Vacuum furnace for processing metal spectacle frame

Abstract

The utility model relates to the technical field of vacuum furnaces, in particular to a vacuum furnace for processing a metal spectacle frame, which comprises a vacuum furnace main body, the top end of the vacuum furnace main body is hermetically connected with a furnace cover and is rotatably connected with the vacuum furnace main body through a connecting component, and the top end of the furnace cover is rotatably connected with a connecting mechanism. And the connecting mechanism comprises a rotating wheel, the rotating wheel is rotationally connected to the top end of the furnace cover, and a sealing mechanism is arranged at the bottom end of the connecting mechanism, penetrates into the vacuum furnace main body and is in sliding connection with the bottom end of the furnace cover. According to the utility model, the sealing connection between the furnace cover and the vacuum furnace main body can be completed through the mutual matching of the internal parts of the connecting mechanism, and the sealing performance between the furnace cover and the vacuum furnace main body can be improved through the mutual matching of the internal parts of the sealing mechanism, and the heating operation of the metal glasses frame can be completed.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum furnaces, in particular to a vacuum furnace for processing metal eyeglass frames. Background Art

[0002] A vacuum furnace uses a vacuum system (composed of a vacuum pump, vacuum measuring device, vacuum valve and other components carefully assembled) to discharge some of the substances in the furnace cavity, making the pressure in the furnace cavity less than one standard atmospheric pressure. The space in the furnace cavity is thus in a vacuum state, and the heating system in the furnace generally uses a resistance filament (such as tungsten filament) for electrical heating.

[0003] The main materials of metal full-frame glasses include titanium alloy, nickel alloy and stainless steel. These metal materials have a certain hardness and a high melting point. They generally need to be heated in a vacuum furnace to facilitate staff to adjust the curvature of the metal glasses frame to ensure that the curvature of the frame is suitable for people to wear and has a certain degree of comfort.

[0004] However, when the existing vacuum furnace is in use, its top and the furnace cover are sealed only by a sealing ring. As a result, when the vacuum furnace is vacuuming out the materials in the furnace, the sealing between the furnace cover and the furnace body is poor, resulting in more resources required for heating the furnace, increasing the cost of using the vacuum furnace, and thus making it difficult to promote the use of vacuum furnaces in the metal full-frame glasses processing industry.

[0005] Therefore, it is necessary for us to propose a vacuum furnace for processing metal eyeglass frames to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a vacuum furnace for processing metal eyeglass frames, which can complete the sealed connection between the furnace cover and the vacuum furnace body through the mutual cooperation between the internal parts of the connecting mechanism. The mutual cooperation between the internal parts of the sealing mechanism can improve the sealing between the furnace cover and the vacuum furnace body, and complete the heating operation of the metal eyeglass frames, so as to solve the problem in the prior art that when the vacuum furnace is vacuum-discharging the material in the furnace, the sealing between the furnace cover and the furnace body is poor, resulting in more resources required for heating the furnace and increasing the cost of using the vacuum furnace.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a vacuum furnace for processing metal eyeglass frames, comprising a vacuum furnace main body, the top end of the vacuum furnace main body is sealedly connected to a furnace cover, and is rotatably connected to the vacuum furnace main body through a connecting assembly, the top end of the furnace cover is rotatably connected to a connecting mechanism, and passes through the furnace cover to the interior of the vacuum furnace main body, the bottom end of the connecting mechanism is provided with a sealing mechanism, which passes through the interior of the vacuum furnace main body and is slidably connected to the bottom end of the furnace cover.

[0008] Preferably, the connecting mechanism includes a rotating wheel, which is rotatably connected to the top of the furnace cover and passes through the interior of the furnace cover. The bottom end of the rotating wheel passes through the interior of the furnace cover and is connected and fixed with a threaded rod. The bottom end of the threaded rod is connected and fixed with a sealing plate, and is slidably connected to the bottom end of the furnace cover and is located at the top of the vacuum furnace body. The outer wall of the threaded rod is sleeved and fixed with a connecting plate, and is located above the sealing plate. The outer wall of the connecting plate is provided with a sealing ring, which is sleeved with the outer wall of the sealing plate and passes through the furnace cover to the interior of the vacuum furnace body.

[0009] Preferably, the sealing mechanism includes a heat conducting plate, which is installed inside the top of the vacuum furnace body, with hanging ears provided on both sides of the top of the heat conducting plate, and connecting pieces provided on both sides of the inner wall of the top of the vacuum furnace body. A resistance furnace wire is fixedly installed on the top of the vacuum furnace body and is located below the heat conducting plate and the connecting piece. The bottom end of the sealing plate is slidably connected to a sealing ring, which passes through the inner wall of the vacuum furnace body and is sealed with the inner wall of the vacuum furnace body. A connecting spring is provided at the connection between the sealing ring and the sealing plate.

[0010] Preferably, the inner wall of the furnace cover is provided with an internal thread matching the outer wall thread of the threaded rod, the bottom end of the furnace cover is provided with a telescopic groove matching the sealing plate and the connecting plate, the outer wall of the sealing ring is provided with an external thread, the top of the vacuum furnace body is provided with a docking groove matching the sealing ring, and the inner wall of the connecting groove is provided with an internal thread matching the external thread of the sealing ring.

[0011] Preferably, the inner wall of the connector is provided with a connecting groove matching the hanging ear, the surface of the heat conducting plate is provided with a plurality of heat conducting holes, and the main material is tungsten alloy.

[0012] Preferably, a movable groove matching the connecting spring is provided between the sealing ring and the sealing plate, the sealing ring and the sealing plate are sealed and connected, and a sealing groove matching the sealing ring is provided at the top of the vacuum furnace body.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. Place the metal eyeglass frame to be heated on the heat-conducting plate, connect the lugs on both sides of the heat-conducting plate to the connectors on the inner wall of the vacuum furnace body, and then hang the heat-conducting plate above the resistance furnace wire. After the furnace cover is sealed with the vacuum furnace body, start the vacuum system in the vacuum furnace body, evacuate the material in the furnace chamber to a vacuum, start the resistance furnace wire heating, and gradually increase the heat in the vacuum furnace body. The heat is then transferred to the metal eyeglass frame through the heat-conducting plate, and the heating operation of the metal eyeglass frame is completed. Then, open the furnace cover, and the staff can use a tool to hook the lugs and move them apart from the connectors, thereby driving the heat-conducting plate to be removed from the inside of the vacuum furnace body, making it convenient for the staff to adjust the curvature of the heated metal eyeglass frame.

[0015] 2. After the staff fit the furnace cover and the vacuum furnace body together, they rotate the wheel. The rotation of the wheel drives the threaded rod to rotate. The threaded rod rotates and slides inside the furnace cover through the thread, so that the threaded rod drives the sealing plate at the bottom end to move, so that the sealing plate moves and fits and contacts the top of the vacuum furnace body. At the same time, the rotation of the threaded rod drives the connecting plate sleeved on the outer wall to rotate. The rotation of the connecting plate drives the sealing ring to rotate. The sealing ring rotates through the thread to the inside of the vacuum furnace body, so that the sealing ring seals the fitting between the vacuum furnace body and the furnace cover. After the vacuum furnace chamber of the vacuum furnace body is evacuated, the air pressure at the connection between the sealing ring and the sealing plate is greater than the atmospheric pressure in the vacuum furnace chamber of the vacuum furnace body, so that the air pressure at the connection between the sealing ring and the sealing plate pushes the sealing ring to squeeze the connecting spring to contract and move, so that the sealing ring slides from the bottom end of the sealing plate to the inner wall of the vacuum furnace body. The sealing connection between the vacuum furnace body and the furnace cover by the sealing ring, the sealing plate and the sealing ring can improve the sealing between the vacuum furnace body and the furnace cover, and the vacuum performance in the furnace chamber is improved, thereby reducing the resources required for heating the vacuum furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

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

[0018] Figure 2 This is a schematic diagram of the inner wall structure of the vacuum furnace body of the present utility model;

[0019] Figure 3 This is an exploded schematic diagram of the connection structure between the vacuum furnace body and the heat conducting plate of the present invention;

[0020] Figure 4This is a cross-sectional schematic diagram of the connection structure between the furnace cover and the vacuum furnace body of the present invention;

[0021] Figure 5 For the utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0022] Description of reference numerals:

[0023] 1. Vacuum furnace body; 101. Furnace cover; 2. Connecting mechanism; 201. Rotor; 202. Threaded rod; 203. Sealing plate; 204. Connecting plate; 205. Sealing ring; 3. Sealing mechanism; 301. Heat conducting plate; 302. Hanging ear; 303. Connecting piece; 304. Resistance furnace wire; 305. Sealing ring; 306. Connecting spring. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] The utility model provides Figure 1-5 A vacuum furnace for processing metal eyeglass frames is shown, comprising a vacuum furnace main body 1, the top of the vacuum furnace main body 1 being sealedly connected to a furnace cover 101, and being rotatably connected to the vacuum furnace main body 1 through a connecting assembly, the top of the furnace cover 101 being rotatably connected to a connecting mechanism 2, and passing through the furnace cover 101 to the interior of the vacuum furnace main body 1, a sealing mechanism 3 being provided at the bottom end of the connecting mechanism 2, and passing through the interior of the vacuum furnace main body 1, and being slidably connected to the bottom end of the furnace cover 101, the sealed connection between the furnace cover 101 and the vacuum furnace main body 1 can be completed by mutual cooperation between the internal parts of the connecting mechanism 2, the sealing between the furnace cover 101 and the vacuum furnace main body 1 can be improved by mutual cooperation between the internal parts of the sealing mechanism 3, and the heating operation of the metal eyeglass frames can be completed.

[0026] Refer to the instruction manual Figure 1-5 The connecting mechanism 2 includes a runner 201, which is rotatably connected to the top of the furnace cover 101 and passes through the interior of the furnace cover 101. The bottom end of the runner 201 passes through the interior of the furnace cover 101 and is connected and fixed with a threaded rod 202. The bottom end of the threaded rod 202 is connected and fixed with a sealing plate 203, and is slidably connected to the bottom end of the furnace cover 101 and is located at the top of the vacuum furnace body 1. The outer wall of the threaded rod 202 is sleeved and fixed with a connecting plate 204, and is located above the sealing plate 203. The outer wall of the connecting plate 204 is provided with a sealing ring 205, which is sleeved with the outer wall of the sealing plate 203 and passes through the furnace cover 101 to the interior of the vacuum furnace body 1. The sealing connection between the furnace cover 101 and the vacuum furnace body 1 can be completed by the mutual cooperation between the internal parts of the connecting mechanism 2.

[0027] Refer to the instruction manual Figure 1-5 The sealing mechanism 3 includes a heat conducting plate 301, which is installed inside the top of the vacuum furnace body 1. Ears 302 are provided on both sides of the top of the heat conducting plate 301, and connecting pieces 303 are provided on both sides of the inner wall of the top of the vacuum furnace body 1. A resistance furnace wire 304 is fixed to the top of the vacuum furnace body 1 and is located below the heat conducting plate 301 and the connecting piece 303. The bottom end of the sealing plate 203 is slidably connected with a sealing ring 305, which penetrates to the inner wall of the vacuum furnace body 1 and is sealed with the inner wall of the vacuum furnace body 1. A connecting spring 306 is provided at the connection between the sealing ring 305 and the sealing plate 203. Through the mutual cooperation between the internal parts of the sealing mechanism 3, the sealing between the furnace cover 101 and the vacuum furnace body 1 can be improved, and the metal glasses frame is placed inside the vacuum furnace body 1 to complete the heating operation of the metal glasses frame.

[0028] Refer to the instruction manual Figure 1-5 The inner wall of the furnace cover 101 is provided with an internal thread that matches the outer wall thread of the threaded rod 202. The bottom end of the furnace cover 101 is provided with a telescopic groove that matches the sealing plate 203 and the connecting plate 204. The outer wall of the sealing ring 205 is provided with an external thread. The top of the vacuum furnace body 1 is provided with a docking groove that matches the sealing ring 205, and the inner wall of the connecting groove is provided with an internal thread that matches the external thread of the sealing ring 205. The top of the vacuum furnace body 1 is provided with a docking groove that matches the sealing ring 205, and the inner wall of the connecting groove is provided with an internal thread that matches the external thread of the sealing ring 205, so that the sealing ring 205 is threadedly fixed inside the vacuum furnace body 1.

[0029] Refer to the instruction manual Figure 1-5 The inner wall of the connecting piece 303 is provided with a connecting groove that matches the ear 302. The surface of the heat conducting plate 301 is provided with multiple heat conducting holes, and the main material is tungsten alloy. The surface of the heat conducting plate 301 is provided with multiple heat conducting holes, and the main material is tungsten alloy, which makes it easy for the heat conducting plate 301 to have good thermal conductivity and transfer heat energy to the metal glasses frame on the heat conducting plate 301.

[0030] Refer to the instruction manual Figure 1-5 A movable groove matching the connecting spring 306 is provided between the sealing ring 305 and the sealing plate 203, and the sealing ring 305 and the sealing plate 203 are sealed and connected. A sealing groove matching the sealing ring 305 is provided at the top of the vacuum furnace body 1. The sealing groove matching the sealing ring 305 is provided at the top of the vacuum furnace body 1, which facilitates the sealing ring 305 to slide from the inside of the sealing plate 203 to the inner wall of the vacuum furnace body 1, so that the sealing ring 305 and the sealing plate 203 cooperate with each other, thereby improving the sealing between the vacuum furnace body 1 and the furnace cover 101.

[0031] This utility works as follows:

[0032] Refer to the instruction manual Figure 1-5 , by placing the metal eyeglass frame to be heated on the heat conducting plate 301, and connecting the earrings 302 on both sides of the heat conducting plate 301 to the connecting piece 303 on the inner wall of the vacuum furnace body 1, it is convenient to hang the heat conducting plate 301 above the resistance furnace wire 304, and after being sealed with the vacuum furnace body 1 through the furnace cover 101, the vacuum system in the vacuum furnace body 1 is started, and the material in the furnace chamber is evacuated to a vacuum, and the resistance furnace wire 304 is started to heat, so that the heat in the vacuum furnace body 1 gradually rises and the heat is transferred to the metal eyeglass frame through the heat conducting plate 301, and the heating operation of the metal eyeglass frame can be completed. Then, the furnace cover 101 is opened, and it is convenient for the staff to hook the earrings 302 with a tool and move them apart from the connecting piece 303, thereby driving the heat conducting plate 301 to be taken out from the inside of the vacuum furnace body 1, so that the staff can adjust the curvature of the heated metal eyeglass frame.

[0033] Refer to the instruction manual Figure 1-5 After the staff fits the furnace cover 101 and the vacuum furnace body 1 together, they rotate the wheel 201. The rotation of the wheel 201 drives the threaded rod 202 to rotate. The threaded rod 202 rotates and slides inside the furnace cover 101 through the thread, so that the threaded rod 202 drives the sealing plate 203 at the bottom to move, so that the sealing plate 203 moves and fits into contact with the top of the vacuum furnace body 1. At the same time, the rotation of the threaded rod 202 drives the connecting plate 204 sleeved on the outer wall to rotate. The rotation of the connecting plate 204 drives the sealing ring 205 to rotate. The sealing ring 205 rotates and rotates into the interior of the vacuum furnace body 1 through the thread, so that the sealing ring 205 seals the fitting between the vacuum furnace body 1 and the furnace cover 101. After the furnace of the vacuum furnace main body 1 is evacuated to a vacuum, the air pressure at the connection between the sealing ring 305 and the sealing plate 203 is greater than the atmospheric pressure in the furnace of the vacuum furnace main body 1, so that the air pressure at the connection between the sealing ring 305 and the sealing plate 203 pushes the sealing ring 305 to squeeze the connecting spring 306 to contract and move, so that the sealing ring 305 slides from the bottom end of the sealing plate 203 to the inner wall of the vacuum furnace main body 1. Through the sealing connection between the sealing ring 305, the sealing plate 203, and the sealing ring 205 between the vacuum furnace main body 1 and the furnace cover 101, the sealing between the vacuum furnace main body 1 and the furnace cover 101 can be improved, the vacuum performance in the furnace can be improved, and the resources required for heating the vacuum furnace main body 1 can be reduced.

[0034] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A vacuum furnace for processing metal eyeglass frames, comprising a vacuum furnace body (1), characterized in that: The top end of the vacuum furnace body (1) is sealedly connected to a furnace cover (101) and is rotatably connected to the vacuum furnace body (1) through a connecting assembly. The top end of the furnace cover (101) is rotatably connected to a connecting mechanism (2) that passes through the furnace cover (101) to the interior of the vacuum furnace body (1). The bottom end of the connecting mechanism (2) is provided with a sealing mechanism (3) that passes through the interior of the vacuum furnace body (1) and is slidably connected to the bottom end of the furnace cover (101).

2. The vacuum furnace for processing metal eyeglass frames according to claim 1, characterized in that: The connecting mechanism (2) includes a rotating wheel (201), the rotating wheel (201) is rotatably connected to the top of the furnace cover (101) and penetrates into the interior of the furnace cover (101), the rotating wheel (201) penetrates into the interior of the furnace cover (101) and is connected and fixed with a threaded rod (202), the bottom end of the threaded rod (202) is connected and fixed with a sealing plate (203), and is slidably connected to the bottom end of the furnace cover (101) and is located at the top of the vacuum furnace body (1), the outer wall of the threaded rod (202) is sleeved and fixed with a connecting plate (204), and is located above the sealing plate (203), the outer wall of the connecting plate (204) is provided with a sealing ring (205), and is sleeved with the outer wall of the sealing plate (203), and penetrates the furnace cover (101) to the interior of the vacuum furnace body (1).

3. The vacuum furnace for processing metal eyeglass frames according to claim 2, characterized in that: The sealing mechanism (3) includes a heat conducting plate (301), which is installed inside the top of the vacuum furnace body (1), and has hanging ears (302) on both sides of the top of the heat conducting plate (301). Connectors (303) are provided on both sides of the inner wall of the top of the vacuum furnace body (1). A resistance furnace wire (304) is fixedly installed on the top of the vacuum furnace body (1) and is located below the heat conducting plate (301) and the connector (303). The bottom end of the sealing plate (203) is slidably connected to a sealing ring (305), which penetrates the inner wall of the vacuum furnace body (1) and is sealed with the inner wall of the vacuum furnace body (1). A connecting spring (306) is provided at the connection between the sealing ring (305) and the sealing plate (203).

4. The vacuum furnace for processing metal eyeglass frames according to claim 2, characterized in that: The inner wall of the furnace cover (101) is provided with an internal thread matching the outer wall thread of the threaded rod (202), the bottom end of the furnace cover (101) is provided with a telescopic groove matching the sealing plate (203) and the connecting plate (204), the outer wall of the sealing ring (205) is provided with an external thread, the top end of the vacuum furnace body (1) is provided with a docking groove matching the sealing ring (205), and the inner wall of the connecting groove is provided with an internal thread matching the external thread of the sealing ring (205).

5. The vacuum furnace for processing metal eyeglass frames according to claim 3, characterized in that: The inner wall of the connecting piece (303) is provided with a connecting groove matching the hanging ear (302), and the surface of the heat conducting plate (301) is provided with a plurality of heat conducting holes, and the main material is tungsten alloy.

6. The vacuum furnace for processing metal eyeglass frames according to claim 3, characterized in that: A movable groove matching the connecting spring (306) is provided between the sealing ring (305) and the sealing plate (203), the sealing ring (305) and the sealing plate (203) are sealed and connected, and a sealing groove matching the sealing ring (305) is provided at the top end of the vacuum furnace body (1).

Images