip 6 and welded. The melting point of the welding strip 6 is lower than that of the solder 5. Therefore, when the soldering gun welds and melts the welding strip 6, the solder 5 will not melt prematurely. After pre-installation, the plug body 4 can be placed at a position where the robotic arm can grasp it. When starting brazing, the robotic arm grabs the plug body 4 and places it at the middle position on the top of the base 1. After placing it vertically, the slot 7 at the bottom of the solder 5 is sleeved outside the limiting strip 3 on the top of the housing 2. Subsequently, after the soldering gun is adjusted to a temperature capable of melting the solder 5, the solder 5 is melted. After cooling, the brazing of the base 1 and the plug body 4 is completed.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A brazing plug and brazing material integrated structure of a metal vacuum insulation panel, comprising a base (1), characterized in that: The base (1) is fixedly connected to a shell (2) on both left and right sides of the top, the shell (2) is fixedly connected to a limit strip (3) on the upper inner side, a solder (5) is slidably connected to the upper outer side of the limit strip (3), a slot (7) is provided directly below the solder (5), a welding strip (6) is fixedly connected to the lower inner end surface of the solder (5), and a plug body (4) is fixedly connected to the end surface of the welding strip (6) away from the solder (5).

2. The brazing plug and brazing material integrated structure of the metal vacuum insulation panel according to claim 1, characterized in that: The top middle of the base (1) contacts the middle bottom of the plug body (4), the inner side of the shell (2) contacts the outer side below the plug body (4), and the upper inner side of the shell (2) contacts the outer side of the solder (5).

3. The brazing plug and brazing material integrated structure of the metal vacuum insulation panel according to claim 1, characterized in that: The number of the shells (2) is two, and the shells (2) are distributed on the left and right sides of the top of the shell (2). A reserved groove is provided at the top inner side of the shell (2), and the longitudinal section of the reserved groove at the top inner side of the shell (2) is in the shape of a quarter circle.

4. The brazing plug and brazing material integrated structure of the metal vacuum insulation panel according to claim 1, characterized in that: The number of the limiting strips (3) is the same as the number of the shells (2), which is two. The length of the limiting strips (3) matches the front-to-back length of the shell (2). The longitudinal section of the limiting strips (3) is rectangular.

5. The brazing plug and brazing material integrated structure of the metal vacuum insulation panel according to claim 1, characterized in that: The top left and right sides of the plug body (4) are provided with arcuate grooves, and the grooves on the left and right sides of the fixed plate of the plug body (4) are interconnected with the reserved grooves provided at the top end of the inner side of the shell (2).

6. The brazing plug and brazing material integrated structure of the metal vacuum insulation panel according to claim 1, characterized in that: The length of the welding rod (6) matches the length of the solder (5), and the melting point of the welding rod (6) is lower than that of the solder (5). Both inner and outer end surfaces of the welding rod (6) are provided with grooves. The curvature of the groove on the outer end surface of the welding rod (6) matches the curvature of the inner side of the solder (5), and the curvature of the groove on the inner end surface of the welding rod (6) matches the curvature of the grooves on the left and right sides of the top of the plug body (4).

7. The brazing plug and brazing material integrated structure of the metal vacuum insulation panel according to claim 1, characterized in that: The length of the slot (7) at the bottom of the solder (5) matches the length of the limiting strip (3) on the upper inner side of the shell (2), and the longitudinal section shape of the slot (7) matches the longitudinal section shape of the limiting strip (3).

Images