Sintering furnace for producing copper-clad ceramic substrate

Abstract

The utility model belongs to the technical field of copper-clad ceramic production equipment, and particularly relates to a sintering furnace for copper-clad ceramic substrate production, which comprises a furnace body, a thermal insulation layer, an electric heating component and a furnace cover, the thermal insulation layer is arranged in the furnace body, the electric heating component is arranged in the thermal insulation layer, the furnace cover is of a cylindrical structure, and the furnace cover is arranged in the furnace body. The side, close to the interior of the furnace body, of the furnace cover is covered with a heat preservation layer, the furnace cover is connected with a rotating seat, the rotating seat is rotationally connected with the output end of the hydraulic machine, a partition plate is arranged on the rotating seat, a planetary gear set is arranged between the partition plate and the output end of the hydraulic machine, and an outer gear ring of the planetary gear set is connected with the partition plate. The other end of the sun gear is connected with the output end of the speed reducer; compared with the prior art, the furnace cover can be opened more conveniently, meanwhile, a circulating system is additionally arranged in the furnace body, the temperature of all positions in the furnace body is balanced, and the welding quality of copper-clad ceramic is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of copper-clad ceramic production equipment, in particular to a sintering furnace for producing copper-clad ceramic substrates. Background Art

[0002] Copper clad ceramic substrate is an electronic component substrate with a thin copper layer on the surface of the ceramic substrate. It usually consists of a ceramic substrate, a copper foil layer and a pad. Copper clad ceramic substrate has excellent thermal conductivity, high frequency characteristics and dimensional stability, so it plays an important role in the electronics industry. Its structural design and manufacturing process requirements are high, and precision processing and high-quality materials are required to ensure the performance and reliability of electronic components.

[0003] Copper-clad ceramic substrate is one of the key materials used to manufacture electronic components. The furnace used to produce copper-clad ceramic substrates is usually used to combine the ceramic powder and copper foil in the copper-clad ceramic substrate by high-temperature sintering to form a complete copper-clad ceramic substrate. This sintering furnace can usually provide a high temperature of more than 1000°C to ensure that the ceramic powder and copper foil can be fully sintered and combined. Due to the different thermal expansion coefficients of copper and ceramics, the uniformity of heating is extremely high in the heating project.

[0004] Most of the existing sintering furnaces use a manually-operated furnace cover, which is inconvenient and dangerous to operate. It is necessary to invent a reliable sintering furnace with an electrically-controlled furnace cover. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model develops a sintering furnace for producing copper-clad ceramic substrates. The furnace cover can be opened more conveniently, and a circulation system is added inside to balance the temperature at various locations in the furnace body, thereby improving the welding quality of the copper-clad ceramics.

[0006] The technical solution to the technical problem solved by the utility model is as follows: a sintering furnace for producing copper-clad ceramic substrates, comprising a furnace body, a thermal insulation layer, an electric heating component and a furnace cover, wherein the thermal insulation layer is installed inside the furnace body, and the thermal insulation layer is fully spread on the side wall and the bottom plate of the furnace body, and the electric heating component comprises an electric heating wire and an electric heating wire bracket, and the electric heating wire bracket is a cylindrical structure, which is installed inside the thermal insulation layer and tangent to the thermal insulation layer of the side wall of the furnace body, and the bottom is connected to the thermal insulation layer of the bottom plate of the furnace body, and the electric heating wire is wound on the electric heating wire bracket along a "Z" shape, and the furnace cover is a cylindrical structure. A heat-insulating layer is covered on one side close to the inside of the furnace body. The furnace cover is connected to the rotating seat through a connecting column. The rotating seat is rotatably connected to the output end of the hydraulic press. The hydraulic press is installed on a support. The support is installed on the ground through a flange. A partition is provided on the rotating seat. A planetary gear set is provided between the partition and the output end of the hydraulic press. The outer gear ring of the planetary gear set is connected to the partition. One end of the sun gear is rotatably connected to the output end of the hydraulic press, and the other end is connected to the output end of the reducer. The reducer is installed on the partition through a flange.

[0007] Preferably, the insulation layer on the furnace cover close to the inner side of the furnace body is a concave structure, and an axial flow fan is rotatably connected to the concave part, and the axial flow fan is connected to the output end of the power device.

[0008] Preferably, the power device is a rotating motor, the rotating motor is mounted on a motor bracket, the motor bracket is mounted on the furnace cover, and the axial flow fan is connected to the output end of the rotating motor through a transmission rod.

[0009] Preferably, a sealing ring is provided on the upper surface of the furnace body, the sealing ring is annular and the inner ring diameter is smaller than the furnace cover diameter.

[0010] Preferably, the upper surface of the furnace cover is connected with a reinforcing channel steel.

[0011] Preferably, reinforcement plates are arranged at intervals on the side walls of the furnace body.

[0012] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0013] 1. By connecting the furnace cover with the rotating seat and the hydraulic press and controlling it through a planetary gear set, the furnace cover can be opened and turned electronically, reducing manual operation and better ensuring the safety of operators;

[0014] 2. By setting up an axial flow fan, a vortex is formed inside the furnace body, making the heating more uniform and reducing the cracks caused by the difference in expansion between the copper and ceramic contact surfaces due to uneven heating;

[0015] 3. The strength of the furnace body and the furnace cover is improved by arranging reinforcing channel steel on the furnace cover and reinforcing plates on the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 for Figure 1 Sectional view in the AA direction;

[0018] Figure 3 for Figure 2 A partial enlarged view of the middle A area;

[0019] Figure 4 It is the overall structural diagram of the utility model;

[0020] Figure 5 It is a right view of the utility model;

[0021] Figure 6 for Figure 5 Sectional view in the AA direction;

[0022] Figure 7 This is a structural diagram of the heating wire bracket.

[0023] Among them: 1. furnace body; 101. sealing ring; 102. reinforcement plate; 2. insulation layer; 3. heating wire; 31. heating wire bracket; 4. furnace cover; 41. reinforcement channel steel; 5. axial flow fan; 51. transmission rod; 52. rotating motor; 521. motor bracket; 6. hydraulic press; 61. support; 7. rotating seat; 71. partition; 72. connecting column; 8. planetary gear set; 81. reducer. DETAILED DESCRIPTION

[0024] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0025] Example 1

[0026] See also Figures 1 to 7A sintering furnace for producing copper-clad ceramic substrates comprises a furnace body 1, a thermal insulation layer 2, an electric heating component and a furnace cover 4, wherein the thermal insulation layer 2 is installed inside the furnace body 1, and the thermal insulation layer 2 is fully spread on the side wall and the bottom plate of the furnace body 1, and the electric heating component comprises a heating wire 3 and a heating wire bracket 31, wherein the heating wire bracket 31 is a cylindrical structure, which is installed inside the thermal insulation layer 2 and is tangent to the thermal insulation layer 2 on the side wall of the furnace body 1, and the bottom is connected to the thermal insulation layer 2 on the bottom plate of the furnace body 1, and the heating wire 3 is wound on the heating wire bracket 31 along a "Z" shape, and the furnace cover 4 is a cylindrical structure, and the side close to the inside of the furnace body 1 is covered with Insulation layer 2, the furnace cover 4 is connected to the rotating seat 7 through a connecting column 72, the rotating seat 7 is rotatably connected to the output end of the hydraulic press 6, the hydraulic press 6 is installed on a support 61, and the support 61 is installed on the ground through a flange, a partition 71 is provided on the rotating seat 7, a planetary gear set 8 is provided between the partition 71 and the output end of the hydraulic press 6, the outer ring gear of the planetary gear set 8 is connected to the partition 71, one end of the sun gear is rotatably connected to the output end of the hydraulic press 6, and the other end is connected to the output end of the reducer 81, and the reducer 81 is installed on the partition 71 through a flange.

[0027] like Figure 2 As shown, the insulation layer 2 of the furnace cover 4 close to the inner side of the furnace body 1 is a concave structure, and an axial flow fan 5 is rotatably connected to the concave part. The axial flow fan 5 is connected to the output end of the power device, and the lower surface of the axial flow fan is flush with the lower surface of the furnace cover.

[0028] like Figure 2 As shown, the power device is a rotating motor 52, which is mounted on a motor bracket 521, and the motor bracket 521 is mounted on the furnace cover 4. The axial flow fan 5 is connected to the output end of the rotating motor 52 through a transmission rod 51, and the junction between the motor bracket 521 and the top of the furnace cover 4 is a sealing structure.

[0029] like Figure 3 As shown, a sealing ring 101 is provided on the upper surface of the furnace body 1. The sealing ring 101 is annular and the inner ring diameter is smaller than the diameter of the furnace cover 4. After the furnace cover 4 is closed, the hydraulic press continues to load downward until the sealing ring 101 is compressed, which can effectively prevent the heat loss inside the furnace body 1.

[0030] like Figure 6 As shown, the upper surface of the furnace cover 4 is connected with a reinforcing channel steel 41 , which can improve the overall strength of the furnace cover 4 .

[0031] like Figure 2 As shown, the side walls of the furnace body 1 are spaced apart with reinforcement plates 102 , which can improve the overall strength of the furnace body 1 .

[0032] Principle and operation process

[0033] The utility model realizes the electric control opening of the cover by optimizing the opening mode of the furnace cover 4. When in use, the hydraulic press 6 is first started, and the hydraulic press 6 pushes the rotating seat 7 to move upward, and the rotating seat 7 drives the furnace cover 4 to move upward to complete the opening operation. After opening, if it is necessary to hoist a heavier welding part, the reducer 81 is started, and the reducer 81 drives the sun gear of the planetary gear set 8 to rotate at the output end of the hydraulic press 6, and the sun gear drives the wheel frame to rotate, and the wheel frame drives the outer gear ring to rotate. Since the outer gear ring is connected to the rotating seat 7, the rotation of the sun gear will drive the rotating seat 7 as a whole and the furnace cover 4 to rotate, so that the opening of the furnace body 1 is completely exposed, and the arranged copper sheets and ceramic sheets can be placed on a special frame and hoisted into the furnace body 1 through lifting equipment such as a gantry crane; after the hoisting is completed, the reducer 81 is started to drive the rotating seat 7 to rotate so that it is facing the opening of the furnace body 1, and then the hydraulic press 6 is started to load downward, the furnace cover 4 is covered again and the sealing ring 101 is pressed, and the electric heating welding can be started; when the welding is completed and the furnace cover 4 needs to be opened, the above operation can be repeated.

[0034] During the heating process, the rotating motor 52 is started to drive the axial flow fan 5 to start working. At this time, eddy currents are formed in the center and around the furnace body 1, which can speed up the temperature conduction and make the temperature in each place in the furnace body 1 balanced.

[0035] Although the specific implementation methods of the utility model are described above in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A sintering furnace for producing a copper-clad ceramic substrate, comprising a furnace body (1), characterized in that: The furnace (1) further comprises a heat-insulating layer (2), an electric heating component and a furnace cover (4). The heat-insulating layer (2) is installed inside the furnace body (1). The heat-insulating layer (2) is fully spread on the side wall and the bottom plate of the furnace body (1). The electric heating component comprises a heating wire (3) and a heating wire bracket (31). The heating wire bracket (31) is a cylindrical structure, installed inside the heat-insulating layer (2) and tangent to the heat-insulating layer (2) on the side wall of the furnace body (1). The bottom is connected to the heat-insulating layer (2) on the bottom plate of the furnace body (1). The heating wire (3) is wound around the heating wire bracket (31) in a "Z" shape. The furnace cover (4) is a cylindrical structure. The side close to the inside of the furnace body (1) is covered with the heat-insulating layer (2). The furnace cover ( 4) connected to a rotating seat (7) through a connecting column (72), the rotating seat (7) being rotatably connected to an output end of a hydraulic press (6), the hydraulic press (6) being mounted on a support (61), the support (61) being mounted on the ground through a flange, a partition (71) being provided on the rotating seat (7), a planetary gear set (8) being provided between the partition (71) and the output end of the hydraulic press (6), an outer gear ring of the planetary gear set (8) being connected to the partition (71), one end of the sun gear being rotatably connected to the output end of the hydraulic press (6), and the other end being connected to the output end of a reducer (81), the reducer (81) being mounted on the partition (71) through a flange.

2. A sintering furnace for producing a copper-clad ceramic substrate according to claim 1, characterized in that: The heat-insulating layer (2) on the furnace cover (4) close to the inside of the furnace body (1) is a concave structure, and an axial flow fan (5) is rotatably connected to the concave part, and the axial flow fan (5) is connected to the output end of the power device.

3. A sintering furnace for producing a copper-clad ceramic substrate according to claim 2, characterized in that: The power device is a rotating motor (52), the rotating motor (52) is mounted on a motor bracket (521), the motor bracket (521) is mounted on the furnace cover (4), and the axial flow fan (5) is connected to the output end of the rotating motor (52) via a transmission rod (51).

4. A sintering furnace for producing a copper-clad ceramic substrate according to claim 1, characterized in that: A sealing ring (101) is provided on the upper surface of the furnace body (1); the sealing ring (101) is annular and has an inner ring diameter that is smaller than the diameter of the furnace cover (4).

5. The sintering furnace for producing a copper-clad ceramic substrate according to claim 1, characterized in that: A reinforcing channel steel (41) is connected to the upper surface of the furnace cover (4).

6. A sintering furnace for producing a copper-clad ceramic substrate according to claim 1, characterized in that: The side walls of the furnace body (1) are provided with reinforcement plates (102) at intervals.

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