Vacuum heat treatment furnace for metal mold machining

Abstract

The utility model belongs to the technical field of heat treatment, particularly relates to a vacuum heat treatment furnace for processing a metal mold, and aims to solve the problems that the hardness and the strength of the metal mold do not reach the standard due to the fact that the metal mold is stacked in the furnace for heat treatment in the conventional equipment and each surface of the metal mold is heated unevenly. A plurality of electric heating elements are evenly installed on the inner circumferential side of the shell through screws, an isolation box is installed at the ends, close to each other, of the electric heating elements and located at the inner rear end of the shell through welding, a sealing door is installed at one end of the front face of the isolation box through a hinge, and a motor is installed at the top of the shell through bolts. The bottom end of the rotating shaft sequentially penetrates through the shell and the isolation box and is connected with a material rotating disc in an inserted mode through a connecting key. According to the utility model, the metal mold is arbitrarily hung on the hook, so that the metal mold rotates at a constant speed along with the material turntable, the behavior of uniform heating is achieved, and the problem that the hardness and the strength do not reach the standard is obviously avoided.

Description

Technical Field

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

[0002] Metal heat treatment is a process in which a metal or alloy workpiece is heated to a suitable temperature in a certain medium, kept at this temperature for a certain period of time, and then cooled at different speeds in different media to control its performance by changing the surface or internal microstructure of the metal material. The equipment that can complete this type of metal heat treatment is a vacuum heat treatment furnace.

[0003] After searching, a patent with publication number CN219195066U discloses a vacuum heat treatment furnace for metal mold processing, including a heat treatment furnace main body, the heat treatment furnace main body includes a heat treatment furnace body, a cover opening mechanism is arranged on the left side of the heat treatment furnace body, a feeding mechanism is arranged at the bottom of the heat treatment furnace cover, and the cover opening telescopic rod is fixedly connected to the heat treatment furnace cover through a furnace cover connecting seat. By controlling the motor, the cover opening telescopic rod is controlled to rotate, thereby driving the upper heat treatment furnace cover to rotate, so that the heat treatment furnace cover is opened, and then the cover opening telescopic rod is controlled to be raised and lowered by controlling the telescopic rod hinge seat, and the cover opening telescopic rod is adjusted to a suitable height, so that the feeding mechanism is installed at the bottom of the heat treatment furnace cover.

[0004] The existing equipment piles up metal molds in the furnace for heat treatment. The surfaces of the metal molds are heated unevenly, resulting in the problem that the hardness and strength of the metal molds do not meet the standards. Therefore, we propose a vacuum heat treatment furnace for metal mold processing to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the disadvantage of uneven heating and provides a vacuum heat treatment furnace for metal mold processing.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a vacuum heat treatment furnace for metal mold processing, comprising a shell, a plurality of electric heating elements are evenly installed on the inner circumference of the shell by screws, an isolation box is installed by welding at one end of the plurality of electric heating elements close to each other and located at the inner rear end of the shell, a sealing door is installed at the front end of the isolation box by a hinge, a motor is installed on the top of the shell by bolts, a rotating shaft is installed at the bottom end of the motor, the bottom end of the rotating shaft passes through the shell and the isolation box in turn, and a material turntable is plugged in by a connecting key, a plurality of plug-in tubes are evenly installed on the bottom end of the material turntable by bolts, tension springs are installed on the inner top ends of the plurality of plug-in tubes by screws, telescopic rods are installed on the bottom ends of the plurality of tension springs and located inside the corresponding plug-in tubes by screws, and hooks are installed on the bottom ends of the plurality of telescopic rods by bolts.

[0007] Preferably, an anti-dropping blocking piece is movably installed on the top of one side of several of the hooks through a torsion spring.

[0008] Preferably, an observation window is provided on the front side of the sealed door, and high temperature resistant glass is clamped inside the observation window.

[0009] Preferably, a sealing frame is welded to the rear end of the sealing door, and the outside of the sealing frame is gap-matched with the inside of the isolation box.

[0010] Preferably, a connecting air pipe is welded to the bottom end of the isolation box, and a solenoid valve is clamped inside the connecting air pipe.

[0011] Preferably, the bottom end of the connecting air pipe extends through the outer shell and is installed with an air pump by welding, an exhaust pipe is welded to one side of the air pump, and the top of the air pump is installed on the outer shell by bolts.

[0012] Preferably, support legs are welded to the four corners of the bottom end of the shell.

[0013] In the utility model, a vacuum heat treatment furnace for metal mold processing is described:

[0014] 1. The utility model can control the uniform rotation and heating of the metal mold inside the isolation box by hanging the metal mold on the hook arbitrarily and driving the material turntable to rotate at a uniform speed by the motor, thereby avoiding the problem of substandard hardness and strength due to large temperature difference in heating;

[0015] 2. The utility model cooperates with a plurality of plug-in tubes, tension springs and telescopic rods to avoid the problem that adjacent tension springs become entangled with each other when the material tray is started or stopped, resulting in the inability to smoothly implement uniform heating and inconvenient material removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a vacuum heat treatment furnace for metal mold processing proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the front cross-section of a vacuum heat treatment furnace for metal mold processing proposed by the utility model;

[0018] Figure 3 This is a schematic structural diagram of part A of a vacuum heat treatment furnace for metal mold processing proposed by the utility model;

[0019] Figure 4 This is a schematic structural diagram of the back portion of a sealed door of a vacuum heat treatment furnace for metal mold processing proposed by the utility model;

[0020] Figure 5 The utility model is a schematic structural diagram of the B part of a vacuum heat treatment furnace for metal mold processing.

[0021] In the figure: 1. Shell; 2. Electric heating element; 3. Isolation box; 4. Sealing door; 5. Motor; 6. Rotating shaft; 7. Material turntable; 8. Plug-in tube; 9. Tension spring; 10. Telescopic rod; 11. Hook; 12. Anti-slip baffle; 13. Observation window; 14. Sealing frame; 15. Connecting air pipe; 16. Solenoid valve; 17. Air pump; 18. Exhaust pipe; 19. Support leg. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-5 A vacuum heat treatment furnace for metal mold processing comprises a shell 1, a plurality of electric heating elements 2 are evenly installed on the inner circumference of the shell 1 by screws, an isolation box 3 is installed by welding at one end of the plurality of electric heating elements 2 close to each other and located at the inner rear end of the shell 1, a sealing door 4 is installed at one end of the front of the isolation box 3 by a hinge, a motor 5 is installed on the top of the shell 1 by bolts, a rotating shaft 6 is installed at the bottom end of the motor 5, the bottom end of the rotating shaft 6 passes through the shell 1 and the isolation box 3 in turn, and a material turntable 7 is plugged in by a connecting key, a plurality of plug-in tubes 8 are evenly installed on the bottom end of the material turntable 7 by bolts, tension springs 9 are installed on the top ends of the plurality of plug-in tubes 8 by screws, telescopic rods 10 are installed on the bottom ends of the plurality of tension springs 9 and located inside the corresponding plug-in tubes 8 by screws, and hooks 11 are installed on the bottom ends of the plurality of telescopic rods 10 by bolts.

[0024] In this embodiment, an anti-dropping blocking piece 12 is movably mounted on the top of one side of each of the plurality of hooks 11 via a torsion spring.

[0025] By adopting the above solution, an anti-slip baffle 12 is installed on the top of one side of several hooks 11 through a torsion spring, so that the anti-slip baffle 12 which can be controlled by the torsion spring can seal the gap on the corresponding hook 11, thereby avoiding the problem of the metal mold falling during the rotation process.

[0026] In this embodiment, an observation window 13 is provided on the front of the sealed door 4 , and high temperature resistant glass is clamped inside the observation window 13 .

[0027] By adopting the above solution, an observation window 13 is opened on the front of the sealed door 4, and high-temperature resistant glass is clamped inside the observation window 13, so that the heat treatment of the metal mold inside the isolation box 3 can be observed through the observation window 13 to avoid the problem of excessive heating.

[0028] In this embodiment, a sealing frame 14 is welded to the rear end of the sealing door 4 , and the exterior of the sealing frame 14 is gap-matched with the interior of the isolation box 3 .

[0029] By adopting the above scheme, a sealing frame 14 is welded to the rear end of the sealing door 4, and the outside of the sealing frame 14 is matched with the internal clearance of the isolation box 3, so that the tightness of the connection between the rear end of the sealing door 4 and the inside of the isolation box 3 can be increased through the sealing frame 14, thereby effectively blocking the air convection inside and outside, reducing heat loss, and improving heating efficiency.

[0030] In this embodiment, a connecting air pipe 15 is welded to the bottom end of the isolation box 3 , and a solenoid valve 16 is clamped inside the connecting air pipe 15 .

[0031] By adopting the above solution, a connecting air pipe 15 is welded to the bottom end of the isolation box 3, and a solenoid valve 16 is clamped inside the connecting air pipe 15, so as to realize long-distance air transportation and improve the ability to discharge excess gas inside the isolation box 3.

[0032] In this embodiment, the bottom end of the connecting air pipe 15 extends through the outer shell 1 and is installed with an air pump 17 by welding. An exhaust pipe 18 is welded to one side of the air pump 17, and the top of the air pump 17 is installed on the outer shell 1 by bolts.

[0033] By adopting the above scheme, the bottom end of the connecting air pipe 15 is extended through the outer shell 1, and the air pump machine 17 is installed by welding, so that the suction behavior is realized through the air pump machine 17. An exhaust pipe 18 is welded on one side of the air pump machine 17, and the top of the air pump machine 17 is installed on the outer shell 1 by bolts, so as to improve the fixing stability and avoid the problem of misalignment of the air pump machine 17.

[0034] In this embodiment, support legs 19 are welded at the four corners of the bottom end of the housing 1 .

[0035] By adopting the above solution, by welding support legs 19 at the four corners of the bottom end of the housing 1, balanced support is convenient, the placement stability is effectively improved, and the problem of tilting and tipping is avoided.

[0036] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A vacuum heat treatment furnace for metal mold processing, comprising a housing (1), characterized in that: A plurality of electric heating elements (2) are evenly mounted on the inner circumference of the shell (1) by screws, an isolation box (3) is mounted by welding at one end of the plurality of electric heating elements (2) close to each other and located at the inner rear end of the shell (1), a sealing door (4) is mounted on the front end of the isolation box (3) by hinges, a motor (5) is mounted on the top of the shell (1) by bolts, a rotating shaft (6) is mounted on the bottom end of the motor (5), the bottom end of the rotating shaft (6) passes through the shell (1) and the isolation box (3) in sequence, and is plugged with a material turntable (7) by a connecting key, a plurality of plug-in tubes (8) are evenly mounted on the bottom end of the material turntable (7) by bolts, tension springs (9) are mounted on the top ends of the plurality of plug-in tubes (8) by screws, telescopic rods (10) are mounted on the bottom ends of the plurality of tension springs (9) and located inside the corresponding plug-in tubes (8) by screws, and hooks (11) are mounted on the bottom ends of the plurality of telescopic rods (10) by bolts.

2. A vacuum heat treatment furnace for metal mold processing according to claim 1, characterized in that: An anti-drop blocking piece (12) is movably mounted on the top of one side of a plurality of the hooks (11) via a torsion spring.

3. A vacuum heat treatment furnace for metal mold processing according to claim 1, characterized in that: An observation window (13) is provided on the front of the sealed door (4), and high temperature resistant glass is clamped inside the observation window (13).

4. A vacuum heat treatment furnace for metal mold processing according to claim 1, characterized in that: A sealing frame (14) is welded to the rear end of the sealing door (4), and the exterior of the sealing frame (14) is clearance-matched with the interior of the isolation box (3).

5. The vacuum heat treatment furnace for metal mold processing according to claim 1, characterized in that: A connecting air pipe (15) is welded to the bottom end of the isolation box (3), and a solenoid valve (16) is clamped inside the connecting air pipe (15).

6. A vacuum heat treatment furnace for metal mold processing according to claim 5, characterized in that: The bottom end of the connecting air pipe (15) extends through the outer shell (1) and is installed with an air pump (17) by welding. An exhaust pipe (18) is welded to one side of the air pump (17). The top of the air pump (17) is installed on the outer shell (1) by bolts.

7. A vacuum heat treatment furnace for metal mold processing according to claim 1, characterized in that: Support legs (19) are welded to the four corners of the bottom end of the housing (1).

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